致密砂岩气藏水平井整体开发关键地质技术——以苏里格气田苏东南区为例  

The Key Geological Technology for Horizontal Wells Overall Development in Tight Sandstone Gas Reservoirs:Take the Sudongnan Area of Sulige Gasfield for an Example

作　　者：费世祥[1,2] 王东旭[1,2] 林刚 潘晓丽 王勇[1,2] 张保国[1,2] 徐运动[1,2] 刘雪玲[1,2] 

机构地区：[1]中国石油长庆油田公司勘探开发研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]中国石油长庆油田长南气田开发项目部,陕西西安710018 [4]中国石油长庆油田第一采气厂,宁夏银川750000

出　　处：《天然气地球科学》2014年第10期1620-1629,共10页Natural Gas Geoscience

基　　金：低/特低渗透油藏有效开发技术研究--长庆油田油气当量上产5 000万吨关键技术研究(编号:2011E-1306)资助

摘　　要：苏里格气田是中国目前发现并投入开发规模最大的天然气田,也是中国致密砂岩气田的典型代表,其特点是"低渗透率、低压力、低丰度、薄储层、强非均质性"的特征,单井产量低、建井数量多,压力下降快、稳产难度大,直井开发经济效益较差。为提高单井产量,改善气田开发效果,提高开发效益,在分析总结苏里格气田水平井先导性试验成功经验的基础上,以苏东南区为研究对象,率先开展致密砂岩气藏水平井整体开发技术攻关。从水平井参数优化、整体部署、轨迹优化及精细导向等多个关键技术研究出发,运用地震、地质及气藏等多学科攻关,形成了一套致密砂岩气藏水平井整体开发关键技术。应用该项技术系列建产1个水平井立体开发区、2个水平井整体开发区和1个大丛式水平井井组开发区,为苏里格气田水平井开发起到示范作用,值得在致密砂岩气藏规模化推广。Sulige Gasfield is the largest natural gas field which has ever been discovered and put into development in China.It is a typical representative of tight sandstone gas field,characterized by＂low permeability,low pressure,low abundance,thin reservoir,significant heterogeneity＂,at the same time,it is accompanied with low single well production,large well quantity,fast pressure drop and stable production difficulty,poor economic beneficial result of vertical wells development.In order to increase single well production,improve gas field development result,and increase economic benefit,the article tackled key problems of horizontal wells overall development technical research in tight sandstone gas reservoirs by analyzing and summarizing successful experience of horizontal wells pilot test in Sudongnan area.Based on horizontal wells parameter optimization,overall deployment,trajectory optimization,fine oriented and many other key technologies,we established a set of horizontal wells overall development key technologies in tight sandstone gas reservoir by using earthquake geology reservoir etc.multi-subjects.Using this technology series,we formed one horizontal stereo development area,two horizontal overall development area and one large cluster horizontal wells group development area,set an example for Sulige Gasfield horizontal wells development,which is worthy of large-scale extension for tight sandstone gas reservoirs.

关 键 词：致密砂岩气藏 苏里格气田 苏东南区 水平井整体开发 关键地质技术 参数优化 整体部署 轨迹优化 地质导向 

分 类 号：TE32[石油与天然气工程—油气田开发工程]