Apparatus and methods for limiting debris flow back into an...

Details Apparatus and methods for limiting debris flow back into an... Apparatus and methods for limiting debris flow back into an...

E - Fixed Constructions

21

B

E21B 43/08 (2006.01) E21B 43/12 (2006.01) E21B 43/16 (2006.01) E21B 43/24 (2006.01)

Patent

CA 2582128

In some embodiments, apparatus for assisting in reducing flowback of debris from an earthen formation into an underground fluid injection system includes a screen member disposed around and longitudinally moveable relative to a base pipe and shielded from direct contact with fluid as it is ejected from the base pipe. In various embodiments, apparatus for varying at least one flow characteristic of fluid injected into an earthen formation from a base pipe includes an isolation flow assembly remotely removably engageable with the base pipe and having a passage in fluid communication with a different sized fluid flow opening of the base pipe.

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