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Shale bedding inner supporting agent transportation simulating device and evaluation method

A simulation device and evaluation method technology, applied in the fields of earthwork drilling, electrical digital data processing, special data processing applications, etc. Realize quantitative evaluation of bedding fracture support effect after fracturing, automatic quantitative mixing of fracturing sand-carrying fluid and other problems, so as to achieve the effect of accurate test, easy observation and guaranteed stability

Pending Publication Date: 2018-02-16
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) There is no published simulation experiment device for proppant horizontal migration in shale bedding;
[0005] (2) The horizontal and vertical migration of proppant between multi-layer shale beddings cannot be simulated;
[0006] (3) Automatic quantitative mixing of fracturing sand-carrying fluid cannot be realized;
[0007] (4) Quantitative evaluation of support effect of bedding fractures after compression cannot be realized

Method used

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  • Shale bedding inner supporting agent transportation simulating device and evaluation method
  • Shale bedding inner supporting agent transportation simulating device and evaluation method

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Effect test

Embodiment 1

[0043] A device for simulating proppant migration in shale bedding, including a continuous liquid dosing system, an automatic sand mixing system, and a control and data processing system, and also includes a flow simulation system 8 in bedding fractures, a continuous liquid dosing system and an automatic sand mixing system connection, the automatic sand mixing system is connected with the flow simulation system in the bedding fracture, the flow simulation system 8 in the bedding fracture is connected with the control and data processing system; the flow simulation system 8 in the bedding fracture includes the first simulated wellbore 15, the first Second simulated wellbore 16, first horizontal bedding fracture 17, second horizontal bedding fracture 18, 0° vertical fracture 19, 45° vertical fracture 20, 90° vertical fracture 21, third horizontal bedding fracture 22, third simulation The wellbore 23, the fourth simulated wellbore 24 and the fifth simulated wellbore 25, the first ...

Embodiment 2

[0066] (1) The composition and connection mode of the experimental device:

[0067] Such as figure 1 and 2 As shown, it is the proppant migration simulation device in shale bedding of the present invention, which mainly includes: continuous liquid distribution system (three kinds of liquid system liquid distribution tank 1), automatic sand mixing system (liquid supply pump 3, sand mixing tank 4 , sand-carrying liquid pump 5 and automatic sand-adding device 11), sand-carrying liquid pump 5 and circulating liquid pump 10, flow simulation system 8 in bedding seams, control and data processing system (pressure sensor 12, video acquisition device 13 and control and data processor 14), filtrate tank 9 and other components. The liquid distribution tank 1 of the three liquid systems realizes the stirring and configuration of various fracturing fluid systems, and its outlet is connected with three solenoid valves 2 to realize the automatic switching of the liquid during the experimen...

Embodiment 3

[0078] The flow simulation system in bedding fractures is used to realize the simulation of proppant flow in bedding fractures at different vertical distances from the injection wellbore and the length of horizontal bedding fractures, and realize the influence of bedding fracture length on proppant flow simulation;

[0079] By adjusting the sanding frequency of the automatic sanding device, the addition amount Q of different types of proppants can be realized p Control, adjust (3) Liquid supply speed Q of liquid supply pump 1 and (5) the liquid supply speed Q of the sand-carrying liquid pump 2 The relationship between control (4) the volume V in the sand mixing tank, according to Q p , Q1, Q2 and the relationship between V, to establish the experimental sand concentration C p Representation relationship: Cp~F(Q p , Q 1 , Q 2 ,V);

[0080] Control and data processing system, the system includes: control and data processor can realize automatic collection of flow, pressure...

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Abstract

The invention discloses a shale bedding inner supporting agent transportation simulating device and an evaluation method. The shale bedding inner supporting agent transportation simulating device comprises a continuous liquid mixing system, an automatic sand mulling system, a control and data processing system and a bedding seam internal flow simulating system. The continuous liquid mixing systemis connected with the automatic sand mulling system, the automatic sand mulling system is connected with the bedding seam internal flow simulating system, and the bedding seam internal flow simulatingsystem is connected with the control and data processing system. According to the shale bedding inner supporting agent transportation simulating device and the evaluation method, slugging type sand adding, continuous sand adding and various liquid system mixed fracturing pump injection procedure simulation on a fracturing site can be achieved, quantitative evaluation of the supporting effects ofdifferent cracks is achieved, and the theoretical basis and experimental support are provided for on-site pump injection procedure simulation optimization and fracturing parameter quantitative evaluation.

Description

technical field [0001] The invention relates to a simulation device and an evaluation method using the simulation device, in particular to a proppant migration simulation device in shale bedding and an evaluation method. Background technique [0002] The bedding of shale reservoirs is relatively well developed. Indoor outcrop fracturing simulation experiments and on-site fracturing fracture monitoring show that hydraulic fracturing can easily open horizontal bedding, especially when the vertical stress and the minimum horizontal principal stress are small, horizontal fractures are more likely to form Mainly reform cracks. The opening of horizontal bedding fractures restricts the vertical extension of hydraulic fractures and reduces the degree of vertical reservoir production. At the same time, proppant in horizontal bedding fractures is more likely to accumulate near the wellbore, and the support of distal fractures is reduced, which affects the effect of fracturing stimulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/267E21B49/00G06F17/50
CPCE21B43/267E21B49/00G06F30/20G06F2119/06
Inventor 李彦超尹丛彬钱斌王素兵袁灿明段明峰
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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