浅海区古生界海底电缆拟宽线地震采集方法
|
摘要
南黄海中古生界盆地沉积厚度大,具有良好的油气勘探前景,是我国近海海域油气勘探的重要区域之一.但由于南黄海西侧海域水体浅,地震勘探目的层系时代老,地质背景复杂,浅层存在强屏蔽层等原因,传统海上拖揽地震采集方法在实际施工方式和地质要求上都不能充分满足该区的勘探需求.通过对其地震地质条件和已往采集技术手段的系统分析,针对实际地质情况和勘探要求,设计了针对南黄海西侧浅水区古生界地层的海底电缆地震采集方案,采用两炮三线的拟宽线观测系统和中间放炮递减排列滚动接收的作业方式.通过实际资料证实该种拟宽线海底电缆采集技术是适用于海域古生界地层的有效地震采集技术.
It is believed that Mesozoic-Paleozoic marine sedimentary strata is widely distributed and has a great thickness in South Yellow Sea basin,so it bears great hydrocarbon potential and is one of the most important areas in offshore oil exploration.However,due to shallow water,old target strata,large burial depth, complicated geological conditions and strong shielding layer in upper shallow depth,it is difficult to get high quality seismic data and meet the requirements of exploration by traditional hydrophone streamer methods in the westward of south yellow sea.Seismic data has become a bottleneck to the hydrocarbon exploration in this area.Aiming at this peculiar survey demand and solve actual geological problem,this paper analyses the special seismic and geological conditions in this area and compared previous seismic acquisition patterns,then presents the thought of pseud wide line ocean bottom cable acquisition method.By summarizing a suit of ocean bottom cable acquisition method and parameters which is suitable for the ancient strata in west shallow water area of South Yellow Sea,the specific data acquisition parameters and geometries are demonstrated and tested.The geometry is combined by two shot lines and three receiver lines,and the mode of operation is shot in middle and receiver scrolling in descending order.In addition,the real data verified that the OBC pseud wide line acquisition method has good effect in imaging of Paleozoic strata in South Yellow Sea.
It is believed that Mesozoic-Paleozoic marine sedimentary strata is widely distributed and has a great thickness in South Yellow Sea basin,so it bears great hydrocarbon potential and is one of the most important areas in offshore oil exploration.However,due to shallow water,old target strata,large burial depth, complicated geological conditions and strong shielding layer in upper shallow depth,it is difficult to get high quality seismic data and meet the requirements of exploration by traditional hydrophone streamer methods in the westward of south yellow sea.Seismic data has become a bottleneck to the hydrocarbon exploration in this area.Aiming at this peculiar survey demand and solve actual geological problem,this paper analyses the special seismic and geological conditions in this area and compared previous seismic acquisition patterns,then presents the thought of pseud wide line ocean bottom cable acquisition method.By summarizing a suit of ocean bottom cable acquisition method and parameters which is suitable for the ancient strata in west shallow water area of South Yellow Sea,the specific data acquisition parameters and geometries are demonstrated and tested.The geometry is combined by two shot lines and three receiver lines,and the mode of operation is shot in middle and receiver scrolling in descending order.In addition,the real data verified that the OBC pseud wide line acquisition method has good effect in imaging of Paleozoic strata in South Yellow Sea.
引文
Barr F J.1997.Dual-sensor OBC technology[J].The LeadingEdge,16(1):45-51.
Cai D S,Feng X J,Gao L,et al.2004.Petroleum potential andexploration direction of pre-Tertiary remnant basins in offshoreChina[J].China Offshore Oil and Gas(Geology)(in Chinese),16(1):1-17.
Cao G B,Li Y W,Cui R G.2007.The multi-wave seismicacquisition method and applied result in Ken 71 area[J].Progress in Geophysics(in Chinese),22(5):1510-1516.
Gao S L,Zhang M Q,Chen H.2014.A large-scale seismic source,deep gun and cable sinking and long cable length application inMesozoic-Paleozoic basin in the south Huanghai sea[J].MarineGeology&Quaternary Geology(in Chinese),34(1):95-101.
Hao T Y,Yang C C,Wang Z L,et al.2008.Comprehensivegeophysical technology on Oil&gas resources of pre-cenozoicresidual basin in Chinese marine area[J].Progress inGeophysics(in Chinese),23(3):731-742.
Hoffe B H,Lines L R.2000.Applications of OBC recording[J].The Leading Edge,19(4):382-391
Liu G D.2001a.The second exploitation of the oil and gas resourcesin China[J].Progress in Geophysics(in Chinese),16(4):1-3.
Liu G D.2001b.Pre-Cenozoic marine residual basins[J].Progressin Geophysics(in Chinese),16(2):1-7.
Liu G D,Chen J.2005.Analysis of difficulties in gas-petroleumprospecting in Chinese pre-cenozoic relic basin and thecorresponding solutions[J].Progress in Geophysics(inChinese),20(2):273-275.
Ma Y S.2006.Cases of discovery and exploration of marine fields inChina(part 6):Puguang Gas Field in Sichuan Basin[J].MarineOrigin Petroleum Geology(In Chinese),11(2):35-40.
She D P,Yan J W,Wu J M.2006.The full wave field seismicexploration[J].Progress in Geophysics(in Chinese),21(2):472-477.
Wang S J.2012.Technical advantages of OBC seismic survey and itsapplication effects offshore China[J].China Offshore Oil andGas(in Chinese),24(2):9-12.
Wu Z Q,Lu Kai,Yan G J,et al.2008.Geophysical methods to thePre-Cenozoic hydrocarbon exploration of South Yellow Sea[J].Marine Geology Development(in Chinese),24(8):1-7.
Wu Z Q,Xiao G L,Dong H P,et al.2012.A suggestion of marinetridimensional wideline seismic technique for exploration ofmarine carbonate reservoir in the South Yellow Sea Basin[J].Marine Geology Frontiers(in Chinese),28(8):56-60.
Xu J X,Qiu Y,He J G,et al.2005.Seismic exploration acquisitiontechnique application of Beach shallow sea[J].Progress inGeophysics(in Chinese),20(1):66-70.
Yao Y J,Feng Z Q,Hao T Y,et al.2008.A new understanding ofthe structural layers in the South Yellow Sea Basin and theirhydrocarbon-bearing characteristics[J].Earth Science Frontiers(in Chinese),15(6):232-240.
Zhang H Q,Chen J W,Li G,et al.2009.Discovery from seismicsurvey in Laoshan uplift of the South Yellow Sea and thesignificance[J].Marine Geology and Quaternary Geology(inChinese),29(3):107-113.
Zhao R Y,Zhang Z B,Xuan Y H,et al.2011.Application of thedual-sensor streamer acquisition technology in Mesozoic groupof Pearl-river mouth basin[J].Journal of Oil and GasTechnology(in Chinese),33(3):58-61.
Zhu W L,Wang G C.2000.New venture of exploration of precenozoic oil and gas in Chinese offshore areas[J].Earth ScienceFrontiers(in Chinese),7(3):215-226.
蔡东升,冯晓杰,高乐,等.2004.中国近海前第三纪残余盆地及其勘探潜力与方向[J].中国海上油气,16(1):1-17.
曹国滨,李云伟,崔汝国.2007.垦71地区多波采集方法研究及应用效果[J].地球物理学进展,22(5):1510-1516.
高顺莉,张敏强,陈华.2014.大震源长缆深沉放地震采集技术在南黄海中古生代盆地的应用[J].海洋地质与第四纪地质,34(1):95-101.
郝天珧,杨长春,王真理,等.2008.海区前新生代残留盆地油气研究的综合地球物理技术[J].地球物理学进展,23(3):731-742.
刘光鼎.2001a.中国油气资源企盼二次创业[J].地球物理学进展,16(4):1-3.
刘光鼎.2001b.前新生代海相残留盆地[J].地球物理进展,16(2):1-7.
刘光鼎,陈洁.2005.中国前新生代残留盆地油气勘探难点分析及对策[J].地球物理学进展,20(2):273-275.
马永生.2006.中国海相油气田勘探实例之六:四川盆地普光大气田的发现与勘探[J].海相油气地质,11(2):35-40.
佘德平,严建文,吴继敏.2006.全波场地震勘探技术[J].地球物理学进展,21(2):472-477.
王守君.2012.海底电缆地震技术优势及在中国近海的应用效果[J].中国海上油气,24(2):9-12.
吴志强,陆凯,闫桂京,等.2008.南黄海前新生代油气地球物理勘探方法[J].海洋地质动态,24(8):1-7.
吴志强,肖国林,董贺平,等.2012.基于南黄海盆地海相油气的海洋立体宽线地震勘探技术设想[J].海洋地质前沿,28(8):56-60.
徐锦玺,邱燕,何京国,等.2005.滩浅海地震勘探采集技术应用[J].地球物理学进展,20(1):66-70.
姚永坚,冯志强,郝天珧,等.2008.对南黄海盆地构造层特征及含油气性的新认识[J].地学前缘,15(6):232-240.
张海啟,陈建文,李刚,等.2009.地震调查在南黄海崂山隆起的发现及其石油地质意义[J].海洋地质与第四纪地质,29(3):107-113.
赵仁永,张振波,轩义华,等.2011.双传感器拖缆采集技术在珠江口盆地中生界地层中的应用[J].石油天然气学报,33(3):58-61.
朱伟林,王国纯.2000.中国近海前新生代油气勘探新领域探索[J].地学前缘,7(3):215-226.
Cai D S,Feng X J,Gao L,et al.2004.Petroleum potential andexploration direction of pre-Tertiary remnant basins in offshoreChina[J].China Offshore Oil and Gas(Geology)(in Chinese),16(1):1-17.
Cao G B,Li Y W,Cui R G.2007.The multi-wave seismicacquisition method and applied result in Ken 71 area[J].Progress in Geophysics(in Chinese),22(5):1510-1516.
Gao S L,Zhang M Q,Chen H.2014.A large-scale seismic source,deep gun and cable sinking and long cable length application inMesozoic-Paleozoic basin in the south Huanghai sea[J].MarineGeology&Quaternary Geology(in Chinese),34(1):95-101.
Hao T Y,Yang C C,Wang Z L,et al.2008.Comprehensivegeophysical technology on Oil&gas resources of pre-cenozoicresidual basin in Chinese marine area[J].Progress inGeophysics(in Chinese),23(3):731-742.
Hoffe B H,Lines L R.2000.Applications of OBC recording[J].The Leading Edge,19(4):382-391
Liu G D.2001a.The second exploitation of the oil and gas resourcesin China[J].Progress in Geophysics(in Chinese),16(4):1-3.
Liu G D.2001b.Pre-Cenozoic marine residual basins[J].Progressin Geophysics(in Chinese),16(2):1-7.
Liu G D,Chen J.2005.Analysis of difficulties in gas-petroleumprospecting in Chinese pre-cenozoic relic basin and thecorresponding solutions[J].Progress in Geophysics(inChinese),20(2):273-275.
Ma Y S.2006.Cases of discovery and exploration of marine fields inChina(part 6):Puguang Gas Field in Sichuan Basin[J].MarineOrigin Petroleum Geology(In Chinese),11(2):35-40.
She D P,Yan J W,Wu J M.2006.The full wave field seismicexploration[J].Progress in Geophysics(in Chinese),21(2):472-477.
Wang S J.2012.Technical advantages of OBC seismic survey and itsapplication effects offshore China[J].China Offshore Oil andGas(in Chinese),24(2):9-12.
Wu Z Q,Lu Kai,Yan G J,et al.2008.Geophysical methods to thePre-Cenozoic hydrocarbon exploration of South Yellow Sea[J].Marine Geology Development(in Chinese),24(8):1-7.
Wu Z Q,Xiao G L,Dong H P,et al.2012.A suggestion of marinetridimensional wideline seismic technique for exploration ofmarine carbonate reservoir in the South Yellow Sea Basin[J].Marine Geology Frontiers(in Chinese),28(8):56-60.
Xu J X,Qiu Y,He J G,et al.2005.Seismic exploration acquisitiontechnique application of Beach shallow sea[J].Progress inGeophysics(in Chinese),20(1):66-70.
Yao Y J,Feng Z Q,Hao T Y,et al.2008.A new understanding ofthe structural layers in the South Yellow Sea Basin and theirhydrocarbon-bearing characteristics[J].Earth Science Frontiers(in Chinese),15(6):232-240.
Zhang H Q,Chen J W,Li G,et al.2009.Discovery from seismicsurvey in Laoshan uplift of the South Yellow Sea and thesignificance[J].Marine Geology and Quaternary Geology(inChinese),29(3):107-113.
Zhao R Y,Zhang Z B,Xuan Y H,et al.2011.Application of thedual-sensor streamer acquisition technology in Mesozoic groupof Pearl-river mouth basin[J].Journal of Oil and GasTechnology(in Chinese),33(3):58-61.
Zhu W L,Wang G C.2000.New venture of exploration of precenozoic oil and gas in Chinese offshore areas[J].Earth ScienceFrontiers(in Chinese),7(3):215-226.
蔡东升,冯晓杰,高乐,等.2004.中国近海前第三纪残余盆地及其勘探潜力与方向[J].中国海上油气,16(1):1-17.
曹国滨,李云伟,崔汝国.2007.垦71地区多波采集方法研究及应用效果[J].地球物理学进展,22(5):1510-1516.
高顺莉,张敏强,陈华.2014.大震源长缆深沉放地震采集技术在南黄海中古生代盆地的应用[J].海洋地质与第四纪地质,34(1):95-101.
郝天珧,杨长春,王真理,等.2008.海区前新生代残留盆地油气研究的综合地球物理技术[J].地球物理学进展,23(3):731-742.
刘光鼎.2001a.中国油气资源企盼二次创业[J].地球物理学进展,16(4):1-3.
刘光鼎.2001b.前新生代海相残留盆地[J].地球物理进展,16(2):1-7.
刘光鼎,陈洁.2005.中国前新生代残留盆地油气勘探难点分析及对策[J].地球物理学进展,20(2):273-275.
马永生.2006.中国海相油气田勘探实例之六:四川盆地普光大气田的发现与勘探[J].海相油气地质,11(2):35-40.
佘德平,严建文,吴继敏.2006.全波场地震勘探技术[J].地球物理学进展,21(2):472-477.
王守君.2012.海底电缆地震技术优势及在中国近海的应用效果[J].中国海上油气,24(2):9-12.
吴志强,陆凯,闫桂京,等.2008.南黄海前新生代油气地球物理勘探方法[J].海洋地质动态,24(8):1-7.
吴志强,肖国林,董贺平,等.2012.基于南黄海盆地海相油气的海洋立体宽线地震勘探技术设想[J].海洋地质前沿,28(8):56-60.
徐锦玺,邱燕,何京国,等.2005.滩浅海地震勘探采集技术应用[J].地球物理学进展,20(1):66-70.
姚永坚,冯志强,郝天珧,等.2008.对南黄海盆地构造层特征及含油气性的新认识[J].地学前缘,15(6):232-240.
张海啟,陈建文,李刚,等.2009.地震调查在南黄海崂山隆起的发现及其石油地质意义[J].海洋地质与第四纪地质,29(3):107-113.
赵仁永,张振波,轩义华,等.2011.双传感器拖缆采集技术在珠江口盆地中生界地层中的应用[J].石油天然气学报,33(3):58-61.
朱伟林,王国纯.2000.中国近海前新生代油气勘探新领域探索[J].地学前缘,7(3):215-226.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心