渤海海域隐蔽油气藏勘探关键技术及其应用成效
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摘要
渤海海域隐蔽油气藏勘探总体上刚刚起步,面临少井条件下隐蔽圈闭精细刻画和成藏条件综合分析等困难,缺乏一套行之有效的技术系列。通过技术攻关与组合,创建了主控因素约束下的主线式精细层序分析技术、地质模式指导下的地质-地震一体化储层预测与描述技术、岩性地层圈闭精细描述和隐蔽油气藏综合评价技术等4项关键技术,并在石臼坨凸起及周边、黄河口地区和辽东湾地区进行系统应用,推动了多个隐蔽油气藏的发现,新落实了一批有利的隐蔽圈闭目标,取得了很好的勘探成效,对其他断陷盆地隐蔽油气藏勘探具有较好的借鉴意义。
Because a start has just been made in exploring for subtle reservoirs generally in Bohai water,it is difficult to depict subtle traps refinedly or to analyze accumulation conditions comprehensively due to less drilled wells,with an effective technique series absent.Therefore,four key techniques were created through tackling technical problems and making technical combination,including the main-line type of refined stratigraphic-sequence analysis under the dominated controls,the geological-seismic integrated prediction and description of reservoir guided by a geological model,the refined description of lithologic and stratigraphic traps and the comprehensive evaluation of migration and accumulation in subtle reservoirs.Their systematical applications have resulted in quite good exploration effects in Shijiutuo rise and its surrounding areas,Yallow River mouth and Liaodong bay,with the discovery of multiple subtle reservoirs been promoted,and a group of new favorable subtle prospects been identified.These key techniques may be good references to the subtle reservoir exploration in other rifted basins.
Because a start has just been made in exploring for subtle reservoirs generally in Bohai water,it is difficult to depict subtle traps refinedly or to analyze accumulation conditions comprehensively due to less drilled wells,with an effective technique series absent.Therefore,four key techniques were created through tackling technical problems and making technical combination,including the main-line type of refined stratigraphic-sequence analysis under the dominated controls,the geological-seismic integrated prediction and description of reservoir guided by a geological model,the refined description of lithologic and stratigraphic traps and the comprehensive evaluation of migration and accumulation in subtle reservoirs.Their systematical applications have resulted in quite good exploration effects in Shijiutuo rise and its surrounding areas,Yallow River mouth and Liaodong bay,with the discovery of multiple subtle reservoirs been promoted,and a group of new favorable subtle prospects been identified.These key techniques may be good references to the subtle reservoir exploration in other rifted basins.
引文
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[2]张善文.济阳坳陷第三系隐蔽油气藏勘探理论与实践[J].石油与天然气地质,2006,27(6):731-740,761.
[3]吴因业.陆相盆地层序地层学分析的方法与实践[J].石油勘探与开发,1997,24(5):7-10
[4]米立军,毕力刚,龚胜利,等.渤海新近纪古湖发育的直接证据[J].海洋地质与第四纪地质.2004,27(2):37-42.
[5]赖维成,程建春,周心怀,等.湖盆萎缩期准平原沉积层序划分与砂体特征研究——以黄河口地区新近系明下段为例[J].中国海上油气,2009,21(3):157-161.
[6]VAIL P R.Seismic stratigraphy interpretation using sequencestratigrapthy,Part 1:Seismic stratigraphy interpretation proce-dure[J].AAPG Studies in Geology,1987,27:1-10.
[7]关学婷,范慧萍,宋之琛,等.渤海海域晚新生代孢粉学研究[M].南京:南京大学出版社,1989.
[8]李玉成,王苏民,黄耀生.气候环境变化的湖泊沉积学响应[J].地球科学进展,1999,14(4):412-416.
[9]徐长贵,赖维成.渤海古近系中深层储层预测技术及其应用[J].中国海上油气,2005,17(4):231-236.
[10]赖维成,徐长贵,于水,等.渤海海域地质-地球物理储层预测技术及其应用[J].中国海上油气,2006,18(4):217-222.
[11]加东辉,徐长贵,杨波,等.辽东湾辽东带中南部古近纪古地貌恢复和演化及其对沉积体系的控制[J].古地理学报,2007,9(2):156-166.
[12]李绪宣,张树林.海上多波地震烃类检测效果分析[J].中国海上油气(地质),1999,13(5):381-386.
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