US 10,240,082 B2 · Method for design of production wells and injection wells

Abstract

The disclosure claimed herein relates to well systems for various fluids production, in particular, for production of fluids from hydrocarbon-containing formations using hydraulic fracturing process. According to the proposed method, injecting into well of fracturing fluid not containing proppant is performed to form a fracture in the formation, after which fracturing fluid is injected into the wellbore in pulse mode; the pulse mode provides at least one pulse of injecting fracturing fluid containing proppant, and at least one pulse of proppant-free fluid. Also, methods for fluid production and injection are proposed. Methods for fluids production, injection and recovery using hydraulic fracturing method are proposed. The proposed method increase the well lifetime due to reduced fluid flow impact on fracture walls and proppant clusters.

Claims15

Dependent claims

A method of hydraulic fracturing of a formation penetrated by a well having a wellbore and a lifetime, which comprises:

injecting fracturing fluid without proppant into the wellbore, thereby creating a fracture in the formation,
injecting fracturing fluid into the wellbore in a pulse mode, the pulse mode providing at least one pulse of injecting fracturing fluid with proppant and at least one pulse of injecting fracturing fluid without proppant,
wherein, during the at least one pulse of injecting fluid with proppant, the reinforcing and/or consolidation material concentration is increased by 5 to 500 g/L of fracturing fluid,
increasing the lifetime of the well by reducing a fluid impact on proppant clusters, wherein the impact is reduced by ensuring that a mathematical product of a fluid flow rate (V)(l/sec) and a viscosity (μ) of fracturing fluid (Pa*s) does not exceed 0.003 Pa*l during the hydraulic fracturing process and injection stages.

1 more element

Dependencies are inferred from the claim text.

Method for design of production wells and injection wells

Life of this patent

Method for design of production wells and injection wells

Life of this patent

Abstract

Claims15