滨里海地区活跃浅层气的钻井防控技术  

Caspian Sea Well Control Technique for Active Shallow Gas Drilling

作　　者：刘任远[1] 王华[1] 韦代延[1] 

机构地区：[1]中国石化国际石油勘探开发有限公司,北京100083

出　　处：《石油钻探技术》2010年第5期76-80,共5页Petroleum Drilling Techniques

摘　　要：浅层气的防控一直是钻井中的难题,钻遇浅层气后若采取措施不当,极易酿成严重事故。滨里海W区块在埋深300500 m的白垩系地层有活跃的浅层气,WS-3井在钻井过程中就发生了浅层气井喷失控、烧毁井架的事故。中国石化国际石油勘探开发有限公司（SIPC）接管FIOC公司后,在该区块已经钻井30多口,积累了大量的施工经验,并探索出一套适合哈萨克斯坦明泰克油田的浅层气钻井预控技术,尽管其中的W-4井和W-18井发生了井喷事故,但是均压井成功,未造成严重后果。根据FIOC公司所属W区块发生的浅层气井喷实例,分析了发生井喷的原因,并制订了该地区控制并消除井喷危害的技术方案,对其他地区安全钻进浅层气有一定的借鉴作用。Blowout in shallow gas well drilling is a difficult problem,for it can easily lead to serious accidents if measures are not taken properly.There exists active shallow gas at depth of 300～500 m in cretaceous formation in Block W,and FIOC left Kazakhstan due to blowout of well WS-3,which resulted in derrick burning.SIPC has successfully drilled more than 30 wells in this block after taking over FIOC in 2004.A set of method of shallow gas well blowout prevention and management in Kazakhstan Ming Taike Oilfield was developed and valuable experiences were accumulated.Well blowout occurred in Well W-4 and Well W-18,a set of technical measures was used successfully so that serious consequences were not occurred.Using the well blowout in Block W of FIOC as an example,the reason for blowout was analyzed,the techniques to control and eliminate well blowout were developed.Valuable experiences for safety drilling were accumulated and references for other area of shallow gas drilling were provided.

关 键 词：浅层气 井漏 井喷 井控 滨里海盆地 

分 类 号：TE28[石油与天然气工程—油气井工程]