| US 7,472,589 B2 | ||
| Single phase fluid sampling apparatus and method for use of same | ||
| Cyrus A. Irani, Houston, Tex. (US); Vincent P. Zeller, Flower Mound, Tex. (US); Chuck MacPhail, Little Elm, Tex. (US); and Don H. Perkins, Allen, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Houston, Tex. (US) | ||
| Filed on Feb. 06, 2007, as Appl. No. 11/702,810. | ||
| Application 11/702810 is a continuation in part of application No. 11/438764, filed on May 23, 2006. | ||
| Application 11/438764 is a continuation in part of application No. 11/268311, filed on Nov. 07, 2005, granted, now 7,197,923. | ||
| Prior Publication US 2007/0193377 A1, Aug. 23, 2007 | ||
| Int. Cl. E21B 49/00 (2006.01) | ||
| U.S. Cl. 73—152.23 | 34 Claims |
| 1. A method f or obtaining a fluid sample in a subterranean well, the method comprising:
disposing a sampling chamber within the subterranean well;
actuating the sampling chamber such that a sample chamber within the sampling chamber is in fluid communication with the exterior
of the sampling chamber;
receiving a first portion of the fluid sample in a debris chamber of a debris trap piston slidably disposed within the sampling
chamber;
retaining the first portion of the fluid sample in the debris chamber using a check valve disposed in an inlet portion of
the debris trap piston;
displacing the debris trap piston within the sampling chamber to expand the sample chamber; and
receiving the remainder of the fluid sample in the sample chamber.
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