Measuring and testing – Borehole or drilling – Downhole test
Patent
1988-04-29
1989-05-30
Levy, Stewart J.
Measuring and testing
Borehole or drilling
Downhole test
175 50, E21B 4706
Patent
active
048339148
ABSTRACT:
Formation strength and other measurement while drilling parameters are combined in a formation volumetric analysis which produces not only the traditional volumetric components of clay volume, mineral volume, total porosity, and water filled porosity, but also, in shaley formations, an excess or overpressure porosity. The overpressure porosity is then utilized to generate an indication of pore pressure which in turn is used in the drilling process as an aid in determining the lowest optimal drilling mud weight for most efficient drilling without incurring excessive risks of a blowout arising from an overpressured formation.
REFERENCES:
patent: 3517553 (1970-06-01), Williams et al.
patent: 3620077 (1971-11-01), Brown et al.
patent: 3785446 (1974-01-01), Fertl et al.
patent: 4064749 (1977-12-01), Pittman et al.
patent: 4187908 (1980-02-01), Fertl et al.
patent: 4338664 (1982-07-01), Mayer
patent: 4627276 (1986-12-01), Burgess et al.
patent: 4685329 (1987-08-01), Burgess
"A Petrophysical-Mechanical Math Model for Rea-Time Wellsite Pore Pressure/Fracture Gradient Prediction" by P. W. Holbrook & M. L. Hauck, SPE16666, Sep. 27-30, 1987.
"A Real-Time Normalized Rate of Penetration Aids in Lithology and Pore Pressure Prediction" by C. E. Provost Jr. SPE/LADC, Mar. 15-18, 1987.
"Pore Pressure and Porosity from MWD Measurements" by W. G. Lesso Jr & T. M. Burgess, IADC/SPE, Feb. 10-12, 1986.
"Effects of Selected Mud Properties on Rate of Penetration in Full-Scale Shale Drilling Simulations" by C. A. Cheatham & J. J. Nahm & N. D. Heitkamp, SPE/IADC, Mar. 6-8, 1985.
"Pore Pressure Detection from the MWD Gamma Ray", by W. A. Zoeller, SPE 12166, Oct. 5-8, 1983.
"Applications of Measurements While Drilling" by D. R. Tanguy and W. A. Zoeller, SPE 10324, Oct. 5-7, 1981.
"Sigmalog Tells Pressure, Porosity While Drilling" by R. E. Gerard, Oil & Gas Journal, Aug. 1, 1977.
"Determine Pore Pressures from MWD Gamma Ray Logs" by W. A. Zoeller, World Oil, Mar. 1984.
"The Equation for Geopressure Prediction from Well Logs" by Ben A. Eaton, SPE 5544, Sep. 28-Oct. 1, 1975.
"Application of Drilling Performance Data to Overpressure Detection" by J. R. Jorden, O. J. Shirley, Journal of Petroleum Technology, Nov. 1966.
"A Method of Estimating Formation Pressures from Gulf Coast Well Logs" by Harold H. Ham, Trans. G. C. Asso. of Geological Soc., vol. XVI, 1966.
"Estimation of Formation Pressures from Log-Derived Shale Properties" by C. E. Hottman, R. K. Johnson, Journal of Petroleum Technology, Jun,. 1965.
"MWD Interpretration Tracks Bit Wear" by I. G. Falconer, T. M. Burgess and E. Wolfenberger, Oil & Gas Journal, Feb. 10, 1986.
Anadrill, Inc.
Borst Stephen L.
Levy Stewart J.
O'Shea Kevin D.
LandOfFree
Pore pressure formation evaluation while drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pore pressure formation evaluation while drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pore pressure formation evaluation while drilling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2143499