Timothy C Allison

US Patent:

8240330, Aug 14, 2012

Filed:

Aug 19, 2009

Appl. No.:

12/544045

Inventors:

James J. Moore - San Antonio TX, US
Timothy C. Allison - San Antonio TX, US
Andrew H. Lerche - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

F16K 17/02

US Classification:

13751619, 13751625, 137514, 137512

Abstract:

A compressor plate valve having a valve seat, a valve guard and a valve plate. The valve plate is moveable between the valve guard and valve seat to control fluid passage through passages in the seat, the guard, and the plate. A valve stem passes through the center of the valve guard and is attached to the center of the valve plate. The valve stem provides guidance for the plate valve to ensure parallel motion. In addition to sealing surfaces that oppose passages, the seat and plate have landing surfaces that provide a braking effect when the valve closes through squeeze film action.

US Patent:

20210040824, Feb 11, 2021

Filed:

Mar 31, 2020

Appl. No.:

16/836492

Inventors:

- The Woodlands TX, US
Timothy C. Allison - San Antonio TX, US
Jerry Brady - Anchorage AK, US
Paulo Tubel - The Woodlands TX, US

Assignee:

Tubel LLC - The Woodlands TX

International Classification:

E21B 43/12
E21B 43/38

Abstract:

A high-speed downhole motor-driven artificial-lift gas compressor assembly comprising an aerodynamic, gas-bearing supported, multi-stage centrifugal compressor is deployed downhole to work with other components such as electric submersible pumps and separators disposed in a multizone reservoir. Water may be injected into an injection water zone and hydrocarbons allowed to escape from a hydrocarbon producing zone to the surface. Compressed gas may be introduced into an annulus between a casing and tubing and directed into an injection gas zone. In addition, gas being produced in the hydrocarbon producing zone may flow back through the annulus between the casing and tubing or through one or more water separators and/or gas separators into the high-speed downhole motor-driven artificial-lift gas compressor assembly and, once compressed, exit the high-speed downhole motor-driven artificial-lift gas compressor assembly and routed back to the injection gas zone. Thus, water and gas may be separated from the fluid flows and injected back downhole or, alternatively, water may be separated from the fluid flows and hydrocarbons such as oil and/or gas allowed to flow to the surface.

US Patent:

20200325884, Oct 15, 2020

Filed:

Mar 29, 2020

Appl. No.:

16/833608

Inventors:

- San Antonio CA, US
Timothy Charles Allison - San Antonio TX, US

International Classification:

F04B 39/00
F04B 39/06
F04B 45/053

Abstract:

A compressor system for receiving a gas fluid and discharging the gas fluid at a higher pressure. The system comprises at least one compressor and at least one piston intensifier associated with each compressor. Each piston intensifier has a double-acting piston, with one piston head reciprocating in an actuation cavity and the other piston head reciprocating in a high pressure cavity. The compressor delivers its output flow to both cavities of the piston intensifier, alternating between below and above their piston heads, to provide both a working (actuation) fluid and a fluid to be compressed and discharged. A return flow from the actuation cavity back to the compressor also alternates to recycle the working fluid.