超深稠油井解堵技术研究与应用  

Research and Application on the Technology of Relieving Reservoir Plugging from Ultra-Deep Oil Well

作　　者：穆金峰[1] 吕有喜[1] 魏三林[1] 姜延庆[1] 刘玉民[1] 

机构地区：[1]吐哈油田公司鲁克沁采油厂,新疆鄯善838202

出　　处：《油田化学》2010年第2期149-152,共4页Oilfield Chemistry

摘　　要：鲁克沁油田是一个断块状超深稠油油田,油井平均单井日产量5.8 t/d,最高达18 t/d。但在开发过程中,部分新钻水平井产量达不到设计要求,且递减速度快;在注常温清水开发时,部分井投注后,注水压力上升较快,水井欠注严重。对稠油井堵塞机理的分析表明,稠油油水井堵塞主要为有机质堵塞,其次为无机质堵塞。在解除近井筒附近污染时,首先解除有机质堵塞,才可使酸液体系有效进入储层深部。用酸碱复合解堵配方,在油田油水井现场应用12井次,措施有效率100%。其中油井解堵2井次,累计增油约4800 t,平均单井增油5.9 t/d;水井解堵10井次,平均单井视吸水指数增加1.91 m3/d MPa,有效期大于300 d。Lukeqin oil field was an ultra-deep heavy oil reservoir with block.The average daily output was 5.8 t per well,up to 18 t per well.But in the development process,the output of some new horizontal well couldn＇t reach the design requirements together with rapid reduced velocity.When water with room temperature was injected in some wells,the water pressure increased rapidly and injection shortage occurred seriously.The main block of thick oil well was organic block and the secondary one was inorganic block based on the analysis of the block theory for the thick oil well.Relieving organic block around the shaft at first could make the acid system to access deep of the reservoir efficiently.The relieving reservoir plugging recipe of acid/alkali compound was applied in 12 wells on site and the efficiency was of 100%.Cumulative quantity of oil in 2 production wells was about 4800 t and the production oil of one well increased of 5.9 t per day in average.Valid period of 10 water injection wells was more than 300 days and the absorption index of single well increased of 1.91 m3 MPa per day in average.

关 键 词：稠油油藏 堵塞机理 酸碱复合 解堵 鲁克沁油田 

分 类 号：TE258[石油与天然气工程—油气井工程] TE358.5