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Collaborating Authors
Bangladesh
Integration of energy companies and the communities in which they operate was the theme of a recent webinar hosted by SPE's Diversity and Inclusion (D&I) Committee. Using the United Nations' (UN) Sustainable Development Goals as the backdrop for the discussion, panelists from around the globe discussed the roles energy companies play in engaging the communities in which they operate (Figure 1). The event was hosted by Patricia E. Carreras, general director of Blue Moon Strategies, an energy consulting company, and chair of the D&I Committee. The panel comprised Alejandro Arbelaez, performance, framework, and standards team manager of Chevron's Technical Center; Ignatiy Volnov, geology and reservoir deputy director department for LUKOIL overseas Iraq exploration; and Laura Precupanu, senior expert in OMV Petrom's Capability Development Value Center in Romania. The panelists began the discussion by selecting some of the sustainable development goals and relating them to their personal and their companies' experiences.
- Asia > Middle East > Iraq (0.36)
- Europe > Romania (0.26)
- Europe > Italy > Basilicata > Val d'Agri Concession > Val'd Agri Field (0.99)
- Asia > Bangladesh > Sylhet Field (0.97)
- Asia > Bangladesh > Sylhet Division > Moulvibazar District > Block 14 > Moulavi Bazar Field (0.97)
- Asia > Bangladesh > Habiganj Field (0.97)
Modelling and Simulation of Natural Gas Condensate Production Using Artificial Neural Network
Ashinze, A. S. (Department of Chemical Engineering and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Ekiti-State, Nigeria) | Adeniyi, A. T. (Department of Chemical Engineering and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Ekiti-State, Nigeria) | Giwa, A. (Department of Chemical Engineering and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Ekiti-State, Nigeria)
Abstract Natural gas condensates are hydrocarbon liquid streams separated from natural gas when it is cooled to temperatures within the upper and lower limits of the hydrocarbon dewpoint curve at a definite pressure in a cryogenic gas plant. They find useful applications in the petroleum and petrochemical industry for production of high octane-petrol, jet, diesel and boiler fuels as well as in production of aromatics, olefins and other monomers used in the production of plastics, synthetic rubbers, resins and fibers. This research paper focused on modelling the process involved in obtaining natural gas condensates from raw natural gas in a cryogenic plant. Stationary-state process data were obtained from a natural gas processing facility in southern Nigeria. The data were pre-processed, five inputs and three output variables were then carefully chosen and arranged in cell arrays in Microsoft Excel before being incorporated into a written MATLAB m-file script, which was ran to generate time-series input-output datasets in Microsoft Excel via a developed Simulink transfer function model. The generated chaotic time series dataset was then fed into the neural network graphical user interface of MATLAB R2021a software and optimized using Levenberg Marquardt, Bayelsian regularization and conjugate gradient algorithms respectively to develop neural network models that represented the production process. Two key indices, namely the mean squared error (MSE) and regression value were used to evaluate the level of accuracy of the developed neural network models. The results obtained revealed that the neural network models developed could effectively capture the underlying trend in the time-series dataset with the Levenberg-Marguardt optimized-neural network having a faster convergence time of 10 seconds, higher regression value of 0.999 and lower MSE value of 0.0489.
- Materials > Chemicals > Commodity Chemicals > Petrochemicals (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Asia > Bangladesh > Sylhet Division > Habiganj District > Block 12 > Bibiyana Field (0.99)
- Asia > Middle East > Iran > Bushehr > Zagros Basin > Nar Field (0.89)
Structural initiation along the frontal fold-thrust system in the western Indo-Burman Range: Implications for the tectonostratigraphic evolution of the Hatia Trough (Bengal Basin)
Abdullah, Rashed (Jahangirnagar University) | Hossain, Md. Shahadat (Jahangirnagar University) | Aktar, Md. Soyeb (Jahangirnagar University) | Hossain, Mohammad Moinul (Bangladesh Petroleum Exploration and Production Company Limited, (BAPEX)) | Khanam, Farida (Bangladesh Petroleum Exploration and Production Company Limited, (BAPEX))
Abstract The Bengal Basin accommodates an extremely thick Cenozoic sedimentary succession that derived from the uplifted Himalayan and Indo-Burman Orogenic Belts in response to the subduction of the Indian Plate beneath the Eurasian and Burmese Plates. The Hatia Trough is a proven petroleum province that occupies much of the southern Bengal Basin. However, the style of deformation, kinematics, and possible timing of structural initiation in the Hatia Trough and the relationship of this deformation to the frontal fold-thrust system in the outer wedge (namely, the Chittagong Tripura Fold Belt) of the Indo-Burman subduction system to the east are largely unknown. Therefore, we have carried out a structural interpretation across the eastern Hatia Trough and the western Chittagong Tripura Fold Belt based on 2D seismic reflection data. Our result suggests that the synkinematic packages correspond to the Pliocene Tipam Group and the Pleistocene Dupitila Formation. This implies that the structural development in the western Chittagong Tripura Fold Belt took place from the Pliocene. In the Hatia Trough, the timing of structural activation is slightly later (since the Plio-Pleistocene). In general, fold intensity and structural complexity gradually increase toward the east. The presence of reverse faults with minor strike-slip motion along the frontal thrust system in the outer wedge is also consistent with the regional transpressional structures of the Indo-Burman subduction system. However, to the west, there is no evidence for strike-slip deformation in the Hatia Trough. The restored sections indicate that the amount of eastโwest shortening in the Hatia Trough is very low (maximum 1.2%). In contrast, to the east, the amount of shortening is high (maximum 13.5%) in the western margin of the Chittagong Tripura Fold Belt. In both areas, the key trapping mechanism includes anticlinal traps, although stratigraphic and combinational traps are possible, but this requires further evaluation.
- Asia > Bangladesh > Chittagong (0.93)
- Asia > India > Tripura (0.92)
- Phanerozoic > Cenozoic > Quaternary > Pleistocene (0.76)
- Phanerozoic > Cenozoic > Neogene > Pliocene (0.76)
- Geology > Structural Geology > Tectonics > Compressional Tectonics > Fold and Thrust Belt (1.00)
- Geology > Structural Geology > Fault > Dip-Slip Fault > Reverse Fault > Thrust Fault (0.82)
- Asia > Bangladesh > Surma Basin (0.99)
- Asia > India > Tripura > Bhuban Formation (0.94)
A New Mathematical Workflow to Predict Permeability Variation using Flowing Gas Material Balance
Haq, Bashirul (Department of Petroleum Engineering, KFUPM) | Al Shehri, Dhafer Abdullah (Department of Petroleum Engineering, KFUPM) | Mohammed, Isah (Department of Petroleum Engineering, KFUPM) | Olayiwola, Teslim (Department of Petroleum Engineering, KFUPM) | Muhammed, Nasiru Salahu (Department of Petroleum Engineering, KFUPM) | Hasan, Zahid (Subsea, Asia Pacific, TechnipFMC)
Abstract In the dynamic approach, production data including the flowing wellhead or bottomhole pressures are used to conduct the material balance analysis to determine the gas in place at any time during the life of well. However, the procedure did not extend to identify the well health issues such as permeability variation. The objective of this research is to develop a simplified mathematical workflow to identify and verify permeability variation using flowing gas material balance. In this approach, a new form of flowing gas material balance equation is derived by adding permeability variation term. In this new mathematical workflow, linear and exponential curve fitting tools along with the flowing material balance analysis are used to predict well expected behavior. The prediction is then compared with initial well production behavior. The deviation of the prediction and the expected production behavior formed the basis of permeability variation. The component of the model is tested with known data and then the total model is verified with known values. After that, the workflow is applied in the gas well. The new model prediction is validated using field data and the prediction compares quite well. The well health diagnostics are successfully compared with known well issues from an active gas field. Results presented in this paper will show that the novel workflow is able to accurately predict permeability variations in both constant and variable production rates. In addition, the new workflow enables the production engineers to send an alarm to take corrective measure about the issue and to diagnose production issues like permeability variation.
- Asia > Bangladesh > Bakhrabad Field (0.99)
- Europe > United Kingdom > North Sea > Central North Sea > South Viking Graben > Block 9/28a > Crawford Field (0.93)
Summary The brittleness index (BI) has major implications for hydraulic fracture studies and production toward optimized recovery in unconventional reservoirs. The paucity of brittleness studies in Mizoram and Upper Assam, located in northeastern India, motivates us to take up multimineral modeling and estimation of BI. Two commonly used BI estimation approaches, mineralogical and geomechanical, have been implemented to characterize the shaly sandstone in the study area. Laboratory analyses of the available drill-cutting samples and crossplots from well log data along with previous literature confirm the types of minerals present in the study area. With this mineralogical information, a new approach of BI log estimation from multimineral modeling is suggested here using conventional log data in the absence of core/drill cutting samples. A multimineral model for Mizoram and Upper Assam is developed by using bulk density (ฯ), compressional sonic velocity (Vp), shear sonic velocity (Vs), lithodensity, and acoustic impedance (AI) logs to calculate volumetric percentage of minerals. Estimated mineralogical BI from well log data using four established models are compared and calibrated with X-ray diffraction (XRD)-derived BI to validate the proposed procedure. Most brittle zones having a BI โฅ 66% are demarcated for high Youngโs modulus (Y โฅ 60 GPa) and low Poissonโs ratio (ฮฝ โค 0.25) values in the Y vs. ฮฝ crossplot for the study area. The presence of brittle minerals estimated from both XRD and the multimineral model suffices the reason for the high brittleness of shaly sandstone in Mizoram compared with Upper Assam.
- North America > United States > Texas (1.00)
- Asia > India > Mizoram (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Sandstone (1.00)
- Geology > Mineral (1.00)
- Geology > Geological Subdiscipline > Geomechanics (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (0.30)
Quantitative identification of diagenetic facies is critical for favorable reservoir prediction. In this study, the diagenetic facies of the Chang-8 reservoir in the Zhenbei area of the Ordos Basin was investigated using an integrated analysis of casting thin sections, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The Chang-8 reservoirs can be subdivided into five major diagenetic facies categories: 1) weakly-dissolved chlorite cemented facies, 2) moderately-compacted mineral dissolution-susceptive facies, 3) moderately-dissolved kaolinite-bearing facies, 4) moderately-compacted carbonate cemented facies, and 5) strongly-compacted tight sandstone facies. On the basis of the above analyses, the diagenetic facies were identified from well logs by involving the supervised-mode self-organizing-map neural network (SSOM) algorithm. Six wireline logs sensitive to the diagenetic facies characteristics were used as the model input, the diagenetic facies prediction model was built using SSOM. The prediction results of the diagenetic facies are in good agreement with the core analysis types, with a matching of 83.87%. Our work also sheds light on reservoir typing by linking the diagenetic facies with reservoir quality and oil testing data.
- Asia > China > Shanxi Province (0.36)
- Asia > China > Shaanxi Province (0.36)
- Asia > China > Gansu Province (0.36)
- Geology > Sedimentary Geology (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Sandstone (1.00)
- Geology > Mineral (1.00)
- Europe > Ireland > County Mayo > Slyne Trough > North Atlantic Ocean > Slyne Trough > Deepwater License 2/93 > Corrib Field (0.99)
- Asia > China > Shanxi > Ordos Basin > Changqing Field (0.99)
- Asia > China > Shaanxi > Ordos Basin > Changqing Field (0.99)
- (4 more...)
- Reservoir Description and Dynamics > Reservoir Characterization > Sedimentology (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)
- Data Science & Engineering Analytics > Information Management and Systems > Artificial intelligence (1.00)
Abstract The role of liquefied natural gas (LNG) in the global energy system is increasing. In 2000, 11 countries were importing LNG. By 2017, that number had risen to 40 (International Gas Union, 2017). In the Middle East alone, LNG imports have increased by more than 380% over the last three years (S&P Global Platts, 2017). This trend is expected to continue as countries throughout the region, along with others across Asia, Africa, and South America seek to capitalize on cleaner burning and abundant natural gas supplies worldwide. With increasing population growth and deficits in power generation capacity in many developing parts of the globe, the LNG-to-power concept has emerged as an important driver of future sustainability. However, the costs involved in transitioning power projects to make use of LNG are enormous. One significant challenge that these projects face is the co-development and potential co-financing of the LNG plant, along with supply, distribution and underlying power infrastructure. LNG-to-power projects can also potentially suffer from "project-on-project" risk due to the interdependency of the construction and commissioning of facilities and infrastructure. Overall, the ability to secure financing from a variety of debt and equity sources throughout the project lifecycle is critical to success. Innovative project financing structures allow for the generation of large debt capacities, while passing project risk to the lenders. In such cases, sponsors are able to assume limited recourse after project start-up and in many cases, enjoy flexibility of loan repayment, thus contributing to overall project economics. Co-financing also alleviates investment risk and helps raise capital at a relatively low cost, which benefits sponsors and investors alike. Financing solutions must be tailored to meet the needs of the project, with risk and returns being borne by the sponsor and different classes of investors (i.e., equity holders, debt providers, quasi-equity investors, etc.). This paper will discuss the many challenges that must be addressed in order to bring LNG-to-power projects to life, with a particular focus on the unique risk elements that are presented to lenders and investors throughout development.
- Asia (1.00)
- Africa (0.69)
- Europe > Middle East (0.35)
- North America > United States > Texas (0.28)
- Asia > Philippines (0.89)
- Asia > Bangladesh (0.89)
- Africa > Cote d'Ivoire > Gulf of Guinea > Ivory Coast Basin (0.89)
Predictive distribution of high-quality tight reservoirs of coarse clastic rocks by linking diagenesis to sedimentary facies: Evidence from the upper Sha 4 Member in the northern Bonan Sag, Bohai Bay Basin, eastern China
Wu, Dong (Research Institute of Exploration and Development, Postdoctoral Scientific Research Working Station) | Liu, Xiantai (Shengli Oilfield Company) | Du, Yushan (Research Institute of Exploration and Development) | Jiang, Long (Research Institute of Exploration and Development) | Cheng, Ziyan (Research Institute of Exploration and Development)
Abstract Coarse clastic rocks of the upper Sha 4 Member in the northern Bonan Sag of the Bohai Bay Basin in eastern China are important hydrocarbon reservoirs. The deposits are tight reservoirs owing to the low porosity (less than 10%) and low permeability (less than 1ย mD). Because of the strong heterogeneity, although the reserve in the northern Bonan Sag is remarkable, only 4.9% of the reserves are recovered. We have studied these tight reservoirs by linking diagenesis to sedimentary facies to help predict the distribution of high-quality tight reservoirs. Petrographic analysis is undertaken based on cores, thin sections, X-ray diffraction and scanning electron microscope, helpful to understand the impacts on tight reservoirs of sedimentary factors and diagenesis factors. Sedimentary microfacies, lithologic characteristics, reservoir property, diagenesis, and diagenetic minerals are studied. Coarse clastic rocks are deposited mainly in nearshore subaqueous fans and fan deltas. The multistage sandstones are the valid reservoirs of coarse clastic rocks and dominated by feldspathic litharenite, lithic arkose, and arkose. The reservoir property is poor principally owing to the strong compaction and cementation. Pores are composed of secondary pores and primary pores. The secondary pore, generated in the dissolution of detrital minerals and/or cements, is the major type of pores and important to porosity improvement. By linking diagenesis to sedimentary facies, it can be concluded that high-quality tight reservoirs of coarse clastic rocks of the upper Sha 4 Member in the northern Bonan Sag of Bohai Bay Basin in eastern China are associated with medium to coarse-grain sandstones, found in the middle part of underwater distributary channel deposits in fan deltas and in the middle part of underwater channel deposits in nearshore subaqueous fans, with abundant secondary porosity but low cement contents, vertically at depths ranging from 3500 to 4100ย m.
- Asia > China (1.00)
- North America > United States > Texas (0.93)
- North America > United States > Colorado > Garfield County (0.28)
- (2 more...)
- Phanerozoic > Mesozoic (1.00)
- Phanerozoic > Cenozoic > Paleogene (0.46)
- Geology > Sedimentary Geology (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Sandstone (1.00)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock (0.71)
- Oceania > New Zealand > North Island > Taranaki Basin (0.99)
- Oceania > Australia > South Australia > Cooper Basin (0.99)
- Oceania > Australia > Queensland > Cooper Basin (0.99)
- (22 more...)
Applications for Active membership have been received from the listed candidates. This publication does not constitute election but places the names before the membership at large in accordance with SEG's Bylaws, Article III, Section 5. If any member has information bearing on the qualifications of these candidates, it should be sent to the president within 30 days. The list can be viewed online at .
- Europe (1.00)
- Asia > China (1.00)
- Africa (1.00)
- (3 more...)
- Energy > Oil & Gas > Upstream (0.50)
- Government > Regional Government > Asia Government (0.35)
Abstract This paper describes the practical applicacion of a method known as Flowing Gas Material Balance FGMB (L. Mattar and Mcneil, 1997) for reserve's estimation using bottomhole flowing pressure data in two dry gas fields in Mexico. The main purpose of this work is to apply the method in real cases having enough data and make a comparison with other standard methods of reserves estimation (J. Lee, 1996 and G.J. DeSorcy, 1994) such as Volumetric, Decline Curve Analysis, Conventional Material Balance and Numerical Simulation to see the results and validate the efficacy of its application. There are some premises should be considered before its application that will be explained, besides the advantages and results of this comparison which showed differences no greater than 10% with respect to the method more trustable to report reserves for these reservoirs.
- North America > Mexico (0.89)
- North America > United States (0.69)
- Reservoir Description and Dynamics > Reservoir Simulation (1.00)
- Reservoir Description and Dynamics > Reserves Evaluation > Estimates of resource in place (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Drillstem/well testing (1.00)
- Production and Well Operations > Well & Reservoir Surveillance and Monitoring (1.00)