CN109184665B - Automatic measuring device and measuring method for wellhead liquid water content - Google Patents
Automatic measuring device and measuring method for wellhead liquid water content Download PDFInfo
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- CN109184665B CN109184665B CN201811314198.5A CN201811314198A CN109184665B CN 109184665 B CN109184665 B CN 109184665B CN 201811314198 A CN201811314198 A CN 201811314198A CN 109184665 B CN109184665 B CN 109184665B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract description 7
- 230000037452 priming Effects 0.000 abstract description 7
- 239000010779 crude oil Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 41
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000013208 measuring procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an automatic measuring device and a measuring method for the water content of wellhead liquid, comprising the following steps: the device comprises a material pipe, a high-pressure self-priming pump, a measuring cavity, a buffer tank, a detector and a jet pump; the material pipe with high pressure self priming pump links to each other, high pressure self priming pump with the measurement chamber links to each other, the measurement chamber set up in buffer tank bottom, just the measurement chamber with buffer tank bottom UNICOM, the detector run through set up in buffer tank and measurement intracavity portion, wherein the probe of detector stretches to the measurement intracavity, the jet pump with the buffer tank links to each other. Aiming at the problem that the water content of the produced fluid of the wellhead of the oil well is difficult to measure in the prior art, the invention realizes the purpose of measuring the water content of the produced fluid into data and improves the working efficiency of measuring the yield of crude oil.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to an automatic measuring device and a measuring method for water content of wellhead liquid.
Background
At present, in oil production wells of all oil fields in the world, the oil yield and the oil production rate are the most important basic data of oil field production, most of oil fields in China adopt secondary and tertiary oil displacement operation, and secondary oil production adopts a water flooding technology and tertiary oil recovery adopts a ternary composite flooding technology. Large-scale oil fields such as Daqing oil field, jilin oil field, tarim oil field and victory oil field in China are subjected to deep oil extraction by adopting similar technologies due to ageing of the oil fields.
Under the condition of secondary and tertiary oil displacement operation, the produced product is a three-phase flow (gas phase, water phase and oil phase), and the possible components in the gas phase are H 2 S、CO 2 And low carbon number hydrocarbons, etc., the water phase contains oil displacement chemicals, and the oil phase refers to crude oil. In order to monitor the water yield of an oil well in real time, each oil field needs to accurately grasp the oil yield of the oil well, and the water content of the produced fluid of the oil well must be measured periodically.
However, after the three-phase flow is transferred from underground to the ground, the morphology is changed, oil, water and gas are rapidly separated, gas overflows from the bulk phase, the water phase is sunk, the oil phase floats up, the water phase contains uncertain oil in the form of oil in water, the oil phase contains uncertain oil in the form of water in oil, and the oil content in the form of oil in water and the water content in the water in oil are dynamically changed, so that the measurement of the yield of crude oil is very difficult. The oil field has no simple and reliable method for testing the oil-water ratio, so that the data-making work of the oil field is difficult to progress, and particularly the working condition measurement difficulty of high gas content and high water content in the produced liquid is more difficult.
Therefore, the research on an automatic measuring device and a measuring method for the water content of wellhead fluid are problems which are needed to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides an automatic measuring device and a measuring method for the water content of wellhead liquid, which aim at solving the problem that the water content of the produced liquid of an oil well wellhead is difficult to measure in the prior art, and realize the purpose of measuring the water content of the produced liquid into data.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an automatic measurement device for water content of wellhead fluid, comprising: the device comprises a material pipe, a high-pressure self-priming pump, a measuring cavity, a buffer tank, a detector and a jet pump;
the material pipe with high pressure self priming pump links to each other, high pressure self priming pump with the measurement chamber links to each other, the measurement chamber set up in buffer tank bottom, just the measurement chamber with buffer tank bottom UNICOM, the detector run through set up in buffer tank and measurement intracavity portion, wherein the probe of detector stretches to the measurement intracavity, the jet pump with the buffer tank links to each other.
Preferably, a static mixer is arranged in the material pipe, a sample detection extraction port is arranged on the pipe wall of the material pipe, and the sample detection extraction port is connected with the high-pressure self-priming pump.
Preferably, electromagnetic valves are arranged between the material pipe and the high-pressure self-priming pump and between the high-pressure self-priming pump and the measurement cavity, and a check valve is further arranged at the rear end of the electromagnetic valve between the high-pressure self-priming pump and the measurement cavity.
It should be noted that: the high-pressure self-priming pump is connected with the electromagnetic valve, the electromagnetic valve is connected with the check valve, and the check valve is connected with the measuring cavity.
Preferably, the probe of the detector is a sensor, the probe is located in the measuring cavity, two cleaning spray heads are arranged on the cavity wall of the measuring cavity, the two cleaning spray heads are oppositely arranged, and the cleaning spray heads are connected with the output end of the jet pump.
Preferably, one end of the material pipe is a material input end, the other end of the material pipe is a material output end, a heating element, a temperature sensor and a pressure sensor are arranged in the buffer tank, an overflow port and a feed port are arranged on the buffer tank, the overflow port is connected with the material output end of the material pipe, and the feed port is connected with the input end of the jet pump;
preferably, an electromagnetic valve is arranged between the injection pump and the buffer tank, and an electromagnetic valve and a check valve are sequentially arranged between the injection pump and the measurement cavity.
The automatic measurement method of the water content of the wellhead liquid specifically comprises the following steps:
step one: the materials from the oil product conveying pipeline system enter a material pipe to be subjected to state adjustment through a static mixer;
step two: the high-pressure self-priming pump fully mixes and pressurizes the sample and conveys the sample to the measuring cavity, and the probe in the measuring cavity detects the wellhead fluid by adopting a high-frequency resonance circuit method;
step three: the detected sample enters a buffer tank, and the liquid level of the sample in the buffer tank exceeds an overflow port and then automatically overflows to a material pipe and returns to an oil product conveying pipeline system;
step four: the sample is heated after entering the buffer tank, and the heated sample is pumped out by the feed inlet through the jet pump and is conveyed to the cleaning nozzle to wash the probe.
Preferably, the static mixer for the sample comprises 1-3 static mixers, and the mixing unit form in the static mixer is selected according to the flow rate and the inlet pressure of the inlet; and the sample detection extraction port is arranged at the tail end of the mixing unit of the sample flowing through the static mixer.
Preferably, the specific method in the second step is as follows: the probe continuously outputs 3-5 MHz rays to pass through the sample, receives the feedback ray frequency and attenuation voltage of the sample, and the feedback ray frequency and attenuation voltage are used as characteristic sample information, are recognized by a lower computer of the measurer and then are converted into digital signals, and are communicated and controlled by an upper computer.
Compared with the prior art, the automatic measuring device and the measuring method for the water content of the wellhead liquid provided by the invention have the beneficial technical effects that:
according to the invention, the high-pressure self-priming pump sucks out the sample and the detector is used for directly detecting the water content of the sample, so that the water content can be accurately, quickly and conveniently measured, the problem of difficult water content measurement in the prior art is solved, the crude oil yield of an oil well is dataized and intelligentized, the fluctuation of the oil well yield can be timely found, the hysteresis of the test by adopting the traditional test method is avoided, and the measurement efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic view of a material pipe structure provided by the invention;
FIG. 3 is a schematic diagram of the structure of the detector, buffer tank and measurement chamber provided by the invention;
FIG. 4 is a schematic diagram showing the positional relationship between a probe and a cleaning nozzle according to the present invention;
FIG. 5 is a schematic diagram showing the positional relationship between a measuring cavity and a material pipe according to the present invention;
1-detector, 2-measuring cavity, 3-check valve, 4-material pipe, 5-solenoid valve, 6-high pressure self priming pump, 7-jet pump, 8-buffer tank, 9-sample detection extraction port, 10-probe, 11-heating element, 12-feed inlet, 13-cleaning nozzle, 14-overflow port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention discloses an automatic measurement device for wellhead fluid water content, which comprises: the device comprises a material pipe 4, a high-pressure self-priming pump 6, a measuring cavity 2, a buffer tank 8, a detector 1 and a jet pump 7;
the material pipe 4 with high-pressure self priming pump 6 links to each other, high-pressure self priming pump 6 with measure chamber 2 and link to each other, measure chamber 2 set up in buffer tank 8 bottom, just measure chamber 2 with buffer tank 8 bottom UNICOM, detector 1 run through set up in buffer tank 8 and measure the intracavity portion 2, wherein the probe 10 of detector 1 stretches into in the measurement chamber 2, jet pump 7 with buffer tank 8 links to each other.
Specifically, the static mixer for the sample comprises 1-3 static mixers, the mixing unit form in the static mixer is selected according to the inlet flow and inlet pressure, and one or two of SU type, SK type and SV type can be selected.
Further, as shown in fig. 2, a static mixer is disposed inside the material pipe 4, a sample detection extraction port 9 is disposed on a pipe wall of the material pipe 4, and the sample detection extraction port 9 is connected with the high-pressure self-priming pump 6.
Further, electromagnetic valves 5 are respectively arranged between the material pipe 4 and the high-pressure self-priming pump 6 and between the high-pressure self-priming pump 6 and the measurement cavity 2, and a check valve 3 is further arranged at the rear end of the electromagnetic valve 5 between the high-pressure self-priming pump 6 and the measurement cavity 2.
Further, as shown in fig. 3, one end of the material pipe 4 is a material input end, the other end is a material output end, the probe 10 of the detector 1 is a sensor, the probe 10 is located in the measurement cavity 2, two cleaning nozzles 13 are arranged on the cavity wall of the measurement cavity 2, the two cleaning nozzles 13 are oppositely arranged, and the cleaning nozzles 13 are all connected with the output end of the jet pump 7.
Specifically, the diameter of the probe 10 is 10.0-16.0 mm, the length is 15.mm-50.0 mm, the upper end of the probe 10 is fixed by adopting a stainless steel pipe, the stainless steel pipe is connected with a flange, the stainless steel pipe and the probe 10 are measuring components, and the components are vertically arranged; the distance between the outer wall of the probe 10 and the inner wall of the measuring cavity 2 is 1.5 mm-3.5 mm.
Further, a heating element 11, a temperature sensor and a pressure sensor are arranged in the buffer tank 8, an overflow port 14 and a feed port 12 are arranged on the buffer tank 8, the overflow port 14 is connected with a material output end of the material pipe 4, and the feed port 12 is connected with an input end of the jet pump 7;
specifically, as shown in FIG. 4, the buffer tank 8 is elliptical, and the volume of the buffer tank 8 is 2000.0-5000.0 cm 3 。
Further, an electromagnetic valve 5 is arranged between the injection pump 7 and the buffer tank 8, and the electromagnetic valve 5 and the check valve 3 are sequentially arranged between the injection pump 7 and the measurement cavity 2.
The automatic measurement method of the water content of the wellhead liquid specifically comprises the following steps:
step one: the materials from the oil product conveying pipeline system enter a material pipe 4 to be subjected to state adjustment through a static mixer;
step two: the high-pressure self-priming pump 6 fully mixes and pressurizes the sample and conveys the sample to the measuring cavity 2, and the probe 10 detects the wellhead fluid in the measuring cavity 2 by adopting a high-frequency resonance circuit method;
further, a sample detection extraction port 9 is provided at the end of the mixing unit where the sample flows through the static mixer. The sample is stirred and mixed at high speed by blades in a high-pressure self-priming pump 6, and gas phase, water phase and oil phase in the sample are fully mixed; the test sample is acted by a high-pressure self-priming pump 6, and the pressure is increased by 0.1-0.3 MPa;
further, the specific method in the second step is as follows: the probe 10 continuously outputs 3-5 MHz rays to pass through the sample, receives the feedback ray frequency and attenuation voltage of the sample, and the feedback ray frequency and attenuation voltage are used as characteristic sample information, are recognized by a lower computer of the measurer and then are converted into digital signals, and are communicated and controlled by an upper computer.
Step three: the detected sample enters a buffer tank 8, and the liquid level of the sample in the buffer tank 8 exceeds an overflow port 14 and then automatically overflows to a material pipe 4 and returns to an oil product conveying pipeline system;
step four: after the sample enters the buffer tank 8, the sample is heated, the heated sample is pumped out by the feed inlet 12 through the jet pump 7 and is conveyed to the cleaning nozzle 13 to flush the probe 10.
Specifically, the jet pump 7 extracts heating liquid from the feed inlet 12 of the buffer tank 8, the liquid temperature is 55.0-65.0 ℃, the cleaning material flow scours the probe 10 and then enters the buffer tank 8 again to be heated and extracted for flushing, the flushing time is 0.5-1.0 hour, and the measuring procedure is carried out after the flushing procedure is completed.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An automatic measurement device for water content of wellhead fluid, which is characterized by comprising: the device comprises a material pipe (4), a high-pressure self-priming pump (6), a measuring cavity (2), a buffer tank (8), a detector (1) and a jet pump (7);
the material pipe (4) is connected with the high-pressure self-priming pump (6), the high-pressure self-priming pump (6) is connected with the measurement cavity (2), the measurement cavity (2) is arranged at the bottom of the buffer tank (8), the measurement cavity (2) is communicated with the bottom of the buffer tank (8), the detector (1) is arranged in the buffer tank (8) and the measurement cavity (2) in a penetrating way, a probe (10) of the detector (1) extends into the measurement cavity (2), and the jet pump (7) is connected with the buffer tank (8);
a static mixer is arranged in the material pipe (4), a sample detection extraction port (9) is arranged on the pipe wall of the material pipe (4), and the sample detection extraction port (9) is connected with the high-pressure self-priming pump (6);
the probe (10) of the detector (1) is a sensor, the probe (10) is positioned in the measuring cavity (2), two cleaning spray heads (13) are arranged on the cavity wall of the measuring cavity (2), the two cleaning spray heads (13) are oppositely arranged, and the cleaning spray heads (13) are connected with the output end of the jet pump (7);
one end of the material pipe (4) is a material input end, the other end of the material pipe is a material output end, a heating element (11), a temperature sensor and a pressure sensor are arranged in the buffer tank (8), an overflow port (14) and a feed port (12) are arranged on the buffer tank (8), the overflow port (14) is connected with the material output end of the material pipe (4), and the feed port (12) is connected with the input end of the jet pump (7);
the method for measuring the water content of the wellhead liquid by the automatic measuring device comprises the following specific steps of:
step one: the materials from the oil product conveying pipeline system enter a material pipe (4) to be subjected to state adjustment through a static mixer;
step two: the high-pressure self-priming pump (6) fully mixes and pressurizes the sample and conveys the sample to the measuring cavity (2), and the probe (10) detects the wellhead fluid in the measuring cavity (2) by adopting a high-frequency resonance circuit method;
step three: the detected sample enters a buffer tank (8), and the liquid level of the sample in the buffer tank (8) exceeds an overflow port (14) and then automatically overflows to a material pipe (4) and returns to an oil product conveying pipeline system;
step four: after the sample enters the buffer tank (8), the sample is heated, the heated sample is pumped out by the feed inlet (12) through the jet pump (7), and is conveyed to the cleaning nozzle (13) to flush the probe (10).
2. The automatic measurement device for the water content of wellhead fluid according to claim 1, wherein,
the electromagnetic valve (5) is arranged between the material pipe (4) and the high-pressure self-priming pump (6), and between the high-pressure self-priming pump (6) and the measurement cavity (2), and the check valve (3) is further arranged at the rear end of the electromagnetic valve (5) between the high-pressure self-priming pump (6) and the measurement cavity (2).
3. The automatic measurement device for the water content of wellhead fluid according to claim 1, wherein,
an electromagnetic valve (5) is arranged between the jet pump (7) and the buffer tank (8), and the electromagnetic valve (5) and the check valve (3) are sequentially arranged between the jet pump (7) and the measuring cavity (2).
4. The automatic measurement device for the water content of wellhead fluid according to claim 1, wherein,
the static mixer comprises 1-3 static mixers, and the mixing unit form in the static mixer is selected according to the flow rate and the inlet pressure of an inlet; and a sample detection extraction port (9) is provided at the end of the mixing unit where the sample flows through the static mixer.
5. The automatic measurement device for the water content of wellhead fluid according to claim 1, wherein the specific method in the second step is as follows: the probe (10) continuously outputs 3-5 MHz rays to pass through the sample, receives the feedback ray frequency and attenuation voltage of the sample, and the feedback ray frequency and the attenuation voltage are used as characteristic sample information, are identified by the lower computer of the measurer and then are converted into digital signals, and are communicated and controlled by the upper computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811314198.5A CN109184665B (en) | 2018-11-06 | 2018-11-06 | Automatic measuring device and measuring method for wellhead liquid water content |
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| CN201811314198.5A CN109184665B (en) | 2018-11-06 | 2018-11-06 | Automatic measuring device and measuring method for wellhead liquid water content |
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| CN109838228B (en) * | 2019-02-26 | 2019-09-24 | 东北石油大学 | Ultra-high water-containing grease holdup measurement method based on thermal trace |
| CN109869136B (en) * | 2019-04-11 | 2020-07-24 | 燕山大学 | Land single-wellhead oil-water two-phase flow resistance capacitance water content measuring device |
| CN110965986B (en) * | 2019-11-01 | 2023-10-31 | 南京瑞路通达信息技术有限公司 | Measuring device and method for three-phase flow of produced liquid of oilfield production well |
| CN110965985B (en) * | 2019-11-01 | 2024-01-30 | 南京瑞路通达信息技术有限公司 | Automatic measuring device and method for mass flow of produced liquid of oilfield production well |
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