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. 26, 2019
Filed:
May. 29, 2018
Applicant:
Krzysztof Jan Wajnikonis, Rosharon, TX (US);
Inventor:
Krzysztof Jan Wajnikonis, Rosharon, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01); E21B 43/01 (2006.01); E21B 19/00 (2006.01);
U.S. Cl.
CPC ...
E21B 17/015 (2013.01); E21B 19/004 (2013.01); E21B 43/0107 (2013.01);
Abstract
A novel configuration of lightly tensioned or substantially untensioned, i.e. substantially compliant mini-riser is provided to facilitate coiled tubing and/or wireline interventions in rigid catenary riser installations. Those can include in particular clearing hydrates that may accidentally plug risers or subsea pipelines connected to those risers. Existing Intervention Y units can be used, or they can be modified to suit design condition of particular installations. The mini-riser can be used with flexible joint hang-offs, Titanium Stress Joint hang-offs or with novel Spoolflex hang-offs.