Oil-water metering drain pipe for oil displacement
By designing the oil-water metering drain pipe for oil-driving, using the separate design of the metering pipe and the drain pipe and the control of glass coker, the problems of the traditional buret tube with small range and inaccurate readings are solved, and more efficient and accurate oil-water metering is achieved.
Patent Information
- Application Number
- CN202422063057.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-23
AI Technical Summary
When metering large volume oil-water mixtures in the traditional lower liquid inlet buret tube, the measurement range is small, the reading accuracy is not high, the operation is cumbersome, the efficiency is low, and the oil-water layering leads to misjudgment.
A oil-water metering drainage pipe for oil-driving is designed. By setting two tubes of the metering pipe and the drainage pipe, the inlet and drainage pipe are separated. The drainage pipe is arranged on the upper or middle and upper part of the metering pipe, increasing the range of the metering pipe, and controlling the passage of the liquid through the first and second glass cocks to ensure the accuracy of reading.
It improves the range and reading accuracy of the metering tube, simplifies operation, improves efficiency, reduces oil losses, and solves the problems of small range, inaccurate readings and cumbersome operations in traditional technology.
Smart Images
Figure CN222951797U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to oil-water metering in core simulation experiments in the field of oilfield chemistry, and specifically relates to an oil-water metering liquid discharge pipe for oil displacement. Background Art
[0002] In the complex process of core flooding experiment, oil-displacing water is a key step to saturate the core oil phase, and its accurate measurement is crucial for the subsequent calculation of oil saturation and oil volume. However, the traditional bottom-inlet burette is incapable of dealing with large volumes of oil-water mixtures, especially when performing 3-5 pv oil-displacing water operations. This limitation is particularly obvious.
[0003] As the oil displacement process proceeds, a large amount of oil-water mixture continues to flow into the burette, which will soon exceed its designed range, forcing the experimenter to interrupt the experiment and perform drainage operations. During this process, due to the obvious stratification between oil and water, that is, water is in the lower layer and oil is in the upper layer, so the first thing released during drainage is water, followed by oil. It may also lead to misjudgment of the amount of water driven out (i.e., the key parameter used to calculate the saturated oil content in the core).
[0004] In addition, the design of the burette itself also limits the accuracy of its readings. The position of its discharge port and inlet port is close, which makes the liquid level fluctuate greatly during the continuous filling and discharge process, making it difficult to stabilize the reading. At the same time, the dead volume area at the bottom of the burette has no scale markings. If the volume of water discharged by the subsequent saturated oil is too small, the volume of liquid in this area cannot be accurately measured, further exacerbating the reading error.
[0005] In order to deal with these problems, experimenters often have to take some non-standard and even slightly clumsy methods, such as using simple tools to extract the oil layer from the upper part of the burette to minimize the loss of water in the lower part and try to improve the accuracy of measurement. However, this method is not only cumbersome and inefficient, but it is still difficult to completely eliminate reading errors.
[0006] Therefore, in order to improve the accuracy and efficiency of core flooding experiments, it is necessary to propose an oil-water metering discharge tube for oil displacement to solve the problems of small measuring range, low reading accuracy, cumbersome operation, low efficiency and oil loss of traditional metering tubes. Utility Model Content
[0007] The utility model aims to provide an oil-water metering and discharging pipe for oil displacement that can increase the measuring range of the metering pipe, has high reading accuracy, is simple to operate and has high efficiency, so as to overcome the shortcomings of the prior art, such as small measuring range, low reading accuracy, complicated operation, low efficiency and oil loss.
[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:
[0009] An oil-water metering and liquid discharge pipe for oil displacement comprises a metering pipe, one side of which is provided with a liquid inlet, the other side of which is connected to one end of a drainage pipe, the other end of which is connected to the liquid discharge pipe, a first glass cock is provided on the drainage pipe, and a second glass cock is provided at the bottom of the liquid discharge pipe; the liquid inlet is provided at the lower part of the metering pipe, in order to ensure that the liquid entering the liquid discharge pipe is all oil without water, thereby improving the measurement accuracy, the first glass cock and the second glass cock are used to control whether to allow the liquid to pass through.
[0010] Furthermore, the drainage tube is arranged on the upper part of the metering tube, which can improve the measuring range of the metering tube and increase the volume of the metering tube.
[0011] Furthermore, the drainage tube is arranged in the middle and upper part of the metering tube. When the oil drives the water to saturate the oil, more oil will be discharged. When the oil volume is flush with the drainage tube, enough oil can be accumulated, and then the first glass cock is opened to allow the oil to enter the discharge pipe through the drainage tube.
[0012] Furthermore, the metering tube and the discharge tube are provided with support rods, and the support rods are used to fix the metering tube and the discharge tube 17 to keep them stable during operation.
[0013] Furthermore, the measuring range of the measuring tube can be processed into 10ml, 15ml, 20ml and 25ml according to the requirements.
[0014] Furthermore, the volume range of the discharge tube can be processed into 10ml, 15ml, 20ml and 25ml according to needs.
[0015] Furthermore, the outer surfaces of the metering tube and the discharge tube are provided with scale lines to ensure that the data is clearly visible during the test.
[0016] Furthermore, a fluid inlet is provided on one side of the discharge pipe. When unseparated oil-water emulsion exists in the discharge pipe, a demulsifier can be added from the fluid inlet to stir the emulsion to achieve demulsification.
[0017] Furthermore, a sealing plug is provided on the fluid inlet.
[0018] Furthermore, openings are provided above the discharge pipe and the metering pipe.
[0019] Compared with the prior art, the utility model has the following beneficial technical effects:
[0020] The utility model provides an oil-water metering and discharging pipe for oil displacement. By arranging two pipes, a metering pipe and a discharge pipe, liquid intake and liquid discharge are carried out separately without interfering with each other, thereby improving the reading accuracy. The utility model solves the problem in the prior art that the liquid discharge port and the liquid inlet of the metering pipe are relatively close, and the metering pipe continuously takes in liquid and discharges liquid at the same time, thereby affecting the reading accuracy. For liquid discharge, only the first glass cock and the second glass cock need to be switched on and off, and the operation is simple and convenient.
[0021] Furthermore, the drainage tube is arranged at the upper part or the upper middle part of the metering tube, which increases the volume of the metering tube, can extend the drainage time interval, and accelerate the liquid entry speed of the liquid inlet. By opening the first glass cock, the oil sample can enter the drainage tube. The oil-water emulsion that has not been separated in the drainage tube can be directly demulsified by adding a demulsifier in the drainage tube and stirring the emulsion to achieve demulsification.
[0022] Furthermore, the measuring range of the metering tube and the discharge tube can be processed into a series of 10ml, 10ml, 15ml, 20ml and 25ml according to demand. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is an overall schematic diagram of the oil-water metering and drainage pipe for oil displacement in Example 1 of the utility model.
[0024] Figure 2 This is an overall schematic diagram of the oil-water metering and drainage pipe for oil displacement in Example 2 of the utility model.
[0025] Figure 3 This is an overall schematic diagram of the oil-water metering and drainage pipe for oil displacement in Example 3 of the utility model.
[0026] In the figure, 1. metering tube; 2. liquid inlet; 3. first glass cock; 4. discharge tube; 5. drainage tube; 6. second glass cock; 7. support rod; 8. fluid inlet; 9. sealing plug. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0029] The utility model provides an oil-water metering and liquid discharge pipe for oil displacement:
[0030] Example 1
[0031] See also Figure 1 , including a metering tube 1, a liquid inlet 2 is arranged at the lower part of one side of the metering tube 1, and the other side is connected to one end of a drainage tube 5, and the other end of the drainage tube 5 is connected to a discharge tube 4, a first glass cock 3 is arranged on the drainage tube 5, and a second glass cock 6 is arranged at the bottom of the discharge tube 4, and the drainage tube 5 is arranged at the upper part or the upper middle part of the metering tube 1, so that the measuring range of the metering tube 1 can be improved, and the volume of the metering tube 1 can be increased. When the oil drives the water to saturate the oil, the amount of oil discharged will be large. When the amount of oil is flush with the drainage tube 5, enough oil can be accumulated, and then the first glass cock 3 can be opened to allow the oil to enter the discharge tube 4 through the drainage tube 5; the outer surfaces of the metering tube 1 and the discharge tube 4 are provided with scale lines, and during use, the values can be accurately read and the measurement of the saturated oil can be accurately calculated; a fluid inlet 8 is arranged on one side of the discharge tube 4, and a sealing plug 9 is arranged on the fluid inlet 8; the metering tube 1 The measuring range is 20ml, the minimum division is 0.05ml, the top of the metering tube 1 is open, the drainage tube 5 connects the metering tube 1 and the drainage tube 4, the top of the drainage tube 4 is closed, and the fluid inlet 8 set on one side is for adding demulsifier from the fluid inlet 8 when there is unseparated oil-water emulsion in the drainage tube 4, stirring the emulsion to achieve demulsification, the liquid inlet 2 is set at the lower part of the metering tube 1, in order to make the liquid entering the drainage tube 4 all oil without water, so as to improve the measurement accuracy, the first glass cock 3 and the second glass cock 6 are used to control whether to let the liquid pass; the metering tube 1 and the drainage tube 4 are connected so that they can not disturb each other during drainage and inlet, and the second glass cock 6 is set at the bottom of the drainage tube 4 to avoid the problem that the water volume is too small to be measured, and there is dead volume at the bottom, there is no scale measurement, which affects the reading, thereby affecting the measurement of saturated oil.
[0032] The reason why a glass cock is used to control the inflow and outflow of liquid is that the glass cock usually refers to a valve installed at the lower end of the glass tube level gauge. It uses the pressure of the fluid to control the opening and closing of the valve, thereby adjusting the flow of the fluid, and has multiple functions such as preventing liquid fluctuations, ensuring the self-cleaning performance of the pipeline, and improving safety and environmental protection performance. Its working principle is based on fluid pressure control. When the liquid in the container is in the glass tube, the liquid will contact the valve, and the internal pressure will offset the external pressure, so that the valve remains closed. As the liquid level drops, the liquid pressure decreases, and the external pressure pushes the valve open to achieve the outflow of the fluid. When the liquid level rises again and contacts the valve, the valve closes again, thereby achieving precise control of the liquid level change.
[0033] Example 2
[0034] On the basis of Example 1, the upper end of the drain pipe 4 is opened, the fluid inlet 8 and the sealing plug 9 provided on the fluid inlet 8 are removed, and the first glass cock 3 and the second glass cock 6 are initially closed. When the oil drives the water to saturate the oil, when the oil and water enter the metering tube 1 from the liquid inlet 2, the water is located at the lower part of the metering tube 1, and the oil is located at the upper part of the metering tube 1. With the continuous injection of the incoming oil and water, the oil level gradually rises. When the oil amount is close to the full scale of the metering tube 1, the first glass cock 3 is opened, and the oil sample enters the drain pipe 4 through the drainage tube 5. When the oil sample continues to flow into the drain pipe 4 and the oil amount in the metering tube 1 is basically flush with the height of the drainage tube, the first glass cock 3 is closed. When the oil amount in the metering tube 1 is close to the full scale of the metering tube 1, the first glass cock 3 is opened again to enter the drain pipe 4 through the drainage tube 5, and this process is repeated. , the drainage and the inlet do not interfere with each other, and there is no need to worry about the oil and water entering too fast and the oil being discharged untimely, and pausing the test to manually drain the oil, which will affect the test efficiency, and then cause the metering tube to continuously inlet and discharge the liquid at the same time, affecting the accuracy of the readings; when the oil sample in the upper part of the metering tube 1 is relatively stable, the first glass cock 3 can be kept open to connect the metering tube 1 and the discharge pipe 4, and a demulsifier can be added to the discharge pipe 4 for stirring to accurately separate the oil-water emulsion and accurately measure the amount of oil sample and water. After recording the scale of the discharge pipe 4, the second glass cock 6 is opened to discharge the oil sample in the discharge pipe 4; if you want to continue using it, you can use a plug with the same diameter as the discharge pipe 4 to push the residual oil in the discharge pipe 4 to the lower part of the discharge pipe 4 from the top opening of the discharge pipe 4, which will not affect the accuracy of the next test data.
[0035] Example 3
[0036] On the basis of Example 2, a support rod is provided between the metering tube 1 and the discharge tube 4 to ensure the stability of the device during use.
[0037] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0039] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An oil-water metering and draining pipe for oil displacement, characterized in that: The measuring tube (1) comprises a metering tube (1), wherein a liquid inlet (2) is arranged at the lower part of one side of the metering tube (1), and the other side is connected to one end of a drainage tube (5), and the other end of the drainage tube (5) is connected to a liquid discharge tube (4), a first glass cock (3) is arranged on the drainage tube (5), and a second glass cock (6) is arranged at the bottom of the liquid discharge tube (4).
2. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The drainage tube (5) is arranged on the upper part of the metering tube (1).
3. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The drainage tube (5) is arranged at the upper middle portion of the metering tube (1).
4. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The metering tube (1) and the liquid discharge tube (4) are provided with support rods (7).
5. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The measuring tube (1) has a measuring range of 10 ml, 15 ml, 20 ml and 25 ml.
6. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The liquid discharge tube (4) has a range of 10 ml, 15 ml, 20 ml and 25 ml.
7. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: The outer surfaces of the metering tube (1) and the liquid discharge tube (4) are provided with scale lines.
8. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: A fluid inlet (8) is provided on one side of the liquid discharge pipe (4).
9. The oil-water metering and draining pipe for oil displacement according to claim 8, characterized in that: A sealing plug (9) is provided on the fluid inlet (8).
10. The oil-water metering and draining pipe for oil displacement according to claim 1, characterized in that: Openings are provided above the liquid discharge pipe (4) and the metering pipe (1).