Boots – shoes – and leggings
Patent
1993-10-15
1995-10-31
Hayes, Gail O.
Boots, shoes, and leggings
324339, 324366, E21B 4700
Patent
active
054635497
ABSTRACT:
Characteristics of invasion profiles exhibiting effects of gravity, and particularly their manifestations on resistivity logs of a plurality of different radial depths of investigation, are used to determine formation characteristics, including vertical permeability. One embodiment includes the following steps: suspending a logging tool in the borehole; producing a plurality of resistivity measurements, having respectively different radial depths of investigation, as the logging device is moved through the borehole, to obtain a plurality of resistivity logs; determining the presence of a buoyancy marker in the resistivity logs in a formation bed invaded with filtrate from the drilling mud, and the extent of the buoyancy marker; and determining permeability of the formations as a function of the extent of the buoyancy marker.
REFERENCES:
patent: 4712424 (1987-12-01), Herron
patent: 4742459 (1988-05-01), Lasseter
patent: 4764903 (1988-08-01), Siebert
patent: 4773264 (1988-09-01), Herron
patent: 4858198 (1989-08-01), Weissman
patent: 4873488 (1989-10-01), Barber et al.
patent: 4890487 (1990-01-01), Dussan V. et al.
patent: 5241273 (1993-08-01), Luling
patent: 5310013 (1994-05-01), Kishino et al.
patent: 5335542 (1994-08-01), Ramakrishnan et al.
H. G. Doll, "Filtrate Invasion In Highly Permeable Sands", The Petroleum Engineer, 1955.
Hunka et al., "A New Resistivity Measurement System For Deep Formation Imaging And High Resolution Formation Evaluation", SPE-20559, In Annual Technical Conference And Exhibition Proceedings, Formation Evaluation and Reservior Geology, Society of Petroleum Engineers, 1991.
T. D. Barber, "Introduction To the Phasor Dual Induction Tool", Journal Of Petroleum Technology, Sep. 1985.
N. Schuster et al., "Application of the IFF/Sonic Combination Tool To Gulf Coast Formations", Gulf Coast Assoc. of Geological Societies Transactions, 1971.
Barber, "Phasor Induction Tool", Schlumberger WTS, 1989.
Singer et al., "The Effect Of Transition Zones On The Response Of Induction Logs", SWPA Annual Logging Symposium, 1988.
Allen et al., Invasion Revisited, Oilfield Review, 1991.
B. Anderson et al., "ELMOD--Putting Electromagnetic Modeling To Work To Improve Resistivity Log Interpretation", Transactions of SPWLA 30th Annual Logging Symposium, Jun., 1989.
A. Q. Howard, "A New Invasions Model For Resistivity Log Interpretation", The Log Analyst, Mar.-Apr., 1992.
Anderson Barbara I.
Auzerais Francois M.
Dussan V. Elizabeth B.
Hayes Gail O.
Novack Martin M.
Pojunas Leonard W.
Schlumberger Technology Corporation
Thomas Joseph
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