The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1993
Filed:
Sep. 24, 1991
Laurent E Muller, Houston, TX (US);
Steven L Anyan, Sugar Land, TX (US);
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
A new pump or injection apparatus is adapted to be connected between a pipe and a valve and is adapted to either pump well fluids from a wellbore or inject fluids into a formation traversed by the wellbore. The valve includes a full bore passage and a surrounding inlet flow channel. The new pump or injection apparatus includes an apparatus responsive to a movement of the pipe in a longitudinal direction for closing the full bore passage of the valve and opening the surrounding inlet flow channel; when the full bore passage is closed and inlet flow channel is opened, a first section rotates circumferentially in response to a circumferential rotation of the pipe; a second section reciprocates back and forth in a longitudinal direction in response to the circumferential rotation of the first section; and a third section either receives the well fluids uphole wellbore and subsequently pushes the received well fluids uphole or injects fluids in the formation traversed by the wellbore in response to the reciprocation of the second section. The full bore passage of the valve optionally enables other tools, such as drill stem test tools suspending by wireline, to pass through the pump apparatus.