And water is used in cold test. Through changing operating conditions, throat area and back pressure, the change rule of discharge coefficient and pressurerecoveryfactor were found.
During viscous crude oil steam flooding, a high pressure steam water separator is introduced to improve steam quality and then enhance recoveryfactor.
为在稠油热采蒸汽驱阶段提高注汽干度，进而提高稠油开采率，引进了高压汽水分离器。
3
Cyclic water injection increases swept volume through oil-water percolation effect and capillary pressure effect to improve water drive recoveryfactor.