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An Experimental Method for the Conductivity of Fracturing Fractures

A technology of conductivity and pressure, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., and can solve problems such as different fracture conductivity

Active Publication Date: 2020-10-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the fracture conductivity of different proppants under different sanding concentrations and different closure pressures is generally different, there are certain limitations in the simulation experiment methods in the prior art

Method used

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  • An Experimental Method for the Conductivity of Fracturing Fractures
  • An Experimental Method for the Conductivity of Fracturing Fractures
  • An Experimental Method for the Conductivity of Fracturing Fractures

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Embodiment Construction

[0032] The implementation of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, so as to fully understand how the present invention applies technical means to solve technical problems and achieve corresponding technical effects and implement them accordingly. The embodiments of the application and the features in the embodiments can be combined with each other under the premise of no conflict, and the technical solutions formed are all within the protection scope of the present invention.

[0033] The present invention provides an experimental method for testing the hydraulic conductivity of proppant-filled hydraulic fracturing fractures in which the fracture width and sanding concentration are inconsistent along the fracture length direction. figure 1 The flow chart shown is explained in detail.

[0034] Such as figure 1 As shown, the method includes:

[0035] In step S110, a simulation experiment is performed based...

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Abstract

The invention discloses an experiment method for the flow-guiding capacity of a fracturing crack. The experiment method comprises the steps that a simulation experiment is conducted based on the pressure and temperature of an actual reservoir and the injection situation of a propping agent so as to determine the corresponding relation between the width and the length of the propping crack; the injection amount of the propping agent and the thickness of a rock plate in the length direction of the propping crack are calculated through the corresponding relation; and an experiment rock plate is manufactured according to the thickness of the rock plate, and the flow-guiding capacity is tested through the experiment rock plate and the calculated injection amount of the propping agent. Accordingto the experiment method, testing of the flow-guiding capacity under the conditions of rough wall surfaces with the variable sizes, and different sand-laying concentrations can be achieved, the fracturing effect can be evaluated effectively, and thus fracturing design and construction are conducted in a targeted mode.

Description

Technical field [0001] The invention belongs to the field of oil and gas field development, and in particular relates to an experimental method for fracturing fracture conductivity. Background technique [0002] The conductivity of fracturing fractures is a key indicator for evaluating the effect of hydraulic fracturing. The experimental technology of proppant conductivity testing is an important technique for simulating and evaluating the effect of proppant filling fractures. As the main factors affecting fracture conductivity in this experimental technique, research based on proppant types, rock properties, fracture morphology, etc. has received more and more attention. [0003] In the prior art, a variety of experimental evaluation techniques for proppant conductivity combining different reservoir lithologies and specific characteristics have been proposed. In summary, work has been carried out mainly on different lithologies and influencing factors. For example, in a simulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B43/267
CPCE21B43/267E21B49/00
Inventor 贺甲元苏建政张汝生李凤霞刘长印黄志文杨科峰
Owner CHINA PETROLEUM & CHEM CORP
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