天然气地质学

川东北飞仙关组鲕滩储层发育的主控因素和成因模式

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  • (中国石油勘探开发研究院廊坊分院,河北 廊坊 065007)
杨威(1971-),男,高级工程师,博士,主要从事碳酸盐岩沉积储层方面的研究工作.

收稿日期: 2006-12-15

  修回日期: 2007-02-02

  网络出版日期: 2008-06-20

基金资助

国家“十五”科技攻关项目(编号:2001BA606A04)资助.

MASTER CONTROLLING FACTORS AND GENETIC MODE OF OOLITIC SHOAL RESERVOIR DEVELOPMENT IN FEIXIANGUAN FORMATION NORTHEASTERN SICHUAN BASIN

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  • (Langfang Branch of Research Institute of Petroleum Exploration and Development, CNPC, Langfang 065007, China)

Received date: 2006-12-15

  Revised date: 2007-02-02

  Online published: 2008-06-20

摘要

四川盆地东北地区飞仙关组的鲕滩气藏是该盆地最近的勘探重点。指出该类气藏储集岩主要有残余鲕粒白云岩、鲕粒灰岩和泥-粉晶白云岩,其中残余鲕粒白云岩是最好的储层;主要的孔隙空间为粒间孔、粒间溶孔、粒内溶孔、晶间孔、铸模孔和裂缝;储层为低孔低渗性裂缝-孔隙型,发育程度主要受沉积相、白云石化作用、溶蚀作用和裂缝控制;优质储层主要由台缘鲕滩发生混合水白云石化作用和埋藏溶蚀作用所形成—台缘鲕滩沉积初期发育大量的原生粒间孔,后经过压实和胶结作用,孔隙几乎全部被破坏,再经过混合水白云石化作用和埋藏溶蚀作用的改造,形成了大量的次生孔隙。

本文引用格式

杨 威,魏国齐,金 惠,张 林,沈珏红,吴世祥 . 川东北飞仙关组鲕滩储层发育的主控因素和成因模式[J]. 天然气地球科学, 2007 , 18(2) : 192 -196 . DOI: 10.11764/j.issn.1672-1926.2007.02.192

Abstract

In recent years, the oolitic shoal gas reservoir in the Feixianguan Formation in fonnortheastern Sichuan basin is an important exploration target. The reservoir rocks include contain oolitic limestone, micritic dolomite and residual oolitic dolomite, of them the residual oolitic dolomite is the best reservoir. The pore space consists of intergranular pore, intergranular dissolvedpore, intragranular dissolved pore, intercrystalline pore, moldic pore and fracture. The gas reservoir is a fractured and porous reservoir with low porosity and low permeability. The development of the reservoir is controlled by sedimentary facies, dolomitization, corrosion and fractures. High grade reservoir is the fringing oolitic beach undergone mixed water dolomitization and burial corrosion(Primary pores produced in the early period of fringing oolitic beach sediment were completely destroyed by compaction and cementation, and lots of secondary pores were produced by the mixed water dolomitization and burial corrosion.

参考文献

[1]王一刚,刘划一,文应初,等.川东飞仙关组鲕滩储层分布规律勘探方法 与远景预测[J].天然气工业,2002,22(增刊):14-19.
[2] 杨雨,文应初.川东北开江-梁平海槽发育对T1f鲕粒岩分布的预测[J].天然 气工业,2002,22(增刊):30-32.
[3] 魏国齐,杨威,张林,等.川北飞仙关组鲕滩储层白云石化成因模式[J].天然气地球科学,2005,16(2):162-166.
[4] 魏国齐,陈更生,杨威,等.覆盖区碳酸盐岩层序界面的识别和应用[J].石油勘探与开发,2003,30(6):68-71.
[5] 魏国齐,陈更生,杨威,等.川北下三叠统飞仙关组“槽台”沉积体系及演化[J]. 沉积学报,2004,22(2):254-260.

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