Apparatus and method for inserting or removing a string of tubulars from a subsea borehole
First Claim
1. An apparatus for inserting or removing a string of tubulars from a sub-sea borehole, the apparatus comprising:
- a first, lower, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the first gripping mechanism being capable of gripping a portion of the string of tubulars;
a second, upper, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the second gripping mechanism being capable of gripping a portion of the string of tubulars;
wherein the first and second gripping mechanisms are moveable with respect to one another; and
a movement mechanism which, when actuated, moves one of the first and second gripping mechanisms with respect to the other of the first and second gripping mechanisms, such that the string of tubulars is inserted into or removed from the subsea borehole.
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Accused Products
Abstract
Apparatus and method for inserting or removing a string of tubulars from a subsea borehole, comprising:
a first, lower, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the first gripping mechanism being capable of gripping a portion of the string of tubulars;
a second, upper, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the second gripping mechanism being capable of gripping a portion of the string of tubulars;
wherein the first and second gripping mechanisms are moveable with respect to one another; and
a movement mechanism which, when actuated, moves one of the first and second gripping mechanisms with respect to the other of the first and second gripping mechanisms, such that the string of tubulars is inserted into or removed from the subsea borehole.
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Citations
28 Claims
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1. An apparatus for inserting or removing a string of tubulars from a sub-sea borehole, the apparatus comprising:
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a first, lower, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the first gripping mechanism being capable of gripping a portion of the string of tubulars;
a second, upper, gripping mechanism locatable subsea in the vicinity of the subsea borehole, the second gripping mechanism being capable of gripping a portion of the string of tubulars;
wherein the first and second gripping mechanisms are moveable with respect to one another; and
a movement mechanism which, when actuated, moves one of the first and second gripping mechanisms with respect to the other of the first and second gripping mechanisms, such that the string of tubulars is inserted into or removed from the subsea borehole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of inserting or removing a string of tubulars from a sub-sea borehole, the method comprising:
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providing a first gripping mechanism subsea in the vicinity of the subsea borehole, the first gripping mechanism being capable of gripping a portion of the string of tubulars;
providing a second gripping mechanism located subsea in the vicinity of the subsea borehole, the second gripping mechanism being capable of gripping a portion of the string of tubulars;
wherein the first and second gripping mechanisms are moveable with respect to one another;
providing a movement mechanism which is capable of moving one of the first and second gripping mechanisms with respect to the other of the first and second gripping mechanisms; and
actuating the movement mechanism such that the string of tubulars is inserted into, or removed from, the subsea borehole. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification