Device and method for keeping particle concentration stable in proppant speed measurement experiment

A technology of particle concentration and proppant, applied in the direction of measuring device, individual particle analysis, particle and settlement analysis, etc., can solve the problem of inaccuracy of flow field test results and achieve the effect of stable concentration

Active Publication Date: 2021-06-29
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it cannot guarantee the continuous stability of the concentration of tracer particles and proppant during the experiment, resulting in inaccurate flow field test results

Method used

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  • Device and method for keeping particle concentration stable in proppant speed measurement experiment
  • Device and method for keeping particle concentration stable in proppant speed measurement experiment
  • Device and method for keeping particle concentration stable in proppant speed measurement experiment

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Embodiment Construction

[0037]The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0039] In the present invention, the terms "first", "second" and the like are used to distinguish similar objects, rather than to describe a specific order or sequence, unless stated otherwise. The terms used should be understood as such; use of the terms "upper", "lower", "left", "right", etc. generally refers to the orientation shown in the drawings, or to the parts themselves in vertical, perpendicular or In terms of the direction of gravity; ...

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Abstract

The invention discloses a device and method for keeping the particle concentration stable in a proppant speed measurement experiment, wherein particles comprise tracer particles and proppant particles. The device comprises a settling tank, a first conveying pump, a first stirring tank, a second conveying pump, a second stirring tank and a third conveying pump which are connected in sequence, wherein the first stirring tank is used for preparing a liquid, the second stirring tank is used for mixing sand, the settling tank comprises a first tank body, a first liquid inlet, a first liquid outlet and a sand discharge port are formed in the first tank body, a filter screen and a liquid up-and-down limiting sensor are arranged in the first tank body, the interior of the first tank body is divided into an upper filtrate cavity and a lower sand setting cavity by the filter screen, the first liquid inlet is formed in the side wall of the lower sand setting cavity, the first liquid outlet is formed in the side wall of the upper filtrate cavity, the sand discharging port is formed in the bottom of the lower sand setting cavity, and the liquid up-down limiting sensor is arranged in the upper filtrate cavity. According to the invention, continuous mixing and circulating pumping of a sand-carrying fluid in a proppant conveying experiment process can be realized, and the stability of the concentration of tracer particles and the proppant used in a PIV test process can also be ensured.

Description

technical field [0001] The invention relates to the technical field of proppant delivery experiment based on PIV test technology in hydraulic fracturing process, in particular to a device and method for maintaining stable particle concentration in proppant velocity test. Background technique [0002] Hydraulic fracturing is to pump fracturing fluid into the formation with a displacement that exceeds the liquid absorption capacity of the formation, generating high pressure that exceeds the fracture pressure of the formation rock, causing cracks in the formation. Continue to inject fracturing fluid to extend the hydraulic fractures; then inject sand-carrying fluid to continue to extend the hydraulic fractures and fill the fractures with proppant. After the pump is stopped, due to the supporting effect of the proppant on the fracture wall, sand-filled fractures with high conductivity are formed in the formation, thereby achieving the purpose of increasing production of oil and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/10B01F7/32B01F15/00B01F15/02G01N15/14B01F27/96
CPCG01N15/14G01N2015/1486B01F27/96B01F33/813B01F33/81B01F33/811B01F35/2112B01F35/714B01F35/717B01F35/71775B01F2101/23
Inventor 郭建春曾先进杨若愚张涛李鸣陈恒灿
Owner SOUTHWEST PETROLEUM UNIV
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