摘要
文中针对A区块致密油水平井出现的“产量下降”和“液面不降、功图气影响、泵况正常”等生产数据相矛盾的问题,通过洗井、调防冲距、取样、压力测试等工作证明井筒内存在泡沫油。为了保证致密油高效开发,对致密油水平井的泡沫油产生规律及界限进行了研究分析,发现月递减率出现负值时,出现泡沫油。结合关井试验得出产量随流压下降而下降的生产规律。
in this paper,the production data of the tight oil horizontal Wells in block A are contradictory to each other in terms of production data,such as production decline,liquid level decline,power chart and gas image,and normal pump condition.The foam oil in the wellbore is proved through well washing,flushing distance adjustment,sampling and pressure testing.In order to ensure the efficient development of tight oil,the production rules and limits of foam oil in tight oil horizontal Wells were studied and analyzed.It was found that foam oil appeared when the monthly decline rate was negative.In combination with the shut-in test,the production rate decreases with the flow pressure.
作者
赵志强
ZHAO Zhiqiang(No.9 Oil Production Plant in Daqing Oilfield)
出处
《石油石化节能》
2019年第9期4-5,I0001,共3页
Energy Conservation in Petroleum & PetroChemical Industry
关键词
致密油
水平井
泡沫油
递减率
流压
tight oil
horizontal well
foamy oil
Lapse rate
flowing pressure
