贵州织金区块煤层气单井控压产气阶段排采制度研究

贵州织金区块煤层气单井控压产气阶段排采制度研究2014年第8期中州煤炭第224期贵,kltI织金区块煤层气单井控压产气阶段排采制度研究邵凯旋(平煤股份二矿，河南平顶山467000)摘要：煤层气单井排采控压产气阶段的关键问题是如何合理制订排采制度。以贵州省织金试验区煤层气开发排采资料为依托，分析了织金煤层气藏特征，探讨了产气量、产水量、套压、液面深、井底流压等排采动态参数间的规律，提出了井底流压稳定值的计算方法，并研究了井底流压的控制，最后给出了适合该区块排采制度的建议。关键词：煤层气单井；控压产气；排采制度；井底流压中图分类号：TD712文献标志码：A文章编号：1003—0506(2014)08—0106—04ResearchonCoalbedMethaneSingleWellProductionSystemswithControlPressureinZhijinBlockofGuizhouProvinceShaoKaixuan(No．2CoalMine，PingdingshanTiananCoalCo．，Ltd．，Pingdingshan467000，China)Abstract：Howtodeterminethereasonableproductionsystemsarethekeyfactorsintheproductionstagesofthesinglecoalbedmethanewellwiththecontrolpressure．BasedontheproductiondataofthecoalbedmethanedevelopmentexperimentalzoneintheZhijinblockofGuizhouProvince，thecoalbedmethanereservoircharacteristicswereanalyzed．Thedynamicparameterswerediscussedduringtheproduction，includingthegasproductionrate，waterproductionrate，casingpressure，depthlevelofthefluidandthebottomholeflowingpressure．Anewcomputingmethodofstablebottomholefl