清洁完井工艺在超深高温高压气井的应用及认识  

Clean completion and its application to ultra-deep,high-temperature,and high-pressure gas wells

作　　者：向文刚 何银达 吴云才 胡超 赵鹏[1] 周忠明 何川江 王春雷 吴镇江[2] XIANG Wengang;HE Yinda;WU Yuncai;HU Chao;ZHAO Peng;ZHOU Zhongming;HE Chuanjiang;WANG Chunlei;WU Zhenjiang(Dina Oil and Gas Development Department,PetroChina Tarim Oilfield Company,Korla,Xinjiang 841000,China;Exploration De-partment,PetroChina Tarim Oilfield Company,Korla,Xinjiang 841000,China)

机构地区：[1]中国石油塔里木油田公司迪那油气开发部,新疆库尔勒841000 [2]中国石油塔里木油田公司勘探事业部,新疆库尔勒841000

出　　处：《天然气技术与经济》2021年第3期49-53,共5页Natural Gas Technology and Economy

摘　　要：为了充分认识清洁完井工艺在塔里木盆地库车山前构造迪那2气田高温高压气井的应用效果,以D1井下入带配置可溶孔塞筛管的清洁完井管柱为研究对象,分析了高温高压气井常规完井管柱无法充分替出井底重浆造成的后期生产制约因素及打捞风险。研究结果表明:(1) D1井完井后放喷测试,日产天然气量为48.6×10^(4)m^(3)、日产油量为46.7 m^(3),远超地质设计要求指标;(2)清洁完井管柱酸化前的完整性在施工中完全达到设计要求,清洁完井工艺在库车山前的应用是成功的。结论认为:(1)清洁完井管柱下至射孔底界附近,能充分替出井底重浆,实现清洁完井,同时可实现完井后的储层均匀改造;(2)可有效延长生产中砂埋周期,同时保留后期连续油管冲砂作业的完整井筒条件;(3)在后期修井,清洁完井管柱可不倒扣分段高效打捞,降低作业风险;(4)清洁完井工艺在库车山前的成功应用,为塔里木盆地库车山前超深高温高压气井清洁完井工艺的进一步推广应用打下了坚实的技术基础。In order to sufficiently clarify the application effect of clean completion to high-temperature and high-pressure(HTHP)wells in Dina 2 gasfield,Kuqa pediment structure,Tarim Basin,some clean completion string equipped with soluble plug screen in D1 well was taken as objectives to analyze both constraints and fishing risks during the late development,which might be caused by insufficient replacement of bottomhole heavy slurry with conventional completion string.Results show that(1)after the completion of D1 well,both gas and oil production during blowout test is 48.6×10^(4) m^(3)/d and 46.7 m^(3)/d,respectively,much higher than expected in geological design;and(2)the integrity of clean completion string before acidizing meets design requirement completely,indicating successful application of clean completion to Kuqa pediment structure.In addition,it’s concluded that(1)when the clean completion string is run to near perforation bottom boundary,the bottomhole heavy slurry can be replaced sufficiently to realize clean completion as well as uniform reservoir stimulation after completion;(2)a sand-buried cycle during production can be prolonged effectively while the integrity wellbore conditions for the later sand washing of coiled tubing are maintained;(3)during the later workover,segmented efficient fishing can be realized while the clean completion string doesn’t have to be backed off,so as to reduce operation risks;and(4)its successful application to Kuqa pediment structure may lay solid technical foundation for further popularization in other ultra-deep HTHP gas wells in this area.

关 键 词：清洁完井工艺 溶孔塞 高温高压气井 塔里木盆地 库车山前构造 迪那2气田 

分 类 号：TE257[石油与天然气工程—油气井工程]