William Gerry Lang
Engineers at Blenheim Dr, Spring, TX
License number
Colorado 6456
Issued Date
Jun 20, 1965
Renew Date
Dec 10, 1986
Expiration Date
Dec 10, 1986
Type
Professional Engineer
Address
Address
6919 Blenheim Dr, Spring, TX 77379
Personal information
See more information about William Gerry Lang at radaris.comName
Address
Phone
1910 N Main St, Del Rio, TX 78840
16406 Farnell Ct, Spring, TX 77379
40707 Lacey Wood Ct, Pinehurst, TX 77362
40707 Lacey Wood Ct, Magnolia, TX 77354
Professional information
See more information about William Gerry Lang at trustoria.com
Method And Apparatus For Activation Of Furnace Slag Base Cement
Method And Apparatus For Activation Of Furnace Slag Base Cement
US Patent:
5437329, Aug 1, 1995
Filed:
Jan 25, 1994
Appl. No.:
8/186438
Inventors:
Fred Brooks - Houston TX
Thomas W. Daves - The Woodlands TX
William Lang - Spring TX
Thomas W. Daves - The Woodlands TX
William Lang - Spring TX
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
E21B 3313, E21B 4700
US Classification:
166250
Abstract:
The invention provides for metering the pumping rate of BFS/mud mixtures pumped to the cementing head on a rig for sealing off the formation from the casing. Since BFS/mud mixtures require an activation agent, preferably sodium hydroxide is pumped into the flowline to the cementing head. Feedback from the BFS/mud slurry flowrate is fed to the activator injector pump drive system to regulate the addition rate of the activating agent in response to varying conditions, such as mud flowrate. The injection rate target can also be adjusted to compensate for any changes in downhole temperature. The risk of fouling surface equipment and the casing internal diameter is minimized because the activation agent is added very close in time to when the BFS/mud mixture enters the cementing head. Even in situations where the anticipated downhole temperature is significantly lower than the surface temperature, a sufficient amount of activating agent is added for the downhole conditions without fear of fouling the casing internal or the surface pumping equipment.