摘要
Y油田自从投产以来,需要频繁洗井来维护油井生产,严重者甚至需要检泵。针对此问题开展了X衍射分析研究、岩石薄片分析研究,速敏研究。研究表明:该区储层以压嵌-孔隙式胶结为主,黏土矿物中以高岭石含量高,导致存在中等偏弱速敏。最终确定油井以临界产量生产,并定时井口清水反洗油井,取得了较好的效果。该治理对策的成功应用,对提高中低渗油藏的有效开发具有借鉴意义。
Since the Y oilfield has been put into production,it is necessary to flush oil well to maintain the production. Moreover some wells need to be pumped. In order to solve this problem,X diffraction analysis,rock thin section analysis and velocity sensitivity are studied. The results show that the reservoir is mainly composed of compression and pore cementation,and kaolinite content is high in clay minerals,which leads to the existence of medium and low sensitivity. Finally,the oil well produced at the critical production rate,and the oil well was backwashed by water. The method has achieved good results. The successful application of this strategy can be used for reference to improve the development effect of middle-low permeability reservoirs.
出处
《新疆石油天然气》
CAS
2017年第3期59-61,共3页
Xinjiang Oil & Gas
关键词
中低渗油藏
堵塞机理
速敏
临界产量
洗井
Middle-low permeability reservoir
Plugging mechanism
Flow velocity sensitivity
Critical flow rate
Well flushing
