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在对火山岩天然缝隙进行压裂施工的过程中,压裂曲线表现为初期压降速度快,解释近井摩阻高、净压力高等特点,在进入到主压裂时,因为火山岩天然裂缝而引起压裂液超量滤失以及天然裂缝开启后对压裂液和支撑剂的分流作用,致使压裂目标主裂缝宽度变窄,支撑剂等运动难度增加而形成砂堵事故,所以在对此类类储层进行压裂施工,必须意识到好天然裂缝发育的问题才是压裂施工成功与否的重中之重,本文章通过对大庆火山岩裂缝性储层天然裂缝开启原理及测试压裂数据特征分析,提出适用于火山岩裂缝性储层的压裂改造的工艺手段和技术方法。
During the fracturing of volcanic rock natural fractures, the fracturing curve shows the characteristics of fast initial pressure drop, high near-well friction and high net pressure. Due to natural fractures of volcanic rocks when entering the main fractures, Fracturing fluid excess loss and the natural fractures after the opening of the fracturing fluid and proppant shunt, resulting in narrowing the main fracture of the target fracture width, proppant and other movements to increase the difficulty of forming a sand blockage accident, so in this category It is necessary to realize that the development of natural fractures is the most important issue for the success of fracturing. In this paper, the principle of open fractures of fractured reservoirs in Daqing volcanic rock and the test data of fracturing Characteristics analysis, proposed for the volcanic fractured fractured reservoir technology and technological means of fracturing.