Michael D. Erwin
Engineering at Kristie Cir, Anchorage, AK
License number
Louisiana EI.0005540
Issued Date
Nov 30, 1977
Expiration Date
Dec 31, 1984
Category
Civil Engineer
Address
Address
11906 Kristie Cir, Anchorage, AK 99516
Professional information
System And Method For Measuring Fluid Properties By Forming A Coaxial Transmission Line In A Cased Well
US Patent:
5926024, Jul 20, 1999
Filed:
Jan 4, 1995
Appl. No.:
8/368610
Inventors:
Curtis G. Blount - Wasilla AK
James K. Eastlack - Plano TX
Michael D. Erwin - Anchorage AK
James K. Eastlack - Plano TX
Michael D. Erwin - Anchorage AK
Assignee:
Atlantic Richfield Company - Los Angeles CA
International Classification:
G01V 318
US Classification:
324324
Abstract:
Apparatus for insertion in a well which is producing fluids from multiple zones for measuring the concentration of water in the fluids flowing through the well to determine which zone may be producing excessive quantities of water. The apparatus transmits microwave frequency range radiation within a section of the wellbore. The apparatus may utilize a portion of the well casing and a conductor member which is centered in the wellbore by spaced apart centralizers to form a coaxial transmission line within the wellbore. The apparatus may be traversed through the wellbore on a wireline type cable for continuous measurement of the water content of the water-oil mixture flowing through the well to determine which zone is producing excessive amounts of water into the production fluids. A change in operating frequency of an oscillator furnishing the microwave range energy is compared with power loss through the apparatus to determine if a water-in-oil or oil-in-water emulsion is present in the wellbore fluid flow stream. Alternate embodiments of the apparatus include downhole transmitting and receiving antennas for directing an RF energy beam through the wellbore fluids.
Water Block Removal With Surfactant Based Hydrocarbonaceous Liquid System
US Patent:
6911417, Jun 28, 2005
Filed:
Apr 29, 2003
Appl. No.:
10/425013
Inventors:
Albert F. Chan - Plano TX, US
Michael D. Erwin - Anchorage AK, US
Michael D. Erwin - Anchorage AK, US
Assignee:
ConocoPhillips Company - Houston TX
International Classification:
C09K003/00, E21B021/00
US Classification:
507211, 507261, 507266, 507927, 510421, 510422, 166311, 166312
Abstract:
A composition, formulation, and method for removing water from a near-wellbore portion of a subterranean formation containing a crude oil and penetrated by a wellbore. The formulation contains alkylpolyglycoside, ethoxylated alcohol and linear alkyl alcohols. The composition contains a hydrocarbonaceous liquid, alkylpolyglycoside, ethoxylated alcohol and linear alkyl alcohol.