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George V. Chilingar - One of the best experts on this subject based on the ideXlab platform.
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Mathematical modeling of abnormally high Formation Pressures
Developments in Petroleum Science, 2020Co-Authors: M. R. Islam, George V. Chilingar, Simon Katz, Leonid F. Khilyuk, Alexander E. Gurevich, Fred Aminzadeh, John O. Robertson, Leonid A. BuryakovskyAbstract:Methodology of simulation of dynamic systems ; Analytical approach ; Analytical models ; Numerical models ; Tectonic and lithological modeling ; Numerical criterion and sensitivity analysis for time-dependent Formation Pressure in a sealed layer ; Formation Pressure in the case of constant fluid flow through the lower boundary of the Formation ; Box-type fluid flow ; Sensitivity analysis for the mean value of the Formation Pressure in the sealed permeable layer ; Criterion B/A and relaxation coefficient for the Western Kuban region in the southern part of Russia ; Examples of Formation Pressure development ; Identification of conductivity function for ^etroleum distribution in petroleum reservoirs.
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Methods of estimating and predicting abnormal Formation Pressures
Developments in Petroleum Science, 2020Co-Authors: George V. Chilingar, V. A. Serebryakov, Simon Katz, John O. RobertsonAbstract:Prediction of abnormally high Pressure in regions with nonequilibrium compaction ; Abnormal Pressure due to temperature variations ; Estimation and prediction of abnormally low Pressures un basins in permafrost regions ; Formation Pressure in regions with upthrown and downthrown blocks (uplift and subsidence of sedimentary rocks) ; Calculation of abnormal pore Pressure during drilling ; Radioactivity study of zones with abnormally high Formation Pressure ; Pulsed neutron capture logs ; Shale water influx - driving mechanism ; Various geophysical well logging methods.
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Origin of abnormal Formation Pressures
Developments in Petroleum Science, 2020Co-Authors: George V. Chilingar, John O. Robertson, H.h. RiekeAbstract:Compaction process ; State of stress in compacting shales ; Compaction models ; Creation and maintenance of abnormal Pressures ; Mechanisms generating abnormal Formation Pressure.
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prediction of subsidence relationship between lowering of Formation Pressure and subsidence due to fluid withdrawal
Energy Sources, 2000Co-Authors: V. A. Serebryakov, George V. ChilingarAbstract:A simple method is presented for calculating (predicting) the amount of compaction (and resulting subsidence) from the Pressure drop in Formation due to production, i.e., the increase in the effective Pressure pe (pe = pt - pp, where pt is the total overburden Pressure and pp is the fluid or pore Pressure). This work is based on extensive data collected in Russia. For example, large petroliferous areas in Western Siberia became marshlands as a result of fluid withdrawal. One should remember that sophisticated methods, such as FSMT (direct measurement of rock compaction by wireline tools in situ) and GPS (measurement of surface subsidence by satellite microwave Doppler techniques), are not yet available in many areas of the world.
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Differential sensitivity analysis and multi-variant simulation of Formation Pressure and temperature in heterogeneous media
Journal of Petroleum Science and Engineering, 1996Co-Authors: Simon Katz, George V. Chilingar, Leonid F. Khilyuk, Alexander E. GurevichAbstract:Abstract Methodology of differential sensitivity analysis and sensitivity-based aggregate simulation for Formation Pressure, temperature and fluid flow is developed here. It is aimed at estimation of variations of Formation Pressure, temperature and velocity field for fluid flow due to variations in the properties of the medium and fluids in the pores. It includes the use of the so-called “sensitivity functions” defined as partial derivatives of the Formation Pressure and temperature with respect to parameters of the rock and fluids in the pores. It is shown that the sensitivity functions are defined by the same system of equations as Formation Pressure and temperature fields with the right-hand side of the equations dependent on the type of sensitivity function. There are several important applications of the differential sensitivity analysis and sensitivity functions: (1) Sensitivity functions allow to estimate, under certain conditions, the magnitude of variation of Formation Pressure and temperature fields 1 (2) Using sensitivity function-based technique, it is possible to partially decouple the system of equations for Formation Pressure and temperature fields under conditions of slow variations of temperature or Pressure in time. (3) Differential sensitivity analysis may serve as a basis for calculation of multiple versions (aggregate simulation) of Formation Pressure and temperature fields due to various changes in the parameters of the medium and pore fluids.
Yanhong Wang - One of the best experts on this subject based on the ideXlab platform.
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intensification of methane and hydrogen storage in clathrate hydrate and future prospect
Journal of Natural Gas Chemistry, 2010Co-Authors: Xuemei Lang, Yanhong WangAbstract:Gas hydrate is a new technology for energy gas (methane/hydrogen) storage due to its large capacity of gas storage and safe. But industrial application of hydrate storage process was hindered by some problems. For methane, the main problems are low Formation rate and storage capacity, which can be solved by strengthening mass and heat transfer, such as adding additives, stirring, bubbling, etc. One kind of additives can change the equilibrium curve to reduce the Formation Pressure of methane hydrate, and the other kind of additives is surfactant, which can form micelle with water and increase the interface of water-gas. Dry water has the similar effects on the methane hydrate as surfactant. Additionally, stirring, bubbling, and spraying can increase Formation rate and storage capacity due to mass transfer strengthened. Inserting internal or external heat exchange also can improve Formation rate because of good heat transfer. For hydrogen, the main difficulties are very high Pressure for hydrate formed. Tetrahydrofuran (THF), tetrabutylammonium bromide (TBAB) and tetrabutylammonium fluoride (TBAF) have been proved to be able to decrease the hydrogen hydrate Formation Pressure significantly.
Geoffrey A. King - One of the best experts on this subject based on the ideXlab platform.
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Formation Pressure PREDICTION USING SEISMIC DATA FROM THE GULF OF MEXICO
Offshore Technology Conference, 2013Co-Authors: R.d. Martinez, Joyce D. Schroeder, Geoffrey A. KingAbstract:Seismic Formation Pressure logs are derived from seismic data in this study. The main objective is to delineate the distribution of overPressured zones in the subsurface, and seismic data from Offshore Louisiana are used to illustrate the proposed approach. The seismic data processing consists of velocity modelling, wavelet processing, and seismic inversion. From the acoustic impedances produced by seismic inversion, seismic velocity and density "logs" are derived at every CDP location using a relationship between sonic velocities and acoustic impedances (AI). Results include profiles of seismic velocity logs, seismic density logs, and seismic Formation Pressure logs for two intersecting seismic lines from Offshore Louisiana. One well is used to constrain the data processing. The seismic Formation Pressure sections delineate a large region of overPressured shales in the subsurface.
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Formation Pressure Prediction With Seismic Data From the Gulf of Mexico
Spe Formation Evaluation, 1991Co-Authors: R.d. Martinez, Joyce D. Schroeder, Geoffrey A. KingAbstract:In this paper, the authors derive seismic Formation-Pressure logs using seismic data from offshore Louisiana to delineate the distribution of overPressured zones in the subsurface. The seismic-data processing consists of velocity modeling, wavelet processing, and seismic inversion. From the acoustic impedances produced by seismic inversion, the authors derive seismic velocity and density logs at every seismic tracer location using a relationship between sonic velocities and acoustic impedances. The authors use these logs to compute the seismic Formation-Pressure logs vs. depth. Formation-Pressure logs are calculated with the assumption that compressional velocity, means density, and depth are proportional to Formation Pressure. These logs are constrained at every depth by estimated matrix and fluid compressional velocities (v{sub max} and v{sub min}). v{sup max} and v{sub min} are derived from porosity and sonic well-log inFormation. Results include profiles of seismic-velocity, seismic-density, and Formation-Pressure logs for two intersecting seismic lines from offshore Louisiana. Log from one well are used to constrain the data processing. The seismic Formation-Pressure sections delineate a large region of overPressured shales in the subsurface.
Zhao Yong - One of the best experts on this subject based on the ideXlab platform.
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Method for Predicting Tertiary Formation Pressure in West Qaidam Basin
Journal of Jianghan Petroleum Institute, 2020Co-Authors: Zhao YongAbstract:In consideration of actual situations of inadequate Formation pore fluid Pressure data, which is used frequently in research in Qaidam basin, prediction of Formation Pressure is carried out in Tertiary strata in the west of the basin, og which the strata are divided into normal compacted zone and uncompacted zone on the basis of sonic logging data Pore fluid Pressure in some of the wells is predicted with regression method by using the principle of equilibrium depth and calculating with different mathematical models The models for predicting Formation Pressure in the region are summarized in different area The result of contrast with known predicting data shows that the effect of prediction is fine
Sinopec Shengli - One of the best experts on this subject based on the ideXlab platform.
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Characteristics of Formation Pressure evolution and impact on petroleum distribution in Weibei Sag
Petroleum Geology & Experiment, 2020Co-Authors: Sinopec ShengliAbstract:Based on measured Pressure and fluid inclusion data,the current Formation Pressure,the paleopre-ssure during petroleum accumulation and the characteristics of Pressure evolution in the Weibei Sag were studied by means of basin modeling technology. At present,the Formation Pressure in the study area can be divided into 2 segments vertically: normal Pressure above 2 300 m and low Pressure below 2 300 m,mainly found in the 2nd member of the Kongdian Formation in the north. The paleoPressure during petroleum accumulation period mainly appeared to be low overPressure. Basin modeling showed that the Formation Pressure in the 2nd member of the Kongdian Formation evolved through 3 levels: "Pressure accumulation-Pressure release-Pressure differentiation". Due to different preservation conditions,the Pressure evolution was divided into 3 patterns: "normal Pressure-over Pressure-low overPressure","normal Pressure-over Pressure-low Pressure",and "normal Pressurelow overPressure-normal Pressure". Since the southeast of the sag was eroded obviously during accumulation, and the Formation Pressure decreased rapidly,this area became the target for petroleum migration.
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Palaeo-Formation Pressure evolution and episodic hydrocarbon accumulation in Tao'erhe Depression,Chezhen Sag
Oil and Gas Geology, 2020Co-Authors: Sinopec ShengliAbstract:In Tao'erhe Depression,abnormally high Pressure is generally developed and its evolution is inherently connected with hydrocarbon generation,migration and accumulation.The various periods of Formation Pressure evolution and the episodic hydrocarbon generation,migration and accumulation can be effectively determined by restoring paleo-Formation Pressures and making a comparison among divisions of thermal evolution stages of organic matter.The flow patterns of Formation fluids are identified in the different periods of Pressure evolution.In Chezhen Sag,there were 2 processes of overPressure accumulation and release during the Formation Pressure evolution,with the microfractures formed during the early overPressure accumulation becoming the main pathway for primary hydrocarbon migration.The secondary pores and microfratures formed during the late overPressure accumulation can serve as the pathway for great secondary hydrocarbon migration and the space for hydrocarbon accumulation.