Wellbore tubular cutter
AssigneeOwen Oil Tools LP
InventorsJeffrey D. Wood, Timothy Edward LaGrange, Matthew Clay
Life of this patent
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Abstract
An apparatus and a method for cutting a wellbore tubular are described herein. The apparatus and the method may include an upper section and a lower section mating at a juncture plane defined by a plane transverse to the longitudinal axis of the wellbore tubular. Each section may include a support plate having a passage, a liner positioned adjacent to the support plate, and an energetic material disposed between the support plate and the liner. An initiator having a shaft may be positioned in the passages of the upper section and the lower section.
Claims19
An apparatus for cutting a wellbore tubular, comprising:
- an upper section and a lower section mating at a juncture plane defined by a plane transverse to a longitudinal axis of the wellbore tubular, each section including:
- a support plate having a passage,
- a ring-shaped liner positioned adjacent to the support plate, and
- an energetic material disposed between the support plate and the liner;
- a housing configured to receive the upper section and the lower section, and wherein a gap separates the liners from an interior surface of the housing, the gap allowing fluid communication between a space between the lower section and the housing and a jet forming region;
- an initiator having a shaft traversing the upper section and the lower section, wherein the initiator includes at least one radial bore that is orthogonal to the longitudinal axis and is bisected by the juncture plane;
- and
- a fastener engaging the shaft to compressively secure the upper section with the lower section, the fastener further having a pedestal portion that separates the lower section from the housing.
An apparatus for cutting a wellbore tubular, comprising:
- an upper section and a lower section mating at a juncture plane defined by a plane transverse to the longitudinal axis of the wellbore tubular, each section including:
- a support plate having a passage;
- a liner positioned adjacent to the support plate;
- and
- an energetic material disposed between the support plate and the liner;
- and
- an initiator having a shaft positioned in the passages of the upper section and the lower section.
A method of severing a subterranean wellbore tubular, comprising:
- severing the wellbore tubular using a tool having:
- an upper section and a lower section mating at a juncture plane defined by a plane transverse to the longitudinal axis of the wellbore tubular, each section including:
- a support plate having a passage;
- a liner positioned adjacent to the support plate;
- and
- an energetic material disposed between the support plate and the liner;
- an initiator having a shaft positioned in the passages of the upper section and the lower section.
Dependencies are inferred from the claim text.