Well template and method for use thereof

Abstract

Well template ( 11 ) for the protection of equipment for wells on the sea bed, comprising outer, upper template parts ( 17 a, 17 b ) and flippable protection hatches ( 15 ) which, in a closed position, protect well slots. The protection hatches ( 15 ) are mounted so that they can flip up about two non-parallel flip axes.

1 . A well template for protection of equipment for wells on a sea bed, the well template comprising:
 outer, upper template parts;   flippable protection hatches, wherein the flippable protection hatches, in a closed position, protect a plurality of well slots; and   wherein the flippable protection hatches are mounted so that they individually can flip open about two non-parallel flip axes.   
     
     
         2 . The well template according to  claim 1 , further comprising:
 two mainly parallel rows of well slots, wherein each row comprises at least two well slots;   wherein a number of the flippable protection hatches are arranged over each row; and   wherein at least some of the flippable protection hatches are mounted in an adjoining protection hatch so that they can flip open.   
     
     
         3 . The well template according to  claim 1 , wherein the well template comprises two mainly parallel rows of well slots with at least three well slots in each row and that placed over each well slot is an assigned protection hatch, wherein the flippable protection hatches arranged between two adjoining protection hatches are mounted in at least one of these adjoining flippable protection hatches so that they can flip open. 
     
     
         4 . The well template according to  claim 1 , wherein each flippable protection hatch is set up to flip up about two non-parallel flip axes and that groups of adjoining flippable protection hatches can be flipped up simultaneously about one of the flip axis which is common for the flippable protection hatches in such a group. 
     
     
         5 . The well template according to  claim 1 , wherein at least one of the flippable protection hatch is set up to be placed in an open position, whereby it lies on top of an adjoining protection hatch. 
     
     
         6 . The well template according to  claim 1 , wherein the flippable protection hatches are mainly horizontal when in a closed position, whereby they lie, in the main level with an upper part of a manifold arranged between two rows of well slots. 
     
     
         7 . A method for installing and/or operating equipment for wells on a sea bed, the method comprising:
 (i) arranging a well template with a number of protection hatches on the sea bed, said well template comprises a number of well slots and an area to receive a manifold that extends longitudinally;   (ii) flipping up a group of the protection hatches about a first flip axis mainly in parallel with the longitudinal extension of the manifold, away from a reception area for a manifold, with the protection hatches being mounted so that they can flip up about the first flip axis;   (iii) installing the manifold in said area;   (iv) during use of a remote controlled underwater vessel on the equipment in one of said number of well slots, arranging the protection hatch to said well slot in an open position flipped up about a second flip axis perpendicular to said first flip axis, as the protection hatches are also mounted so that they can flip up about the second flip axis.