刘家沟底部钻井液漏失的封堵.pdfVIP

第47卷 中 国 井 矿 盐 Vol.47 CHINA WELL AND ROCK SALT 刘家沟底部钻井液漏失的封堵 王永全，崔秀忠，吕利强 (中国煤炭地质总局华盛水文地质勘察工程公司，河北邯郸056002) 摘 要 ：我单位在施工延2 井时，刘家沟组和石千峰组交面发生漏失，采用常规材料和方法进行封诸，只能 短时间凑效，多次封诸下来，花费巨大，而且不能承受大比重饱和盐水泥浆的高液柱压力，导致无法继续钻进。后 使用可控凝肢憋压诸漏，一次成功，只至终孔，没有再次发生漏失现象。经过比对，用凝肢类材料封诸此漏层效果 好、成本低、工期短，优于其它材料和方法。 关键词：刘家沟；漏失；凝肢；憋压诸漏 中图分类号：TS32 文献标识码 ：A 文章编号= 1001-0335( 2016) 05-0026-03 Blocking of Drilling Fluid Leakage in the Bottom of Liujiagou Wang Yongquan , Cui Xiuzhong , Lv Liqiang (China Coal Geology General Bureau Huangsheng Hydrogeological Investigation Engineering Company , Handan Heibei 056002) Abstract : During the construction of YanEr well , there exsits leakage between the Liujiagou group and Shiqianfeng group . If adopting conventional materials and methods to block , it only can block in a short time . After several times of blocking , the expenditure is huge, and it cannot sustain the high fluid column pressure of heavy proportion saturated brine mud. As a result , it has to stop the continuing drilling . Afterwards , use controlled gel to stop leakage till the drill-hole finishe , and do not happen leakage for the second time . After the comparison , using gel to block this type of leakag is efficient , and has low cost and short construction time . This method is better that other matreials and ways . Keywords : Liujigou , leakage, gel , block leakage 花费几百万元的屡见不鲜 ，因堵漏无果而弃孔的现 1 工程概况 象也时有发生 。 我单位 于 2015年承担了 “ 陕西省延川县永坪 2 . 1 钻进遇漏及普通封堵情况 地区石盐矿普查 ” 项 目 延 2 井的施工任务 ；本井属 延 2 井钻 进 到 1846m 处发生漏失 ，漏失量达到 于盐岩探采结合井 ，井型为 直 井 ；目的是查明工作