Tool for washing perforations in cased well bore

Details Tool for washing perforations in cased well bore Tool for washing perforations in cased well bore

1975-08-06

1977-06-07

Leppink, James A.

Wells

Processes

Cleaning or unloading well

166147, E21B 3700

Patent

active

040277321

ABSTRACT:
Disclosed is a tool for injecting into or washing perforations in a cased well bore. The tool includes an outer housing and an inner mandrel with a fluid passage therebetween. Perforations are cleaned by discharging fluid from the passage into a region between closely spaced cups for maintaining pressure. Also disclosed is a valve system whereby the washing of perforations can be performed either by pumping fluid down the casing or the tubing string. The washing fluid discharged between the cups enters the perforations and is circulated behind the casing until reentering the casing bore through other perforations either above or below the cups. The fluid is returned to the well surface through the tubing by entering either from the tool bottom or through ports in the housing which are in communication with the inner mandrel.

REFERENCES:
patent: 2073126 (1937-03-01), Sweet
patent: 2214121 (1940-09-01), Costello
patent: 2512801 (1950-06-01), Kinney et al.
patent: 3169580 (1965-02-01), Bateman
patent: 3396798 (1968-08-01), Burns et al.
patent: 3760878 (1973-09-01), Peevey

Affiliated with

Also associated with

Rating

Tool for washing perforations in cased well bore does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tool for washing perforations in cased well bore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool for washing perforations in cased well bore will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1231741