bluuebunny/crossref_metadata_2025_split huggingface dataset:
Semi-Analytical Production Simulation of Complex Hydraulic Fracture Networks
Authors: Zhou Wentao , Banerjee Raj , Poe Bobby , Spath Jeff , Thambynayagam Michael 
Published: May 2012

AbstractThe application of horizontal well drilling and multi-stage fracturing has become a norm in the industry to develop unconventional resources from ultra-tight formations. A complex fracture network generated in the presence of stress isotropy and pre-existing natural fractures immensely extends reservoir contact and improves hydrocarbon production.A semi-analytical method is presented in this paper to simulate the production from such complex fracture network. This method combines an analytical reservoir solution with a numerical solution on discretized fracture panels. The mathematics are briefly introduced. A number of case studies are presented, from a simple planar fracture to a real field example from the Barnett shale. Production behaviour and the key flow regimes are discussed.With its simplicity, yet capturing the physics of the transient production performance, this approach provides an accessible tool for people from multiple disciplines in unconventional resource development to rapidly evaluate treated-well productivity and stimulation effectiveness.
Successful Implementation of Abrasive Perforation in Highly Deviated HP/HT Gas Well
Authors: Al-Atwi Mohammed A. , Al-Driweesh Saad M. , Al-Sagr Abdulaziz M. , Garzon Francisco O. , Al-Mulhim Abdallah A. , Kharrat Wassim , Stuker John , Keong Azwan Hadi 
Published: May 2012

Abstract
This paper illustrates a specific perforation technique using Coiled Tubing with an abrasive jetting tool in a highly deviated HP/HT gas well suffering severe drilling formation damage and describes how this technique bypassed the damage and increased the efficiency of acid stimulation, allowing the well to flow as expected.
Occasionally, while drilling carbonate (Khuff) gas wells in Saudi Arabia fluid losses encountered are which often leads to stuck drill pipe. Hence, a specific mud system designed with loss circulating materials (LCM) including calcium carbonate chips, graphite, and fibers is used to stop losses and reduce the risk of stuck pipe. However, the design side of this mud system creates a high near wellbore damage with very low acid solubility.
The abrasive jetting tool was selected as the perforating method because slots cut with sand slurry generate clear passage across the formation bypassing any formation damage. The slots through the casing, cement and formation were created by pumping nitrified sand slurry. Nitrogen was used for the first time in Khuff gas wells along with an orienting tool in order to increase the slot cutting efficiency and obtain deeper penetration to bypass the formation damage and allowing the acid to reach the virgin reservoir. Real-time depth correlation and differential pressure measured across the abrasive jetting nozzles were also used for the first time.
In contrast to wells drilled with the same type drilling mud but perforated with different methods, this well showed a noticeable increase in wellhead pressure during the abrasive slotting procedure. The follow up acid stimulation performed at average pump rates and pressures for a non-damaged Khuff-C gas wells.
Slot cutting design and execution, acid stimulation treatment, and well performance will be discussed to evaluate the abrasive perforation and demonstrate the advantages of generating clean and deep tunnels.
Starting up Mega-Projects, Experiences with the Start-Up of Pearl GTL
Authors: Cornelisse Roel , Gort Richard , Westerink Peter 
Published: May 2012

Abstract
Pearl GTL is a unique world scale Gas-To-Liquids (GTL) Complex that integrates production from two offshore platforms to products that can be sold directly into the energy, oil products and chemicals markets. It is one of the biggest and most complex mega projects that has been implemented in the Energy industry to date and with it, the partnership of QP and Shell has taken a bold step: the success of Pearl GTL is fostered in many ways in development and integration of right leadership across all parties culminating in a Flawless Startup followed by Flawless Manufacturing.
This paper will look at how Shell has orchestrated the development of its leaders in the journey of Pearl GTL and provided the necessary continuity across different stages of the Project design and implementation to capitalize in a structured manner on thousands of lessons learnt from all parties involved in the 40 year journey from Gas-to-Liquids Research to Revenue.
Pearl GTL - Achieving a World Class Safety Performance
Authors: Munster Robert J. , Bralee Abigail V. 
Published: May 2012

Abstract
This paper will contain details of the following aspects of Qatar Shell GTL limited's implementation of leadership safety management.

The case for change: a culture of Leadership Safety
The continuing incidence of safety accidents in the construction and projects industry has driven the recognition that safety management requires a different approach from focusing solely on occupational safety and implementation of an HSSE Management System (HSSE MS).

Leadership role and journey
The management at Pearl GTL committed to emabarking on a leadership safety journey. Managers needed training, coaching and ongoing support to grow as safety leaders and support the development of the safety culture at Pearl GTL. The attributes of a good safety leader have been identified through personal experiences and practiced within a framework of five themes.

Five leadership safety themes
The five themes identified to frame and focus the developing Pearl GTL safety culture are: Worker's Welfare, Training, Life Critical Activities, Communications and Leadership. Activities were undertaken in each of these themes to engage the workforce and build the desired safety culture. This paper will describe the activities in each of these themes.

Celebrating Success
Recognition of good safety performance, rather than focusing on what was being done wrong, was a tool successfully used by Shell management during site visits. Recognition, often in the form of a telephone card, along with a request to call home and let the family know he was safe and recognised for doing a good job, drove a culture of compliance and intervention rather than a culture of perceived blame. Celebration of individual, team and site-wide safety performance was strongly encouraged to motivate and energise the workforce and to thank them for their contribution to Pearl GLT successes. Pearl GTL Safety Days and celebrations will be described.
Innovative Engineering Makes Maureen Development a Reality
Authors: Nichols J. H. , Westby K. A. 
Published: May 2012

Abstract
Phillips Petroleum is again on its path to pursuing innovative technology in the field of North Sea development that will stand for years to come. In cooperation with its partners in the Maureen Field Development Project, new and unique engineering concepts in four areas are being used: Pre-drilling of wells through a seabed template for subsequent tie-back to a drilling and production platform.A Tecnomare Steel Gravity platform (TSG) with a triangular base structure composed of three cylindrical tanks for ballast and oil storage inter-connected by a tubular framework.A Brown and Root designed integrated deck called HIDECK which is built, fully equipped and partially precommissioned, then mated with the TSG prior to tow-out.An Articulated Loading Column (ALC) with a concrete body for the Single Point Mooring terminal for offshore tanker loading.
All four concepts are new for the North Sea and these elements enabled the marginal Maureen Field to become economically viable during the feasibility stage.
The Maureen Field in Block 16/29a, which is located approximately 160 miles north east of Aberdeen in 314 feet of water, is being developed by a six member gruop led by Phillips Petroleum who acts as operator. The other coventurers are Petrofina, AGIP, Century Power & Light, Ultramar and British Electric Traction. The field was discovered in January 1973 when the bit penetrated the oil bearing Paleocene Sandstone. Three additional appraisal wells were subsequently drilled to prove that Maureen was a commercial prospect. Current development plans call for 12 Paleocene producers and 7 water injectors. Refer to Fig. 1. To date 7 wells including the exploratory wells have been drilled on the structure.
On-Shore Commissioning of Power Plant
Authors: Evans Albert R. 
Published: May 2012

Abstract
To carry out commissioning on dual fuel turbine driven generation power plant and electrical distribution equipment at the fabrication yard prior to installation in the UK sector of the North Sea.
To achieve this objective it was decided in the early stage of design to install the main generators, switchgear and all necessary controls for the main power distribution in one Module.

POWER MODULE LAYOUT
The module was divided by a mezzanine floor – on the lower level was installed the five main dual fuel turbine driven alternator units, with their associated control equipment.
On the mezzanine floor the high and low voltage switchgear was installed, along with the main transformers, synchronising panel and battery charger and batteries for the switchgear tripping and closing circuits.
For layout see Appendix 11.2

EQUIPMENT RATINGS

Main Turbine/Generators
The main turbine/generator units consisted of five Ruston TB:5000 turbines, with GEC Ltd alternators rated at 3.2 MW at 6.6 KV, 60 HZ, 0.8 pf.

High Voltage Switchgear/MCC
The High Voltage Switchgear and Motor Control Centre consisted of one complete unit, with the switchgear section located in the centre and the motor control centres to the right and left.
The Development of Articulated Buoyant Column Systems as an Aid to Economic Offshore Production
Authors: Smith John R. , Taylor Reginald S. 
Published: May 2012

Abstract
Floating or compliant platform systems are beginning to feature more strongly in proposed development scenarios, particularly in relation to economic production from both deeper waters and more complex or low reserve fields. This paper examines the applicability, function and performance of articulating buoyant column systems in such roles, as determined from a comprehensive research and development programme undertaken by Taylor Woodrow over the past three years.
The scope of the programme, covering hydrodynamic, material and structural studies, interfacing with production technology and construction and economic assessments is described. Particular emphasis is placed upon the evaluation of the complex interaction between compliant structures and the environment. It is concluded that articulated columns can provide cost effective alternative production systems over a range of applications, with functional and technical benefits.
Color stability and fluorescence of different orthodontic esthetic archwires
Authors: da Silva Dayanne Lopes , Mattos Claudia Trindade , de Araújo Marcus Vinicius Almeida , de Oliveira Ruellas Antônio Carlos 
Published: May 2012

AbstractObjective:To evaluate the color stability of six esthetic archwires at different time periods and their fluorescence.Materials and Methods:Samples were evaluated after 7, 14, and 21 days of immersion in staining solution. Color measurements were performed by means of a spectrophotometer according to the Commission Internationale de I'Eclairage L*a*b* system, and color changes (ΔE*) and National Bureau of Standards units were computed. The fluorescence of as-received samples was evaluated by two observers and compared with that of a bovine central incisor. Statistical differences were investigated using analysis of variance and Tukey's post hoc test.Results:All brands showed statistically significant color change after 21 days (ΔE* from 1.88 to 12.06). The Optis archwire (fiber-reinforced composite) presented the highest color alteration, although staining was observed only near its ends. The Trianeiro archwire (coated nickel-titanium) and the Ortho Organizers archwire (coated stainless steel) presented with less color change. The Optis archwire was the only one that presented with fluorescence similar to that of bovine teeth.Conclusions:All esthetic archwires assessed showed clinically noticeable color change after 21 days in staining solution. The optical properties of currently available esthetic archwires may not yet be ideal.
Treatment with Biologic Agents Improves the Prognosis of Patients with Rheumatoid Arthritis and Amyloidosis
Authors: KURODA TAKESHI , TANABE NAOHITO , KOBAYASHI DAISUKE , SATO HIROE , WADA YOKO , MURAKAMI SHUICHI , SAEKI TAKAKO , NAKANO MASAAKI , NARITA ICHIEI 
Published: May 2012

Objective.Reactive amyloid A (AA) amyloidosis is a serious and life-threatening systemic complication of rheumatoid arthritis (RA). We evaluated the safety of therapy with anti-tumor necrosis factor and anti-interleukin 6 biologic agents in RA patients with reactive AA amyloidosis, together with prognosis and hemodialysis (HD)-free survival, in comparison with patients with AA amyloidosis without such therapy.Methods.One hundred thirty-three patients with an established diagnosis of reactive AA amyloidosis participated in the study. Clinical data were assessed from patient records at the time of amyloid detection and administration of biologics. Survival was calculated from the date when amyloid was first demonstrated histologically or the date when biologic therapy was started until the time of death or to the end of 2010 for surviving patients. Patients who had started HD were selected for inclusion only after the presence of amyloid was demonstrated.Results.Fifty-three patients were treated with biologic agents (biologic group) and 80 were not (nonbiologic group). Survival rate was significantly higher in the biologic group than in the nonbiologic group. Nine patients in the biologics group and 33 in the nonbiologic group started HD. Biologic therapy had a tendency for reduced risk of initiation of HD without any statistical significance.Conclusion.Patients with amyloidosis have a higher mortality rate, but the use of biologic agents can reduce risk of death. The use of biologics may not significantly influence the HD-free survival rate.
Regards de lycéens sur les rôles masculins et féminins à Tijuana (Basse-Californie, Mexique)
Authors: Brugeilles Carole 
Published: May 2012

Résumé Le développement du recours à une perspective de genre pour expliquer les comportements sociodémographiques a donné un élan à l’analyse de la construction sociale du masculin et du féminin dans une approche relationnelle. Cependant malgré leur multiplication, les recherches sur les identités masculines et sur le regard des hommes sur les identités féminines semblent encore en retrait. Cette recherche exploratoire souhaite contribuer à cette connaissance en s’intéressant plus précisément aux représentations des rôles sexués d’adolescents lycéens à Tijuana, en Basse-Californie, au Mexique. Elle s’appuie sur l’analyse d’une enquête auprès de 1 057 lycéens. La pluralité des représentations des identités sexuées est évidente et les positions nettement progressistes ne dominent pas. La majorité des adolescents ne sont pas clairement dégagés de stéréotypes relatifs aux capacités intellectuelles et semblent adhérer à une « essentialisation » des différences, dont découlent « naturellement » des rôles sexués spécifiques. L’attachement à l’identité masculine classique est particulièrement marqué. La recherche des facteurs qui influencent les opinions souligne la complexité des processus de changements et l’école semble être un levier particulièrement important.
La migration des jeunes indiens mexicains aux États-Unis : enjeux, défis et nouvelles subjectivités
Authors: Moreschi Alejandra Aquino 
Published: May 2012

Résumé Vers la fin des années 1980, la migration internationale s’est imposée dans la vie quotidienne des Zapotèques de la Sierra Norte de Oaxaca, au sud du Mexique. Les communautés indiennes ont alors dû faire face à la dépopulation de leurs villages et à la transformation de leur économie paysanne traditionnelle par l’injection d’argent venu des États-Unis. Autre défi de taille : le changement des perspectives d’avenir et des projets de vie de la jeune génération. Cet article montre qu’aujourd’hui la migration des jeunes indiens ne répond pas seulement à une logique économique, mais traduit également l’existence de « besoins subjectifs » liés à la recherche, tant d’un nouveau style de vie permettant la mobilité spatiale et sociale, que de modèles de relations de couple et de famille plus ouverts. Bien que subjectifs, ces nouveaux « besoins » se sont généralisés au point de constituer un important moteur de changement dans la région et un enjeu majeur à la fois pour les familles zapotèques et pour les processus en cours de recouvrement de l’autonomie politique de ces communautés.
Les archives d’un prêtre savant à Istanbul : traces et supports mémoriels d’une communauté
Authors: Théodoridès Anna 
Published: May 2012

Cet article revient sur une enquête conduite auprès d’un prêtre orthodoxe rûm d’Istanbul qui, pour ne pas oublier, archive, sous forme de collections d’objets éclectiques, l’histoire de la communauté rûm, et en particulier du pogrom de la nuit du 6 au 7 septembre 1955. La constitution de ces collections résulte d’un travail actif de mobilisation de témoins et de récolte de pièces à conviction. Entreposés dans son « grenier », lieu de résistance et de non-capitulation, les objets sont assemblés selon un dispositif muséographique, au sein duquel mémoires individuelle et collective sont interconnectées. À partir de ce dispositif, il s’agit d’analyser la manière dont le prêtre construit ces collections comme un ensemble signifiant de supports de mémoire appelés à devenir des preuves pour l’histoire.
THE TRAGEDY CAUSED BY FAKE ANTIMALARIAL DRUGS
Authors: Ambroise-Thomas Pierre 
Published: May 2012

Counterfeit antimalarials (mainly artemisinin derivatives) is a crucial health problem in developing countries, particularly in Africa. The illegal production, sale and distribution of fake drugs is a huge market evaluated to several billion of dollars and represents more than 50% of the pharmaceutical market in several African countries. Fake drugs have led to a very great number of deaths from untreated malaria or fatality provoked by toxic ingredients. These fake medicines increase the risk of artemisinin resistance developed by the use of sub therapeutic dosages of antimalarials. Tackling this criminal traffic is the objective of an international programme created by WHO and involves the international police and custom organizations like INTERPOL. Several very important and encouraging results have been obtained, but the problem will be completely solved if genuine antimalarials, free-of-charge, are handed-over to populations in sub Sahara African countries.
“The Hallensians are Pietists; aren't you a Hallensian?”: Mühlenberg's Conflict with the Moravians in America
Authors: Atwood Craig D. 
Published: May 2012

ABSTRACT
The rivalry between two centers of German Pietism, Halle and Herrnhut, shaped the development of both the Lutheran Church and the Moravian Church in America. The conflict began in Germany, but Pennsylvania became a major battleground in the 1740s. After years of sometimes violent controversy, the Moravians and Lutherans eventually developed as separate denominations. The most famous episode was the encounter on December 30, 1742, between Zinzendorf and Henry Melchior Mühlenberg, but that was just the first skirmish. Mühlenberg continued to oppose the Moravians after Zinzendorf's departure for Europe. In Philadelphia, Lancaster, and Tulpehocken Mühlenberg fought publicly with the Moravians over who would supervise Lutheran ministry in America. Mühlenberg intervened in several Lutheran congregations that had pastors friendly to the Moravians and asserted his own authority over them. Both sides used law courts and the press to assert their claim to be considered true Lutherans and convince the public that the others were heterodox “Pietists.”
The 1775 Correspondence of John Wesley and Francis Okely
Authors: Yonan Jonathan 
Published: May 2012

ABSTRACT
On August 14, 1775, Francis Okely of Northampton, England, wrote a letter to the General Synod of the Moravian Church. Though a Moravian minister, his letter sought permission to preach for John Wesley in Towcester. Within his letter, Okely gave background to his request, including a paraphrase of a letter he had written to Wesley between July 24 and 31, 1775. His letter also reproduced a verbatim copy of the reply he later received from Wesley, dated July 31. This correspondence, apparently only preserved within Okely's August 14 letter, has never been published. It offers important insights into some of the interdenominational efforts to promote evangelical unity and to re-ignite evangelical revival in England.
Amyloid Directed Synthesis of Titanium Dioxide Nanowires and Their Applications in Hybrid Photovoltaic Devices
Authors: Bolisetty Sreenath , Adamcik Jozef , Heier Jakob , Mezzenga Raffaele 
Published: May 2012

AbstractThis paper reports β‐lactoglobulin amyloid protein fibrils directed synthesis of Titanium Dioxide (TiO2) hybrid nanowires. Protein fibrils act as templates to generate closely packed TiO2 nanoparticles on the surface of the fibrils using titanium (IV) bis (ammonium lactato) dihydroxide (TiBALDH) as precursor, resulting in the TiO2–coated amyloid hybrid nanowires. These amyloid fibrils also exhibit complexation with a luminescent water‐soluble semiconductive polythiophene (P3HT). TiO2 nanowires behave as electron acceptor while, P3HT as electron donor. In this way, amyloid‐TiO2 hybrid nanowires can serve in heterojunction photovoltaic devices. To demonstrate this, a photovoltaic active layer is prepared by spin coating the blended mixture of polythiophene‐coated fibrils and amyloid‐TiO2 hybrid nanowires. The current–voltage characteristics of these photovoltaic devices exhibit excellent fill factor of 0.53, photovoltaic current density of 3.97 mA·cm−2 and power conversion efficiency of 0.72%, highlighting a possible future role for amyloid‐based templates in donor–acceptor devices, organic electronics and hybrid solar cells.
Analyzing transformation of myelodysplastic syndrome to secondary acute myeloid leukemia using a large patient database
Authors: Shukron Ofir , Vainstein Vladimir , Kündgen Andrea , Germing Ulrich , Agur Zvia 
Published: May 2012

AbstractOne‐third of patients with myelodysplastic syndrome (MDS) progress to secondary acute myeloid leukemia (sAML), with its concomitant poor prognosis. Recently, multiple mutations have been identified in association with MDS‐to‐sAMLtransition, but it is still unclear whether all these mutations are necessary for transformation. If multiple independent mutations are required for the transformation, sAML risk should increase with time from MDS diagnosis. In contrast, if a single critical biological event determines sAML transformation; its risk should be constant in time elapsing from MDS diagnosis. To elucidate this question, we studied a database of 1079 patients with MDS. We classified patients according to the International Prognostic Scoring System (IPSS), using either the French‐American‐British (FAB) or the World Health Organization (WHO) criteria, and statistically analyzed the resulting transformation risk curves of each group. The risk of transformation after MDS diagnosis remained constant in time within three out of four risk groups, and in all four risk groups, when patients were classified according to FAB or to the WHO‐determined criteria, respectively. Further subdivision by blast percentage or cytogenetics had no influence on this result. Our analysis suggests that a single random biological event leads to transformation to sAML, thus calling for the exclusion of time since MDS diagnosis from the clinical decision‐making process. Am. J. Hematol. © 2012 Wiley Periodicals, Inc.