摘要
砂砾岩储层微观水驱油试验表明:水驱时水线推进易在砾石处发生绕流、卡断现象,造成水驱采收率低于一般砂岩储层。水驱剩余油主要在注入水尚未波及到的中低渗透层和发生注入水“海恩斯跳跃”处。注聚合物驱可降低储层非均质影响及“海恩斯跳跃”形成的剩余油饱和度,提高注水采收率12％以上。建议双河油田扩大高温聚合物试验区块。
The microscopic water -oil displacement experiments indicate that owing to there are the flow around a body and interruption of water front at conglomerates, recovery factor in glutenite reservoirs of Shuanghe Oilfield is lower than ordinary sandstore oilfield, residual oil distributes mainly in area unswept of medium and low permeability and occurred * Haines Jumps' place. Through pollumer injection can reduce effects of heterogeneity of reservoirs and the residual oil saturation by forming of 'Haines Jumps', arises recovery factor over 12%.
出处
《河南石油》
1996年第4期14-17,4-5,共4页
Henan Petroleum
关键词
水驱
束缚水
剩余油
油田开发
砂砾岩
Shuanghe Oilfield, (Glutenite), Water drive, Irreducible water, Remaining oil
