已封固发现天然气气井重钻接替井的配套技术研究  

INTEGRATED TECHNICAL RESEARCH ON RE-ENTRY FOR CASED GAS WELLS

作　　者：钟水清[1,2] 徐进[3] 甘升平[4] 廖长永[4] 杨令瑞[4] 胡应富[1] 兰祥华[4] 熊继有[2] 

机构地区：[1]中国石油西南油气田公司 [2]油气藏地质及开发工程国家重点实验室.西南石油大学 [3]中国石化石油工程西南有限公司 [4]中国石油天然气集团公司川庆钻探工程公司

出　　处：《钻采工艺》2009年第3期20-22,37,共4页Drilling & Production Technology

基　　金：国家自然科学基金项目(编号:50674077);863计划项目(编号:2006AA09Z312)的资助

摘　　要：天然气钻探风险大,钻遇高渗气层,尤其是钻遇高导流能力的缝洞系统,高压、高产天然气流易于导致严重井控失控的险情出现,或钻井、完井工程条件的缺陷存在,潜在着更大的险情隐患。为了气田和环境的安全,逼迫压井—封井,压井是封井的先决条件,堵漏又是压井的前提。然而对于勘探地质而言,钻接替井是为了再现地质重大发现,与钻常规工程故障接替井有所区别。为此,提出将钻接替井的方式划分为一次和二次钻成,同井场和异井场钻成四种类型;进而分析了新851井和清溪1井钻接替井的成功范例,揭示出全面技术配套的发展方向,有助于高效再现更多天然气储量的重大发现。High pressure and high yield gas is easy to cause the serious well control problems or high flow conductivity of fissure and cave system has potential drilling risk because of some unsoundness existent in drilling and completion.In order to the safety of gas field and environment,the preternatural gas well must kill well or plug well.The methods of re-entry for cased gas wells are divided into primary drilling,secondary drilling,same and different well field drilling,and the successful examples of re-entry for cased gas wells about Xin 851 well and Qingxi 1 well were analyzed,and the development direction of integrated technology on re-entry for cased gas wells was put forward.

关 键 词：天然气 重大发现 压井封井联作 定向钻井 范例解析 技术配套 

分 类 号：TE28[石油与天然气工程—油气井工程]