Pressure-compensating openhole sampling tool
The Oilphase-DBR Single-Phase Multisample Chamber (SPMC) is a unique sampling system, used with the MDT Modular Formation Dynamics Tester, which recovers high-quality, pressure-compensated fluid samples during openhole logging operations. Up to six SPMC tools can be run with each MDT multisample module.
The SPMC sampler operates mercury free and eliminates sample flashing by using controlled displacement sampling while collecting reservoir fluid. The SPMC is used to acquire truly representative fluid samples for applications where the measurements require unaltered reservoir fluids. There is no dead volume, which ensures accurate results, including consistent GOR and saturation pressure data. Proper design of the sampling program can, in some cases, control drawdown to a few psi, allowing for representative samples to be collected from near-saturated reservoirs.
The pressure compensation feature provides sample recovery at pressures equal to or greater than reservoir pressure. Because the sample is retrieved to the surface in singlephase, it does not require lengthy recombination at the wellsite.
Samples acquired with the SPMC can provide critical parameters needed for optimal completion and production design.
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