CN114441241A - Equal kinetic energy sampling device and method for oil well produced liquid - Google Patents
Equal kinetic energy sampling device and method for oil well produced liquid Download PDFInfo
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- 238000005070 sampling Methods 0.000 title claims abstract description 179
- 239000007788 liquid Substances 0.000 title claims abstract description 56
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000012530 fluid Substances 0.000 claims abstract description 56
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
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Abstract
The utility model provides an oil well produces kinetic energy sampling device such as liquid, includes top connection, trunk line union, seal gasket, kinetic energy shunt such as, produces liquid export, sample entry, whirl valve, sample pipeline union, sampling bucket, liquid electrode capacitance sensor, contains water on-line measurement system. The invention fundamentally overcomes the influence of different resistance characteristics of each sampling branch and the central pipe on sampling, and realizes the distribution of uniform phase content of gas-liquid two-phase fluid under different flow rates; the sampling flow and the phase content rate have no regulating valve, and the self-adaptive regulation can be carried out without human intervention; the whole device has small volume, simple and compact structure, no moving parts, no need of maintenance and good environmental adaptability.
Description
Technical Field
The invention relates to a device for distributing, sampling and measuring water content of oil well produced liquid multiphase fluid, in particular to a device and a method for taking standard gas phase, oil phase and water phase out of oil-gas-water three-phase fluid in a main pipeline according to the principle of equal kinetic energy, which are used for oil-water sample sampling, associated gas sampling, oil-gas-water component research and analysis and the like at an oil well head.
Background
Oil-gas-water multiphase flow is widely used in petroleum, chemical industry and other industrial fields. In particular, in the production process of an oil field, the produced fluid of the oil well mainly contains oil, associated gas, water and the like, and the flow rate and the distribution of phase content of the produced fluid in a space pipeline belong to the typical multiphase flow problem in the flowing process of a ground pipeline.
The sampling of the oil well is the conventional work of the oil field at present, is one of the main means for measuring the daily liquid water content and the gas content of the oil field, plays a decisive role in the production of crude oil and the subsequent process and operation thereof, and influences the development and management of the oil well. The measurement of the water content of the produced liquid of the oil well is an important work in the production development of the oil field, and the production dynamics of the oil well is analyzed in time by analyzing the change of the water content of the oil well, so that a basis is provided for scientifically formulating the production measures of the oil well. At present, the water content of the oil well is mainly measured by taking out the oil well from the wellhead of the oil well in a manual sampling mode, and the manual sampling is carried out by adopting the oil field enterprise standard Q/SH 10200614-. First, a sampler valve installed in a fluid production line of an oil well is slowly opened to discharge "dead oil" that has been left standing in the sampling line for an excessively long period of time. Secondly, sampling is carried out in the upper stroke, sampling is stopped in the lower stroke, sampling is carried out for multiple times until the sampling quantity requirement is met, and finally the oil sample is sent to a laboratory to test the water content value of the oil sample. In order to analyze whether the manual sampling can reflect the real water content of the oil well, a series of oil wells with different liquid production amounts, different water contents and different oil products are selected to carry out experiments.
The authenticity and the accuracy of oil well sampling mainly lie in the fact whether the key factors such as the fluid flowing state of oil well produced liquid in a pipeline, the sampling time, the structure of a sampler and the like can be really mastered. The flow of oil well produced liquid in the pipeline belongs to oil-gas-water multiphase flow, and the structure of the sampler influences the sampling result at different sampling time. At present, the flowing state of oil, gas and water in a pipeline has many research results and is clear, but the flow pattern change generated in a sampler and a sampling process is difficult to accurately master.
In multiphase flow sampling, separation remains the most reliable and accurate technique at present. For example, Chinese patents ZL200810112558.3, ZL200710046862.8 and the like all adopt large containers as oil-gas-water three-phase separation systems, and then sampling is carried out. The method separates oil-gas-water three-phase fluid in multiphase fluid into single-phase gas, oil and water, and then respectively samples and tests, thereby avoiding the influence of factors such as flow pattern change, flow instability and the like on measurement. However, in actual multiphase fluid measurement, many fluids sometimes cannot be completely separated economically and effectively, and the field sampling brings much trouble. At present, the oil field wellhead liquid production sampler structure influences representativeness and authenticity of a sampled product according to the flowing condition of fluid in a pipe during sampling, the installation mode of the sampler and the like.
In multiphase flow sampling, separation remains the most reliable and accurate technique at present. For example, Chinese patents ZL200810112558.3, ZL200710046862.8 and the like all adopt large containers as oil-gas-water three-phase separation systems, and then sampling is carried out. The method separates oil-gas-water three-phase fluid in multiphase fluid into single-phase gas, oil and water, and then respectively samples and tests, thereby avoiding the influence of factors such as flow pattern change, flow instability and the like on measurement. However, in actual multiphase fluid measurement, many fluids sometimes cannot be completely separated economically and effectively, and the field sampling brings much trouble. In addition, the sampling time can be prolonged infinitely theoretically, a representative sample can be obtained, and the field can not realize such a large sampling container for each oil well in practice. The structure of the sampler is researched and achievements are more at present, the sampler is based on how to safely and conveniently take a fluid sample, and no special research and thinking are made on the influence of the flow pattern and the sampling duration.
Meanwhile, considering the structure and characteristics of the sampler, how to ensure the installation position of the sampling probe and the size of the sampling pipe diameter and overcome the action of the upstream elbow and the downstream flow pattern has important influence on the authenticity of the obtained sample. In addition, whether the opening degree of the sampling valve is reasonable or not, if the opening degree is too small, oil-water separation can occur, if the opening degree is too large, fluid splashing can be caused, and other problems exist, for example, in the technical supervision of the petroleum industry of 'development and application of an automatic sampler for oil well produced liquid', in 2016, 12 th-month, 32 nd-th-period measurement of the water content of the oil well produced liquid, the designed sampler increases a sampling section by increasing a single-section slope or a multi-pore-passage type sampling head, the sampling representativeness is improved, and the authenticity of sampling of the oil well produced liquid is ensured by a residual liquid backflow prevention device, but the problems of flow pattern fluctuation, sampling period and the like are not solved essentially. In the current reports, the influence factors of the water content are mostly sampled from the experimental angle for analysis, and Rotenjump et al analyze the influence factors of the water content manually sampled from the crude oil well through an experimental method in' selection and compilation of academic papers of Youxiu measurement in Shandong province, and optimize sampling process parameters; after experimental research on the sampling of the extra-high water-bearing oil in the oil-gas field ground engineering 2014.09 'crude oil sampling method for extra-high water-bearing oil transfer station', the oil-water distribution in the vertical pipe section is better, and the sampling port is arranged on the vertical section as far as possible. In addition, ZL 200910236673.6 "a sampling device and carry out the system method and application that oil field sampled" is directed at the airtight metal bottle formula sampling system of high sulphur hydrogen sulfide and carbon dioxide gas field design, has solved the airtight sample of gas. A ZL 201910035458.3 well head closed sampling device for a fluid produced by an oil well and a sealing method thereof are mainly used for sampling the fluid produced by the oil well in a manner that a sampling probe is connected with a metal container. ZL 201820095420.6 oil well head sampling device convenient to use, the inside with petroleum flow to junction box and connecting cylinder at the in-process of petroleum extraction that the device can be better, solves the problem that current oil well head sampling device is not convenient for use. ZL 201710776668.9 is an oil wellhead sampling device, a pressure reducing device and a sampling method, and provides the oil wellhead sampling device, the pressure reducing device and the sampling method. ZL201510107832.8 oil well head sampling device can realize liquid and gas separation under the sampling valve condition of opening completely, can not splash, avoids polluted environment or injures people, and is fast, intensity of labour is little, safer, more environmental protection. ZL201610046145.4 a well head sampling method of oil gas well, this method need with the help of the stratum fluid that the sampling equipment will flow in the horizontal direction, become vertical flow through the sampling equipment, pass through a filtration mixing arrangement in the vertical direction, realize comparatively even distribution, flow with inhomogeneous mobile fluid, after even flow, adopt telescopic sampling probe, respectively take a certain amount of sample in the different positions of circulation passageway, until filling up special appearance bottle, the influence of sampling fluid flow pattern to sample authenticity has been considered in this patent, but adopt the mode of sampling probe, can't guarantee can both obtain standard fluid appearance problem under most circumstances.
In conclusion, aiming at the problems of large water content fluctuation, poor sampling representativeness, large labor intensity of sampling personnel, low efficiency and the like existing in the manual sampling of the produced liquid of the oil well at present, the influences of the produced liquid flow pattern, the sampling time, the structure of a sampler and the like need to be considered, and a novel oil well produced liquid sampling device and method are designed.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention aims to provide a device for distributing and sampling oil well produced liquid multiphase fluid, in particular to a device and a method for taking out standard gas phase, oil phase and water phase from oil-gas-water three-phase fluid in a main pipeline in a rotational flow shaping, multi-equal-division and equal-kinetic energy mode, which are used for sampling oil-water sample at an oil well mouth, associated gas sampling, research and analysis of oil-gas-water components and the like, and avoid the problem of insufficient representativeness of the sampled fluid caused by the influence factors such as the produced liquid flow pattern, the sampling time and the like.
The device mainly comprises an upper joint, a cyclone, a main pipeline movable joint, a sealing gasket, an equipotent flow divider, a produced liquid outlet, a sampling inlet, a cyclone valve, a sampling resistance valve, a sampling branch joint, a sampling pipeline movable joint, a 1# sampling barrel, a 2# sampling barrel, a sampling barrel emptying floater structure, a sampling barrel emptying gate, a liquid electrode capacitance sensor, an online water content metering system and the like.
The three-phase flow fluid of the oil well liquid production from the upstream enters an upper joint and a central pipe, is rectified by a swirl vane to become uniform annular flow with a gas phase at the center, an oil ring in the middle and a water ring attached to the wall, is split by adopting a plurality of equally-divided packing and separating plates, and is separated in the pipe according to the equal kinetic energy mode of resistance matching, so that the oil-gas-water phase content distributed to a sampling branch and the water-phase content of the main pipe are the same, and meanwhile, the flow of the sampling branch pipe is controlled by a sampling resistance valve, so that the sampling time length is prolonged as much as possible under the condition that the size of a sampling barrel is controllable, and the standard sample target under the condition of obtaining long-period pulsating flow is achieved.
The rotational flow blades for rotational flow shaping are combined by 3-8 rotational flow blades with the same structure according to the way of sinking at an included angle of 15-45 degrees along the axial direction of the pipeline, a central shaft is arranged, the rotational flow blades are semi-elliptical, the outer edges of the rotational flow blades are superposed with the inner wall of the pipeline, the height of the blades is less than 0.5-0.7 time of the diameter of the inlet section of the central pipe, and the blades are fixed in the circular pipeline. Because no gap is formed between the outer edge of the blade and the central pipe wall, the gas-liquid two-phase fluid is forced to rotate along the direction formed by the blade, and the liquid is thrown to the pipe wall under the action of centrifugal force, so that an annular flow pattern with a gas core in the middle and a liquid film attached to the pipe wall is formed. Therefore, the swirl vanes rectify the flow pattern such as laminar flow, wavy flow, and slug flow from upstream into an annular flow having a uniform liquid film thickness.
The sampling resistance valve is a device for controlling gas-liquid two-phase flow at a sampling outlet, and a critical flow nozzle structure is adopted to control the sampled gas-liquid two-phase flow and eliminate the influence of downstream parameter fluctuation on distribution.
The equal kinetic energy flow divider can keep the original kinetic energy or flow velocity unchanged when gas-liquid two-phase fluid enters each separation clapboard, so that under the condition that the velocity and the phase content are symmetrically distributed about an axis, if the flow area of each flow channel is also divided around the axial axis, the flow of each phase distributed to each flow channel is directly proportional to the divided flow cross section. The sampling device is divided into a plurality of symmetrical flow channels of 12-36 according to the dividing number, wherein a part of the symmetrical flow channels are connected with the sampling channel, and the flow rate flowing to the sampling is controlled by the sampling resistance valve on the symmetrical flow channels. Wherein the thickness and the wall thickness of the separating plate are 0.5mm-2mm, and the length is 3-4 times of the diameter of the pipeline.
The equipotent energy flow divider is as shown in fig. 3, and divides the main pipeline into 12 independent channels, and the incoming flow is a circular flow, and has an axial symmetry property, and the sampling resistance valve in fig. 3 is used to balance the resistance of the main pipeline and the dividing pipeline, so that the incoming flow uniformly flows through the 12 channels. 1 of the 12 passages communicates with the ring chamber in a cross-sectional view as shown in FIG. 3, wherein fluid enters the ring chamber and is diverted therefrom as 1/12 fluid. When the flow pattern of the fluid is axisymmetric, the divided fluid can represent the property of the total fluid, and at this time, the flow rate of the measured fluid in the main pipe can be calculated according to the above formula as long as the flow rate of the divided fluid is measured.
The two-phase incoming flow of the axisymmetric uniform annular flow is artificially rectified into an annular flow pattern which is symmetric along a central axis, namely an equal-thickness liquid film ring which is uniformly distributed along a circular wall surface and an air column core which is concentrated at the center of a circular pipeline.
The sampling resistance valve is used for balancing the flow resistance of the central pipe and the resistance of the sampling pipe, and ensures that the pressure difference of the gas-liquid mixture is in resistance matching with the pressure difference of the gas-liquid mixture of the branch pipe in the flowing process of the main pipe, thereby ensuring that the central pipe and the branch pipe stably flow.
The water-containing data acquisition and processing system is a measuring system for the height of a water phase in produced liquid, which is developed by utilizing the principles that the water phase in the produced liquid is conductive and an oil phase is not conductive. The capacitance value of the capacitance sensor belongs to a variable-area capacitance sensor in the working principle, and is greatly enhanced compared with the capacitance value of the capacitance sensor in the traditional method.
The invention fundamentally overcomes the influence of different resistance characteristics of each sampling branch and the central pipe on the phase content and flow distribution of the sampling, and realizes the distribution of uniform phase content of gas-liquid two-phase fluid under different flows; the sampling flow and the phase content rate have no regulating valve, and the self-adaptive regulation can be carried out without human intervention; the whole device has small volume, simple and compact structure, no moving parts, no need of maintenance and good environmental adaptability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an isokinetic sampling apparatus for producing fluids at the wellhead of an oil well according to the present invention;
FIG. 2 is a schematic illustration of an isokinetic energy flow divider;
FIG. 3 is a schematic view of a sample resistance valve configuration;
FIG. 4 is a schematic view of the cyclone structure;
FIG. 5 is a schematic view of the flow pattern after the rotational flow shaping;
FIG. 6 is an aqueous in-line test system.
The reference numbers are as follows:
1. the system comprises an upper joint 2, a cyclone 3, a main pipeline movable joint 4, a sealing gasket 5, an equal kinetic energy flow divider 6, a produced liquid outlet 7, a sampling inlet 8, a cyclone valve 9, a sampling resistance valve 10, a sampling branch joint 11, a sampling pipeline movable joint 12.1# sampling barrel 13.2# sampling barrel 14, a sampling barrel emptying floater structure 15, a sampling barrel emptying gate 16, a capacitance type water-containing sensor 17 and a water-containing data acquisition and processing system;
5-1, 5-2 of a main splitter pipeline, 5-3 of splitter baffles, 5-4 of a splitting channel, 5-5 of a sampling channel, 5-6 of a guide cone, and 5-7 of sampling channels through baffles;
9-1, 9-2 of an inlet of a sampling resistance valve, 9-3 of a throat, 9-4 of a diffusion section of the sampling resistance valve and an outlet of the sampling resistance valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The oil well mouth liquid production equal kinetic energy sampling device is shown in figure 1 and mainly comprises an upper joint, a cyclone, a main pipeline movable joint, a sealing gasket, an equal kinetic energy flow divider, a liquid production outlet, a sampling inlet, a cyclone valve, a sampling resistance valve, a sampling branch joint, a sampling pipeline movable joint, a 1# sampling barrel, a 2# sampling barrel, a sampling barrel emptying floater structure, a sampling barrel emptying gate and the like. After oil-gas-water production-liquid two-phase flow from an upstream pipeline enters a cyclone 2 through an upper joint 1, the flow pattern is changed under the action of the cyclone centrifugal force of cyclone blades in the cyclone 2, the traditional complex oil-gas-water flow pattern is changed into axisymmetric uniform annular flow with gas nuclei, oil rings and water films distributed along the wall, the flow pattern can maintain a certain distance in a downstream pipe and flows through a main pipeline movable joint 4 and a sealing gasket 5 and other structures until the flow pattern enters an equal kinetic energy flow divider 5, the flow pattern is kept in the equal kinetic energy flow divider 5 under the condition that the liquid films flow along the wall, the water rings and the gas nuclei are in the center, the number ratio of a branch channel to a central pipe channel is selected through the division of symmetrical flow channels according to the flow ratio, and the oil-gas-water three-phase content ratio under different division flows is equal. The three phase product fluid from the isokinetic splitter 5 flows in both directions with uniform phase content achieved by the isokinetic energy, and a portion continues downstream along the product outlet 6 in the tube. The other part of the oil-gas-water three-phase fluid flowing to the sampling pipeline enters a rotary flow valve 8-1 and a sampling resistance valve 9 through a sampling inlet 7 of a sampling pipe arranged on the equal kinetic energy flow divider 5 and flows to a sampling branch joint 10, the cyclone valve 8-2 or the cyclone valve 8-3 after the branch joint 10 is opened and closed enters the fully-closed sampling cylinder, wherein the rotary flow valve 8-2 and the rotary flow valve 8-3 are connected through a sampling pipeline union 11 and respectively enter a No. 1 sampling barrel 12 and a No. 2 sampling barrel 13, the upper part of each sampling barrel is provided with a sampling barrel emptying floater structure 14 and a sampling barrel emptying gate 15, so that when the sampling barrel is full, the emptying floater structure 14 is automatically closed and cannot be sprayed out, and when the sampling barrel needs to be dismounted and taken for testing, can be disconnected through sampling line union 11 and vented through sampling drum vent gate 15. Wherein set up the purpose of 1 # sampling bucket 12 and 2# sampling bucket 13, can prolong the sample time, increase the representativeness of sample, reduce the sampling error that artifical frequent operation brought simultaneously. The capacitance type water-containing sensor 16 measures the height of the water in the produced liquid by adopting the liquid electrode capacitance principle, then the acquisition signal sensing water-containing data acquisition and processing system 17 carries out operation, and displays the volume water content at the moment.
The medium kinetic energy flow divider structure is shown in figure 2 and mainly comprises a flow divider main pipeline, a flow divider partition plate, a flow dividing channel, a sampling channel, a flow guide cone, a sampling channel partition plate, a sampling hole and the like. After uniform annular flow fluid after upward flow shaping enters a main flow divider pipeline 5-1, the uniform annular flow fluid firstly enters a flow divider partition plate 5-2 under the guidance of a flow guide cone 5-5, and then is sealed into a plurality of equal parts, each equal part enters a flow divider channel 5-3 according to respective division, wherein a sampling channel 5-4 is communicated with a sampling channel 5-7, and the rear end of the sampling channel 5-4 is sealed by a sampling channel partition plate 5-6, so that the fluid is ensured to enter the sampling channels 5-4 and 5-7 only and flow to the sampling pipeline.
FIG. 3 shows a structure of a sampling resistance valve, which mainly comprises an inlet of the sampling resistance valve, a throat, a diffusion section of the sampling resistance valve, and an outlet of the sampling resistance valve. The sampling inlet flow enters the sampling resistance valve inlet 9-1, then passes through the throat 9-2, performs pressure recovery in the sampling resistance valve diffusion section 9-3, and then flows out from the sampling resistance valve 9-4 outlet, and the flow control is realized by the following formula:
q-mass flow rate; c-flow coefficient; a-flow area; ρ -fluid density; Δ P-differential fluid pressure.
The critical flow nozzle mode is adopted by the sampling resistance valve, because the diameter of the throat part of the critical nozzle is far smaller than that of the main pipe section, the flowing fluid reaches the local sonic velocity at the throat part of the critical nozzle to form critical flow, and the rear expansion section of the critical flow nozzle is in a nozzle streamline shape, so that the resistance loss is reduced.
FIG. 4 is a structure of a rotational flow shaping blade, which is composed of 3-8 rotational flow blades with the same structure and the size of an intersection angle of 30-60 degrees and is fixed in a circular pipeline.
FIG. 5 shows a flow pattern after swirling flow shaping, in which a swirling flow blade rectifies a stratified flow, a wavy flow, a slug flow, an equal flow pattern from upstream into an annular flow having a uniform liquid film thickness.
FIG. 6 shows an online water content testing system, which can realize on-site monitoring of water content in oil and water samples by means of liquid electrode capacitance. The liquid electrode capacitance type sensor utilizes the conductivity of water, and uses the water body contacted by the probe as one pole of a capacitor to measure the water holding rate. The water-containing data acquisition and processing system is connected with the anode of the liquid capacitance electrode sensor on one hand and is connected with the cathode of the liquid capacitance electrode sensor on the other hand. The capacitance value of the capacitance sensor belongs to a variable-area capacitance sensor in the working principle, and is enhanced to a certain extent compared with the capacitance value of the capacitance sensor in the traditional method. The test principle is as follows:
where ε is the dielectric constant of the insulating layer, a is the electrode pad length, b is the electrode pad width, l is the actual water level height, and d is the thickness of the insulating layer applied over the anode. As can be seen from the above formula, since the polyimide coating applied to the anode is only 0.2-0.5mm and d is very small, the capacitance of this sensor is very large (on the order of nano farads) and the sensitivity is very high. The structural parameters of the water content sensor in the instrument are optimized through simulation experiments and entity experiments, the water content sensor has sensitive response to the change of the water retention rate under various flow patterns, and has good repeatability and consistency. Under the indoor experiment condition, the liquid level height that different capacitance values correspond has been established, and the volume moisture content just can be known according to the volume of sampling bucket and the volume ratio that water occupied this moment to can provide reliable moisture content information, can satisfy the on-line measuring of oil field ground output liquid moisture content.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides an oil well production fluid isokinetic energy sampling device which characterized in that: the device comprises an upper connector, a main pipeline movable connector, a sealing gasket, an equipotent flow divider, a produced liquid outlet, a sampling inlet, a cyclone valve, a sampling pipeline movable connector, a sampling barrel, a liquid electrode capacitance sensor and a water content online metering system.
2. The isokinetic sampling device of oil well production fluid of claim 1, wherein: also includes a swirler.
3. An oil well fluid production isopower sampling device as claimed in claim 1 or 2, wherein: the sampling pipeline movable joint is arranged on the sampling pipeline, and a sampling resistance valve is arranged on the sampling pipeline.
4. The isokinetic sampling device for oil well produced fluids of claim 1 wherein: the sampling bucket has a plurality of.
5. The isokinetic sampling device of oil well production fluid of claim 4, wherein: there are 2 sampling buckets.
6. The isokinetic sampling device of oil well production fluid of claim 2, wherein: the swirler includes swirl vanes.
7. The isokinetic sampling device of oil well production fluid of claim 6, wherein: the swirl blades are combined by a plurality of swirl blades with the same structure according to the way of sinking at an included angle of 15-45 degrees along the axial direction of the pipeline.
8. The isokinetic sampling device for oil well production fluid of claim 7, wherein: the number of the swirl vanes is 3-8.
9. A sampling method using the isokinetic sampling device for oil well produced fluid according to any of claims 1 to 8, characterized in that: and the water content monitoring of the oil-water sample on site is realized through the liquid electrode capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199550.2A CN114441241A (en) | 2020-10-30 | 2020-10-30 | Equal kinetic energy sampling device and method for oil well produced liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199550.2A CN114441241A (en) | 2020-10-30 | 2020-10-30 | Equal kinetic energy sampling device and method for oil well produced liquid |
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| CN115453142A (en) * | 2022-09-01 | 2022-12-09 | 吉林大学 | Pipeline crude oil liquid measuring device |
| CN116298220A (en) * | 2023-04-27 | 2023-06-23 | 凯特智能控制技术有限公司 | Oxygen content monitoring equipment of oil gas storage and transportation system |
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| CN116298220B (en) * | 2023-04-27 | 2023-09-01 | 凯特智能控制技术有限公司 | Oxygen content monitoring equipment of oil gas storage and transportation system |
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