Thomas M Ray

US Patent:

6601449, Aug 5, 2003

Filed:

May 6, 2002

Appl. No.:

10/140357

Inventors:

Derrick A. Jones - Hazlehurst MS 39083
Thomas R. Ray - Crystal Springs MS 39059

International Classification:

G01F 2314

US Classification:

73299, 73302, 73439

Abstract:

A self-regulating bubble tube assembly is used for determining the hydrostatic pressure exerted by fluids, such as drilling mud. The bubble tube assembly can be used to determine fluid level based upon said hydrostatic pressure and when bubble tubes are used in pairs can be used to determine a pressure differential that will indicate the density of the fluid. The bubble tube assembly comprises a flow of air directed through a diaphragm type pressure regulator. The pressure regulator output is connected to the bubble tube, which is partially submerged in the fluid, through a precision, in-line, flow limiting orifice. A feedback line from the bubble tube runs to one side of the diaphragm of the pressure regulator where the back pressure from the tube will regulate the output pressure from the regulator to maintain a pre-selected constant rate of air flow through the bubble tube. Hydrostatic pressure exerted by the liquid is measured from a line leading from the bubble tube to a pressure sensitive meter or the like.

US Patent:

20090152009, Jun 18, 2009

Filed:

Dec 18, 2007

Appl. No.:

12/002710

Inventors:

Jeremy Buc Slay - Fort Worth TX, US
Thomas Wayne Ray - Tyler TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC., A DELAWARE CORPORATION - Houston TX

International Classification:

E21B 4/02
F01C 1/107
F04C 18/107
F04C 15/00
F04C 2/107

US Classification:

175107, 418 613, 418178

Abstract:

A nano particle reinforced polymer element of a stator and rotor assembly for a power section of a positive displacement fluid motor or a progressive cavity pump. Nano-sized particles are blended with an uncured polymer to improve the physical and chemical properties of the polymer. The use of nano-sized particles reduces the quantity of reinforcement material required to manufacture the polymer for the stator and rotor assembly and lowers the viscosity of the uncured polymer to improve manufacturing characteristics. The use of chemically functionalized nano particles improves the chemical and physical characteristics of the polymer.