Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent
1990-04-18
1991-09-24
Kisliuk, Bruce M.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Indicating, testing or measuring a condition of the formation
175230, 166250, 73151, 73783, 73784, E21B 4900, G01B 530, G01N 310
Patent
active
050506900
ABSTRACT:
A method for obtaining in-situ stress measurements in a well is accomplished by installing a membrane packer on a drill string. The packer membrane is attached near the drilling tool and is capable of being radially expanded by fluid pressure to abut against the borehole. When a measurement of the in-situ stress is desired, a 3 way valve is actuated to divert drill string fluid into the packer until the membrane contacts the borehole. Further increments of fluid addition at this point are accomplished only by large increases in inflation fluid pressure. Pressure is increased (with little increase in volume) at a ramp rate until it reaches a value equal to the least principal stress, at which point the formation microfractures. The microfracture(s) result in a decreased pressure and/or volume ramp rate, which indicate their presence. Further pressurization would generate similar indications of fractures resulting from intermediate and maximum principle stresses. After fracturing, the pressure is reduced, and the 3 way valve is actuated to return the fluid to the drill bit.
REFERENCES:
patent: 2946565 (1960-07-01), Williams
patent: 2957341 (1960-10-01), Menard
patent: 3107729 (1963-10-01), Barry et al.
patent: 3606924 (1971-09-01), Malone
patent: 3796091 (1974-03-01), Serata
patent: 3858441 (1975-01-01), Comeau
patent: 4030345 (1977-06-01), Edmond et al.
patent: 4372380 (1983-02-01), Smith et al.
patent: 4491022 (1985-01-01), de la Cruz
patent: 4598591 (1986-07-01), Baud
patent: 4665984 (1987-05-01), Hayashi et al.
patent: 4711501 (1987-12-01), Maeda et al.
patent: 4733567 (1988-03-01), Serata
patent: 4899320 (1990-02-01), Hearn et al.
"The Hydrofacturing Stress Measuring Method and Recent Field Results" by B. C. Haimson, Int. J. Rock Mech. Min. Sci & Geomech. Abst., vol. 15, pp. 167-178, 1978.
"Earth Stress Measurements in the South Belridge Oil Field, Kern County, Calif.," by K. S. Hansen and W. R. Purcell, 1986, SPE #15641.
"Production Operations", vol. 1, by T. O. Allen and A. P. Roberts, Retrievable Packers, pp. 172-180, 1982.
"Long, Cement Inflatable Formation Packers", Completion Tool Company, CTC, Austin, Texas, Payzone Literature.
"Fundamentals of Rock Mechanics", by J. C. Jaeger and N. G. W. Cook, Chapter 15, pp. 384-394, London.
"Issues in Rock Mechanics, Chapter 15, Status of the Hydraulic Fracturing Method for In-Situ Stress Measurements," by M. Zoback et al., pp. 143-156, 1982.
"The Interpretation of Hydraulic Fracturing Pressure-Time Data for In-Situ Stress Determination," by S. H. Hickman et al., pp. 44-54, of Hydraulic Fracturing Stress Measurements, National Academy Press, 1983.
Jacobson William O.
Kisliuk Bruce M.
Union Oil Company of California
Wirzbicki Gregory F.
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