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petroleum Science 2010年第4期7卷 530-535页

作者： Jiang Hanqiao Ye Shuangjiang Lei Zhanxiang Wang Xing Zhu Guojin Chen Minfeng Key Laboratory of petroleum Engineering Ministry of Education China University of Petroleum Beijing 102249 China research institute of petroleum exploration and development PetroChina Beijing 100083 China research institute of china National Offshore Oil Corporation Beijing 100027 China

It is very difficult to evaluate the productivity of horizontal wells in fault block reservoirs due to the influence of fault *** the basis of the method of images and source-sink theory,a semianalytical model coupling reservoir and finite conductivity horizontal wellbore flow dynamics was built,in which the influence of fault sealing was taken into *** distribution of wellbore flow and radial inflow profiles along the horizontal interval were also *** impact of the distance between the horizontal well and the fault on the well productivity was quantitatively *** on this analysis,the optimal distance between the horizontal well and the fault in banded fault block reservoirs could be *** to the field application,the relative error calculated by the model proposed in this paper is within ±15%.It is an effective evaluation method for the productivity of horizontal wells in fault block *** productivity of the horizontal well increases logarithmically as the distance between the horizontal well and the fault *** optimal distance between the horizontal well and the fault is 0.25-0.3 times the horizontal well length.

关键词： Fault block reservoir horizontal well finite conductivity productivity evaluation well location design

Mechanism of catalytic hydropyrolysis of sedimentary organic matter with MoS_2

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petroleum Science 2011年第2期8卷 134-142页

作者： He Kun Zhang Shuichang Mi Jingkui Chen Jianping Cheng Lei petroleum Geology research and Central Laboratory Research Institute of Petroleum Exploration and Development （RIPED） PetroChina Beijing 100083 China CNPC Key Laboratories for petroleum Geochemistry Beijing 100083 China

MoS2 was used as an efficient catalyst for hydropyrolysis （Hypy） of three samples of sedimentary organic matter with different maturities. Through comparison with Soxhlet extraction （SE）, it was found that MoS2 catalytic Hypy can remarkably promote the yields of total chloroform extracts, saturates, aromatics, hopanes and steranes. In addition, the difference of biomarker parameters indicated that isomerization of covalently-bound biomarkers is much more difficult than their free counterparts. Meanwhile, the high conversion of total organic carbon （TOC） in MoS2 catalytic Hypy of organic matter proved that the presence of dispersed molybdenum sulfide accelerated the breaking of C-C bonds and the release of hydrocarbons. To address the catalytic mechanism, a series of control experiments based on free Hypy and catalytic Hypy were conducted. The results showed that the calculated atomic ratio of carbon conversion/hydrogen conversion for catalytic Hypy was much larger than the presumed value of 1/2, indicating that intensive hydrogenation took place and significantly influenced the distribution of liquid products. Analysis of stable hydrogen isotope data, infrared spectra and m/z 83 ion chromatograph of the saturate fraction further confirmed this hypothesis. The difference of S content changing （AS） between catalyst-free Hypy and catalytic Hypy, and the thermal characteristics of the catalyst, indicated that active H2S was definitely generated and it probably initiated free radical reactions in the early stage of hydropyrolysis of organic matter.

关键词： Catalytic hydropyrolysis molybdenum disulfide kerogen coal Soxhlet extraction,biomarkers

THE CHARACTERISTICS OF REMOTE SENSING TECTONICS IN QIANGTANG-CHANGDU MASSIF, QINGHAI-TIBET PLATEAU

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地学前缘 2000年第S1期7卷 435-437页

作者： Zhao Zhengzhang 1,Ye Hefei 2,Li Yongtie 2(1 china National petroleum Corporation, beijing 100724,china 2 research institute of petroleum exploration and development, CNPC, beijing 100083,china)

The northern Tibet plateau is the core of generalized Qinghai—Tibet plateau. The main part of Qiangtang—Changdu massif, which is 45×10 4km 2 and more than 5000m in altitude, conforms to the northern Tibet plateau in area.1 The shape features and boundary conditions of Qiangtang—Changdu massif\;(1) Qiangtang—Changdu massif shows huge flat\|lying “S” area In MSS7 mosaic image, Qiangtang—Changdu massif extends in west and east, and appears a long\|elliptic huge block composed of feathered and dendritic textures.. Noticeably, there are two similar texture “tails" in the west and east ends of the massif. The western tail turns and constringes to the north, and eastern tail to the south. Thereby, the massif shows huge “S" area. According to the regional analysis, the eastern tail locates between Shaluli Mt.\|Taniantaweng Mt. and Mujiang River, and western part through Bangong\|Co connects with Pamirs along Karakoram Mt. In regional tectonics, the massif locates between Lazhulong\|Xijinwulan\|Co\|Jinshajiang River and Bangong\|Co\|Dongqiao\|Nujiang River fault belts.

关键词： Qiangtang—Changdu massif remote sensing boundary condition circular structure deformin g features mechanic characteristic dynamics

Physical simulation of fluid flow and production performance in extra-low permeability porous media

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petroleum Science 2009年第4期6卷 415-420页

作者： You Yuan Yue Xiang’an Li Mingyi Zhao Chunpeng Zhang Tao Key Laboratory of petroleum Engineering Ministry of EducationChina University of PetroleumBeijing 102249China Enhanced Oil Recovery research Center China University of PetroleumBeijing 102249China Jilin Oil Field PetroChinaSongyuanJilin 138000China exploration&Production research institute SinopecBeijing 100083China exploration Department Changqing Oil FieldPetroChinaXi’anShaanxi 710018China

For extra-low permeability reservoirs, with a permeability of about 0.3×10?3 μm2, fluid flow and production performance in cores were studied. A long core holder with a multi-location piezometric measurement was specially designed. An artificial long core, about 700 mm long and with a cross section of 45mm×45mm, was used. In the experiment, pressure distribution along the core can be measured in real time. Single phase flow in the core was investigated. Different modes of production in long cores were also simulated including natural depletion, water flooding, and advanced water flooding. Through physical simulation, flow parameters were collected and production characteristics in extra-low permeability cores were studied. From experimental results, it can be seen that fluid flow in extra-low permeability cores is different from that in high permeability cores. Transmission of pressure in extra-low permeability cores is very slow, and it needs a long time for the pressure to become stable. The distribution curve of pressure along the core is nonlinear and the production rate in extra-low permeability reservoirs decreases sharply. The development effects of different production modes in extra-low permeability cores were compared with one another. Among the production modes, advanced water flooding has much potential for effective development of extra-low permeability reservoirs. Natural depletion and conventional water flooding can also be used in early production periods. In addition, the countermeasures and some ideas especially for the potential development of extra-low permeability reservoirs are suggested.

关键词： Extra-low permeability reservoirs physical simulation fluid flow production performance

A NEW METHOD FOR PREDICTION OF PRODUCTIVITY OF FRACTURED HORIZONTAL WELLS BASED ON NON-STEADY FLOW

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Journal of Hydrodynamics 2007年第4期19卷 494-500页

作者： LEI Zheng-dong CHENG Shi-qing LI Xiang-fang XIAO Hua-ping research institute of petroleum exploration and development Beijing 100083 China CMOE Key Laboratory of petroleum Engineering China University of Petroleum Beijing 102249China beijing Huayou Natural Gas Co. Itd Beijing 100100 China

Hydraulic fracturing technologies of horizontal well are important ways to develop oil-gas field with low permeability. Productivity forecast of fractured horizontal wells is a difficult problem of hydraulic fracturing technologies. Basing on non-steady flow of fractures fluid during production, applying potential function principles, superposition principle and mathematical method for solving, coupling of seepage flow in the formation and pipe flow in the well bore, a new model on multi-fracture interference productivity forecast of fractured horizofltal well is established in this article. The results indicate the coincidence rate between this model and practice is high. The pressure loss in the horizontal well bore has definite influence on the production status of fractured horizontal wells. The productions of different fractures in horizontal well bore are unequal, the productions of outer fractures are higher than middle fractures; the pressure in the well bore shows an uneven distribution, the pressure declines gradually from finger tip to heel end. Asymmetry of fractures may make productivity of fractured horizontal wells decline. The conclusions are instructive in designing fractured horizontal well for low permeability reservoir.

关键词： horizontal well fracturing productivity couple non-steady flow

Formation　of　the　Central－Asia　Coal－Formed　Gas　Accumulation　Domain　and　its 　Source　Rocks──Series　Study　Ⅰ　on　the　Central－Asia　Coal－formed　Gas　Accumulation　Domain

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石油勘探与开发 1995年第3期 117-124页

作者： Dai Jin-xing He Bin Sun Yong-xiang Li Peng-ju Li Xian-qi(research institute of petroleum exploration and development, CNPC, beijing, 100083)

ＦｏｒｍａｔｉｏｎｏｆｔｈｅＣｅｎｔｒａｌ－ＡｓｉａＣｏａｌ－ＦｏｒｍｅｄＧａｓＡｃｃｕｍｕｌａｔｉｏｎＤｏｍａｉｎａｎｄｉｔ８ＳｏｕｒｃｅＲｏｃｋｓ──ＳｅｒｉｅｓＳｔｕｄｙⅠｏｎｔｈｅＣｅｎｔｒａｌ－ＡｓｉａＣｏ... 详细信息

ＦｏｒｍａｔｉｏｎｏｆｔｈｅＣｅｎｔｒａｌ－ＡｓｉａＣｏａｌ－ＦｏｒｍｅｄＧａｓＡｃｃｕｍｕｌａｔｉｏｎＤｏｍａｉｎａｎｄｉｔ８ＳｏｕｒｃｅＲｏｃｋｓ──ＳｅｒｉｅｓＳｔｕｄｙⅠｏｎｔｈｅＣｅｎｔｒａｌ－ＡｓｉａＣｏａｌ－ｆｏｒｍｅｄＧａｓＡｃｃｕｍ...

关键词： Central-Asia Gas accumulation domain Coal-measure Gas source rocks

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含蜡原油石蜡沉积模拟方法研究

石油学报 2003年第2期24卷 105-108页

作者：刘敏中国石油勘探开发研究院北京100083

对从苏丹Unity油田现场取得有代表性的原油样品进行了原油组分分析和析蜡点测试。并针对油田的生产状况 ,利用与美国德士古石油公司合作建立的自动化高压石蜡沉积循环管道模拟系统 ,采用冷却实验步骤测试了苏丹原油从高于原油析蜡点温... 详细信息

对从苏丹Unity油田现场取得有代表性的原油样品进行了原油组分分析和析蜡点测试。并针对油田的生产状况 ,利用与美国德士古石油公司合作建立的自动化高压石蜡沉积循环管道模拟系统 ,采用冷却实验步骤测试了苏丹原油从高于原油析蜡点温度到较低环境温度范围内在现场流速、油温和环境温度下的石蜡沉积速率 ,定量研究了流速和油温对石蜡沉积速率的影响 ,并采用分子扩散和剪切效应的总效应来描述石蜡沉积机理。利用临界蜡张力作为模拟放大因子 ,采用半经验的石蜡沉积数学模型 ,预测了Unity油田 2 1井的生产井筒在现场生产条件下的石蜡沉积情况 ,模拟了不同产量和不同时间的蜡沉积剖面。结果表明 ,该油井在目前高产条件下 ,未发生石蜡沉积问题 ;在低产时 ,须考虑清蜡和防蜡措施。

关键词：石蜡沉积临界蜡张力模拟研究生产工况井筒石蜡沉积机理含蜡原油

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烃源岩压实渗流排油模型

石油学报 2004年第5期25卷 34-37页

作者：石广仁张庆春中国石油勘探开发研究院北京100083

提出了烃源岩油水两相系统相对渗透率计算公式 ,与逐次沉积压实排液的原理相结合 ,建立了新的排油模型 (简称压实渗流模型 )。该模型与原有纯压实模型相比 ,主要优点是 :①取消了纯压实模型中基于排液前的油水之比与排液量中的油水之比... 详细信息

提出了烃源岩油水两相系统相对渗透率计算公式 ,与逐次沉积压实排液的原理相结合 ,建立了新的排油模型 (简称压实渗流模型 )。该模型与原有纯压实模型相比 ,主要优点是 :①取消了纯压实模型中基于排液前的油水之比与排液量中的油水之比相等的粗略假设 ,使排液量中的油水之比由油水两相的相对渗透率和粘度来确定 ,从本质上改善了地质模型的合理性 ;②克服了纯压实模型因前期排油过早、过大及后期偏小的缺点 ,大大提高了排油史的模拟精度 ,从而确保随后对油运、聚史的模拟真实性。两种模型在库车坳陷进行了对比应用。

关键词：盆地模拟油水系统烃源岩相对渗透率排油模型压实渗流模型库车坳陷

Abnormal high pressure in Kuqa foreland thrust belt of Tarim basin: Origin and impacts on hydrocarbon accumulation

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Progress in Natural Science:Materials International 2006年第12期16卷 1307-1314页

作者： ZENG Lianbo~1** and LIU Benming~ 1,2 (1. Key Laboratory of Hydrocarbon Accumulation in china petroleum University, Ministry of Education, beijing 102249, china 2. The institute of Oil and Gas exploration and development, Tarim Oilfield Company, petrochina Company Limited, Korla 841000, china) Key Laboratory of Hydrocarbon Accumulation in china Petroleum University Ministry of Education Beijing 102249 China The institute of Oil and Gas exploration and development Tarim Oilfield Company PetroChina Company Limited Korla 841000 China

Following analyses of the abnormal high pressure distribution characteristics, based on the geological characteristics, tectonic stress field and physical simulation, we investigated the formation mechanisms of abnormal high pressure and its impacts on hydrocarbon accumulation in the Kuqa foreland thrust belt. The abnormal high pressure appears at the bottom of the Paleogene and obviously exists in the Triassic and Jurassic. However, the pressure coefficient in the Triassic and Jurassic is lower than that in the Cretaceous and at the bottom of the Paleogene. Horizontally, the abnormal high pressure distribution is characterized by E-W orientation zoning. The maximum pressure coefficient lies in the Kelasu-Dongqiu-Dina tectonic zones in the center of the Kuqa foreland thrust belt and decreases away from the tectonic zones. The formation of abnormal high pressure was mainly related with the intense tectonic compression in the Early Pleistocene time, and tectonic uplifting, undercompaction and hydrocarbon generation were secondary factors contributing to abnormal high pressure. Under the rapid and intense tectonic compression in the Early Pleistocene, the rock framework firstly undertook 1/4 of the compression stress and the other was borne by the pore fluids. Due to the presence of great seal of gypsum-salt or gypsum-mudstone beds in the Paleogene, the pressure of pore fluids increased rapidly and led to the abnormal high pressure in the Kuqa foreland thrust belt. The abnormal high pressure has important impacts on hydrocarbon accumulation. It is one of the necessary conditions for formation of large oil and gas fields in the Kuqa foreland thrust belt.

关键词： abnormal high pressure formation mechanism oil and gas reservoir Kuqa foreland thrust belt Tarim basin.

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.