川西高庙子防塌钻井液技术研究及应用  

Anti-sloughing Drilling-fluid Technologies and Their Application to Gaomiaozi Structure, Western Sichuan

作　　者：李丽[1] 刘伟[2] 

机构地区：[1]中国石化西南油气分公司石油工程技术研究院,四川德阳618000 [2]中国石化西南油气分公司工程技术管理部,四川德阳618000

出　　处：《天然气技术与经济》2016年第6期27-29,61,共4页Natural Gas Technology and Economy

摘　　要：高庙地区施工井普遍出现长井段井壁失稳,影响安全顺利成井。通过实钻、测井分析,在室内试验基础上,明确了该地区井壁失稳层位。通过抑制封堵剂种类优选、加量优化和钻井液密度合理取值等研究,形成一套防塌钻井液技术,并在两口高庙水平井中进行了成功应用。现场应用表明,通过强化钻井液抑制封堵性,能使施工井的起下钻时间和下套管前通井时间有效缩短,提高钻井时效,降低复杂事故率。In Gaomiaozi area, borehole instability often appears in many long intervals, further affecting a safe and smooth drilling.The location or zone where there is borehole instability may be confirmed through actual drilling, well- logging analysis, and experiments. We implemented a series of study on the optimization of inhibitive plugging agent and the reasonable data point of drillingfluid density, developed some anti-sloughing drilling-fluid technologies, and applied these technologies to two horizontal wells in Gaomiaozi structure. Results show that adopting drilling fluid to inhibit plugging property can effectively shorten the time of both tripping and drifting before casing running, increase drilling efficiency, and decrease complex accidents.

关 键 词：高庙子构造 井壁稳定 钻井液 防塌技术 

分 类 号：TE254[石油与天然气工程—油气井工程]