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Experimental device for simulating deflection fracturing of fracture and application thereof

An experimental device, a technology for simulating fractures, applied in the direction of wellbore/well components, measurement, production fluid, etc.

Pending Publication Date: 2017-10-24
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of necessary experimental devices for the simulation research of temporary plugging and steering fracturing in fractures in China

Method used

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  • Experimental device for simulating deflection fracturing of fracture and application thereof
  • Experimental device for simulating deflection fracturing of fracture and application thereof
  • Experimental device for simulating deflection fracturing of fracture and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An experimental device for simulating fracture turning to fracturing, including a pump 5 connected through a pipeline system 6, an intermediate container part 7, and fracturing experimental equipment 8; a simulated wellbore 10 and perforation 11 are arranged in the fracturing experimental equipment 8 , the pump 5 injects fracturing fluid or temporary plugging agent into the fracturing experimental equipment 8 through the intermediate container part 7 and the perforation 11 of the simulated wellbore.

[0045] The pump 5 is a plunger pump with a pressure resistance of 5-10 MPa and a displacement of 0-300 L / h.

[0046] Described pipeline system 6 comprises pipeline, and the internal diameter of described pipeline is 2-10mm; Preferably, described pipeline system also comprises pressure gauge, flowmeter and distribution box, and described pressure gauge and flowmeter are electronic pressure gauge and An electronic flowmeter, and the distribution box is used for: when the pre...

Embodiment 2

[0051] An experimental device for simulating fracture turning to fracturing as described in Example 1, the difference is that the simulated wellbore 10 includes an inner cylinder 10-1 arranged in the sealed cavity and connected to the high-pressure joint 12 and The outer cylinder 10-2 between the fracturing test equipment 8, the inner cylinder 10-1 and the outer cylinder 10-2 are connected by threads.

Embodiment 3

[0053] An experimental device for simulating fracture turning to fracturing as described in Example 1, the difference is that the inner cylinder 10-1 and the outer cylinder 10-2 are respectively connected to the lower cover 9 of the sealed cavity through threads.

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Abstract

An experimental device for simulating deflection fracturing of a fracture comprises a pump, an intermediate vessel portion and a fracturing experimental device connected through a pipeline system; and a simulated wellbore and perforations are arranged in the fracturing experimental device, and fracturing fluid or a temporary plugging agent is injected into the fracturing experimental device by the pump through the intermediate vessel portion and the perforations of the simulated wellbore. Researches on inner fracture deflection experiments and setting laws of the temporary plugging agent are few, and a necessary indoor experimental device is not available. Based on the relative theory, through combination with actual conditions of on-site construction and underground reservoirs, and on the basis of the similarity criterion, a deflection fracturing experimental device of the fracture is designed and produced, and the experimental device can conduct the experimental researches on the performance evaluation of the temporary plugging agents with different types, the setting laws of the temporary plugging agents, the fracture steering rules and the like. The experimental device can conduct the experimental researches on the influences on inner fracture deflection of the temporary plugging agents with different types and the setting modes of the temporary plugging agents and the research results have a certain reference to the on-site construction.

Description

technical field [0001] The invention relates to an experimental device for simulating fracture turning and fracturing and its application, belonging to the technical field of oil and gas field development. Background technique [0002] With the continuous development of society, the demand for oil in the world is increasing day by day, and the development of most integrated oil fields has entered the late stage of high water cut. Deep, ultra-deep and unconventional oil and gas resources have increasingly become new areas for exploration and development. The oil resources of my country's low-permeability oil fields account for 30% of the country's total oil resources, and the development potential is huge. Hydraulic fracturing is a technology that achieves the effect of increasing production by forming fractures with high conductivity in the formation. It is suitable for low-permeability oil and gas reservoirs. With the long-term development and production of fracturing wells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B33/13E21B43/11E21B47/00
CPCE21B33/13E21B43/11E21B43/261E21B47/00
Inventor 温庆志张东晓牟绍艳雷刚
Owner PEKING UNIV
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