High pressure large bore well conduit system

Abstract

Well conduit system and methods using a first outer conduit wall and at least one second inner conduit wall positioned through a wellhead to define an annulus with radial loading surfaces extending across the annulus and radially between at least two of the conduit walls to form passageways through subterranean strata concentrically, wherein an inner pipe body of greater outer diameter is inserted into an outer pipe body of lesser inner diameter by elastically expanding the circumference of the outer pipe body and elastically compressing the circumference of the inner pipe body, using a hoop force exerted therebetween. Releasing the hoop force after insertion will release the elastic expansion and compression of the pipe bodies to abut the radial loading surfaces within the annulus for sharing elastic hoop stress resistance and thereby forming a greater effective wall thickness, capable of containing higher pressures than the conduit walls could otherwise bear.

Description

[0001] Cross References to Related Applications [0002] This application is a Patent Cooperation Treaty (PCT) application claiming the title of British Patent Application No. GB1203649.7, filed March 1, 2011, entitled "High Pressure Large Bore Well Conduit System" (High Pressure Large Bore Well Conduit System) Priority; the UK Patent Application No. GB1203649.7 claims priority to: "Manifold String For Selectively Controlling Flowing Fluid Streams of PCT Application No. US2011 / 000377 for "Varying Velocities In Wells From A Single Main Bore"; filed March 15, 2011 and British Patent Application No. 1104278.5 with the same title, published on 12 October 2011 as GB2479432A; PCT Application No. US2011 / 000372 for Controlled Well Construction and Operation Systems and Methods Usable for Hydrocarbon Operations, Storage and Solution Mining" and British Patent Application No. GB1104280.1 with the same title, filed on March 15, 2011 and published as GB2479043A on September 28, 2011, the...

AI Technical Summary

Problems solved by technology

[0063] There is a need for increased recovery of fluids within subterranean deposits and the use of fewer main boreholes penetrating through the groundwater formation, which cannot be achieved by utilizing conventional single concentric bore well designs due to the increased recovery rate Typically requires additional wells or penetration through groundwater formations and cap rocks containing toxic fluids, thereby increasing the risk of leakage into said groundwater formations

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