川西新场大型气田地质特征与预测关键技术
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摘要
川西新场大气田由浅层构造-岩性气藏、中层构造-成岩气藏、深层构造-裂缝气藏叠置而成,纵向跨度4 000多米,具多层、多类气藏叠合型大气田特征。该气田纵向上以浅层上侏罗统蓬莱镇组、中层中侏罗统上沙溪庙组、深层上三叠统须家河组二段为主力气藏。蓬莱镇组气藏的主控因素为鼻状背斜上的河道砂岩亚相,上沙溪庙组气藏的主控因素为古隆起上的河口坝与分支河道叠加微相砂岩中的有利成岩相,须家河组气藏的主控因素为大型古隆构造带上的裂缝发育系统。针对浅层气藏天然气富集带预测的关键技术是“低频强振幅”地震响应亮点识别技术;针对中层气藏天然气富集带预测的关键技术是多学科结合的储层综合建模预测评价技术;针对深层气藏天然气富集带预测的关键技术是地质-地震-测井多学科相结合的裂缝综合预测技术和含气性检测技术。
Xinchang gas field in western Sichuan depression is a large superimposed gas field characterized by multiple layers and various reservoir types,with a vertical span of over 4 000 m,and is composed of the shallow structural-lithologic gas reservoirs,the middle structural-diagenetic gas reservoirs and the deep structural-fracture gas reservoirs.Vertically,its major gas reservoirs include the shallow layer Upper Jurassic Penglaizhen Formation,the middle layer Middle Jurassic Upper Shaximiao Formation and the deep layer Upper Triassic 2nd member of Xujiahe Formation.The main control factors of Penglaizhen Formation gas reservoirs are the channel sandstone subfacies in the nose-like anticline,the main control factors of the Upper Shaximiao Formation gas reservoirs are the favorable diagenetic facies in the sandstones of superimposed mouth bar and distributary channel microfacies on the palaeohigh,while that of Xujiahe Formation gas reservoirs are the fracture systems developed in the large palaeohigh strucutral zone.The key technology for prediction of prolific zone in the shallow gas reservoirs is bright spot identification of seismic response with "low frequency but strong amplitude";the key technology for prediction of prolific zone in the middle gas reservoirs is multi-disciplinary comprehensive reservoir model building;while the key technology for prediction of the prolific zone in the deep gas reservoirs is the comprehensive prediction technology through geology-seismic-logging integration and gas-bearing property detection technology.
Xinchang gas field in western Sichuan depression is a large superimposed gas field characterized by multiple layers and various reservoir types,with a vertical span of over 4 000 m,and is composed of the shallow structural-lithologic gas reservoirs,the middle structural-diagenetic gas reservoirs and the deep structural-fracture gas reservoirs.Vertically,its major gas reservoirs include the shallow layer Upper Jurassic Penglaizhen Formation,the middle layer Middle Jurassic Upper Shaximiao Formation and the deep layer Upper Triassic 2nd member of Xujiahe Formation.The main control factors of Penglaizhen Formation gas reservoirs are the channel sandstone subfacies in the nose-like anticline,the main control factors of the Upper Shaximiao Formation gas reservoirs are the favorable diagenetic facies in the sandstones of superimposed mouth bar and distributary channel microfacies on the palaeohigh,while that of Xujiahe Formation gas reservoirs are the fracture systems developed in the large palaeohigh strucutral zone.The key technology for prediction of prolific zone in the shallow gas reservoirs is bright spot identification of seismic response with "low frequency but strong amplitude";the key technology for prediction of prolific zone in the middle gas reservoirs is multi-disciplinary comprehensive reservoir model building;while the key technology for prediction of the prolific zone in the deep gas reservoirs is the comprehensive prediction technology through geology-seismic-logging integration and gas-bearing property detection technology.
引文
1杨克明.川西坳陷油气资源现状及勘探潜力[J].石油与天然气地质,2003,24(4):322~326,331Yang Kem ing.Status of oil&gas resources and prospecting poten-tial in western S ichuan depression[J].O il&GasGeology,2003,24(4):322-326,331
2杨克明,叶军,吕正祥.川西坳陷上三叠统须家河组天然气分布及成藏特征[J].石油与天然气地质,2004,25(5):501~505Yang Kem ing,Ye Jun,LüZhengxiang.Characteristics of gas d is-tribution and reservoiring in Upper Triassic Xu jiahe Formation inwestern S ichuan depression[J].O il&Gas Geology,2004,25(5):501-505
3朱彤,叶军.川西坳陷致密碎屑岩气藏类型划分及特征[J].石油实验地质,2004,26(4):377~382Zhu Tong,Ye Jun.Tight sandstone gas pool classification andcharacteristics in western S ichuan depression[J].Petroleum Geo-logy&Experim ent,2004,26(4):337-382
4杨克明,唐宇,李书兵,等.川孝坳陷低孔渗碎屑岩气藏形成机理及勘探潜力[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.22~26Yang Kem ing,Tang Yu,L i Shub ing,et al.Low porosity&lowperm eab ility gas accumu lation form ing m echan ism and explorationpotential in Chuanxiao depression[A].In:Yang Kem ing,Xu Jin,eds.Natural gas reservoiring theory and exploration&develop-m entm ethods and technologies[C].Beijing:Geological Pub li-sh ing House,2004.22-26
5张虹.新场、合兴场气田蓬莱镇组气藏含气砂体横向预测[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.502~511Zhang Hong.Lateral pred iction for gas-bearing sand body inPenglaizhen Formation in Hexingchang gas field[A].In:YangKem ing,Xu Jin,eds.Natural gas reservoiring theory and explo-ration&developm ent m ethods and technologies[C].Beijing:Geological Pub lish ing House,2004.502-511
6张筠.川西地区致密碎屑岩储层测井评价技术[J].测井技术,2004,28(10):419~422Zhang Yun.Logging evaluation technology for tight clastic rockreservoirs in western S ichuan[J].Logging Technology,2004,28(10):419-422
7许国明,刘诗荣,杨成.地震反射波属性分析和联井反演技术在川西气藏描述中的应用[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.555~566Xu Guom ing,L iu Sh irong,Yang Cheng.The application of theattributive analysis on seism ic reflected wave for western S ichuangas reservoir description[A].In:Yang Kem ing,Xu Jin,eds.Natural gas reservoiring theory and exploration&developm entm ethods and technologies[C].Beijing:Geological Pub lish ingHouse,2004.555-566
8叶军,唐艳.川西坳陷J2s储集岩特征与孔隙形成、保存机制[J].天然气工业,2001,21(1):47~51Ye Jun,Tang Yan.The characteristics of J2sreservoir rock andit’s pore-form ing&preservation m echan ism in western S ichuan[J].Natural Gas Industry,2001,21(1):47-51
9叶军,朱彤,赵泽江.川西新场气田上沙溪庙组(J2s)气藏储集体特征及形成机理研究[J].石油实验地质,1998,20(4):384~389Ye Jun,Zhu Tong,Zhao Zejiang.The characteristics of J2sreser-voir and it’s form ing m echan ism in X inchang gas field in westernS ichuan[J].Petroleum Geology&Experim ent,1998,20(4):384-389
10黎从军.川北柏垭地区大安寨一亚段储渗体特征及油气分布[J].石油与天然气地质,2002,23(1):81~83L i Congjun.O il-gas pred iction and characteristics of reservoirbod ies forDa’anzhai-1 subm ember in Baiya ofNorth S ichuan[J].O il&Gas Geology,2002,23(1):81-83
11 L i Congjun,Zhang X iaopeng,Zhang Shaonan.Pred iction of a lowtight sandstone reservoir in the Majing gas field,S ichuan basin,Ch ina[J].Journal of Geophysics and Engineering,2004,(3):228-233
2杨克明,叶军,吕正祥.川西坳陷上三叠统须家河组天然气分布及成藏特征[J].石油与天然气地质,2004,25(5):501~505Yang Kem ing,Ye Jun,LüZhengxiang.Characteristics of gas d is-tribution and reservoiring in Upper Triassic Xu jiahe Formation inwestern S ichuan depression[J].O il&Gas Geology,2004,25(5):501-505
3朱彤,叶军.川西坳陷致密碎屑岩气藏类型划分及特征[J].石油实验地质,2004,26(4):377~382Zhu Tong,Ye Jun.Tight sandstone gas pool classification andcharacteristics in western S ichuan depression[J].Petroleum Geo-logy&Experim ent,2004,26(4):337-382
4杨克明,唐宇,李书兵,等.川孝坳陷低孔渗碎屑岩气藏形成机理及勘探潜力[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.22~26Yang Kem ing,Tang Yu,L i Shub ing,et al.Low porosity&lowperm eab ility gas accumu lation form ing m echan ism and explorationpotential in Chuanxiao depression[A].In:Yang Kem ing,Xu Jin,eds.Natural gas reservoiring theory and exploration&develop-m entm ethods and technologies[C].Beijing:Geological Pub li-sh ing House,2004.22-26
5张虹.新场、合兴场气田蓬莱镇组气藏含气砂体横向预测[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.502~511Zhang Hong.Lateral pred iction for gas-bearing sand body inPenglaizhen Formation in Hexingchang gas field[A].In:YangKem ing,Xu Jin,eds.Natural gas reservoiring theory and explo-ration&developm ent m ethods and technologies[C].Beijing:Geological Pub lish ing House,2004.502-511
6张筠.川西地区致密碎屑岩储层测井评价技术[J].测井技术,2004,28(10):419~422Zhang Yun.Logging evaluation technology for tight clastic rockreservoirs in western S ichuan[J].Logging Technology,2004,28(10):419-422
7许国明,刘诗荣,杨成.地震反射波属性分析和联井反演技术在川西气藏描述中的应用[A].杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.555~566Xu Guom ing,L iu Sh irong,Yang Cheng.The application of theattributive analysis on seism ic reflected wave for western S ichuangas reservoir description[A].In:Yang Kem ing,Xu Jin,eds.Natural gas reservoiring theory and exploration&developm entm ethods and technologies[C].Beijing:Geological Pub lish ingHouse,2004.555-566
8叶军,唐艳.川西坳陷J2s储集岩特征与孔隙形成、保存机制[J].天然气工业,2001,21(1):47~51Ye Jun,Tang Yan.The characteristics of J2sreservoir rock andit’s pore-form ing&preservation m echan ism in western S ichuan[J].Natural Gas Industry,2001,21(1):47-51
9叶军,朱彤,赵泽江.川西新场气田上沙溪庙组(J2s)气藏储集体特征及形成机理研究[J].石油实验地质,1998,20(4):384~389Ye Jun,Zhu Tong,Zhao Zejiang.The characteristics of J2sreser-voir and it’s form ing m echan ism in X inchang gas field in westernS ichuan[J].Petroleum Geology&Experim ent,1998,20(4):384-389
10黎从军.川北柏垭地区大安寨一亚段储渗体特征及油气分布[J].石油与天然气地质,2002,23(1):81~83L i Congjun.O il-gas pred iction and characteristics of reservoirbod ies forDa’anzhai-1 subm ember in Baiya ofNorth S ichuan[J].O il&Gas Geology,2002,23(1):81-83
11 L i Congjun,Zhang X iaopeng,Zhang Shaonan.Pred iction of a lowtight sandstone reservoir in the Majing gas field,S ichuan basin,Ch ina[J].Journal of Geophysics and Engineering,2004,(3):228-233
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