CN108956477B - Optical detection device for measuring crude oil water content of oil well liquid production profile - Google Patents
Optical detection device for measuring crude oil water content of oil well liquid production profile Download PDFInfo
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- CN108956477B CN108956477B CN201810556211.1A CN201810556211A CN108956477B CN 108956477 B CN108956477 B CN 108956477B CN 201810556211 A CN201810556211 A CN 201810556211A CN 108956477 B CN108956477 B CN 108956477B
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- crude oil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
Abstract
The invention belongs to the technical field of oilfield equipment, and particularly relates to an optical detection device for measuring the water content of crude oil in a liquid production profile of an oil well. The device comprises a light path incidence device, a light path emergence device, a covering device, a telescopic column, a line conveying pipeline and a crude oil conveying pipeline; the telescopic column comprises a shaft column, an antenna telescopic device and a telescopic wall, and the telescopic wall is connected with the shaft column through the antenna telescopic device; the covering device is connected with the bottom end of the crude oil conveying pipeline; the light path incidence device and the light path emergence device are positioned in the crude oil conveying pipeline, and the top end of the light path incidence device is connected with the line conveying pipeline; the light path incidence device and the light path emergence device transmit data through a lead connected with the inside of the line conveying pipeline; the covering device is made of elastic rubber materials and is in a hollow revolving body with two conical ends, a round hole is formed in the top end of the covering device, and a rubber column with a small hole is fixed in a crude oil conveying pipeline above the round hole. The device can know and master the production conditions of each petroleum production layer in time.
Description
Technical Field
The invention belongs to the technical field of oilfield equipment, and particularly relates to an optical detection device for measuring the water content of crude oil in a liquid production profile of an oil well.
Background
The oil exploitation also enters the stage of high water content and even ultrahigh water content in sequence, and the determination of the water content of the oil in the oil layer is very important in order to know and master the production conditions of each production layer in time. At present, one of the most common instruments for measuring the water content of crude oil is a capacitive sensor. The capacitive sensor is widely used due to the advantages of simple measurement principle, high dynamic sensitivity, good safety and the like, but is easily influenced by parasitic capacitance and external temperature in measurement. Therefore, it is necessary to design an optical detection device for measuring the crude oil water content of the oil well liquid production profile.
Disclosure of Invention
The invention aims to provide an optical detection device for the crude oil water content of an oil well liquid production profile for monitoring the crude oil water content in real time, which can effectively avoid the problems of the existing capacitive sensor by using laser detection and simultaneously avoid the problems of high sampling randomness, untimely sampling, incapability of reflecting the change of the crude oil water content in time, high labor intensity, incapability of carrying out online accurate measurement, incapability of meeting the requirement of automatic management of oil field production and the like in the process of manually measuring the crude oil water content.
The technical scheme adopted by the invention is as follows: an optical detection device for measuring the crude oil water content of an oil well liquid production profile comprises a light path incidence device, a light path emergence device, a covering device, a telescopic column, a line conveying pipeline and a crude oil conveying pipeline; the telescopic column comprises a shaft column, an antenna telescopic device and a telescopic wall, and the telescopic wall is connected with the shaft column through the antenna telescopic device; the covering device is connected with the bottom end of the crude oil conveying pipeline; the light path incidence device and the light path emergence device are positioned in the crude oil conveying pipeline, and the top end of the light path incidence device is connected with the line conveying pipeline; and the light path incidence device and the light path emergence device transmit data through a lead connected with the inside of the line conveying pipeline.
Furthermore, the covering device is a rubber body made of elastic rubber materials, the covering device is a hollow revolving body with two conical ends, a round hole is formed in the top end of the covering device, and a rubber column with a small hole is fixed in the crude oil conveying pipeline above the round hole.
Furthermore, elastic pieces are uniformly distributed on the circumference of the rubber body of the covering device and made of spring steel.
Furthermore, the covering device is an umbrella-shaped block which can be contracted and supported, the umbrella-shaped block is connected with a block control device positioned on a crude oil conveying pipeline, the block control device is fixed at the bottom of the crude oil conveying pipeline, and the block control device comprises a hollow cylindrical shell and a control device; the line conveying pipeline is divided into two branch line conveying pipelines below the shaft column, one branch line conveying pipeline is a first branch line conveying pipeline entering the light path incidence device and the light path emergence device, the other branch line conveying pipeline is a second branch line conveying pipeline entering the block control device through the connecting pipe and the crude oil conveying pipeline, and the shaft column is connected with the crude oil conveying pipeline below through the connecting pipe.
Furthermore, the covering device comprises an umbrella framework capable of stretching and a hydraulic rod connected with an umbrella framework telescopic piece, the hydraulic rod is connected with a hydraulic pump, the hydraulic pump is connected with a controller, the hydraulic pump and the controller are installed in a control grid block control device, and the grid block control device is connected with a ground control system.
Furthermore, one end of the antenna expansion piece is fixed on the shaft column, the other end of the antenna expansion piece is fixed on the expansion wall, the antenna expansion piece comprises an expansion pipe and compression springs which are sleeved, the compression springs are positioned in the expansion pipe, and the number of the antenna expansion pieces is four; the telescopic wall is an elastic wall.
Further, the diameter of the telescopic wall is telescopically adjusted according to the diameter of the oil well.
Further, the light path incidence device comprises a transparent shell and an incidence light path instrument combination, wherein the incidence light path instrument combination comprises a laser, a polarizer, a photoelastic modulator and a phase shifter; the light path emergent device comprises a transparent shell and an emergent light path instrument combination, wherein the emergent light path instrument combination comprises an analyzer, a diaphragm and a photoelectric signal converter.
The system further comprises a data acquisition system, wherein the data acquisition processing system comprises a BNC adapter, a data acquisition card and a data processing device; the data acquisition card acquires data output by the BNC adapter and transmits the data to the data processing device; the data processing device is an electronic computer and is used for storing, analyzing and processing data sent by the data acquisition card.
Further, the line conveying pipeline comprises a bearing line, a control line, a laser emission control line and a laser conversion electric signal receiving line.
Furthermore, the crude oil conveying pipeline is provided with an optical path incidence device and an optical path exit device, and the laser emitted from the optical path incidence device penetrates through the crude oil to be received by the optical path exit device. The laser signal received by the light path emitting device is directly converted into an electric signal and enters the data acquisition and processing system through a line conveying pipeline.
Furthermore, the position between the light path incidence device and the light path emission device is fixed, and the water content of the crude oil is judged by measuring the change of the intensity of the laser after the laser penetrates through the crude oil. The laser used is an electromagnetic wave of a type having a high oil absorbance and a low water absorbance or a low oil absorbance and a high water absorbance.
Furthermore, before the device is placed into an oil well, the diameter of the telescopic column is adjusted to be the same as that of the oil well, and the telescopic column plays a role in fixing and supporting and enables the laser emitting device and the laser receiving device to be located at the circle center of the oil well all the time. The diameter of the telescopic column can be adjusted according to the diameter of the oil well, and the application range is expanded.
The invention has the beneficial effects that: the utility model provides a liquid profile crude oil moisture content optical detection device is produced to oil well for crude oil moisture content real-time supervision, it can effectively avoid the problem that current capacitanc sensor exists with laser detection, the sampling randomness that has avoided the in-process of manual measurement crude oil moisture content to exist simultaneously is big, the sample is untimely, can not in time reflect the change of crude oil moisture content, intensity of labour is big, can't carry out online accurate measurement, can not satisfy a great deal of problems such as oil field production automated management needs. The device simple structure, convenient operation can be fast, high-efficient detect crude oil water content, through certain laser to only water or only to the sensitive wavelength of oil of transmission, utilizes its change of penetrating oil reservoir back intensity to detect crude oil water content. The device can know and master the production conditions of each petroleum production layer in time, thereby guiding the oil extraction work and having better social and economic benefits in practical application.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the first embodiment;
FIG. 2 is a schematic structural diagram of a telescopic device according to a first embodiment;
FIG. 3 is a schematic structural view of a telescopic column according to a first embodiment;
FIG. 4 is a cross-sectional view of an optical path incident apparatus according to an embodiment;
FIG. 5 is a block diagram of the structure of the optical path entering device and the optical path exiting device in the first embodiment;
FIG. 6 is a schematic structural view of the second embodiment;
FIG. 7 is a schematic structural view of the third embodiment;
FIG. 8 is a branch schematic view of the pipeline transportation pipeline in the third embodiment.
The specific implementation mode is as follows:
example one
Referring to fig. 1-5, an optical detection device for measuring crude oil water content of an oil well liquid production profile comprises a light path incidence device 1, a light path emergence device 2, a covering device 4, a telescopic column 6, a line conveying pipeline 9 and a crude oil conveying pipeline 10; the telescopic column 6 comprises a shaft column 61, an antenna expansion piece 62 and a telescopic wall 63, the telescopic wall 63 is connected with the shaft column 61 through the antenna expansion piece 62, the telescopic column 6 is fixed in the oil well to play a role in fixing, and the laser emitting device and the laser receiving device are kept fixed at the position of the circle center; the covering device 4 is connected with the bottom end of the crude oil conveying pipeline 10; the light path incidence device 1 and the light path emergence device 2 are positioned in a crude oil conveying pipeline 10, and the top end of the light path incidence device 1 is connected with a line conveying pipeline 9; the light path incidence device 1 and the light path emergence device 2 transmit data through a lead connected with the interior of the line conveying pipeline 9; one end of the antenna expansion piece 62 is fixed on the shaft post 61, the other end of the antenna expansion piece 62 is fixed on the expansion wall 63, the antenna expansion piece 62 comprises an expansion pipe and compression springs which are sleeved, the compression springs are positioned in the expansion pipe, and the number of the antenna expansion pieces 62 is four; the telescopic wall 63 is an elastic wall; the diameter of the telescopic wall 63 is telescopically adjusted according to the diameter of the oil well 5; the light path incidence device 1 comprises a transparent shell 20 and an incidence light path instrument combination, wherein the incidence light path instrument combination comprises a laser 11, a polarizer 12, a photoelastic modulator 13 and a phase shifter 14; the light path emitting device 2 comprises a transparent shell 20 and an emitting light path instrument combination, wherein the emitting light path instrument combination comprises an analyzer 15, a diaphragm 16 and a photoelectric signal converter 17; the system also comprises a data acquisition and processing system, wherein the data acquisition and processing system comprises a BNC adapter, a data acquisition card and a data processing device; the data acquisition card acquires data output by the BNC adapter and transmits the data to the data processing device; the data processing device is an electronic computer and is used for storing, analyzing and processing data sent by the data acquisition card; the line conveying pipeline 9 comprises a bearing line, a control line, a laser emission control line and a laser conversion electric signal receiving line. The crude oil flows upwards from the pores of the cover device and enters the crude oil conveying pipeline and fills the pipeline. The crude oil conveying pipeline is internally provided with a laser transmitting device and a laser receiving device, the crude oil is transmitted by laser between the two devices and flows out of the gap 8, and ground workers can obtain the water content information of each oil layer finally through the continuous repetition of the three steps of fixing, detecting and withdrawing in different underground oil layers.
Example two
On the basis of the technical scheme of the embodiment, the covering device 4 is a rubber body made of elastic rubber materials, the rubber body is a hollow revolving body with two conical ends, the top end of the covering device 4 is provided with a round hole 41, a rubber column with a small hole is fixed in the crude oil conveying pipeline 10 above the round hole 41, and the covering device made of rubber materials can meet the sealing requirement and the reducing requirement.
EXAMPLE III
On the basis of the first technical scheme and the second technical scheme, the elastic sheets 42 which are uniformly distributed on the circumference are arranged in the rubber body of the covering device 4, the elastic sheets 42 are made of spring steel, and the elastic sheets made of the spring steel can obtain better sealing effect and reducing resilience.
Example four
On the basis of the technical scheme of the embodiment, the covering device 4 is an umbrella-shaped block which can be contracted and supported, the umbrella-shaped block is connected with a block control device 3 positioned on a crude oil conveying pipeline 10, the block control device 3 is fixed at the bottom of the crude oil conveying pipeline 10, and the block control device 3 comprises a hollow cylindrical shell and a control device; the line conveying pipeline 9 is divided into two branch line conveying pipelines below the shaft column 61, one branch line conveying pipeline is a first branch line conveying pipeline 92 entering the light path incidence device 1 and the light path emergence device 2, the other branch line conveying pipeline is a second branch line conveying pipeline 93 entering the block control device 3 through the connecting pipe 7 and the crude oil conveying pipeline 10, and the shaft column 61 is connected with the crude oil conveying pipeline 10 below through the connecting pipe 7; the covering device 4 comprises an umbrella framework capable of stretching and a hydraulic rod connected with an umbrella framework telescopic piece, the hydraulic rod is connected with a hydraulic pump, the hydraulic pump is connected with a controller, the hydraulic pump and the controller are installed in the control grid block control device 3, and the grid block control device 3 is connected with a ground control system.
When the device starts to operate, a technical detection person on the ground sends a certain command to enable the umbrella-shaped check block to be folded and unfolded, the umbrella surface covers the whole oil well, and the middle of the umbrella-shaped check block is connected with a crude oil conveying pipeline through a check block control device. The electric wire in the line conveying pipeline is connected with the light path incidence device, the light path emergent device and the grating control device, certain electric signals are sent out through the ground to enable the incidence light path instrument combination to send out laser, the emergent light path instrument combination receives the light signals, the light signals are converted into electric signals, the electric signals are transmitted back to the ground data acquisition and processing system through the electric wire, and the grating control device can control the support and the contraction of the umbrella-shaped grating by emitting certain electric signals. The crude oil conveying pipeline is connected with the shaft column in the telescopic column. The line conveying pipeline is led out from the ground, sequentially penetrates through the oil well and the shaft column, two lines are divided at the lower end of the shaft column, one line enters the laser emitting device and the laser receiving device sequentially, and the other line enters the block control device through the pipeline wall of the pipeline and the crude oil conveying pipeline. The diameter of the pipeline of the crude oil conveying pipeline is larger than that of the shaft column, the crude oil conveying pipeline and the shaft column are connected through a connecting pipeline, and crude oil can flow out through a gap 8 between the crude oil conveying pipeline and the shaft column. The casing of the block control device is a hollow cylinder, and crude oil flows into a crude oil conveying pipeline from the middle hollow part.
EXAMPLE five
For the above embodiment, the method for measuring the water content of the oil in the oil-bearing layer in the oil well by using the optical detection device for measuring the water content of the crude oil in the oil well production profile comprises the following steps:
the method comprises the following steps: fixing
Adjust flexible post, make its diameter the same with the oil well diameter, link to each other the electric wire in data acquisition and processing system and the circuit pipeline, put this device into the oil well through the bearing line of circuit pipeline part, put the back of waiting to measure the degree of depth, ground staff sends electrical signal through the computer in the data acquisition and processing system, if adopt the device that covers of umbrella-type check fender, then make check fender controlling means work through the circuit pipeline, keep off the umbrella-type check and transfer into support state by the shrink state, cover whole oil well.
Step two: detection of
Ground staff send out the signal of telecommunication through the computer in the data acquisition and processing system, and the signal of telecommunication loops through the circuit pipeline, gets into the light path incidence device, and the laser instrument begins to send laser in the light path incidence device, and the laser of output incides the polarizer, and the polarized light that emerges from the polarizer loops through photoelastic modulator, phase shifter in the front, and the frequency of photoelastic modulator sets to 50kHz, and phase shifter fundamental frequency signal adjusts to zero. The output laser enters the light path exit device through the crude oil and sequentially enters the analyzer, the diaphragm and the photoelectric signal converter. The optical signals are converted into electric signals through the photoelectric signal converter and are sequentially transmitted to the ground through a line transmission pipeline. The electric signal passes through the BNC adapter and the data acquisition card to reach the data processing device.
Step three: retraction
After information of the water content of each oil layer is obtained through a computer, ground workers send out electric signals through the computer, if a covering device of the umbrella-shaped check is adopted, the electric signals sequentially pass through a line conveying pipeline and enter a check control device, and the check control device controls the umbrella-shaped check to change from a supporting state to a contracting state.
Claims (10)
1. The utility model provides a measure oil well production fluid section crude oil moisture content optical detection device which characterized in that: comprises a light path incidence device (1), a light path emergence device (2), a covering device (4), a telescopic column (6), a line conveying pipeline (9) and a crude oil conveying pipeline (10); the telescopic column (6) comprises a shaft column (61), an antenna expansion piece (62) and a telescopic wall (63), and the telescopic wall (63) is connected with the shaft column (61) through the antenna expansion piece (62); the covering device (4) is connected with the bottom end of the crude oil conveying pipeline (10); the light path incidence device (1) and the light path emergence device (2) are positioned in a crude oil conveying pipeline (10), and the top end of the light path incidence device (1) is connected with a line conveying pipeline (9); the light path incidence device (1) and the light path emergence device (2) transmit data through a wire connected with the inside of the line conveying pipeline (9); covering device (4) are for the umbrella type check that can contract and support to keep off, and the umbrella type check keeps off and is connected with check that is located crude oil pipeline (10) and keeps off controlling means (3), and check keep off controlling means (3) and be fixed in crude oil pipeline (10) bottom, and check keep off controlling means (3) including hollow cylindrical shell and controlling means.
2. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 1, is characterized in that: the covering device (4) is a rubber body made of elastic rubber materials, the rubber body is a hollow revolving body with two conical ends, a round hole (41) is formed in the top end of the covering device (4), and a rubber column with a small hole is fixed in the crude oil conveying pipeline (10) above the round hole (41).
3. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 2, is characterized in that: elastic pieces (42) are uniformly distributed on the circumference of the rubber body of the covering device (4), and the elastic pieces (42) are made of spring steel.
4. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 1, is characterized in that: the line conveying pipeline (9) is divided into two branch line conveying pipelines below the shaft column (61), one branch line conveying pipeline (92) enters the light path incidence device (1) and the light path emergence device (2), the other branch line conveying pipeline (93) enters the grid gear control device (3) through the connecting pipe (7) and the crude oil conveying pipeline (10), and the shaft column (61) is connected with the crude oil conveying pipeline (10) below through the connecting pipe (7).
5. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 1, is characterized in that: the covering device (4) comprises an umbrella framework capable of stretching and a hydraulic rod connected with an umbrella framework telescopic piece, the hydraulic rod is connected with a hydraulic pump, the hydraulic pump is connected with a controller, the hydraulic pump and the controller are installed in a control grid block control device (3), and the grid block control device (3) is connected with a ground control system.
6. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to any one of claims 1 to 5, characterized in that: one end of each antenna expansion piece (62) is fixed on the shaft column (61), the other end of each antenna expansion piece is fixed on the expansion wall (63), each antenna expansion piece (62) comprises an expansion pipe and a compression spring which are sleeved, the compression springs are positioned in the expansion pipes, and the number of the antenna expansion pieces (62) is four; the telescopic wall (63) is an elastic wall.
7. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 6, is characterized in that: the diameter of the telescopic wall (63) is telescopically adjusted according to the diameter of the oil well (5).
8. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to any one of claims 1 to 5, characterized in that: the light path incidence device (1) comprises a transparent shell (20) and an incidence light path instrument combination, wherein the incidence light path instrument combination comprises a laser (11), a polarizer (12), a photoelastic modulator (13) and a phase shifter (14); the light path emitting device (2) comprises a transparent shell (20) and an emitting light path instrument combination, wherein the emitting light path instrument combination comprises an analyzer (15), a diaphragm (16) and a photoelectric signal converter (17).
9. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to any one of claims 1 to 5, characterized in that: the system also comprises a data acquisition and processing system, wherein the data acquisition and processing system comprises a BNC adapter, a data acquisition card and a data processing device; the data processing device is an electronic computer.
10. The optical detection device for measuring the crude oil water content of the oil well liquid production profile according to claim 1, is characterized in that: the line conveying pipeline (9) comprises a bearing line, a control line, a laser emission control line and a laser conversion electric signal receiving line.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012250744A (en) * | 2011-06-03 | 2012-12-20 | Tatsuno Corp | Liquid feeding apparatus |
| CN202676637U (en) * | 2012-07-29 | 2013-01-16 | 辽宁瑞邦石油技术发展有限公司 | Device for detecting moisture content of crude oil on basis of X-ray measurement technology |
| CN204212775U (en) * | 2014-11-17 | 2015-03-18 | 周福 | Oil well crude oil sampler |
| CN205719948U (en) * | 2016-04-22 | 2016-11-23 | 青岛市光电工程技术研究院 | A kind of crude oil water content detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7834312B2 (en) * | 2005-02-24 | 2010-11-16 | Weatherford/Lamb, Inc. | Water detection and 3-phase fraction measurement systems |
-
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- 2018-06-01 CN CN201810556211.1A patent/CN108956477B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012250744A (en) * | 2011-06-03 | 2012-12-20 | Tatsuno Corp | Liquid feeding apparatus |
| CN202676637U (en) * | 2012-07-29 | 2013-01-16 | 辽宁瑞邦石油技术发展有限公司 | Device for detecting moisture content of crude oil on basis of X-ray measurement technology |
| CN204212775U (en) * | 2014-11-17 | 2015-03-18 | 周福 | Oil well crude oil sampler |
| CN205719948U (en) * | 2016-04-22 | 2016-11-23 | 青岛市光电工程技术研究院 | A kind of crude oil water content detection device |
Non-Patent Citations (1)
| Title |
|---|
| 含油污水光谱特性的研究;杨露 等;《环境科学与管理》;20171130;第42卷(第11期);第146-148页 * |
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