Formation flush pump system for use in a wireline formation test tool
A formation test device to be lowered in a well borehole is described which comprises: (a) a tool body adapted to be supported in a well borehole adjacent to a formation of interest on a logging cable; (b) an extendible snorkel having a fluid inlet for extension from said tool body to obtain a fluid sample from the formation of interest; (c) a second and separate extendible snorkel having a fluid outlet for extension from said tool body to return a fluid sample to the formation of interest; (d) pump means in said tool body operatively connected to said fluid inlet and also to said fluid outlet for pumping formation fluid from said fluid inlet through said tool body and to said fluid outlet; (e) wherein said fluid outlet is larger in area than said inlet; (f) valve means serially connected in the flow path from said fluid inlet to said fluid outlet to provide isolation of said fluid inlet and also of said fluid outlet; (g) separate fluid inlet and fluid outlet testing means connected respectively to said fluid inlet and to said fluid outlet for making measurements of fluids at said fluid inlet and said fluid outlet respectively; and (h) storage chamber means in said tool body for receiving a sample connected through a controllable valve means enabling a selected portion of fluid flowing between said fluid inlet and said fluid outlet to be isolated and directed to said chamber means on operation of said valve means and wherein said controllable valve means additionally operates so that fluid flow can also be directed from said fluid inlet to said fluid outlet without storage of a sample.
- Assignee:
- Halliburton Logging Services, Inc., Houston, TX (United States)
- Patent Number(s):
- US 5230244; A
- Application Number:
- PPN: US 7-545231
- OSTI ID:
- 6195516
- Resource Relation:
- Patent File Date: 28 Jun 1990
- Country of Publication:
- United States
- Language:
- English
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