A kind of surface injection method of chemical flooding
A chemical flooding and surface technology, applied in earthwork drilling, wellbore/well components, production fluid, etc., can solve problems such as inability to achieve accurate measurement and control, time-consuming and labor-intensive problems
Active Publication Date: 2022-01-04
PETROCHINA CO LTD
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Problems solved by technology
[0005] The chemical flooding surface injection system is assembled on site when it is needed, and technical personnel are required to control the parameters and start the equipment during the preparation of the chemical flooding solution and the injection process of the chemical flooding. It is impossible to achieve accurate measurement and control, which is time-consuming strenuous
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0031] The embodiment of the present invention provides a chemical flooding surface injection method, see figure 1 , the method includes:
[0032] Step 1. Turn on the water supply unit through the control unit, so that the preset amount of water enters the curing unit;
[0033] Step 2. Open the material adding unit through the control unit, so that the preset amount of material enters the curing unit;
[0034] Step 3. After the preset aging time, the injection unit is turned on by the control unit, and the chemical flooding solution matured in the aging unit is injected into the well.
[0035] It can be seen that through the above-mentioned chemical flooding surface injection method, the control unit is used to make the preset amount...
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The invention discloses a surface injection method for chemical flooding, which belongs to the technical field of oil flooding in the petroleum industry. The method includes: step 1, open the water supply unit through the control unit, so that a preset amount of water enters the curing unit; step 2, open the material adding unit through the control unit, so that the preset amount of material enters the curing unit; step 3, after After the preset maturation time, the injection unit is opened by the control unit, and the chemical flooding solution matured in the maturation unit is injected into the well. In the present invention, the preset amount of water and the preset amount of material enter the aging unit by using the control unit, and the matured chemical flooding solution is injected into the well through the control unit. This process does not require technical personnel to perform equipment start-up, parameter control, etc. , which solves the time-consuming and labor-intensive problem that the existing technology cannot realize accurate measurement and control.
Description
technical field [0001] The invention relates to the technical field of oil flooding in the petroleum industry, in particular to a surface injection method for chemical flooding. Background technique [0002] With the continuous deepening of oilfield exploitation, the efficiency of primary oil recovery through the energy of the formation itself is already very low. Therefore, secondary oil recovery is carried out by injecting water into the well to increase the oil recovery rate of crude oil. With the continuous updating of technology, in the secondary On the basis of oil recovery (water flooding), tertiary oil recovery (including chemical flooding, gas flooding, microbial flooding, etc.) Oil displacement and sweep performance, thereby enhancing the oil recovery method of oil recovery. [0003] The currently used chemical flooding ground injection method is to assemble tanks, pipelines, feed pumps, liquid pumps and other devices on site, use the tanks to prepare chemical flo...
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IPC IPC(8): E21B43/22
CPCE21B43/16
Inventor 余吉良李勇斌王静赵立宁付亚秀张丽淑高珊珊
Owner PETROCHINA CO LTD