干热岩地热开发钻井技术难点与对策  

Drilling Difficulties and Solutions for Hot Dry Rock Geothermal Development

作　　者：刘伟莉[1] 马庆涛[1] 付怀刚[1] 

机构地区：[1]中国石化胜利石油工程有限公司钻井工艺研究院

出　　处：《石油机械》2015年第8期11-15,共5页China Petroleum Machinery

基　　金：国家科技重大专项"低渗油气田高效开发钻井技术"(2011ZX05022)的部分研究内容

摘　　要：干热岩资源的勘探与开发首先需要解决深层、高温、硬质和易失稳地层的钻井问题。通过研究干热岩地质特征和赋存条件,提出了干热岩钻井施工的主要技术难点。调研了国内外油气钻井技术的耐高温性能指标,分析了高效破岩工具、随钻测控仪器、钻井液体系和固完井技术的适用性,并对气体钻井、干法固井和泡沫增压钻井等技术进行了可行性分析,在此基础上探讨了我国干热岩钻井技术的发展方向和亟待解决的若干问题,以期为干热岩地热开发的钻井方案优选和钻井技术攻关提供借鉴。The exploration and development of hot dry rock resources first need to address the drilling issues in deep, hot, hard and unstable formation?By studying hot dry rock geological features and storage conditions, the key technical difficulties of hot dry rock drilling are presented?The high?temperature resistance performance in?dex of domestic and foreign oil and gas drilling technologies are investigated?The applicability of high effective rock?breaking tool, MWD instrument, drilling fluid system, cementing and completion technology are analyzed, and feasibility analyses have been conducted on the gas drilling, dry wellbore cementing and pressurized foam drilling techniques?On the basis of above analyses, the future develop directions and issues urgently needed to be ad?dressed about domestic hot dry rock drilling technology are discussed, hoping to provide references for drilling pro?gram optimization and technology research for hot dry rock geothermal development.

关 键 词：干热岩 钻井技术 耐高温 高效破岩 钻井液 

分 类 号：TE242[石油与天然气工程—油气井工程]