Pump down assist wireline device and method
AssigneeDucon—Becker Service Technology, LLC
InventorBilly G. Becker
Life of this patent
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Abstract
An assist device for propelling a tool through a conduit, the assist device including an upstream housing having a first port; a downstream housing movably attached to the upstream housing and the downstream housing having a second port; and a swab element attached to the downstream housing. The first port is closed when there is no gap between the upstream housing and the downstream housing, and the first port is open when there is a gap between the upstream housing and the downstream housing.
Claims35
An assist device for propelling a tool through a conduit, the assist device comprising:
- an upstream housing having a first port;
- a downstream housing movably attached to the upstream housing and the downstream housing having a second port;
- a swab element attached to the downstream housing;
- and
- a stem having an upstream end located in a bore of the upstream housing and having a downstream end located in a bore of the downstream housing,
- wherein the first port is closed when there is no gap between the upstream housing and the downstream housing, and the first port is open when there is a gap between the upstream housing and the downstream housing.
A well system for deploying a well tool at a desired position in a well, the well system comprising:
- a wireline;
- an assist device attached to the wireline;
- and
- a well tool attached to the assist device,
- wherein the assist device has a swab element that seals a pipe in which the assist device is deployed, so that a fluid above the assist device pushes the swab element down the pipe, and
- wherein the assist device has a stem having an upstream end located in a bore of an upstream housing and having a downstream end located in a bore of a downstream housing.
The well system of 12, wherein the pipe is an inner pipe of a joint pipe element, and the joint pipe element has an outer pipe that is concentric to the inner pipe.
A method for deploying/retrieving a well tool in a well, the method comprising:
- lowering into a pipe located within the well, an assist device that has a swab element that contacts a bore of the pipe, an upstream housing and a downstream housing;
- pumping a fluid on top of the assist device;
- moving the assist device down the pipe without allowing the fluid to pass by the swab element;
- and
- pulling the assist device up the pipe while automatically opening a first port of the assist device to allow the fluid above the assist device to bypass the swab element through an internal conduit of the assist device,
- wherein a stem has an upstream end located in a bore of the upstream housing and has a downstream end located in a bore of the downstream housing.
Dependencies are inferred from the claim text.