摘要
随着我国深水油气勘探开发战略的逐步推进,深水井测试及生产过程中的一些安全问题引起了人们的高度关注。在深水或其它水下区域的完井作业中,部分隔离液或钻井液通常会被封闭在水泥返高线至井口之间的一段套管环空中。当这些流体通过油管的热油流或气流加热时,其产生的热力学膨胀会使封闭环空内产生非常高的压力,继而造成套管和油管柱的挤毁损坏。本文概述了这种高的环空圈闭压力形成的原因、研究历史及缓解方法。
With the gradual advance of exploration and development of deepwater oil and gas in China, some safety problems oI testing and production in deepwater wells have aroused people＇s great concern. In deepwater or other sub-sea completed wells, partial isolation fluid or drilling fluid are commonly trapped in casing annuli above the top-of-cement and below the wellhead. When these trapped fluids are heated by the passage of hot produced oil and gas, the thermal expansion can create very high pressures to cause the collapse of casing and tubing strings. In this paper, the reasons for formation of high trapped pressure in the annulus were outlined, and its research history and mitigation methods were discussed.
出处
《辽宁化工》
CAS
2016年第12期1509-1510,共2页
Liaoning Chemical Industry
关键词
深水钻井
圈闭压力
APB
缓解措施
deepwater drilling
trapped pressure
APB
mitigation measures
