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CO_2含量对火山岩气藏开发指标的影响

天然气工业 2011年第8期31卷 69-72,135页

作者：苏云河汤勇肖云宋海敬张小涛中国石油勘探开发研究院廊坊分院 "油气藏地质及开发工程"国家重点实验室.西南石油大学中国石油塔里木油田公司开发事业部中国石油西南油气田公司勘探开发研究院

由于CO2气体与常规天然气性质存在较大差异,使得富含CO2的气藏与常规气藏相态特征不同,导致CO2含量影响气藏的开发指标的变化。为此,以校正过相态的计算模型为基础,研究了等温条件下不同CO2含量天然气相态变化特征、不同温度下含CO2天... 详细信息

由于CO2气体与常规天然气性质存在较大差异,使得富含CO2的气藏与常规气藏相态特征不同,导致CO2含量影响气藏的开发指标的变化。为此,以校正过相态的计算模型为基础,研究了等温条件下不同CO2含量天然气相态变化特征、不同温度下含CO2天然气相态变化特征及相态变化对开发指标的影响。结果认为:无论是气藏渗流还是井筒流动过程中,富含CO2的火山岩气藏的相态计算都必须考虑偏差因子、黏度和密度随CO2含量的变化;在压力小于3. MPa时,井筒流动要考虑体积系数的变化;气藏的稳产期、稳产期末采出程度和预测期末采出程度随CO2含量的增加不断降低。该研究成果对富含CO2天然气藏的开发具有指导意义。

关键词：火山岩气藏 CO2 含量相态状态方程开发指标影响因素

Geochemical study on oil-cracked gases and kerogen-cracked gases (Ⅱ)——Discrimination methods between oil-cracked gases and kerogen-cracked gases

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Science china Earth Sciences 2009年第S1期52卷 10-18页

作者： HUANG GuangHui1,2,ZHANG Min1,2,HU GuoYi3.& XIAO ZhongYao4 1 Department of Geochemistry,Yangtze University,Jingzhou 43.023.china 2 Key Laboratory of exploration Technologies for Oil and Gas Resources,Ministry of Education,Jingzhou 43.023.china 3.{3. Institute of Petroleum exploration and development,petrochina,Beijing 100083.china 4 tarim Oil Field Branch company,CNPC,Korle 841000,china

In the processes of discrimination between oil-cracked gases and kerogen-cracked gases,Behar and Pinzgofer et al.'s results were adopted in the former researches,in which the ratio of C2/C3.is basically a constant while the ratio of C1/C2 gradually increases in the course of primary cracking of kerogen. Otherwise in the course of secondary cracking of oil,the ratio of C2/C3.increases rapidly while C1/C2 keeps relatively stable. Our study on analogue experiment shows that,whether it is oil or kerogen,in its process of gas generating by cracking,the ratios of C2/C3.C1/C2 or C1/C3.will all be increased with the growth of thermal conditions. In comparison,the ratio of C2/C3.which is affected by genetic type to some comparatively less extent,mainly responds to the maturity of gases,while the value of C2/C3.is about 2,and that of C2/iC4 is about 10,and the corresponding value of Ro is about 1.5%―1.6%. The influence of gas source on C2/C3.is less than that of gas maturity,otherwise C1/C2(or C1/C3. is obviously affected by cracking matrices. The ratios of C1/C2,C1/C3.of oil-cracked gases are less than that of kerogen-cracked gases,under the condition that the ratios of C2/C3.are similar in value,so are the value of dryness indexes. There exists wide diffidence between this view and the former discrimination method in theory. The analysis of the spot sample indicates that we can apply the above basic view to dealing efficiently with the problem of the discrimination between oil-cracked gas and kerogen-cracked gas.

关键词： tarim Basin oil-cracked gases kerogen-cracked gases discrimination methods gas composition

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

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 {3. 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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松辽盆地岩性油藏形成条件与分布规律

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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塔里木盆地满西区块强制海退体系域沉积模式

石油学报 2003年第4期24卷 21-25页

作者：吴因业顾家裕 CedricG 王招明申银民中国石油勘探开发研究院北京100083 澳大利亚CSIRO石油资源部新疆塔里木油田分公司新疆库尔勒841000

构造运动、全球海平面变化和气候的相互作用控制了沉积物供给量以及可容空间被充填的规模。在强制海退情况下的缓坡边缘上 ,相对海平面下降期间过路沉积物未被输送到盆底 ,而被沉积为一组逐级下降的前积楔 ,形成强制海退体系域。塔里木... 详细信息

构造运动、全球海平面变化和气候的相互作用控制了沉积物供给量以及可容空间被充填的规模。在强制海退情况下的缓坡边缘上 ,相对海平面下降期间过路沉积物未被输送到盆底 ,而被沉积为一组逐级下降的前积楔 ,形成强制海退体系域。塔里木盆地满西区块的东河砂岩等时段是基于东河砂岩段上部和下部所存在的层序界面 (不整合面 )而划分的 ,具有等时性 ,但岩性、岩相在不同位置、不同地区会有变化。东河砂岩等时段所属的层序SQ 1的层序界面是海平面长期下降的结果 ,并受到构造运动的加强作用 ,表现为一个盆地范围内广泛发育的不整合面。层序SQ 1的发育演化明显受到海平面变化的控制 :在海平面快速上升时期发育海侵体系域 ;在海平面缓慢下降时期发育强制海退体系域。满西地区的东河砂岩是强制海退体系域的沉积产物 ,是在海退背景下发育的复合砂体 ,其展布非常复杂 ,多数呈点状或块状展布。层序SQ1的油气储集体主要分布于海岸带附近 ,它们是前滨—临滨沉积砂体。

关键词：塔里木盆地层序地层学沉积体系海退体系域沉积模式油气聚集

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吉林油田庙13.区块水平井稳产数值模拟

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13.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13.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13.区块数值模拟方案设计开发指标

Theoretical analysis of microscopic oil displacement mechanism by viscoelastic polymer solution

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Theoretical & Applied Mechanics Letters 2011年第2期1卷 52-55页

作者： Yuhu Bai,~(1,2,a) Xiansong Zhang,~(1,2)and Guoshi Zhao~3.1.State Key Laboratory of Offshore Oil Exploitation,Beijing 100027,china 2.china National Offshore Oil Corporation research Institute,Beijing 10027,china 3.No.8 Oil Production Plant,Daqing oilfield Limited company,petrochina,Daqing 163.14,china State Key Laboratory of Offshore Oil Exploitation Beijing 100027 China china National Offshore Oil Corporation research Institute Beijing 10027 China No. 8 Oil Production Plant Daqing Oilfield Limited Company PetroChina Daqing 163514 China

The microscopic oil displacement mechanism in viscoelastic polymer flooding is theoretically analyzed with mechanical *** effects of viscoelasticity of polymer solution on such three kinds of residual oil as in pore throat,in sudden expansion pore path,and in dead end are *** show that the critical radius of mobile residual oil for viscoelastic polymer solution is larger than that for viscous polymer solution,which makes the oil that is immobile in viscous polymer flooding displaced under the condition of viscoelastic polymer *** viscous polymer solution hardly displaces the oil in dead ***,when the effect of viscoelasticity is considered,the residual oil in sudden expansion pore paths and dead ends can be partly displaced. A dimensionless parameter is suggested to denote the relative dominance of gravity and capillary *** larger the dimensionless parameter,the more accurate the increment expressions.

关键词： polymer solution viscoelasticity residual oil dimensionless parameter

Geochemical characteristics of Jurassic coal and significance for the evolution of the environment, Yanqi Basin, china

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Progress in Natural Science:Materials International 2006年第9期16卷 974-982页

作者： WU Chaodong , XU Youling, GUO Zhaojie1, QUAN Shujin, LI Yonglin and FENG Xue ( Key Laboratory of Orogenic Belts and Crustal Evolution of Department of Education, Peking University, Beijing 100871, china 3.d Geological Survey Brigade, Henan Bureau of Mineralogical and Resources, Xinyang 476000, china exploration & {3. research Institute of Henan oilfield, SINOPEC, Nanyang 473.3., china) [a]Key Laboratory of Orogenic Belts and Crustal Evolution of Department of Education Peking University Beijing China [b]3.d Geological Survey Brigade Henan Bureau of Mineralogical and Resources Xinyang China [c]exploration & development research Institute of Henan {3. SINOPEC Nanyang China

The Mesozoic strata of the Yanqi Basin consists of coarse debris with coal beds, characterized by the developments of coal seams of the Jurassic sediments whose main petrologic contents are glutenite, fine sandstone, mudstone, carbonaceous shale and coal. Based on the analyses of the minerals, trace elements and REEs, we try to find geochemical characteristics of the coal seam formation process. The analysis results indicate that the contents of ash and sulfur are low while the content of phosphor is comparatively high, and that the specific value of Al2O3.SiO2 is relatively high and that of (Al2O3.+ SiO2)/(Fe2O3.+ CaO+ MgO) is near 1. All these results indicate that the coal seams are formed in the relatively deep marsh, which is favorable for the evolvement of hydrocarbon at the diagenesis stage.

关键词： coal sedimentary geochemistry trace elements Jurassic.