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:
Sep. 11, 2001
Filed:
Mar. 10, 2000
Applicant:
Inventors:
Jim B. Surjaatmadja, Duncan, OK (US);
Gary T. Keene, Duncan, OK (US);
Steven R. Grundmann, Duncan, OK (US);
Assignee:
Halliburton Energy Services, Inc., Duncan, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/04 ; E21B 2/304 ; E21B 2/906 ;
U.S. Cl.
CPC ...
E21B 7/04 ; E21B 2/304 ; E21B 2/906 ;
Abstract
A method and apparatus using hydrajetting of fluid to cut a lateral casing window for drilling a side track. The apparatus comprises a J-sub having a J-slot therein which guides movement of a jetting nozzle such that a window may be abrasively jetted in well casing in the general shape of the J-slot. In an alternate embodiment, a hydraulically activated actuator sub is used to operate the J-sub. The actuator sub is activated by alternately pressurizing and depressurizing the actuator sub to apply longitudinal movement and torque to the J-sub.