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:
Mar. 27, 2018
Filed:
Nov. 29, 2016
Chevron U.s.a. Inc., San Ramon, CA (US);
Jimmie Dean Adkins, San Ramon, CA (US);
Dana Earl Witt, Katy, TX (US);
CHEVRON U.S.A. INC., San Ramon, CA (US);
Abstract
Disclosed are systems and methods for removing components of a subsea well having a wellhead located on a seabed and multiple well casings connected to the wellhead and penetrating the seabed. A cutting tool is lowered from a floating vessel to a predetermined cut location in the subsea well. The cutting tool is at the end of a utility line connected to an actuator located on the floating vessel. The cutting tool is used to sever the multiple well casings at the predetermined cut location such that the multiple well casings are completely severed concurrently. The wellhead and the severed multiple well casings are raised together from the seabed to the floating vessel as a single assembly. Various forms of the cutting tool are disclosed. The methods disclosed can include an integrated procedure for dispensing cement to plug the well at the seabed as the well components are being removed.