花场流三段储层保护封堵技术的研究  

Study on protection and plugging technology of Huachangliu third member reservoir

作　　者：任艳增[1] 谭晓峰[1] 廖宇春 王贵松[1] 史春涛 REN Yan-zeng;TAN Xiao-feng;LIAO Yu-chun;WANG Gui-song;SHI Chun-tao(Dagang Oilfield Petroleum Engineering Research Institute,Tianjin 300280,China;Southern Petroleum Exploration&Development Corporation,Haikou 570100,China)

机构地区：[1]大港油田分公司石油工程研究院,天津300280 [2]南方石油勘探开发有限责任公司,海南海口570100

出　　处：《精细与专用化学品》2022年第8期29-33,共5页Fine and Specialty Chemicals

摘　　要：花场区块流三段储层属于中低孔、中低渗、特低渗储层,渗透率分布范围广,黏土矿物含量中等偏低,具有中等偏强水敏损害,敏感性矿物极易受钻井液滤液水化膨胀,剥落运移堵塞孔喉。针对储层地质特点研制的快速封堵储层保护剂,在压差作用下储层保护剂可迅速进入储层孔喉并膨胀变形,对不同尺寸的储层孔喉进行快速封堵,对孔喉分布范围较宽的储层具有更好的暂堵作用。结果表明,该储层保护剂可快速降低钻井液的滤失量,瞬时滤失量和持续滤失量相比常规油保护分别降低52%和66.7%,渗透率恢复值可达85%以上。现场试验结果表明,井表皮系数为负值,储层保护效果较好。The reservoir of Liu-3 member in Huachang Block belongs to middle-low porosity, middle-low permeability and extra-low permeability.Permeability was widely distributed.Clay mineral content was medium and low.With moderate water sensitivity damage, sensitive minerals were easily affected by hydration and expansion of drilling fluid filtrate, and the pore throat was blocked by peeling and migration.A fast plugging reservoir protective agent developed according to the geological characteristics of reservoir.Under the action of pressure difference, the reservoir protective agent can quickly enter the reservoir pore throats and expand and deform, quickly plug the reservoir pore throats of different sizes, and have a better temporary plugging effect on the reservoirs with wide pore throats distribution.The experimental results showed that the reservoir protective agent can quickly reduce the fluid loss of drilling fluid, the instantaneous fluid loss and continuous fluid loss are reduced by 52% and 66.7% respectively compared with conventional oil protection, and the permeability recovery value can reach more than 85%.The skin coefficient of field test wells was negative, and the reservoir protection effect was good.

关 键 词：花场流三段 储层保护 砂盘封堵 

分 类 号：TE24[石油与天然气工程—油气井工程]