Union Oil Company of California

Stephen D Pye

Delbert E Pyle

William C Allen

William E Amend

Jose M Perez

John D Bush

Gerald M Hamblin

David Holligan

Paul W Fischer

Alice Anne Probst

Jerry C Jones, Deceased

Gregory R Andersen

Victor Walling, Jr

Soccer ball

One or more rigid sealing segments are attached to pipe end sections and the assembly lined to form a fluid-resistant joint. A segment surface forms the primary sealing interface of lined pipe sections without the need for a conventional removable liner edge seal. The lining process and configuration sealably bonds the liner to the fluid-resistant sealing segment and to the non-fluid-resistant pipe. The manner of bonding both avoids (or limits) liner stress and covers the non-fluid-resistant material of the pipe. In an alternative embodiment, the sealing segments are engaged at mating threaded surfaces, the mated threads providing a single primary sealing and engagement interface. Redundant liner end sealing may also be accomplished by a sandwiched deformable material if added reliability of sealing harsh fluids is desired. In another embodiment, portions of the rigid sealing segments are slidably mounted relative to each other and the primary seal interface is temperature actuated.

Brittle lined pipe connector

A method is provided whereby continuous injection of lift gas into a producing geothermal well, preferably from a liquid-dominated reservoir, increases production flow of geothermal fluids from the well by initiating a steam distillation effect within the wellbore. Apparatus is also provided for continuously injecting the lift gas during production from the well.

Gas lift process for restoring flow in depleted geothermal reservoirs

A composition and method for drilling a well into a subterranean formation containing a geothermal fluid utilizing a gas-containing aqueous drilling fluid containing both lignite and a salt of a high molecular weight acrylic polymer.

Composition and method for drilling formations containing geothermal

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Los Angeles, CA, United States of America

Stephen D Pye