Shaped charge and method of modifying a shaped charge
AssigneeQinetiq Limited
InventorsMichael John HINTON, Philip Duncan CHURCH, Richard Gordon TOWNSLEY, Peter John GOULD
Life of this patent
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Abstract
Some embodiments are directed to a shaped charge liner including an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner being rotationally symmetric about the main liner axis wherein the liner has discrete rotational symmetry about the main liner axis.
Claims38
A shaped charge liner comprising an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner being rotationally symmetric about the main liner axis wherein the liner has discrete rotational symmetry about the main liner axis.
A shaped charge liner comprising an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner defining a prismatoid cavity.
A method of optimizing a shaped charge liner design for use in an oil/gas well perforator in order to form a desired hole shape in a rock formation, the method comprising:
- comparing the desired hole shape to a library of known liner designs, the library comprising data relating to the hole shape formed by each liner design within the library;
- selecting the liner design that produces the closest hole shape to the desired hole shape;
- varying at least one parameter of the selected liner design to form a modified liner design;
- modelling the hole shape that the modified liner design produces;
- repeating the varying and modelling steps until the hole shape of the modified liner design converges towards the desired hole shape.
A method of generating a library of shaped charge liners detailing the performance of such liners in different environmental conditions, the method comprising:
- receiving desired hole target parameters;
- receiving data relating to the environmental conditions that the shaped charge liner is to be operated under;
- modelling bespoke shaped charge liner;
- determining the hole parameters that such a bespoke liner creates in relation to the environmental conditions and adding data relating to the shaped charge liner and its performance to a library.
Dependencies are inferred from the claim text.