新疆H气田改建地下储气库的密封性评价  

Evaluation of sealing ability of underground gas storage converted from the Xinjiang H gas field

作　　者：庞晶[1] 钱根宝[2] 王彬[1] 杨作明[1] 韦雅[2] 李一峰[1] 

机构地区：[1]中国石油新疆油田公司勘探开发研究院 [2]中国石油新疆油田公司开发处

出　　处：《天然气工业》2012年第2期83-85,120-121,共3页Natural Gas Industry

摘　　要：中国石油新疆油田公司选定H气田改建地下储气库,而该气田是否适合改建地下储气库其密封性则是关键因素。为此,针对该区古近系紫泥泉子组气藏主要发育的4条近东西向南倾的逆断裂,就其断层的断距、断层两盘岩性的对接关系,结合生产动态特征定性研究了断层在侧向和垂向上的密封性,并采用泥岩涂抹因子计算法对断层的密封性进行了定量评价。此外,还利用地质综合分析法从宏观上对气藏盖层的密封性进行了评价,同时通过实验从微观角度研究了盖层的密封性(评价参数包括孔隙度、渗透率、突破压力、微观结构等)。结果表明:气藏断层和盖层的密封性好,符合改建地下储气库的要求。The PetroChina Xinjiang Oilfield Company selected the H gas field to be converted into underground natural gas storage,and as for this purpose the sealing ability is considered as the most important factor.Four near east-west-striking and south-dipping reverse faults occur in the Paleogene Ziniquanzi Formation of this gas field.Their fault throws and juxtaposition of lithologies across the faults are used,in combination with production performance,to qualitatively evaluate the vertical and lateral sealing ability of the faults.Meanwhile,the shale smear factor algorithm is applied to quantitatively evaluate their sealing ability.Moreover,the comprehensive geologic analytical method is also used to macroscopically evaluate the sealing ability of the cap rocks of this field,while mercury injection experiment is carried out to microscopically study the sealing ability of cap rocks.All the results show that the sealing ability of the faults and cap rocks are good enough to meet the requirements of converting the H gas field into underground natural gas storage.

关 键 词：准噶尔盆地 地下储气库 密封性 断层 盖层 泥岩涂抹因子 渗透率 断距 

分 类 号：P618.13[天文地球—矿床学]