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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

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双曲线递减的简化及确定可采储量的截距法

天然气工业 1994年第4期14卷 32-37页

作者：陈元千中国石油天然气总公司石油勘探开发科学研究院

双曲线递减对于产量预测是一个非常有用的方法。Ａｒｐｓ（阿浦斯）的产量递减分析法，在油气藏工程计算中得到了广泛的应用，当根据递减阶段的实际数据判定递减类型之后，可建立相应的相关公式，并对油气藏或油气井的未来产量、累积产... 详细信息

双曲线递减对于产量预测是一个非常有用的方法。Ａｒｐｓ（阿浦斯）的产量递减分析法，在油气藏工程计算中得到了广泛的应用，当根据递减阶段的实际数据判定递减类型之后，可建立相应的相关公式，并对油气藏或油气井的未来产量、累积产量能够进行有效的预测。文章对Ａｒｐｓ的双曲线递减给予简化，得到了一个累积产量和产量变化关系的通式，当取递减指数ｎ＝０和０．５时，可分别得到指数递减和修正的卡彼托夫递减的累积产量和产量的关系式。同时提出了利用不同ｎ值的直线截距法，确定油气藏（田）递减阶段的最大累积产量和可采储量。

关键词：双曲线递减储量截距法油气田

对我国石油科技期刊出版工作中苦干标准化问题的讨论

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天然气工业 1995年第4期15卷 73-79页

作者：陈元千中国石油天然气总公司石油勘探开发科学研究院

对我国石油科技期刊出版工作中苦干标准化问题的讨论陈元千（中国石油天然气总公司石油勘探开发科学研究院）【编者按】陈元千教授撰写的这篇讨论性文章，对我国石油科技期刊出版工作中的若干问题提出了许多宝贵的意见和建议，值得认真... 详细信息

对我国石油科技期刊出版工作中苦干标准化问题的讨论陈元千（中国石油天然气总公司石油勘探开发科学研究院）【编者按】陈元千教授撰写的这篇讨论性文章，对我国石油科技期刊出版工作中的若干问题提出了许多宝贵的意见和建议，值得认真一读。同时我们也欢迎大家能参与这一...

关键词：科技期刊出版标准化石油专业中国

Discussion of gas enrichment mechanism and natural gas origin in marine sedimentary basin,china

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Science Bulletin 2007年第S1期 62-76页

作者： ZHU GuangYou, ZHAO WenZhi, ZHANG ShuiChang, LIANG YingBo & WANG ZhengJun research Center of petroleum Geology, research institute of petroleum exploration and development, Petrochina, beijing 100083, china

There are abundant natural gas resources in Chinese marine sedimentary basin. The exploration hot shots of natural gas are the Palaeozoic marine strata here in recent years, and several large scale gas fields have been discovered. Chinese Palaeozoic high-post matured and coal measure hydrocarbon source rocks are mainly prone to gas generation in the present. This research considered that gas source rocks and TSR are the key cause of gas enrichment of marine strata. High-quality argillaceous and coal measure hydrocarbon rocks are distributed widely in the Palaeozoic marine strata, which have been in highly matured phase in the present. The argillaceous source rock generally contains various sulfates that could accelerate crude oil cracking to gas for TSR occurrence, and coal measure source rock mainly generates gas, so Chinese marine basin gives priority to accumulating gas. Marine strata have not founded oil reservoirs in the Sichuan Basin and Ordos Basin, and they consist mainly of dry gas. Marine natural gases are the mixed gases of oil cracking gas and coal-formed gas in a general way, oil cracking gases contain usually some H2S and CO2. Hydrocarbon carbon isotopes are very complicated, and methane and ethane isotopic values bear apparent reversal caused by thermal evolution and mixing among different genetic types of natural gas. Coal-formed gases are the main component of Chinese marine natural gas. The Upper Permian of the Sichuan Basin and the Carboniferous-Permian of the Ordos Basin coal measure hydrocarbon source rock present large hydrocarbon generation potential, which are the prospecting highlight of marine natural gas hereafter. Oil cracking gas exploration will be paid much attention to in the Tarim Basin because of the lack of coal measure hydrocarbon source rock.

关键词： marine facies Palaeozoic carbonate rock genetic type gas source carbon isotope hydrogen sulfide (H2S)

Reliability analysis of in-situ stress measurement using circumferential velocity anisotropy

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Journal of Rock Mechanics and Geotechnical Engineering 2011年第S1期3卷 457-460页

作者： Jiandong Liu1, 2, Luhe Shen1, 2, Juan Jin1, 2 1 Key Laboratory of Oil and Gas Reservoirs, china national petroleum corporation, beijing, 100083, china 2 Petrochina research institute of petroleum exploration and development, beijing, 100083, china Key Laboratory of Oil and Gas Reservoirs China National Petroleum Corporation Beijing 100083 China Petrochina research institute of petroleum exploration and development Beijing 100083 China

In-situ stress measurement for deep reservoir formation is difficult in terms of security, reliability and technique. Acoustic velocity anisotropy test is a basic method for stress measurement of rock cores, which is based on the distribution of acoustic velocity in different directions around rock cores. The heterogeneity of core samples, such as fractures and gravel contained, can also lead to wave velocity anisotropy. Therefore, the corresponding reliability evaluation method is established to exclude some other anisotropy factors caused by non-tectonic stresses. In this paper, the reliability of testing results is evaluated from three aspects, i.e. phase difference, anisotropy index and waveform, to remove the factors caused by non-tectonic stresses.

关键词： acoustic velocity measurement wave velocity anisotropy in-situ stress measurement

A special intermediate-low temperature PGE-As-Co mineralization

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Chinese Science Bulletin 1999年第S2期44卷 42-44页

作者： WANG Jingbin, WANG Yuwang and WANG Lijuan beijing institute of Geology for Mineral Resources, china national Nonferrous Metal Industry corporation, beijing 100012 china research Center of Mineral Resources exploration, Chinese Academy of Sciences, beijing 100101, china

THIS paper introduces a new type of platinum-group elements (PGE) mineralization formed under a special condition of intermediate to low temperature, i. e. Huanggang PGE-As-Co deposit related to cryptoex-plosive hornblendite, Inner Mongolia, of which the proven reserves of arsenic reached small size. 1 Geology of mineral district Huanggang PGE-As-Co deposit, located at the margin of Huanggang Mesozoic volcanic basin in thesouthern part of Da Hinggan Range, was controlled by both Huanggang-Ganzhuermiao deep fracture andvolcanic apparatus. The volcanic apparatus in a protruding cupola land-form is about 0.25 km^2. It wasfilled with rhyolitic volcanic breccia, brecciated tuff, subvolcanic dacite porphyry and brecciated lava ofvolcanic neck facies. The host hornblendite, of which Rb-Sr isochron age (bulk rock) is (90.66 ±14.44) Ma, intruded into the apparatus in the form of irregular dike (figure 1).

关键词： intermediate-low temperature PGE-As-Co mineralization Inner Mongolia.

Depositional characteristics and petroleum geological significance of wetland

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petroleum Science 2009年第4期6卷 347-353页

作者： Jin Zhenkui Gu Junfeng Su Nina Wang Zhaofeng Huang Xiaoping State Key Laboratory of Hydrocarbon Resources and exploration China University of PetroleumBeijing 102249China research institute of petroleum exploration and development Xinjiang Oilfield CompanyPetroChinaKaramayXinjiang 834000China

Wetland is a new type of sedimentary facies proposed for the first time in this paper. It is a type of sedimentary environment, transitional between land facies and water (sea or lake) facies. In this paper, wetland is redefined as “a type of sedimentary environments whose ground surface is flat and wet throughout the year, which may be covered with very shallow water (less than 2 m deep), and is covered with lush plant growth”. Wetland is reclassified into two types, swamp wetland (swamp in brief) and wet plain wetland (wet plain in brief). Swamp deposits are coal, while wet plain deposits are dark colored mudstones or silty mudstones rich in plant fossils and carbon debris. The deposits of wet plain are different from those of lake and floodplain in the abundance of plant fossils, color, resistivity well logging curve, and other sedimentary characteristics. In boreholes, resistivity logging can be used to distinguish between wet plain mudstones and lake mudstones. Understanding the sedimentary characteristics of wet plain wetland can help to identify wet plain deposits which were formerly classified as floodplain or lake deposits. This will help to reconstruct the palaeogeography and to understand the history of basin and climate evolution accurately, and is especially important in evaluation of the hydrocarbon generating potential of a basin. With the Jurassic Sangonghe Formation of the Yanqi Basin as an example, the identification characteristics of wetland are described.

关键词： Wetland wet plain Yanqi Basin Sangonghe Formation of Jurassic braided river delta

developmental modes of the Neoproterozoic-Lower Paleozoic marine hydrocarbon source rocks in china

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Science Bulletin 2007年第S1期 77-91页

作者： ZHANG BaoMin1, ZHANG ShuiChang1, BIAN LiZeng2, JIN ZhiJun3 & WANG DaRui1 1 research Center of petroleum Geology in research institute of petroleum exploration and development, Petrochina, beijing 100083, china 2 Department of Earth Sciences, Nanjing University, Nanjing 210093, china 3 research institute of petroleum exploration and development, Sinopec, beijing 100083, china

Based on the researches on rock type, the mode of occurrence, diagnostic minerals and creatures, the sedimentary geochemistry and organic facies of Chinese marine source rocks from wells and outcrops, and on the research findings of developmental modes of foreign marine source rock, the authors consider that it is impossible to objectively make clear the formation mechanism of hydrocarbon source rock with high organic matter abundance by either single mode of preservation or high organic matter productivity. According to the Chinese geological features, the formation mechanism of the Neoproterozoic-Lower Paleozoic marine source rock is generalized into four modes, namely, thermal water activity-upwelling flow-anoxic; carbonate gentle slope-upwelling flow; xerothermic climate-brine euxinic milieu; and humid climate-retained euxinic milieu; as the Lower Cambrian undercompensation basin organic facies (the Tarim Basin, South china and southwestern margin of North china), carbonate gentle lime mud bound organic facies (the Upper Ordovician in Tazhong region of the Tarim Basin and the Lower Silurian in the Upper Yangtze Platform), the Middle Cambrian evaporation laggon organic facies (the Tarim Basin and the Upper Yangtze Platform), enclosed undercompensation terrigenous bay organic facies (the Middle-Upper Ordovician in the west of the Tarim Basin, the Lower Silurian Longmaxi Formation in the Upper Yangtze platform). Chinese marine sedimentations with lower organic matter abundance are generalized into two modes of consumption-dilution mode of open epicontinental sea and depletion-dilution mode of supercompensation basin.

关键词： marine source rock upwelling flow anoxic event thermal water activity xerothermic climate-brine euxinic humid climate-retained euxinic

Effect of stress sensitivity on displacement efficiency in CO_2 flooding for fractured low permeability reservoirs

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petroleum Science 2009年第3期6卷 277-283页

作者： Wang Rui Yue Xiang＇an Zhao Renbao Yan Pingxiang Dave Freeman Key Laboratory of petroleum Engineering Ministry of Education China University of Petroleum Beijing 102249 China SINOPEC exploration ＆ Production research institute Beijing 100083 China china Power Complete Equipment Co. Ltd. Beijing 100011 China Edwy R. Brown Department of petroleum Engineering Marietta College U.S.A.

Carbon dioxide flooding is an effective means of enhanced oil recovery for low permeability reservoirs. If fractures are present in the reservoir, CO2 may flow along the fractures, resulting in low gas displacement efficiency. Reservoir pore pressure will fluctuate to some extent during a CO2 flood, causing a change in effective confining pressure. The result is rock deformation and a reduction in permeability with the reduction in fracture permeability, causing increased flow resistance in the fracture space. Simultaneously, gas cross flowing along the fractures is partially restrained. In this work, the effect of stress changes on permeability was studied through a series of flow experiments. The change in the flowrate distribution in a matrix block and contained fracture with an increase in effective pressure were analyzed. The results lead to an implicit comparison which shows that permeability of fractured core decreases sharply with an increase in effective confining pressure. The fracture flowrate ratio declines and the matrix flowrate ratio increases. Fracture flow will partially divert to the matrix block with the increase in effective confining pressure, improving gas displacement efficiency.

关键词： Stress sensitivity flowrate distribution matrix fracture CO2 flooding displacement efficiency