The application of OVT domain processing technology in deep CBM exploration in Qinshui Basin
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摘要: 沁水盆地中东部煤层埋深大（大于1 000 m）、煤储层薄且煤层各向异性强，构造褶皱强烈、小构造及裂隙发育，煤体结构破碎等，为提高本区薄煤储层、小断裂、裂缝成像精度及满足岩性解释的需求，开展了宽方位三维地震勘探。为了充分发挥宽方位地震数据的优势，在处理中引入先进的OVT域处理技术，通过道集分选、OVT域五维插值、OVT域叠前时间偏移、方位各向异性校正等关键技术，获得了高分辨率、高保真度的地震数据；在解释中充分利用OVT处理形成的全方位和分方位地震数据。实现了深部含煤地层及其断层、陷落柱、挠曲等微小构造的精细刻画，提高了构造解释的精度及准确性，同时为叠前反演和各向异性研究提供了基础资料，为后期煤层气勘探开发部署提供了技术保障。Abstract: In the middle and eastern part of Qinshui Basin, due to its big buried depth(more than 1 000 m), strong anisotropy of coal seams, strong tectonic folds, development of small structures and fractures, and fragmentation of coal structure, wide azimuth 3D seismic exploration has been carried out in order to improve the imaging accuracy of thin coal reservoirs, small faults and fractures, and meet the requirements of lithologic interpretation. In order to give full play to the advantages of wide azimuth seismic data, advanced OVT domain processing technology was introduced in the processing. Through the key technologies such as gather sorting, five dimensional interpolation in OVT domain, prestack time migration in OVT domain, and azimuthal anisotropy correction, high resolution and high fidelity seismic data were obtained. In the interpreta-tion, we make full use of the omni-directional and square quantile seismic data formed by OVT processing to realize the fine description of deep coal bearing strata and its faults, collapse columns, flexure and other micro structures, improve the accu-racy of structural interpretation, and provide basic data for prestack inversion and anisotropic research, and provide technical support for the later CBM exploration and development deployment.
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Keywords:
- wide azimuth seismic exploration /
- deep CBM /
- OVT processing technique /
- anisotropic /
- Qinshui Basin
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[1] 张建军,刘红星,孙强,等. "两宽一高"地震采集技术在鄂东缘致密砂岩气藏勘探中的应用[J]. 石油地球物理勘探,2018,53(增刊2):1-7. ZHANG Jianjun,LIU Hongxing,SUN Qiang,et al. Broadband,wide-azimuth and high-density seismic acquisition for the tight sand gas exploration in the east margin of Ordos Basin[J]. Oil Geophysical Prospecting,2018,53(Sup.2):1-7.
[2] 冉建斌,张艺山,李海银,等. 吐哈盆地葡北地区"两宽一高"地震勘探技术及应用效果[J]. 石油与天然气地质,2019,40(4):725-737. RAN Jianbin,ZHANG Yishan,LI Haiyin,et al. The "2W1H" seismic exploration technique and its application in Pubei area,Turpan-Hami Basin[J]. Oil & Gas Geology,2019,40(4):725-737.
[3] 郑贵强,杨德方,李小明,等. 沁水盆地柿庄北区块深部煤储层特征测井评价研究[J]. 煤炭科学技术,2019,47(6):178-186. ZHENG Guiqiang,YANG Defang,LI Xiaoming,et al. Study on features and logging evaluation of deep coal reservoir in North Shizhuang block of Qinshui Basin[J]. Coal Science and Technology,2019,47(6):178-186.
[4] 赵贤正,朱庆忠,孙粉锦,等. 沁水盆地高阶煤层气勘探开发实践与思考[J]. 煤炭学报,2015,40(9):2131-2136. ZHAO Xianzheng,ZHU Qingzhong,SUN Fenjin,et al. Practice of coalbed methane exploration and development in Qinshui Basin[J]. Journal of China Coal Society,2015,40(9):2131-2136.
[5] 常锁亮,刘大锰,王明寿. 煤层气勘探开发中地震勘探技术的作用及应用方法探讨[J]. 中国煤层气,2008,5(2):23-27. CHANG Suoliang,LIU Dameng,WANG Mingshou. Discussion on the function and application of seismic exploration technology in coalbed methane exploration and development[J]. China Coalbed Methane,2008,5(2):23-27.
[6] 张留荣,曾维望. 地震技术在煤层气勘探开发中的应用现状与发展趋势[J]. 中国煤炭地质,2017,29(6):68-73. ZHANG Liurong,ZENG Weiwang. Application status quo and development trend of seismic prospecting technology in CBM exploration[J]. Coal Geology of China,2017,29(6):68-73.
[7] 王学军,于宝利,赵小辉,等. 油气勘探中"两宽一高"技术问题的探讨与应用[J]. 中国石油勘探,2015,20(5):41-53. WANG Xuejun,YU baoli,ZHAO xiaohui,et al. Development and application of "2W1H" technique in oil and gas exploration[J]. China Petroleum Exploration,2015,20(5):41-53.
[8] 李娜. 基于OVT域的高密度宽方位地震资料处理技术[J]. 西部探矿工程,2017,29(4):153-156. LI Na. High density and wide azimuth seismic data processing technology based on OVT domain[J]. West-China Exploration Engineering,2017,29(4):153-156.
[9] 印兴耀,张洪学,宗兆云. OVT数据域五维地震资料解释技术研究现状与进展[J]. 石油物探,2018,57(2):155-178. YIN Xingyao,ZHANG Hongxue,ZONG Zhaoyun. Research status and progress of 5D seismic data interpretation in OVT domain[J]. Geophysical Prospecting for Petroleum,2018,57(2):155-178.
[10] 林娟,娄兵,张淑萍,等. 准噶尔盆地玛湖1井区高密度三维OVT域裂缝预测的应用[J]. 石油地球物理勘探,2017,52(增刊2):146-152. LI Juan,LOU Bing,ZHANG Shuping,et al. Fracture prediction with the high-density 3D OVT domain in the Well Mahu 1 area,Junggar Basin[J]. Oil Geophysical Prospecting,2017,52(Sup.2):146-152.
[11] VERMEER G J O. Creating image gathers in the absence of proper common-offset gathers[J]. Exploration Geophysics,1998,29(4):636-642.
[12] STARR J. Method of creating common-offset/common-azimuth gathers in 3-d seismic surveys and method of conducting reflection attribute variation analysis[P]. US6026059,2000-02-15.
[13] 赵玉华,黄研,刘小亮,等. 鄂尔多斯盆地地震数据处理技术应用实例[J]. 石油地球物理勘探,2018,53(增刊1):29-35. ZHAO Yuhua,HUANG Yan,LIU Xiaoliang,et al. The application of seismic data processing techniques in Ordos Basin[J]. Oil Geophysical Prospecting,2018,53(Sup.1):29-35.
[14] 李红星. 一种基于OVT域的地震储层预测方法[J]. 特种油气藏,2019,26(4):52-57. LI Hongxing. A seismic reservoir prediction based on OVT domain[J]. Special Oil & Gas Reservoirs,2019,26(4):52-57.
[15] 龚明平,张军华,王延光,等. 分方位地震勘探研究现状及进展[J]. 石油地球物理勘探,2018,53(3):642-658. GONG Mingping,ZHANG Junhua,WANG Yanguang,et al. Current situations and recent progress in different azimuths seismic exploration[J]. Oil Geophysical Prospecting,2018,53(3):642-658.
[16] 段文胜,李飞,李世吉,等. OVT域叠前偏移衰减多次波[J].石油地球物理勘探,2013,48(增刊1):36-41. DUAN Wensheng,LI Fei,LI Shiji,et al. Multiple attenuation by prestack migration in the OVT domain[J]. Oil Geophysical Prospecting,2013,48(Sup.1):36-41.
[17] 李文花. 宽方位地震资料OVT处理技术在煤田地震勘探中的研究与应用[J]. 工程地球物理学报,2020,17(3):300-307. LI Wenhua. Reserch and application of wide azimuth seismic data OVT processing technology to coal seismic exploration[J]. Chinese Journal of Engineering Geophysics,2020,17(3):300-307.
[18] 吴婷. 页岩气地区炮检距向量片(OVT)技术叠前裂缝预测应用效果分析[J]. 西部探矿工程,2017,29(8):69-72. WU Ting. The application effect analysis of offset vector slice(OVT) technology in prestack fracture prediction in shale gas area[J]. West-China Exploration Engineering,2017,29(8):69-72.
[19] 丁吉丰,裴江云,包燚. "两宽一高"资料处理技术在大庆油田的应用[J]. 石油地球物理勘探,2017,52(增刊1):10-16. DING Jifeng,Pei Jiangyun,Bao Yi. The Application of "2W1H" seismic data processing technology in Daqing Oilfield[J]. Oil Geophysical Prospecting,2017,52(Sup.1):10-16.
[20] 李博. OVT域地震数据规则化技术及应用[J]. 石油物探,2019,58(1):53-62. LI Bo. Seismic data regularization in the OVT domain and its application[J]. Geophysical Prospecting for Petroleum,2019,58(1):53-62.
[21] 李文花. OVT域5D数据规则化处理方法在榆林某矿中的研究与应用[J]. 中国煤炭地质,2020,32(5):53-57. LI Wenhua. Research and application of OVT domain 5D data regularization processing in a yulin mine[J]. Coal Geology of China,2020,32(5):53-57.
[22] 刘依谋,印兴耀,张三元,等. 宽方位地震勘探技术新进展[J]. 石油地球物理勘探,2014,49(3):596-610. LIU Yimou,YIN Xingyao,ZHANG Sanyuan,et al. Recent advances in wide-azimuth seismic exploration[J]. Oil Geophysical Prospecting,2014,49(3):596-610.
[23] 古发明,李进步,邹新宁,等. 炮检距向量片技术在苏里格致密砂岩储层预测中的应用[J]. 地球物理学进展,2017,32(2):610-617. GU Faming,LI Jinbu,ZOU Xinning,et al. Application of the offset vector tile technique in the Sulige tight sandstone reservoir prediction[J]. Progress in Geophysics(in Chinese),2017,32(2):610-617.
[24] 刘殿秘,黄棱,王德安,等. 伊通盆地莫里青断陷宽方位三维地震资料处理[J]. 石油地球物理勘探,2018,53(增刊2):28-32. LIU Dianmi,HUANG Ling,WANG De'an,et al. 3D wide-azimuth seismic data processing in Moliqing Depression,Yitong Basin[J]. Oil Geophysical Prospecting,2018,53(Sup.2):28-32.
[25] 段文胜,李飞,王彦春,等. 面向宽方位地震处理的炮检距向量片技术[J]. 石油地球物理勘探,2013,48(2):206-213. DUAN Wensheng,LI Fei,WANG Yanchun,et al. Offset vector tile for wide-azimuth seismic processing[J]. Oil Geophysical Prospecting,2013,48(2):206-213.
[26] 袁燎,张丽娟,温铁民. OVT域处理技术在准噶尔盆地东部致密油勘探中的应用及效果[J]. 长江大学学报(自然科学版),2015,12(5):22-26. YUAN Liao,ZHANG Lijuan,WEN Tiemin. Application of Offset Vector Tile(OVT) processing technique in tight oil exploration in the east of Junggar Area[J]. Journal of Yangtze University(Natural Science Edition),2015,12(5):22-26.
[27] 康敬程,王兴,曾同生,等. OVT处理技术在自贡页岩气勘探中的应用[J]. 石油地球物理勘探,2018,53(增刊1):56-61. KANG Jingcheng,WANG Xing,ZENG Tongsheng,et al. Application of offset vector tile in the shale gas exploration in Zigong,Sichuan[J]. Oil Geophysical Prospecting,2018,53(Sup.1):56-61.
[28] 孟阳,许颖玉,李静叶,等. OVT域地震资料属性分析技术在断裂精细识别中的应用[J]. 石油地球物理勘探,2018,53(增刊2):289-294. MENG Yang,XU Yingyu,LI Jingye,et al. Fault identification with OVT-domain seismic attribute analysis[J]. Oil Geophysical Prospecting,2018,53(Sup.2):289-294.
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