System for gas hydrate production and method thereof
First Claim
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1. A system for gas hydrate production, the system comprising:
- a tubular having a plurality of ports, the plurality of ports including;
a first port configured to automatically open at a first differential pressure between an interior of the tubular and a band of gas hydrate, and to remain closed at differential pressures below the first differential pressure; and
,a second port configured to remain closed at the first differential pressure, and to automatically open at a second differential pressure between the interior of the tubular and the band of gas hydrate, the second differential pressure greater than the first differential pressure, the second port located uphole of the first port; and
,a pressure reducing mechanism within the tubular, the pressure reducing mechanism located uphole of the first and second ports, the pressure reducing mechanism configured to reduce internal pressure within the tubular and across both the first and second ports;
wherein the second differential pressure to open the second port is achieved via introduction of gas from the band of gas hydrate through the first port, which lowers the internal pressure within the tubular.
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Abstract
A system for gas hydrate production. The system includes a tubular having a plurality of ports. The plurality of ports includes a first port configured to automatically open at a first differential pressure, and to remain closed at differential pressures below the first differential pressure. A second port configured to remain closed at the first differential pressure, and to automatically open at a second differential pressure greater than the first differential pressure; wherein the second port is located uphole of the first port. Also included is a method of improving methane hydrate production.
57 Citations
18 Claims
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1. A system for gas hydrate production, the system comprising:
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a tubular having a plurality of ports, the plurality of ports including; a first port configured to automatically open at a first differential pressure between an interior of the tubular and a band of gas hydrate, and to remain closed at differential pressures below the first differential pressure; and
,a second port configured to remain closed at the first differential pressure, and to automatically open at a second differential pressure between the interior of the tubular and the band of gas hydrate, the second differential pressure greater than the first differential pressure, the second port located uphole of the first port; and
,a pressure reducing mechanism within the tubular, the pressure reducing mechanism located uphole of the first and second ports, the pressure reducing mechanism configured to reduce internal pressure within the tubular and across both the first and second ports; wherein the second differential pressure to open the second port is achieved via introduction of gas from the band of gas hydrate through the first port, which lowers the internal pressure within the tubular. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of improving methane hydrate production, the method comprising:
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inserting a ported tubular into a borehole; aligning first and second ports with at least one band of methane hydrate, the second port positioned uphole of the first port; reducing pressure within the tubular and across both the first and second ports with a pressure reducing mechanism located uphole of the second port; automatically opening the first port when a first differential pressure between an interior of the tubular and the at least one band of methane hydrate is reached; maintaining the second port in a closed condition at the first differential pressure; increasing differential pressure from the first differential pressure to a second differential pressure by introducing methane gas through the first port, wherein the methane gas reduces pressure within the interior of the tubular; and
,automatically opening the second port at the second differential pressure between the interior of the tubular and the at least one band of methane hydrate, the second differential pressure greater than the first differential pressure. - View Dependent Claims (11, 12, 13, 14)
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15. A method of improving production in a downhole environment, the method comprising:
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inserting a ported tubular into a borehole; aligning first and second ports in the tubular with at least one band of natural resources, the second port positioned uphole of the first port; reducing pressure within the tubular and across both the first and second ports with a pressure reducing mechanism located uphole of the second port; automatically opening the first port when a first differential pressure between an interior of the tubular and the at least one band is reached; maintaining the second port in a closed condition at the first differential pressure; reducing pressure within the interior of the tubular by introducing natural resources through the first port and into the interior, and increasing differential pressure from the first differential pressure to a second differential pressure by introducing gas from the at least one band through the first port; and
,automatically opening the second port at the second differential pressure between an interior of the tubular and the at least one band, the second differential pressure greater than the first differential pressure. - View Dependent Claims (16, 17, 18)
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Specification