Formation pressure-testing apparatus
Patent
·
OSTI ID:6330995
In one embodiment of the described invention, the apparatus includes an enclosed chamber at atmospheric pressure or a pressure lower than anticipated formation pressures, and a normally-closed valve adapted to be positioned in a full-bore packer. With the packer set, opening of the valve will place the well annulus below the packer in communciation with the enclosed chamber and reduce the pressure in the annulus. In addition to collecting a sample of formation fluids in the chamber, where suitable pressure-measuring devices are associated with the apparatus, a so-called ''dry test'' can also be performed by the apparatus even though the tubing string is full. (6 claims)
- Assignee:
- Schlumberger Well Sur Corp.
- Patent Number(s):
- US 3373604
- OSTI ID:
- 6330995
- Country of Publication:
- United States
- Language:
- English
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