skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Hydraulic jet well cleaning assembly using a non-rotating tubing string

Abstract

A method and system for cleaning well liners employing a non-rotating tubing string attached to a hydraulic jet carrier assembly is disclosed. The assembly has a plurality of jet nozzles spaced along its length, each of said nozzles expelling a stream of fluid under pressure against the liner with a force which has an equal and opposite reactive force. At least some of the nozzles are oriented along the carrier such that the reactive force for each jet is directionally offset with respect to the central axis of the carrier, thereby creating a twisting moment tending to rotate the carrier about its central axis. During the cleaning operation, the bottom hole differential pressure of the fluid supplied to the jet carrier is varied to rotationally displace the carrie as it is moved vertically within the well bore. Moreover, in a preferred embodiment, the angle of rotational displacement can be calculated which will produce at least double coverage of the jet streams against the liner.

Inventors:
Publication Date:
OSTI Identifier:
6159174
Patent Number(s):
US 4518041
Assignee:
EDB-86-014493
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 22 Mar 1982; Other Information: PAT-APPL-360492
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; 15 GEOTHERMAL ENERGY; HYDRAULIC EQUIPMENT; WELLS; CLEANING; LINERS; COMPRESSIBLE FLOW; DRILL PIPES; FIELD PRODUCTION EQUIPMENT; JETS; NOZZLES; TUBES; WELL SERVICING; DRILLING EQUIPMENT; EQUIPMENT; FLUID FLOW; PIPES; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing; 150901 - Geothermal Engineering- Drilling Technology & Well Hardware

Citation Formats

Zublin, C W. Hydraulic jet well cleaning assembly using a non-rotating tubing string. United States: N. p., 1985. Web.
Zublin, C W. Hydraulic jet well cleaning assembly using a non-rotating tubing string. United States.
Zublin, C W. 1985. "Hydraulic jet well cleaning assembly using a non-rotating tubing string". United States.
@article{osti_6159174,
title = {Hydraulic jet well cleaning assembly using a non-rotating tubing string},
author = {Zublin, C W},
abstractNote = {A method and system for cleaning well liners employing a non-rotating tubing string attached to a hydraulic jet carrier assembly is disclosed. The assembly has a plurality of jet nozzles spaced along its length, each of said nozzles expelling a stream of fluid under pressure against the liner with a force which has an equal and opposite reactive force. At least some of the nozzles are oriented along the carrier such that the reactive force for each jet is directionally offset with respect to the central axis of the carrier, thereby creating a twisting moment tending to rotate the carrier about its central axis. During the cleaning operation, the bottom hole differential pressure of the fluid supplied to the jet carrier is varied to rotationally displace the carrie as it is moved vertically within the well bore. Moreover, in a preferred embodiment, the angle of rotational displacement can be calculated which will produce at least double coverage of the jet streams against the liner.},
doi = {},
url = {https://www.osti.gov/biblio/6159174}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {5}
}