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Oil source analysis of Upper Tertiary Shawan Formation in Chepaizi area,in the northwest margin of Junggar basin

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Science China Earth Sciences 2009年第S1期52卷 106-114页

作者： WANG ZhenQi1.ZHI DongMing2,ZHANG ChangMin1.XUE XinKe2,ZHANG ShangFeng1.LI TianMing2,YANG Fei1.LIU LouJun2,CHENG Liang1.LU Dong1.ZHOU FengJuan1. CHEN YuanYong1.1.College of Earth Science,Yangtze University,Jingzhou 434023,China 2 research {1. of exploration and development,Xinjiang oilfield Co. Ltd.,CNPC,Karamay 834000,China 1. College of Earth Science Yangtze University Jingzhou 434023 China 2. research {1. of exploration and development Xinjiang Oilfield Co. Ltd. CNPC Karamay 834000 China

Well che89,located in the Chepaizi area in the northwest margin of Junggar basin,acquires high production industrial oil flow,which is an important breakthrough in the exploration of the south foreland slope area of Junggar basin. The Chepaizi area is near two hydrocarbon generation depressions of Sikeshu and Shawan,which have sets of hydrocarbon source rock of Carboniferous to Jurassic as well as Upper Tertiary. Geological and geochemical parameters are proper for the accumulation of mixed source crude oil. Carbon isotope,group composition and biomarkers of crude oil in Upper Tertiary of well Che89 show that the features of crude oil in Upper Tertiary Shawan Formation are between that of Permian and Jurassic,some of them are similar to these two,and some are of difference,they should be the mixed source of Permian and Jurassic. Geochemical analysis and geological study show that sand extract of Lower Tertiary Wulunguhe Formation has the same source as the crude oil and sand extract of Upper Tertiary Shawan Formation,but they are not charged in the same period. Oil/gas of Wulunguhe Formation is charged before Upper Tertiary sedimentation,and suffered serious biodegradation and oxidation and rinsing,which provide a proof in another aspect that the crude oil of Upper Tertiary Shawan Formation of well Che89 is not from hydrocarbon source rock of Lower Tertiary.

关键词： oil-source analysis mixed sources Upper Tertiary Shawan Formation Chepaizi area Junggar basin

Hydrocarbon enrichment characteristics and difference analysis in the TZ1.TZ4 well block of the Tarim Basin

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Petroleum Science 2010年第2期7卷 201-210页

作者： Jiang Zhenxue Pang Xiongqi Yang Haijun Li Zhuo Xiang Caifu Gu Qiaoyuan State Key Laboratory of Petroleum Resources and Prospecting Beijing 102249 China Basin and Reservoirresearch Center China University＂ of Petroleum Beijing 102249 China exploration and {1. institute of the Tarim oilfield Company PetroChina Korla Xinjiang 841000 China

The reservoirs in the TZ1.TZ4 well block of the Tarim Basin are complex, and the hydrocarbon enrichment shows differences. The three Carboniferous oil layers are characterized by ＂oil in the upper and lower layers and gas in the middle＂ in profile and ＂oil in the west and gas in the east＂ in plane view. In order to discuss the complex reservoir accumulation mechanisms, based on the petroleum geology and reservoir distribution, we studied the generation history of source rocks, the fault evolution and sealing, the accumulation periods and gas washing, and reconstructed the accumulation process of the TZ1.TZ4 well block. It is concluded that the hydrocarbon enrichment differences of oil layers CIII, CII and CI were caused by multiple sources and multi-period hydrocarbon charging and adjustment. The CII was closely related to CIII, but CI was formed by reservoir adjustment during the Yanshan period and was not affected by gas washing after it was formed. During the Himalayan period, different degrees of gas washing in the east and west led to hydrocarbon enrichment differences on the plane. The Carboniferous accumulation process of two-stage charging and one-stage adjustment is summarized： oil charging during the late Hercynian period is the first accumulation period of CIII and CII; oil reservoirs were adjusted into CI in the Yanshan period; finally gas washing in the Himalayan period is the second accumulation period of CIII and CII, but CI was not affected by gas washing. This complex accumulation process leads to the hydrocarbon enrichment differences in the TZ1.TZ4 well block.

关键词： Tarim Basin enrichment difference multi-source and multi-period charging accumulation process

Accumulation process and model for the Ordovician buried hill reservoir in the western Lunnan area,the Tarim Basin

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Science Bulletin 2007年第S1期 224-235页

作者： ZHAO MengJun1. PAN WenQing2, HAN JianFa2, LIU ShaoBo1. QIN ShengFei1.& ZHANG BaoMin1.1.Central Laboratory of Petroleum Geology research of RIPED, PetroChina, Beijing 1.0083, China 2 {1. of Petroleum exploration and development of Tarim oilfield, PetroChina, Korla 841.00, China

The Ordovician buried hill reservoir in the western Lunnan area, a type of dissolved fracture and cavernous reservoir, is mainly composed of heavy oil. The oil is the mixture sourcing from the Middle-Lower Cambrian and Middle-Lower Ordovician, with three stages of pool forming process: (1. the destruction and parallel migration/accumulation during the late Caledonian to early Hercynian; (2) the oil and gas accumulation during the late Hercynian characterized by adjustment upward along faults and parallel migration/accumulation; (3) the formation of heavy oil during the latest Hercynian. The Ordovician buried hill reservoir is affected by the diffusion of light oil and gas but had no hydrocarbon charging during the late Yanshan period to Himalayan period, but in this period, formed the association of heavy oil and dissolved gas cracked from crude oil with dry coefficient of 0.91.0.96. The study on accumulation process of the Ordovician buried hill reservoir has important implications for the exploration potential of early oil and gas accumulation in the cratonic area of the Tarim Basin.

关键词： source of oil and gas reservoir bitumen inclusion filling periods accumulation model Tabei Uplift

Calculation of depth to detachment and its significance in the Kuqa Depression:A discussion

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Petroleum Science 2009年第1期6卷 17-20页

作者： Li Shiqin Feng Lei Tang Pengcheng Rao Gang Bao Yahong Department of Earth Sciences Zhejiang University Hangzhou Zhejiang 310027 China research {1. of exploration and development Tarim Oilfield Company PetroChina Korla Xinjiang 840000 China Archives of Tarim oilfield Company PetroChina Korla Xinjiang 840000 China

We analyze the excess area and depth to detachment method developed by Epard and Groshong （1.93）, and apply it to the sand box model of Ge et al （2004） to illustrate that inadequate consideration will affect the calculation of true depth to detachment. Using the data of Yu et al （2006） to fit linear regression lines, we obtain the depths to detachment of Kela-2, Misikantage anticline and Dongqiu-8 structures, 1.5.74km, 1..1.km, and 75.48km below the reference level （Cretaceous bottom） respectively with the excess area intercept equal to zero. However, the calculation results of depth to detachment in Yu et al （2006） are based on excess area intercept unequal to zero.

关键词： Excess area depth to detachment Kuqa Depression

Limitation of fault-sealing and its control on hydrocarbon accumulation——An example from the Laoyemiao Oilfi eld of the Nanpu Sag

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Petroleum Science 2008年第4期5卷 295-301页

作者： Jiang Zhenxue Dong Yuexia Li Hongyi Liu Luofu Liu Guangdi Li Xiaoying Basin and Reservoir research Center China University of Petroleum Beijing 102249 China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China research {1. of exploration and development Jidong Oilfield PetroChina Tangshan Hebei 063004 China School of Resources and Information Technology China University of Petroleum Beijing 102249 China

Based on previous studies on the internal structures of fault belts, the fault belts in the Laoyemiao oilfield of the Nanpu Sag can be divided into three units, a crushed zone, an upper induced fracture zone and a lower induced fracture zone according to the log response characteristics. The upper induced fracture zone is characterized by the {1. of pervasive fractures and has a poor sealing or non-sealing capability. It therefore can act as pathways for hydrocarbon migration. The lower induced fracture zone consists of fewer fractures and has limited sealing capability. The crushed zone has a good sealing capability comparable to mudstone and can thus prevent lateral migration of fluid. Through physical modeling and comparing laboratory data with calculated data of oil column heights of traps sealed by faults, it is concluded that the fault-sealing capability for oil and gas is limited. When the oil column height reaches a threshold, oil will spill over from the top of reservoir along the lower induced fracture zone under the action of buoyancy, and the size of reservoir will remain unchanged. Analysis of the formation mechanisms of the fault-sealed reservoirs in the Nanpu Sag indicated that the charging sequence of oil and gas in the reservoir was from lower formation to upper formation, with the fault playing an important role in oil and gas accumulation. The hydrocarbon potential in reverse fault-sealed traps is much better than that in the consequent fault-sealed traps. The reverse fault-sealed traps are favorable and preferred exploration targets.

关键词： Limitation of fault-sealing fault belt oil column height hydrocarbon accumulation Nanpu Sag

An Experimental Study on Resistivity-Saturation Relation and Resistivity Hysteresis of Reservoir Rocks in Oil and Water Displacement Processes

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An Experimental Study on Resistivity-Saturation Relation and...

Geochronology, geochemistry and its significance of the early Cretaceous volcanic rocks from fault-depression area in North of Songliao basin

迎接地球电磁技术发展的机遇和挑战——第十届中国国际地球电磁学术讨论会

作者： Baihong Wen~1.Hui Yang~1.Yan Zhang~1.Zhanshan Xiao~2,Yunsheng Zhao~3 1.research {1. of Petroleum exploration and development 2 Liaohe oilfield,Panjin,Liaoning,China 3 Zhejiang University,Hangzhou,Zhejiang,China

Electrical resistivity measurements of 35 core samples are carried out in oil and water displacement simulation *** on correlation of these resistivity data at different water saturation a power-law’s resistivity-saturation relation and a linear relation of surface resistivity ratio(SRR) to irreducible water saturation(SWI) are revealed in oil displacement *** maximum resistivity difference(MRD) of resistivity hysteretic loop is inversely proportional to SWI of the core *** displacement cycle most sandstone samples exhibit water wetting character,minority indicate oil wetting. The dependence of SRR of the rock-water-oil system and the MRD of the resistivity hysteretic loop on wettability of the core samples will be helpful to estimate the petrophysical attributes of the reservoir rocks.

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Geochronology, geochemistry and its significance of the earl...

International Conference on Continental Volcanism

作者： Feng-Qi Zhang , Yan-Ming Pang , Chuan-Wan Dong , Shu-Feng Yang , Han-Lin Chen , Ping Shu Earth Science Department of Zhejiang University, 31.027 Hangzhou, China exploration and {1. research institute of daqing oilfield, 1.371. daqing, China.

＜正＞A suite of volcanic intermediate rocks to acidites, mainly acidic eruptive rocks, was widely distributed during the early Cretaceous in Xujiaweizi depression, north of Songliao basin, including basaltic trachyte andesite, andesite, dasite, rhyolite and rhyolitic volcaniclastic rocks, etc., which mostly belong to subalkaline and para-pelite.

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火山活动与油气资源

新疆石油地质 2003年第2期24卷 176-179页

作者：郭占谦中国石油大庆油田有限责任公司勘探开发研究院黑龙江大庆163712

火山活动为地壳表层带来了地球的深部物质,沉积岩、火山岩兼有的二元结构盆地,不仅有地壳表层的、低温的、生物成因的有机物质,还有来自地球深部的、高温的、非生物成因的无机物质。其中有CO、CO2、CH4、C2H6、C3H8、H2、He、Ar等气态物... 详细信息

火山活动为地壳表层带来了地球的深部物质,沉积岩、火山岩兼有的二元结构盆地,不仅有地壳表层的、低温的、生物成因的有机物质,还有来自地球深部的、高温的、非生物成因的无机物质。其中有CO、CO2、CH4、C2H6、C3H8、H2、He、Ar等气态物质,有热液初生水以及以水为载体的各种元素等液态物质。因此,在有火山活动的沉积盆地中应有烃气及非烃气的多种天然气资源;有生物成因的油气资源;有以水、油为载体的多元素共生资源;以水为载体的地热资源。因此,二元结构盆地中的石油和地层水除自身的资源价值以外,还有更有价值的多种元素的共生资源,在二元结构盆地中的石油和地层水是矿中矿,它们将是未来世纪新型工业———石油冶金工业和地下水冶金工业的重要资源。

关键词：火山活动油气资源地壳表层天然气资源二元结构盆地地球深部液态资源石油

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欠平衡钻水平井附加套管注气方式及关键技术

石油学报 2011年第2期32卷 350-354页

作者：杨虎王利国王峥王磊中国石油新疆油田公司勘探开发研究院重庆科技学院中国石油新疆油田公司石油工程监督中心

充气欠平衡钻井技术应用于水平井或大斜度井,将是拓展欠平衡钻井应用领域的重要方向之一。目前注气方式主要是钻柱注气和环空注气。采用钻柱注气方式,常规井下动力钻具和泥浆脉冲随钻测量工具无法正常工作,而现有的环空注气方式(如寄生... 详细信息

充气欠平衡钻井技术应用于水平井或大斜度井,将是拓展欠平衡钻井应用领域的重要方向之一。目前注气方式主要是钻柱注气和环空注气。采用钻柱注气方式,常规井下动力钻具和泥浆脉冲随钻测量工具无法正常工作,而现有的环空注气方式(如寄生套管、双层套管),由于成本高,技术问题多,应用不够广泛。由此,结合欠平衡钻井和水平井的理论和实践,提出了附加套管环空注气方式,并针对其关键技术进行理论分析和论证。该注气技术克服了钻柱注气的特殊问题,形成一套实用的环空注气欠平衡钻水平井技术。

关键词：欠平衡钻井水平井注气方式套管新型套管头