Temperature-pressure field coupling calculation model considering phase behavior change in CO_2 injection well borehole 考虑相态变化的注CO2井井筒温度压力场耦合计算模型
Effect of gas injection rate on borehole pressure in underbalanced drilling at low pressure 低压及欠平衡钻井中注气量对井内压力的影响
The results indicate that only increasing the gas injection rate is not certain to result in decreasing the bottomhole pressure, it depends on the balanced relationships between the hydrostatic pressure and flow resistance pressure in the given borehole gas / liquid two-phase fluid. 单纯增大注气量并不一定就必然会导致井内压力的降低,这取决于所给条件下构成井筒内气液两相流体的静液压力和流阻间的平衡关系。