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Oil-source rock correlation and quantitative assessment of Ordovician mixed oils in the Tazhong Uplift, tarim Basin

petroleum Science 2010年第2期7卷 179-191页

作者： Li Sumei Pang Xiongqi Zhang Baoshou Xiao Zhongyao Gu Qiaoyuan State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum Beijing 102249 China tarim oilfield company PetroChina Korla Xinjiang 841000 China

The origin of the marine oils in the tarim Basin has long been a disputed topic. A total of 58 DST （drill stem test） crude oil and 8 rock samples were investigated using a comprehensive geochemical method to characterize and identify the origin of the Ordovician oils in the Tazhong Uplift, tarim Basin, northwest china. Detailed oil–oil and oil–source rock correlations show that the majority of the oils have typical biomarker characteristics of the Middle-Upper Ordovician （O2＋3） source rock and the related crude oil. These characteristics include a distinct ＂V-shaped＂ relative abundance of C27, C28 and C29 regular steranes, low abundance of dinosterane, 24-norcholestanes, triaromatic dinosteroids and gammacerane. Only a few oils display typical biomarker characteristics indicating the Cambrian–Lower Ordovician （∈-O1） genetic affinity, such as linear or anti ＂L＂ shape distribution of C27, C28 and C29 regular sterane, with relatively high concentrations of dinosterane, 24-norcholestanes, triaromatic dinosteroids and gammacerane. It appears that most of the Ordovician oils in the Tazhong Uplift were derived from the O2＋3 intervals, as suggested by previous studies. However, the compound specific n-alkane stable carbon isotope data indicate that the Ordovician oils are mixtures from both the ∈-O1 and O2＋3 source rocks rather than from the O2＋3 strata alone. It was calculated that the proportion of the∈-O1 genetic affinity oils mixed is about 10.8%-74.1%, with an increasing trend with increasing burial depth. This new oil-mixing model is critical for understanding hydrocarbon generation and accumulation mechanisms in the region, and may have important implications for further hydrocarbon exploration in the tarim Basin.

关键词： Biomarker compound specific isotope oil–source rock correlation mixed oil

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Controlling Factors Affecting Pressure Differential development of the Upper Paleozoic Gas Reservoir in the Sulige and Yulin Area of the Ordos Basin

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地学前缘 2009年第S1期16卷 126-127页

作者： Hao Xu~1,Junfeng Zhang~2,Chengzao Jia~3,Dazhen Tang~1,Ming Li~3,Wenzhong Zhang~1 1.Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism,Ministry of Education,china University of Geosciences(Beijing),Beijing 100083,china. 2.petrochina exploration and Production company,Beijing 100724,china 3.research institute of petroleum exploration & development,Beijing 100083,china

The origin and distribution of Upper Paleozoic reservoirs pressure in mid-northem Ordos Basin has attracted widespread attention in recent *** reservoir pressure of Sulige area shows characteristics of basically subnormal pressure,and the reservoir pressure of Yulin area shows characteristics of basically normal hydrostatic *** the sense of structural location,

关键词： Ordos Basin Sulige area Yulin area formation pressure controlling factors

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欠平衡钻水平井附加套管注气方式及关键技术

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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

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松辽盆地岩性油藏形成条件与分布规律

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石油与天然气地质 2004年第4期25卷 393-399页

作者：杨玉峰中国石油石油勘探开发研究院

松辽盆地中浅层大型坳陷湖盆河流-三角洲、湖泊沉积体系形成的砂泥岩薄互层决定了其具有形成大面积岩性油藏的地质条件。纵向上,由于各时期基准面升降造成可容空间在不同时期差别较大,因此发育的砂体类型也有一定的差别。由于储层埋藏... 详细信息

松辽盆地中浅层大型坳陷湖盆河流-三角洲、湖泊沉积体系形成的砂泥岩薄互层决定了其具有形成大面积岩性油藏的地质条件。纵向上,由于各时期基准面升降造成可容空间在不同时期差别较大,因此发育的砂体类型也有一定的差别。由于储层埋藏深度以及与烃源岩的相对位置不同,各含油组合岩性油藏成藏条件与分布规律也存在一定的差异。断层在岩性油藏成藏过程中起很重要的作用,它一方面是形成断层-岩性复合圈闭的主要要素,同时又是油气进入岩性圈闭成藏的主要运移通道。平面上,岩性油藏的类型受构造部位和砂岩的发育程度控制。凹陷中三角洲外前缘相带主要形成岩性油藏,凹陷周边是各种隐蔽油气藏发育的主要地区。

关键词：中、浅层岩性油藏主控因素分布规律松辽盆地

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Designing and Understanding of Fire Flooding in the later Phase of CSS in Heavy Oil Reservoir

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china Oil & Gas 2011年第4期18卷 20-23页

作者： Sun Hongjun,Gao Fei,Hu Shiqing,Gong Yuning(exploration & development research institute of Liaohe oilfield company,petrochina)

Block G is a deeper thick-massive heavy oil *** is developed in 1986 by cyclic steam *** 22 years development,it's reservoir pressure and oil production rate become lower and lower,production cost higher and higher,it is getting into the low-yielding and inefficient produced stage,urgently needing to search for more efficient mining technology to further enhance oil *** G is special-super deep heavy oil reservoir and its reservoir depth is 1540-1890m,which don't suit for steam flooding and SAGD ***-situ combustion technology has a wide range of *** on the characteristics of Block G that under large dip angle/thick layer,according to the parameters of fire *** flooding pilot test started in May 2008,obtained obvious effect of increasing *** there were a lot of problems,such as combustion front overlapping,injected air monolayer and one-way breakthrough,the swept efficiency decreases with combustion front improving,The paper analysis the pilot production and exited problem,and provide reference for next adjustment of Block G and fire flooding in the same type of reservoir.

关键词：稠油油藏 CSS 后期消防设计 SAGD技术燃烧技术储层压力

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THE PRESSURE TRANSIENT ANALYSIS OF DEFORMATION OF FRACTAL MEDIUM

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Journal of Hydrodynamics 2008年第3期20卷 306-313页

作者： ZHANG Yi-gen TONG Deng-ke institute of Mechanics Chinese Academy of Sciences Beijing 100080 China research institute of Geological Sciences Shengli Oilfield Company Sinopec Dongying 257015 China School of Mathematics and Computational Sciences China University of Petroleum （East China） Dongying257061 China

The assumption of constant rock properties in pressure-transient analysis of stress-sensitive reservoirs can cause significant errors in the estimation of temporal and spatial variation of pressure. In this article, the pressure transient response of the fractal medium in stress-sensitive reservoirs was studied by using the self-similarity solution method and the regular perturbation method. The dependence of permeability on pore pressure makes the flow equation strongly nonlinear. The nonlinearities associated with the governing equation become weaker by using the logarithm transformation. The perturbation solutions for a constant pressure production and a constant rate production of a linear-source well were obtained by using the self-similarity solution method and the regular perturbation method in an infinitely large system, and inquire into the changing rule of pressure when the fractal and deformation parameters change. The plots of typical pressure curves were given in a few cases, and the results can be applied to well test analysis.

关键词： stress-sensitive reservoir fractal permeability modulus pressure analysis

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模糊数学在压裂设计中的应用

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天然气工业 1998年第3期18卷 61-64页

作者：蒋廷学田占良中国石油天然气总公司石油勘探开发科学研究院廊坊分院华北石油管理局二连石油勘探开发公司

将模糊数学的有关原理，系统地应用于压裂（包括复压）的选井选层、部分关键设计参数的研究和确认以及最终压裂方案的优化决策中。在紧密结合现场实际的基础上，综合考虑了多种影响因素并将其量化，因此较以往的单因素分析法更为合理。... 详细信息

将模糊数学的有关原理，系统地应用于压裂（包括复压）的选井选层、部分关键设计参数的研究和确认以及最终压裂方案的优化决策中。在紧密结合现场实际的基础上，综合考虑了多种影响因素并将其量化，因此较以往的单因素分析法更为合理。此外，在权重的确定上，尝试应用了灰色理论中的灰色关联度法，将模糊数学与灰色理论有机地结合起来，得出的权重结果基本符合经验判断。本文的三部分研究内容，前后相接，构成一项系统工程。研究方法简单适用，现场可操作性强。研究结果经矿场实例验证及其它可靠手段检测，可信度较高，并已获得了较好的经济效益。

关键词：模糊数学油气井压裂设计参数优选灰色系统

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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 institute 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 development 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

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吉林油田庙130区块水平井稳产数值模拟

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新疆石油地质 2011年第4期32卷 382-384页

作者：赵静中国石油吉林油田分公司勘探开发研究院吉林松原138000

针对吉林油田庙130区块油藏特点,利用Eclipse油藏描述-数值模拟一体化软件,预测了区块的储集层物性分布,真实反映出该区块储集层孔隙度、渗透率、含油饱和度变化情况。针对该区块产量下降快、含水率上升的特点,设计出4套开发方案,并对... 详细信息

针对吉林油田庙130区块油藏特点,利用Eclipse油藏描述-数值模拟一体化软件,预测了区块的储集层物性分布,真实反映出该区块储集层孔隙度、渗透率、含油饱和度变化情况。针对该区块产量下降快、含水率上升的特点,设计出4套开发方案,并对不同方案进行开发指标预测。预测结果表明,方案4含水率最低,采出程度最高,地层压力最稳定,为最佳开发方案。

关键词：吉林油田庙130区块数值模拟方案设计开发指标

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UNSTEADY FLOW OF NON-NEWTONIAN VISCO-ELASTIC FLUID IN DUAL-POROSITY MEDIA WITH THE FRACTIONAL DERIVATIVE

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Journal of Hydrodynamics 2009年第5期21卷 705-713页

作者： SHAN Lian-tao TONG Deng-ke XUE Li-li School of petroleum Engineering China University of Petroleum Dongying 257061 China research institute of Geological Sciences Shengli Oilfield Company Sinopec Dongying 257015 School of Mathematics and Computational Sciences China University of Petroleum Dongying 257061 China

The fractional order derivative was introduced to the seepage flow research to establish the relaxation models of non-Newtonian viscoelastic fluids in dual porous media. The flow characteristics of non-Newtonian viscoelastic fluids through a dual porous medium were studied by using the Hankel transform, the discrete Laplace transform of sequential fractional derivatives and the generalized Mittag-Leffler function. Exact solutions were obtained for arbitrary fractional order derivative. The long-time and short-time asymptotic solutions for an infinite formation were also resulted. The pressure transient behavior of non-Newtonian viscoelastic fluids flow through an infinite dual porous media was studied by using Stehfest＇s inversion method of the numerical Laplace transform. It shows that the characteristics of the fluid flow are appreciably affected by the order of the fractional derivative.

关键词： fractional calculus non-Newtonian visco-elastic fluids dual porous media exact solution

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