国内低渗透油气田高效开发钻完井关键技术发展现状  

Drilling and completion technologies for efficient exploitation of low-permeability oil&gas fields in China:A state-of-the-art review

作　　者：唐波[1] 唐志军[1] 耿应春[1] 唐洪林[1] 

机构地区：[1]中国石化胜利石油管理局钻井工艺研究院

出　　处：《天然气工业》2013年第2期65-70,共6页Natural Gas Industry

基　　金：国家科技重大专项"低渗透油气田高效开发钻井技术"(编号:2011ZX05022)

摘　　要：在我国剩余石油储量、探明天然气地质储量中,低渗透油气资源已成为主要勘探开发对象,高效钻完井成为最大限度获得经济效益的关键。为此,国内经过技术攻关试验,在钻完井关键技术方面取得了重要进展,形成了以下技术方法:①低渗透油气藏复杂结构井适应性评价方法、复杂结构井优化设计及产能评价技术和井身结构与井眼轨迹优化设计技术;②以五级分支井、径向钻孔、鱼骨状分支井等技术为核心的提高泄流面积钻井技术已进入现场应用阶段;③研制的以新型防水锁无黏土钻井液、防漏堵漏钻井液、新型生物完井液等为核心的钻完井液取得明显储层效果。但以提高完善程度为目的的水平井分段完井技术受制于完井装置、产品、工具缺乏,整体水平与国外相比尚有一定差距,目前仅形成了"免钻塞筛管顶部注水泥技术、水平井酸洗胀封一体化技术"水平井筛管分段完井核心技术。Among the residual oil reserves and proved natural gas geological reserves, low-permeability hydrocarbon reserves have become the main target for exploration and development of fossil fuels in China. But if expecting the maximum economic benefit from that, operators will mostly depend on efficient drilling and completion. In view of this, through technical research and pilot tests, an outstanding progress has been made in the following drilling and completion technologies and methods.. （1） an evaluation method for the adaptability of complex structured wells in low-permeability oil and gas reservoirs, complex structured well optimization and pro- ductivity evaluation technologies, and optimization technologies of wellbore structure and well track~ （2） the drilling technology in improving the discharge area, which focuses on such techniques as level-5 multilateral wells, radial drilling, and herringbone wells, has been applied on site~ and （3） the newly developed drilling and completion fluids like new water-blocking clay-free drilling fluid, lost circulation controlling fluid, and plugging drilling fluid, and new biological completion fluid, with which an obvious result has been obtained in reservoir protection. However, for lack of enough good completion devices, products and tools, the segregated horizontal well completion technology falls far behind foreign technologies in respect of improving perfection degree, so up till now, such key technologies have just been developed including plug-drilling-free screen top cementing, acid cleaning, and swell packing integration.

关 键 词：中国 低渗透油气田 钻井 完井 优化设计 泄流面积 储层保护 现状 差距 

分 类 号：TE257[石油与天然气工程—油气井工程]