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Observable experiment equipment for simulating propping agent migration in complex fracture network

An experimental device and proppant technology, applied in wellbore/well components, production fluid, earthwork drilling and production, etc., can solve the problems that cannot be simulated, the influence of proppant migration flow cannot be ignored, and the influence of proppant migration cannot be simulated, etc. problem, to achieve the effect of reliable principle, accurate test and easy observation

Active Publication Date: 2015-04-22
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The influence of natural fractures on proppant migration in fractures cannot be simulated;
[0005] (2) The influence of reservoir bedding fractures on proppant migration in fractures cannot be simulated;
[0006] (3) The migration law of proppant in the fracture cannot be simulated during cluster perforation fracturing;
[0007] (4) In the "factory" fracturing process, the influence of interstage interference between adjacent wells on the flow of proppant migration cannot be ignored. Without simulating this process, it is impossible to truly reflect the flow of proppant migration in multi-well fracturing. reality

Method used

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  • Observable experiment equipment for simulating propping agent migration in complex fracture network
  • Observable experiment equipment for simulating propping agent migration in complex fracture network
  • Observable experiment equipment for simulating propping agent migration in complex fracture network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A visual experimental device for simulating the migration of proppant in a complex fracture network, including a liquid supply and sand mixing system, a pump injection system, a pipeline transportation system, a visual fracture network system, a circulating fluid processing system, a data acquisition system and a control system, The outlet of the liquid supply and sand mixing system is connected to the inlet of the pumping system through the pipeline delivery system, the outlet of the pumping system is connected to the inlet of the visualized fracture network system through the pipeline delivery system, and the outlet of the visualized fracture network system is connected to the pipeline delivery system It is connected to the inlet of the circulating fluid treatment system, the outlet of the circulating fluid treatment system is connected to the inlet of the pumping system through the pipeline delivery system, and the data acquisition system for collecting data is connect...

Embodiment 2

[0042] A proppant migration simulation experiment device in a complex fracture network, mainly composed of a liquid supply and sand mixing system, a pump injection system, a pipeline transportation system, a visualized fracture network system, a data acquisition system, a control system and a circulating fluid processing system. Among them, the visualized fracture network system consists of 2 vertical main fractures, 4 connecting fractures (2 vertical natural fractures, 2 horizontal bedding fractures), 4 simulated inlets and outlets and multiple fracture connection parts, forming a closed flow as a whole Space, the characteristics of each accessory are as follows:

[0043] 1. By reversing the positions of the first simulation inlet 21 and the first simulation outlet 23, respectively realize the simulation of proppant flow between multiple well intervals and single well clusters;

[0044] 2. The connection angles between two vertical natural fractures 19 and 20 and two main fra...

Embodiment 3

[0051] Such as figure 1 As shown, the visual experimental device for simulating proppant migration in complex fracture network mainly includes liquid supply and sand mixing system (sand mixing tank 1, auxiliary liquid tank 2), pump injection system (injection pump 4), pipeline delivery system (solenoid valve 3, inlet valve 6, vent valve 9, outlet valve 10, circulating fluid valve 12, pipeline), visualized fracture network system (visual simulation window 8), circulating fluid processing system (circulating fluid processing device 11) data acquisition system (flow meter 5, digital display pressure gauge 7, high-frequency camera 13), control system (computer 14); the outlet of the sand mixing tank 1 and the auxiliary liquid tank 2 are connected to the inlet of the injection pump 4, and the outlet of the injection pump 4 is connected to the The inlet of the visual simulation window 8 is connected, the outlet of the visual simulation window 8 is connected with the inlet of the cir...

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Abstract

The invention discloses observable experiment equipment for simulating propping agent migration in a complex fracture network. The observable experiment equipment comprises a fluid supply and sand mixing system, a pump casting system, a pipeline conveyance system, an observable fracture network system, a circulating fluid processing system, a data acquisition system and a control system, wherein the outlet of the fluid supply and sand mixing system is connected with the inlet of the pump casting system through the pipeline conveyance system, the outlet of the pump casting system is connected with the inlet of the observable fracture network system through the pipeline conveyance system, the outlet of the observable fracture network system is connected with the inlet of the circulating fluid processing system through the pipeline conveyance system, and the outlet of the circulating fluid processing system is connected with the inlet of the pump casting system through the pipeline conveyance system so that the data acquisition system for acquiring data is connected with the control system. According to the observable experiment equipment, the propping agent migration rule in the complex fracture network can be truly simulated so that the flow mechanism of the sliminess water fracturing propping agent is explored.

Description

technical field [0001] The invention relates to a simulation device, in particular to a visualization experiment device for simulating the migration of proppant in a complex fracture network during hydraulic fracturing. Background technique [0002] Shale reservoirs have low porosity, low permeability, bedding, and natural micro-fractures, so it is difficult to achieve efficient development by conventional mining methods. Multi-stage fracturing technology for horizontal wells can form complex fracture networks, increase the volume of reservoir stimulation, and greatly improve gas well production and gas reservoir recovery. Especially the slick water fracturing technology for shale reservoirs can And other characteristics, can more effectively improve the complexity of the hydraulic fracture network and increase the reservoir stimulated volume (SRV). However, the complex fracture network and the low sand-carrying capacity of slick water have a huge impact on the effective su...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B43/267
CPCE21B43/267E21B49/00G09B9/00
Inventor 尹丛彬李彦超王素兵段明锋宼双锋李莹朱炬辉陈锐
Owner BC P INC CHINA NAT PETROLEUM CORP
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