鄂尔多斯盆地靖边气田J井区储层小幅度构造研究
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摘要
鄂尔多斯盆地靖边气田现今构造面貌为一区域性西倾大单斜,其下古生界奥陶系主力气层为马五段马五31小层,该小层顶面构造是在极其平缓的构造背景上发育的小幅度褶皱,且局部小幅度构造与产能关系密切,是寻找高产区的有利指向。应用地震解释成果和测井、钻井资料,研究J井区主力气层马五31顶面的小幅度构造分布特征;分析马五31顶面与本溪组9号煤顶、马家沟组标志层(K1、K2)构造的相关性;总结鼻状构造的组合类型;研究鼻隆构造与天然气富集的关系;总结构造圈闭与复合圈闭类型;分析小幅度构造成因动力学特征。这些认识对该井区井位部署、扩边挖潜及水平井动态调整,提高气田开发钻井成功率有着重要的现实意义。
The present structure features of Jingbian gas field are shown as the regional big westward dipping monocline.It is the Mawu31 thin layer in Mawu segment that was the main gas layer in Ordovician of Lower Paleozoic.Low amplitude folds developed on the top of the thin layer which was extremely gentle,and the local low amplitude structures are closely related with productivity,which are favorable indicators of high-yield areas.Based on the seismic explanation and logging and drilling data,this paper studies the distribution characteristics of low amplitude structure on the top surface of Mawu31 defined as the main gas layer in well J area.Moreover,the structure correlation was analyzed between the top surface of Mawu31 and the top structure of coal No.9 of Benxi Formation as well as marker beds(i.e.K1,K2) of Majiagou Formation.And the combination types of nose structure were summed up,and the relationships between gas enrichment and nose structure were studied.Also,the types of structure trap and combination trap were summarized.In addition,the genetic dynamics of low amplitude structure were analyzed.Thus,this paper gives rise to highly important guiding and practical significances on the well deployment,expanding boundary,digging potential of gas field and dynamic adjustment of horizontal well as well as improvement of drilling success ratio in this well area.
The present structure features of Jingbian gas field are shown as the regional big westward dipping monocline.It is the Mawu31 thin layer in Mawu segment that was the main gas layer in Ordovician of Lower Paleozoic.Low amplitude folds developed on the top of the thin layer which was extremely gentle,and the local low amplitude structures are closely related with productivity,which are favorable indicators of high-yield areas.Based on the seismic explanation and logging and drilling data,this paper studies the distribution characteristics of low amplitude structure on the top surface of Mawu31 defined as the main gas layer in well J area.Moreover,the structure correlation was analyzed between the top surface of Mawu31 and the top structure of coal No.9 of Benxi Formation as well as marker beds(i.e.K1,K2) of Majiagou Formation.And the combination types of nose structure were summed up,and the relationships between gas enrichment and nose structure were studied.Also,the types of structure trap and combination trap were summarized.In addition,the genetic dynamics of low amplitude structure were analyzed.Thus,this paper gives rise to highly important guiding and practical significances on the well deployment,expanding boundary,digging potential of gas field and dynamic adjustment of horizontal well as well as improvement of drilling success ratio in this well area.
引文
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[5]陈凤喜,张吉,徐小蓉,等.靖边气田统5井区马家沟组储层小幅度构造研究[J].石油天然气学报,2007,29(3):347-349.
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[11]李贤庆,胡国艺,侯读杰,等.鄂尔多斯盆地中部奥陶系风化壳天然气的运移特征[J].西安石油大学学报:自然科学版,2004,19(1):11-14.
[12]李振宏,王欣,杨遂正,等.鄂尔多斯盆地奥陶系岩溶储层控制因素分析[J].现代地质,2006,20(2):299-306.
[13]拜文华,吕锡敏,李小军,等.古岩溶盆地岩溶作用模式及古地貌精细刻画———以鄂尔多斯盆地东部奥陶系风化壳为例[J].现代地质,2002,16(3):292-298.
[14]李贤庆,胡国艺,张爱云,等.鄂尔多斯中部气田下古生界天然气的气源研究[J].现代地质,2002,16(2):191-198.
[15]夏日元,唐健生.鄂尔多斯盆地奥陶系古岩溶地貌及天然气富集特征[J].石油与天然气地质,1999,20(2):133-136.
[16]杨华,黄道军,郑聪斌,等.鄂尔多斯盆地奥陶系岩溶古地貌气藏特征及勘探进展[J].中国石油勘探,2006,11(3):1-6.
[17]代金友,张一伟,史若珩,等.鄂尔多斯盆地中部气田剥蚀脊与沟槽[J].石油勘探与开发,2005,32(6):29-31.
[18]李道燧,张宗林,徐晓蓉.鄂尔多斯盆地中部古地貌与构造对气藏的控制作用[J].石油勘探与开发,1994,21(3):9-14.
[19]马振芳,周树勋,于忠平,等.鄂尔多斯盆地中东部奥陶系顶部古风化壳特征及其与天然气富集的关系[J].石油勘探与开发,1999,26(5):21-23.
[20]徐黎明,周立发,张义楷,等.鄂尔多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.
[2]徐波,孙卫,宴宁平,等.鄂尔多斯盆地靖边气田沟槽与裂缝的配置关系对天然气富集程度的影响[J].现代地质,2009,23(2):299-304.
[3]王庆飞,邓军,杨立强,等.鄂尔多斯盆地奥陶纪“L”状边缘隆起演化过程[J].现代地质,2006,20(1):30-34.
[4]马新华.鄂尔多斯盆地天然气勘探开发形势分析[J].石油勘探与开发,2005,32(4):51-53.
[5]陈凤喜,张吉,徐小蓉,等.靖边气田统5井区马家沟组储层小幅度构造研究[J].石油天然气学报,2007,29(3):347-349.
[6]吴永平,王允诚.鄂尔多斯盆地靖边气田高产富集因素[J].石油与天然气地质,2007,28(4):473-478.
[7]钟俊义,郭广立,徐相涛.泌阳凹陷鼻状构造与油气成藏研究[J].石油天然气学报,2005,27(4):550-552.
[8]王来斌,徐怀民,张本琪.车镇凹陷鼻状构造与油气富集的关系[J].西安石油学院学报:自然科学版,2003,18(6):1-3.
[9]彭国力,李显路,王三奎,等.王集鼻状构造成藏特征及模式[J].石油天然气学报,2008,30(2):439-442.
[10]何自新,郑聪斌,陈安宁,等.长庆气田奥陶系古沟槽展布及其对气藏的控制[J].石油学报,2001,22(4):35-39.
[11]李贤庆,胡国艺,侯读杰,等.鄂尔多斯盆地中部奥陶系风化壳天然气的运移特征[J].西安石油大学学报:自然科学版,2004,19(1):11-14.
[12]李振宏,王欣,杨遂正,等.鄂尔多斯盆地奥陶系岩溶储层控制因素分析[J].现代地质,2006,20(2):299-306.
[13]拜文华,吕锡敏,李小军,等.古岩溶盆地岩溶作用模式及古地貌精细刻画———以鄂尔多斯盆地东部奥陶系风化壳为例[J].现代地质,2002,16(3):292-298.
[14]李贤庆,胡国艺,张爱云,等.鄂尔多斯中部气田下古生界天然气的气源研究[J].现代地质,2002,16(2):191-198.
[15]夏日元,唐健生.鄂尔多斯盆地奥陶系古岩溶地貌及天然气富集特征[J].石油与天然气地质,1999,20(2):133-136.
[16]杨华,黄道军,郑聪斌,等.鄂尔多斯盆地奥陶系岩溶古地貌气藏特征及勘探进展[J].中国石油勘探,2006,11(3):1-6.
[17]代金友,张一伟,史若珩,等.鄂尔多斯盆地中部气田剥蚀脊与沟槽[J].石油勘探与开发,2005,32(6):29-31.
[18]李道燧,张宗林,徐晓蓉.鄂尔多斯盆地中部古地貌与构造对气藏的控制作用[J].石油勘探与开发,1994,21(3):9-14.
[19]马振芳,周树勋,于忠平,等.鄂尔多斯盆地中东部奥陶系顶部古风化壳特征及其与天然气富集的关系[J].石油勘探与开发,1999,26(5):21-23.
[20]徐黎明,周立发,张义楷,等.鄂尔多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.
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