CN-121977983-A - Detection device and method for broken particle aggregate

CN121977983ACN 121977983 ACN121977983 ACN 121977983ACN-121977983-A

Abstract

The invention provides a detection device and a detection method for a broken particle aggregate, which relate to the technical field of sand prevention seepage characteristic detection and comprise a detection kettle, shooting equipment and a sand prevention detection component; the sand control detection assembly comprises a first liquid injection pump, a first container, a first weighing device, a second container and a second weighing device, wherein one end of the first liquid injection pump is communicated with the first container, and the other end of the first liquid injection pump is communicated with the top of the detection kettle. The detection kettle adopts an observation plate of annular sapphire glass, and is matched with shooting equipment to record the evolution of a seepage channel, the migration track of particles and the migration process of tracers in real time, so that the sand control layer interception mechanism and the flow field distribution rule are intuitively presented. And calculating the porosity according to a mass method, and obtaining the permeability according to Darcy's law so as to obtain sand prevention efficiency and critical working conditions. The device has the advantages of modularized structure, simple and convenient operation and repeated use, is particularly suitable for performance evaluation of various broken sand control filling materials, and has important significance for optimization of screening and proportioning.

Inventors

NING FULONG
LIU ZHIHUI
LIU ZHICHAO
ZHU RUI
YIN DEJIANG
LUO QIANG
GUO FENG

Assignees

广州南沙地大滨海研究院
中国地质大学（武汉）

Dates

Publication Date: 20260505
Application Date: 20251210

Claims (10)

1. A detection apparatus for an aggregate of broken particles, comprising: The detection kettle is used for accommodating sediment and granular materials to be detected, a detection window is formed in the side wall of the detection kettle, an observation plate is connected to the detection window, and the observation plate is made of a light-transmitting material; The shooting equipment is arranged at one side of the observation plate and used for acquiring image information of the seepage process through the observation plate; Sand control detection subassembly, including first injection pump, first container, first weighing device, second container and second weighing device, the one end of first injection pump pass through the pipeline with first container intercommunication, the other end of first injection pump pass through the pipeline with detect the top intercommunication of cauldron, first weighing device with first container links to each other and is used for detecting the quality change of first container, the second container pass through the pipeline with detect the cauldron bottom intercommunication, the second weighing device with the second container links to each other and is used for detecting the quality change of second container.
2. The apparatus of claim 1, further comprising a porosity testing assembly, wherein the porosity testing assembly comprises a vacuum pump, a buffer tank, a fourth container, and a fourth weighing device, wherein one end of the buffer tank is connected to the bottom of the inspection tank through a pipeline, the other end of the buffer tank is communicated with the vacuum pump through a pipeline, the fourth container is communicated with the bottom of the buffer tank through a pipeline, and the fourth weighing device is connected to the fourth container for detecting mass change of the fourth container.
3. The apparatus of claim 2, further comprising a permeability testing assembly, wherein the permeability testing assembly comprises a third container, a second liquid injection pump, and a third weighing device, wherein one end of the second liquid injection pump is communicated with the third container through a pipeline, and the other end of the second liquid injection pump is communicated with the bottom of the detection kettle through a pipeline.
4. The apparatus for detecting an aggregate of broken particles according to claim 3, wherein a first pressure sensor is connected to a pipe between the first liquid injection pump and the detecting tank, and a second pressure sensor is connected to a pipe between the second liquid injection pump and the detecting tank.
5. The detecting device for a loose particle aggregate according to claim 1, wherein a sand storage tank is arranged between the second container and the detecting kettle, an inlet of the sand storage tank is communicated with the bottom of the detecting kettle, an outlet of the sand storage tank is communicated with the second container, and a control valve is connected to the outlet of the sand storage tank.
6. The detecting device for scattered particle aggregates according to claim 1, wherein the detecting kettle comprises a kettle body, an upper end cover, a lower end cover, a liquid distributor, a supporting screen and a fastening screw, wherein an upper port is formed in the top of the kettle body, a lower port is formed in the bottom of the kettle body, the upper end cover is connected and covered with the upper port, a liquid inlet is formed in the upper end cover, a liquid outlet is formed in the lower end cover, the fastening screw is fixedly connected between the upper end cover and the lower end cover, the liquid distributor and the supporting screen are arranged in the kettle body, the supporting screen is arranged at the bottom of the kettle body, the liquid distributor is arranged at the top of the kettle body, and an inlet of the liquid distributor is communicated with the liquid inlet and is used for uniformly distributing liquid entering the kettle body.
7. The detecting device for a loose particle assembly as claimed in claim 6, wherein the liquid distributor includes an upper water-permeable pressure stone and a lower water-permeable pressure stone, the lower water-permeable pressure stone is fixedly connected to a lower end face of the upper water-permeable pressure stone, the upper water-permeable pressure stone is provided with an inlet and a plurality of radial channels, and the lower water-permeable pressure stone is provided with a plurality of normal channels communicated with the radial channels.
8. A detection method for aggregates of broken particles, applied to the detection device according to any one of claims 1 to 7, characterized by comprising the steps of: S1, sample preparation, namely filling a sediment sample and a to-be-detected particle material into a detection kettle, wherein the sediment sample is arranged above the detection kettle, and the to-be-detected particle material is arranged below the detection kettle; S2, sand prevention test, namely injecting the solution in the first container from the upper part of the detection kettle through a first liquid injection pump, and collecting the effluent from the bottom of the detection kettle through a second container; S3, calculating the sand output, namely collecting the mass change M 1 of the solution in the first container through a first weighing device after the discharged liquid is stable, collecting the mass change M 2 of the discharged liquid in the second container through a second weighing device, calculating the sand output M 3 and the sand output rate M in unit time, , 。
9. A detection method for aggregates of broken particles, applied to the detection device according to any one of claims 3 to 4, characterized by comprising the steps of: S1, sample preparation, namely filling a particle material to be detected into a detection kettle and calculating the sample volume V 1 ; S2, vacuum saturation, namely vacuumizing the detection kettle through a vacuum pump of the porosity testing assembly, enabling the solution in the first container to enter the detection kettle, and controlling the start and stop of the vacuum pump through the liquid outlet state of the bottom of the detection kettle and the image information acquired by the shooting equipment to saturate the particle materials to be detected in the detection kettle; S3, calculating porosity Collecting the liquid discharged from the detection kettle through a fourth container, recording the mass change m 4 of the solution in the first container and the mass change m 5 of the fourth container, and porosity Wherein Is the density of the solution in the first container.
10. The method according to claim 9, wherein after step S2, the following steps are performed: S4, establishing a stable flow, namely driving the solution in the third container to flow from bottom to top at a constant flow rate through a second liquid injection pump Injecting into a detection kettle, respectively detecting a liquid pressure value P 1 at an inlet of the detection kettle and a liquid pressure value P2 at an outlet of the detection kettle, and calculating the pressure difference of an inlet and an outlet , ; S41, calculating the permeability: when the pressure of the inlet and the outlet is different After stabilization, the permeability k is calculated according to darcy's law, L is the height of the detection kettle, A is the sectional area of the granular material to be detected in the detection kettle, Is the viscosity of the solution.

Description

Detection device and method for broken particle aggregate Technical Field The invention relates to the technical field of sand prevention seepage characteristic detection, in particular to a detection device and method for a broken particle aggregate. Background Migration and production of formation sand during oil and gas field development and production of fluids in the subsurface are one of the key problems affecting wellbore stability and recovery efficiency. In order to prevent formation sand from entering the wellbore with the fluid, a sand-packing process is often used, i.e., a layer of particulate material of a certain thickness is packed between the wellbore screen and the formation to form a sand-packing barrier with permeability and interception capability. The performance of the filling layer directly determines the sand prevention effect and the seepage efficiency, and factors such as pore structure, grain size grading, bulk density, surface roughness and the like have obvious influence on the sand prevention capability and the fluid resistance. At present, experimental evaluation on the performance of sand control materials mainly depends on a traditional seepage experimental device or a static screening test. The device is usually closed in structure and single in monitoring means, real-time observation and visual analysis of a sand process are difficult to realize, and meanwhile, the seepage channel evolution process is invisible, so that the experimental repeatability is poor and the data discreteness is high. Disclosure of Invention The invention provides a detection device and method for a broken particle aggregate, which are used for solving the problem that real-time observation and visual analysis of a sand process are difficult to realize in the prior art. The present invention provides a detection device for a broken particle aggregate, comprising: The detection kettle is used for accommodating sediment and granular materials to be detected, a detection window is formed in the side wall of the detection kettle, an observation plate is connected to the detection window, and the observation plate is made of a light-transmitting material; The shooting equipment is arranged at one side of the observation plate and used for acquiring image information of the seepage process through the observation plate; Sand control detection subassembly, including first injection pump, first container, first weighing device, second container and second weighing device, the one end of first injection pump pass through the pipeline with first container intercommunication, the other end of first injection pump pass through the pipeline with detect the top intercommunication of cauldron, first weighing device with first container links to each other and is used for detecting the quality change of first container, the second container pass through the pipeline with detect the cauldron bottom intercommunication, the second weighing device with the second container links to each other and is used for detecting the quality change of second container. Further, still include porosity test assembly, porosity test assembly includes the vacuum pump and buffers the jar, the one end of buffer jar pass through the pipeline connect in detect the cauldron bottom, the other end of buffer jar pass through the pipeline with the vacuum pump is linked together, porosity test assembly still includes fourth container and fourth weighing device, the fourth container pass through the pipeline with buffer the jar bottom is linked together, fourth weighing device connect in the fourth container is used for detecting the quality change of fourth container. Further, the device further comprises a permeability testing assembly, wherein the permeability testing assembly comprises a third container, a second liquid injection pump and a third weighing device, one end of the second liquid injection pump is communicated with the third container through a pipeline, and the other end of the second liquid injection pump is communicated with the bottom of the detection kettle through a pipeline. Further, a first pressure sensor is connected to the pipeline between the first liquid injection pump and the detection kettle, and a second pressure sensor is connected to the pipeline between the second liquid injection pump and the detection kettle. Further, a sand storage tank is arranged between the second container and the detection kettle, an inlet of the sand storage tank is communicated with the bottom of the detection kettle, an outlet of the sand storage tank is communicated with the second container, and a control valve is connected to the outlet of the sand storage tank. Further, detect the cauldron and include the cauldron body, upper end cover, bottom end cover, liquid distributor, support otter board and fastening screw, the last port has been seted up at cauldron body top, the bottom port has been seted up to the bottom of the cauldron