致密砂岩气藏水平井水平段优化  

Optimization of horizontal length of horizontal wells in tight sandstone gas reservoirs

作　　者：徐运动[1,2] 费世祥[1,2] 艾庆琳[1,2] 吕华[3] 吕建 文远超[3] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,710021 [2]低渗透油气田勘探开发国家工程实验室 [3]中国石油长庆油田分公司第一采气厂 [4]中国石油长庆油田分公司储气库管理处

出　　处：《低渗透油气田》2016年第2期87-89,128,共4页

摘　　要：目前水平井已成为提高单井产量的有效途径之一，特别在致密砂岩气藏的开发中，水平井比常规直井更具有优势，但水平井水平段合理长度受储层条件、经济指标和开发指标等诸多因素影响，确定比较困难。在比较地质类比统计法、矿场产量统计法、经济评价法等众多常规的水平段长度优化方法基础上，详细分析水平井产能公式，结合苏里格气田水平井实际资料，提出了多目标、多参数的水平段长度优化方法，并较好地应用在苏里格气田新开发区块S1区，为国内同类气藏水平井合理长度优化设计提供了借鉴。Horizontal well drilling has become one of the effective ways to increase individual well production. Especially in the development of tight sandstone gas reservoirs, horizontal wells have advantages over conventional vertical wells, but the reasonable horizontal length of horizontal wells is affected by the reservoir conditions, economic indicators, and the development indexes and many other factors. So it＇ s difficult to determine the reasonable horizontal length. Based on the comparison of many conventional optimization methods of the horizontal length, such as geologic analogies, mine yield statistics and economic evaluation methods, this paper analyzes the productivity formula of the horizontal well in detail, combines the actual data of horizontal wells in the Sulige Gasfield, and puts forward a muhi-objective and muhi-parameter optimization method for the length of the horizontal intervals. The method is applied to the newly developed block S1 in the Sulige Gasfield with good results. It provides a reference for the optimization design of the reasonable length of horizontal wells in similar gas reservoirs in China.

关 键 词：致密砂岩气藏 水平段合理长度 储层条件 经济指标 开发指标 

分 类 号：TE377[石油与天然气工程—油气田开发工程]