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US 2019/0153807 A1Published application
Stress distribution tuning in composite plugs and method
AssigneeGeodynamics, Inc.
InventorJoel L. BARLOW
Life of this patent
Estimating the term…
Abstract
A composite plug for sealing a well, the composite plug including a mandrel having an internal bore that extends along a longitudinal axis (X) of the mandrel; and plural elements located on the mandrel. At least one element of the plural elements is attached to the mandrel with a tunable thread, and the mandrel and the tunable thread are made of composite materials.
Claims25
A composite plug for sealing a well, the composite plug comprising:
- a mandrel having an internal bore that extends along a longitudinal axis (X) of the mandrel;
- and
- plural elements located on the mandrel,
- wherein at least one element of the plural elements is attached to the mandrel with a tunable thread,
- wherein the mandrel and the tunable thread are made of composite materials.
2 more elements
A method for using a composite plug in a well for sealing the well, the method comprising:
- lowering the composite plug into the well, wherein the composite plug includes a mule shoe attached to a mandrel with only a tunable thread;
- sending a signal to a setting tool to deploy the composite plug;
- and
- pulling out of the well the setting tool by applying a tensile load to the setting tool so that a connection between the setting tool and the plug is broken while the tunable thread holds the mule shoe attached to the mandrel.
1 more element
A method for manufacturing a composite plug for sealing a well, the method comprising:
- providing a loading direction of a mule shoe of the composite plug, wherein the mule shoe is attached with only a tunable thread to a mandrel of the plug;
- providing a maximum value of a force that the mule shoe needs to withstand while in the well;
- providing a value for an angle between (1) a steep face of a tooth of the tunable buttress thread and (2) a longitudinal axis of the mandrel;
- selecting a method for making the mule shoe from a composite material;
- and
- making the mule shoe to have the tunable thread with the given angle.
3 more elements
Dependencies are inferred from the claim text.