bluuebunny/crossref_metadata_2025_split huggingface dataset:
Corrosion in Formate Brines - 20 Years of Laboratory Testing and Field Experience
Authors: Howard Siv , Chrenowski Marcin 
Published: February 2015

This paper contains a thorough analysis of all available corrosion test results of formate brines combined with an extensive compilation of experience form 20 years of use of formate brines as completion and drilling fluids from hundreds of HPHT applications.
Formate brines were successfully introduced into the field as high pressure high temperature drilling and completion fluids in the early 90's. Today they are used in Extreme and Ultra HPHT applications worldwide. As they are the only group of non-hazardous brines that can reach the highest density requirements, they have been pushed to the extreme both when it comes to exposure temperature and exposure time. One of the biggest concerns when leaving completion brines downhole under extreme HPHT conditions is the compatibility with downhole materials.
The biggest corrosion concerns in completion brines are localized pitting corrosion and stress corrosion cracking (SCC) of the production tubing. C-steel casing material can suffer from pitting corrosion and sulfate stress cracking (SSC) and certain high nickel alloys can suffer from hydrogen embrittlement (HE) after extensive exposure to oilfield brines followed by sudden cooling of the material. Extensive laboratory testing of martensitic stainless steel has shown that this material can suffer from SCC in all oilfield brines. For formate brines, failures have typically been seen in long-term tests when very high yield stress has been applied and the pH buffer has been overwhelmed by CO2. 20 years of field experience at temperatures up to the upper recommended temperature limit of this material has shown an unbeatable track record of zero SCC failures of martensitic stainless steel. Duplex stainless steel tubing material has also never failed from SCC in formate brines.
Material compatibility is an increasing concern in future HPHT wells where downhole material is being exposed to even higher temperatures. All operators are cautious about challenging the temperature limits of completion brines and downhole materials. This review will be a useful tool for operators worldwide who are considering using formate brines for the first time in their future Extreme and Ultra HPHT applications.
Case Evaluating Acid Stimulated Multilayered Well Performance in Offshore Carbonate Reservoir: Bombay High
Authors: Rawat A. , Tripathi A. , Gupta C. 
Published: February 2015

Production trends in the carbonate reservoir systems vary due to a wide array of complexities: substantial reservoir heterogeneity produced fluid type, fluid driving mechanism and other factors that affect hydrocarbon flow through the reservoir to the well bore. Due to these complexities, stimulation techniques achieving diversion to increase the coverage are inculcated to optimize the production and recovery.
The paper provides case study of the offshore Bombay High Oil Field carbonate reservoir with multilayered lithology which possesses a permeability range of 5–500mD, temperatures that reach 116°C and an interval length of 26m perforating three pay zones, characterized by dual porosity and permeability, vugs and open fractures of varying apertures affecting the flow type and increased maturity of the fields causing a decrease in the reservoir pressure which gradually declined the well's productivity affecting recovery optimization.
Significant multiphase acid stimulation was designed with Viscoelastic Diverting Acid (VDA) technique for higher injecting rate operations based on rheological behavior in accordance with the complex porosity/permeability profile obtained by LWD measurements and images. The paper includes the pre- and post- Viscoelastic Diverting Acid treatment plots of the field along with the production performance data with Productivity Indices (PI) of the well calculated showing consequential results in the reservoir performances in affect with the stimulation.
The objective of the paper is to compare the percentage change in pre- and post- stimulated performance of the well covering the lithological complexities of the field, design and post treatment evaluation and showcase other critical areas of acid stimulation In multilayered well.
Multiple Identification in Surface Seismic Data through VSP Multiple Analyses: A Case Study
Authors: Human Tertius , Kunaifi Sunawar , Surasky Alan 
Published: February 2015

Both surface and interbed-generated multiples are an integral part of surface seismic datasets, and several techniques are used to identify and remove them. Unfortunately, there is not a single technique that can accurately identify and remove every multiple in a dataset, so interpreters often work with datasets that contain several multiples.
A vertical seismic profile (VSP) has a unique geometry in that the receivers are in the subsurface and can, therefore, record both a down-going and up-going wave field. The down-going wave field is used for deterministic deconvolution and can successfully identify and remove all multiples. The resultant corridor stack is multiple free and can then be compared to the surface seismic. Several techniques can then be used to identify any residual multiples in the surface seismic data, including information about the origin.
This paper presents a case study to identify multiples in the surface seismic data of a field in the Asia Pacific region. The paper will show how the VSP data is processed to produce a corridor stack that is multiple free, a corridor stack that contains both primaries and multiples, and a stack that contains only multiples. These are then merged with the surface seismic data to accurately identify any residual multiples. The residual multiples can then be removed through further processing
Drilling Evolution of the Ultra Deepwater Drilling Campaign in Mexico, Perdido Fold Belt
Authors: Vallejo Victor G. , Olivares Aciel , Saavedra Octavio , Lopez Juan R. , Torres Manuel E. 
Published: February 2015

Description
In 2012, Pemex announced some major oil discoveries in a new exploration region with its first two Ultra Deep Water exploration wells. The first achieved the deepest well ever drilled in Mexico to a depth of 6,119 m and the second achieved drilling in the deepest water depth at 2,900 m. These wells have confirmed that Perdido has a high potential for commercial production. This reservoir was found in Lower Tertiary geological system.

Applications
Problems incurred while drilling out from under the large casing sizes (22", 18", 16") with tandem hole enlargement bottom hole assemblies. Shallow reservoirs need to be evaluated for hydrocarbon potential, but these shallow hole sections are in very large hole sizes that require optimizing the drilling and formation evaluation. The objective here is to drill, evaluate and enlarge with the same BHA. During the same trip, the simultaneous enlargement of the hole is made to avoid a second under reaming trip (22", 20", 17 ½", 16 ½", 13 ½").
The shallow vertical depth of the reservoirs and the shallow geohazards requires a directional well design avoids the shallow hazards and the directional build section is intended to intersect the drilling target. An alternative strategy is to acquire the full suite of wireline logs in a dedicated 12 ¼" pilot hole. Subsequently, an under-reaming trip is made for the hole enlargement. This second option is also very time consuming.

Results
The drilling group has evolved a tandem drilling assembly from traditional hole enlargements of 17½"x20" or 12¼"x 14 3/4" to more complex simultaneous drilling and hole enlargements BHA's of 12 ¼"x 16 ½"x20" or 12 ¼"x14½"x17 ½". These new assemblies incorporate the rotary steerable system with mechanical and hydraulic hole openers, plus a complete set of LWD measurements for supporting the real time formation and geo-mechanical evaluation. This combination assures that in one run, the hole is drilled, evaluated, and enlarged, reducing well bore stability risk, and saves time and resources.

Significance of Subject Matter
Pemex evaluated the reservoirs in the discovery of commercial quantities of hydrocarbons that can possibly double the oil reserves of Mexico
Orbital (Fusion) Welding for Small Bore Pipes
Authors: Salleh Lokman 
Published: February 2015

Design of subsea manifolds for deep-water production, should minimise flange and threaded connections to eliminate potential leakage points because these manifolds are normally left unattended on the seabed for a long time and could be as long as 25 years depending on the life span of the oil field. Sending crew to conduct repair is close to impossible and as a result, all pipe work is fully welded. The challenge is to weld these small bore pipes using traditional welding method example GTAW. Due to the size and the accessibility of these weld joints orbital (fusion) welding is the alternative.
Despite the fact that this welding process has been in the market for many years, producing good weld joints remains a challenge because the welding procedure is very sensitive to the welding parameters. A slight variation in one of the welding parameters will result in poor welding quality and the weld joint has to be cut out, because repair is not permissible, not like traditional welded joints. The welding parameters are: the two parent metal itself, the voltage and current input, travel speed, quality of the purging gas, material and the vicinity cleanliness. In addition to the need to stringently control the welding parameters, tests on the production welds has to be conducted regularly to maintain high quality.
This paper describes in detail the challenges that we faced and the remedies implemented in performing this orbital welding on small bore pipes for various materials namely Duplex, Inconel, and Stainless Steel.
Carbonate Pinnacle-Reef Velocity Modeling for Depth Conversion: Pitfalls and Best Practices
Authors: Adli Saiful , Hafez Hairul 
Published: February 2015

Many of the carbonate pinnacle discoveries within the Central Luconia province comprise of a solitary exploration well penetrating the crest, with velocity data from checkshot/VSP (Vertical Seismic Profile). As a result considerable uncertainties remain on the flanks of the undeveloped buildups. The construction of a robust velocity model relies on the approach of discrimination on the contrasting velocities within the carbonate/shale sequences. The resulting velocity model can have a sizeable impact on GRV (Gross Rock Volume), and often seen to be a first-order sensitivity in resource estimation.
This paper will look into the best practices of 3 different methods of velocity modeling to avoid underestimation of reserves (Lookup method, Surface based method and 3D grid based method). Special focus is made to where potential pitfalls may occur in each of the velocity modeling methodologies. Several real-world examples will be presented to compare the difference in GRVs through best practice and pitfall applications, while also using a recent appraisal well penetrating the carbonate flank as hard data to validate our velocity modeling theory.
Proper estimation of GRVs through robust velocity modeling will potentially make smaller fields more economical to explore/develop, while also increasing current available field reserves for improved reservoir management plans. Results from this paper will also serve as a guideline for all future carbonate velocity modeling within Central Luconia.
A National Survey of Parent Perspectives on Use of Patient Portals for Their Children’s Health Care
Authors: Costello L.E. , Gebremariam A. , Dombkowski K.J. , Clark S.J. 
Published: February 2015

SummaryObjectives: To assess parents’ current utilization and future willingness to use patient portals to interact with their child’s health care provider.Methods: A cross-sectional survey of a nationally representative sample of US parents was conducted using an established online panel. Bivariate analyses assessed associations between current utilization and future willingness to use patient portals, parental concerns, and demographic variables.Results: Among the 1,420 parent respondents, 40% did not know whether their child’s health practice offers the option of setting up a patient portal for their child. Of the 21% of parents who reported being offered the option of setting up a patient portal for their child, 59% had done so. Among parents who had the option but chose not to set up a patient portal for their child, lack of time and low perceived need were the main reasons cited. Current use and likelihood of future use was highest for viewing lab results and immunization records. The most common concern about patient portals was the security of the child portal system.Conclusions: Current use of patient portals by parents is low. Only about half of parents currently using or likely to use a portal perceive value in using portals for certain tasks, which suggests that providers will need to continue traditional communication mechanisms to reach their entire patient population.Citation: Clark SJ, Costello LE, Gebremariam A, Dombkowski KJ. A national survey of parent perspectives on use of patient portals for children’s health care. Appl Clin Inf 2015; 6: 110–119http://dx.doi.org/10.4338/ACI-2014-10-RA-0098
Effect of Chronic Stress on Ligature-induced Periodontitis in Inbred and Noninbred Rats: A Radiographic Study
Authors: Tonetto Mateus Rodrigues , Borges Alvaro Henrique , Pedro Fábio Luis Miranda , Santos Reidson Stanley Soares dos , Semenoff-Segundo Alex , Bandeca Matheus Coelho , Porto Alessandra Nogueira , Semenoff Tereza Aparecida Delle Vedove 
Published: February 2015

ABSTRACTAimThe aim was to compare the effect of chronic stress on ligature-induced periodontitis in inbred and noninbred female rats by means of a radiographic study.Materials and methodsAdult Lewis (inbred) and Wistar (noninbred) rats were used and divided into the following groups: Ligature/Stress Lewis Group (LSLG, n = 8); Ligature/Stress Wistar Group (LSWG, n = 8); Ligature Lewis Group (LLG, n = 8) and Ligature Wistar Group (LWG, n = 8). The animals were anesthetized and a silk thread was continuously kept around their second upper right molar. Then, groups LSLG and LSWG were subjected to physical stress test (physical restraint for 12 hours). After 15 days of ligature placement, the animals were euthanized. The right hemimaxilla was kept in formalin solution for 48 hours. Radiographs of the hemimaxillae were obtained using the parallelism technique and subsequently submitted to a standardized radiographic processing. The examiner was blinded to the groups and calibrated. The bone height level was measured and the data were subjected to statistical analysis (ANOVA, Tukey, p < 0.05).ResultsLSWG showed bone destruction significantly higher than that of LSLG (32.1 ± 1.45 mm and 23.6 mm ± 2.13, respectively). Similarly, LWG showed bone destruction significantly higher than that of LLG (28.6 ± 1.18 mm and 25.2 ± 2.76 mm, respectively).ConclusionInbred rats (Lewis) are less susceptible to the effects of chronic stress than are noninbred rats (Wistar) in relation to ligature-induced periodontitis.Clinical significanceEpidemiological studies have shown a relationship between stress and periodontitis. One of the major difficulties of this type of research is the bias of the exact diagnosis of the patient's emotional state. Inbred lines animals have standards-specific neuroendocrine, this allows answers about the susceptibility of periodontal disease, making knowledge applicable in future clinical trials.How to cite this articleSemenoff-Segundo A, Borges AH, Bandeca MC, Porto AN, Pedro FLM, dos Santos RSS, Tonetto MR, Semenoff TADV. Effect of Chronic Stress on Ligatureinduced Periodontitis in Inbred and Noninbred Rats: A Radiographic Study. J Contemp Dent Pract 2014;15(5):556-560.
Craniofacial Fibrous Dysplasia with Facial Asymmetry, Canted Occlusion and Open Bite: A Case Report with 2 Years Follow-up
Authors: Jain Sandhya , Newaskar Vilas , Ali Munira 
Published: February 2015

ABSTRACTAimFibrous dysplasia is a benign fibro-osseous disorder of unknown etiology that may affect the craniofacial region causing significant impairment of facial esthetics and function. This paper reports a case of a 21-year-old male, which was investigated and diagnosed with craniofacial fibrous dysplasia involving an overgrowth over right maxillary and mandibular region associated with facial asymmetry, severe occlusal cant and anterior open bite. Management of the case included surgical excision, cosmetic contouring and orthodontic intervention. The case was reviewed over a period of two years, which demonstrate stable treatment outcome.How to cite this articleGupta S, Jain S, Newaskar V, Ali M. Craniofacial Fibrous Dysplasia with Facial Asymmetry, Canted Occlusion and Open Bite: A Case Report with 2 Years Followup. J Contemp Dent Pract 2014;15(5):636-645.
Seeing and Hearing the Other: A Jewish Israeli Teacher Grapples with Arab Students' Underachievement and the Exclusion of Their Voices
Authors: Hager Tamar 
Published: February 2015

This paper addresses my political and pedagogical resistance to the institutional discrimination of Palestinian Arab students in Israeli academia. Describing my instinctive negative reactions (frustration, helplessness, anger) towards what seems at first sight as their reluctance to study, I go on to criticize my own and other lecturers' tendency to blame the victim by analyzing the structural, cultural, political and social obstacles encountered by Arab students in Israeli institutions of higher education. The paper mainly focuses on the story of my resistance to this prevailing social and political structure. Adopting feminist critical pedagogy in my course "Representing Disability in Literature and the Cinema", I have created a space for my Arab students to overcome at least temporarily their repression by the Israeli academic system. The process of empowerment and the subsequent educational transformative and liberating exchange has enabled all participants to grant Arabs' transparent and excluded knowledge a significant social, cultural and political place, thus creating new and more culturally sensitive knowledge. Confronting the empowering effects of this method, I conclude my paper by suggesting some explanations as to the rarity of critical feminist pedagogies in Israeli academia.
Different from Us: Teaching About the Rich After Occupy and the Great Recession
Authors: Ohmann Richard 
Published: February 2015

In a famous imaginary exchange, F. Scott Fitzgerald said, "The rich are different from us." Ernest Hemingway replied, "Yes, they have more money." Most critics have thought the epigram attributed to Fitzgerald more perceptive about class in the United States than the one attributed to Hemingway. But if we're looking for a wry take on how class has been understood, in the media and among college students, Hemingway's comment is pretty good.
The Lusty Court of Camelot (1967): Exploring Sexuality in the Hollywood Adaptation
Authors: Woller Megan 
Published: February 2015

Abstract
The film adaptation of Lerner and Loewe’s Camelot reinserts sex into the musicalized legend. This article examines key scenes, including musical numbers, that focus on the relationships between the two primary (and overlapping) couples. The film’s restrained but present depiction of sexuality further reflects important changes in the film industry.
Plug-In to Fear: Game Biosensors and Negative Physiological Responses to Music
Authors: Mitchell Helen 
Published: February 2015

Abstract
The games industry is beginning to embark on an ambitious journey into the world of biometric gaming in search of more exciting and immersive gaming experiences. Whether or not biometric game technologies hold the key to unlock the "ultimate gaming experience" hinges not only on technological advancements alone but also on the game industry’s understanding of physiological responses to stimuli of different kinds and its ability to interpret physiological data in terms of indicative meaning. With reference to horror-genre games and music in particular, this article reviews some of the scientific literature relating to specific physiological responses induced by "fearful" or "unpleasant" musical stimuli and considers some of the challenges facing the games industry in its quest for the ultimate "plugged-in" experience.
Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia
Authors: Wang Xiao‐Hui , Hong Qing‐Ling , Shao Li‐Yang , Zhai Quan‐Guo , Jiang Yu‐Cheng , Ai Xuan , Chen Yu , Li Shu‐Ni 
Published: August 2024

AbstractThe nitrate electroreduction reaction (NO3RR) offers an eco‐friendly alternative to the Haber–Bosch technology for ammonia (NH3) synthesis. However, the complex reaction process and diverse products make efficient NH3 synthesis challenging. Therefore, the rational design and preparation of highly efficient electrocatalysts are crucial for NO3RR. Herein, ultrathin copper‐nickel oxide (Cu‐NiO) nanosheets (Cu‐NiO UTNSs) are synthesized via the cyanogel‐NaBH4 hydrolysis‐reduction method, which are applied for the cathodic NO3 RR to NH3‐assisted with the anodic sulfur ion (S2−) oxidation reaction (SOR) in an electrolyzer. The ultrathin nanosheet structure, the interaction between NiO and Cu, and the formation of oxygen vacancy contribute to generating the rich active sites, regulating the electronic structure, and improving the substance adsorption. Thus, the Cu‐NiO UTNSs exhibit excellent electrocatalytic performance for NO3RR and SOR. As a bifunctional Cu‐NiO UTNSs||Cu‐NiO UTNSs electrolyzer, it can reach 10 mA cm−1 at only 0.1 V for NO3−‐to‐NH3 conversion at the cathode and S2−‐to‐S8 conversion at the anode. This work provides a promising approach for producing value‐added chemicals at a low electrolysis voltage and a strategy for pollutant treatment.
Spinel‐Type Metal Oxides with Tailored Amorphous/Crystalline Heterointerfaces for Enhanced Electrocatalytic Water Splitting
Authors: Wang Mengying , Feng Xufang , Li Shan , Ma Yuxing , Peng Yuxin , Yang Shujiao , Liu Yining , Lei Haitao , Dang Jingshuang , Zhang Wei , Cao Rui , Zheng Haoquan 
Published: August 2024

AbstractMetal oxides with spinel structure have garnered increasing attention as promising alternatives to noble metal‐based electrocatalysts. However, these electrocatalysts often fail to simultaneously exhibit high activity and stability for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), limiting their applications in electrocatalytic water splitting. Herein, crystalline/amorphous heterogeneous interfaces are successfully introduced into spinel NiCo2O4 nanosheets, which are grown in situ on carbon cloth (CC), denoted as NiCo2O4‐B‐CC. The amorphous/crystalline heterostructures combine the advantages of both phases in electrocatalysts. The amorphous phase of the spinel NiCo2O4 nanosheets modulates the electron density, provides abundant oxygen single vacancies as active sites, and enhances the corrosion resistance, while the crystalline phase improves conductivity. Density functional theory (DFT) calculations are performed to investigate the influence of surface oxygen single vacancy (SVO) on the activity of the OER and HER processes. The NiCo₂O₄‐B‐CC exhibits overpotentials of only 26 mV for HER and 215 mV for OER at a current density of 10 mA cm−2. It exhibits excellent electrocatalytic performance for water splitting, achieving a current density of 400 mA cm−2 at an applied voltage of 2.0 V. The construction of crystalline/amorphous heterogeneous interfaces in electrocatalysts provides novel approach for enhancing the electrocatalytic performance of metal oxides in water splitting.