吉木萨尔页岩油藏人工裂缝导流能力动态变化规律

为研究吉木萨尔页岩油藏人工裂缝导流能力动态变化规律,基于新疆吉木萨尔页岩油藏储层条件,采用钢板、岩板和粒径相同的陶粒和钢砂,开展不同闭合压力裂缝导流能力实验。结果表明：随着闭合压力增加,裂缝导流能力逐渐降低,可分为三个阶段。第一阶段,闭合压力小于20MPa支撑剂被压实；第二阶段,20~60MPa支撑剂随着闭合压力增加嵌入岩板深度增加；第三阶段30~60MPa支撑剂随着闭合压力增加破碎率逐渐增大。裂缝导流能力降低的因素主要有三种,支撑剂被压实、嵌入岩板和破碎,影响程度：压实＞嵌入＞破碎,大小分别为72.03%、14.28%、8.64%。

Study on dynamic change law of artificial fracture conductivity in Jimusaer shale reservoir

In order to study the dynamic change of artificial fracture conductivity in jimusar shale reservoir, based on the reservoir conditions of jimusar shale reservoir in Xinjiang, the conductivity experiments of fracture under different closed pressure were carried out by using steel plate, rock plate and ceramsite and steel sand with the same particle size. The results show that the fracture conductivity decreases with the increase of closing pressure, which can be divided into three stages. In the first stage, the closing pressure is less than 20MPa proppant is compacted; in the second stage, the depth of 20-60MPa proppant embedded in the rock plate increases with the increase of closing pressure; in the third stage, the 30-60MPa proppant increases with the increase of closing pressure. There are three factors to reduce the conductivity of fracture, the proppant is compacted, embedded in rock plate and broken, and the influence degree is: compaction > embedding > crushing, the size is 72.03%, 14.28% and 8.64% respectively.