Fracturing method for low-permeability oil and gas reservoir
The invention discloses a fracturing method for a low-permeability oil and gas reservoir, and belongs to the field of oil and gas development. The fracturing method comprises the steps that oil displacement slickwater carrying a first propping agent is injected into the target low-permeability oil a...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a fracturing method for a low-permeability oil and gas reservoir, and belongs to the field of oil and gas development. The fracturing method comprises the steps that oil displacement slickwater carrying a first propping agent is injected into the target low-permeability oil and gas reservoir for first fracturing construction; and after the first fracturing construction is completed, gel fracturing fluid carrying a second propping agent is continuously injected into the target low-permeability oil and gas reservoir for second fracturing construction, wherein the construction displacement of the first fracturing construction and the construction displacement of the second fracturing construction are both 10 m /min to 14 m /min, the total liquid amount of the oil displacement slickwater and the gel fracturing fluid is 5000 m to 15000 m , and the liquid amount of the oil displacement slickwater is 70%-90% of the total liquid amount. According to the method, the transformation effect and th |
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