Filter Press Half Area

The Half Area Filter Press is a compact version of the standard Filter Press and employs 1/2 size filtration area. Time and pressure requirements are the same as for the API filter press. Readings are converted to standard measure by multiplying by two as specified in the American Petroleum Institute, API Recommended Practice 13B-1 and 13B-2.

The Half Area Filter Press can be used in the conventional manner or in the upside down position to make measurements free of settling of the solids. Laboratory tests indicate that variation in filtration rate may be obtained due to solids settling. This unit makes possible a routine test to determine more nearly the true filtration and wall cake condition of the hole. The Half Area Filter Press has 1/2 the API filtration area and all filtrate volumes must be multiplied by 2 to correlate with API specifications.

The Half Area Filter Press consists of a filter cell body (cell) containing a pressurizing inlet, a pressure regulator, and a pressure gauge. A rubber diaphragm (boot) is supplied to contain the drilling fluid and separate it from the pressurizing gas. The boot allows the filter cell to be operated in any position. A reversible frog mounting is provided on the exterior of the cell to allow conventional filtration or upside down filtration. A wall mounting bracket is provided for supporting the filter press on a wall.