Schlumberger Technology Corporation

Geza Horvath Szabo

Mohan Kanaka Raju Panga

Chad Kraemer

Bernhard Rudolf Lungwitz

Alexey Vladimirovich Alekseev

Konstantin Viktorovich Vidma

Kira Vladimirovna Yudina

Maxim Pavlovich Yutkin

Sergey Sergeevich Skiba

Danil Sergeyevich Pantsurkin

Andrey Vladimirovich Yakovlev

This method is designed to facilitate the well treatment with the possibilities for non-uniform/heterogeneous proppant placement in the extended and branched fractures produced by hydraulic fracturing. The essence of the method is to inject a proppant-bearing gel into the wellbore drilled into a productive formation. The low-viscosity fracturing fluid is injected into the wellbore together with the gel fluid (simultaneously or in turns). The method also provides for the injection of gas into the proppant-bearing gel and/or the low-viscosity fluid. The gas can be injected upstream of the junction point, at the junction point, or downstream of the junction point of the flows of the proppant-bearing gel and the low-viscosity fluid. The method further provides for the division of the gel fluid into the separate agglomerates with their subsequent injection into the fractures in the subterranean formation to form the proppant structures in the fracture.

Method of treating a well with the formation of proppant structures (variants)

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.

Method for design of production wells and injection wells

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Edmonton, Canada

Geza Horvath Szabo