Selectively locking open a downhole tester valve

Details Selectively locking open a downhole tester valve Selectively locking open a downhole tester valve

1997-01-23

1998-10-27

Schoeppel, Roger J.

Wells

Submerged well

Testing

166323, 166324, 166373, E21B 3410

Patent

active

058266577

ABSTRACT:
A downhole tool apparatus (34) including a housing (42) adapted to be connected in a pipe string (30), the housing (42) having a generally cylindrical bore (44) defined therein, an operating assembly (112) disposed within the cylindrical bore (44) of the housing (42) having open and closed positions and a mandrel (142) slidably received in the cylindrical bore (44) of the housing (42) and adapted to be selectively telescoped between first and second axial positions relative to the housing (42) to manipulate the operating assembly (112) and selectively rotated between first and second circumferential positions relative to the housing (42) to selectively lock the mandrel (142) in an axial position relative to the housing (42).

REFERENCES:
patent: 4633952 (1987-01-01), Ringgenberg
patent: 4665983 (1987-05-01), Ringgenberg
patent: 4711305 (1987-12-01), Ringgenberg
patent: 5484022 (1996-01-01), Coutts et al.

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