STRADDLE PACKER SYSTEM
First Claim
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1. A straddle packer system, comprising:
- an upper seal member;
a lower seal member;
an upper equalizing valve movable into a first unloading position to equalize pressure across the upper seal member, wherein the upper seal member does not move when the upper equalizing valve is moved into the first unloading position;
a lower equalizing valve movable into a second unloading position to equalize pressure across the lower seal member, wherein the lower seal member does not move when the lower equalizing valve is moved into the second unloading position; and
an anchor.
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Abstract
A straddle packer system includes an upper seal member, a lower seal member, an upper equalizing valve configured to equalize pressure across the upper seal member, a lower equalizing valve configured to equalize pressure across the lower seal member, and an anchor. The upper and lower seal members do not move when actuating the upper and lower equalizing valves, respectively, into an unloading position to equalize the pressure across the upper and lower seal members.
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Citations
25 Claims
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1. A straddle packer system, comprising:
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an upper seal member; a lower seal member; an upper equalizing valve movable into a first unloading position to equalize pressure across the upper seal member, wherein the upper seal member does not move when the upper equalizing valve is moved into the first unloading position; a lower equalizing valve movable into a second unloading position to equalize pressure across the lower seal member, wherein the lower seal member does not move when the lower equalizing valve is moved into the second unloading position; and an anchor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of operating a straddle packer system, comprising:
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lowering the system into a wellbore; actuating an anchor of the system into engagement with the wellbore; energizing an upper seal member and a lower seal member of the system to isolate a section of the wellbore; equalizing pressure across the upper seal member by applying a tension force to actuate an upper equalizing valve of the system, wherein the upper seal member does not move when the upper equalizing valve is actuated by the tension force; and equalizing pressure across the lower seal member by applying the tension force to actuate a lower equalizing valve of the system, wherein the lower seal member does not move when the lower equalizing valve is actuated by the tension force. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification