鄂尔多斯盆地靖边气田陕200井区马五2储层特征  

Characteristics of M 5_2 gas reservoir in Shaan 200 borefild of Jingbian Gas Field,Ordos Basin

作　　者：张宗林[1,2] 孙卫[1] 韩宗元[1] 徐波[1] 晏宁平[2] 何亚宁[2] 姬鹏程[2] 高辉[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室,地质学系,陕西西安710069 [2]中国石油长庆油田公司第一采气厂,陕西靖边718500

出　　处：《西北大学学报（自然科学版）》2008年第6期977-982,共6页Journal of Northwest University（Natural Science Edition）

基　　金：国家重点基础研究发展规划基金资助项目(2003CB214606)

摘　　要：目的对鄂尔多斯盆地靖边气田陕200井区马五21、马五22储层差异性进行对比分析。方法在研究区评价井、探井、生产井动态资料解释和前人研究工作的基础上,通过岩心观察、薄片分析、岩电解释的方法剖析差异性及其控制因素。结果马五21沉积时水体较深,沉积微相以云坪为主,但泥质含量较高,含膏云坪微相不发育;马五22沉积时水体较浅,含膏云坪微相很发育;马五21由于受泥质含量高和古沟槽携带上覆地层沉积物充填的不利影响,以破坏性成岩作用为主,孔隙和裂缝被严重充填;马五22古沟槽的发育过程对储层有建设性意义,溶蚀作用强烈,溶孔、微裂缝发育。结论沉积-成岩作用是两个储层产生差异的根本原因,马五21孔隙组合类型主要为孔-缝型和孔隙型,气层零星分布;马五22孔隙组合类型主要为孔-缝-洞型和孔-缝型,天然气富集,气层连片发育且厚度较大。Aim The muhidisciplinary analysis on the differential research of-M52^1 and M52^2 reservoir in Shaan 200 borefild of Jingbian Gas Field in Ordos Basin. Methods Relying on dynamic data of exploration wells, producible wells, appraisal wells and predecessors＇ research, the methods of core observation, thin section analysis,lithology-electric property interpretation were used to multidisciplinarily analyse the characteristics and contributing factor of on reservoir. Results M52^1 which is deposited in the deep water have higher content of muddy and the precipitation facie is mainly dolomite tidal fiat, but that of M52^1 is mainly sekkoko dolomite tidal fiat. The ancient valley-troughs carried muddy and deposit of overlying formations harmfully filling M52^1 so that the diagenesis havoc reservoir rocks. The cavalcade of the ancient valley-troughs in M52^2 benefit for reservoir rocks so that denudation increased a lot of corroded hollows and fractures. Conclusion The hydrocarbon pore volume of M52^1 is limitted and gas areas are very small, but in M52^2 the hydrocarbon pore volume is vegetal and thick gas bearing formations are much more, so M52^2 is good quality reservoir.

关 键 词：靖边气田 马五2^1和马五2^2储层 储层差异 沉积-成岩作用 古沟槽 

分 类 号：TE122.24[石油与天然气工程—油气勘探]