Well gravel pack formation method

Details Well gravel pack formation method Well gravel pack formation method

1996-05-20

1997-09-23

Tsay, Frank

Wells

Processes

Graveling or filter forming

166311, E21B 4304

Patent

active

056694458

ABSTRACT:
The present invention provides an improved method of formimg a gravel pack in a well and in a subterranean formation penetrated by the well. The method basically comprises the steps of placing a pipe string in the well having a selectively operable shut-off valve and gravel pack forming tools including packer connected therto, and setting the packer to seal the annulus between the well and the pipe string. A pressurized fluid is introduced into the pipe string with the shut-off valve therein closed, and the shut-off valve is opened so that the pressurized fluid surges into the well below the packer and into the formation whereby debris is cleaned from the well and formation. Gravel is then introduced below the packer into the well bore and into the formation to form a gravel pack therein.

REFERENCES:
patent: 3627045 (1971-12-01), Lebourg
patent: 3721297 (1973-03-01), Challacombe
patent: 3743021 (1973-07-01), McCauley et al.
patent: 4658902 (1987-04-01), Wesson et al.
patent: 5069285 (1991-12-01), Nuckols
patent: 5127474 (1992-07-01), Schroeder, Jr. et al.
patent: 5131472 (1992-07-01), Dees et al.
patent: 5287930 (1994-02-01), McGill
patent: 5329998 (1994-07-01), King et al.
patent: 5341880 (1994-08-01), Thorstensen et al.

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