元坝气田超深高含硫气井测试及储层改造关键技术  

Key techniques in well testing and reservoir stimulation for ultra-deep sour gas wells in the Yuanba Gas Field

作　　者：唐瑞江[1] 李文锦[1] 王勇军[1] 蒋人义[1] 代俊清[1] 

机构地区：[1]中国石化勘探南方分公司

出　　处：《天然气工业》2011年第10期32-35,116,共4页Natural Gas Industry

基　　金：中国石化重点研究项目"川东北高温高压高含硫井试气工艺配套技术"部分成果

摘　　要：四川盆地东北部元坝气田具有高温、高压、高含H2S特性,储层埋藏深且非均质性强,由此带来了测试工艺复杂、储层改造困难、井控安全风险大等困难。在元坝超深高含硫气井测试实践中,逐步形成了材质优化选择、一体化管柱多功能APR测试、多级压力控制、测试制度优化、快速返排、井控工艺、堵漏压井工艺、地面流程安全控制技术及海相储层改造工艺技术,从而满足了元坝气田"三高"气井试气的需要。现场应用结果表明,已施工完的16口井55层,获得工业气流14口井23层,未发生一起安全事故,有效保障了元坝气田勘探的顺利进行,取得了安全、优快、环保的工作效果和重大社会经济效益。The Yuanba Gas Field in the northeasern Sichuan Basin is featured by high temperature,high pressure,high contents of H2S,great burial depths,and strong heterogeneity of reservoirs,resulting in difficulties in well testing & reservoir stimulation and risks in well safety.In view of this,we developed a series of technologies adaptable for well testing and reservoir stimulation in this field,including the optimization and selection of tubular goods,the multifunctional integrated tubular string adopting annulus pressure responsive(APR) testing tools,multi-level pressure control,test system optimization,rapid flowback,well control,well plugging,well killing,surface safety control,and acid fracturing treatment.Field application shows that among the drilled and completed 16 wells targeting pay zones(55 in a total number of beds),14 wells targeting pay zones(23 in a total number of beds) obtained commercial gas flows with no accidents.

关 键 词：四川盆地东北部 元坝气田 超深气井 高含硫 测试 酸化压裂 储集层 改造 技术 

分 类 号：P618.13[天文地球—矿床学]