Fiber-reactive aqueous fracturing fluid for compact reservoir transformation, and use method thereof

Abstract

The present invention provides a fiber-reactive aqueous fracturing fluid for compact reservoir transformation, and a use method thereof, wherein the raw materials comprise, by weight, 0.05-0.1% of a friction-reducing agent, 0.5-2.0% of a composite synergist, 0.1-0.3% of water-soluble fibers, and the balance of water. The use method of the fiber-reactive aqueous fracturing fluid comprises: during the fracturing construction process, uniformly mixing the friction-reducing agent, the composite synergist, the water-soluble fibers and the water, and pumping into the stratum. According to the present invention, the fiber-reactive aqueous fracturing fluid has characteristics of no thickener, low damage, low friction, simple formula, easy preparation, strong operability and the like; and the thickener is not used and the residue is less, such that the reservoir damage can be reduced at a maximum, and the fiber-reactive aqueous fracturing fluid is especially suitable for the compact reservoir fracturing transformation.

Description

technical field [0001] The invention relates to a fiber-activated water fracturing fluid for compact reservoir reconstruction and a method for using the same, belonging to the technical field of petroleum exploitation. Background technique [0002] The general fracturing fluid is mainly composed of thickener, crosslinking agent and other additives compatible with the reservoir. Since the main purpose of fracturing fluid is to transport fracturing proppant and reduce fluid loss, crosslinking agent is usually used to form Jelly has better proppant-carrying ability and lower fluid loss ability, but because the viscosity of the fracturing fluid increases rapidly after cross-linking, it has a relatively large frictional resistance when flowing in the pipe string. Domestic active water fracturing mainly guarantees the formation of sand carrying and fractures through large-scale and large-displacement injection, but the construction friction of active water fracturing is high under...

AI Technical Summary

Problems solved by technology

[0002] The general fracturing fluid is mainly composed of thickener, crosslinking agent and other additives compatible with the reservoir. Since the main purpose of fracturing fluid is to transport fracturing proppant and reduce fluid loss, crosslinking agent is usually used to form Gel has better proppant-carrying ability and lower fluid loss ability, but because the viscosity of the fracturing fluid increases rapidly after cross-linking, it has a relatively large frictional resistance when flowing in the pipe string

Domestic active water fracturing mainly guarantees the formation of sand and fractures through large-scale and large-displacement injection, but the construction friction of active water fracturing is high under large displacement.

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