哈拉哈塘油田自流注水技术先导试验

摘要

With sparse ground water resources in southern bank of the Tahe River in the Halahatang Oilfield,con-struction of water-injection facilities may involve heavy investment requirements and challenging water-injection operations. Such difficulties may present severe obstacles for promotion of production velocities and recovery ratios. Upper parts of the Odvicious reservoir formations in the Halahatang Oilfield contain confined aquifers (Devonian Donghe sandstone,Cretaceous )with significant potentials in non-target formations. Water contained in such for-mations may be used directly as the source for gravity water injection. With consideration to specific features of oil/gas layers in the Halahatang Oilfield and with consideration to available gravity water injection techniques around the world,an innovative gravity water injection technique suitable for on-shore oilfields has been developed. Pilot tests have been conducted in the Halahatang Oilfield with satisfactory water-flooding development performances a-chieved. Successful deployment of the technique may provide new ways for development of similar on-shore oilfields through water flooding.%哈拉哈塘油田塔河南岸地区地面水资源极其匮乏,注水配套设施投资大,注水开发困难,严重影响开采速度和采收率.哈拉哈塘油田奥陶系油藏上部非目的层发育储量巨大的承压水层(石炭系东河砂岩、白垩系),可以直接作为自流注水水源.根据哈拉哈塘油田油水层发育特点,在借鉴国内外自流注水技术的基础上,研究开发了一套能应用于陆上油田的自流注水新技术,并在哈拉哈塘油田进行了先导试验,取得了一定的注水开发效果.该技术的成功应用可为陆上类似油田的注水开发提供一条新思路.