Thereby, the piston structure can be arranged in an oilpressurepipe where gas and oil liquid are injected in advance to make reciprocating movement.
借此，该活塞构造可置入预注有气体及油液的油压管内行往复运动。
2
The calculation method of microcosmic starting pressure gradient is put forward based on the model of pipe flowing and rheological behaviour of conventional heavy oil.
利用微观尺度管流模型，结合普通稠油流变特征，提出了在考虑稠油流变性条件下微观启动压力梯度计算方法。
3
A method of calculating hydraulic and thermodynamic parameters such as flow, ratio of water in oil, pressure, temperature, specific heat for oil, gas, water pipe net is presented.