CAJ | 학술논문

在煤矿采动区地面煤层气开发钻井下套管过程中，为精确下放生产套管到指定位置，解决钻杆下放生产套管难提钻杆的问题，根据地面井钻井下套管的特点，研制了一套精确下放生产套管装置，较好地解决了精确下放生产套管的问题。在寺河煤矿、成庄煤矿及岳城煤矿地面煤层气开发钻井下套管试验中，煤矿采动影响后该悬挂装置极好地连接了二开套管与生产套管，保持了井身的畅通性，为煤层气抽采提供了保障，取得了较好的效果。
재매광채동구지면매층기개발찬정하투관과정중，위정학하방생산투관도지정위치，해결찬간하방생산투관난제찬간적문제，근거지면정찬정하투관적특점，연제료일투정학하방생산투관장치，교호지해결료정학하방생산투관적문제。재사하매광、성장매광급악성매광지면매층기개발찬정하투관시험중，매광채동영향후해현괘장치겁호지련접료이개투관여생산투관，보지료정신적창통성，위매층기추채제공료보장，취득료교호적효과。
In order to run the production casing to the specified position in the process of ground well drilling and casing running of coal-bed methane development in the mining area and solve the difficult problem encountered in production casing running and ground well drilling, a set of devices for accurately running the production casing was developed according to the features of ground well drilling and casing running, which better solved the problem of accurately running production casing. In the tests of ground well drilling and casing running in Sihe, Chengzhuang and Yuecheng coal mines, this suspension device can connect the second-section casing pipes and production casing pipes exactly and keep the ground well unimpeded, this thus provided the guarantee for coal-bed methane extraction and better benefits were obtained.