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:
May. 11, 1976
Filed:
Feb. 14, 1975
Applicant:
Inventor:
Derrel D Webb, Houston, TX (US);
Assignee:
Houston Engineers, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166- 5 ; 175-7 ;
Abstract
A riser assembly in which each of the riser pipe and choke and kill lines includes a telescoping joint in a lower portion thereof which is at least partially pressure balanced so that the upper end of the assembly may be fixed to the drilling vessel.