CN214749570U - Online integrated synchronous measuring device for water content of oil well liquid - Google Patents
Online integrated synchronous measuring device for water content of oil well liquid Download PDFInfo
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- CN214749570U CN214749570U CN202120541210.7U CN202120541210U CN214749570U CN 214749570 U CN214749570 U CN 214749570U CN 202120541210 U CN202120541210 U CN 202120541210U CN 214749570 U CN214749570 U CN 214749570U
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Abstract
The utility model relates to an online integrated synchronous measuring device for water content of oil well liquid, which comprises a tank body, a first three-way passage and a second three-way passage; the first three-way passage is provided with an inlet, a first outlet of the first three-way passage is connected with the bottom end of the tank body, a second outlet of the first three-way passage is connected with a first inlet of the second three-way passage through an electric valve, and the upper part of the tank body is connected with a second inlet of the second three-way passage through a pipeline; the top of the tank body is provided with a PLC controller and a liquid level sensor, the liquid level sensor is positioned in the tank body and connected with the PLC controller, a first pressure sensor is arranged on the first tee passage, and a second pressure sensor is arranged at the bottom of the tank body. The utility model is suitable for a market of in the low-yield well, high crude oil moisture content on-line measuring and liquid measure synchronous measurement saves a large amount of economic cost for the enterprise to will bring considerable social.
Description
Technical Field
The utility model relates to an oil field production measurement field especially relates to an online integration synchronous measurement device of oil well liquid measure moisture.
Background
The current online measurement of the moisture content mainly comprises a conductivity method, a ray method, a density method, a radio frequency method and the like, wherein:
the electric method has narrow measuring range, is greatly influenced by emulsification and mineralization degree, has greatly reduced accuracy when the gas content is slightly high, has poor stability and large data drift, and needs to be corrected frequently; the ray method has radioactivity, does not meet the requirements of safety and environmental protection, has poor accuracy when the gas content is more than 20 percent, is greatly influenced by the density of the fluid to be measured, needs frequent calibration and is not suitable for high-precision measurement.
The online measurement of the liquid amount of the single well mainly adopts a software liquid measuring method, which belongs to an indirect measurement method, has larger working condition change and larger error of a low liquid production well, and can not realize the synchronous measurement of the water content.
In a word, the traditional online measurement method for the water content and the liquid yield of the wellhead has defects in the aspects of precision and the like on one hand, and cannot realize synchronous online measurement on the other hand. Through the prior exploration of the technology, on the basis of summarizing the water content and daily liquid yield test defects, the device is adopted, accurate online monitoring of the water content and the daily liquid yield is realized through a direct quality deduction algorithm, and the device has a good application range.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide an online integrated synchronous measurement device for water content of an oil well fluid which overcomes or at least partially solves the above problems.
According to one aspect of the utility model, an online integrated synchronous measuring device for the water content of the oil well liquid amount is provided, which comprises a tank body, a first three-way passage and a second three-way passage; the first three-way passage is provided with an inlet, a first outlet of the first three-way passage is connected with the bottom end of the tank body, a second outlet of the first three-way passage is connected with a first inlet of the second three-way passage through an electric valve, and the upper part of the tank body is connected with a second inlet of the second three-way passage through a pipeline; the top of the tank body is provided with a PLC controller and a liquid level sensor, the liquid level sensor is positioned in the tank body and connected with the PLC controller, a first pressure sensor is arranged on the first tee passage, and a second pressure sensor is arranged at the bottom of the tank body.
According to a possible design, the upper portion of the tank body is further provided with a second maintenance valve, and the bottom end of the first three-way passage is provided with a first maintenance valve.
According to one possible design, the liquid level sensor is a baofeng BF-UQZ explosion-proof floating ball liquid level meter.
According to one possible design, a first non-return valve is arranged between the second three-way passage and the electric valve.
According to one possible design, a second one-way valve is arranged between the second three-way passage and the tank.
The utility model discloses be exactly in order to solve low cost, simple structure, the degree of accuracy height and the difficult point of easy maintenance, adopt the physics device to calculate moisture content and single well daily output through the quality, be applicable to in the low yield well, plateau oil moisture content on-line measuring and the market of liquid measure synchronous measurement, save a large amount of economic cost for the enterprise to will bring considerable social.
Drawings
FIG. 1 is a schematic structural diagram of an online integrated synchronous measurement device for water content of oil well liquid;
1-a first pressure sensor, 2-a first maintenance valve, 3-an electric valve, 4-a second pressure sensor, 5-a tank body, 6-a liquid level sensor, 7-a second maintenance valve, 8-a PLC (programmable logic controller), 9-a first check valve, 10-a second check valve, 11-a first three-way channel and 12-a second three-way channel.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
An online integrated synchronous measuring device for water content of oil well liquid comprises a tank body 5, a first three-way passage 11 and a second three-way passage 12, as shown in figure 1.
The first three-way passage 11 is provided with an inlet, a first outlet of the first three-way passage 11 is connected with the bottom end of the tank body 5, a second outlet of the first three-way passage 11 is connected with a first inlet of the second three-way passage 12 through the electric valve 3, and the upper part of the tank body 5 is connected with a second inlet of the second three-way passage 12 through a pipeline.
The top of the tank body 5 is provided with a PLC controller 8 and a liquid level sensor 6, the liquid level sensor 6 is positioned inside the tank body 5 and connected with the PLC controller 8, a first pressure sensor 1 is arranged on a first three-way passage 11, and a second pressure sensor 4 is arranged at the bottom of the tank body 5.
In one embodiment, the upper part of the tank body 5 is further provided with a second service valve 7, and the bottom end of the first three-way passage 11 is provided with a first service valve 2.
In one embodiment, the level sensor 6 is an explosion-proof float level gauge having the model of Baofeng BF-UQZ.
In one embodiment, a first check valve 9 is disposed between the second three-way passage 12 and the electric valve 3 for preventing the reverse flow of the liquid.
In one embodiment, a second check valve 10 is disposed between the second three-way passage 12 and the tank 5 to prevent the liquid from flowing back into the tank 5.
When the electric valve 3 is closed, liquid enters the tank body 5 through the inlet, and when the liquid level sensor 6 measures that the liquid reaches a certain height, the electric valve 3 is opened again.
The second pressure sensor 4 at the bottom of the tank 5 measures the pressure value at a certain liquid level height at the same time, thereby obtaining the density of the liquid by the following formula 1, and then obtaining the water content of the liquid by the formula 3.
Through the 8 devices of PLC controller, can incessantly carry out the transmission of sensor data, and then calculate the moisture content condition of liquid to be used for the auxiliary production decision-making, the index that detects than manual sampling and other indirectness more accords with trade required precision.
Theoretical formula:
1. calculating the density of the mixed liquid:
ρ ═ F/ghs (equation 1)
ρ represents the liquid density;
g is a constant of 9.8N/kg;
h is the depth of the liquid;
s represents the forced bottom area of the pressure sensor;
f is the pressure, known from the pressure sensor.
2. Obtaining the daily liquid production of a single well:
QLis the daily liquid production per well;
ρ represents the liquid density;
s is the bottom area of the box body;
h1is t1Time (seconds), the height of the liquid measured by the level sensor;
h2is t2Time (seconds), the level sensor measures the height of the liquid.
3. Calculating the water content of the liquid by adopting a mass water content calculation method
In the formula:
f is the water content;
ρoilis the density of the crude oil;
ρmixis the density of the liquid mixture;
ρwas density of water, generally pwSee equation 3 for 1.
The device is based on the theoretical basis of mass percent water content, the water content of liquid is obtained through a density method, the density of the liquid is obtained through the design of the device, and the real-time liquid yield value is obtained through a static measurement method in dynamic liquid measurement by combining the increment of the liquid volume in a regular tank body in unit time.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. An online integrated synchronous measuring device for water content of oil well liquid is characterized by comprising a tank body (5), a first three-way passage (11) and a second three-way passage (12);
the first three-way passage (11) is provided with an inlet, a first outlet of the first three-way passage (11) is connected with the bottom end of the tank body (5), a second outlet of the first three-way passage (11) is connected with a first inlet of the second three-way passage (12) through the electric valve (3), and the upper part of the tank body (5) is connected with a second inlet of the second three-way passage (12) through a pipeline;
the top of the tank body (5) is provided with a PLC (programmable logic controller) controller (8) and a liquid level sensor (6), the liquid level sensor (6) is located inside the tank body (5) and connected with the PLC controller (8), a first pressure sensor (1) is arranged on the first tee passage (11), and a second pressure sensor (4) is arranged at the bottom of the tank body (5).
2. The online integrated synchronous measurement device for the water content of the oil well fluid volume as claimed in claim 1, characterized in that the upper part of the tank body (5) is further provided with a second service valve (7), and the bottom end of the first three-way passage (11) is provided with a first service valve (2).
3. The online integrated synchronous measurement device for the water content of the oil well fluid volume as recited in claim 1, characterized in that the type of the fluid level sensor (6) is baofeng BF-UQZ explosion-proof floating ball fluid level meter.
4. The online integrated synchronous measurement device for the water content of oil well fluid according to claim 1, characterized in that a first check valve (9) is arranged between the second three-way passage (12) and the electric valve (3).
5. The online integrated synchronous measurement device for the water content of oil well fluid according to claim 1, characterized in that a second one-way valve (10) is arranged between the second three-way passage (12) and the tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120541210.7U CN214749570U (en) | 2021-03-16 | 2021-03-16 | Online integrated synchronous measuring device for water content of oil well liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120541210.7U CN214749570U (en) | 2021-03-16 | 2021-03-16 | Online integrated synchronous measuring device for water content of oil well liquid |
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| CN214749570U true CN214749570U (en) | 2021-11-16 |
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| CN202120541210.7U Active CN214749570U (en) | 2021-03-16 | 2021-03-16 | Online integrated synchronous measuring device for water content of oil well liquid |
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- 2021-03-16 CN CN202120541210.7U patent/CN214749570U/en active Active
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