Qinetiq Limited

The Secretary of State for Defence in Her Britannic Majesty's Government

Michael John Hinton

Philip Duncan Church

Richard Gordon Townsley

Peter John Gould

Russell Vaughan Meddes

John Cook

Robert O Clark

Noel J Parratt

Nicholas Savage

Russell Meddes

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.

Shaped charge and method of modifying a shaped charge

A carrier for at least one shaped charge, the carrier being disposable in use within an oil, gas, water or steam well bore. The carrier comprises a housing at least partially formed from a composite material which is non-frangible in normal use. The composite material component of the housing is arranged substantially to contain debris created within the carrier as a result of firing of the at least one shaped charge. The housing may be entirely of composite material or may comprise in inner metallic housing and an outer overwrap of composite material.

Perforators

A composite material case () and liner () is described for use in a perforator () for completing wells such as oil, gas and water wells (). The materials selected are intended to exhibit stability during prolonged periods at the raised temperatures and pressures present in a well ().

A sabothaving a rearward end and a central longitudinal channelwhich is engageable with projectilehas an anisotropic compressive strength distribution such that on individual radial planes the compressive strength in a first principal material direction Pradiates from the central channeltowards the rearward end of the sabot. This permits a more even distribution of force at the interface between the sabot and the penetrator. The sabot may be constructed from a fibre reinforced plastic composite, containing a single or a double array of fibres.

Sabot

Recoilless projectile launcher

Growing community of inventors

West Malling, United Kingdom

Michael John Hinton