控制压力钻井技术在缅甸Yagyi-1x井的应用  

The application of MPD on well Yagyi-1x in Myanmar

作　　者：陈小锋[1] 吴超[1] 令文学[1] 白彬珍[1] 

机构地区：[1]中国石化石油工程技术研究院,北京100101

出　　处：《石油钻采工艺》2011年第4期6-9,共4页Oil Drilling & Production Technology

基　　金：中国石油化工股份公司石油工程管理部先导项目"控制压力钻井技术应用先导实验"(编号:SG1007)部分内容

摘　　要：控制压力钻井技术是通过精确控制井底压力,解决复杂地层钻井难题的一项先进钻井工艺,能够提高钻井效益,降低钻井成本。缅甸D区块钻井液密度安全窗口窄,地层倾角较大,裂缝、孔隙发育,易发生井涌、井漏、垮塌等复杂情况。Yagyi-1x井是部署在缅甸D区块的一口评价井,五开井段采用控制压力钻井技术,通过精确控制钻进、接单根、起下钻等不同工况下的井底压力,成功解决了该井段安全密度窗口窄的问题,同时减小了压持效应,提高了机械钻速。Managed Pressure Drilling（MPD）is an advanced drilling technology, featured by solving complicated drilling difficulties through precise control of bottom-hole pressure. In Block D of Myanmar field, due to the narrow mud weight window, large strata dip, and developed fractures and pores, well kick, mud leakage and well-bore collapse is likely to happen. Well Yagyi -1x is an appraisal well, and in the fifth spud of drilling, MPD is taken to precisely control the bottom hole pressure under different working conditions, such as drilling, pipe connection, and tripping. The issue of narrow mud weight window is solved successfully by applying MPD technology, and in the meantime, the chip hold down effect is decreased and the drilling rate is increased.

关 键 词：控压钻井 精确控制 井底压力 缅甸D区块 

分 类 号：TE242[石油与天然气工程—油气井工程]