摘要
鉴于海上某小断块油藏A17-b井区油藏单元剩余可采储量大,地层能量低,孤立性强,难以完善井区注采井网开发的开发状况,采用油田外输天然气回注,开展单井注天然气吞吐工艺措施,这是最为可行的提高采收率方法之一。文中针对海上某小断块油藏的地质开发特征,在对目前油井地层流体进行相态分析的基础上,通过天然气注入油藏流体膨胀实验,确定天然气吞吐的驱替机理;通过天然气吞吐长岩心驱替实验,说明衰竭后注天然气吞吐能有效提高原油采出程度,其中带30°倾角岩芯测试结果更优。
According to he high remaining recoverable reserves, low formation energy, strong iso- latisim of well A17--b region in a small fault block oil reservoir offshore, cannot complete development state of injection--production pattern development, using the reinjection of the natural gas and carring out the huff and puff technology measure of natural gas injection per well, it is one of the most feasible methods to enhance oil recovery. Aiming at the geological and development characteristics of the reservoir in WellA17--b area, based on the phase state analysis of the formation fluids, by the swelling experiment of nature gas and reservoir fluids to determine the drive mechanism of nature gas huff and puff, by the drive experiment with long cores of natuer gas huff and puff to illustrate natural gas huff and puff injection can enhance oil recovery well after depletion, of which the result of core test with 30 degrees is better than the others.
出处
《内蒙古石油化工》
CAS
2010年第6期101-103,共3页
Inner Mongolia Petrochemical Industry
关键词
天然气吞吐
提高采收率
室内实验
小断块油藏
Nature gas huff and puff
Enhanced oil recovery （EOR）,
In-- house experiments
Small fault block oil reservoir
