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. 10, 1985
Filed:
Jan. 17, 1985
Phillip W Schmuck, Spring, TX (US);
John V Salerni, Kingwood, TX (US);
Rodney J Wetzel, Woodlands, TX (US);
Baker International Corporation, Orange, CA (US);
Abstract
The invention provides a method and apparatus for effecting the perforating of a well casing and the gravel packing of the perforated areas of the well casing with one trip into the well of a combined perforating and gravel packing apparatus. This desirable objective is accomplished by a design of the crossover mandrel normally employed in gravel packing apparatus. The mandrel disclosed herein provides, in its run-in position, a continuous axial passage through its entire length, permitting a detonating bar to be dropped therethrough to actuate a perforating gun. Subsequent to the perforation operation, a ball is dropped and seated on an annular sleeve carried within the hollow mandrel which permits the development of internal pressure within the mandrel. Such internal pressure is employed not only to effect the setting of a fluid pressure actuated packer but also to shift the ball supporting sleeve downwardly and uncover a crossover port in the mandrel which permits the gravel packing operation to be carried out conventionally.