Abstract: 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.
Type:
Grant
Filed:
August 10, 2010
Date of Patent:
August 14, 2012
Assignee:
Superior Energy Services, L.L.C.
Inventors:
Daniel James Turick, James Raymond Macias