Method and apparatus for wellbore gas separation
First Claim
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1. A method of separating gases in a wellbore, the method comprising:
- placing a wellbore within a production zone;
removing a hydrocarbon gas from the wellbore; and
removing at least one contaminant from the hydrocarbon gas with a system including a first preferentially selective material positioned in the wellbore and a second preferentially selective material positioned in the wellbore, wherein the first preferentially selective material is permeable to different materials than the second preferentially selective material.
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Abstract
A downhole preferential hydrocarbon gas recovery system and method employ preferentially selective materials to separate the hydrocarbon gas from contaminants. According to one aspect of the invention, the preferentially selective materials are arranged in tubes with the hydrocarbon gas flowing through the tubes and the contaminants permeating out through the preferentially selective material.
32 Citations
32 Claims
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1. A method of separating gases in a wellbore, the method comprising:
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placing a wellbore within a production zone;
removing a hydrocarbon gas from the wellbore; and
removing at least one contaminant from the hydrocarbon gas with a system including a first preferentially selective material positioned in the wellbore and a second preferentially selective material positioned in the wellbore, wherein the first preferentially selective material is permeable to different materials than the second preferentially selective material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for separating gases in a wellbore, the system comprising:
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a first preferentially selective material configured to be positioned in the wellbore, the first preferentially selective material separating a first contaminant from a hydrocarbon gas; and
a second preferentially selective material configured to be positioned in the wellbore, the second preferentially selective material separating a second contaminant from the hydrocarbon gas. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for separating gases in a wellbore, the system comprising:
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at least one tube of preferentially selective material configured to be positioned in the wellbore for removing a first contaminant from a hydrocarbon gas passing through the tube; and
a contaminant collection zone surrounding the at least one tube and isolated from the hydrocarbon gas for collecting the removed contaminant. - View Dependent Claims (30, 31, 32)
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Specification