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.

Patent No.:

US 9429001 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 30, 2016

Filed:

Jun. 16, 2015
Applicant:

Flotek Hydralift, Inc., Houston, TX (US);

Inventor:

Larry D Best, Springtown, TX (US);

Assignee:

Flotek Hydralift, Inc., Houston, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 47/04 (2006.01); E21B 43/12 (2006.01); F04B 1/32 (2006.01); F04B 23/02 (2006.01); F04B 23/04 (2006.01); F04B 47/00 (2006.01); F04B 1/12 (2006.01); F04B 1/14 (2006.01); F04B 1/16 (2006.01); F04B 49/12 (2006.01);
U.S. Cl.
CPC ...
E21B 43/126 (2013.01); E21B 43/127 (2013.01); E21B 43/129 (2013.01); F04B 1/128 (2013.01); F04B 1/143 (2013.01); F04B 1/145 (2013.01); F04B 1/146 (2013.01); F04B 1/16 (2013.01); F04B 1/32 (2013.01); F04B 23/02 (2013.01); F04B 23/04 (2013.01); F04B 47/00 (2013.01); F04B 47/04 (2013.01); F04B 49/12 (2013.01);
Abstract

A dual well pumping unit () has two hydraulic ram units (), one for each well, which are connected together for regenerative assist. Synchronized variable stroke and variable speed pump down control is provided, such that should pump down be encountered in one of the wells, programmable controllers () reduce the speed and the stroke of a ram unit () for a pumped-down well by the same percentage, to maintain a constant cycle time between upstrokes and down strokes such that the ram unit () of the pumped down well will remain synchronized with a ram unit () of the other well. Preferably the speed and the stroke of the ram unit () of the pumped down well will be decreased by 1.5% per stroke when pump down is detected, and will be increased by 3% per stroke until a constant fluid level is reached.


Find Patent Forward Citations

Best, Larry. (2016). Synchronized pump down control for a dual well unit with regenerative assist (U.S. Patent No. 9429001). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9429001

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