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Natural gas geochemistry and its origins in Kuqa depression

Science china Earth Sciences 2008年第S1期51卷 174-182页

作者： LIU QuanYou 1 ,QIN ShengFei 1 ,LI Jian 2 ,LIU WenHui 3 ,ZHANG DianWei 3 ,ZHOU QingHua 1 &HU AnPing 1 1 research institute of Petroleum exploration and Development,Petrochina,beijing 100083,china 2 Langfang Branch of research institute of Petroleum exploration and Development,Petrochina,Langfang 065007,china 3 exploration and production research institute,sinopec,beijing 100083,china research institute of Petroleum exploration and Development PetroChina Beijing China Langfang Branch of research institute of Petroleum exploration and Development PetroChina Langfang China exploration and production research institute SINOPEC Beijing China

According to gas compositional and carbon isotopic measurement of 114 gas samples from the Kuqa depression,accumulation of the natural gases in the depression is dominated by hydrocarbon gases, with high gas dryness(C1/C1-4)at the middle and northern parts of the depression and low one towards east and west sides and southern *** carbon isotopes of methane and its homologues are relatively enriched in 13 C,and the distributive range ofδ13C 1 ,δ13C 2 andδ13C 3 is-32‰―-36‰,-22‰―-24‰and-20‰―-22‰,*** general,the carbon isotopes of gaseous alkanes become less negative with the increase of carbon ***δ13C CO2 value is less than-10‰in the Kuqa depression,indicating its organogenic *** distributive range of 3 He/ 4 He ratio is within n×10-8 and a decrease in 3 He/ 4 He ratio from north to south in the depression is *** on the geochemical parameters of natural gas above,natural gas in the Kuqa depression is of characteristics of coal-type gas *** possible reasons for the partial reversal of stable carbon isotopes of gaseous alkanes involve the mixing of gases from one common source rock with different thermal maturity or from two separated source rock intervals of similar kerogen type,multistages accumulation of natural gas under high-temperature and over-pressure conditions,and sufficiency and diffusion of natural gas.

关键词： Kuqa depression natural gas stable carbon isotope gas origin

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Propagation characteristics of converted refracted wave and its application in static correction of converted wave

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Science china Earth Sciences 2008年第S2期51卷 226-232页

作者： LIU Yang1,2 & WEI XiuCheng3 1 State Key Laboratory of Petroleum Resource and Prospecting,china University of Petroleum,beijing 102249,china 2 CNPC Geophysical exploration Key Laboratory,china University of Petroleum,beijing 102249,china 3 exploration and production research institute,sinopec,beijing 100083,china State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing China CNPC Geophysical exploration Key Laboratory China University of Petroleum Beijing China exploration and production research institute SINOPEC Beijing China

Three-component seismic exploration through P-wave source and three-component geophone is an effective technique used in complicated reservoir exploration. In three-component seismic exploration data processing,one of the difficulties is static correction of converted wave. This paper analyzes propagation characteristics of non-converted and converted refracted waves,and discovers a favor-able condition for the formation of converted refracted wave,i.e. the velocity of overlaying medium S wave is much lower than that of underlying medium S wave. In addition,the paper proposes the static correction method of converted wave based on PPS converted refracted wave,and processes the real three-component seismic data with better results of static correction of converted wave.

关键词： PPS converted refracted wave converted wave static correction

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东辛油田东南部油藏描述及滚动勘探目标选择

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石油学报 2004年第2期25卷 36-40页

作者：张煜陈恭洋史文东张永贵中石化胜利油田公司山东东营257094 长江大学地球科学学院湖北荆州434023 中石化勘探开发研究院北京100083

通过高分辨率层序地层划分与对比、全三维地震资料构造解释与微构造分析、测井地震约束波阻抗反演、地震资料油气预测等配套新技术的综合应用 ,重新建立了东辛油田东南部地区的油藏地质模型。在对成藏规律认识的基础上 ,提出了工区构... 详细信息

通过高分辨率层序地层划分与对比、全三维地震资料构造解释与微构造分析、测井地震约束波阻抗反演、地震资料油气预测等配套新技术的综合应用 ,重新建立了东辛油田东南部地区的油藏地质模型。在对成藏规律认识的基础上 ,提出了工区构造油藏和岩性油藏两类共 7个滚动勘探目标。前者主要为沙三中以下目的层 ;后者为微构造或斜坡背景下的岩性尖灭型圈闭。

关键词：油藏描述滚动勘探目标选择东辛油田

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Palaeogeothermal response and record of the effusing of Emeishan basalts in the Sichuan basin

Palaeogeothermal response and record of the effusing of Emei...

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中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： ZHU ChuanQing~(1,2*),XU Ming~(1,2),YUAN YuSong~3,ZHAO YongQing~4,SHAN JingNan~(1,2), HE ZhiGuo~5,TIAN YunTao~(1,2) & HU ShengBiao~1 1 institute of Geology and Geophysics,Chinese Academy of Sciences,beijing 100029,china 2 The Graduate University of Chinese Academy of Sciences,beijing 100049,china 3 exploration and production research institute,sinopec,beijing 100083,china 4 exploration Department of South Company of Prospecting,sinopec,Chengdu 610041,china 5 exploration and Development research institute of sinopec Southwest Branch,Chengdu 610081,china

Thermal history of the Sichuan basin is reconstructed based on vitrinite reflectance from boreholes in the basin using a paleo-heat flow *** results show that the Sichuan basin experienced a relatively low heat flow period in the Early Paleozoic,and an elevated paleo-heat flow,ranging 60-80 mW/m with a maximum as high as 100 mW/m around 259 Ma,from the beginning of the Late Paleozoic to the end of the early Permian,and a decreased paleo-heat flow from the late Permian to the late Triassic,and then maintained nearly stable to the *** Late Paleozoic paleo-heat flow was quite high where there were extensive Emeishan flood basalts or concealed basalts which erupted between the early and the late Permian,such as the southwestern and northeastern areas of the Sichuan *** to the distribution of paleo-heat flow,it can be inferred that,the northeastern Sichuan basin was also influenced by the Emeishan magmatic activity during the Dongwu movement though there was lack of Emeishan flood *** addition,the results of thermal history reconstruction of the Sichuan basin provide paleogeothermal evidence for the existence and onset of the Emaishan mantle plume.

关键词： vitrinite reflectance paleo-heat flow method thermal history Emeishan mantle plume Sichuan basin

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利用IPR方法确定启动压力

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石油学报 2003年第2期24卷 81-83页

作者：郑祥克陶永建涂彬魏俊之中国石化石油勘探开发研究院北京100083 大港油田采油三厂河北沧州061023 石油大学石油天然气工程学院北京102249

在Wiggins对达西流工作的基础上 ,推导出低速非达西渗流的产能方程 ,为流入动态关系 (IPR)曲线方法在低渗、特低渗透油藏中的应用提供了理论依据。根据所建立的IPR方程 ,探索了利用多个生产数据或试井数据来快速确定启动压力或启动压力... 详细信息

在Wiggins对达西流工作的基础上 ,推导出低速非达西渗流的产能方程 ,为流入动态关系 (IPR)曲线方法在低渗、特低渗透油藏中的应用提供了理论依据。根据所建立的IPR方程 ,探索了利用多个生产数据或试井数据来快速确定启动压力或启动压力梯度的工程应用问题。对靖安油田长 6特低渗储层的计算结果表明 ,虽然各个井所在储层的启动压力可能相差较大 ,但所获得的启动压力梯度却基本接近 ,这与研究区内储层物性相差不大的结果相吻合。应用结果也表明 ,该方法所得结果与试井分析以及岩心实验结果具有可比性 ,而该方法使用更简便 ,且结果可满足工程分析的精度要求。

关键词：流入动态关系启动压力低渗透油藏产能评价解析方法

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THE EFFECT OF EMEISHAN SUPPER MANTLE PLUME ON THE THERMAL EVOLUTION OF HYDROCARBON SOURCE ROCKS IN THE SICHUAN BASIN

THE EFFECT OF EMEISHAN SUPPER MANTLE PLUME ON THE THERMAL EV...

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中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： ZHU Chuan-Qing~(1,2),TIAN Yun-Tao~(1,2),XU Ming~(1,2),RAO Song~(1,2), YUAN Yu-Song~3,ZHAO Yong-Qing~4,HU Sheng-Biao~1 1 State Key Laboratory of Lithospheric Evolution,institute of Geology and Geophysics, Chinese Academy of Sciences,beijing 100029,china 2 The Graduate University of Chinese Academy of Sciences,beijing 100049,china 3 exploration and production research institute,sinopec,beijing 100083,china 4 exploration Department of South Company of Prospecting,sinopec,Chengdu 610041,china

Both the structural evolution and thermal history of the Middle-Late Permian Sichuan Basin are closely related to activity of the Emeishan Supper Mantle Plume(ESMP).The ESMP played an important role in the thermal evolution of the pre-Middle Permian hydrocarbon source rocks in the southwestern part of the Sichuan *** the basis of reconstructed thermal history of the Sichuan basin,based on vitrinite reflectance (R)from boreholes in the basin,using a paleo-heat flow method,the effect of the ESMP on the evolution of the pre-Middle Permian source rocks is *** results show that in the southwestern part of the Sichuan Basin (the intermediate zone of the ESMP)the organic matter of the Paleozoic source rocks became mature in middle Late *** indicates that the thermal evolution of the Paleozoic source rocks was strongly affected by the *** more detail,in the region close to the ESMP,the source rocks of lower Permian were heated to peak maturity(maximum R>3%)at around 260 Ma and later there was no secondary hydrocarbon generation. However,in the regions far away from the ESMP,secondary Mesozoic hydrocarbon generation of the source rocks *** thermal evolution of the Mesozoic source rocks was related with Mesozoic foreland basin evolution burial history and subsequent regional denudation of the basin,rather than the ***,except in the regions far away from the ESMP,the prospect of oil and gas from Paleozoic source rocks is unfavorable.

关键词： Thermal evolution Vitrinite reflectance Paleo-heat flow method Emeishan supper mantle plume Sichuan Basin

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中国中西部前陆盆地构造变形特征与油气勘探前景

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邢台职业技术学院学报 2004年第3期21卷 5-6,10页

作者：李明杰郑孟林中国地质大学中国石油化工股份有限公司石油勘探开发研究院北京100083

本文应用地质、地震、非地震、钻井等资料,结合前人研究成果,对中国中西部前陆盆地进行了综合研究,认为中西部前陆盆地为复合、叠合盆地,具有双层结构模式,盆地的结构存在较大差异,盆地内塑性岩层对构造变形具有重要的调节作用,各前陆... 详细信息

本文应用地质、地震、非地震、钻井等资料,结合前人研究成果,对中国中西部前陆盆地进行了综合研究,认为中西部前陆盆地为复合、叠合盆地,具有双层结构模式,盆地的结构存在较大差异,盆地内塑性岩层对构造变形具有重要的调节作用,各前陆盆地均存在一组与盆地走向近于垂直的断裂构造,对盆地的变形特点、油气的分布具有重要控制作用。前陆盆地烃源岩发育,构造成排成带,是有利的油气勘探区,构造带与烃源岩的位置关系决定了油气勘探的潜力。

关键词：前陆盆地冲断带油气勘探中国构造变形

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Carbon and hydrogen isotopic characteristics of natural gases from the Luliang and Baoshan basins in Yunnan Province, china

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Science china Earth Sciences 2006年第9期49卷 938-946页

作者： XU Yongchang1, LIU Wenhui2, SHEN Ping1, WANG Wanchun1, WANG Xiaofeng1, Tenger1, YAN Yaomin3 & LIU Ruobin3 1. Lanzhou Center of Oil & Gas Resources, institute of Geology and Geophsics, Chinese Academy of Sciences, Lanzhou 730000, china 2. research institute of Petroleum exploration and production, sinopec, beijing 100083, china 3. South Branch of Petroleum exploration and production Company, sinopec, Kuming 650000, china Lanzhou Center of Oil & Gas Resources Institute of Geology and Geophsics Chinese Academy of Sciences Lanzhou China research institute of Petroleum exploration and production SINOPEC Beijing China South Branch of Petroleum exploration and production Company SINOPEC Kuming China

The Luliang and Baoshan basins of Yunnan Province are two small-sizedcontinental oil/gas-bearing sedimentary basins, which were developed at the bases of theCarboniferous and Devonian systems during the Late Tertiary, covering an area of 325 km^2 and 254km^2, respectively. Since the 1990s, there have been discovered small-sized natural gas pools inthese two basins. The natural gases are composed mainly of hydrocarbon gases, with nonhydrocarbonsaccounting for less than 2%. Of the hydrocarbon gases, methane accounts for more than 99%, and thecomponents above C_2 account for less than 0.2%. On the basis of previous studies of geologicalbackground, the composition of natural gases and their carbon isotopic composition, it has beendefined that these two gas pools are of bacterial origin. In this work we have comprehensivelymeasured the carbon and hydrogen isotopic composition of natural gases from these two basins andhave gone into the details of the mechanism of gas generation. The δ^(13)C_1 values of naturalgases from the Luliang Basin are within the range of -72.1 per thousand - -73.3 per thousand, andthe δD_(CH_4) values, -242 per thousand - -234 per thousand, indicating that the bacterial gasgeneration is dominated by the way of CO_2 reduction. It has been evidenced that undercontinental-facies fresh water conditions there did occur the CO_2 reduction as a process ofbacterial gas generation. The δ^(13)C_1 values of natural gases from the Baoshan Basin are withinthe range of - 62.5 per thousand - -63.5 per thousand, and the δD_(CH_4) values, -252 per thousand- -260 per thousand. These isotopic characteristics are fallen into transitional phase of acetatefermentation and CO_2 reduction as defined by Whiticar et al. (1986). An important discovery in theLuliang Basin is the carbon isotopic composition of ethane of purely biogenetic origin, i.e., itsδ^(13)C_2 values are within the range of - 61.2 per thousand - - 66.0 per thousand. These carbonisotopic values have been r

关键词： bacterial gas, carbon and hydrogen isotope, CO2 reduction, acetate fermentation.

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Mechanism of production increasing of coalbed gas for the pinnate horizontal well and sensitivity effect of parameters on gas production

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Chinese Science Bulletin 2005年第S1期50卷 163-170页

作者： ZHANG Dongli & WANG Xinhai sinopec exploration & production research institute, beijing 100083, china College of Geoscience of Yangtze University, Jingzhou 434023, china sinopec exploration & production research institute Beijing China College of Geoscience of Yangtze University Jingzhou China

The mechanism of production increasing for the pinnate horizontal well is analyzed with the simulation technique. It is pointed out that the whole horizontal well-bore spreading widely and evenly in coal layers makes the stratum pressure drop evenly and fast, which increases the chance of desorption and diffusion and area controlled. This is the basic reason that the pinnate horizontal well can increase production. How such stratum parameters as permeability, Langmuir constants and adsorption time constant affect the gas production for the pinnate horizontal well is also studied with numerical simulations. Either for the vertical well or the pinnate horizontal well, bigger stratum permeability, steeper relative permeability curve, smaller residual gas saturation, higher gas content and stratum pressure are more favorable for gas production increasing. Langmuir constants decide the change of desorption quantity and influence the gas production through changing the extent of steep of isothermal adsorption curves in the pressure dropping area. The adsorption time constant only influences the time that gas production arrives at the maximum value for the vertical well, but it almost has no influence on the gas production for the pinnate horizontal well because the equivalent adsorption time constant is reduced.

关键词： coalbed gas pinnate horizontal well mechanism numerical simulation sensitivity effect.

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Formation mechanism of carbonate cemented zones adjacent to the top overpressured surface in the central Junggar Basin,NW china

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Science china Earth Sciences 2010年第4期53卷 529-540页

作者： YANG Zhi1,2,ZOU CaiNeng1,3,HE Sheng2,LI QiYan1,HE ZhiLiang3,WU HengZhi5,CAO Feng1,MENG XianLong4,WANG FuRong2 & XIAO Qilin21 State Key Laboratory of EOR,research institute of Petroleum exploration & Development,Petrochina,beijing 100083,china 2 Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,china University of Geosciences,Wuhan 430074,china 3 State Key Laboratory of EOR,research institute of Petroleum exploration & Development,Petrochina,beijing 100083,china 4 research institute of Petroleum exploration and production,sinopec,beijing 100083,china 5 Southwest Branch Company,sinopec,Chengdu 610051,china State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development PetroChina Beijing China Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Wuhan China State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development Petrochina Beijing China Southwest Branch Company SINOPEC Chengdu China research institute of Petroleum exploration and production SINOPEC Beijing China

Carbonate cemented zones are normally adjacent to the top overpressured surface in the central Junggar Basin,NW *** carbon and oxygen isotopic compositions and petrological investigations of carbonate cements in the carbonate cemented zones indicate that:(1) carbonate cements are composed dominantly of ferrocalcite,ferroan dolomite,and ankerite;(2) carbonate cements are formed under a high temperature circumstance in the subsurface,and organic fluid migration has an important effect on the formation of them;and(3) carbon and oxygen ions in the carbonate cements migrate from the underlying overpressured *** suggests that the occurrence of carbonate cemented zones in this region results from multiple phases of organic fluid expulsion out of the overpressure compartment through geological *** study provides a plausible mechanism of the formation of carbonate cemented zones adjacent to the top overpressured surface in the clastic sedimentary basins,and has an important implication for understanding the internal correlation between the formation of carbonate cemented zones adjacent to top overpressured surface and geofluids expulsion out of overpressured system.

关键词： carbonate cemented zones formation mechanism stable carbon and oxygen isotopic top overpressured surface central Junggar Basin coal-bearing strata

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