Offshore multiple well drilling and production apparatus
First Claim
1. In an underwater apparatus for use in drilling, completing and producing a plurality of wells, the combination of at least one drilling and production template module comprisinga rigid frame adapted to be installed on the floor of a body of water before the wells are drilled,two sets of guide posts rigidly mounted on the frame in two horizontally spaced locations and extending upwardly therefrom to cooperate with guide means extending upwardly to an operational base at the surface of the body of water,two upright tubular well-locating and casing-support devices mounted on said frame each in a predetermined location with respect to a different one of said sets of guide posts, andtwo flowline connector bodies mounted on said frame, one of said flowline connector bodies occupying a first location near and spaced laterally from one of said locating and support devices, the other of said flowline connector bodies occupying a second location near and spaced laterally from the other of said locating and support devices;
- a riser module rigidly secured to the frame of said at least one drilling and production module for installation therewith and comprisinga plurality of upwardly exposed riser flowline connector hubs, anda set of guide posts fixed on the riser base module in predetermined positions relative to the riser flowline connector hubs to cooperate with guide means extending upwardly to the operational base at the surface of the body of water; and
conduit means communicating between respective ones of the flowline connector bodies of the drilling and production template and the riser flowline connector hubs.
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Accused Products
Abstract
A modular multiple well drilling and production template structure is combined with a production riser base module to provide an underwater apparatus which allows a plurality of wells to be drilled, completed and produced by operations carried out from a single vessel or platform without remote installation of flowlines.
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Citations
7 Claims
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1. In an underwater apparatus for use in drilling, completing and producing a plurality of wells, the combination of at least one drilling and production template module comprising
a rigid frame adapted to be installed on the floor of a body of water before the wells are drilled, two sets of guide posts rigidly mounted on the frame in two horizontally spaced locations and extending upwardly therefrom to cooperate with guide means extending upwardly to an operational base at the surface of the body of water, two upright tubular well-locating and casing-support devices mounted on said frame each in a predetermined location with respect to a different one of said sets of guide posts, and two flowline connector bodies mounted on said frame, one of said flowline connector bodies occupying a first location near and spaced laterally from one of said locating and support devices, the other of said flowline connector bodies occupying a second location near and spaced laterally from the other of said locating and support devices; -
a riser module rigidly secured to the frame of said at least one drilling and production module for installation therewith and comprising a plurality of upwardly exposed riser flowline connector hubs, and a set of guide posts fixed on the riser base module in predetermined positions relative to the riser flowline connector hubs to cooperate with guide means extending upwardly to the operational base at the surface of the body of water; and conduit means communicating between respective ones of the flowline connector bodies of the drilling and production template and the riser flowline connector hubs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification