Formation evaluation testing apparatus and associated methods

Details Formation evaluation testing apparatus and associated methods Formation evaluation testing apparatus and associated methods

1997-10-22

1999-12-28

Neuder, William

Wells

Processes

With indicating, testing, measuring or locating

166386, 166100, 166187, E21B 4700

Patent

active

060068345

ABSTRACT:
A formation testing apparatus and associated methods provide efficient and convenient evaluation of formations. In a described embodiment, a formation testing apparatus has a pair of relatively closely spaced apart inflatable packer elements exteriorly disposed thereon. When positioned opposite a formation, the packer elements are inflated to substantially isolate a volume of the wellbore adjacent the formation. With the packer elements inflated and sealingly engaging the formation, the elements are alternately further inflated and partially deflated to thereby alternately expand and compress the volume therebetween. The volume is in fluid communication with an interior fluid passage of the apparatus, and the alternate expansion and compression of the volume results in fluid being pumped through the fluid passage.

REFERENCES:
patent: 4566535 (1986-01-01), Sanford
patent: 5540280 (1996-07-01), Schultz et al.
patent: 5555945 (1996-09-01), Schultz et al.
patent: 5687791 (1997-11-01), Beck et al.
patent: 5803186 (1998-09-01), Berger et al.

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