榆树林油田树322井区压裂改造潜力研究

Study of Potential of Fracturing Treatment in Area of Well Shu322 in Yushulin Oilfield

针对大庆榆树林油田树322井区油藏地质和现有开发井网与裂缝方位,利用ECLIPSE油藏模拟软件,进行了多参数下的压裂增产增注的油藏模拟,进而优化了该区进行压裂改造的裂缝参数。结果显示,在储层有效渗透率分别为0.05、0.1、0.2和0.3mD时,一类油井的裂缝长度分别为120、90、45和30m;二类油井的裂缝长度分别为120、90、75和75m;三类油井的裂缝长度分别为120、120、90和90m;水井压裂在上述对应有效渗透率下的裂缝长度分别为60、45、45和30m;裂缝导流能力为20～30μm2.cm。油水井优化裂缝参数条件下的产量预测表明在该区进行整体压裂改造具有巨大潜力,为后期该区开发方案的调整提供了技术支撑;也为该区进行的压裂施工方案设计提供了优化的裂缝参数目标。

Aiming at the geological condition,the existed development well pattern and fracture phases in Area of Well Shu322 in Yushulin oilfield,using ECLIPSE,the software for reservoir simulation,we did some reservoir simulations of multi-parameter fracturing treatment for increasing production rate and injection rate,and so that optimized the fracture parameters for fracturing treatment in this area.The results showed that if the effective permeability of reservoir is 0.05,0.1,0.2 and 0.3 mD respectively,the length of fracture would be 120,90,45 and 30 m respectively in first class wells;120,90,75 and 75 m respectively in second class wells;and 120,120,90 and 90 m respectively in third class wells;and for fracturing in water wells,corresponding to above effective permeability,the length of fracture is 60,45,45 and 30 m;the conductivity of the fracture is 20～30 μm2?cm.Production rate prediction under the condition of optimized fracture parameters showed that there is great potential to conduct integral fracturing treatment;and which provides technical guide for later adjustment of development program in this area and target parameters for optimizing fracturing treatment design in this area.