麻黄山西区块二维地震资料综合解释与圈闭评价
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摘要
应用二维地震资料,采用正反雷克子波对工区内14口井的侏罗系直罗组底(T4)等3个标志层进行了精细合成地震记录标定及构造解释,明确了研究区断裂及构造特征。西部断裂带逆断层发育,4条主断层由北向南延伸,中部被2条近东西向的调节断层剪切,主要圈闭类型为断背斜、断鼻、断块圈闭;东部地层平缓,断裂不发育,主要发育低幅度背斜圈闭。针对复杂地表条件,通过精细速度场的分析和建立,提高了T4,T5,T6构造图的精度,在综合评价的基础上提出了该区的勘探部署意见。
By using the Ricker wavelet of positive and negative frequencies in 2D seismic data,the calibration of accurate composite seismic traces and structural interpretation are conducted on three marker beds at the bottom of Jurassic Zhiluo Formation(T4)in 14 wells.The results show that reverse faults are developed in the western fractural area of the block;four main faults that extend from north to south are sheared by two E-W adjusting faults in the middle;the trap types are mainly faulted anticline,faulted nose,and faulted block.In its eastern part,strata are gentle and faults are not developed;trap type are mainly low-amplitude anticlines.Through the establishment and analyses of the accurate velocity field under the complicated surface conditions,the precision of structural maps of T4,Ts,and T6,is greatly enhanced.The proposals concerning the exploration strategy in the block are also put forward based on comprehensive evaluation.
By using the Ricker wavelet of positive and negative frequencies in 2D seismic data,the calibration of accurate composite seismic traces and structural interpretation are conducted on three marker beds at the bottom of Jurassic Zhiluo Formation(T4)in 14 wells.The results show that reverse faults are developed in the western fractural area of the block;four main faults that extend from north to south are sheared by two E-W adjusting faults in the middle;the trap types are mainly faulted anticline,faulted nose,and faulted block.In its eastern part,strata are gentle and faults are not developed;trap type are mainly low-amplitude anticlines.Through the establishment and analyses of the accurate velocity field under the complicated surface conditions,the precision of structural maps of T4,Ts,and T6,is greatly enhanced.The proposals concerning the exploration strategy in the block are also put forward based on comprehensive evaluation.
引文
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23陈传仁,周熙襄.一种精确层速度反演方法[J].物探化探计算技术,1999,21(3):212～215
24匡文忠.地震勘探原理[M].北京:电子科技大学出版社,2000
25邓怀群,刘雯林.横向各向同性介质中地震波旅行时的计算[J].石油地球物理勘探,2000,35(4):508～516
2陆基孟,任甲祥,郑清,等.地震勘探原理[M].山东东营:石油大学出版社,1993
3王军,刘小燕.高邮凹陷北斜坡辉绿岩区解释方法研究[J].石油物探,2004,43(2):163～166
4张永华,陈萍,赵雨晴,等.基于合成记录的综合层位标定技术[J].石油地球物理勘探,2004,38(1):93～96
5陆修莲,蒋戈平,范海林,等.复杂小断块油气藏滚动勘探开发研究[J].石油物探,2004,43(6):568～572
6张永华.三维地震资料综合解释方法探讨[J].石油物探,2004,43(1):49～53
7李红,谢秀祥.地震资料解释在东淮凹陷老区勘探中的应用研究[J].江汉石油学院学报,2003,25(1):53～55
8韩文功.地震剖面极性问题[J].石油地球物理勘探,1994,29(6):769～772
9赵重远.鄂尔多斯地块西缘构造构造演化及板块应力机制初探[A].见:内蒙古石油学会,编.鄂尔多斯盆地西缘地区石油地质论文集[C].内蒙古呼和浩特:内蒙古人民出版社,1983.20～28
10李振宏,张军,郑聪斌.鄂尔多斯盆地西缘断裂特征与油气运聚研究[J].石油物探,2005,44(3):246～250
11张进.鄂尔多斯西缘逆冲褶皱带构造特征及其南北差异的形成机制[J].地质学报,2004,78(5):600～611
12张抗,吴紫电.鄂尔多斯断块西缘断裂带的构造特征及含油气远景评价[J].石油与天然气地质,1985,6(1):71～80
13谢里夫R E,吉尔达特L P.勘探地震学[M].北京:石油工业出版社,1999
14李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1994.1～66
15 Russell B.A simple seismic imaging exercise[J].The Lead ingEdge,1998,19(7):885-889
16 Jones I F.3-D prestack depth migration and velocity model buil-ding[J].The Leading Edge,1998,19(7):899-906
17 ReshelM.The use of 3-D prestack depth imaging to estimate layervelocities and reflector positions[J].Geophysics,1997,62(1):206-210
18 Roden R.SEG Salt Lake city 2002[J].The Lead ing Edge,2003,22(2):141-162
19阎世信,刘怀山,姚雪根.山地地球物理勘探技术[M].北京:石油工业出版社,2000
20蔡玉华.达里亚工区速度体建立中几种网格化方法的对比分析[J].石油物探,1995,34(3):100～108
21 Whitmore N D,Garing J D.Interval velocity estimation using itera-tive prestack depth migration in the constant angle domain[J].The Leading Edge,1993,12(7):757-762
22邱荣华,孙耀华,张永华,等.泌阳凹陷新庄地区浅层三维地震勘探[J].石油与天然气地质,2005,26(2):242～245,262
23陈传仁,周熙襄.一种精确层速度反演方法[J].物探化探计算技术,1999,21(3):212～215
24匡文忠.地震勘探原理[M].北京:电子科技大学出版社,2000
25邓怀群,刘雯林.横向各向同性介质中地震波旅行时的计算[J].石油地球物理勘探,2000,35(4):508～516
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