定向井分层注水工艺研究与应用

针对定向井分层注水的现状,对定向井分注工具和分注管柱进行了研制和合理配置。在分注管柱中使用JSY341-115斜井封隔器和液力扶正器,解决了常规封隔器在斜井和水平井段中封隔器坐封胶筒不居中的技术难题;配水器的水嘴投捞采用液力投捞原理,解决了配水器在定向井中应用水嘴投捞难的技术难题;分注管柱实施锚定或支撑到人工井底,克服了管柱因注水压力不平稳等原因造成的管柱蠕动现象;分层测试实现了实际工况各单层分测:即测分层注入量和分层压力。

RESEARCH AND APPLICATION OF SEPARATE LAYER WATER INJECTION TECHNOLOGY IN DIRECTIONAL WELL

Considering the status of separate layer water injection in directional well, the injection tools and pipe string are developed and collocated reasonably. The use of JSY341- 115 slant-hole packer and hydraulic centralizer in the separate injection pipe string has solved the non-centered problem of packing element of the conventional packer in the slant hole or in the horizontal well. The use of hydraulic pulling and running principle in the operation of nozzle of water injection mandrel has solved the technical problem of difficult pulling and running of nozzle in the directional well. The anchoring or set to the artificial bottom hole of the separate injection pipe string has solved the creep of the pipe string resulted from the unstable water injection pressure. The test of the actual working condition of individual layer, that is, the test of water injection amount and pressure of individual layer, has been realized by means of separate layer test.