Visual experimental device for simulating dynamic sand blocking rules of gravel layer
An experimental device, a technology for simulating formation sand, which is applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc. It can solve the problems of inability to visualize the overall experiment and specify the amount of blocked sand, and reduce the cost of experiments. , The effect of easy material and low system cost
Active Publication Date: 2019-04-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When carrying out the sand control experimental research of graded gravel packing, the visualization of the overall experiment and the concrete amount of plugging sand cannot be achieved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment example
[0044] According to the similarity criterion, the geometric magnification of the simulation experiment is 6 times. Taking the formation sand with a median particle size of 100 mesh (0.149mm) as an example, the median particle size of the simulated sand after amplification is about 0.9mm, and the quartz sand with enlarged particle size is selected. , the median particle size after compounding is 0.85mm; in order to achieve the goal of visualization of the simulation experiment, special glass beads with a particle size of 5mm were selected to simulate filling gravel.
[0045] (1) Clean the visible gravel-packed sand control pipe, and place a metal gauze inside the outlet pipe cap to prevent the glass beads at the end face from being discharged at the outlet and affect the measurement results.
[0046] (2) Block the inlet end of the sand filling pipe, fill one side with simulated formation sand with a median particle size of 0.85 mm, and then compact the sand sample after filling ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Caliber | aaaaa | aaaaa |
| Length | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a visual experimental device for simulating dynamic sand blocking rules of a gravel layer and a testing method. The device comprises an injection system, a seepage displacement model system and an outlet metering system. The injection system is used for providing stable displacement power for an experiment; the seepage displacement model system is used for observing rules,such as sedimentation, bridging, blocking and front edge distribution form, of stratum sands in the gravel layer during an experimental process; the outlet metering system is used for metering experimental sand production rate and evaluating sand blocking effect. The invention provides a visual experimental method of migration of the stratum sands in the gravel layer and a proportionally magnifying method of real stratum sands and gravels, and can intuitively show the distribution rules and blocking degree of the stratum sands in the gravel layer.
Description
technical field [0001] The invention relates to a visualization experiment device and a test method for simulating the dynamic sand plugging law of a gravel layer, and belongs to the technical field of oil and gas exploitation scientific research instruments. Background technique [0002] Sand production in oil and gas wells is one of the main problems encountered in the process of oil and gas exploitation in weakly cemented sandstone reservoirs. Sand production problems exist widely in the production of various oil fields at home and abroad. There are many factors for sand production in oil and gas wells, and the influencing factors can be roughly divided into three categories: reservoir geological factors, properties of sandstone reservoirs, and engineering factors. [0003] On the basis of correctly analyzing the mechanism of oil well sand production, adopting reasonable sand control methods becomes the key to successful sand control. Gravel packing sand control has stro...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E21B49/00E21B43/04
CPCE21B43/04E21B49/00
Inventor 綦民辉李明忠马俊杰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)