Based on the balance of the fluid in the pipeline and the annular space,I study the pressure of the hole in the bottom and the pressure loss of the both under the laminar flow condition.

Study of seabed pore water pressure based on in-situ test and numerical simulation;

New model for calculating bottom hole pressure of multiphase flow in annulus of underbalanced straight well;

Slug flow appears very often in swabbing well and usually results in complexity of bottom hole pressure change,and swabbing recovery may make bottom hole pressure more unforeseeable.

By this method, variation of gas productivity with time under the fixed bottomhole pressure can be derived as well the variation of gas well bottomhole pressure at the fixed production rate.

The bottomhole pressure control technology is one of the key technologies in underbalanced drilling.

During the period of pressure build-up, response to the bottomhole pressure has the characteristics of formation per.

Application and development of foot pressure measurement technology;

Research on change of foot pressure in young people during fast walking

Furthermore,the work of foot pressure measuring system is developed with the advantages of low cost and easy to operate.

Analysis of the plantar pressure distribution of the normal Chinese adult;

Measurement and clinical application of normal plantar pressure;

Dynamic plantar pressure characteristics of children with spastic cerebral palsy in gait;