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Plugging capacity test experimental device for well drilling and fracturing and test method

A capability testing and experimental device technology, which can be used in measuring devices, using liquid/vacuum for liquid tightness measurement, and measuring the acceleration and deceleration rates of fluids. problems, to achieve high reliability

Pending Publication Date: 2021-11-12
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few experimental devices used to test the plugging performance, and the existing experimental devices generally have a large difference between the experimental conditions and the actual formation conditions, the temperature range of the simulated formation is small, and the simulation system does not meet the diversification characteristics of formation fractures. The single form of the temporary plugging agent / plugging agent, or although the actual formation conditions can be simulated to the greatest extent, the device has disadvantages such as high production cost, high experiment cost, large floor area, and complicated operation, which is not conducive to the development of relevant Research

Method used

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  • Plugging capacity test experimental device for well drilling and fracturing and test method
  • Plugging capacity test experimental device for well drilling and fracturing and test method
  • Plugging capacity test experimental device for well drilling and fracturing and test method

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Embodiment 1

[0037] Reference attached Figure 1-2 It can be seen that the present invention provides an experimental device for testing plugging capacity for drilling and fracturing, including: an injection system 1 , a simulation system 2 , a temperature control system 3 , a leakage system 4 , a metering system 5 , and a data acquisition system 6 .

[0038] Injection system 1 is composed of large displacement pump, piston container, gas pressure regulating system and other parts. As a power system, the large-displacement pump is mainly used to inject fluids in different flow ranges and pressurize the analog module system; the gas pressure regulating system uses nitrogen to pressurize, and the experimental pressure is controlled by the computer control system, and can also be controlled by manual input. Pressure, the inlet and outlet read the pressure value through the pressure gauge, the large displacement pump can pressurize up to 50MPa, according to the ratio of the experimental equipm...

Embodiment 2

[0046] A kind of drilling and fracturing plugging capacity test experimental device described in embodiment 1 also includes a computer automatic control system, the computer can pressurize the pressure and pressure changes of the injection system to the simulation system, and the temperature control system can heat the simulation mold. Control the temperature and temperature changes, and at the same time, it can automatically collect and monitor all pressure, temperature, flow, volume and quality of leakage fluid, and control the operation of the pump.

[0047] The computer software runs under windows 2000 / xp environment, and uses VB programming. The working process of the instrument is displayed on the interface, which can realize man-machine dialogue. After the operator sets the parameters, it can be unattended. The computer can automatically collect all the pressure, temperature and flow, and control the operation of the pump. The data collected by the computer can be proce...

Embodiment 3

[0049] A kind of drilling and fracturing plugging ability testing experimental device described in embodiment 1 and 2 is characterized in that the valves, pipelines and pipe fittings all adopt DW14 inner ferrule type high-pressure valves and pipe fittings, with a pressure resistance of 50MPa, and the material is 316L, all pressure vessel outlet lines are 6mm hard lines. The forward and reverse displacement process is designed, and the forward and reverse displacement test can be carried out.

[0050] In the simulation system, the plugging special core holder, the plugging ball orifice plate, and the extrusion crushing die are all made of 316L. The devices are not easy to be damaged and deformed, and at the same time, they are resistant to temperature and pressure.

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Abstract

The invention provides a plugging capacity test experimental device for well drilling and fracturing and a test method, the plugging capacity test experimental device comprises an injection system, a simulation system, a temperature control system, a leakage system, a metering system and a data acquisition system, and the plugging capacity test experimental device can acquire parameters such as pressure, temperature and flow in real time and perform operation processing on the data. The device provided by the invention adopts an advanced dynamic sealing technology and a mechanical transmission and data sensing technology, integrates various high-temperature and high-pressure testing functions, and can perform various performance evaluation experiments of the temporary plugging agent under high-temperature and high-pressure dynamic conditions. Meanwhile, the device is provided with various simulation leakage layer test modules, a proper test module can be selected for testing according to the characteristics of the underground leakage layer, the device has the advantages of digital display monitoring of test temperature, pressure and time, high sensitivity, good repeatability, stable and reliable operation, and convenience and safety in operation, and a new test evaluation means is provided for related scientific research and production.

Description

technical field [0001] The invention relates to an experimental device and a testing method for plugging capacity testing for drilling and fracturing, and belongs to the technical field of oil and gas field development. Background technique [0002] As the development of oil and gas fields enters the middle and later stages, high-permeability reservoirs are almost exhausted, and people begin to explore the high-efficiency development of low-permeability oil and gas fields. During the fracturing process of low-permeability oil and gas fields, the volume of some intervals is too small or the complexity of the fracture network is not enough, resulting in unsatisfactory stimulation results. The resulting segment loss phenomenon, increasing the complexity of the seam network and transforming the volume. Temporary plugging diversion fracturing technology has become a new method and new direction for increasing production and tapping potential in the late stage of low-permeability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01M3/26
CPCG01N33/00G01M3/26
Inventor 王冰黄银闫秀郝玉芬胡光
Owner 中石化石油工程技术服务有限公司
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