准噶尔盆地腹部三工河组二段层序界面厘定
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摘要
准噶尔盆地腹部岩性油气藏油水关系复杂,解决这一问题的关键是层序划分对比。通过岩心、录井、测井、地震的综合研究发现,在下侏罗统三工河组二段内部可以识别出一个三级层序界面。该界面在岩性上以冲刷面及其之上砾岩或者含砾粗砂岩的出现为标志,在测井曲线上表现为突变接触,该界面在伽马反演剖面上能够识别并且能够追踪对比。界面之下的高水位体系域砂体连通性好、侧向封堵不好、不含油,层序界面之上的低水位体系域及水进体系域三角洲分流河道砂体储集层非均质性强、侧向封堵条件好、含油。厘定追踪该界面并寻找该界面之上的低水位体系域和水进体系域的三角洲分流河道砂体是勘探的关键。
In view of the complex water-oil relations of lithology reservoir in hinterland of Junggar basin,the sequence stratigraphic classification and correlation are conducted by comprehensive researches of core,logging,well logging and seismic profile.The result shows that a sequence boundary is identified inside member 2 of Sangonghe formation of Lower Jurassic,which is characterized by lithology of scour surface and conglomerate and gravel bearing gritstone over it,and by well logs of abrupt contact.The boundary can be identified and traced for correlation on the gamma inverse profile.In HST beneath the boundary have good interconnecting sand body,poor lateral sealing,and no oil shows;in LST and TST above it have delta distributary channel sand reservoir with serious heterogeneity and good lateral sealing,being oil layer.Hence,tracing this boundary and searching for the delta distributary channel sands in LST and TST will be the key for petroleum exploration in this area.
In view of the complex water-oil relations of lithology reservoir in hinterland of Junggar basin,the sequence stratigraphic classification and correlation are conducted by comprehensive researches of core,logging,well logging and seismic profile.The result shows that a sequence boundary is identified inside member 2 of Sangonghe formation of Lower Jurassic,which is characterized by lithology of scour surface and conglomerate and gravel bearing gritstone over it,and by well logs of abrupt contact.The boundary can be identified and traced for correlation on the gamma inverse profile.In HST beneath the boundary have good interconnecting sand body,poor lateral sealing,and no oil shows;in LST and TST above it have delta distributary channel sand reservoir with serious heterogeneity and good lateral sealing,being oil layer.Hence,tracing this boundary and searching for the delta distributary channel sands in LST and TST will be the key for petroleum exploration in this area.
引文
[1]徐怀大.层序地层学理论用于我国断陷盆地分析中的问题[J].石油与天然气地质,1991,12(1):52-57.
[2]徐怀大.陆相层序地层学研究中的某些问题[J].石油与天然气地质,1997,18(2):83-89.
[3]邓宏文,王红亮,李熙吉吉.层序地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-184.
[4]刘豪,王英民,王媛,等.准噶尔盆地三工河组层序界面结构分析[J].新疆石油地质,2002,2(3 2):127-129.
[5]王龙樟.准噶尔盆地中、新生代陆相层序地层学探讨及其应用[J].新疆石油地质,1995,1(6 4):324-330.
[6]蒲仁海,梅志超,唐忠华.准噶尔盆地东部侏罗系陆相层序地层学初探[J].新疆石油地质,1994,15(4):335-341.
[7]王宜林,王英民,齐雪峰,等.准噶尔盆地侏罗系层序地层划分[J].新疆石油地质,2001,2(2 5):382-385.
[8]张年富,齐雪峰,王英民,等.准噶尔盆地侏罗系Ⅲ层序底界上下砂体预测及有利区评价[J].石油与天然气地质,2002,23(2):145-149.
[9]张满郎,朱筱敏,张琴.准噶尔盆地东部侏罗系沉积体系及油气意义[J].石油与天然气地质,2000,21(3):272-278.
[10]朱筱敏,康安,张琴,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质,2002,23(2):121-126.
[11]张传林,赵省民,文志刚.准噶尔盆地南缘辫状河三角洲沉积特征及储集性[J].新疆石油地质,2003,24(3):202-204.
[12]刘得光,王飞宇.准噶尔盆地马桥凸起侏罗系油气成藏期次[J].新疆石油地质,1994,15(6):465-467.
[2]徐怀大.陆相层序地层学研究中的某些问题[J].石油与天然气地质,1997,18(2):83-89.
[3]邓宏文,王红亮,李熙吉吉.层序地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-184.
[4]刘豪,王英民,王媛,等.准噶尔盆地三工河组层序界面结构分析[J].新疆石油地质,2002,2(3 2):127-129.
[5]王龙樟.准噶尔盆地中、新生代陆相层序地层学探讨及其应用[J].新疆石油地质,1995,1(6 4):324-330.
[6]蒲仁海,梅志超,唐忠华.准噶尔盆地东部侏罗系陆相层序地层学初探[J].新疆石油地质,1994,15(4):335-341.
[7]王宜林,王英民,齐雪峰,等.准噶尔盆地侏罗系层序地层划分[J].新疆石油地质,2001,2(2 5):382-385.
[8]张年富,齐雪峰,王英民,等.准噶尔盆地侏罗系Ⅲ层序底界上下砂体预测及有利区评价[J].石油与天然气地质,2002,23(2):145-149.
[9]张满郎,朱筱敏,张琴.准噶尔盆地东部侏罗系沉积体系及油气意义[J].石油与天然气地质,2000,21(3):272-278.
[10]朱筱敏,康安,张琴,等.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭[J].石油与天然气地质,2002,23(2):121-126.
[11]张传林,赵省民,文志刚.准噶尔盆地南缘辫状河三角洲沉积特征及储集性[J].新疆石油地质,2003,24(3):202-204.
[12]刘得光,王飞宇.准噶尔盆地马桥凸起侏罗系油气成藏期次[J].新疆石油地质,1994,15(6):465-467.
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