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Application of Milankovitch cycles in the restoration of highresolution deposition velocity of Neogene strata in Kutei Basin,Indonesia

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Energy Geoscience 2023年第2期4卷 91-99页

作者： Baonian Wu Zhijun Jin international petroleum exploration and production corporation SinopecBeijing100029China exploration and production Research Institute SinopecBeijing100083China

Restoring the deposition velocity during evolution in basin analysis is an important *** restoration of high-resolution deposition velocitydthe deposition velocity over a short geological perioddcan improve the precision of basin analysis and ***,the prerequisite for the restoration is to establish an accurate chronostratigraphic framework based on precise stratigraphic *** methods for stratigraphic dating can only be used to determine the epochs of large stratigraphic intervals rather than accurate geological *** is also difficult to establish a fine geological time scale with dating methods requiring sample testing such as isotopic dating due to their limitations in sample *** contrast,the Milankovich cycle-based dating possesses the advantages of high precision and high operability and can be used to restore high-resolution deposition *** on the identification and extraction of Milankovich cycles,this study restores the high-resolution deposition velocity of the Middle Miocene and later strata in the abyssal area of the Kutei Basin in *** results show that the restored deposition velocity coincides well with lithological *** indicates that the Milankovitch cycle-based dating can be used to effectively restore reliable curves of high-resolution deposition ***,this study provides a methodological basis and data guarantee for studying the accumulation cycles and distribution patterns of oil and gas in the abyssal area of the Kutei Basin using wave analysis technology and can also serve as a reference for similar research in other basins.

关键词： Stratigraphic dating Deposition velocity restoration Milankovitch cycle Kutei basin

production data-based facies analysis for well placement in thinlayered reservoir

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Energy Geoscience 2022年第3期3卷 219-234页

作者： Xuequn Tan Shiwang Chen Taiyuan Hong Yuliang Feng Qiang Ding sinopec petroleum exploration and production Research Institute Beijing100026China sinopec international petroleum exploration and Development corporation Beijing100029China Goldensun petroleum Technologies Inc Beijing100107China

The exploitation of a thin-layered reservoir with thickness less than 5 m(16 ft)needs to rely upon sedimentary facies analysis,due to the low resolution of seismic data and sparse well ***,the ambiguity of facies interpretation creates uncertainty in facies and reservoir *** study aims to better define facies distribution,predict sand-body architecture,and consequently reduce risks in planning development wells,by integrating production data(dynamic)with conceptual geological models(static).An example is shown from the M1 Member of the Napo Formation in the B and G Oilfields(Block J),Oriente Basin,*** M1 reservoir is a thin-layered sandstone reservoir below seismic *** and well-log facies interpretation indicates depositional facies of a tidedominated *** data during the water injection phase of field development can delineate the detailed geometry of the sand *** injector-producer rate responses can determine the connectivity of sand *** performance during primary recovery can capture the scale of single reservoirs because the initial production rates and the cumulative oil production of individual wells are generally proportional to the size of sand bodies.A facies model was thereby *** step-out wells were planned using this model and drilled *** results demonstrate that the integration of dynamic and static data is critical to understanding reservoir facies distribution.

关键词： Tide-dominated estuary Well-log facies Sand-body connectivity Well performance Oriente Basin

Lacustrine shale oiliness influenced by diabase intrusions in the Paleogene Funing Formation,Subei Basin,China

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petroleum Science 2023年第5期20卷 2683-2694页

作者： Biao Sun Xiao-Ping Liu Jie Liu Qi-Dong Liu Hong-Liang Duan Shi-Li Liu Ming Guan Tian Liu Zu-Xian Hua Kai Sheng Yu-Jie Xing State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China international petroleum exploration and production corporation SINOPECBeijing100029China Research Institute of exploration and Development SINOPEC Jiangsu Oilfield CompanyJiangsu225009China

The research on the correlation between hydrocarbon accumulations and magmatic activities has always attracted aroused much wide *** research has primarily the hydrocarbon generations capability of source rocks and the quality of reservoirs by diabase ***,rare systematic research has been conducted on the oiliness and enrichment *** be specific,the diabase intrusive zone,the contact metamorphic zone and the normal shale zone of the Funing Formation in the Gaoyou Sag,Subei Basin were taken as the object of this ***,in this study,the hydrocarbon generation quality,reservoir quality,and oil-bearing quality of diabase-metamorphic zone-normal shale were evaluated using X-ray diffractions,argon ion polishing-field emission scanning electron microscope,energy spectrum,rock slice/light-sheet microscopic observations,organic geochemical tests,N_(2) gas adsorption and 2D NMR *** results indicated that the intrusive zone,the metamorphic zone,and the normal zone were formed in order by the degree of effect of diabase ***,the oil content of different parts exhibited significant heterogeneity due to the baking effect of diabase,and the metamorphic zone had the significantly better oil-bearing nature than the intrusive ***,a distribution model was proposed for the diabase intrusive zone-metamorphic zone-normal surrounding rock zone.

关键词： Shale reservoirs Diabase intrusion Oiliness Funing formation

Iterative Learning Control Algorithm with a Fixed Step

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Chinese Journal of Mechanical Engineering 2011年第4期24卷 669-675页

作者： WANG Yan NIU Jianjun School of Transportation Science and Engineering Beihang University Beijing 100191 China international petroleum exploration and production corporation China Petroleum ＆ Chemical Corporation Beijing 100083 China

Iterative Learning Control （ILC） captures interests of many scholars because of its capability of high precision control implement without identifying plant mathematical models, and it is widely applied in control engineering. Presently, most ILC algorithms still follow the original ideas of ARIMOTO, in which the iterative-learning-rate is composed by the control error with its derivative and integral values. This kind of algorithms will result in inevitable problems such as huge computation, big storage capacity for algorithm data, and also weak robust. In order to resolve these problems, an improved iterative learning control algorithm with fixed step is proposed here which breaks the primary thought of ARIMOTO. In this algorithm, the control step is set only according to the value of the control error, which could enormously reduce the computation and storage size demanded, also improve the robust of the algorithm by not using the differential coefficient of the iterative learning error. In this paper, the convergence conditions of this proposed fixed step iterative learning algorithm is theoretically analyzed and testified. Then the algorithm is tested through simulation researches on a time-variant object with randomly set disturbance through calculation of step threshold value, algorithm robustness testing,and evaluation of the relation between convergence speed and step size. Finally the algorithm is validated on a valve-serving-cylinder system of a joint robot with time-variant parameters. Experiment results demonstrate the stability of the algorithm and also the relationship between step value and convergence rate. Both simulation and experiment testify the feasibility and validity of the new algorithm proposed here. And it is worth to noticing that this algorithm is simple but with strong robust after improvements, which provides new ideas to the research of iterative learning control algorithms.

关键词： iterative learning control fixed step time variant system simulating study robot control

The Formation and Distribution of the Marine Hydrocarbon Source Rock in the Tarim Basin,NW China

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 509-519页

作者： CAI Xiyuan WANG Yi China petroleum and Chemical corporation Beijing 100029 China petroleum exploration and production Research Institute SINOPEC Beijing 100083 China

There are significant differences in type and distribution between marine source rock and continental source rock. According to the iithology, the Cambrian-Ordovician source rock in the Tarim basin is divided into two types： the carbonate source rock and the mud source rock. The two sets of source rocks are developed mainly in three sets of formations, Lower-Middle Cambrian carbonate source rock and mud source rock, Lower-Middle Ordovician mud source rock and Upper Ordovician lime mud source rock. The stratigraphic and areal distributions of the source rocks are controlled by the altitude and the sedimentary facies respectively. The mud source rock is developed in slope-semi deep sea environment. The source rock developed in the slope sedimentary environment is related with the anoxic environment and the one developed in semi deep sea has a close relationship with the up-flowing sea water. The carbonate source rock is developed mainly in platform slope of highstand systems tract and it is usually intimately associated with the salt rock. The Lower-Middle Cambrian carbonate source rock is developed mainly in the Bachu, Tazhong, Tangguzibasi and Yingmaili areas. The Lower-Middle Cambrian mud source rock is mainly developed in the areas east of the line of Kunan 1-Tadong 1. The Lower-Middle Ordovician mud source rock is developed mainly in the east slope of the Manjiaer depression. The carbonate source rock of Early Ordovician is developed mainly in the platform slope of highstand systems tract, such as the south margin of Tabei, the north slope of Tazhong, the Bachu area and Keping area.

关键词： Source rock distribution Marine sequence Tarim basin

Combination and superimposition of source kitchens and their effects on hydrocarbon accumulation in the hinterland of the Junggar Basin,west China

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petroleum Science 2010年第1期7卷 59-72页

作者： Zhang Zhihuan Qin Liming Qiu Nansheng Zhong Ningning Zhang Zhenying Li Wei State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China beijing Institute of Economic Management Hebei 102602 China sinopec international petroleum exploration and production corporation Beijing 100083 China

In the hinterland of the Junggar Basin, there are multiple depressions with multiple sets of source rocks. Therefore, the conditions of hydrocarbon sources are complex, and the geochemical characteristics and sources of hydrocarbon vary in different structural belts. The evolution of the Che- Mo palaeohigh affected the formation of hydrocarbon source kitchens and hydrocarbon migration. We studied the combination and superimposition of hydrocarbon source kitchens, using as an example the hinterland of the Junggar Basin （including the Yongjin, Zhengshacun, Moxizhuang and Luliang uplift areas）. The study was based on geochemical analyses of crude oil and fluid inclusions, and the histories of tectonic evolution and hydrocarbon generation. The results indicated that before the Paleogene there were two hydrocarbon-generating depressions： the Western Well Penl depression and the Changji depression on the south and north sides of the Che-Mo palaeohigh, respectively. The Permian source kitchen had been generating hydrocarbon continuously since Triassic and reached high maturity stage in the Cretaceous period. After Paleogene, the adjustment of the Che-Mo palaeohigh led to the subsidence of the Changji depression and the Jurassic source rocks reached mature stage and became the main source kitchens. However, the Jurassic source rocks in the Western Well Penl depression were still in a low maturity stage and did not generate oil because of the adjustment of tectonic movements. As a result, in the central and southern parts of the Junggar Basin, Jurassic source rocks generated oil, but in the Luliang uplift, the crude oil was from the Permian source rocks in the Western Well Penl depression and the Jurassic source rocks did not contribute. The crude oil in the central Zhengshacun-Moxizhuang belt was from the Permian source rocks in two depressions, and partially from the Jurassic source rocks. The crude oil in the Luliang uplift was from the source rocks of the lower Permian F

关键词： Hinterland of the Junggar Basin hydrocarbon source kitchen oil source combination and superimposition accumulation stage

A mathematical diffusion model of carbon isotopic reversals inside ultra-tight Longmaxi shale matrixes

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petroleum Science 2022年第5期19卷 2014-2026页

作者： Bao-Jian Shen Zhi-Liang He Cheng Tao Jin-Cai Shen Zong-Quan Hu Zhi-Ming Li Yuan-Hao Cao Wei Chen State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development SINOPECBeijing100083China Wuxi petroleum Geology Institute SINOPEC Petroleum Exploration and Production Research InstituteWuxiJiangsu 214126China China petroleum&Chemical corporation Beijing100728China Chongqing Fuling Shale Gas exploration and Development Co. Ltd.SINOPECChongqing408014China petroleum exploration and production Research Institute SINOPECBeijing100083China School of Energy Soochow UniversitySuzhouJiangsu 215006China

Developing mathematical models for high Knudsen number(Kn)flow for isotopic gas fractionation in tight sedimentary rocks is still *** this study,carbon isotopic reversals(δ^(13)C_(1)>δ^(13)C_(2))were found for four Longmaxi shale samples based on gas degassing *** in shale with higher gas content exhibits larger ***,a mathematical model was developed to simulate the carbon isotopic reversals of methane and *** model is based on these hypotheses:(i)diffusion flow is dominating during gas transport process;(ii)diffusion coefficients are nonlinear depending on concentration *** model not only shows a good agreement with isotopic reversals,but also well predicts gas production rates by selecting appropriate exponents m and m^(*) of gas pressure gradient,where m is for ^(12)C and m^(*)is for ^(13)***,the(m−m^(*))value has a positive correlation with fractionation level.(m1−m1^(*))of methane are much higher than that of ***,the predicted carbon isotopic reversal magnitude(δ^(13)C_(1)−δ^(13)C_(2))exhibits a positive relationship with total gas content since gas in shale with higher gas content experiences a more extensive high Kn number diffusion *** a result,our model demonstrates an impressive agreement with the experimental carbon isotopic reversal data.

关键词： Diffusion Isotopic fractionation Carbon isotopic reversal Modeling

Development of unconventional gas and technologies adopted in China

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Energy Geoscience 2020年第1期1卷 55-68页

作者： Yang Li De-Hua Zhou Wei-Hong Wang Ting-Xue Jiang Zhao-Jie Xue China petroleum&Chemical corporation Beijing100728China sinopec exploration&production Research Institute Beijing100083China sinopec Research Institute of petroleum Engineering Beijing100101China

This study analyses the geological characteristics and development progress of unconventional gas in China,summarizes the development theories and technologies,discusses the prospects and challenges of unconventional gas development,and puts forward the future trends of development *** technologies of unconventional gas development are available in *** gas development technologies include comprehensive geological evaluation,volume fracturing of cluster horizontal wells under complex stress conditions,and factory-like operation of horizontal wells in complex mountainous area et *** gas development technologies include fluid identification and quantitative prediction,optimization of well patterns,multi-layer fracturing in vertical well,staged fracturing in horizontal well,and drainage gas *** methane(CBM)development technologies include the prediction of medium-high-and medium-low-rank CBM enrichment areas,rate-variable hydraulic fracturing,and quantitative drainage recovery with five stages,three pressures,and four *** economic and effective development of unconventional gas,further efforts should be ***,intensified studies should be conducted on high-precision prediction and fine characterization technologies of high-quality shale reservoirs in deep marine,continental,and transitional ***,key theories and technologies such as fast drilling and completion of wells with long laterals as well as large-scale volume fracturing should be developed to improve well ***,new technologies such as multiple well-type development,fluid injection,and nano-flooding should be developed to enhance the ***,effort should be made to identify the accumulation mechanism and large-scale effective development technologies for ***,the application of large amounts of data and artificial intelligence in the entire process of unconventional gas development should be considered to reduce the dev

关键词： Unconventional gas Geologic characteristics Development history Integrated development technology

Technological advancement and industrialization path of sinopec in carbon capture,utilization and storage,China

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Energy Geoscience 2024年第1期5卷 204-211页

作者： Yang Li Rui Wang Qingmin Zhao Zhaojie Xue China petroleum&Chemical corporation Beijing100728China sinopec exploration&production Research Institute Beijing100083China

Carbon capture,utilization and storage(CCUS)technology is an important means to effectively reduce carbon emissions from fossil energy combustion and industrial *** the crisis of climate change,CCUS has attracted increasing attention in the *** technology as developed rapidly in China is technically feasible for large-scale application in various *** R&D and demonstration of CCUS in China petroleum&Chemical corporation(sinopec)are summarized,including carbon capture,carbon transport,CO_(2)enhanced energy recovery(including oil,gas,and water,etc.),and comprehensive utilization of CO_(2).Based on the source-sink matching characteristics in China,two CCUS industrialization scenarios are proposed,namely,CO_(2)-EOR,CO_(2)-driven enhanced oil recovery using centralized carbon sinks in East China and CO_(2)-EWR,CO_(2)-driven enhanced water recovery(EWR)using centralized carbon sources from the coal chemical industry in West ***,a CCUS industrialization path from sinopec's perspective is suggested,using CO_(2)-EOR as the major means and CO_(2)-EWR,CO_(2)-driven enhanced gas recovery(CO_(2)-EGR)and other utilization methods as important supplementary means.

关键词： Carbon capture Transport Enhanced energy recovery Comprehensive utilization Industrialization path