Hydraulically Controlled Burst Disk Subs (Hcbs)
AssigneeExxon Mobil Upstream Research Company
InventorsManh V. Phi, Pin Y. Huang, Michael D. Murrey
Life of this patent
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Abstract
A method and apparatus for treating a subterranean section surrounding a wellbore with a fluid. In one embodiment, the apparatus comprises a three-dimensional tubular element capable of fluid flow in a wellbore with at least one burst disk with a pre-determined pressure rating positioned at a desired location on the tubular wherein the burst disk ruptures at the pre-determined pressure at the desired location on the tubular in the wellbore. The method provides the ability to choose the order in which the subterranean interval sections surrounding a wellbore are treated with fluid.
Claims19
A wellbore apparatus comprising;
- a) a three-dimensional tubular element capable of fluid flow in a wellbore;
- b) a first set of openings and a second set of openings within the three-dimensional tubular element;
- c) at least one burst disk with a pressure rating positioned at a location within the three-dimensional tubular element between the first set of openings and the second set of openings, wherein the at least one burst disk is adapted to rupture at the pressure during well treatment at the location on the three-dimensional tubular element in the wellbore.
A method for treating a subterranean section surrounding a wellbore with a fluid comprising:
- a) providing a tubular member capable of fluid flow in a wellbore and having a plurality of burst disks, each of the plurality of burst disks with a pressure rating, wherein at least three of the plurality of burst disks are located at different intervals in the subterranean section and have different pressure ratings;
- b) increasing the pressure inside the tubular member until at least one of the plurality of burst disks ruptures at a predetermined pressure;
- c) treating the subterranean section surrounding the ruptured at least one of the plurality of burst disks based on productivity of each of the different intervals with a fluid by flowing the fluid through the ruptured the at least one of the plurality of burst disks;
- d) repeating steps b) and c) until each of the plurality of burst disks have been ruptured in an order based on productivity of each of the different intervals.
A method for treating subterranean sections surrounding a wellbore with a fluid comprising:
- providing a tubular member capable of fluid flow in a wellbore with a first burst disk with a first pressure rating and a second burst disk with a second pressure rating;
- treating a first subterranean section with a fluid by flowing the fluid through a first plurality of openings in the tubular member;
- increasing the pressure inside the tubular member until the first burst disk ruptures;
- treating a second subterranean section surrounding the ruptured first burst disk with a fluid by flowing the fluid through a second plurality of openings in the tubular member exposed by the ruptured first burst disk;
- increasing the pressure inside the tubular member until the second burst disk ruptures;
- and
- treating a third subterranean section surrounding the ruptured second burst disk with the fluid by flowing the fluid through a third plurality of openings in the tubular member exposed by the ruptured second burst disk.
Dependencies are inferred from the claim text.