US 6,640,904 B2 · Sand removal and device retrieval tool

Abstract

A simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.

Claims11

Dependent claims

A combination debris removal and down-hole tool retrieval apparatus comprising:

a venturi portion including a nozzle and a throat;
a container portion disposed therebelow for containing debris, the debris urged into the container by a suction created by the venturi thereabove;
and
a down-hole tool engagement and retrieval portion disposed therebelow, the down-hole tool engagement and retrieval portion operable by a suction created by the venturi portion thereabove.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/163,814Filed 6 Jun 2002 · division

Priority

27 Mar 2000

Published

US 2002/0174987 A128 Nov 2002

Granted

4 Nov 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

E21B 23/04
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells: operated by fluid means, e.g.…
E21B 23/0418
Operated by fluid means, e.g. actuated by explosion: specially adapted for locking the tools in landing nipples or recesses
E21B 23/042
Operated by fluid means, e.g. actuated by explosion: using a single piston or multiple mechanically interconnected pistons
E21B 27/00
Containers for collecting or depositing substances in boreholes or wells

Sand removal and device retrieval tool

Life of this patent

Sand removal and device retrieval tool

Life of this patent

Abstract

Claims11