摘要
白驹油田油藏为复杂小断块，由于断块面积小而封闭、储集层低渗透、原油凝固点和粘度高而注水驱替难度大。注水井投注一段时间后往往出现憋压注不进的现象，受益油井见不到注水效果。单井注水吞吐开发模式一方面充分利用其砂岩的亲水性，根据亲水介质的自吸排油机理实现水驱，一方面补充地层能量，恢复地层压力，实现人工补充能量。不仅扩大了水驱波及半径、提高驱油效率，也提高无能量补充断块的采收率，该技术在高凝油藏的实际运用取到了较好的效果。
Most reservoirs of the Baiju oilfield are complex fault block pools with faults developed in the reservoir.The blocks are small and closed.the reservoir permeability is low , the pour-point and oil viscosity is high.which makes it difficult to displace oil by water looding. Soon after injectors are brought into production,the injection pressure is increased rapidly. Meanwhile,the injectivity decreases dramatically,which leads to little benefit to corresponding oil wells. The single well water injection stimulation development model on one hand to make full use of the sandstone of hydrophilicity, according to close water medium self-priming exhibit realize water flooding mechanism, on the one hand, the complement of formation energy, restore formation pressure, realize the artificial supplement energy. Not only extend the water flooding affected radius, improve oil displacement efficiency, also improve energy supplement no fault block recovery, this technology in high pour-point oil reservoir of prac- tical application get better effect.
出处
《石油化工应用》
CAS
2012年第3期12-14,共3页
Petrochemical Industry Application
关键词
复杂小断块
低渗透
高凝油
注水吞吐
提高采收率
complex fault block
low permeability
High pour-point oil
water injection-production
enhancing oil recovery
