CAJ | 학술논문

地质导向技术能有效提高煤层气水平井施工成功率和煤层钻遇率，但由于其具有导向参数多、工艺要求高、易受地质因素影响等特点，使其在实际应用中还存在诸多难点。以柳林区块内某多分支水平井为例，针对该井现场地质导向作业面临的资料缺乏、参数受欠平衡钻进干扰、煤层结构复杂等难点，建立合适的地质导向模型，优选合理的导向参数和导向系统，对地质导向技术在实际应用中的工艺与流程进行了系统论述。实践表明，地质导向技术在该井的应用效果良好：煤层钻遇率达到了93.1%；截至目前，该井的产气量达8600m3/d，且还在进一步提升。
지질도향기술능유효제고매층기수평정시공성공솔화매층찬우솔，단유우기구유도향삼수다、공예요구고、역수지질인소영향등특점，사기재실제응용중환존재제다난점。이류림구괴내모다분지수평정위례，침대해정현장지질도향작업면림적자료결핍、삼수수흠평형찬진간우、매층결구복잡등난점，건립합괄적지질도향모형，우선합리적도향삼수화도향계통，대지질도향기술재실제응용중적공예여류정진행료계통논술。실천표명，지질도향기술재해정적응용효과량호：매층찬우솔체도료93.1%；절지목전，해정적산기량체8600m3/d，차환재진일보제승。
The geological orientation technology can improve CBM horizontal well construction success rate and coal seam intersecting rate effectively. But since its too many orientation parameters, high technological requirements, easy to be impacted by geological fac-tors thus brought on many difficulties in practical application. Taking a multi-lateral horizontal well in Liulin block as an example, in allusion to the well site geological orientation operation faced with hard nuts of data insufficient, parameters interfered by underbal-anced drilling, complex structural coal seams etc. therefore, have established appropriate geological orientation model, optimized ratio-nal orientation parameters and orientation system, systematically expounded geological orientation technology practical application technology and process. Practice has shown that application result of geological orientation technology on the well is excellent; coal seam intersecting rate is 93.1%. Up to date, CBM yield amounted to 8600m3/d, and still further steps up.