Method for determining temperature field in temperature control phase change fracturing process

• Main Authors: CHEN WEIYU, WANG XIN, LI GAOFENG, LIU GUOHUA, DU JUAN, XIAO MENGMEI, CHEN XIANG, LUO ZHIFENG, ZHAO LIQIANG, YANG XIAOPING, ZHU RUIBIN, HUANG MULIAN
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS

The invention discloses a method for determining a temperature field in a temperature control phase change fracturing process. The method comprises the following steps: acquiring basic parameters; acquiring a temperature change rate caused by heat release of the fracturing fluid system; establishing a crack temperature field model in the fracturing process; physical parameters of the fracturing fluid system are obtained; and determining the temperature field based on the basic parameters, the temperature change rate, the crack temperature field model and the physical parameters of the fracturing fluid system. The influence of the chemical reaction heat of the phase change fracturing fluid on the temperature field can be accurately reflected, so that the more accurate temperature field is obtained. 本发明公开了一种确定温控相变压裂过程温度场的方法，包括：获取基础参数；获取压裂液体系放热引起的温度变化速率；建立压裂过程中的裂缝温度场模型；获取所述压裂液体系的物理参数；基于所述基础参数、所述温度变化速率、所述裂缝温度场模型以及所述压裂液体系的物理参数，确定所述温度场。本发明能够准确反映相变压裂液的化学反应热对温度场的影响，从而获得更加准确的温度场。