GARY D. HERRING
Architects at Potter Crst Cir, Anchorage, AK

License number
Alaska AELM7488
Issued Date
Sep 14, 1987
Effective Date
Nov 13, 2015
Expiration Date
Dec 31, 2017
Category
Architects, Engineers and Land Surveyors
Address
Address
4723 Potter Crest Cir, Anchorage, AK 99516

Personal information

See more information about GARY D. HERRING at radaris.com
Name
Address
Phone
Gary Herring
8380 Summerset Dr, Anchorage, AK 99518
Gary Herring
8380 Summerset Dr, Anchorage, AK 99518

Professional information

See more information about GARY D. HERRING at trustoria.com
Gary Herring Photo 1
Squeeze Cement Method Using Coiled Tubing

Squeeze Cement Method Using Coiled Tubing

US Patent:
4627496, Dec 9, 1986
Filed:
Jul 29, 1985
Appl. No.:
6/760259
Inventors:
James D. Ashford - Anchorage AK
Terry W. Harrison - Anchorage AK
James K. Eastlack - Anchorage AK
Curtis G. Blount - Wasilla AK
Gary D. Herring - Anchorage AK
David R. Underdown - Plano TX
Assignee:
Atlantic Richfield Company - Los Angeles CA
International Classification:
E21B 3113
US Classification:
166292
Abstract:
A squeeze cementing method wherein the well tubing does not have to be pulled from the well so no workover rig is needed; a smaller volume of squeeze cement is required; the pressures involved in the squeeze operation can be precisely controlled with no risk of fracturing the formation; and there is no need for any drilling operations to remove hardened cement remaining in the well casing. More specifically, the present invention provides a squeeze cement operation that is carried out with a coiled tubing. The wellbore is isolated adjacent the perforations by flowing a packing fluid having a density greater than the cement through the coiled tubing to fill the lower part of the wellbore. An incompressible loading fluid is then flowed onto the packing liquid and this is followed by pumping the squeeze cement down the coiled tubing. After the cement is placed, a contaminating liquid is flowed down the coiled tubing to mix with the cement left in the casing and prevent it from setting.


Gary Herring Photo 2
Well Treatment Method Using Sodium Silicate To Seal Formation

Well Treatment Method Using Sodium Silicate To Seal Formation

US Patent:
4662448, May 5, 1987
Filed:
Apr 25, 1986
Appl. No.:
6/855660
Inventors:
James D. Ashford - Anchorage AK
James K. Eastlack - Anchorage AK
Gary D. Herring - Anchorage AK
William N. Wilson - Plano TX
Assignee:
Atlantic Richfield Company - Los Angeles CA
International Classification:
E21B 33138
US Classification:
166290
Abstract:
A squeeze silicate operation carried out through a coiled tubing for sealing upper perforations in a well casing to prevent flow of excess gas. A sodium silicate mixture is used which has a diverter material therein which rapidly builds a filter cake on the formation as the silicate is squeezed through the perforations. This filter cake forms a barrier which, in turn, prevents further flow of silicate into the formation. This effectively limits the depth of penetration of the silicate into the formation while still providing a good seal against flow through the squeezed perforations.