Imbibition device for performing spontaneous imbibition on-line monitoring in combination with nuclear magnetic resonance technology

A technology of spontaneous imbibition and nuclear magnetic resonance, which is used in the detection of electron magnetic resonance/nuclear magnetic resonance, and electrical/magnetic detection for logging records. and other problems to achieve the effect of optimizing the experimental process and reducing the error of the experimental results.

Pending Publication Date: 2020-06-23
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Claims
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Problems solved by technology

Due to the sensitivity of nuclear magnetic resonance equipment and the complexity of experimental operations, the of...

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  • Imbibition device for performing spontaneous imbibition on-line monitoring in combination with nuclear magnetic resonance technology
  • Imbibition device for performing spontaneous imbibition on-line monitoring in combination with nuclear magnetic resonance technology

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Embodiment Construction

[0019] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0020] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0021] like figure 1 As shown, according to the preferred embodiment of the present invention, the specific structure of the imbibition device combined with nuclear magnetic resonance technology for online monitoring of spontaneous imbibition includes: a low-field nuclear magnetic resonance instrument 1, a non-magnetic imbibition assembly, a Martens bottle assembly and a computer control system . Among them, the non-magne...

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Abstract

The invention discloses an imbibition device for spontaneous imbibition on-line monitoring in combination with a nuclear magnetic resonance technology. The device comprises a low-field nuclear magnetic resonance instrument; a non-magnetic imbibition assembly which comprises an imbibition cavity fixer, a non-magnetic imbibition cavity and a liquid level sensor, and the non-magnetic imbibition cavity is in threaded connection with the imbibition cavity fixer through a screw rod, is arranged in the low-field nuclear magnetic resonance instrument and is provided with the liquid level sensor and anelectric valve; a non-magnetic metal net is arranged in the non-magnetic imbibition cavity; a Markov bottle assembly which comprises a Markov bottle and an iron stand, and the Markov bottle is connected with the electric valve through a non-magnetic pipeline; and a computer control system which is in control connection with the low-field nuclear magnetic resonance spectrometer, the liquid level sensor and the electric valve and is connected with a nuclear magnetic spectrometer. The imbibition device can continuously obtain nuclear magnetism experiment data in the spontaneous imbibition process in real time in an online mode, reveals the migration characteristics of fluid in a rock core in the spontaneous imbibition process, optimizes the experiment process, and reduces experiment result errors.

Description

technical field [0001] The invention relates to the technical field of exploration and research of unconventional natural gas reservoirs, in particular to a percolation device for on-line monitoring of spontaneous percolation combined with nuclear magnetic resonance technology. Background technique [0002] With the increasing scale of exploration and development of unconventional natural gas resources, the research on unconventional natural gas reservoirs such as coalbed methane, tight sandstone gas and shale gas is gradually in-depth. Low-porosity and low-permeability tight reservoirs represented by shale must undergo large-scale hydraulic fracturing before they can be put into production. Due to the strong capillary pressure during the fracturing operation, a large amount of fracturing fluid enters the reservoir matrix and internal fracture network through imbibition. The flowback of fracturing fluid is crucial to the commissioning of shale gas wells. Field construction ...

Claims

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Application Information

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IPC IPC(8): G01V3/14G01V3/32
CPCG01V3/14G01V3/32
Inventor 姚艳斌刘永常艳海郑司建翟成
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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