胜利西部油气产量变化趋势及开发接替技术  

Trends in oil and gas production in western Shengli Oilfield and developing replacement technologies

作　　者：王学忠 WANG Xuezhong(Xinjiang Xinchun Petroleum Development Co.,Ltd.,SINOPEC,Dongying 257000,China)

机构地区：[1]中石化新疆新春石油开发有限责任公司,山东东营257000

出　　处：《复杂油气藏》2022年第4期44-51,共8页Complex Hydrocarbon Reservoirs

基　　金：国家科技重大专项“中西部盆地碎屑岩层系油气富集规律与勘探关键技术”(2016ZX05002)。

摘　　要：针对准噶尔盆地胜利西部持续上产面临的新挑战,以矿场资料分析为主,研究了准噶尔盆地胜利西部产量变化趋势及开发接替技术。与大多数稠油油田相比,春风稠油埋藏更浅,更难以建立有效的生产压差;油层厚度更薄,以至热采过程中热损失更大;原始状态下地层原油不能流动,直井蒸汽吞吐见到峰值产量,但产量递减迅速,经济效益差。在前人工作基础上,提出水平井、氮气、降黏剂、蒸汽吞吐复合开发技术,投产水平井500余口,建成百万吨级油田,在整装油田滚动扩边、小口径钻机浅孔取心辅助找油、油水过渡带微生物采油方面积累了经验。同时,油田整体评价、典型单元跟踪评价和64口高效井跟踪评价表明,老井产量递减日趋明显,急需攻关开发接替技术。春风稠油属于非常稀缺的环烷基稠油,不仅要求有效开发,而且必须实现高效开发和高采收率。开展了稠油热采井多轮次吞吐后热化学驱、井网加密等开发接替技术研究。此外,火山岩油藏、超深层及中浅层稀油油藏也是比较现实的开发接替阵地,值得特别关注。Because of the new challenges facing the sustained up-production in the western Shengli Oilfield in the Junggar Basin,the trend of production change and development succession technology are studied based on the analysis of mine data.Compared with most heavy oilfields,the Chunfeng heavy oil is more shallowly buried,making it more difficult to establish an effective production pressure differential;the oil layer thickness is thinner so that the heat loss during thermal recovery is greater;the formation’s crude oil can not flow in its original state,and the peak output of vertical well steam huff and puff is seen,but the production decreases rapidly and the economic efficiency is poor.Based on the previous work,it was proposed the compound development technology of horizontal wells,nitrogen,viscosity reducer,and steam huff and puff.More than 500 horizontal wells were put into operation,and a million-ton oilfield was built.Experiences have been accumulated in rolling edge expansion of packaged oilfields,shallow hole coring assisted by small-diameter drilling rigs to find oil,and microbial oil recovery in the oil-water transition zone.At the same time,through the overall evaluation of the oilfield,and the tracking evaluation of typical units and 64 high-efficiency wells,it is shown that the production decline of old wells is becoming more and more obvious,and there is an urgent need to tackle key problems and develop replacement technology.The Chunfeng heavy oil is a very scarce naphthenic one,which requires not only effective development but also efficient development and a high recovery rate.In addition,volcanic rock reservoirs,and ultra-deep and medium-shallow light oil reservoirs are also more realistic development replacement positions,which deserve special attention.

关 键 词：产量变化 开发接替 提高采收率 环烷基稠油 小口径钻机 浅钻取心 准噶尔盆地 

分 类 号：TE345[石油与天然气工程—油气田开发工程]