Perforating gun system and method
First Claim
Patent Images
1. A perforating gun system comprising:
- at least two gun sections coupled together at corresponding first ends through an adapter so that one of the at least two gun sections is angularly offset relative to another of the at least two gun sections; and
a spacer attached with one end to a second end of each of the at least two gun sections, each spacer configured to extend radially from the at least two gun sections so that another end of each spacer is free, the spacer and the adapter configured to position each gun section adjacent to a corresponding circumferential arc of an inner surface area of a well casing, to reduce a water gap between each gun section and the corresponding circumferential arc,wherein the corresponding circumferential arc of the inner surface area of the well casing is different for the at least two gun sections.
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Accused Products
Abstract
A perforating gun system having gun sections coupled together with adapters. Each of the gun sections are adjustable to be offset relative to one another and each gun section is also decentralized with respect to the inside diameter of the wellbore casing. Each of the gun sections are movable in succession to an interval in the wellbore casing to create perforations such that the percentage of the casing openings is large for substantial fluid flow. The alignment and diameters of the gun sections are chosen to occupy the entire inner diameter of the casing.
28 Citations
30 Claims
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1. A perforating gun system comprising:
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at least two gun sections coupled together at corresponding first ends through an adapter so that one of the at least two gun sections is angularly offset relative to another of the at least two gun sections; and a spacer attached with one end to a second end of each of the at least two gun sections, each spacer configured to extend radially from the at least two gun sections so that another end of each spacer is free, the spacer and the adapter configured to position each gun section adjacent to a corresponding circumferential arc of an inner surface area of a well casing, to reduce a water gap between each gun section and the corresponding circumferential arc, wherein the corresponding circumferential arc of the inner surface area of the well casing is different for the at least two gun sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A perforating method comprising the steps of:
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(1) providing a perforating gun system comprising at least two gun sections coupled together at corresponding first ends through an adapter so that, one of the at least two gun sections is angularly offset relative to another of the at least two gun sections; (2) deploying the gun system into a well casing; (3) positioning a first gun section of the at least two gun sections at the predetermined position in the well casing, a second end of the first pun section being attached to an end of a first spacer, the first spacer being configured to extend radially from the first gun section so that another end of the first spacer is free, and the first spacer is configured to position the first gun section adjacent to a first circumferential arc of an inner surface area of the well casing, to reduce a first water gap between the first gun section and the first circumferential arc of the inner surface area of the well casing; (4) perforating an interval of the well casing with the first gun section; (5) moving a next gun section in the at least two gun sections to the predetermined position in the well casing, a second end of the next gun section being attached to an end of a second spacer, the second spacer being configured to extend radially from the next gun section so that another end of the second spacer is free, and the second spacer is configured to position the next gun section adjacent to a second circumferential arc of the inner surface area of the well casing, to reduce a second water gap between the next gun section and the second circumferential arc of the inner surface area of the well casing; (6) perforating the predetermined position with the next gun section; and (7) repeating steps (5) and (6) until all the gun sections perforate at the predetermined position, wherein the first circumferential arc is different from the second circumferential arc. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification