钻井液与完井液2012，Vol.29Issue(2)：41-43,3.
东营北带砂砾岩体裂缝伤害与保护
摘要
Abstract
The glutinite blocks of the north zone of Dongying depression is kind of low-porosity, low permeability reservoir. The dominant factor of reservoir permeability is fractures, and drilling fluid is the first fluid contacting with formation fluid, so the low damage drilling fluid system should be used to reduce formation damage as far as possible. The laboratory research results show that, formation fractures are damaged easily by polysulphonate drilling fluid system, especially the inorganic solid particles and organic particles plug the formation fractures and make flowback difficult. The hollow glass bead drilling fluid can be used to obtain near balance or under balance drilling, because there is no solid damage to the reservoir for the drilling fluid system, and the major additives can absorb on rock surface, also the glass beads can support fractures of the formation, furthermore, the permeability recover value of the core acquired 85.43% with this drilling fluid system.关键词
裂缝性储集藏/砂砾岩体/无黏土钻井完井液/漂珠/防止地层损害/东营北带Key words
Fractured reservoirs/ Glutinite/ Clay free drilling fluid/ Hollow glass bead/ Formation damage prevention/ North zone of Dongying Depression分类
能源科技引用本文复制引用
郑成胜,蓝强,张敬辉,李公让,刘宝锋..东营北带砂砾岩体裂缝伤害与保护[J].钻井液与完井液,2012,29(2):41-43,3.基金项目
国家重大项目“低渗油气田高效开发钻井技术”课题四“低渗油气田储层保护技术”(201IZX05022-004). （201IZX05022-004）
