Methods of Enhancing Fracture Conductivity of Subterranean Formations Propped with Cement Packs
First Claim
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1. A method comprising:
- providing a wellbore in a subterranean formation having at least one fracture;
providing an expandable cementitious material;
introducing the expandable cementitious material into the at least one fracture in the subterranean formation;
curing the expandable cementitious material so as to form a cement pack,wherein the curing of the expandable cementitious material expands the expandable cementitious material such that at least one microfracture is created within the at least one fracture in the subterranean formation; and
acid-fracturing the at least one fracture in the subterranean formation.
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Abstract
Methods of treating a subterranean formation including providing a wellbore in a subterranean formation having at least one fracture; providing an expandable cementitious material; introducing the expandable cementitious material into the at least one fracture in the subterranean formation; curing the expandable cementitious material so as to form a cement pack, wherein the curing of the expandable cementitious material expands the expandable cementitious material such that at least one microfracture is created within the at least one fracture in the subterranean formation; and acid-fracturing the at least one fracture in the subterranean formation.
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Citations
20 Claims
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1. A method comprising:
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providing a wellbore in a subterranean formation having at least one fracture; providing an expandable cementitious material; introducing the expandable cementitious material into the at least one fracture in the subterranean formation; curing the expandable cementitious material so as to form a cement pack, wherein the curing of the expandable cementitious material expands the expandable cementitious material such that at least one microfracture is created within the at least one fracture in the subterranean formation; and acid-fracturing the at least one fracture in the subterranean formation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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providing a wellbore in a subterranean formation having at least one fracture; providing an expandable cementitious material; introducing the expandable cementitious material into the at least one fracture in the subterranean formation; and curing the expandable cementitious material so as to form a cement pack, wherein the curing of the expandable cementitious material expands the expandable cementitious material such that at least one microfracture is created within the at least one fracture in the subterranean formation. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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providing a wellbore in a subterranean formation having at least one fracture; providing an expandable cementitious material; providing a breakable gel fluid; introducing the expandable cementitious material into the at least one fracture in the subterranean formation; introducing the breakable gel fluid into the wellbore in the subterranean formation so as to prevent the expandable cementitious material from migrating out of the at least one fracture in the subterranean formation; curing the expandable cementitious material so as to form a cement pack, wherein the curing of the expandable cementitious material expands the expandable cementitious material such that at least one microfracture is created within the at least one fracture in the subterranean formation; breaking the breakable gel fluid; and removing the broken breakable gel fluid from the subterranean formation. - View Dependent Claims (18, 19, 20)
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Specification