bluuebunny/crossref_metadata_2025 huggingface dataset:
Agricultura familiar, seu interesse acadêmico, sua lógica constitutiva e sua resiliência no Brasil
Authors: Baiardi Amilcar , Alencar Cristina Maria Macêdo de
Published: February 2015

O artigo pretende apresentar determinadas visões sobre a agricultura familiar no pensamento econômico e social, sugerindo que a temática vem despertando crescente interesse nas comunidades de pesquisadores destas áreas no Brasil, em diferentes momentos. A trajetória seguida procura destacar como diversos autores enfatizaram em suas análises a natureza, as especificidades e os fundamentos da agricultura familiar. O método de pesquisa é bibliográfico, com análises comparativas na economia e na sociologia, objetivando uma contextualizada reconstrução histórica de abordagens teóricas e empíricas sobre a agricultura familiar. Este procedimento metodológico suscitou a hipótese de ser a teoria de Chayanov seminal para inúmeros enfoques, com repercussões em diferentes escolas de pensamento interessadas na agricultura familiar. Ademais, permitiu conjecturar a respeito das especificidades da agricultura familiar, ao se constituir, organizar-se e sobreviver ao longo da história. O texto pretende trazer alguma contribuição para o debate atual sobre o papel e a importância da agricultura familiar no rural brasileiro, particularmente quanto à sua resiliência em um quadro de concentração da produção e de esvaziamento demográfico do campo. Sugere também que a qualificação dessa discussão depende de três fatores: 1) avanços na área conceitual, 2) mais pesquisas empíricas e 3) novos olhares sobre a diversidade setorial e regional no Brasil, devido aos condicionamentos das mesmas na definição das várias formas ou modalidades de agricultura familiar.
Três gerações de políticas públicas para a agricultura familiar e formas de interação entre sociedade e estado no Brasil
Authors: Grisa Catia , Schneider Sergio
Published: February 2015

Este artigo analisa a trajetória de construção de políticas públicas para a agricultura familiar no Brasil, procurando enfatizar as "gerações" ou referenciais de políticas públicas fortalecidos em alguns momentos-chaves, o modo como estes referenciais foram construídos e as relações entre Estado e sociedade civil. A análise aponta para a emergência, em períodos e contextos distintos, de três gerações ou referenciais de política pública para a agricultura familiar, sendo o primeiro pautado pelo fortalecimento do viés agrícola e agrário da categoria social; o segundo focado em políticas sociais e assistenciais e o terceiro, pela construção de mercados orientados pela segurança alimentar e pela sustentabilidade ambiental. Nesta análise também é destacado que as relações entre Estado e sociedade civil modificaram-se e complexificaram-se ao longo do tempo. De posturas críticas e reivindicativas, a sociedade civil passou a ser propositiva e, mais recentemente, também parceira na execução e cogestão das políticas públicas. Cabe destacar que as três gerações de políticas públicas e as diversas formas de relacionamento entre sociedade civil e Estado convivem atualmente nas arenas públicas.
Novas estratégias produtivas na Amazônia: estudo sobre os produtores agropecuários familiares no sudoeste paraense
Authors: Herrera José Antonio , Ramos Pedro , Silva João Ulisses Barata da
Published: February 2015

A Amazônia é integrada à economia nacional de modo que o capital se aproveita das assimetrias das trocas não leais e desiguais. A exploração dos recursos passa ser mais intensa, degradando o meio ambiente e agravando os problemas sociais. A imposição do capital nas relações estabelecidas, apesar de transformar a produção agropecuária familiar, não a eliminou, e essa apresenta distintas formas de produção e diferentes relações sociais. Partindo dessa premissa, buscou-se compreender as estratégias de produção que constituem a produção agropecuária familiar no Sudoeste Paraense. O estudo foi realizado em três municípios: Pacajá, área de Colonização Antiga; Anapu, área de PDS (Projeto de Desenvolvimento Sustentável); e Senador José Porfírio, a área de Projeto de Assentamento Convencional do Incra (Instituto Nacional de Colonização e Reforma Agrária). Foram acompanhadas cento e cinquenta (150) famílias durante o ciclo agropecuário 2007-2008. Como procedimentos metodológicos, foram utilizados parâmetros qualitativos (observação in loco) e quantitativos (análise estatística), podendo elucidar um mosaico (trajetórias, perspectivas e tendências) que compõem a unidade de diversidade da produção agropecuária familiar que resulta das distintas bases materiais que as famílias dispõem para estabelecerem seus projetos a médio e longo prazo.
Assessment of CPT-based methods for liquefaction evaluation in a liquefaction potential index framework
Authors: Maurer B.W. , Green R.A. , Cubrinovski M. , Bradley B.A.
Published: February 2015

In practice, several competing liquefaction evaluation procedures (LEPs) are used to compute factors of safety against soil liquefaction, often for use within a liquefaction potential index (LPI) framework to assess liquefaction hazard. At present, the influence of the selected LEP on the accuracy of LPI hazard assessment is unknown, and the need for LEP-specific calibrations of the LPI hazard scale has never been thoroughly investigated. Therefore, the aim of this study is to assess the efficacy of three CPT-based LEPs from the literature, operating within the LPI framework, for predicting the severity of liquefaction manifestation. Utilising more than 7000 liquefaction case studies from the 2010–2011 Canterbury (NZ) earthquake sequence, this study found that: (a) the relationship between liquefaction manifestation severity and computed LPI values is LEP-specific; (b) using a calibrated, LEP-specific hazard scale, the performance of the LPI models is essentially equivalent; and (c) the existing LPI framework has inherent limitations, resulting in inconsistent severity predictions against field observations for certain soil profiles, regardless of which LEP is used. It is unlikely that revisions of the LEPs will completely resolve these erroneous assessments. Rather, a revised index which more adequately accounts for the mechanics of liquefaction manifestation is needed.
Recycled aggregate concrete enhanced with polymer aluminium sulfate
Authors: Song Xuefeng , Qiao Pizhong , Wen Haifang
Published: February 2015

The large porosity, high water absorption and many inherent micro-cracks in recycled aggregates are the key causes of the weaker mechanical properties, higher drying shrinkage and even vulnerability to early-age cracking in recycled aggregate concrete (RAC). A method of using the polymer aluminium sulfate (PAS) to enhance the mechanical properties and volume stability of RAC is presented. Three basic mechanical properties (compressive strength, flexural strength and elastic modulus) and two volume stability parameters (free drying shrinkage and restrained shrinkage cracking) were evaluated along with a few parallel tests of PAS at the microstructural level. The microstructure of the interfacial transition zone (ITZ) in RAC was characterised by micro-hardness tests and scanning electron microscopy. The test results show that the PAS, due to its chemical function, is capable of effectively increasing the micro-hardness and reducing the inhomogeneity of the ITZ in RAC. These improvements in the microstructure of RAC with PAS contribute to improving the mechanical properties, reducing the drying shrinkage and retarding the restrained shrinkage cracking period of RAC.
Trends in the Timing and Clinical Context of Maintenance Dialysis Initiation
Authors: O’Hare Ann M. , Wong Susan P. , Yu Margaret K. , Wynar Bruce , Perkins Mark , Liu Chuan-Fen , Lemon Jaclyn M. , Hebert Paul L.
Published: February 2015

Whether secular trends in eGFR at dialysis initiation reflect changes in clinical presentation over time is unknown. We reviewed the medical records of a random sample of patients who initiated maintenance dialysis in the Department of Veterans Affairs (VA) in fiscal years 2000–2009 (n=1691) to characterize trends in clinical presentation in relation to eGFR at initiation. Between fiscal years 2000–2004 and 2005–2009, mean eGFR at initiation increased from 9.8±5.8 to 11.0±5.5 ml/min per 1.73 m2 (P<0.001), the percentage of patients with an eGFR of 10–15 ml/min per 1.73 m2 increased from 23.4% to 29.9% (P=0.002), and the percentage of patients with an eGFR>15 ml/min per 1.73 m2 increased from 12.1% to 16.3% (P=0.01). The proportion of patients who were acutely ill at the time of initiation and the proportion of patients for whom the decision to initiate dialysis was based only on level of kidney function did not change over time. Frequencies of documented clinical signs and/or symptoms were similar during both time periods. The adjusted odds of initiating dialysis at an eGFR of 10–15 or >15 ml/min per 1.73 m2 (versus <10 ml/min per 1.73 m2) during the later versus earlier time period were 1.43 (95% confidence interval [95% CI], 1.13 to 1.81) and 1.46 (95% CI, 1.09 to 1.97), respectively. In conclusion, trends in eGFR at dialysis initiation at VA medical centers do not seem to reflect changes in the clinical context in which dialysis is initiated.
Comments (January 2002)
Authors: Donnelly John
Published: February 2015

Editor's column - No abstract available.
Corporate culture: the key driver to value creation
Authors: Al-Husseini Sadad I.
Published: February 2015

Guest editorial - No abstract available.
Sorbed Polyacrylamides: Selective Permeability Parameters
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 75210, "Sorbed Polyacrylamides: Selective Permeability Parameters Using Surface Techniques," by M. Cordova, J.L. Mogoll¨®n, H. Molero, and M. Navas, PDVSA-Intevep, originally presented at the 2002 SPE/DOE Improved Oil Recovery Symposium, Tulsa, Oklahoma, 13-17 April.
Q&A with Charles R. Williamson
Authors: Williamson Charles R. , Donnelly John
Published: February 2015

Q&A - No abstract available.
Managing Risks During Organizational Changes
Authors: Heyerdahl Richard , Schumacher Robert , Daehli Ivar , Hide Asbjorn
Published: February 2015

HSE Horizons - This is a condensed version of paper SPE 73846, which was presented at the SPE International Conference on Health, Safety, and Environment in Oil and Gas E&P held in Kuala Lumpur, Malaysia, 20-22 March 2002.
Continuous Circulation Drilling
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper OTC 14269, "Continuous Circulation Drilling," by L.J. Ayling, SPE, and J.W. Jenner, SPE, Maris Intl. Ltd., and H. Elkins, SPE, Varco Drilling Equipment, originally presented at the 2002 Offshore Technology Conference, Houston, 6-9 May.
Joint Inversion of Pressure and DC Resistivity Measurements
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 77621, "Numerical Sensitivity Studies for the Joint Inversion of Pressure and DC Resistivity Measurements Acquired With In-Situ Permanent Sensors," by F.O. Alpak, SPE, C. Torres-Verdin, SPE, and K. Sepehrnoori, SPE, U. of Texas at Austin, and S. Fang, Baker Atlas, originally presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
The Need for a Strong Code of Ethics
Authors: Brown Larry
Published: February 2015

Guest editorial - No abstract available.
Red Zone Management: Rallying Point for Oil Industry Executives
Authors: Holland Dutch , Skarke Gary
Published: February 2015

Management - No abstract available.
Kinetic Rheology of Hydraulic Fracturing Fluids
Authors: Denney Dennis
Published: February 2015

This article is a synopsis of paper SPE 71660, "Kinetic Rheology of Hydraulic Fracturing Fluids," by Harold G. Walters, SPE, Ronnie G. Morgan, SPE, and Phillip C. Harris, SPE, Halliburton Energy Services Inc., originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, September 30-October 3.
Overview: Production Operations (March 2003)
Authors: Rogers John D.
Published: February 2015

Overview - No abstract available.
Q&A with Alberto Calderon Zuleta
Authors: Zuleta Alberto Calderon , Donnelly John
Published: February 2015

Q&A - No abstract available.
Overview: Offshore E&P (April 2002)
Authors: Tollefsen Svein
Published: February 2015

Overview - No abstract available.
Cook Project - Unlocking Potential
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 71795, "The Cook Project - Unlocking Potential," by Nigel Hill, Enterprise Oil, originally presented at the 2001 Offshore Europe Conference, Aberdeen, 4-7 September.
Tubing Collar Inserts for Producing Gas Wells Below the Critical Velocity
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 71554, "Design of Tubing Collar Inserts for Producing Gas Wells Below their Critical Velocity," by S.A. Putra, SPE, Pertamina, and R.L. Christiansen, SPE, Colorado School of Mines, originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
Big Models, Scalable Models? Please Make Up Your Mind
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 71596, "Trends in Reservoir Simulation: Big Models, Scalable Models? Will You Please Make Up Your Mind?" by Sheldon Gorell, SPE, and Robert Bassett, SPE, Landmark Graphics Corp., originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
Q&A with Mikhail Borisovich Khodorkovsky
Authors: Khodorkovsky Mikhail Borisovich , Donnelly John
Published: February 2015

Q&A - No abstract available.
Real Options Applied to Selecting Technological Alternative
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 77587, "Real Options Applied to Selection of Technological Alternative for Offshore Oilfield Development," by Francisco Dezen, SPE, and Celso K. Morooka, SPE, U. of Campinas, originally prepared for presentation at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Maximizing Reserves Growth and Profitability in Tight Gas Sands
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 75708, "Applied Reservoir Characterization for Maximizing Reserve Growth and Profitability in Tight Gas Sands: A Paradigm Shift in Development Strategies for Low-Permeability Gas Reservoirs," by P.D. McKinney, SPE, Anadarko Canada Corp., and J.A. Rushing, SPE, and L.A. Sanders, SPE, Anadarko Petroleum Corp., originally presented at the 2002 SPE Gas Technology Symposium, Calgary, 30 April-2 May.
Implicit Compositional Simulation of Miscible-Gas Injection
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 79692, "A New Formulation for the Implicit Compositional Simulation of Miscible-Gas Injection Processes," by Garf Bowen, SPE, and Paul Crumpton, SPE, Schlumberger, originally presented at the 2003 SPE Reservoir Simulation Symposium, Houston, 3-5 February.
Relevance (May 2002)
Authors: Holditch Stephen A.
Published: February 2015

President's column - No abstract available.
Overview: Well Intervention (May 2002)
Authors: Rike E.A.
Published: February 2015

Overview - No abstract available.
Realistic Approach to Pumping-Unit Optimization
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 72360, "A New and Realistic Approach to Pumping-Unit Optimization Through the Use of Intelligent Systems," by Nadim A. Hosn, SPE, Chevron USA Production Co.; Andrei S. Popa, SPE, West Virginia U.; and Carrie Goddard Popa, SPE, Chevron USA Production Co., originally presented at the 2001 SPE Eastern Regional Meeting, Canton, Ohio, 17-19 October.
Comments (May 2003)
Authors: Donnelly John
Published: February 2015

Editor's column - No abstract available.
Borehole Seismic Air-Gun Sources: What's the Safe Distance From a Ship's Hull?
Authors: Tulett J.R. , Duncan G.A. , Thompson P.R.
Published: February 2015

HSE Horizons - This is a condensed version of paper SPE 74177, which was presented at the SPE International Conference on Health, Safety, and Environment in Oil and Gas E&P held in Kuala Lumpur, Malaysia, 20-22 March 2002.
Pressure-Pressure Convolution Analysis Using Wireline Formation Tester Data
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 77343, "Pressure- Pressure Convolution Analysis of Multiprobe and Packer-Probe Wireline Formation Tester Data," by M. Onur, SPE, Istanbul Technical U., and P.S. Hegeman, SPE, and F.J. Kuchuk, SPE, Schlumberger, originally presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Unprecedented Perseverance
Authors: Halbouty Michel T.
Published: February 2015

Guest editorial - No abstract available.
Steamdrive Pilot Project Management in Northeast Brazil
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 79070, "An Example of a Steamdrive Pilot Project Management With 3D Seismic Survey in Northeast Brazil," by Delson Fernando da Silveira Cursino, Angre Luis Mynssen Ferreira, SPE, and Frederico Agular Ferreira Gomes, SPE, Petrobras, prepared for the 2002 SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, Calgary, 4-7 November.
Challenges for Offshore Heavy-Oil Field Development
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper OTC 15281, "Technical Challenges for Offshore Heavy-Oil Field Developments," by C.D. Wehunt, SPE, N.E. Burke, and S.G. Noonan, SPE, Chevron- Texaco E&P Technology Co., and T.R. Bard, ChevronTexaco Overseas Petroleum Inc., originally prepared for the 2003 Offshore Technology Conference, Houston, 5-8 May.
Downhole Deployment Valve for Underbalanced Drilling Successfully Tested
Authors: JPT staff _
Published: February 2015

Technology Update - Information provided by S. Herbel and R. Grant, Pinnacle Operating Co., and D. Hosie, B. Grayson, and B. Cuthbertson, Weatherford Intl.
Q&A with Einar Steensnaes
Authors: Steensnaes Einar , Donnelly John
Published: February 2015

Q&A - No abstract available.
Screenless Tip-Screenout Fracturing Triples Production in Kern River Field
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 71653, "Screenless Tip-Screenout Fracturing: A Detailed Examination of Recent Experience," by Y. Fan, SPE, M.D. Looney, SPE, and J.A. Jones, SPE, Texaco Inc., originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
Establishing A Lasting Legacy: A New Model for Sustainable Development
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 74058, "Establishing A Lasting Legacy: A New Model for Sustainable Development," by I.R. Taureka, D.T. Flemming, and S. Kini, Chevron Niugini Ltd., originally presented at the 2002 SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production, Kuala Lumpur, 20-22 March.
Safety Performance of the E&P Industry - Year 2000
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 74091, "Safety Performance of the E&P Industry - Year 2000," by D. Smith, SPE, Intl. Assn. of Oil and Gas Producers, originally presented at the 2002 SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production, Kuala Lumpur, 20-22 March.
Aggressive Growth in Tough Markets
Authors: Anand Pradeep
Published: February 2015

Guest editorial - No abstract available.
Techbits (July 2003)
Authors: JPT staff _
Published: February 2015

Techbits - No abstract available.
Evaluation of Contractor HSE Performance - The Industry at a Crossroad
Authors: Knode Tom , Cook Pat
Published: February 2015

Management - No abstract available.
Technological Advances Highlight OTC
Authors: Denney Dennis , Wallace Rhea
Published: February 2015

Conference review - No abstract available.
Overview: Well Stimulation (July 2003)
Authors: Cipolla Craig L.
Published: February 2015

Overview - No abstract available.
Overview: Multilateral/Extended Reach (July 2003)
Authors: Wolfson Larry
Published: February 2015

Overview - No abstract available.
Relevance (August 2002)
Authors: Holditch Stephen A.
Published: February 2015

President's column - No abstract available.
Comments (August 2002)
Authors: Donnelly John
Published: February 2015

Editor's column - No abstract available.
4D Seismic Monitoring of Water Influx at Bay Marchand
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 71329, "4D Seismic Monitoring of Water Influx at Bay Marchand: The Practical Use of 4D in an Imperfect World," by Ronald Behrens, SPE, and Patrick Condon, SPE, Chevron Petroleum Technology Co.; William Haworth and Mark Bergeron, SPE, Chevron North America E&P; and Zhijing Wang, SPE, and Christine Ecker, Chevron Petroleum Technology Co., originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
High-Resolution Surface Gravity Survey to Monitor Gas Cap Water Injection
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 76740, "Performing a High-Resolution Surface Gravity Survey to Monitor the Gas Cap Water Injection Project, Prudhoe Bay, Alaska," by Jerry L. Brady, SPE, BP plc; John F. Ferguson and Carlos V.L. Aiken, U. of Texas Dallas; John E. Seibert, Seibert & Assoc.; Tianyou Chen, U. of Texas Dallas; and Jennifer L. Hare, Zonge Engineering , originally presented at the 2002 SPE Western Regional/AAPG Pacific Section Joint Meeting, Anchorage, 20-22 May.
Cement Design for the Life of the Well
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 75700, "Safe and Economic Gas Wells Through Cement Design for Life of the Well," by K. Ravi, SPE, Halliburton; M. Bosma, SPE, Shell Intl. E&P; and O. Gastebled, TNO Building and Construction Research, originally presented at the 2002 SPE Gas Technology Symposium, Calgary, 30 April-2 May.
Techbits (August 2003)
Authors: JPT staff _
Published: February 2015

Techbits - No abstract available.
Development of HP/HT Fiber-Optic Connectors for Subsea Intelligent Wells
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper OTC 15323, "The Development and Application of HT/HP Fiber-Optic Connectors For Use on Subsea Intelligent Wells," by Perry Wright, Stewart Barlow, and Anton Brees, Ocean Design Inc., prepared for the 2003 Offshore Technology Conference, Houston, 5-8 May.
Sustainable Development in the Oil and Gas Industry (August 2003)
Authors: Arscott Lyn
Published: February 2015

HSE Horizons - This is an edited version of paper SPE 83062, which was prepared for presentation at the SPE/EPA/DOE Exploration and Production Environmental Conference held in San Antonio, Texas, 10-12 March 2003.
Interview with 2003 SPE President Andrew A. Young
Authors: Young Andrew A.
Published: February 2015

President's interview - No abstract available.
The Revenue Dimension of Oil, Gas, and Mining Projects: Issues and Practices
Authors: McPhail Kathryn
Published: February 2015

HSE Horizons - This is a condensed version of paper SPE 74021, which was presented at the SPE International Conference on Health, Safety, and Environment in Oil and Gas E&P held in Kuala Lumpur, Malaysia, 20-22 March 2002.
Near-Wellbore Modeling To Assist Operation of an Intelligent Multilateral Well
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 71828, "Near-Wellbore Modeling To Assist Operation of an Intelligent Multilateral Well in the Sherwood Formation," by C. Lucas, SPE, Schlumberger; P. Duffy and E. Randall, SPE, BPAmoco; and Y. Jalali, SPE, Schlumberger, originally presented at the 2001 Offshore Europe Conference, Aberdeen, 4-7 September.
Pipeline-Quality Natural Gas After Molecular-Gate CO2 Removal
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 80602, "Production of Pipeline-Quality Natural Gas with the Molecular Gate CO2-Removal Process," by James Wills, SPE, and Mark Shemaria, SPE, Tidelands Oil Production Co., and Michael J. Mitariten, Engelhard Corp., prepared for the 2003 SPE/EPA/DOE Exploration and Production Environmental Conference, San Antonio, Texas, 10-12 March.
Improved Placement Technique for Through-Tubing Gravel Packing
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 77685, "An Improved Placement Technique for Resin-Coated Gravel in Through Tubing Gravel Packing," by Erik Berg, SPE, BJ Services; Ola Haugum, Norsk Hydro; Trond Reinertsen, BP; and Kristian Harestad, SPE, originally presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Advanced Completions for Injection Applications
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 74392, "Advanced Completions for injection Applications," by Allyson Gajraj, SPE, Schlumberger; Chuanping He, SPE, Stanford U.; and Soraya Betancourt, SPE, Ruijian Li, SPE, and Younes Jalali, SPE, Schlumberger, oiginally presented at the 2002 SPE International Petroleum Conference and Exhibition in Mexico, Villahermosa, Mexico, 10-12 February.
Waterflood Surveillance: Behind Casing Resistivity Measurement at Elk Hills
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 76730, "Next Generation Waterflood Surveillance: Behind Casing Resistivity Measurement Successfully Applied in the 'A3-A6' Waterflood at Elk Hills Field, Kern County, California," by Mark Starcher, SPE, Dave Mut, SPE, and Mike Fontanarosa, Occidental of Elk Hills, Inc., and Bob Davis, SPE, and Chris Presmyk, SPE, Schlumberger, originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
Mitigating Wellbore Stability Problems of Water-Based Muds
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper OTC 14267, "Mitigating Wellbore Stability Problems While Drilling With Water-Based Muds in Deepwater Environments," by U.A. Tare, SPE, Halliburton; F.K. Moody, SPE, Shell Intl. E&P Inc.; and C.P. Tan, SPE, CSIRO Petroleum, originally presented at the 2002 Offshore Technology Conference, Houston, 6-9 May.
The SPE Public Energy Education Committee
Authors: Holditch Stephen A.
Published: February 2015

Guest editorial - No abstract available.
Water-Production Management: An Application of Expandable Technology
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 81489, "Water-Production Management-PDO's Successful Application of Expandable Technology," by J.C.M. Braas, SPE, C.O. Aihevba, SPE, and M. Shandoodi, Petroleum Development Oman, and R.H. Van Noort and M.N. Baaijens, Shell Intl. E&P, prepared for the 2003 SPE Middle East Oil Show, Bahrain, 9-12 June.
Overview: Well Stability and Sand Control (October 2003)
Authors: Kwakwa Kwabena
Published: February 2015

Overview - No abstract available.
One SPE (November 2002)
Authors: Young Andrew A.
Published: February 2015

President's column - No abstract available.
Offshore Europe Conference Tackles Mature Basin Development Issues
Authors: Donnelly John
Published: February 2015

Conference review - No abstract available.
Reservoir Modeling for Horizontal Exploitation of a Giant Heavy-Oil Field
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 78957, "Reservoir Modeling for Horizontal Exploitation of a Giant Heavy-Oil Field: Challenges and Lessons Learned," by T.H. Tankersley, SPE, and M.W. Waite, SPE, Petrolera Ameriven, prepared for the 2002 SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, Calgary, 4-7 November.
Successful Horizontal Producers in Midway-Sunset Thermal Operations
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 83479, "Successful Horizontal Producers in Midway- Sunset Thermal Operations," by Charles McKay, SPE, Jeff Jones, SPE, and Joel Pomerene, Berry Petroleum, prepared for the 2003 SPE Western Regional/ AAPG Pacific Section Joint Meeting, Long Beach, California, 19-24 May.
Overview: Production/Facilities (December 2002)
Authors: Maitland Geoffrey
Published: February 2015

Overview - No abstract available.
Special Requirements of the Flow System and Equipment for Viscoelastic Polymer Fluids
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 77496, "Rheology and Special Requirements on the Flow System and Equipment for Large-Scale Injection, Production, and Gathering of Viscous-Elastic Polymer Fluids in Chemical Floods and Methods to Solve the Problems That Emerge," by Wang Demin, SPE, Jiang Youlin, Wang Yan, SPE, Gong Xiaohong, and SPE, Wang Gang, SPE, Daqing Oil Co. Ltd., originally presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Prudhoe Bay Field Production Optimization System
Authors: Bybee Karen
Published: February 2015

This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 77643, "Prudhoe Bay E-Field Production Optimization System Based on Integrated Reservoir and Facility Simulation," by M.L. Litvak, SPE, L.A. Hutchins, SPE, and R.C. Skinner, SPE, BP; B.L. Darlow, SPE, Landmark Graphics Corp.; R.C. Woods, Software North; and L.J. Kuest, GSI, originally presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October.
Comments (December 2003)
Authors: Donnelly John
Published: February 2015

Editor's column - No abstract available.
"Self-Lifting" Method to Eliminate Severe Slugging in Offshore Production Systems
Authors: Denney Dennis
Published: February 2015

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 84227, "A Design Approach for 'Self-Lifting' Method to Eliminate Severe Slugging in Offshore Production Systems," by J.O. Tengesdal, SPE, Pennsylvania State U. (now with Statoil ASA) and Leslie Thompson, SPE, and Cem Sarica, SPE, U. of Tulsa, prepared for the 2003 SPE Annual Technical Conference and Exhibition, Denver, 5-8 October.
Research on Influence of Fatigue Metal Damage of the Inner Race of Bearing on Vibration in Different Frequencies/ Badania Wpływu Uszkodzeń Na Skutek Zmeczenia Materiału Bieżni Wewnętrznej Łożyska Na Drgania W Różnych Częstotliwościach
Authors: Burdzik R. , Wegrzyn T. , Konieczny Ł. , Lisiecki A.
Published: February 2015

The paper presents results of research on influence of fatigue metal damage of the inner race of bearing on vibration in different frequencies. The active diagnostics experiments were conducted on application of vibroacoustics methods for technical condition monitoring. Provides an overview of materials and process analysis of rolling bearings wear. The bearing damage of the inner race have been simulating. The research was conducted on special research-educational test bench for vibration monitoring for rotaring machinery. For the identification of the symptoms of the defects in the vibration signal the analysis of time realization and frequency transformation of the vibration have been conducted. For the comparison of the vibration of good and damage bearings signals registered for different frequencies have been presented in form of spectrograms and RMS distributions.
Morphology and Hardness of Electrochemically-Codeposited Ti-Dispersed Ni-Matrix Composite Coatings/ Morfologia I Twardość Elektrochemicznie Współosadzonych Powłok Kompozytowych Ni-Ti
Authors: Srikomol S. , Janetaisong P. , Boonyongmaneerat Y. , Techapiesancharoenkij R.
Published: February 2015

The effects of current density and Ti particle loading in a plating bath on the morphology and hardness of Ni-Ti composite coatings via an electrochemical-codeposition process were investigated. The Ti-reinforced Ni-matrix composite coatings were codeposited on copper substrates using a Ni-ion electrolytic solution stably suspended with -45 micron Ti particles. Within the current studied range, the coatings’ Ti contents are in the range between 46 and 62 at.%. The morphology appeared to vary with current density. Structures of the Ni-Ti composite coatings produced under low current density conditions revealed denser structures, which is in contrast to the more porous structures noted in the coatings produced under high current density. An initial increase of current density from 100 to 150 mA/cm2 also tends to raise Ti coating content. The reinforcement of Ti particles in the coatings also increased their hardness, which is attributed to the possible role of the embedded Ti particles in hindering matrix deformation. The effect of Ti loading on the coating’s Ti contents was not significant under conditions used in the present study
Characteristics of Alsi9mg/2017A Aluminum Alloys Friction Stir Welded with Offset Welding Line and Root-Side Heating/ Charakterystyka Stopów Aluminium Alsi9mg/2017A Zgrzewanych Metodą Friction Stir Welding Z Przesunięcem Linii Zgrzewania I Dodatkowym Źródłem Ciepła Od Strony Grani
Authors: Mroczka K.
Published: February 2015

Welding of materials differing significantly in terms of chemical composition and microstructure is one of the main advantages of the Friction Stir Welding method. This paper presents the results of welding of a cast AlSi9Mg (hypoeutectic silumin) and 2017A aluminum alloys. The welding was performed with a high linear velocity (over 1 m/min). The modification of the process consisted in offsetting the welding line toward the advancing side, and in on application of an additional heat source from the root side. The study of the macrostructure (with high resolution of the image) revealed the presence of defects in the weld, despite greater plasticity of the material results from raising the temperature. The analysis (by SEM, SEM-EDS) of constituent stable phases within the cast alloy, showed their considerable fragmentation, however to a various degree. The material above the weld nugget was not mixed and contained micro-defects that did not result from the welding. The hardness distribution within the weld nugget, reveals slight strengthening of the both cast and wrought alloys. A metastable state of the 2017A alloy was also documented, however, the alloy hardness increased within the weld nugget due to the natural aging. On the other hand, the hardness of the heat-affected zone in this alloy does not increase also due to the natural aging.
Characteristics of Plasticity of Hot Deformed Cu-Ti Alloys/ Charakterystyki Plastyczności Odkształcanych Na Gorąco Stopów Cu-Ti
Authors: Szkliniarz A. , Blacha L. , Szkliniarz W. , Łabaj J.
Published: February 2015

In the paper, results of a study on the effects of deformation conditions (temperature, strain and strain rate) on flow curves, maximum flow stress and corresponding deformation of Cu-Ti alloys with various Ti contents, subjected to hot deformation, are presented. Evaluation of formability of alloys was performed with the use of a Gleeble HDS-V40 thermal-mechanical simulator during uniaxial hot compression at 700 to 900°C, strain rate of 0.1 to 10.0 s-1 and strain of 0 to 1.2 (70%). It was found that within the analysed ranges of temperature, strain rate and strain, Cu-Ti alloys underwent uniform deformation without cracking. The largest deformation resistances were observed for the alloys with the highest Ti contents; their decrease was possible with the temperature raise and the strain rate reduction.
Three-Dimensional Investigations of Finely Grained Materials/ Trójwymiarowa Analiza Materiałów Drobnokrystalicznych
Authors: Bobrowski P. , Faryna M. , Bigos A. , Homa M. , Sypien A. , Bieda M.
Published: February 2015

Development of new materials requires application of sophisticated techniques to characterize microstructure in a very detailed way. The combination of Electron Backscatter Diffraction (EBSD) and Energy Dispersive Spectrometry (EDS) with Focused Ion Beam (FIB) are excellent examples of such techniques. They are based on serial sectioning of chosen region in the investigated sample followed by data acquisition using the dual-beam scanning electron microscope equipped with both electron and ion columns. Three kinds of samples have been investigated: a) are anticorrosive Ni-Mo coating on ferritic steel; b) the oxidized Crofer22 APU ferritic stainless steel; c) the Al 6013 aluminum alloy after complex plastic deformation. The obtained results allowed to analyze crystalline morphology, distribution of precipitates as well as to reconstruct internal structure of grains and grains boundaries geometry.
Reconfiguration of Point Defects in FCC and HCP Metals at Initial Stage of Recovery Process/ Rekonfiguracja Struktury Defektów Sieciowych W Początkowym Stadium Zdrowienia Metali O Sieci Rsc I Hz
Authors: Boczkal G. , Perek-Nowak M.
Published: February 2015

The conducted studies regarded the analysis of change of structure of point defects occurring during initial stage of recovery of FCC (Al, Cu) and HCP (Ti, Mg and Zn) metals at temperature close to Th =0.5Tm. The changes in resistivity of the deformed and later recovered samples were measured. The recovery time was 1, 2, 3, 4 or 5 min. The observed changes were correlated with reorganization of arrangement of lattice defects during annealing.
The Energy Consumption Aspects in the Vacuum Assisted Moulding Process/ Aspekty Energochłonności W Procesie Formowania Podciśnieniowego
Authors: Smyksy K. , Brzezinski M.
Published: February 2015

In the current manufacturing of foundry sand moulds, various methods of moulding sand compaction are used. Researchers are still looking for the optimal methods of mould manufacturing not only in terms of achieving the best technological effects, but also in terms of energy consumption. The article presents selected results of research of their own variant of the synthetic moulding sand compaction process using a vacuum. The measurements were also designed for evaluation the energy consumption in this method. The results were compared with other air flow moulding methods which are widely used. The study was performed on the original design test stand, which allows the visualization of the compaction process
The Use of Colloidal Solutions of Zinc Oxide Nanoparticles in Investment Casting Technology/ Wykorzystanie Koloidalnych Roztworów Nanoczastek Tlenku Cynku W Technologii Wytapianych Modeli
Authors: Nowicki P. , Tokarski T. , Hutera B. , Stypuła B.
Published: February 2015

Studies presented here are relevant to the investment casting technology.

The wettability of wax by the colloidal solutions of ZnO nanoparticles was tested in the following environments: esters, heptyl acetate (OH), butyl acetate (OB) and in alcohols: methanol (M), ethanol (E) and propanol (P). All colloidal solutions of ZnO showed very high effectiveness in wetting of the unmodified wax surface.

Next, onto the surface modified with colloidal solutions of ZnO, a liquid ceramic slurry was applied (CMC). The wettability of the modified wax surface by the ceramic slurry is strongly dependent on the structure of organic solvents (the number of the functional groups of -OH, -COOH and the length of carbon chains). As regards the modifier (ZnO), the best wax wettability by CMC was achieved applying previously onto the surface of the wax a colloidal solution of ZnO nanoparticles in butyl acetate (OB). The contact angle amounted to about 38 deg.

Studies using scanning electron microscopy (SEM) and X-ray microanalysis (XRD) allowed an assessment of the effect of colloidal solutions of ZnO nanoparticles on the wax - CMC interface morphology.
Adhesion Properties of Systems on a Composite Coatings Basis – The Steel Substrate/ Adhezja Powłok Kompozytowych Na Podłożu Stalowym
Authors: Jankura D. , Draganovská D.
Published: February 2015

The paper deals with the assessment of systems properties on the heating coat basis - the steel substrate in terms of the adhesion and coatings structure. On S235JRG1 steel substrate the ceramic and composite coatings on the Al2O3 basis were made for research purpose by the technology of plasma heating spraying with a water stabilized arc. The content effect of Ni metallic component to the base Al2O3 powder was examined on the adhesion and composite coatings structure. Adhesion tests were examined in terms of STN EN 582 (Thermal spraying. Determination of tensile adhesive strength). Coatings were further evaluated by a hardness measurement, chemical and microscopic analysis. Adhesion tests proved the Ni metallic powder addition markedly increases the adhesion of composite heating sprayed coatings and allows their creation without an interlayer utilization. The composite coating contains fewer defects in term of pores and cavities occurrence and rifts in the first place which are caused by dilatation strains during a setting process.
Influence of a Substrate Surface on the (Zn) – Coating Formation/ Wpływ Powierzchni Podłoża Na Kształtowanie Się Powłoki (Zn)
Authors: Wegrzynkiewicz S. , Jedrzejczyk D. , Szłapa I. , Hajduga M. , Boczkal S.
Published: February 2015

The steel substrate was cut by means of different methods, like water jet, laser or oxyacetylene blowpipe. So, some different surfaces (after cutting / without cutting) were subjected to the (Zn) - hot dip galvanizing. The galvanizing process was performed in industrial conditions by applying the constant temperature equal to 457°C, and a dipping time equal to 150 s. The (Zn) - coating morphologies and sub-layer thicknesses were analyzed to explain some expected differences in the coatings formation
Model Approach of Carbon Deposition Phenomenon in Mixed H2O/Co2 Methane Reforming Process/ Modelowanie Zjawiska Wytrącania Węgla W Procesie Reformingu Metanu Fazą Gazową H2O/Co2
Authors: Kaczmarczyk R. , Gurgul S.
Published: February 2015

This paper presents thermodynamic conditions for carbon deposition in methane reforming process by gas phase H2O/CO2. Ranges of substrate concentrations and temperatures for creating carbon deposition were specified in an analytical form. In the description of the conversion of methane CH4-(H2O/CO2) parametric equations were used, which allowed to define equilibrium composition of the process. The article formulates the basic assumptions of parametric equations models and their use to describe the course of the homogeneous reactions. The results may provide a model basis for the description of properties of the mixed reforming process CH4 - (H2O/CO2).
Modeling of TiN and Ti2O3 Precipitates Formation During Solidification of Steel/ Modelowanie Powstawania Wydzieleń TiN I Ti2O3 W Procesie Krzepnięcia Stali
Authors: Kalisz D. , Zak P.L.
Published: February 2015

The formation of titanium nitride precipitations during solidification of steel was modeled with own computer software based on Ueshima model. A thermodynamic parameters database was worked out on the basis of literature study. Calculations were performed for two types of steel; one of them was high in titanium. The quantity of produced titanium nitrogen inclusions was calculated. The authors analyzed changes in nitrogen, titanium and oxygen content in the course of segregation of steel components on the solidification front. The influence of solidification rate on the process of precipitation formation was analyzed.
Part II. Model for the Protective Coating Formation During Hot Dip Galvanizing/ Część II. Model Formowania Powłoki Ochronnej Podczas Cynkowania Ogniowego
Authors: Wołczynski W. , Pogoda Z. , Garzeł G. , Kucharska B. , Sypien A. , Okane T.
Published: February 2015

A mathematical description for the (Zn) - coating formation with the presence of flux in the zinc bath is presented. This description includes the progressive vanishing of the products of the flux disintegration. A function which expresses the flux vanishing is formulated. The solidification of some phase sub-layers in the (Zn) - coating is considered with the use of a hypothetical pseudo-ternary phase diagram Fe-Zn-flux. Some relationships are formulated to define the varying Zn - solute redistribution as observed across the sub-layers. The relationships are based on the mass balance analyzed for the coating / bath / flux system. An amount of the growing phase in a given sub-layers is also defined mathematically.
Experiment and Numerical Modelling the Time of Plate-Shape Casting Solidification vs. Thermal Conductivity of Mould Material/ Eksperyment I Modelowanie Numeryczne Czasu Krzepniecia Odlewu Płyty W Funkcji Przewodnictwa Cieplnego Materiału Formy
Authors: Krajewski P.K. , Piwowarski G. , Zak P.L. , Krajewski W.K.
Published: February 2015

The paper presents results of measuring thermal conductivity of sand mould material and time of castings solidification evaluated from cooling curves and from Nova Flow & Solid numerical calculations. During the experiments pure Al (99,95%) plate was cast into the sand moulds. The analysed variable parameter in numerical calculations was mould thermal conductivity of fixed value taken from the range 0.5-0.9 W/(mK). Other mould parameters (initial temperature, mass density, heat capacity) and thermo-physical properties of liquid and solid casting were taken invariable. Basing on the measurements it was stated that thermal conductivity of the moulding sand has complex temperature variability, especially during the water vaporization and the obtained dependence should be used in the numerical calculations to improve their accuracy.
Kinetics and Mechanism of the Redox Reaction Between Pt(IV) Chloride Complex Ions and Sodium Thiosulfate in Aqueous Solution. Part I: Acidic Solution/ Kinetyka I Mechanizm Reakcji Redox Pomiędzy Chlorkowymi Jonami Kompleksowymi Pt(Iv) I Tiosiarczanem Sodu W Roztworach Wodnych. Część I: Roztwór Kwaśny
Authors: Pacławski K. , Piwowonska J.
Published: February 2015

In this work, spectrophotometric studies of the kinetics and mechanism of reaction between [PtCl6]2- complex ions and sodium thiosulfate, were carried out. The influence of different conditions, such as: initial concentrations of reductant and platinum(IV) complex ions, ionic strength, pH and temperature on the rate constant, was experimentally determined. From the obtained results, the molecularity of the first elementary step, value of the enthalpy and entropy of activation in Eyring equation as well as corresponding rate equation, were experimentally determined. It was found that the reaction is relatively slow and leads to the S, Pt and PtS colloids formation. The best conditions for solid phase formation containing Pt are at pH = 5.