The result shows that the optimal steam injection rate is 2.0ml/min, gas steam ratio is 1∶1 in this model. Co injection of gas and steam increases oil displacement efficiency by 10.33%.

The SAGD process is viable and the recovery factor is increased by 30.0% with the cumulative oil steam ratio of 0.296.The optimum well pattern is that horizontal wells with 20m apart are drilled between and beneath two rows of vertical wells.

The results of laboratory experiment show that steam injection pressure can be reduced obviously, cyclic production, oilsteam ratio and steam displacement efficiency can be improved by using SK-6 highefficiency viscosity reducer.

Both reperforation in production wells and simultaneously adding nitrogen with steam injection in the FSAGD process can increase drainage speed and cumulative oil steam ratio, but hardly increase the cumulative oil recovery.

The result showed that when steam injection was accompanied by viscosity reducer S - 5, the pressure of steam injection was reduced in development primary stage, the steam displacement efficiency was increased, water content in produced fluid was reduced,oil production and oil/steam ratio was increased.

Having higher water/steam ratio(4:1), Continuous Volume Expanding Evaporator PH-120 can gain significant economic and social benefits in recovering low concentration alkali solution.

This paper introduces the production practice investigation and shut cut calculation for tower operation conditions in order to enhance the treatment capability of CO 2 regeneration tower of CO 2 removal system in the technical retrofit of 300 kt/a ammonia plant and also briefly analyzes the carbon and steam ratio and operation pressure.

TDC3000 system executes conventional control and advanced control for SRTⅣ model HC cracking heater including coil temperature balance and flow rate control of total feed,temperature control of average COT, dilution steam ratio control,cracking heater start-up and shutdown sequence control and on-line coking program.

The software is used to predict the production indexes of steam soak in Fault Block Z411,including recovery factors,accumulated oil production,accumulated oil and steam ratio.

In both studies coking was reduced as the steam ratio increased.

Properties of refractories after exposure to high pressure gases: IV-Dependence upon CO /steam ratio

The influence of operating temperature and methane/steam ratio on the reforming characteristics, methane conversion and product selectivity, and the carbon deposition on the anode during reforming, has been determined for each anode.

The gas/steam ratio as indicator of heat transfer at the Solfatara fumaroles, Phlegraean Fields (Italy)

In order to simulate steamflood in oil reservoirs a set of similiarity groups has been inferres with equation analysis method and engineering judgement. On such a basis, a vacuum physical simulated test equipment has been built. Taking two blocks, East-2 in Block 6 and Block 9 in Kelamay oil field, as prototypes, scaled models were made. A series of simulated test was carried out. The commen characteristics of two reservoirs are: the crude oil is a medium-viscous oil(viscosity 430～3300 mPa. s), the dinsity...

In order to simulate steamflood in oil reservoirs a set of similiarity groups has been inferres with equation analysis method and engineering judgement. On such a basis, a vacuum physical simulated test equipment has been built. Taking two blocks, East-2 in Block 6 and Block 9 in Kelamay oil field, as prototypes, scaled models were made. A series of simulated test was carried out. The commen characteristics of two reservoirs are: the crude oil is a medium-viscous oil(viscosity 430～3300 mPa. s), the dinsity of the crude oil is rather light(0. 91-0. 92g/cm~3)and the net thickness of both reservoirs are thin(about 13m). Main objects are studied on:(1)the effect of steam injection rate on oil recovery and oil-steam ratio,(2)the effect of injected steam quality on oil recovery and oil-steam ratio,(3)the effect of location of the perforetion,(4)the effect of initial oil saturation. The results of study on the effect of the paramiters and the analysis of the experimental phenomena are presented in this paper.

With a set of similarity groups, a scaled physical model was fabricated, containingan injection well and two production wells and representing one eighth of an invertednine-spot steamflood pattern. The steam displacement, in particular, steam over-rideand production behaviour at different rates of injection is examined and the effect ofsteam injection rate on oil recovery and oil-steam ratio is studied in the model designedto simulate steamflood of a prototype reseivoir in Karamay oilfield. The results...

With a set of similarity groups, a scaled physical model was fabricated, containingan injection well and two production wells and representing one eighth of an invertednine-spot steamflood pattern. The steam displacement, in particular, steam over-rideand production behaviour at different rates of injection is examined and the effect ofsteam injection rate on oil recovery and oil-steam ratio is studied in the model designedto simulate steamflood of a prototype reseivoir in Karamay oilfield. The results of themodel study demonstrated that a severe gravity override of steam taken place even thoughwell spacing was more close and that an optimal value of injection rate existed at which areasonable oil recovery and oil-steam ratio would be obtained.

Steam drive in heavy oilfield development is on its beginning in our cou- ntry.This paper gives a one-dimensional,two-phase approximate calculation model for the estimation of the steam front and the advance speed of steam based on the heat balance principle.Based on the one-dimension analyses by N.D.Shutler etc,the equation of tangent at a point giving steam saturation at the position of the steam front on the curve of steam ratio has been esti- blished by means of the method of extremes.A complete set...

Steam drive in heavy oilfield development is on its beginning in our cou- ntry.This paper gives a one-dimensional,two-phase approximate calculation model for the estimation of the steam front and the advance speed of steam based on the heat balance principle.Based on the one-dimension analyses by N.D.Shutler etc,the equation of tangent at a point giving steam saturation at the position of the steam front on the curve of steam ratio has been esti- blished by means of the method of extremes.A complete set of empirical for- mular,including temperature,viscosity,heat content of the steam,latent heat of vaparization and other parameters has been derived.Computer proce- ssing has been realized for all above calculations.The paper gives a sample calculation also.