Method and system for pre-drill pore pressure prediction

Details Method and system for pre-drill pore pressure prediction Method and system for pre-drill pore pressure prediction

2007-08-23

2009-11-10

Kasenge, Charles R (Department: 2121)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C703S002000, C703S010000

Reexamination Certificate

active

07617051

ABSTRACT:
In general, the invention relates to a method for pore pressure prediction. The method includes obtaining a compressional wave (P-wave) velocity and a shear wave (S-wave) velocity for a pre-drill location, calculating an effective stress at the pre-drilling location using a stress-velocity relationship equation, the compressional wave (P-wave) velocity and the shear wave (S-wave) velocity, obtaining a total stress at the pre-drill location, calculating a predicted pore pressure, at the pre-drill location, using the effective stress, the total stress and a stress-pressure relationship equation, and adjusting a drilling operation associated with the pre-drill location, based on the predicted pore pressure.

REFERENCES:
patent: 5398215 (1995-03-01), Sinha et al.
patent: 5475650 (1995-12-01), Sinha et al.
patent: 5619475 (1997-04-01), Winkler
patent: 5838633 (1998-11-01), Sinha
patent: 6351991 (2002-03-01), Sinha
patent: 6430507 (2002-08-01), Jorgensen et al.
patent: 6694261 (2004-02-01), Huffman
patent: 6714873 (2004-03-01), Bakulin et al.
patent: 6968274 (2005-11-01), Tutuncu et al.
patent: 7042802 (2006-05-01), Sinha
patent: 7349807 (2008-03-01), Moos et al.
patent: 2003/0151975 (2003-08-01), Zhou et al.
patent: 2005/0197780 (2005-09-01), Moos et al.
Winkler, K.W. et al.; Measurements of Third-Order Elastic Constants in Rocks; J. Acoustic Soc. Am. 100(3); Sep. 1996; pp. 1392-1398 (7 pages).
Malinverno, A. et al.; “Integrating Diverse Measurements to Predict Pore Pressure With Uncertainities While Drilling”; SPE 90001, SPE Annual Technical Conference and Exhibition, Houston, Texas, Sep. 26-29, 2004; pp. 1-11 (11 pages).
Lee, D. et al.; “Using a Dynamic Mechanical Earth Model and Integrated Drilling Team to Reduce Well Costs and Drilling Risks in San Martin Field”; SPE84557, SPE Annual Technical Conference and Exhibition, Denver, Colorado, Oct. 5-8, 2003; pp. 1-8 (8 pages).
Castillo, D.A. et al.; “Reservoir Geomechanics Applied To Drilling and Completion Programs In Challenging Formations: Northwest Shelf, Timor Sea, North Sea and Colombia”; APPEA Journal 2000; pp. 509-521 (13 pages).
Leaney, W.S.; “Analysis of Multiazimuthal VSP Data for Anisotrophy and AVO”; 1999 Society of Exploration Geophysicists; Geophysics, vol. 64, No. 4, Jul.-Aug. 1999; pp. 1172-1180 (9 pages).
Harrison, A.R.; “Acquisition and Analysis of Sonic Waveforms From a Borehole Monopole and Dipole Source for the Determination of Compressional and Shear Speeds and Their Relation to Rock Mechanical Properties and Surface Seismic Data”; SPE20557, 65th Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, New Orleans, Louisiana, Sep. 23-26, 1990; pp. 267-282 (16 pages).
Sayers, C.M.; “Stress-Dependent Elastic Anisotrophy of Sandstones”; Geophysical Prospecting, 2002, 50, pp. 85-95 (11 pages).
Sayers, C.M.; “Stress-Dependent Seismic Anisotrophy of Shales”; 1999 Society of Exploration Geophysicists; Geophysics, vol. 64, No. 1, Jan.-Feb. 1999), pp. 93-98 (6 pages).
Sayers, C.M.; “Monitoring Production-Induced Stress Changes Using Seismic Waves”; SEG Int'l Exposition and 74th Annual Meeting, Denver, Colorado, Oct. 10-15, 2004 (4 pages).
Bowers, G.L.; “Pore Pressure Estimation From Velocity Data: Accounting for Overpressure Mechanisms Besides Undercompaction”; SPE Drilling & Completion, Jun. 1995; pp. 89-95 (7 pages).
Stone, D.B.; “Flow and Creep in the Solar System: Observations, Modeling and Theory”; Proceedings of the NATO Advanced Study Institute on Dynamic Modeling and Flow in the Earth and Planets, Jun. 17-28, 1991; pp. 175-195 (13 pages).
Wang, H.F.; “Theory of Linear Poroelasticity with Applications to Geomechanics and Hydrogeology”; Princeton University, 2000 (150 pages).
Poliakov, A.N.B. et al., “An Explicit Inertial Method for the Simulation of Viscoelastic Flow: An Evaluation of Elastic Effects on Diapiric Flow in Two-And Three-Layers Models”, D. B. Stone and S.K. Runcorn (eds.) Flow and Creep in the Solar System: Observations, Modeling and Theory, pp. 175-195; 1993.

Affiliated with

Also associated with

Rating

Method and system for pre-drill pore pressure prediction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for pre-drill pore pressure prediction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for pre-drill pore pressure prediction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4068726