Conoco Inc.

Other

Robert M Siebert

Dennis R Wilson

Pat Lively

Richard Wayne Lahann

Hydrocarbon fluid recovery from wells extending into subterranean formations is stimulated by treatment of the near-wellbore formations with cryogenic liquid.

Cryogenic well stimulation method

Methane gas recovery from wells extending into subterranean coal seams is stimulated by treatment of near-wellbore coal seam with cryogenic liquid.

Cryogenic coal bed gas well stimulation method

A lighted gun sight is mounted on the slide of a semi-automatic pistol which reloads by having the slide move rearwardly for ejecting the used cartridge and inserting a new cartridge. The semi-automatic pistol has a grip attached to its lower portion with a trigger for firing the pistol and a grip safety which is attached to the rearward portion of the grip so that the gun cannot be fired without the grip being squeezed. The lighted gun sight essentially comprises a power source, a switch, and an intensity control apparatus mounted in the grip of the pistol. A bridge is then mounted on the slide from the gun sight to the grip. An electrical power coupling apparatus is provided between the grip and the bridge in a manner so that power can be coupled to the gun sight when the gun is ready for firing and may be decoupled when the pistol has been fired.

Lighted gun sight

A method and apparatus for determination of earth formation permeability in situ. A logging sonde supported in a borehole derives attenuation data from at least two ultrasonic energy transmission paths which have a common alignment but differing length, the attenuation data can then be used to determine an empirical X parameter that is directly related to formation permeability.

Method and apparatus to determine permeability of rock formations

A dye adsorption procedure for determining clay type and amount in subterranean formation. The procedure can be carried out at a well-site, providing rapid, accurate information for treatment of the well penetrating the formation.

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Ponca City, OK, United States of America

Robert M Siebert