摘要
随着勘探领域的拓展，对低压低渗透油气藏的勘探逐渐增多，使保护油气层的工作日益显得重要，特别是对钻井液与完井液提出了更高的要求。川西南地区各油气田气层压力现已大大低于原始地层压力，极易受到勘探过程中各种流体的损害。对此应采取的措施是加强钻进过程中的油气层保护，改进处理气层井漏的方法，科学控制钻井液密度，减少产层的浸泡时间；同时还应加强对超低密度钻井液、完井液的研究、应用与试验工作，重视对油气层保护的人才培训。
With exploration activity expanding, more and more low pressure low-permeability reservoirs are explored, and so reservoir protection is becoming very important, higher requirement is put forward on drillingfluid and completion fluid. Oil & gas have been produced for years so that reservoir pressure is much lower than original formation pressure, and reservoir is easily damaged by invasion of various fluids. So various measures should be adopted, such as strengthening reservoir protection during drilling; improving gas-zone lost circulation treatment; controling drilling fluid density scientifically, reducing soak time of payzone, and meanwhile strengthening research, testing and application of ultralow-density drilling fluid and completion fluids.
出处
《钻采工艺》
CAS
1999年第3期26-28,共3页
Drilling & Production Technology
关键词
油气层
低渗透油气藏
油层保护
四川
西南地区
oil and gas reservoir, low permeability reservoir, low pressure reservoir, drilling fluid, completion fluids. southwest Sichuan area
