三维地震资料在松辽盆地北部西部斜坡的应用
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摘要
近年来在松辽盆地北部西部斜坡区开展了5个区块的三维地震勘探,油气勘探取得重大突破。通过分析西部斜坡区二、三维地震在构造解释方面的差异及三维地震属性在储层预测中应用,进而对成藏有利区进行预测,最后对三维地震资料的应用效果进行评价。分析认为,西部斜坡区二、三维地震层位解释基本一致,只有个别层位地质意义有差别;三维地震取消和增加了多个断层,少量保留的断层在形态、延伸长度和搭接关系上差异较大;二、三维地震解释的局部构造差别较大,表现为圈闭平面位置变化、圈闭面积和幅度增加。PY工区32口井三维地震振幅属性符合率62.5%～71.9%,能够很好地用于储层预测。研究认为西部斜坡区成藏有利区应为构造有利区和砂体富集区的叠合部位。西部斜坡区三维地震资料应用效果显著,一是31口探评井振幅属性后验井符合率60%～84%,二是在西部斜坡区提交了超过6×10~7 t的石油地质储量,三是7口开发试验井钻井成功率100%。西部斜坡应加大三维地震勘探的力度。
In recent years, five blocks of 3D seismic exploration have been carried out in the western slope area of northern Songliao Basin, and great breakthroughs have been made in oil and gas exploration. Based on the analysis of the differences in structural interpretation between the 2D and 3D seismic data in the western slope and the application of 3D seismic attributes in reservoir prediction, the favorable areas for reservoir formation are predicted. Finally, the application effects of 3D seismic data are evaluated. It is concluded that the interpretation of the 2 D and 3D seismic formations in the western slope area is basically the same, and only the geological significance of individual formations is different. 3D seismic data cancels and increases many faults, and a small number of retained faults are different in shape, extension length and overlap relationship. The difference of local structures in 3D seismic interpretation is quite great, which is shown by the variation of trap plane position, the increase of trap area and amplitude. The coincidence rate of 3D seismic amplitude attribute of 32 wells in PY area is 62.5%～ 71.9%. It can be used well in reservoir prediction. It is considered that the favorable reservoir forming area in the western slope area should be the superposition of the tectonic favorable area and the sand body rich area. The application of 3D seismic data in the western slope area is remarkable. One is that the coincidence rates of the amplitude attributes of 31 exploration and evaluation wells are 60% ～ 84%, and the other is that more than 6×10~7 tons of petroleum geological reserves have been submitted in the western slope area. Third, the drilling success rate of 7 development test wells is 100%. The 3D seismic exploration should be strengthened on the western slope.
In recent years, five blocks of 3D seismic exploration have been carried out in the western slope area of northern Songliao Basin, and great breakthroughs have been made in oil and gas exploration. Based on the analysis of the differences in structural interpretation between the 2D and 3D seismic data in the western slope and the application of 3D seismic attributes in reservoir prediction, the favorable areas for reservoir formation are predicted. Finally, the application effects of 3D seismic data are evaluated. It is concluded that the interpretation of the 2 D and 3D seismic formations in the western slope area is basically the same, and only the geological significance of individual formations is different. 3D seismic data cancels and increases many faults, and a small number of retained faults are different in shape, extension length and overlap relationship. The difference of local structures in 3D seismic interpretation is quite great, which is shown by the variation of trap plane position, the increase of trap area and amplitude. The coincidence rate of 3D seismic amplitude attribute of 32 wells in PY area is 62.5%～ 71.9%. It can be used well in reservoir prediction. It is considered that the favorable reservoir forming area in the western slope area should be the superposition of the tectonic favorable area and the sand body rich area. The application of 3D seismic data in the western slope area is remarkable. One is that the coincidence rates of the amplitude attributes of 31 exploration and evaluation wells are 60% ～ 84%, and the other is that more than 6×10~7 tons of petroleum geological reserves have been submitted in the western slope area. Third, the drilling success rate of 7 development test wells is 100%. The 3D seismic exploration should be strengthened on the western slope.
引文
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[2] 付晓飞,王朋岩,吕延防,等.松辽盆地西部斜坡构造特征及对油气成藏的控制[J].地质科学,2007,42(2):209-222.
[3] 傅广.西斜坡区萨二、三油层油气运移优势路径及对成藏的作用[J].大庆石油学院学报,2005,29(6):1-3.
[4] 付晓飞,王朋岩,申家年,等.简单斜坡油气富集规律——以松辽盆地西部斜坡北段为例[J].地质论评,2006,52(4):522-531.
[5] 姚勇.江桥地区油藏地质特征与油气成藏主控因素[J].大庆石油地质与开发,2008,27(4):39-41.
[6] 王文广,高宁.西斜坡区萨二、三油层油气成藏机制[J].大庆石油学院学报,2006,30(1):1-3.
[7] 周庆华,吕延防,付广,等.松辽盆地北部西斜坡油气成藏模式和主控因素[J].天然气地球科学,2006,17(6):765-769.
[8] 王刘华.松辽盆地北部西斜坡萨尔图油层二砂组沉积微相研究[J].科学技术与工程,2012,12(9),2153-2156.
[9] 范增辉,刘树根,范存辉,等.龙门山褶皱冲断带典型地震剖面平衡剖面恢复及构造演化分析[J].地质论评,2018,64(2):347-360.
[10] 郑连弟,杨江峰,袁联生,等.哥伦比亚Llanos盆地东部油田Carbonera组C5段河道砂岩地震识别与预测[J].地质力学学报,2018,24(3):391-398.
[11] 陈胜红,米立军,施和生,等.海上一体化地震勘探技术在珠江口盆地东部恩平凹陷油气勘探中的应用[J].成都理工大学学报(自然科学版) ,2016,43(4):460-466.
[12] 杨涛涛,王彬,吕福亮,等.相干技术及其在西沙周缘深水区油气勘探中的应用[J].热带海洋学报,2013,32(3):16-21.
[13] 邹文海.葵南—龙王庙地区精细构造解释及地质分析[J].非常规油气,2018,5(05):43-48.
[14] 贺晓,焦健,许建权等.地震河道检测技术在鄂尔多斯盆地上古生界的应用[J].非常规油气,2015,2(02):22-26.
[15] 徐淑娟,赵泽辉,姜晓华等.松辽盆地中生代火山岩地球物理特征及分布预测[J].非常规油气,2016,3(03):27-34.
[16] 李永义.地震沉积学在有利砂体预测方面的应用——以三肇地区XS14区块扶余油层为例[J].长江大学学报(自科版),2018,15(11):9-14.
[17] 樊晓伊,姚光庆,杨振峰,等.准噶尔盆地车排子凸起多物源复杂沉积体系中的地震沉积学[J].地球科学,2018,43(3):786-801.
[18] 张鹏志,李兰斌.地震纹理分析在油气勘探中应用进展[J].物探与化探,2013,37(3):461-466.
[19] 高瑞祺,蔡希源,等.松辽盆地油田形成条件与分布规律[M].北京:石油工业出版社,1997.
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[21] 李如一.西斜坡泰康地区萨尔图油层油气分布规律研究[J].西部探矿工程,2016(3):38-40.
[22] 康德江,吕延防,付广,等.松辽盆地北部西斜坡区萨尔图(S)油层段储层特征研究[J].天然气地球科学,2005,16(5):592-598.
[23] 蒋鸿亮,张明学,霍玲.松辽盆地北部泰康地区萨尔图油层二、三砂组沉积微相特征[J].大庆石油学院学报,2006,30(3):14-16.
[24] 卓弘春,林春明,冯志强,等.松辽盆地北部上白垩统青山口—姚家组沉积相及层序地层界面特征[J].沉积学报,2007,25(1):29-38.
[25] 胡晓兰,樊太亮,张晓龙,等.松辽盆地北部西斜坡姚家组SⅡ+Ⅲ砂组物源分析及沉积微相[J].吉林大学学报(地球科学版),2011,41(3):647-656.
[26] 徐德英,梁江平,辛仁臣.松辽盆地北部西斜坡嫩江组一段S1砂组沉积体系分析[J].石油天然气学报,2011,33(6):11-15.
[27] 邱春光,刘延莉.松辽盆地西斜坡萨尔图油层组隐蔽油气藏成藏因素分析[J].特种油气藏,2011,18(1):36-39.
[28] 王刘华.松辽盆地北部西斜坡萨尔图油层二砂组沉积微相研究[J].科学技术与工程,2012,12(9):2153-2156.
[29] 姜涛,辛仁臣.松辽盆地北部西部斜坡姚家组四级层序格架沉积微相分布.东北石油大学学报,2015,39(1):32-41.
[30] 孙效东,路万强,杨玉峰.松辽盆地北部西部斜坡稠油的来源分析[J].大庆石油学院学报,2004,28(4):1-2.
[31] 邹才能,王兆云,徐冠军,等.松辽盆地西斜坡稠油特征及成因[J].沉积学报,2004,22(4):701-706.
[32] 张维琴,杨玉峰.松辽盆地西部斜坡油气来源与运移研究[J].大庆石油地质与开发,2005,24(1):17-19.
[33] 付广,于丹,孟庆芬.西斜坡区萨二、三油层油气运移特征及对成藏的作用[J].油气地质与采收率,2005,12(4):39-42.
[34] 孙建国,付广,刘江涛.西斜坡区萨二、三油层油气运移路径及其主控因素[J].大庆石油地质与开发,2006,25(5):27-30.
[35] 向才富,夏斌,解习农,等.松辽盆地西部斜坡带油气运移主输导通道[J].石油与天然气地质,2004,25(2):204-208.
[36] 张庆石,于丹,李君文.松辽盆地西部斜坡区萨尔图油层油气分布特征及控制因素[J].大庆石油地质与开发,2013,32 (5):17-21.
[37] 陆基孟,王永刚.地震勘探原理[M].山东东营:中国石油大学出版社,2009.
[38] 吴胜和.储层表征与建模[M].北京:石油工业出版社,2010.
[39] 赵正璋,赵贤正,王英民.储层地震预测理论与实践[M].北京:科学出版社,2005.
[40] 蒙启安,赵波,梁江平,等.源外斜坡区油气成藏要素研究——以松辽盆地北部西部斜坡区为例[J].地质学报,2014,88(3):433-446.
[41] 于丹.松辽盆地西部斜坡区北段坳陷层构造与油气成藏关系[J].大庆石油地质与开发,2012,31(6):6-10.
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