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Gas well scaling simulation device and simulation method

A simulation device and gas well technology, applied in the direction of measuring device, earthwork drilling, borehole/well components, etc., can solve the problem of low simulation accuracy of the gas well scaling simulation device, achieve real gas well environment, high simulation accuracy, heating high efficiency effect

Pending Publication Date: 2021-06-22
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a gas well scaling simulation device to solve the problem that the prior art simulation device is only used to simulate gas well scaling at a specific temperature and under different pressures, ignoring changes in fluid pressure inside the gas well and formation temperature The influence of the change causes the technical problem that the simulation accuracy of the gas well scaling simulation device is low; the purpose of the present invention is also to provide a gas well scaling simulation method with high simulation accuracy

Method used

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  • Gas well scaling simulation device and simulation method
  • Gas well scaling simulation device and simulation method

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specific Embodiment 1

[0046] Such as figure 1 , figure 2 with image 3 As shown, the gas well scaling simulation device includes a gas storage device 1 , a liquid storage device 2 , a gas-liquid mixer 5 , and a scaling simulation tube 6 . Among them, the gas storage device 1 is a gas storage tank, which is mainly used to provide simulated gas; the liquid storage device 2 is a liquid storage tank, which is mainly used to provide simulated liquid. Wherein, the simulated gas can be nitrogen and carbon dioxide, and the simulated liquid can be samples such as simulated formation water and real formation water with different salinities. Both the gas storage device 1 and the liquid storage device 2 are in communication with the gas-liquid mixer 5. In the gas-liquid mixer 5, the above-mentioned simulated gas and simulated liquid are mixed to obtain an experimental fluid. The downhole scaling situation is simulated in the scale simulation tube.

[0047] It should be noted that the number of gas storage...

Embodiment 2

[0055] Such as Figure 4 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that: only two fouling simulation tubes 6 are provided, and at this time, there is only one throttle nozzle 11 .

Embodiment 3

[0057] Such as Figure 5 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that the throttling structure adopts a throttle valve 14, which can realize the effect of throttling and reducing pressure, and the two adjacent fouling simulation pipes respectively correspond to throttling The ports at both ends of the valve are threaded, which is convenient to operate.

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Abstract

The invention relates to a gas well scaling simulation device and simulation method. The gas well scaling simulation device comprises a gas storage device used for providing simulative gas, a liquid storage device used for providing simulative liquid, a gas-liquid mixer used for mixing the simulative gas and the simulative liquid to obtain experimental fluid and scaling simulation pipes; at least two scaling simulation pipes are sequentially connected in series to simulate a gas well; a throttling structure is arranged on any two corresponding adjacent scaling simulation pipes; the two corresponding adjacent scaling simulation pipes are in communication through a throttling channel to simulate the change that the pressure of gas well fluid is gradually reduced in the flowing direction of the gas well fluid; and each scaling simulation pipe is provided with a heating device used for adjusting the temperature of the scaling simulation pipe so as to simulate the change that the corresponding formation temperature is gradually reduced in the flowing direction of the gas well fluid. According to the technical scheme, the influence of the fluid pressure change in the gas well and the formation temperature change on gas well scaling is considered, and the environment in the whole gas well can be simulated from the overall macroscopic aspect.

Description

technical field [0001] The invention belongs to the technical field of scale prevention in gas field development, and in particular relates to a gas well scaling simulation device and a simulation method. Background technique [0002] Scaling occurs in the development process of oil and gas fields. During the production of gas wells, formation water is often produced. Changes in temperature and pressure along the wellbore and evaporation of formation water into the gas phase can cause formation water scaling to increase, resulting in wellbore fouling. dirt and risk of clogging. Scaling in the wellbore includes three kinetic processes. One is that the scaling ions in the water diffuse to the pipe wall, and crystallization scale is directly formed on the pipe wall; The pipe wall accumulates and adheres to the pipe wall; the third is that the dirt adsorbed or accumulated on the pipe wall peels off and re-enters the formation water. After the combined effect, the scale generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00G01N33/00G01N25/00
CPCE21B47/00G01N33/00G01N25/00
Inventor 刘慧李晓晨李国锋周瑞立梅杰杨俊杨易骏王璇刘伟华赵建军李璇刘云云
Owner CHINA PETROLEUM & CHEM CORP
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