Junk basket and method of removing foreign material from a well
AssigneeInternational Enterprises, Inc.
InventorTom R. Greer
Life of this patent
Estimating the term…
Abstract
An improved junk basket comprises a tool body having a longitudinally extending passageway therethrough and a magnet assembly disposed in the passageway. A retainer is cooperative between the magnet assembly and the tool body to retain the magnet assembly in a lower position in the passageway and selectively releasable to permit longitudinal movement of the magnet assembly to an upper position in the passageway whereby core cutting apparatus and/or an improved reverse circulation system, also included in the tool, may be employed.
Claims27
A junk basket comprising:
- a tool body having a longitudinally extending passageway therethrough;
- a magnet assembly disposed in said passageway;
- retainer means cooperative between said magnet assembly and said tool body to retain said magnet assembly in a lower position in said passageway and selectively releasable to permit longitudinal movement of said magnet assembly to an upper position in said passageway;
- and
- a magnet catcher assembly carried by said tool body and engageable with said magnet assembly in said upper position to prevent downward movement of said magnet assembly from said upper position.
A junk basket comprising:
- a tool body having a longitudinally extending passageway therethrough and a system of flowways therein for providing reverse circulation of fluid through said tool body;
- a magnet assembly disposed in said passageway;
- retainer means cooperative between said magnet assembly and said tool body to retain said magnet assembly in a lower position in said passageway and selectively releasable to permit longitudinal movement of said magnet assembly to an upper position in said passageway.
A junk basket comprising:
- a tool body having a longitudinally extending passageway therethrough;
- a magnet assembly disposed in said passageway;
- a junk catcher assembly carried by said tool body in the lower portion of said passageway and comprising a plurality of junk catcher elements resiliently biased downwardly and radially into said passageway and retractable upwardly and radially out of said passageway;
- and retainer means cooperative between said magnet assembly and said tool body to retain said magnet assembly in a lower position in said passageway and selectively releasable to permit longitudinal movement of said magnet assembly to an upper position in said passageway.
A method of removing foreign material from a well including the steps of:
- a. lowering a tubular tool body having a magnet assembly therein into said well to the site of said foreign material;
- b. retaining said magnet assembly in a lower position adjacent the lower end of said tool body to attract at least a portion of said foreign material;
- c. releasing said magnet assembly for longitudinal movement within said tool body;
- d. moving said magnet assembly upwardly within said tool body to an upper position while moving said foreign material into said tool body beneath said magnet assembly by circulating fluid downwardly along the exterior of said tool body and upwardly within said tool body adjacent the lower end of said tool body;
- e. removing said tool body from said well while retaining said foreign material within said tool body.
A junk basket comprising:
- a tool body having a longitudinally extending passageway therethrough;
- a magnet assembly disposed in said passageway;
- a junk catcher assembly carried by said tool body in the lower portion of said passageway;
- and retainer means cooperative between said magnet assembly and said tool body to retain said magnet assembly in a lower position in said passageway and selectively releasable to permit longitudinal movement of said magnet assembly to an upper position in said passageway, said retainer means including releasable means interconnecting said junk catcher assembly and said magnet assembly.
Dependencies are inferred from the claim text.