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An integrated filling-sand unloading device and experimental method for an oil flooding sand pipe model

An experimental method and a sand tube technology are applied in the field of an integrated device for filling and unloading sand tube models for oil displacement, which can solve the problems of uneven compaction, poor repeatability of sand tube models, and high pressure of hydraulic devices, and improve production efficiency. , High practical value, uniform force effect

Active Publication Date: 2022-02-15
西安开元钻探工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the poor repeatability and uneven compaction of the sand pipe model made by the artificial knocking method, and the defects of high pressure of the hydraulic device and no sand unloading device in the existing patent

Method used

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  • An integrated filling-sand unloading device and experimental method for an oil flooding sand pipe model
  • An integrated filling-sand unloading device and experimental method for an oil flooding sand pipe model
  • An integrated filling-sand unloading device and experimental method for an oil flooding sand pipe model

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a figure 1 The shown integrated sand filling-unloading device of the oil displacement sand pipe model includes a slideway guide rod 16 arranged on the support plate 8, and the slideway guide rod 16 is provided with a support girder 12, and the support girder 12 A gearbox 1 and a motor 2 are arranged on the top, the power output shaft of the motor 2 is connected to the gearbox 1, the output end of the gearbox 1 is connected to the upper end of the transmission screw 3, and the lower end of the transmission screw 3 passes through the After supporting the girder 12, it is connected with the push rod 4, the lower end of the push rod 4 is provided with a briquetting block 5, the briquetting block 5 is opposite to the sand pipe model 6, and the sand pipe model 6 is arranged above the support plate 8, The gearbox 1 is driven by the motor 2, the transmission screw 3 is driven by the gearbox 1, the transmission screw 3 pushes the push rod 4, the push rod...

Embodiment 2

[0056] Such as figure 2 As shown, the experimental method of the filling-sand unloading integrated device of the described a kind of oil displacement sand pipe model, comprises the following steps:

[0057] Step 1. Prepare the sand samples required for the sand pipe model: After the natural core is washed with oil / salt and dried, it is rolled into a loose sample, and sand samples with different mesh numbers are selected by vibrating sieve or artificial quartz particles with different mesh numbers are selected. ;

[0058] Step 2. Determine the sand sample proportioning plan for the target reservoir permeability: According to the statistical data of the physical property parameters of the reservoir target reservoir and the particle size analysis results, specify the required sand samples, adjust the proportion of different sand samples, and establish the target reservoir permeability Sand sample proportioning scheme;

[0059] Step 3. Sand pipe model filling: fill the sand pip...

Embodiment 3

[0071] Artificial percussion method and the inventive method make sand pipe model contrast: long 100cm internal diameter 3.8cm sand pipe model; Sandstone particle diameter 120-200 order, 80-120 order, 40-80 order, 26-40 order, 16-26 Mesh and 1-2mm, 2-4mm; standard saline (NaCl: CaCl2: MgCl2.6H2O mass ratio is 7:0.6:0.4).

[0072] Manual filling steps: (1) According to the purpose and requirements of the experiment, select the corresponding sand sample proportioning scheme;

[0073] (2) According to the sand sample proportioning plan, weigh the required sand sample quality with a balance;

[0074] (3) Mix the sand samples taken by weighing evenly;

[0075] (4) Fix the sand pipe model on the bracket and fix it firmly;

[0076] (5) According to the filling plan, weigh 100g of uniformly mixed sand samples each time and put them into the sand tube model with a beaker;

[0077] (6) Put the compacting rod into the sand pipe model, and perform manual knocking 100 times;

[0078] (...

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Abstract

The present invention provides an integrated sand filling and unloading device for an oil flooding sand pipe model. There is a gearbox and a motor, the power output shaft of the motor is connected to the gearbox, the output end of the gearbox is connected to the upper end of the transmission screw, and the lower end of the transmission screw passes through the support beam and is connected to the push rod. The lower end of the push rod is provided with a briquetting block, the briquetting block is opposite to the sand pipe model, the sand pipe model is arranged above the support plate, and a pressure sensor is arranged below the sand pipe model, the motor, pressure The sensor is electrically connected to the computer control system; the device has reasonable design, convenient installation and layout, complete functions, easy operation and good use effect, and can effectively solve the problems of poor repeatability, uneven compaction and existing sand pipe models made by manual knocking. In the patent, there are problems such as high pressure of the hydraulic device and no sand unloading device.

Description

technical field [0001] The invention belongs to the technical field of physical models for oil field development, and in particular relates to an integrated device and method for filling and unloading sand pipe models for oil displacement. Background technique [0002] In the physical simulation experiment of oilfield recovery, especially in the tertiary oil recovery, the oil displacement mechanism, the optimal formulation and injection method optimization, the performance evaluation of the oil displacement agent and the verification of the oil displacement effect all need to be completed by physical simulation experiments. At present, natural cores and artificial cores are generally used for physical simulation, but the length of natural cores is short and resources are insufficient. Artificial cores use epoxy resin as a cementing agent. Commonly used amine curing agents and benzene diluents are used in the dilution and curing of epoxy resins. The agent is highly toxic and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B43/16
CPCE21B47/00E21B43/16
Inventor 秦国伟王香增梁全胜代旭张蓓蕾孙赛赛郑俨钊吴梅
Owner 西安开元钻探工程有限公司
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