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Horizontal well sectioning multi-cluster perforating and fracturing optimizing method and device

An optimization method and technology for horizontal wells, applied in design optimization/simulation, earthwork drilling and production, wellbore/well components, etc., can solve problems such as inability to obtain application effects and inability to reflect the dynamic process of fractures, and reduce oil and gas migration. The effect of moving distance and increasing output

Active Publication Date: 2017-06-27
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, a major disadvantage of this method is that each cluster of fractures can be effectively extended, which cannot reflect the dynamic process of fractures from the beginning of construction to the end of construction. However, on-site fracturing construction and production show that the same section of multi-cluster perforation fracturing When , only part of the cluster cracks can be effectively extended, and the application effect cannot be obtained.

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  • Horizontal well sectioning multi-cluster perforating and fracturing optimizing method and device

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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0016] It should be noted that like numerals and let...

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Abstract

The embodiment of the invention provides a horizontal well sectioning multi-cluster perforating and fracturing optimizing method and device and relates to the field of oil and gas field capacity expansion revamping. The method comprises the steps that an inter-cluster flow dynamic distribution model is built, and fluid pressure in cracks is calculated; a stress interference model is built; in terms of the stress interference model and the inter-cluster flow dynamic distribution model, a multi-cluster fracturing crack dynamic extension model is built; and a multi-crack simultaneous expanding step length model is built, and construction parameters meeting the multi-cluster fracturing crack dynamic extension model are substituted into the multi-crack simultaneous expanding step length model to obtain optimal construction parameters. By utilizing the multi-cluster fracturing crack dynamic extension model, the construction parameters according with conditions can be selected, then by utilizing the multi-crack simultaneous expanding step length model, the expanding step length and the angle are calculated, and the optimal construction parameters are selected. The defect that in the prior art, during constructing, it is considered that all clusters of cracks can extend effectively is overcome, and the parameters such as the cluster spacing and the perforating mode can further be selected optimally.

Description

technical field [0001] The invention relates to the field of production stimulation and reformation of oil and gas fields, in particular to a method and device for optimizing segmental multi-cluster perforation fracturing of a horizontal well. Background technique [0002] Horizontal well segmented multi-cluster perforation fracturing refers to the use of packers to divide the horizontal section of the horizontal well into several small sections at a certain distance due to the large length of the horizontal section during horizontal well fracturing. Multiple clusters of perforation fracturing are carried out at a certain interval in a section, and the distance between two adjacent perforation clusters is called the cluster spacing. The staged multi-cluster perforation fracturing of horizontal wells is generally optimized by multi-cluster perforation fracturing in a single stage, and then extended to multiple stages. The principle of multi-cluster perforation fracturing in ...

Claims

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Application Information

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IPC IPC(8): E21B43/11E21B43/26G06F17/50
CPCE21B41/0092E21B43/11E21B43/26G06F30/20G06F2119/06
Inventor 杨兆中易良平李小刚孙志宇刘长印
Owner CHINA PETROLEUM & CHEM CORP
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