Halliburton Energy Services, Inc.

Otis Engineering Corporation

Dannie R Collins

James Marshall Barker

Imre I Gazda

John A Regalbuto

David John Leidel

Apparatus and associated methods of using the apparatus are disclosed for performing cuts in a subterranean well. The apparatus utilizes linear shaped charges arranged in an endless pattern which are used to cut a pattern in a downhole structure. The charges are discharged to perform the cutting operation.

Method and apparatus for performing cutting operations in a subterranean well

A plugging device for installation as by wireline tools in a receptacle in a wall flow conductor for plugging the flow conductor against flow from below as well as from above, the plugging device including a tubular housing having seals for sealing with the receptacle, lock members for anchoring it therein, a mandrel reciprocable in the housing between lower and upper positions for moving the lock members to locking position and for allowing them to move to unlocking position, a plug member closing the housing and being movable relative thereto between lower and upper positions, and a locking mechanism for locking the plug member to the mandrel whenever the mandrel is in its lower position and the plug member is moved to its upper position to prevent the mandrel from being moved to its unlocking position. A running tool is provided for installing the plugging device which will not release the device unless it is properly installed in the receptacle.

Growing community of inventors

The Colony, TX, United States of America

Dannie R Collins