缅甸D区块Yagyi-1x井控压钻井技术  

Managed Pressure Drilling for Well Yagyi-1x in Block D of Myanmar

作　　者：苏勤[1] 邢树宾[2] 

机构地区：[1]中国石化国际石油勘探开发有限公司,北京100083 [2]中国石化石油工程技术研究院,北京100101

出　　处：《石油钻探技术》2011年第4期25-28,共4页Petroleum Drilling Techniques

摘　　要：缅甸D区块极易发生井漏与坍塌等井下故障,严重影响了钻井时效。结合该区块的压力剖面和钻井实践分析认为,钻井液安全密度窗口窄是引发井下故障的主要原因。由于控压钻井技术是解决窄安全密度窗口安全钻进问题的有效技术手段,因此首先结合缅甸D区块的实际情况分析了控压钻井技术在该区块的适应性,并制定了Yagyi-1x井控压钻井技术方案。该井五开井段应用了控压钻井技术,有效缓解了漏失,解决了井壁坍塌的技术难题,提高了钻井时效(与Yagyi-1井相比,提高28%)。Block D in Myanmar is frequently faced with complicated drilling situations, such as well leakage and collapse etc. Through analysis of the pore pressure profile and drilling experience,it is believed that narrow safety drilling fluid window is the main reason. Managed Pressure Drilling （MPD） is an effective technical method to solve the narrow safety drilling window problem. This paper analyzed the applicability of MPD in this block. The implementation plan was developed for Well Yagyi-1x. In 5th spud, MPD helped reduce leakage and improve drilling efficiency, which shows this technique is efficient in solving the problem of narrow safety drilling fluid window.

关 键 词：控压钻井 安全密度窗口 井漏 井塌 缅甸D区块 Yagyi—1x井 

分 类 号：TE249[石油与天然气工程—油气井工程]