Encapsulant providing structural support for explosives
AssigneeSchlumberger Technology Corporation
InventorsWenbo Yang, Brenden M. Grove, Lawrence A. Behrmann, Alfredo Fayard, Daniel C. Markel
Life of this patent
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Abstract
An apparatus and method is provided to provide structural support for explosives (e.g., shaped charges) in a tool (e.g., a perforating gun). An encapsulant surrounds at least portions of the explosives to provide structural support for the explosives. The encapsulant contains a porous material, such as porous cement or polymer.
Claims33
A perforating gun comprising:
- one or more shaped charges;
- and
- an encapsulant surrounding the one or more shaped charges to provide structural support for the shaped charges,
- wherein the encapsulant comprises cement.
A perforating gun comprising:
- a plurality of shaped charges;
- and
- an encapsulant surrounding the plurality of shaped charges to provide structural support for the shaped charges,
- wherein the encapsulant comprises a porous solid,
- wherein the porous solid contains a phase change material.
A perforating gun comprising:
- one or more shaped charges;
- and
- an encapsulant surrounding the one or more shaped charges to provide structural support for the shaped charges,
- wherein the encapsulant comprises a mixture of cement and hollow filler material.
A perforating gun comprising:
- a plurality of shaped charges;
- and
- an encapsulant surrounding the plurality of shaped charges to provide structural support for the shaped charges, a support mechanism for the plurality of shaped charges, the support mechanism being surrounded at least in part by the encapsulant,
- wherein the support mechanism comprises a strip.
A perforating gun comprising:
- a plurality of shaped charges;
- and
- an encapsulant surrounding the plurality of shaped charges to provide structural support for the shaped charges, a support mechanism for the plurality of shaped charges, the support mechanism being surrounded at least in part by the encapsulant,
- wherein the support mechanism comprises a twisted bracket having one or more support rings to receive the one or more shaped charges.
A perforating gun comprising:
- one or more shaped charges;
- and
- an encapsulant surrounding the one or more shaped charges to provide structural support for the shaped charges;
- and
- a support layer around at least a part of the encapsulant,
- wherein the support layer is coated onto the outer surface of the encapsulant.
An apparatus for use in a wellbore, comprising:
- explosives;
- and
- an encapsulant surrounding at least portions of the explosives to provide structural support for the explosives,
- the encapsulant comprising a material selected from the group consisting of a porous cement;
- a mixture containing cement and hollow structures;
- a mixture containing cement and microspheres;
- a mixture containing epoxy and hollow structures;
- and a mixture containing a hollow filler material, a heavy filler powder, and a binder/matrix.
A method of providing structural support for explosives in a downhole tool, comprising:
- arranging the explosives in a predetermined arrangement;
- mounting the explosives on a support structure;
- and
- encapsulating at least portions of the explosives and at least a portion of the support structure in a compound to support the explosives in the predetermined arrangement.
Dependencies are inferred from the claim text.