户部寨地区Es3^2—Es3^4段压裂损害机理与地层保护  

The Mechanism of Fracturing Damage and Formation Protection of Es_3~2～Es_3~4 Interval in Hubuzhai Area

作　　者：王翃宇 郎学军[2] 刘洪升[2] 

机构地区：[1]中原石油勘探局勘探事业部 [2]中原石油勘探局油层改造技术研究所

出　　处：《断块油气田》2000年第2期57-59,共3页Fault-Block Oil & Gas Field

摘　　要：针对户部寨地区Es23—Es4 3 段地层特点 ,分析了压裂过程中的地层损害机理。由于该地区粘土矿物含量高、毛细管半径小、地层物性差 ,使用常规压裂液施工时 ,会造成粘土膨胀、微粒运移、水锁与贾敏效应、粘滞性流体滞留及固体颗粒堵塞等多种地层损害。在室内研究的基础上 ,提出了降低成胶剂水不溶物含量、控制液体滤失、提高液体表面活性、强化破胶、稳定地层粘土等地层综合保护措施。Aimming at the formation feature of Es 2 3～Es 4 3 interval in Hubuzhai regi on in Zhongyuan oil field,the mechanism of formation damage in fracturing was an alyzed.When normal fract uring fluid is used,the high clay mineral content,small capillary diameter and b ad formation physical property can cause clay swelling,particles migration,water locking,Jamin effect,vicous fluid retention and solid particle plugging.On the basis of lab research,this paper put forward comprehensive formation protection measures to reduce content of the matter being insoluble in water in gelling agent,controll ing liquid filtration,increasing liquid surface activity,enhancing gel break and stabilizing formation clay. [WTHZ]

关 键 词：地层损害 表面活性 渗透率 水力压裂 压裂液 

分 类 号：TE258[石油与天然气工程—油气井工程] TE357.12