Down hole shock absorber
Abstract
This patent describes a well pump system. It comprises: a sucker rod string; a pump reciprocable in response to the string; a cylinder; a piston disposed for vertical reciprocal motion within the cylinder; means for biasing the cylinder and the piston against compressive motion; means for pneumatically relieving pressure in the cylinder during compressive motion; and means for preventing relative rotational motion and for limiting relative expansive motion between the cylinder and the piston; the cylinder and the piston being coaxially mounted in the sucker rod string proximate and above the pump to buffer forces transmitted through the string.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 5434389
- Patent Number(s):
- US 4997037; A
- Application Number:
- PPN: US 7-385814
- Assignee:
- NOV; NOV-91-018055; EDB-91-121737
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 26 Jul 1989
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; 03 NATURAL GAS; ROD PUMPS; SHOCK ABSORBERS; DESIGN; NATURAL GAS WELLS; OIL WELLS; PUMPS; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing
Citation Formats
Coston, H A. Down hole shock absorber. United States: N. p., 1990.
Web.
Coston, H A. Down hole shock absorber. United States.
Coston, H A. 1990.
"Down hole shock absorber". United States.
@article{osti_5434389,
title = {Down hole shock absorber},
author = {Coston, H A},
abstractNote = {This patent describes a well pump system. It comprises: a sucker rod string; a pump reciprocable in response to the string; a cylinder; a piston disposed for vertical reciprocal motion within the cylinder; means for biasing the cylinder and the piston against compressive motion; means for pneumatically relieving pressure in the cylinder during compressive motion; and means for preventing relative rotational motion and for limiting relative expansive motion between the cylinder and the piston; the cylinder and the piston being coaxially mounted in the sucker rod string proximate and above the pump to buffer forces transmitted through the string.},
doi = {},
url = {https://www.osti.gov/biblio/5434389},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 05 00:00:00 EST 1990},
month = {Mon Mar 05 00:00:00 EST 1990}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.