Measuring and testing – Borehole or drilling – Downhole test
Patent
1989-10-17
1991-10-01
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
E21B 4700
Patent
active
050522205
ABSTRACT:
A logging tool for measuring the fluid flow rate in a well, comprises a measuring pipe provided with a flowmeter, a packer device designed to derive the whole fluid flow into the measuring pipe, and an obstacle disposed in the fluid flow path, at, or downstream of, the exit of the packer for increasing, through the fluid flow action, the pressure of the fluid located upstream of the packer. The obstacle is e.g. a valve responsive to flowing fluid pressure on one side and to a biasing spring on the other side. The packer includes, in its bottom end designed to seal with the casing wall, an anulus seal defining a tubular chamber able to be inflated under the sole fluid action the annulus seal being made by two circumferential parts, facing one another, and fixed along their upper and lower perimeters. The tubular chamber is in communication with the fluid flow and is adapted to expand radially upon the application of fluid pressure while being substantially longitudinally non-extensible.
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patent: 4770212 (1988-09-01), Wienck
patent: 4800752 (1989-01-01), Piers
Bouchard John H.
Garrana Henry N.
Myracle Jerry W.
Schlumberger Technology Corporation
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