Dynamic Filter Press (DHFP-1)

Dynamic HPHT filtration testing determines if fluid is properly conditioned to drill through permeable formations. Test results include two numbers: the dynamic filtration rate and the cake deposition index (CDI). The dynamic filtration rate is calculated from the slope of the curve of volume versus time. The CDI is calculated from the slope ofthe curve of volume/time versus time.

The industry''s only true dynamic filtration system for conducting filter cake formation and permeability analysis for drilling fluids optimization

Utilizing a wide range of available filter mediums, the DYNAMIC HPHT filtration system can be heated and pressurized to provide the closest possible simulation of down-hole conditions. Several safety features have been designed into the system to protect the user and help ensure reliable test results.

The filter medium is a thick-walled cylinder with rock like characteristics to simulate the build up of filter cake on the formation. The filter medium is available in varying porosities and permeabilities to simulate down hole formations.

Filtration occurs radically from the inside of the filter core to the outside. At the sametime, the filter cake is formed on the inside of the filter core to simulate filtercake formation on the wall of a borehole. Following completion of a test,the filte cake can be inspected visually. A polished stainless steel shear bob runs through the central axis of the filter core. The shear bob is rotated to produce a concentric cylinder-type shear across the filtration surface.

The LCD display allows monitoring of real time test results, which are printed for

further analysis and filing of test results. The DYNAMIC HPHT filtration system also features an interface port, which allowsdownloading of ASCII formatted data to a personal computer.The system is fully automatic with a built-in computer controller.