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Urbanosky Harold J: Methods and apparatus for testing earth formations. Schlumberger Technology Corporation, Archambeau Jr Ernest R, Sherman William R, Moore Stewart F, January 14, 1975: US3859851 (126 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus for testing earth formations disclosed herein, fluid-admitting means are placed into sealing engagement with a potentially-productive earth formation. A first test chamber coupled to the fluid-admitting means is then slo ...


2
Bell William T: Methods and apparatus for testing earth formations composed of particles of various sizes. Schlumberger Technology Corporation, Archambeau Jr Ernest R, Sherman William R, Moore Stewart F, February 11, 1975: US3864970 (51 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus disclosed herein for testing earth formations of differing compositions, fluid-admitting means carrying a selectively-sized filter of a unique design are selectively extended into sealing engagement with a potentially-pr ...


3
Urbanosky Harold J, Whitten Frank R: Methods and apparatus for testing earth formations. Schlumberger Technology Corporation, Archambeau Jr Ernest R, Sherman William R, Moore Stewart F, June 4, 1974: US3813936 (36 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus for testing earth formations disclosed herein, fluid-admitting means are placed into sealing engagement with a potentially-producible earth formation and selectively-operable valve means on the fluid-admitting means are ...


4
Urbanosky Harold J: Methods and apparatus for testing earth formations. Schlumberger Technology Corporation, Archambeau Jr Ernest R, Sherman William R, Moore Stewart F, May 21, 1974: US3811321 (25 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus for testing earth formations disclosed herein, fluid-admitting means are placed into sealing engagement with a potentially-producible earth formation and selectively-operable valve means are rapidly opened to place a low ...


5
Whitten Frank R, Hoppe Joachim A: Methods and apparatus for testing earth formations. Schlumberger Technology Corporation, Archambeau Jr Ernest R, Sherman William R, Moore Stewart F, January 14, 1975: US3859850 (24 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus for testing earth formations disclosed herein, fluid-admitting means are placed into sealing engagement with a potentially producible earth formation. Selectively operable valve means are opened to place the fluid-admitt ...


6
Urbanosky Harold J: Methods and apparatus for testing earth formations. Archambeau Jr Ernest R, January 7, 1975: US3858445 (21 worldwide citation)

In the representative embodiments of the new and improved methods and apparatus for testing earth formations disclosed herein, fluid-admitting means are placed into sealing engagement with a potentially-producible earth formation. Selectively-operable valve means are opened to place the fluid-admitt ...


7
Methods and apparatus for testing earth formations. Schlumberger, December 14, 1977: GB1495284-A (4 worldwide citation)

1495284 Testing earth formations in situ SCHLUMBERGER Ltd 11 Dec 1974 [12 Dec 1973] 53510/74 Heading G1S [Also in Division E1] Apparatus for testing the fluid productivity of earth formations, as 13, comprises a tool 10 suspended in a well bore 12 and carrying fluidadmitting means 20 engaging the wa ...


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Methods and apparatus for testing earth formations composed of particles of various sizes. Schlumberger, September 14, 1977: GB1485853-A (3 worldwide citation)

1485853 Formation fluid sampling SCHLUMBERGER Ltd 17 Oct 1974 [18 Oct 1973 (2)] 45020/74 Heading E1F Formation fluid samples are obtained from a borehole 12 whose walls have a lining of mudcake by packing off a portion of the borehole wall to isolate that portion from fluids in the borehole and indu ...


9
Methods and apparatus for testing earth formations. Schlumberger, November 8, 1978: GB1531851-A (3 worldwide citation)

1531851 Formation testers SCHLUMBERGER Ltd 20 Jan 1976 [22 Jan 1975] 2091/76 Heading E1F In a formation fluid testing tool of the type in which a tubular member 43 containing a filter 48 and surrounded by a sealing member 38 is pressed into the formation 13, the end of the tubular member 43 is initi ...


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