利用酸化技术提高煤储层渗透率的室内初探  

Preliminary Indoor Experiments on Enhancing Permeability Rate of Coal Reservoir by Using Acidification Technology

作　　者：赵文秀[1] 李瑞[2] 乌效鸣[2] 汤继丹 王坤[2] 王于健[2] 

机构地区：[1]华北油田采油工艺研究院,河北062552 [2]中国地质大学,湖北430074

出　　处：《中国煤层气》2012年第1期10-13,共4页China Coalbed Methane

基　　金：国家重点基础研究发展计划("973")项目"煤层气开发多分支水平井控制机理"(编号:2009CB219608)和"国家科技重大专项"经费联合资助

摘　　要：酸化已是油气田勘探开发中提高油气产量的重要手段,较小规模的酸化措施有可能极大的提高油气产能。但是,在煤层气开发中却极少有对煤储层进行酸化的相关报道。在油气井酸化的基础上,结合煤储层本身物理、化学特征,室内实验对利用酸化技术清除煤层矿物质进行了初探。结果表明,对煤岩心进行酸化能明显改善其渗透性,渗透率可提高20倍以上。因此,将酸化技术应用于清除煤层矿物质是有价值的,并且有待开展更深入、更广泛地研究。Acidification is an important means for increasing gas production in exploration and development of hydrocarbon field. Small scale acidulation measure can greatly enhance the hydrocarbon production capacity. However, there is very little report about acidification of coal seam reservoir in development of coalbed methane. Based on acidulation of oil gas well, and taking into consideration of physical and chemical charac- teristics of coal reservoir, preliminary indoor experiment was made to remove the mineral matters in coal seam by applying acidifying technology. The results indicated that acidification of coal/rock core will evidently im- prove permeability of seam, and the permeability rate may rise over 20 times. Therefore, application of acidifi- cation technology is of value in scavenging the mineral matters in coal seam. This technology in remained to be further deepened and studied.

关 键 词：酸化 煤层气 煤岩心 渗透率 孔隙度 

分 类 号：P618.13[天文地球—矿床学]