US 9,808,873 B2
Method and apparatus for removing underwater platforms
Jon Khachaturian, New Orleans, LA (US)
Filed by Jon Khachaturian, New Orleans, LA (US)
Filed on Sep. 22, 2015, as Appl. No. 14/861,148.
Application 14/861,148 is a continuation of application No. 14/029,532, filed on Sep. 17, 2013, granted, now 9,138,817, issued on Sep. 22, 2015.
Claims priority of provisional application 61/702,125, filed on Sep. 17, 2012.
Prior Publication US 2016/0082530 A1, Mar. 24, 2016
Int. Cl. B23D 57/00 (2006.01); E02D 17/00 (2006.01); E02B 17/00 (2006.01); B23D 61/18 (2006.01)
CPC B23D 57/0084 (2013.01) [B23D 57/0007 (2013.01); E02B 17/00 (2013.01); B23D 61/185 (2013.01); E02B 2017/0052 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of removing an abandoned marine platform that extends below a seabed mud line comprising the steps of:
a) providing a frame having a perimeter that surrounds an open center portion;
b) fitting first and second spaced apart winches and a cutter cable to the frame, wherein the cutter cable is wound upon the winches, said cutter cable including a first cable end portion that is wound upon the first winch and a second cable end portion that is wound upon the second winch;
c) lowering the frame over the platform wherein the platform occupies the open center portion;
d) wherein in step “c” at least a part of the cutter cable is positioned below the mud line;
e) using the first and second winches to move the cutter cable to cut the platform below the mud line;
f) wherein in step “e” the cable is wound upon the first said winch and payed out from the second said winch; and
g) removing the cut platform from the seabed.