改善储层的进攻型隐形酸完井液技术

Attacking chelating acid completion fluid for improving reservoir bed

王青宇 徐景生 吕开河 黄维安

Wang Qingyu Xu Jingsheng Lv Kaihe Huang Wei'an

中国石油大学石油工程学院, 山东东营 257061; 中海油田服务股份有限公司钻井事业部, 天津塘沽 300452

College of Petroleum Engineering, China University of Petroleum(East China), Dongying 257061; Drilling Division of China Oilfield Services Limited, Tanggu 300452

针对钻井、固井或压井、修井等作业过程中固相微粒和液相侵入损害以及各种作业液之间、各种作业液与储层流体、矿物之间的不配伍性造成的储层损害, 研制出了改善储层的进攻型隐形酸完井液。该完井液具有降低pH值, 消除无机、有机沉淀和屏蔽暂堵, 溶蚀岩心、改善储层等优点。在渤海QK17-2油田现场试验结果表明, 以YXA为主剂的隐形酸完井液, 可改善储层渗透性, 提高油田产能。

Aimed at the invasion damage of solid phase finely ground particle and liquid in operations of drilling,completion,well killing, and well repair and reservoir bed damage caused by incompatibility among operating fluids,reservoir fluids and mineral,an attacking recessive acid completion fluid for improving reservoir bed was developed.The completion fluid has many advantages such as reduce pH value eliminate organic and inorganic settle screen and temporarily plug,corrode core and improve reservoirs.Results of field test in Bohai QK17-2 oilfield show that the completion blended with chelating acid YXA can improve permeability of cores and increase oilfield productivity.

https://doi.org/10.3969/j.issn.1008-2336.2009.02.011