Invention Grant
- Patent Title: System and method for controlled pumping in a downhole sampling tool
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Application No.: US14301963Application Date: 2014-06-11
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Publication No.: US09845673B2Publication Date: 2017-12-19
- Inventor: Adriaan Gisolf , Nathan Landsiedel , Cosan Ayan , Kenneth Moelhoff
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee Address: US TX Sugar Land
- Agent Michael Dae
- Main IPC: E21B49/00
- IPC: E21B49/00 ; E21B49/08

Abstract:
A downhole tool designed to be disposed in a borehole of a subterranean formation is provided. The downhole tool includes a probe used to interface with the subterranean formation in order to sample fluid from or to inject fluid into the subterranean formation. The downhole tool also includes a sample flowline fluidly coupled to the probe and used to direct fluid through the downhole tool. The downhole tool further includes at least two volume chambers. These volume chambers each include a first side fluidly coupled to the sample flowline, a second side fluidly coupled to the guard flowline, and a piston separating the first side from the second side. The downhole tool is able to control a flow of fluid from a high pressure environment to a low pressure environment via the at least two volume chambers, the sample flowline, and the guard flowline.
Public/Granted literature
- US20150361791A1 System And Method For Controlled Pumping In A Downhole Sampling Tool Public/Granted day:2015-12-17
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