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让纳若尔油田在区域构造上属于哈萨克斯坦滨里海盆地东缘隆起带上的一盐下古生界隆起。该油田储量丰富,但采油速度低,采出程度低,储层纵向上的非均质导致油层动用程度较差,单井产量低。通过研究储层剖面动用程度,优选分层酸压裂油井,筛选适合于让纳若尔油田碳酸盐岩储层酸压裂的液体体系,优化投球分层酸压裂工艺技术,建立了让纳若尔油田投球分层酸压裂改造配套技术。2006~2009年完成了现场实施28口井,并取得了很好的增产效果。
The Najauar field is uplifted by the Lower Paleozoic Paleozoic in the uplift of the eastern margin of the Caspian basin in Kazakhstan. This oilfield is rich in reserves, but its oil recovery rate is low and its recovery level is low. The vertical heterogeneity in the reservoir leads to poor oil utilization and low single well production. By studying the degree of reservoir profile utilization, the fracturing oil fracturing well is preferably stratified by acid fracturing, and the fluid system suitable for acid fracturing carbonate reservoirs in the Navarre oilfield is selected to optimize the technology of pitching acid fracturing. Supporting technology for stratified acid fracturing in Najau Oilfield. From 2006 to 2009, 28 wells were completed on site, and a good stimulation effect has been achieved.