Wellbore primary barrier and related systems
First Claim
1. A wellbore apparatus comprisinganchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and whipstock apparatus connected to the anchor apparatus.
3 Assignments
0 Petitions
Accused Products
Abstract
A new wellbore apparatus has been invented which, in certain aspects, has anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus to prevent it from bursting or deflating. A method for closing off a bore in a well has been invented which, in certain aspects, includes installing wellbore apparatus in the bore, the wellbore apparatus comprising anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus interconnected with the anchor apparatus and selectively inflatable with fluid under pressure to close off the bore to fluid flow therethrough, and the wellbore apparatus upon anchoring in the bore and inflation of the sealing apparatus including a primary barrier in the bore.
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Citations
54 Claims
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1. A wellbore apparatus comprising
anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and whipstock apparatus connected to the anchor apparatus.
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20. A wellbore apparatus comprising
anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, orienting apparatus for orienting the anchor apparatus to a desired orientation within the bore, and wherein the orienting apparatus includes a measurement while drilling device.
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21. A wellbore apparatus comprising
anchor apparatus for selectively anchoring in a bore the anchor apparatus actuatable by fluid under pressure, temperature compensation apparatus for maintaining fluid under pressure in the sealing apparatus at a desired pressure, and wherein the temperature compensating apparatus comprises a cylinder in which is displaceably positioned a reciprocatingly slidable piston which is movable in response to fluid pressure variations and which has a cavity in fluid communication with a cavity of said cylinder, the piston having a first piston surface which is influenced by the fluid pressure inside the sealing apparatus, and a second piston surface facing a direction opposite the first piston surface which second piston surface is influenced by fluid pressure in the bore, the two piston surfaces having mutually different areas, the temperature compensator arranged to regulate, on the basis of said difference in piston surface area, internal fluid pressure in the sealing apparatus in relating to ambient fluid pressure effective downstream of the sealing apparatus and thus constituting a reference pressure for the internal pressure of the sealing apparatus.
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24. A wellbore apparatus comprising
anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus, and orienting apparatus for orienting the anchor apparatus to a desired orientation within the bore, wherein the orienting apparatus includes a measurement while drilling device.
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25. A wellbore apparatus comprising
anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus, and whipstock apparatus connected to the anchor apparatus.
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52. A multi-bore wellbore system comprising
a main wellbore cased with casing, at least one lined lateral wellbore extending from and in fluid communication with the main wellbore, at least one of the casing of the main wellbore and the at least one lined lateral wellbore closed off by a primary barrier comprising a wellbore apparatus comprising anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, temperature compensating apparatus for maintaining a desired fluid pressure in the anchor apparatus and in the sealing apparatus, and whipstock apparatus connected to the anchor apparatus, and wherein the temperature compensating apparatus comprises a cylinder in which is displaceably positioned a reciprocatingly slidable piston which is movable in response to fluid pressure variations and which has a cavity in fluid communication with a cavity of said cylinder, the piston having a first piston surface which is influenced by the fluid pressure inside the sealing apparatus, and a second piston surface facing a direction opposite the first piston surface which second piston surface is influenced by fluid pressure in the bore, the two piston surfaces having mutually different areas, the temperature compensator arranged to regulate, on the basis of said difference in piston surface area, internal fluid pressure in the sealing apparatus in relating to ambient fluid pressure effective downstream of the sealing apparatus and thus constituting a reference pressure for the internal pressure of the sealing apparatus.
Specification