Visual sintering-free flat plate sand filling model device and method

A model device and sinter-free technology, which is applied in earthwork drilling, mining fluid, wellbore/well components, etc., can solve the problems of poor model transparency, unfavorable observation, changes in pore structure and wettability, and epoxy resin is not environmentally friendly. , to achieve the effect of maintaining rock consistency, convenient operation and strong practicability

Pending Publication Date: 2022-02-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned and existing conventional flat plate physical simulation experiments usually prepare the model according to the needs, then forge and compact, high-temperature sintering to finalize the shape, and coat the surface with epoxy resin for packaging. However, this operation mode has limitations, and high-temperature sintering may easily lead to porosity. Changes in structure and wettability, epoxy resin is not environmentally friendly, and the poor transparency of the model after packaging is not conducive to observation
The sintered model can only be used once, wasting a lot of manpower and material resources

Method used

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  • Visual sintering-free flat plate sand filling model device and method
  • Visual sintering-free flat plate sand filling model device and method
  • Visual sintering-free flat plate sand filling model device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1 to Figure 4 As shown, a visual sintering-free flat sand filling model device includes a flat sand filling model, a model stamping device, and a model fixing bracket. The flat sand filling model is composed of a flat model main body 1, a model upper cover plate 2, a fixed steel plate 3; bolts 4; and a simulated well hole 5. The length of the main body of the model is 100mm, the width is 76mm, and the wall thickness is 20mm; 6 pieces are evenly distributed on both sides of the wide side The injection-production wellholes are simulated, and the upper cover plate simulates the actual injection-production well pattern layout of the reservoir.

[0044] The main body 1 of the flat sand filling model is placed horizontally, and the model is divided into partitions according to the needs of the experiment, separated by partition plates, and the mixed sand is loaded into the corresponding positions in stages. Carefully install and fix simulated injection-producti...

Embodiment 2

[0056] The formula listed in Table 1 below is taken as an example, and the quartz sand and clay of different particle sizes are weighed in proportion, and part of the quartz sand surface is subjected to wettability treatment as required. According to the above scheme, a sand filling model was made to carry out the physical simulation experiment of different types of reservoir layer interchange and variable flow line. The permeability was designed to be divided into four equal strips from high to low for sand filling. After the model was made, firstly divide The permeability of strips with different permeability was measured by air. The liquid permeability of each seepage zone was measured separately for the fully saturated brine. The model is saturated with oil, and the nine-point well pattern is reversed. Wells 2, 3, 5, and 8 are injection wells, and wells 6 and 9 are production wells to simulate the simple injection-production unit of the reservoir. The left and right ends o...

Embodiment 3

[0060] The formula listed in Table 2 below is taken as an example, and the quartz sand and clay of different particle groups are weighed in proportion, and the surface of the quartz sand is subjected to wettability treatment according to the research needs. According to the above scheme, a simulation experiment of the evolution law of positive rhythmic thick oil layer and high water consumption zone was made. According to the actual permeability distribution of the reservoir, the model was divided into three areas with L-shaped distribution according to the similarity principle. The hypertonic area of ​​3000-4500mD accounts for 2 / 3 and is distributed on the left and upper part of the model; the medium-osmotic area of ​​1500-2200mD accounts for 1 / 6; the low-osmotic area of ​​500-900mD accounts for 1 / 6 and is located at the lower right of the model; the left and right ends of the model Can be used as a pressure monitoring point. The injection end uses a high-precision ISCO pump ...

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Abstract

The invention relates to a sand filling model and particularly relates to a visual sintering-free flat plate sand filling model device and method. The device comprises a flat plate sand filling model, a model stamping device and a model fixing support, wherein the flat plate sand filling model comprises a flat plate model main body and a model upper cover plate; the model stamping device comprises a motor, a stamping rotating shaft, a control box, a stamping steel plate and a stamping device shelf; the model fixing support comprises a support and a model clamp, rotating shafts are arranged on the left and right sides of the upper end of the support, left and right ends of the model clamp are connected with rotating shafts, and the rotating shafts are connected with dip angle adjusting handles. In a simulation experiment, the device disclosed by the invention can be used for avoiding sintering and gluing operations, the model can be repeatedly used, practicability is high, and defects of the existing sand filling model are overcome.

Description

technical field [0001] The invention relates to a sand filling model, in particular to a visual sintering-free flat sand filling model device and method. Background technique [0002] In the process of oil and gas field development, reservoir physical simulation experiments have always been an important means for petroleum scientists to understand and master the law of oil-water seepage in reservoirs, and how to improve the similarity between indoor physical simulation experiments and mine practice has always been a breakthrough for scientific researchers problem. For the sake of safety and cost, the application of relevant technologies first obtains the required data through experiments with sand-packing models, especially for the study of horizontal and vertical heterogeneity in the late stage of water flooding in monolithic reservoirs, which requires a combination of various means or technologies to improve recovery rate, put forward higher requirements for the experimen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B43/30E21B49/00
CPCE21B43/20E21B43/30E21B49/00
Inventor 范菲王建张红欣杨海博刘丽陈亚宁张莉莉李奋吕秀芝马炳杰
Owner CHINA PETROLEUM & CHEM CORP
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