东濮凹陷卫城地区沙河街组油气目标综合评价
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摘要
卫城油田位于东濮凹陷中央隆起带的北部,紧邻濮—卫生油次洼,具有丰富的油源条件。断裂活动形成的一系列断块圈闭是油气聚集的有利场所,是东濮凹陷有利的油气聚集区之一。卫城油田发育卫东、卫西两大断裂体系,内部小断层十分发育,断层多且密集,属于典型的复杂断块油气藏。在卫城构造垒带,由于埋藏较深(2500～3000m),地层倾角较大(30°±),受地层和构造的双重影响,地震资料的品质较差,给在该区的油气勘探带来了很大的困难。针对卫城地区小断层发育,构造复杂的地质特点以及地震资料品质比较差的情况,采取以构造精细研究为重点,在利用三维地震资料为主的基础上,充分应用测井,钻井,高精度地层倾角资料以及生产动态资料,通过三维地震构造精细解释技术及多种方法识别小断层技术,对卫城地区的构造形态、低序级断层的发育及剖面和平面组合规律以及断层的封堵模式进行了深入分析和认识,提高了对该地区小断层、小断块和小油藏的认识。通过岩电关系研究,分析储层物性与含油气性与测井响应之间的关系,绘制各种图版,重新建立了卫城油田从沙一段到沙四段各油层的电性解释标准,从成因上分析了沙三上低电阻油层的形成机理及解释标准。在对卫城地区的地层、构造、储层、油气藏类型以及油气聚集规律认识的基础上,分四个次一级构造带对16个目标区进行了油气勘探目标评价,并优选了有利目标进行评价钻探,取得了较好的效果,将为卫城油田的油气勘探开发工作做出了积极的贡献。
Weicheng oil field is situated at the north of central uplift belt of Dongpu depression, adjacent to the Pu-Wei petroleum-generation sub-depression, in which abundant oil and gas resource occurs. It is also the favorable oil & gas accumulation area of Dongpu depression owing to a series of fault traps formed by rift structure. Weicheng oil field developed two fault systems (Weidong and Weixi fault systems), and in which many and dense little faults developed. It belongs to the typical complex fault-block reservoir. In Weicheng horst structure, because of deep buried and high dip angle, and influenced by strata and structure, oil and gas exploration is faced with great difficulty. In view of the geological feature of developed little faults and complex structure and poor seismic data in Weicheng area, based on 3-D seismic data, focused on the research of structure, comprehensive application of logging, drilling, high resolution dip data and production data, through the technology of 3-D structural interpretation and muti-method recognizing fault, tectonic form development of little fault and combination regualrity of flat and section and sealing pattern of fault are deeply analyzed and studied. And the identification level of little fault, little fault-block and little oil reservoir is improved. Through the study of rock-electricity and the relation of reservoir physical property, oiliness and log response, all kinds of charts have been drawn, the log interpretation criterion from Es1-Es4 in Weicheng oil field has been rebuilt, and the generation mechanism and interpretation criterion of low-resistance oil reservoir has been analyzed as well. Finally, based on the comprehensive study of strata, structure, reservoir, type of oil & gas pool and hydrocarbon accumulation, sixteen prospect targets from divided four sub-tectonic zones have been evaluated, and optimized favorable targets have been drilled and good results received, which makes tremendous contribution for the oil & gas exploration and development in Weicheng oil field.
Weicheng oil field is situated at the north of central uplift belt of Dongpu depression, adjacent to the Pu-Wei petroleum-generation sub-depression, in which abundant oil and gas resource occurs. It is also the favorable oil & gas accumulation area of Dongpu depression owing to a series of fault traps formed by rift structure. Weicheng oil field developed two fault systems (Weidong and Weixi fault systems), and in which many and dense little faults developed. It belongs to the typical complex fault-block reservoir. In Weicheng horst structure, because of deep buried and high dip angle, and influenced by strata and structure, oil and gas exploration is faced with great difficulty. In view of the geological feature of developed little faults and complex structure and poor seismic data in Weicheng area, based on 3-D seismic data, focused on the research of structure, comprehensive application of logging, drilling, high resolution dip data and production data, through the technology of 3-D structural interpretation and muti-method recognizing fault, tectonic form development of little fault and combination regualrity of flat and section and sealing pattern of fault are deeply analyzed and studied. And the identification level of little fault, little fault-block and little oil reservoir is improved. Through the study of rock-electricity and the relation of reservoir physical property, oiliness and log response, all kinds of charts have been drawn, the log interpretation criterion from Es1-Es4 in Weicheng oil field has been rebuilt, and the generation mechanism and interpretation criterion of low-resistance oil reservoir has been analyzed as well. Finally, based on the comprehensive study of strata, structure, reservoir, type of oil & gas pool and hydrocarbon accumulation, sixteen prospect targets from divided four sub-tectonic zones have been evaluated, and optimized favorable targets have been drilled and good results received, which makes tremendous contribution for the oil & gas exploration and development in Weicheng oil field.
引文
[1] 郭秋麟,米石云.油气勘探目标评价与决策分析[M]. 北京:石油工业出版社,2004,4-5
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[13] 杨春峰,张 宏,田小敏,等. 相干数据体处理技巧及在精细构造解释中的应用[J].石油物探,2004,43(增):107-109
[14] 王大伟,刘 震,陈小宏,等. 地震相干技术的进展及其在油气勘探中的应用[J].地质科技情报,2005,24(2):71-76
[15] 崔若飞,赵爱华.利用模式识别方法解释微小断层[J].中国矿业大学学报, 1995,30(4):556-566
[16] 李国欣,欧阳健,周灿灿.中国石油低阻油层岩石物理研究与测井识别评价技术进展[J].中国石油勘探,2006,2:43-44
[17] 赵政璋, 杜金虎,牛嘉玉,等.渤海湾盆地“中石油”探区勘探形势与前景分析[J]. 中国石油勘探,2005, 10(3):1-7
[18] 杨飞.应用模糊数学预测塔里木盆地有利圈闭[J].成都理工学院学报,1997,24(1): 30
[19] 杨昌明,王美丽,聂新坤.圈闭地质评价中模糊数学综合评判法的优势[J].西南石油学院学报,1999,21(2): 41
[20] 陈守余,周梅春. 人工神经网络模拟实现与应用[J]. 武汉: 中国地质大学出版社,2000,2-20
[21] 徐景祯,陈章明,刘晓冬.圈闭地质综合评价的专家系统模型[J].石油学报,1997,18(3): 23-24
[22] 张二华,吴克强,范土芝.圈闭灰色聚类地质评价[J].地质科技情报,1999,18(2): 49-50
[23] 石骁,赵庆飞.基于粗糙集理论的模糊综合评判权值确定[J].西南石油学院学报,2001,23(3): 16
[24] 孙建孟,王永刚.地球物理资料综合应用[M].东营:石油大学出版社,2001,44-54
[25] P. V. Reddy,S. K. Malasi, R. K. Pathak.Prospect delineation of sand pay zone from 3D-seismic amplitude analysis; a case study from upper Assam Field[J].Geological Survey of India,1999, 49: 247-254
[26] Jay Thorseth, Greg Riley, Erkan Atalik, Ersin Us.3-D seismic interpretation using the coherency cube—an example from the South Embra Precaspian Basin, Kazakhstan[J].The Leading Edge, Jun 1997, 16: 907 - 909
[27] Mike Bahorich ,Steve Farmer.3-D seismic discontinuity for faults and stratigraphic features; the coherence cube[J].The Leading Edge, Oct 1995; 14: 1053-1058
[28] Satinder Chopra, Vasudhaven Sudhakar.Fault interpretation; the coherence cube and beyond[J].Oil and Gas Journal,July 2000,98(31): 71-74
[29] Victor H. Vega, Greg Partyka, Christopher J. Christensen et al.Jonah Field area; seismiccoherency cube technology used to define trap boundaries and stratigraphic features[J].The Bulletin of the Houston Geological Society ,Feb 2003,45(6): 21-25
[30] Mauro De Donatis.Three-Dimensional Visualization of the Neogene Structures of an External Sector of the Northern Apennines, Italy[J].AAPG Bulletin, Mar 2001, 85: 419 - 431
[31] Scott W. Tinker .From rocks to models; three-dimensional visualization as a tool to integrate sedimentology and sequence stratigraphy into reservoir models[J].AAPG Bulletin,November 1997,81(11): 1955-1956
[32] Zhuoheng Chen ,Kirk G. Osadetz.Geological risk mapping and prospect evaluation using multivariate and Bayesian statistical methods, western Sverdrup Basin of Canada[J].AAPG Bulletin, Jun 2006, 90: 859 – 872
[2] 刘泽容,信荃麟,邓俊国,等.断块群油气藏形成机制和构造模式[M].北京:石油工业出版社,1998,40-92
[3] 赵澄林,朱筱敏. 沉积岩石学[M].北京:石油工业出版社,2001,37-91
[4] 戴启德,纪友亮.油气储层地质学[M].山东东营:石油大学出版社,1996,138-151
[5] 欧阳健,王贵文,吴继余,等.测井地质分析与油气层定量评价[M].北京:石油工业出版社,1999,52-66
[6] 蔡希源,宋国奇,李思田,等.陆相盆地高精度层序地层学(技术方法篇)[M].北京:地质出版社.2004,210-217
[7] 蔡希源,李思田,宋国奇,等.陆相盆地高精度层序地层学(基础理论篇)[M].北京:地质出版社.2004,215-220
[8] 杨广林,王波,袁杰.卫东深层油气滚动勘探开发技术研究[R].中原油田分公司勘探开发研究院.2003,1-10
[9] 张幸福,周嘉玺.陆相复杂断块油田精细油藏描述技术[M].北京:石油工业出版社,2001
[10] 王贵文,郭荣坤.测井地质学[M].北京:石油工业出版社.2000,1-49
[11] 许化政,周新科,高正虹.我国油气地质理论的发展与思考[J].石油科技论坛,2006(2):9-10
[12] 余德平,曹辉,王咸彬,等.相干数据体及其在三维地震解释中的应用[J].石油物探,1998,37(4):75-79
[13] 杨春峰,张 宏,田小敏,等. 相干数据体处理技巧及在精细构造解释中的应用[J].石油物探,2004,43(增):107-109
[14] 王大伟,刘 震,陈小宏,等. 地震相干技术的进展及其在油气勘探中的应用[J].地质科技情报,2005,24(2):71-76
[15] 崔若飞,赵爱华.利用模式识别方法解释微小断层[J].中国矿业大学学报, 1995,30(4):556-566
[16] 李国欣,欧阳健,周灿灿.中国石油低阻油层岩石物理研究与测井识别评价技术进展[J].中国石油勘探,2006,2:43-44
[17] 赵政璋, 杜金虎,牛嘉玉,等.渤海湾盆地“中石油”探区勘探形势与前景分析[J]. 中国石油勘探,2005, 10(3):1-7
[18] 杨飞.应用模糊数学预测塔里木盆地有利圈闭[J].成都理工学院学报,1997,24(1): 30
[19] 杨昌明,王美丽,聂新坤.圈闭地质评价中模糊数学综合评判法的优势[J].西南石油学院学报,1999,21(2): 41
[20] 陈守余,周梅春. 人工神经网络模拟实现与应用[J]. 武汉: 中国地质大学出版社,2000,2-20
[21] 徐景祯,陈章明,刘晓冬.圈闭地质综合评价的专家系统模型[J].石油学报,1997,18(3): 23-24
[22] 张二华,吴克强,范土芝.圈闭灰色聚类地质评价[J].地质科技情报,1999,18(2): 49-50
[23] 石骁,赵庆飞.基于粗糙集理论的模糊综合评判权值确定[J].西南石油学院学报,2001,23(3): 16
[24] 孙建孟,王永刚.地球物理资料综合应用[M].东营:石油大学出版社,2001,44-54
[25] P. V. Reddy,S. K. Malasi, R. K. Pathak.Prospect delineation of sand pay zone from 3D-seismic amplitude analysis; a case study from upper Assam Field[J].Geological Survey of India,1999, 49: 247-254
[26] Jay Thorseth, Greg Riley, Erkan Atalik, Ersin Us.3-D seismic interpretation using the coherency cube—an example from the South Embra Precaspian Basin, Kazakhstan[J].The Leading Edge, Jun 1997, 16: 907 - 909
[27] Mike Bahorich ,Steve Farmer.3-D seismic discontinuity for faults and stratigraphic features; the coherence cube[J].The Leading Edge, Oct 1995; 14: 1053-1058
[28] Satinder Chopra, Vasudhaven Sudhakar.Fault interpretation; the coherence cube and beyond[J].Oil and Gas Journal,July 2000,98(31): 71-74
[29] Victor H. Vega, Greg Partyka, Christopher J. Christensen et al.Jonah Field area; seismiccoherency cube technology used to define trap boundaries and stratigraphic features[J].The Bulletin of the Houston Geological Society ,Feb 2003,45(6): 21-25
[30] Mauro De Donatis.Three-Dimensional Visualization of the Neogene Structures of an External Sector of the Northern Apennines, Italy[J].AAPG Bulletin, Mar 2001, 85: 419 - 431
[31] Scott W. Tinker .From rocks to models; three-dimensional visualization as a tool to integrate sedimentology and sequence stratigraphy into reservoir models[J].AAPG Bulletin,November 1997,81(11): 1955-1956
[32] Zhuoheng Chen ,Kirk G. Osadetz.Geological risk mapping and prospect evaluation using multivariate and Bayesian statistical methods, western Sverdrup Basin of Canada[J].AAPG Bulletin, Jun 2006, 90: 859 – 872