元坝气田超深高含硫气井测试及储层改造关键技术

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。

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

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...