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Uneven placement of proppants in fractures with removable extrametric material fills

A technology of proppant and proppant concentration, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of inconsistent distribution of proppant clusters and difficult position control

Active Publication Date: 2017-05-10
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluids containing proppants are difficult to control their position
This can lead to an inconsistent distribution of proppant clusters, which in turn can lead to excessive fracture closure where proppant is insufficient and restricted flow paths where proppant is excessive

Method used

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  • Uneven placement of proppants in fractures with removable extrametric material fills
  • Uneven placement of proppants in fractures with removable extrametric material fills
  • Uneven placement of proppants in fractures with removable extrametric material fills

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Embodiment Construction

[0038] First, it should be noted that in the development of any such practical embodiment, a great deal must be done in order to achieve the developer's specific goals, which will vary from implementation to implementation, such as compliance with system-related and business-related constraints. implementation-specific decision. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nonetheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0039] The description and examples are presented for the purpose of illustrating embodiments only, and should not be construed as limiting the scope and application of the invention. Although the compositions of the present invention are described herein as comprising particular materials, it should be understood that the composition may alternatively comprise two or more chemically distinct materials. In addition, the composi...

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Abstract

A method of unevenly placing proppant in subsurface fractures is disclosed. The method includes injecting a well treatment fluid including proppant (16) and proppant-spaced packing material (18) through a wellbore (10) into a fracture (20); uneven placement of proppant clumps or islands (22) within the fracture; and removal of fill material (24) to create open channels (26) around the columns (28) for fluids to flow from the formation (24) 14) flows through the fracture (20) to the wellbore (10). The proppant and channeling agents may be separated within the well treatment fluid or during placement in the fracture. The fill material may be soluble particles that initially act as fill material during placement of the proppant in the fracture and then dissolve to leave flow channels between the proppant columns. The well treatment fluid may include extrametric materials to strengthen and incorporate the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.

Description

technical field [0001] Embodiments relate to stimulation of wells penetrating subterranean formations, and more particularly to fracture stimulation of flow through fractures for producing hydrocarbons by injecting proppants into fractures to create regions of low flow resistance. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Various methods are known for fracturing subterranean formations to enhance the production of fluids therefrom. In a typical application, a pressurized fracturing fluid hydraulically creates and propagates fractures. The fracturing fluid carries proppant particles into the propagating fracture. When the fracturing fluid is removed, the fracture does not close completely due to the loss of hydraulic pressure; instead, the fracture is held open by the proppant through the packed proppant, allowing fluid to flow from the forma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/267
CPCC09K8/80E21B43/267
Inventor F·N·利特维涅茨A·V·波格丹S·M·马卡雷切夫-米赫雷夫O·梅德韦杰夫A·佩娜K·M·利亚普诺夫A·V·米赫雷夫T·M·列斯科J·E·布朗D·M·维尔贝格I·V·科萨列夫A·V·梅德韦杰夫J·阿博特A·A·布鲁基姆
Owner PRAD RES & DEV LTD
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