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Bubble trajectory method and device for evaluating dynamic sand suspension ability of fracturing fluid

A technology for suspending sand and fracturing fluid, which is applied in the field of bubble trajectory method and device, and can solve the problems of complicated operation process, time-consuming and labor-intensive, etc.

Active Publication Date: 2021-08-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of converting video recordings into sand sedimentation trajectories by such methods is time-consuming and labor-intensive, and the sand grains settled in the cracks also need to be cleaned, and the operation process is relatively complicated

Method used

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  • Bubble trajectory method and device for evaluating dynamic sand suspension ability of fracturing fluid
  • Bubble trajectory method and device for evaluating dynamic sand suspension ability of fracturing fluid
  • Bubble trajectory method and device for evaluating dynamic sand suspension ability of fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067]The buoyancy heights of the bubble trajectory lines are compared under the condition of the same translation distance. Shear rate 170s -1 Fracturing fluid A and B fracturing fluid with hourly viscosities of 0.033Pa·s and 0.105Pa·s flow in fractures with a width of 5mm, a height of 100mm and a length of 3000mm, and the volume flow rate is 0.00013m 3 / s, the pressure is 0.3MPa, the temperature is 23°C, the bubble strings with a diameter of 1.5mm are continuously released in the fracturing fluid A and B respectively, and the bubble trajectories a and b when the two fracturing fluids flow are taken, Take a section of trajectory a1 on the captured bubble trajectory a, take a section of trajectory b1 on the captured bubble trajectory b, and merge trajectory a1 and trajectory b1 into one picture, as shown image 3 As shown, the horizontal coordinates of the start points of a1 and b1 are the same, both are 8mm, and the horizontal coordinates of the end points of a1 and b1 are a...

Embodiment 2

[0069] Comparing the translation distance of the bubble trajectory under the same buoyancy height condition. Shear rate 170s -1 Fracturing fluid A and B fracturing fluid with hourly viscosities of 0.033Pa·s and 0.105Pa·s flow in fractures with a width of 5mm, a height of 100mm and a length of 3000mm, and the volume flow rate is 0.00013m 3 / s, the pressure is 0.3MPa, the temperature is 23°C, the bubble strings with a diameter of 1.5mm are continuously released in the fracturing fluid A and B respectively, and the bubble trajectories a and b when the two fracturing fluids flow are taken, Take a section of trajectory a2 on the captured bubble trajectory a, take a section of trajectory b2 on the captured bubble trajectory b, and merge trajectory a2 and trajectory b2 into one picture, as shown Figure 4 As shown, the vertical coordinates of the starting points of a2 and b2 are the same, both are 0.9mm, and the vertical coordinates of the end points of a2 and b2 are also the same, ...

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Abstract

The invention relates to a bubble trajectory method and device for evaluating the dynamic sand suspension ability of fracturing fluid, including a bubble generation part, a bubble trajectory test part, and a gas-liquid separation part; the bubble generation part includes a gas source and a bubble generator; the bubble trajectory test The part includes a visual crack simulation test section, a flow meter, a temperature sensor, a pressure sensor, and coordinate grid lines, and the coordinate grid lines are located on one side of the visual crack simulation test section; the gas-liquid separation part includes a gas-liquid separator; The fracturing fluid in the separator flows in the visual fracture simulation test section after being driven by the pump, and the bubble generator releases the bubble string from the bottom of the visual fracture simulation test section to form a bubble trajectory under known pressure, temperature and flow conditions. The invention avoids complex operations such as adding sand grains and cleaning sand grains, and the method is intuitive, simple and efficient.

Description

technical field [0001] The invention relates to a bubble trajectory method and a device for evaluating the dynamic sand suspension ability of fracturing fluid. Background technique [0002] Hydraulic fracturing is an important technology for oil and gas well stimulation. The sand or ceramsite carried by the fracturing fluid is also called a proppant. The fractures formed in the formation by hydraulic fracturing can only be maintained by the support of the proppant, so that oil and gas can seep more easily from the fractures and achieve the goal of increasing production. The fracturing fluid with strong sand-suspending ability is beneficial to the reasonable distribution of proppant in fractures, and evaluating the sand-suspending ability of fracturing fluid is of great significance to optimize the hydraulic fracturing process. [0003] The fracturing fluid has the characteristics of shear-thinning non-Newtonian fluid, and its dynamic sand-suspending ability is obviously dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/85
CPCG01N21/85G01N2021/8405
Inventor 刘磊邬学利
Owner XI AN JIAOTONG UNIV