复杂山地山前带“两宽一高”井炮—可控震源联合地震采集技术应用实例
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摘要
针对塔里木盆地YZ区块复杂油气藏特征及勘探需求,新实施的三维地震采集项目采用了"两宽一高"地震采集技术,提出了突出小线距的高密度、宽方位三维观测系统优化设计方向,并应用了复杂地表区井炮—可控震源联合激发高效采集施工设计、巨厚山体区模型约束浅层层析三维表层调查与建模和数字化地震队高效施工辅助方法,确保了"两宽一高"地震采集技术在该区的成功实施。该技术大幅提高了地震采集效率,节约了地震勘探成本,地震资料品质也得到了明显改善,证明了"两宽一高"地震采集技术在复杂地表、复杂构造背景下岩性勘探中的有效性,为类似复杂区"两宽一高"地震采集技术的实施提供了借鉴。
Aiming at the characteristics and exploration demands of the complex reservoirs of Block YZ in Tarim Basin,"Two-wide One-high"seismic acquisition technique is adopted in the new 3Dseismic acquisition project,this paper puts forward the optimization direction of high density wide azimuth 3Dobservation system emphasizing the small line distance.And the construction design for high-efficiency acquisition of the explosive-vibrator combined excitation technique in complex surface area,the modeling constrained shallow layer tomographic 3Dsurface investigating and modeling technique in mountain area which weathered layer is thick,DSS high-efficiency acquisition associated technique are all put to use,those ensure the successful implementation of this"Two-wide One-high"3Dseismic acquisition project.All the application of the technical measures not only greatly improved the acquisition efficiency,saving the cost of exploration,but also made seismic data quality improved distinctly in the area.It is proved that the seismic acquisition technique of"Two-wide and One-high"is effective in lithologic exploration of complex structural background and complex surface area,which provides reference for the implementation of the"Two-wide and One-high"seismic acquisition technology in the similar complex area.
Aiming at the characteristics and exploration demands of the complex reservoirs of Block YZ in Tarim Basin,"Two-wide One-high"seismic acquisition technique is adopted in the new 3Dseismic acquisition project,this paper puts forward the optimization direction of high density wide azimuth 3Dobservation system emphasizing the small line distance.And the construction design for high-efficiency acquisition of the explosive-vibrator combined excitation technique in complex surface area,the modeling constrained shallow layer tomographic 3Dsurface investigating and modeling technique in mountain area which weathered layer is thick,DSS high-efficiency acquisition associated technique are all put to use,those ensure the successful implementation of this"Two-wide One-high"3Dseismic acquisition project.All the application of the technical measures not only greatly improved the acquisition efficiency,saving the cost of exploration,but also made seismic data quality improved distinctly in the area.It is proved that the seismic acquisition technique of"Two-wide and One-high"is effective in lithologic exploration of complex structural background and complex surface area,which provides reference for the implementation of the"Two-wide and One-high"seismic acquisition technology in the similar complex area.
引文
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[2]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.
[3]王乃建,梁向豪,周翼,等.宽方位三维给塔里木油气勘探带来的启迪[J].石油科技论坛,2012,31(2):21-26.
[4]梁向豪,孔德政,黄有晖,等.复杂构造三维地震勘探观测宽度与接收线距选择分析[J].天然气勘探与开发,2015,38(2):27-30.
[5]易维启,董世泰,曾忠,等.地震勘探技术性与经济性策略考量[J].中国石油勘探,2013,18(4):19-25.
[6]倪宇东.可控震源地震勘探采集技术[M].北京:石油工业出版社,2014.
[7]陶知非,赵永林,马磊.低频地震勘探与低频可控震源[J].物探装备,2011,21(2):71-76.
[8]王恩华,赵邦六,王喜双,等.中国石油可控震源高效地震采集技术应用与展望[J].中国石油勘探,2013,18(5):24-34.
[9]周大同,周恒,张慕刚,等.可控震源施工效率估算方法[J].石油地球物理勘探,2008,43(增刊2):50-54.
[10]王淑玲.约束层析静校正方法应用效果分析[J].石油物探,2012,51(4):383-387.
[11]吕景峰,李军武,王剑.库车复杂地表区静校正技术应用及效果[J].非常规油气,2015,2(2):1-4.
[12]苏贵仕,黄莉莉,赵明秋.伪三维层析反演静校正技术及其应用[J].石油地球物理勘探,2007,42(增刊):111-114.
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