Measuring and testing – Borehole or drilling – Downhole test
Patent
1990-06-25
1992-08-18
Williams, Hezron E.
Measuring and testing
Borehole or drilling
Downhole test
73151, 166264, E21B 4910
Patent
active
051388774
ABSTRACT:
A method and apparatus for determining the horizontal pressure gradient of n earth formation penetrated by a borehole. This is done by:
REFERENCES:
patent: 2313176 (1943-03-01), Shelby
patent: 2747042 (1956-05-01), Doll
patent: 3103811 (1963-09-01), Ayres et al.
patent: 3577781 (1971-05-01), Lebourg et al.
Brock Michael
Kiesel William D.
Louisiana State University and Agricultural and Mechanical Colle
Tucker Robert C.
Williams Hezron E.
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