1
Joe C Hromas, Antoni K L Miszewski, Klaus B Huber: Automatic tubing release. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, March 15, 1994: US05293940 (65 worldwide citation)

An automatic tubing release mechanism is adapted to be disposed in a wellbore between a tubing, on one end, and a perforating gun, on the other end. The release mechanism includes a frangible breakup tube, firing head positioned above the breakup tube, and the perforating gun positioned below the br ...


2
Antoni K L Miszewski, Klaus B Huber: Shock energy absorber including collapsible energy absorbing element and break up of tensile connection. Schulumberger Technology Corporation, Henry N Garrana, John H Bouchard, July 21, 1992: US05131470 (36 worldwide citation)

A shock absorber is adapted to be disposed within a perforating gun string or within the tubing string above the perforating gun and includes an energy absorbing element adapted to absorb and store mechanical energy during detonation of the perforating gun and to permanently deform in response to th ...


3
Klaus B Huber, Antoni K L Miszewski: Explosive diode transfer system for a modular perforating apparatus. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, June 1, 1993: US05216197 (29 worldwide citation)

An explosive diode transfer system is interconnected between adjacent perforating guns of a modular perforating apparatus. The explosive diode transfer system includes a downwardly directed shaped charge, a booster, and a multi-density barrier interposed between the shaped charge and the booster. Th ...


4
A Glen Edwards, Klaus B Huber, Antoni K L Miszewski: Method and apparatus for controlling a well tool suspended by a cable in a wellbore by selective axial movements of the cable. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, March 9, 1993: US05191936 (24 worldwide citation)

In the representative embodiment of the method and apparatus of the invention which are disclosed herein, a well tool arranged for suspension in a well bore from a cable includes a mandrel that is telescopically arranged on the tool body and is operable after the tool is stationed in a well bore to ...


5
Antoni K L Miszewski, Klaus B Huber: Intra-perforating gun swivel. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, July 23, 1991: US05033553 (12 worldwide citation)

A perforating gun, adapted to be disposed in a deviated borehole, includes an intra-gun swivel located between a first plurality of charges and a second plurality of charges of the perforating gun. The swivel includes a first housing, a second housing, and thrust and radial bearings disposed between ...


6
Antoni K L Miszewski, Klaus B Huber, Joe C Hromas: Apparatus for releasing a pipe string from an object stuck downhole by continuously applying tension to said apparatus. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, October 27, 1992: US05158142 (9 worldwide citation)

A tension actuated device is adapted to be connected between a pipe string and an object stuck downhole in a wellbore and does not disconnect the pipe string from the object in response to a transient or temporary shock load that is temporarily applied to the pipe string. Rather, the tension actuate ...


7
A Glen Edwards, Klaus B Huber, Joe C Hromas, Antoni K L Miszewski, William M Hill: Wellbore apparatus including a rathole pressure balanced-differential pressure firing system. Schlumberger Technology Corporation, Henry Garrana, John H Bouchard, March 9, 1993: US05191933 (1 worldwide citation)

A well apparatus adapted to be disposed in a wellbore includes a perforating apparatus and a packer adapted to set and isolate an annulus above the packer from a rathole annulus below the packer, the perforating apparatus including a new and novel rathole differential pressure balanced firing system ...