北美地区页岩气水平井井距现状及发展趋势  

Current situation and development trend of horizontal well spacing for shale gas in North America

作　　者：丁麟 程峰 于荣泽[1,2] 邵昭媛 刘佳琪[3] 刘官贺 DING Lin;CHENG Feng;YU Rong-ze;SHAO Zhao-yuan;LIU Jia-qi;LIU Guan-he(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;National Energy Shale Gas R&D(Experiment)Center,Langfang 065007,China;Research Institute of Petroleum Exploration&Development,Jilin Oilfield Company,Songyuan 138000,China;Jilin Jigang Clean Energy Co.,Ltd.,Songyuan 138000,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]国家能源页岩气研发(实验)中心,河北廊坊065007 [3]吉林油田勘探开发研究院,吉林松原138000 [4]吉林吉港清洁能源有限公司,吉林松原138000

出　　处：《天然气地球科学》2020年第4期559-566,共8页Natural Gas Geoscience

基　　金：国家科技重大专项项目(编号:2017ZX05035004)资助.

摘　　要：水平井井距是经济高效开发页岩气的核心参数之一,不仅影响单井及平台开发效果,还直接决定整个气藏的储量动用和经济效益。针对北美地区各典型页岩气田水平井井距现状进行了广泛深入调研,分析了北美页岩气井距的发展趋势,梳理了页岩气井距优化的研究进展,得到如下结论:①北美各页岩气水平井井距主要集中在180~420 m之间,以201 m和402 m这2种井距为主;②2011-2017年间北美页岩气井距整体呈现减小趋势,但Marcellus、Utica、Haynesville和Barnett等主要气田的井距值均有所增加;③在小井距开发模式强烈的井间干扰和产量递减影响下,北美页岩气水平井井距存在逆向增大的变化趋势;④井距优化的主要研究方法包括现场先导试验、现场生产数据分析拟合以及数值分析模拟方法,最新研究得出的合理井距范围约为300~400 m。Horizontal well spacing is one of the principal parameters for the economical and efficient development of shale gas reservoirs,which can not only influence the well and platform development performances,but also can directly determine the reserve producing degree and the economic performance of whole gas reservoir.An extensive investigation of the horizontal well spacing for shale gas reservoirs in North America was provided.Development tendency of the North America shale gas horizontal well was analyzed and the current research statusof well spacing optimization was illustrated. Conclusions were obtained as follows:(1)The horizontal well spacing of typical shale gas reservoirs in North America ranges from 180 m to 420 m,with two typical well spacing of 201 m and 402 m.(2)Average well spacing data decreased slightly during 2011 to 2017,while for some main shale gas reservoirs like Marcellus,Utica,Haynesville and Barnett the well spacing increased.(3)Due to the influence of inter-well interference and rapid production decline in small-spacing development pattern,the horizontal well spacing data in North America indicates a slight increase in recent years.(3)Horizontal well spacing optimization includes field pilot test and surveillance,production data analysis,numerical and analytical simulation. Latest researches give an optimal well spacing for the North America shale gas reservoirs that ranges from 300 m to 400 m.

关 键 词：北美地区 页岩气 水平井井距 变化趋势 井距优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]