古岩溶地貌及其对岩溶储层的控制——以塔里木盆地轮古西地区奥陶系为例
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摘要
岩溶地貌是岩溶作用与各类地质作用综合作用的结果,不同地貌形态对岩溶储层发育又起着控制作用。以塔里木盆地轮古西地区为例,通过地震层拉平技术恢复了该区的古岩溶地貌,发现研究区岩溶地貌起伏变化很大,自东向西依次发育峰丛洼地、峰林谷地和峰林平原地貌组合。根据测井、钻井、录井等资料对不同地貌区垂向上的岩溶相带进行了划分,并在此基础上,探讨了不同古地貌区岩溶储层的发育特征,结果表明不同古岩溶地貌区、不同岩溶相带中不同类型岩溶储层发育状况存在较大差异,反映了古岩溶地貌明显控制岩溶相带的空间发育,并进一步控制了岩溶的发育。
Karst landform is the result of the compositive process of karst and various geology.And various shapes of karst landforms also control the karst reservoir development.The palaeokarst landform in west Lungu region was restored by using seismic horizon flattening technique.The results show that the surface of the karst is undulate greatly,and develops the landform combination of peak cluster depression,peak forest valley and peak forest plain from east to west.The vertical karst facies belts in different landform was divided according to the data of well logging,drilling and geological log.Then,the development characteristics of reservoirs in different landforms are discussed.Research results indicate that the great differences of cavern development and filling status exist among various palaeokarst landforms and karst facies belts,which reflect that the palaeokarst landforms control the spatial development of karst facies belt and reservoirs.
Karst landform is the result of the compositive process of karst and various geology.And various shapes of karst landforms also control the karst reservoir development.The palaeokarst landform in west Lungu region was restored by using seismic horizon flattening technique.The results show that the surface of the karst is undulate greatly,and develops the landform combination of peak cluster depression,peak forest valley and peak forest plain from east to west.The vertical karst facies belts in different landform was divided according to the data of well logging,drilling and geological log.Then,the development characteristics of reservoirs in different landforms are discussed.Research results indicate that the great differences of cavern development and filling status exist among various palaeokarst landforms and karst facies belts,which reflect that the palaeokarst landforms control the spatial development of karst facies belt and reservoirs.
引文
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12顾家裕,周兴熙.塔里木盆地轮南潜山岩溶及油气分布规律[M].北京:石油工业出版社,2001.1~268
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2顾忆.塔里木盆地北部塔河油田油气藏成藏机制[J].石油实验地质,2002,22(4):307~312
3周玉琦,黎玉战,侯鸿斌.塔里木盆地塔河油田的勘探实践与认识[J].石油实验地质,2001,23(4):363~367
4夏日元,唐健生,关碧珠等.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
5肖玉茹,何峰煜,孙义梅.古洞穴型碳酸盐岩储层特征研究:以塔河油田奥陶系古洞穴为例[J].石油与天然气地质,2003,24(1):75~86
6王敦则,黎玉战,俞仁连.塔里木盆地塔河油田下奥陶统油藏特征及成藏条件分析[J].石油实验地质,2003,25(2):122~128
7闫相宾.塔河油田奥陶系碳酸盐岩储层特征[J].石油与天然气地质,2002,23(3):262~265
8刘金荣,黄国彬,黄学灵等.广西区域热带岩溶地貌不同类型的演化浅议[J].中国岩溶,2001,20(1):247~258
9杨景春,李有利.地貌学原理[M].北京:北京大学出版社,2005.1~246
10任美锷,刘振中.岩溶学概论[M].北京:商务印书馆,1983.1~331
11闫相宾,李铁军,张涛等.塔中与塔河地区奥陶系岩溶储层形成条件的差异[J].石油与天然气地质,2005,26(2):202~207
12顾家裕,周兴熙.塔里木盆地轮南潜山岩溶及油气分布规律[M].北京:石油工业出版社,2001.1~268
13王良俊,李桂卿.塔河油田奥陶系岩溶地貌形成机制[J].新疆石油地质,2001,22(6):480~482
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