Automated Multi-Sample Porosimeter and Permeameter (MSPDP)

Measurements

When measuring the permeability, the reservoir, plumbing, and sample are filled with gas. After sufficient Time for thermal equilibrium, the downstream outlet valve is opened to initiate the pressure transient. When the upstream pressure has reduced to about 85% of the fill pressure, it can be assumed that a smooth pressure profile within the core sample has been established, and then the data collection (pressure change as a function of time) is initiated. An upstream gas reservoir of calibrated volume is connected to the calibrated manifold volume by means of a valve. An in-line pressure transducer accurately reports the core holder inlet pressure. A valve located at the core holder outlet vents the system to the atmosphere. The unsteady-state method enables to determine simultaneously the Klinkenberg permeability (k∞)

Porosity is measured based on Boyle’s Law. Gas source is injected into a reference volume at the constant pressure. The inlet valve is then opened so that the gas can flow into the core holder. As the gas invades the chamber and the core’s pores, the system pressure declines. The stabilized value is recorded and the pore volume can be determined.

Features

• Fully automatic measurements of porosity and permeability for multiple 14 samples
• Auto control of applying and releasing confining pressure
• Auto loading and uploading of samples
• Confining pressuring up to 10,000 psi
• PMI software for system control and data acquisition

Specification