阜东斜坡-北三台凸起西南斜坡异常压力分布特征及类型
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摘要
阜东斜坡-北三台凸起南斜坡构造有利,岩性勘探的潜力巨大,地层压力变化较大。通过测试、测井、地震资料对该区的地层孔隙流体压力进行较详细的研究后发现,在平面上以西泉鼻隆为封隔带其以北基本为低压区,南部为高压区。从垂向压力分布来看,在浅层具有旋回式压力分布的特征,向深层存在两个异常压力封存箱,一是中上侏罗统为主发育的异常压力封存箱,二是中下侏罗系统-三叠系为主发育的异常压力封存箱。
Southwest slope structure in Fudong Slope-Beisantai swell was beneficial area with high potential of oil and gas exploration and bigger changes of formation pressure. By using the data of detection, well logging and seism, the pore fluid pressure was studied. It was found out that on the plane Xiquan nose-like uplift was an isolated belt, low pressure belt was basically in the north, high pressure belt was in the south. From the view point of its vertical distribution, it has cyclic pressure distributing characteristics in shallow layers, there exist 2 abnormal pressure canning boxes in deep layer, one is developed in mid-upper Jurassic system, the other is developed in mid-lower Jurassic-Triassic system.
Southwest slope structure in Fudong Slope-Beisantai swell was beneficial area with high potential of oil and gas exploration and bigger changes of formation pressure. By using the data of detection, well logging and seism, the pore fluid pressure was studied. It was found out that on the plane Xiquan nose-like uplift was an isolated belt, low pressure belt was basically in the north, high pressure belt was in the south. From the view point of its vertical distribution, it has cyclic pressure distributing characteristics in shallow layers, there exist 2 abnormal pressure canning boxes in deep layer, one is developed in mid-upper Jurassic system, the other is developed in mid-lower Jurassic-Triassic system.
引文
[1]刘震,金博,贺维英等·准噶尔盆地东部地区异常压力分布特征及成因分析[J]·地质科学,2002,37(增刊):91~104·
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[10]罗晓容,肖立新·准噶尔盆地南缘中段异常压力分布及影响因素[J]·地球科学,2004,29(4):404~411
[2]刘震,金博,韩军等·准噶尔盆地东部流体势场演化对油气运聚的控制[J]·石油勘探与开发,2000,27(4):59~65·
[3]田世澄,陈永进,张兴国等·论成藏动力系统中的流体动力学机制[J]·地学前缘,2001,8(4):329~336·
[4]田世澄,陈永进,施凤成等·异常压力封存箱在油气成藏中的作用[J]·地学前缘,2004,11(3):283~284·
[5]查明,张卫海,曲江秀·准噶尔盆地异常高压特征、成因及勘探意义[J]·石油勘探与开发,2000,27(2):31~35·
[6]褚庆忠,张树林·孙虎地区成藏动力学系统研究[J]·天然气勘探与开发,2002,25(2):43~50·
[7]田世澄·论成藏动力学系统的划分和类型[J]·北京,石油工业出版社,1997·33~41·
[8]康永尚·含油气系统油气成藏动力学[J]·北京,石油工业出版社,1997·89~98·
[9]曲江秀,查明·准噶尔盆地异常压力类型及成因探讨[J]·石油实验地质,2003,25(4):333~336·
[10]罗晓容,肖立新·准噶尔盆地南缘中段异常压力分布及影响因素[J]·地球科学,2004,29(4):404~411
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