Heterogeneous proppant placement in a fracture with removable extrametrical material fill
A proppant and fracture technology, applied in drilling composition, production fluid, wellbore/well components, etc., can solve problems such as inconsistent distribution of proppant clusters
Inactive Publication Date: 2014-05-07
PRAD RES & DEV LTD
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Problems solved by technology
This deposition can lead to an inconsistent distribution of proppant clusters, which in turn can lead to excessive fracture closure where proppant is deficient and restricted flow paths where proppant is excessive
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[0054] 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.
[0055] The description and examples are presented merely to illustrate some of the many embodiments of the disclosure and should not be construed as limiting the scope and application of the disclosure. Although compositions of the present disclosure are described herein as comprising particular materials, it is understood that the composition may alternatively comprise two or more chemically distinct materials. In addition, th...
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Abstract
A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) and proppant-spacing filler material (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the material (24), and removing the filler material (24) to form open channels (26) around the pillars (28). The filler material can be dissolvable particles, initially acting as a consolidator during placement of the proppant in the fracture, and later dissolving to leave flow channels between the proppant pillars. The well treatment fluid can include extrametrical materials to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.
Description
Background technique [0001] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0002] 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 formation through the proppant pack to the production wellbore. [0003] The success of fracture treatment can depend on the ability of the desired fluids to flow from the formation through the proppant pack. In other words, the proppant pack or matrix must have high permeability relative ...
Claims
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IPC IPC(8): E21B43/26
CPCC09K8/68C09K8/70C09K8/72C09K8/80C09K8/805C09K2208/08C09K8/665E21B43/267E21B43/26C09K8/62
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J·E·布朗
Owner PRAD RES & DEV LTD