US2017159403A1PendingUtilityA1

Sealing Devices, Wellbore Tubulars Including The Sealing Devices, And Hydrocarbon Wells Including The Wellbore Tubulars

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Assignee: TOLMAN RANDY CPriority: Dec 2, 2015Filed: Nov 1, 2016Published: Jun 8, 2017
Est. expiryDec 2, 2035(~9.4 yrs left)· nominal 20-yr term from priority
E21B 33/13E21B 33/138
39
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Claims

Abstract

Sealing devices, wellbore tubulars including the sealing devices, and hydrocarbon wells including the wellbore tubulars are disclosed herein. The sealing devices include a sealing device body that is sized and shaped to operatively engage with an aperture in the wellbore tubular and to form an at least partial fluid seal with the aperture. The sealing device body has a hardness of 55-80 durometer, a tensile strength of 14-24 megapascals (MPa), a percent elongation of 250-500 percent, a 100% tensile stress of 1.4-5.2 MPa, and/or a die C tear resistance of 26-44 kilonewtons/meter (kN/m). The wellbore tubulars include an elongate tubular body, an aperture extending through the elongate tubular body, and a sealing device operatively engaged with the aperture. The hydrocarbon wells include a wellbore and the wellbore tubular extending within the wellbore.

Claims

exact text as granted — not AI-modified
1 . A sealing device, comprising:
 a sealing device body sized and shaped to operatively engage with an aperture in a wellbore tubular to form an at least partial fluid seal with the aperture, wherein the sealing device body has:   a hardness of 55-80 durometer;   (ii) a tensile strength of 14-24 megapascals (Mpa);   (iii) a percent elongation of 250-500 percent;   (iv) a 100% tensile stress of 1.4-5.2 Mpa; and   (v) a die C tear resistance of 26-44 kilonewtons/meter (kN/m).   
     
     
         2 . The sealing device of  claim 1 , wherein a specific gravity of the sealing device body is at least 0.6 and at most 1.3. 
     
     
         3 . The sealing device of  claim 1 , wherein at least one of:
 (i) the sealing device body is at least substantially formed from a body material;   (ii) an entirety of the sealing device body is formed from the body material; and   (iii) the sealing device body is formed entirely from a single body material.   
     
     
         4 . The sealing device of  claim 3 , wherein the body material includes at least one of:
 (i) a polymeric material;   (ii) a rubber;   (iii) a nitrile rubber;   (iv) a hydrogenated nitrile butadiene rubber (HNBR); and   (v) a highly saturated HNBR.   
     
     
         5 . The sealing device of  claim 1 , wherein the sealing device body includes an outer covering, which is formed from a covering material, and a core, which is formed from a core material that is different from the covering material. 
     
     
         6 . The sealing device of  claim 5 , wherein the covering material includes at least one of:
 (i) a polymeric material;   (ii) a rubber;   (iii) a nitrile rubber;   (iv) a hydrogenated nitrile butadiene rubber (HNBR); and   (v) a highly saturated HNBR.   
     
     
         7 . The sealing device of  claim 5 , wherein the core material includes at least one of:
 (i) a material with a density that is less than a density of the covering material;   (ii) a buoyant material;   (iii) a foam;   (iv) a syntactic foam; and   (v) a rigid material.   
     
     
         8 . The sealing device of  claim 1 , wherein the sealing device body is at least one of:
 (i) spherical;   (ii) at least substantially spherical;   (iii) bulbous;   (iv) at least substantially bulbous;   (v) egg-shaped;   (vi) at least substantially egg-shaped;   (vii) ovoid; and   (viii) at least substantially ovoid.   
     
     
         9 . A wellbore tubular, comprising:
 an elongate tubular body having an inner surface that defines a tubular conduit and an outer surface that is configured to face a subterranean formation;   an aperture extending through the elongate tubular body to permit fluid communication between the tubular conduit and the subterranean formation; and   the sealing device of  claim 1 , wherein the sealing device is operatively engaged with the aperture and forms an at least partial fluid seal with the aperture to obstruct flow of a wellbore fluid from the tubular conduit into the subterranean formation.   
     
     
         10 . The wellbore tubular of  claim 9 , wherein a threshold fraction of the sealing device is extruded through the aperture. 
     
     
         11 . The wellbore tubular of  claim 10 , wherein the threshold fraction of the sealing device is at least 10 volume present and at most 50 volume present. 
     
     
         12 . The wellbore tubular of  claim 10 , wherein the threshold fraction of the sealing device is extruded through the aperture without tearing the sealing device. 
     
     
         13 . The wellbore tubular of  claim 9 , wherein at least a region of the sealing device body is deformed to a percent elongation of at least 100 percent. 
     
     
         14 . The wellbore tubular of  claim 9 , wherein a density of the sealing device is within a threshold percentage of a density of the wellbore fluid, wherein the threshold percentage of the density of the wellbore fluid is at least 80 percent and at most 125 percent. 
     
     
         15 . The wellbore tubular of  claim 9 , wherein the sealing device is at least substantially neutrally buoyant within the wellbore fluid. 
     
     
         16 . The wellbore tubular of  claim 9 , wherein the aperture is defined by at least one of:
 (i) a perforation formed within the tubular body, wherein the perforation is an irregularly shaped perforation formed by a shape charge perforation device; and   (ii) a selective stimulation port that is operatively attached to the tubular body, wherein the selective stimulation port includes a pre-formed sealing device seat, which is formed prior to the wellbore tubular being positioned within the subterranean formation.   
     
     
         17 . The wellbore tubular of  claim 9 , wherein the aperture is at least one of:
 not circular; and   (ii) elongate.   
     
     
         18 . The wellbore tubular of  claim 9 , wherein at least a portion of the sealing device body is conformed to a non-circular shape of the aperture. 
     
     
         19 . The wellbore tubular of  claim 9 , wherein the wellbore tubular includes at least one of:
 a casing string; and   (ii) inter-casing tubing.   
     
     
         20 . A hydrocarbon well, comprising:
 a wellbore extending within a subterranean formation; and   the wellbore tubular of  claim 9 , wherein the wellbore tubular extends within the wellbore.

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