深层特低渗透砂砾岩油藏开发技术政策研究  

Application of imitated horizontal wells in the development of deep-buried extra-low permeability oil reservoirs

作　　者：王倩[1] 

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《化学工程与装备》2017年第3期31-34,共4页Chemical Engineering & Equipment

摘　　要："十二五"以来,胜利油区新增探明储量中,深层特低渗透油藏比例逐年加大,至2015年已达到近50%,是未来胜利油田主要的开发接替阵地。该类储层渗透率低,导致油井投产产量低、递减快、注水补充能量困难;同时,储量丰度低,为增大单控储量、减少井数及投资,开发过程中,往往采用较大的注采井距,进一步加剧了注水的难度。针对该矛盾,胜利油田研发形成了仿水平井开发技术,本文以渤南油田义104块深层特低渗透砂砾岩油藏为例,在开发方式、开发层系、布井范围、井型以及井网井距等方面进行了开发技术政策界限论证,为同类型油藏的开发提供借鉴。The proportionn of deep-buried extra-low permeability oil reservoirs has increased year by year since 'Eleventh Five-Year' plan. And it has reached 50% in 2015. This will be the major position of development replacement for Shengli Oil Field in the future. Due to low permeability,such reservoirs have problems as low production,quick production decline and difficult water injection. Meanwhile they have low reserves abundance. So during the development it tends to use bigger well spacing to increase single-controlled reserves and reduce well numbers and investment.Water injection became more difficult.To solve this problem,Shengli Oil Field developed imitated horizontal wells developing technology. This paper demonstrated boundaries of the development technique and tactics in terms of development method, layer series of development, well spacing range, well type, well-net and distance and so on with an example of deep-buried extra-low permeability oil reservoirs of Yi 104 block,Bonan Oil Field. It would provide a reference to such reserves development.

关 键 词：仿水平井 特低渗透 大型压裂 注水开发 

分 类 号：TE34[石油与天然气工程—油气田开发工程]