| 川东北铁山及周缘飞仙关组滩相储集体成因分析 |
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| 引用本文： | 吴斌,肖世洪,尹楠鑫,廖金华,李祥明,龚齐森,王锦喜.川东北铁山及周缘飞仙关组滩相储集体成因分析[J].地质科技通报,2015,34(5):75-80. |
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| 作者姓名： | 吴斌 肖世洪 尹楠鑫 廖金华 李祥明 龚齐森 王锦喜 |
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| 作者单位： | 1. 重庆矿产资源开发有限公司, 重庆 400060; |
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| 基金项目： | 国家科技重大专项子项目(2012ZX05018)中国石油科技创新基金研究项目(2012D-5006-0206) |
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| 摘 要： | 针对川东北铁山及周缘飞仙关组滩相储集体成因复杂的问题,采用宏观和微观相结合的方法研究表明,研究区主要储集空间类型有铸模孔、粒内溶孔、晶间孔和残余粒间孔。储集物性较差,以次生孔隙为主。储层孔渗关系不具单一特征,多为低孔、低渗的裂缝-孔隙型和孔隙-裂缝型储层。飞仙关组滩相储集体的成因主要受控于海平面的升降、构造作用及埋藏溶蚀作用。鲕粒滩体主要沿台地边缘发育,由于海平面的旋回升降,鲕粒滩体多期次暴露,发生大气淡水溶蚀作用,虽然压实作用和多期胶结作用使得孔渗性变差,但是在埋藏溶蚀和构造升降的共同作用下使得次生孔隙发育,极大地提高了储层的储集性能。
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| 关 键 词： | 川东北 储集体成因 铁山 飞仙关组 鲕粒滩 |
| 收稿时间： | 2014-03-11 |
Genetic Analysis of the Beach Facies Reservoir in Feixianguan Formation in Tieshan,Northeastern Sichuan and Its Peripheral Area |
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| Affiliation: | 1. Chongqing Mineral Resources Development Co., Ltd., Chongqing 400060, China;2. Chongqing Gas Group Co., Ltd., Chongqing 400060, China;3. Postdoctoral Research Workstation of Zhongyuan Oilfield Company, SINOPEC, Zhengzhou 450018, China |
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| Abstract: | The study adopts macro and micro methods to address the complex origin of beach reservoir in Tieshan and its peripheral area,northeastern Sichuan.The main reservoir space types are moldic,intragranular solution pores,intercrystal pores and residual intergranular pores.The reservoir properties are relatively poor,dominated mainly by secondary pores.while porosity/permeability relationship is not unique,which may be caused by the fissure-pore and pore-fissure types with low porosity and low permeability.The origin of Feixianguan beach reservoir is controlled together by eustatic sea level,tectonism,burial solution.Oolitic beach is distributed along the margin of platform.Due to eustatic cycle,oolitic beach experienced multi-episodic exposures,which was dissolved by atmospheric water.Since porosity and permeability were decreased by compaction and multi-episodic cementation,secondary pores flourished with the burial solution and tectonic fluctuation,which dramatically boosted the reservoir property. |
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