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:
Oct. 04, 1977
Filed:
Jul. 12, 1976
Bobby F Goad, Spring, TX (US);
Baker International Corporation, Orange, CA (US);
Abstract
Apparatus for adjusting the distance between a lower tubing hanger anchored in a well casing to support a depending lower tubing string, and an upper tubing hanger at the well head, in which an adjustable spacer device has its lower end connected to the lower tubing hanger and its upper end to the lower end of a safety valve connected to an upper tubing string extending to the upper tubing anchor, the valve being controlled hydraulically by fluid under pressure imparted through a control line strapped, or otherwise secured, to the upper tubing string and extending from the top of the well to the safety valve. The upper tubing string, safety valve and control line, as well as the upper portion of the spacer, are rotatable as a unit with respect to the lower portion of the spacer to lower the unit relative to the lower tubing hanger until the upper tubing hanger lands on its well head seat, such action occurring without twisting the control tubing relative to the safety valve.