Invention Application
- Patent Title: METHOD AND APPARATUS OF HOT TAPPING MULTIPLE COAXIAL OR NESTED STRINGS OF UNDERWATER PIPING AND/OR TUBING FOR OVERTURNED WELLS OR PLATFORMS
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Application No.: US15853613Application Date: 2017-12-22
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Publication No.: US20180187813A1Publication Date: 2018-07-05
- Inventor: Harry MCGRAW , Leslie M. BLAND , Daniel S. BANGERT , Mark F. GRAVOUIA , Rizal MASINGKAN
- Applicant: TETRA Applied Technologies, LLC
- Main IPC: F16L41/06
- IPC: F16L41/06 ; B23B41/00 ; B23B47/28 ; E21B17/01 ; E21B29/10 ; E21B29/12

Abstract:
A method and apparatus for tapping into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle. The assembly includes a tapping tool connectable to the tubular via a saddle connection and an adjustable tapping clamp with adjustable support/locking feet, compression plate with view ports, and angularly adjustable hot tapping system, along with a drill/saw system.
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