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储层天然裂缝形成机制多种多样 ,不同机制产生的裂缝分布不尽相同。经常遇到的情形是裂缝总体由同期或不同期的多种机制形成。文中提出评价裂缝形成机制的一种新思路 :由地质分析提出各种可能的主导裂缝形成机制 ,建立一级近似预测初期产量的线型裂缝分布模型 ,然后根据有关的生产数据求解上述模型 ,获得评价各种机制的信息。静北潜山裂缝性油藏的应用表明 ,卸荷和断层活动是该油藏储层裂缝的两种重要形成机制 ,所形成的裂缝在涉及范围内表现出相对的均匀分布 ,裂缝密集、遍布和不规则的特征直接与多期次和多方向的强烈断层作用有关。
The formation mechanism of natural fractures in reservoirs is varied, and the fractures distributed by different mechanisms are not the same. Often encountered the situation is the crack by the same period or different periods of a variety of mechanisms. In this paper, a new idea of evaluating the formation mechanism of cracks is put forward: all kinds of possible leading crack formation mechanisms are proposed by geological analysis, and a linear fracture distribution model of first-order approximate prediction output is established. Then the above model is solved according to the relevant production data, Evaluate information on various mechanisms. The application of the fractured reservoirs in the Jingbei Beishan shows that the unloading and fault activities are two important forming mechanisms of reservoir fractures in this reservoir. The fractures formed show a relatively uniform distribution in the involved range with dense fractures And irregular features directly related to multiple faults and multi-directional strong fault.