Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1985-02-11
1988-01-05
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
181105, 73152, 73154, G01V 140
Patent
active
047180471
ABSTRACT:
A method of determining the presence of channels in the cement behind a well casing utilizing the temperature profiles of the well. In a first embodiment rate coefficients indicative of the rate of temperature change along a zone of investigation are calculated from the geothermal gradient, flowing temperature profile and at least one shut-in temperature profile. These rate coefficients are plotted versus depth, with inconsistencies in the valves of the rate coefficients being indicative of the presence of channels. In a second embodiment rate coefficients are calculated over a well bonded zone of the well casing and utilized to predict shut-in temperatures along the zone of investigation. Differences in the predicted and actual shut-in temperatures is further indicative of the presence of channels.
REFERENCES:
patent: 2803526 (1957-08-01), Nowak
patent: 3480079 (1969-11-01), Guinn et al.
patent: 3795142 (1974-03-01), Smith et al.
Cooke, Jr. et al., "Application of Radial Differential Temperature (RDT) Logging to Detect and Treat Flow Behind Casing," SPWLA 20th Annual Logging Symposium, Jun. 3-6, 1979.
Cocanower et al., "Computerized Temperature Decay-an Asset to Temperature Logging," J. Pet. Tech. (Aug. 1969), pp. 933-941.
"An Introduction to Single Element Differential Temperature Logging," Gearhart-Owen Industries, Inc., brochure.
Barnette James C.
Carlson Norman R.
Lanuke Edward W.
Lobo Ian J.
McCollum Patrick H.
Tarcza Thomas H.
Western Atlas International Inc.
LandOfFree
Analysis of cement bonding utilizing temperature profiles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analysis of cement bonding utilizing temperature profiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of cement bonding utilizing temperature profiles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-12207