Establishment of reasonable water injection pressure of sandstone reservoir;

Cause analysis and countermeasure for high water injection pressure in Xin V block of Jilin oilfield.;

Aiming at the problem of high water injection pressure and low displacement efficiency,the laboratory research on decreasing injection pressure by new surfactant system has been in process with analyzing the reasons of high injection pressure.

One reason is the high steam injection pressure and the low steam quality in the new block, another reason is the low recovery factor and the low oil/ steam ratio in the multi - steam huff and puff block.

Some oil wells have high steam injection pressure, low steam quality and poor stimulation effect.

Penetration radius and grouting pressure in fracture grouting;

Study the influence of the proportion of grout and grouting pressure to the.

According to the test results of grouting to mitigate subsidence, the variation law of grouting pressure during grouting is analyzed, including stage of pressure quickly reducing, the pressure burdening stage and the stage of pressure gradually increasing.

Through field application, the results show that the technology has features of lowering gas injection pressure, deepening the depth of injection point and savi.

Influence of the injection pressure to plastic mould core offset;

The minimal melt temperature and injection pressure can be predicted very quickly by solving the model using finite difference method when injection time, injection temperature, and mold temperature were assigned.

This paper researched on the filling flow process of mobile phone housing mould by simulation, and mainly discussed how pressure dependence of melt viscosity and part wall thickness affected injection pressure.