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Analysis on forming conditions of deep marine reservoirs and their concentration belts in superimposed basins in china

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Science Bulletin 2007年第S1期 12-27页

作者： ZHAO WenZhi, WANG ZeCheng, ZHANG ShuiChang & WANG HongJun research institute of petroleum exploration and Development, Petrochina, beijing 100083, china

By taking the Tarim Basin, Sichuan Basin and Ordos Basin as examples, the conditions for deep marine reservoir formation were illustrated in three aspects listed below: late-stage superimposition style, burial history and structural deformation of the marine stratigraphic system. The burial history of marine source rocks can be divided into three types, i.e., type I, type II and type III, which are obviously different from the case with present hydrocarbon phases in terms of hydrocarbon generation and petroleum-reservoir formation. Based on evolution history, the structural belts in the marine stratigraphic sequence can also be divided into four types, i.e. earlier normal fault-later fault-fold type, earlier uplift-later fault-fold type, earlier uplift-later flattened slope type, and earlier depression-later thrust type. In this paper, a successive gas generation model was proposed, and it was particularly pointed out that coupling of geothermal field annealing evolution and tectonic subsidence and late gas generation from dispersed liquid hydrocarbon in highly matured to over-matured source rocks are key factors for formation of marine petroleum reservoirs. The geological conditions for formation of high-grade reservoirs in deep marine system, covering early hydrocarbon injection, deep denudation and buried dolomitization, were summarized. It was finally concluded that three major structural belts, i.e. paleo-uplift belt characterized by composite hydrocarbon accumulation, paleo-fault belt and high-energy sedimentary facies belt, were involved in marine hydrocarbon accumulation.

关键词： superposition basin marine formation deep zone dispersed liquid hydrocarbon geothermal field structural deformation

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鄂尔多斯盆地庆阳以南三叠系延长组长_5、长_6、长_7储层成岩作用

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天然气工业 2001年第2期21卷 13-17页

作者：牟泽辉中石化石油勘探开发研究院荆州新区勘探研究所

三叠系延长组长5、长6、长7为区内主要油气勘探目的层 ,它们的储层主要经历了溶蚀作用、白云石化作用、破裂作用、沸石化作用、压实作用和胶结作用等一系列成岩作用 ,成岩作用复杂 ,成岩现象十分丰富 ,且特征明显。成岩作用研究表明 ,... 详细信息

三叠系延长组长5、长6、长7为区内主要油气勘探目的层 ,它们的储层主要经历了溶蚀作用、白云石化作用、破裂作用、沸石化作用、压实作用和胶结作用等一系列成岩作用 ,成岩作用复杂 ,成岩现象十分丰富 ,且特征明显。成岩作用研究表明 ,溶蚀作用、白云石化作用、破裂作用、沸石化作用是有利于区内孔隙发育的成岩作用 ,而压实作用和胶结作用则是使储层物性变差、孔隙度降低的两个重要成岩作用。可将延长组储层分为持续埋藏型成岩系统和中间开启型成岩系统 ,区内井深 130 0～ 15 0 0m和 170 0～ 190 0m为次生孔隙发育段 ,且物性条件和孔隙结构受控于沉积环境和成岩作用。

关键词：延长组鄂尔多斯盆地成岩作用成岩模式储层油气藏

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Detection of water in petroleum inclusions and its implications

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Science Bulletin 2006年第12期51卷 1501-1507页

作者： CAO Jian1, YAO Suping1, HU Wenxuan1, ZHANG Yijie2, WANG Xulong3, ZHANG Yueqian3 & TANG Yong3 1. State Key Laboratory for Mineral Deposit research, Department of Earth Sciences, Nanjing University, Nanjing 210093, china 2. research institute of exploration and Development, Petrochina, Bei- jing 100083, china 3. research institute of exploration and Development, Xinjiang Oilfield Company, Petrochina, Karamay 834000, china State Key Laboratory for Mineral Deposit research Department of Earth Sciences Nanjing University Nanjing 210093 China research institute of exploration and Development PetroChina Beijing 100083 China research institute of exploration and Development Xinjiang Oilfield Company PetroChina Karamay 834000 China

FTIR spectra of inclusions sampled from fault-zone reservoirs of the northwestern Junggar Basin show that water, with different abundances, does exist in petroleum inclusions. It is thus implied that petroleum inclusions can seldom form without water. Different inclusions hosted in one single grain, and formed in one oil charging phase, have a largely varied ratio of water to oil and slightly changed CH3/CH2 ratio. This likely provides evidence for fault-related episodic migration and accumulation of hydrocarbons.

关键词： water in petroleum inclusions forming mechanism of inclusions episodic migration and accumulation of hydrocarbons FTIR microspectroscopy Junggar Basin.

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Multiphase tectonic movements, cap formations and evolution of the Majiang paleo-reservoir

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petroleum Science 2011年第2期8卷 127-133页

作者： Tang Liangjie Cui Min State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China CNOOC research institute Beijing 100027 China

The Majiang paleo-reservoir is a typical destroyed hydrocarbon reservoir, buried in carbonate strata of china＇s southern marine-facies. Field geological explorations, interpretations of seismic profiles and balanced cross-section restorations around this paleo-reservoir reveal that its formation and evolution have been restricted by multiphase tectonic movements of different intensities. A regional tectonic mechanism and model have been suggested for the formation and evolution of the Majiang paleo- reservoir. Geological field exploration has been carried out along three typical Silurian cross-sections and rock samples were tested in combination with water-rock interaction. Based on the result of cap tests, the planar distribution, the residual thickness, the erosion thickness and the preservation conditions, the Silurian mudstone cap is discussed around the Majiang paleo-reservoir. Combining the hydrodynamic conditions of its formation and evolution and its tectonic movements, we determined the fact that the thicker the cap is, the more resistant it is to hydrodynamic destruction. The multi-phase formation and destructive geological model of the paleo-reservoir is established through an overall analysis of multi- phase tectonic evolutions, cap developments, hydrodynamic conditions and solid mineral metallogenic ages measured by Rb-Sr, Pb and Sm-Nd isotope techniques.

关键词： Multiphase tectonic evolution key tectonic changes cap evolution hydrocarbonpreservation Majiang paleo-reservoir

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给定井眼方向的修正轨道设计方法

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石油学报 2002年第2期23卷 74-76页

作者：刘修善石在虹中国石化勘探开发研究院北京100083 中国科学院力学研究所北京100080

在定向钻进过程中 ,井眼方向及其变化规律是井眼轨道监测与控制的关键参数。修正轨道设计作为井眼轨道监控的重要组成部分 ,对修正设计目标点的井眼方向往往有一定的要求。根据定向钻井工艺技术的特点 ,本文构造出了具有两个圆弧段和一... 详细信息

在定向钻进过程中 ,井眼方向及其变化规律是井眼轨道监测与控制的关键参数。修正轨道设计作为井眼轨道监控的重要组成部分 ,对修正设计目标点的井眼方向往往有一定的要求。根据定向钻井工艺技术的特点 ,本文构造出了具有两个圆弧段和一个直线段的三段式剖面 ,从而解决了给定井眼方向条件下的修正轨道设计问题 ,为井眼轨道的有效监控奠定了基础。本文的设计方法避开了求解约束方程组 ,使得求解过程是一致收敛的 ,并且所有计算公式在理论上都是精确解 ,因此其普适性、精确性、稳定性和收敛性得到了保证 ,可广泛应用于定向井、水平井、大位移井、多目标井的修正轨道设计。

关键词：石油钻井理论数学模型井眼轨道设计计算定向井水平井大位移井多目标井

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COMPOSITION CHARACTERISTICS AND ORIGIN OF CARBON ISOTOPE OF LIUHUANGTANG NATURAL GAS IN TENGCHONG COUNTY, YUNNAN PROVINCE

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Chinese Science Bulletin 1989年第12期34卷 1027-1030页

作者：戴金星 Scientific research institute of petroleum exploration and Deuelopment Beijing

Tengchong County is a well-known volcanic geothermal area in china, where there are frequent volcanic activities of the Quaternary creating favourable conditions for the migration of natural gas of inorganic origin fr... 详细信息

关键词： natural gas of inorganic origin carbon isotope Liuhuangtang in Tengchong County.

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鄂尔多斯盆地三叠系延长组页岩气形成条件及有利发育区预测

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天然气地球科学 2009年第3期20卷 460-465页

作者：徐士林包书景中国石油化工股份有限公司石油勘探开发研究院北京100083

页岩气勘探开发始于美国,并且取得较好的地质效果和经济效益。页岩气是一种非常规天然气,以吸附或游离状态为主要存在方式,表现为典型的"原地"成藏模式,其成藏受泥页岩厚度、分布、有机地球化学特征、孔隙度和渗透率条件、裂缝发育程度... 详细信息

页岩气勘探开发始于美国,并且取得较好的地质效果和经济效益。页岩气是一种非常规天然气,以吸附或游离状态为主要存在方式,表现为典型的"原地"成藏模式,其成藏受泥页岩厚度、分布、有机地球化学特征、孔隙度和渗透率条件、裂缝发育程度、盖层条件等的综合控制。鄂尔多斯盆地三叠系延长组泥页岩分布广泛,并且泥页岩厚度较大、有机碳含量较高、热演化适中、气测显示活跃、页岩中裂缝发育,页岩气资源潜力较大。初步研究表明鄂尔多斯盆地南部地区是三叠系延长组页岩气发育的有利区域,其中定边—华池—富县的"L"型区域是最有利发育区,向外围泥页岩气的潜力逐渐变小。

关键词：页岩气鄂尔多斯盆地资源潜力有利发育区

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Hydrocarbon test in lower-layer atmosphere to predict deep-sea petroleum or hydrate in the Okinawa Trough: an example

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Acta Oceanologica Sinica 2003年第4期22卷 569-576页

作者： Gong Jianming1, Chen Jianwen 1, 2, Li Gang1, Zhang Xunhua1, Li Jipeng3, Huang Fulin1 1. Qingdao institute of Marine Geology, Qingdao 266071, china. 2. Ocean University of china, Qingdao 266003, china 3. Hefei institute of petroleum Chemical exploration, china petroleum exploration and Development research institute, Hefei 230022,china Qingdao Inst Marine Geol Qingdao 266071 Peoples R China Ocean Univ china Qingdao 266003 Peoples R China china Petr Explorat & Dev Res Inst Hefei Inst Petr Chem Explorat Hefei 230022 Peoples R China

Light hydrocarbon (methane, ethane, propane, butane and CO2) test and C isotopic analysis of CO are conducted for over 100 lower-layer atmospheric samples from the East china Sea slope and the Okinawa Trough. The results show that the lower-layer atmosphere mainly consists of CO2 and then of CH4, and the CO2 concentrations are calculated to have a high average value of 0.87 omega/10(-2) about three times that of the regional background (0-3 omega/10(-2)). The result also shows that the average value of C isotope - 20.8 x 10(-3) is given to the CO2, inferring that it is inorganic gas. Thus, for the future 's work in the Okinawa Trough, special attention should be paid to CO2 hydrate, which is very possibly an important hydrate type.

关键词： lower-layer atmosphere hydrocarbon test C isotopic analysis deep-sea petroleum gas hydrate

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Discussion on marine source rocks thermal evolvement patterns in the Tarim Basin and Sichuan Basin,west china

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Science Bulletin 2007年第S1期 141-149页

作者： ZHANG Bin, ZHAO Zhe, ZHANG ShuiChang & CHEN JianPing Central Laboratory of petroleum Geology research, research institute of petroleum exploration and Development, Petrochina, beijing 100083, china

Taking marine source rocks of lower Paleozoic in the Tarim Basin and Paleozoic ones in the Sichuan Basin as examples, their sedimentation process could be classified into four styles: continuous subsidence with deep sedimentation in early stage, continuous subsidence with deep sedimentation in later stage, that deeply buried-uplift-shallowly buried, and that shallowly buried-uplift-deeply buried. Unlike that in East china, the marine source rocks evolvement patterns did not accord with sedimentation styles one by one in superimposed basins in west china. Taking local geothermal field into account, four types of source rock evolvement patterns were built: that evolved fast in early stage, evolved fast in middle stage, evolved continuously and evolved in multistage. Among them, the 1st pattern contributed little to the present industrial oil pools directly, but paleo-oil reservoirs and gases cracked from crude oils were main exploration targets. Although some gases were found in the 2nd pattern, the scale was not big enough. For the 3rd and 4th patterns, the hydrocarbon potential depended on organic matters maturity in early stage. For relatively low mature rocks, it was possible to generate some oils in later stage; otherwise the main products were gases. Paleo-oil reservoirs remained fairly well in the Sichuan Basin, and most source rocks underwent kerogen-oil-gas processes, which was useful reference to gas exploration in the Tarim Basin.

关键词： thermal evolvement patterns marine source rocks hydrocarbon potential sedimentary style superimposed basins

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川西坳陷异常高压形成机理与天然气分布关系研究

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天然气工业 2004年第3期24卷 5-8页

作者：汪时成张金川贾庆素北京石油大学北京中国地质大学中石化勘探开发研究院

对川西坳陷异常地层压力的研究一直存在不同观点 ,本文认为 ,高异常地层压力的形成机理具有 3种基本类型 ,即单相流的异常地层压力 (时间变化的函数 )、常规圈闭条件下两相流的异常地层压力 (与时间变化无关但其分布具有局限性 )以及致... 详细信息

对川西坳陷异常地层压力的研究一直存在不同观点 ,本文认为 ,高异常地层压力的形成机理具有 3种基本类型 ,即单相流的异常地层压力 (时间变化的函数 )、常规圈闭条件下两相流的异常地层压力 (与时间变化无关但其分布具有局限性 )以及致密储层条件下两相流的异常地层压力 (与时间因素无关且表现为区域性特点 )。川西坳陷三叠系和侏罗系地层严重致密化 ,生烃过程对地层增压作用具有重要影响 ,现今异常地层压力的形成主要取决于流体在储层孔隙中的流动方式以及由此所产生的能量交换 ,取决于致密储层条件对已形成高异常地层压力的封闭保存过程 ,因此川西坳陷现今异常地层压力的形成在原始动力类型上具有多因素复合性 ,研究表明 ,异常地层压力分布与天然气聚集之间具有复杂关系。

关键词：异常地层压力高压成因机理天然气分布川西坳陷地层压力分布

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