E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/5
E21B 49/08 (2006.01) E21B 47/06 (2006.01)
Patent
CA 1289463
Abstract A well fluid sampling apparatus for sampling fluids from a formation reservoir in a well. The sampling apparatus comprises a body portion defining a large sampling chamber therein and at least one sampler module disposed in the sampling chamber. The sampler module is adapted for sepa- rately entrapping a volume of fluid as the sampling chamber fills. A sliding sampler valve is moved to open a sampler port allowing formation fluid to enter the sampling chamber. The sampler module has a metering piston therein which auto- matically closes after a predetermined volume of fluid has entered a sampler module chamber defined in the sampler module. The metering is accomplished by a chamber filled with a viscous liquid which must be discharged through a small orifice as the piston moves in response to fluid pressure in the sampling chamber. The viscous fluid is discharged into an air chamber. Testing gauges may be posi- tioned adjacent each of the sampler modules to measure and record fluid pressure and temperature as desired. A surface drain nipple may be connected to a portion of the sampler module for moving the metering piston to an open position for draining the fluid from the sampler module chamber. A drain collar and drain nipple may be attached to the sampler module adjacent the hole therein for draining through a drain line and appropriate valving. The sampling apparatus may be used as a portion of a perforate, test and sample tool which also includes a packer and perforating guns. No portion of the fluid entrapped in the sampler goes above the packer or enters the tool string.
569694
Company Halliburton
Swabey Ogilvy Renault
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