煤层气勘探井井斜原因分析及预防措施  

Causes Analysis on Coal Bed Gas Exploration Well Slanting and the Preventive Measures

作　　者：李向荣 田智生 

机构地区：[1]陕西澄合天宇勘探建井工程有限责任公司,陕西渭南715200 [2]陕西省一九四煤田地质有限公司,陕西铜川727000 [3]国土资源部煤炭资源勘查与综合利用重点实验室,陕西西安710021

出　　处：《探矿工程（岩土钻掘工程）》2017年第7期19-23,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：陕西省2016年工业科技攻关项目"黄陇煤田转角地区低阶煤储层特征与煤层气勘探开发对策研究"(编号:2016GY-187)

摘　　要：在煤层气勘探井钻井中,经常发生井斜超标的现象,给后期钻井施工及煤层气抽排采带来许多不利影响,严重的还可能导致井眼报废。为此,分析造成井斜的主要原因,采取切实可行的预防井斜技术措施,对于提高钻井效率和工程质量,有效降低钻井成本,加快煤层气勘探开发有重要意义。结合煤层气钻井施工实践,就发生井斜的主要原因进行了简要分析,并提出了具体应对措施。In the coal bed was mad in the vertical shaft well drilling, has the well slanting exceeding the allowed figure phe-nomenon frequently, Pulls out the platoon for the later period well drilling construction and the coal bed gas to pick brings many adverse effects, serious also possibly causes the bore hole abandonment. Therefore, the analysis creates the well slanting primary causAbstract： In the coal bed gas exploration well drilling, the well slanting exceeding occurs frequently, which has adverse effects for the coal bed gas extraction, drainage and collection in later period, even can lead the bore hole abandonment. Therefore, the analysis on the primary causes of well slanting and taking the practical technical meas- ures to prevent well slanting are important to improve drilling efficiency and engineering quality, reduce drilling cost and speed up coal bed gas exploration development. Combined with the coal bed gas drilling practice, the primary causes of well slanting are briefly analyzed and the concrete preventive measures are put forward.

关 键 词：煤层气钻井 井斜 井斜角 井底位移 钻具级配 

分 类 号：P634.7[天文地球—地质矿产勘探]