压降试井可靠性判识方法探讨 .pdfVIP

学兔兔 第25卷2期 中 国 煤 炭 地 质 Vo1．25 No．02 2013年 2月 COAL GE0L0GY OF CHINA Feb． 2013 doi：10．3969~．issn．1674-1803．2013．02．06 文章编号：l674—1803(2013)2-0024—03 煤层气储层注入／压降试井可靠性判识方法探讨 安 杰，柳光伟 (黑龙江省煤田地质测试研究中心，黑龙江 哈尔滨 150046) 摘 要：注入／压降试井作为获取煤储层参数的一个重要手段，近年来获得了广泛的应用。但由于施工设计不合理、现 场操作不规范、模型选择不正确等问题，导致测试过程异常和测试结果失真，针对这些问题提出了几种判识方法：利 用储层压力值与末点压力值的关系来检验测试结果是否可靠；利用井储系数计算值与实测值的关系及双对数曲线 上出现的异常点来检验封隔器是否密封及井下关井是否成功。为了提高注入／压降试井测试过程和结果的可靠性， 建议采用推荐的检验方法对试井资料及解释结果进行分析判断．以便合理指导后续勘探开发工作。 关键词：煤储层；注入／压降试井；测试过程和结果；可靠性；判识方法 中图分类号：P618．11 文献标识码：A Probe into CBM Reservoir Injection／Pressure Drop Test Reliability Identification Method An Jie，Liu Guangwei (Heilongjiang Coal Geological Testing and Research Center，Harbin，Heilongjiang 1 50046) Abstract：The injection／p ressure drop test as an important means in coal reservoir parameters acquisition has achieved extensive application in recent years．But because of irrational construction design，nonstandard site operation and incorrect model selection issues，have caused test procedure anomaly and result lack of fidelity．In allusion to these issues，some of identification methods put forward：using relationship between reservoir pressure value and end point pressure value to check if the tested result reliable；using relationship between wellbore storage coefficient calculated value and measured value，as well as abnormal point come from double logarithm curves to check if the packer sealed up and if downhole close—in succeed．To promote i ecti0n／pressure drop test process