任深2井溶洞性漏失堵漏工艺探索与实践  

Technology for Prevention of Mud Losses into Solution Caves in Well Renshen-2

作　　者：赵福祥[1] 罗宁[2] 赵德喜[1] 王东明[2] 王野[1] 

机构地区：[1]华北石油管理局钻井工艺研究院 [2]华北油田分公司勘探部

出　　处：《钻井液与完井液》2007年第3期27-28,共2页Drilling Fluid & Completion Fluid

摘　　要：任深2井是勘探潜山地层的探井,钻至井深3374.44 m时发生井漏,在井段3388.68-3389.73 m放空1.05 m,采用边漏边钻方法钻至井深3748 m后要求对上部地层进行堵漏,此时累计漏失清水12748.13 m^3。测井结果表明,该井在井深3446 m以上裂缝、孔洞较为发育。介绍了该井1.05 m大溶洞漏失的成功堵漏技术。Well Renshen-2 is an exploration well for exploration in buried hill formations.Mud losses occurred at well depth of 3374.44 m,and drilling beak occurred in 3388.68-3389.73 m.The well was drilled without mud loss control to a depth of 3748 m,at which the thief zones on the upper part of the well was required to be sealed off.The accumulated water losses had been 12748.13 m3 till then.This paper discusses the mud losses,well temperature logging,formation pressure logging and well logging using down hole TV,and the technology for controlling mud losses to caves 1.05 m in equivalent diameter.Well Renshen-2 has developed fractures and fissures,and solution caves.Technology for mud loss control in these formations is introduced in this paper.

关 键 词：漏失 溶洞性漏失 堵漏 任深2井 

分 类 号：TE282[石油与天然气工程—油气井工程]