The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 23, 2017

Filed:

Jul. 16, 2012
Applicants:

Randolph S. Coles, Spring, TX (US);

Dipesh P. Ashar, Houston, TX (US);

Inventors:

Randolph S. Coles, Spring, TX (US);

Dipesh P. Ashar, Houston, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/08 (2006.01); E21B 45/00 (2006.01); E21B 47/00 (2012.01); E21B 47/12 (2012.01);
U.S. Cl.
CPC ...
E21B 21/08 (2013.01); E21B 45/00 (2013.01); E21B 47/0006 (2013.01); E21B 47/122 (2013.01);
Abstract

A system for pump down operations in a wellbore includes a tool string disposed in a wellbore, the tool string including a cable head having an upper end coupled to an electric wireline cable, a downhole tool coupled to the cable head, the downhole tool selected from the group consisting of perforating tools and downhole logging tools. In this embodiment, the system further includes a downhole tension sensor located proximal to the upper end of the cable head, the sensor adapted to obtain downhole wireline tension data and transmit the downhole wireline tension data via the electric wireline cable, a fluid pump with a fluid output operatively connected to the wellbore above the tool string, and a controller adapted to selectively adjust a pump fluid output rate of the fluid pump during pump down operations based on the downhole wireline tension data received from the downhole tension sensor.


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