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MECHANISMS-BASED FRACTURE MODEL FOR GEOMATERIALS

机译:基于机理的土工材料断裂模型

摘要

A method for stimulating an earth formation according to a stimulation scenario for extracting hydrocarbons from the earth formation includes: selecting an earth formation stimulation scenario; applying a modified Mohr-Coulomb model that is configured to estimate behavior of a rock formation during the stimulation scenario, the modified Mohr- Coulomb model having a term representing dilatation in an out-of-plane orientation; predicting a fracture and damage network using the modified Mohr-Coulomb model; converting the fracture and damage network into permeability; simulating fluid flow in the earth formation using the permeability to predict hydrocarbon production; computing a value of a metric for hydrocarbon production for the selected stimulation scenario; iterating the selecting, applying, predicting, converting, simulating, and computing until the metric value meets or exceeds a threshold value; and stimulating the earth formation using a stimulation treatment system according to the stimulation scenario having the metric value that meets or exceeds the threshold value.
机译:一种根据用于从地层中提取碳氢化合物的刺激方案来刺激地层的方法,包括:选择地层刺激方案;应用修改的Mohr-Coulomb模型,该模型被配置为估计在刺激场景期间岩层的行为,该修改的Mohr-Coulomb模型具有表示面外取向上的膨胀的项;使用改进的Mohr-Coulomb模型预测断裂和损伤网络;将断裂和破坏网络转化为渗透性;使用渗透率模拟地层中的流体流动以预测碳氢化合物的产量;计算针对所选增产情景的烃生产的度量的值;重复选择,应用,预测,转换,模拟和计算,直到度量值达到或超过阈值;根据所述刺激场景的度量值达到或超过所述阈值,利用刺激处理系统对地层进行刺激。

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