CN104931536A - Remote verifying type crude oil water content monitoring system and verifying method thereof - Google Patents
Remote verifying type crude oil water content monitoring system and verifying method thereof Download PDFInfo
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- CN104931536A CN104931536A CN201510420997.0A CN201510420997A CN104931536A CN 104931536 A CN104931536 A CN 104931536A CN 201510420997 A CN201510420997 A CN 201510420997A CN 104931536 A CN104931536 A CN 104931536A
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Abstract
The invention provides a remote verifying type crude oil water content monitoring system and a verifying method thereof. The system comprises a collecting pipe, an automatic gas tripping unit, a water content analyzer, a wireless transmission module, a wireless reception module and a data processing module. A gas conveying pipe is arranged on the upper portion of the automatic gas stripping device, and a liquid output pipe is arranged at the bottom of the automatic gas stripping device. The water content analyzer is installed on the liquid output pipe. A connecting pipe is provided with a branch. The gas conveying pipe and the branch are connected with the collecting pipe. The water content analyzer, the wireless reception module, the wireless transmission module and the data processing module are sequentially connected. In the verifying process, crude oil is sampled on site, corresponding curves are obtained according to corresponding voltage values and laboratory reports, and the curve slope of each section is obtained; the curve slope of each section is transmitted to the water content analyzer in a wireless mode, and the water content analyzer receives and stores the curve slopes. The system carries out gas stripping in the crude oil water content monitoring process, the problem of detection errors caused by wall hanging is solved, the detection precision is improved, and the system is particularly suitable for occasions with the high gas content, and can achieve remote verification.
Description
Technical field
The present invention relates to a kind of system also can carrying out long-range verification for carrying out water cut monitor to the crude oil of oil well, belong to crude oil water containing monitoring technical field.
Background technology
The well stream thing of oil well production comprises oil, gas, water and graininess solid, in crude oil, water percentage is an important monitoring project, generally detected by water in oil analyzer, the principle of water in oil analyzer has multiple, is generally divided into four kinds: electromagnetic wave, capacitance method, densimetry and rays method.Usual Electromagnetic Wave Method be used for measure High water cut, capacitance method be used for measure low moisture, rays method is owing to employing with the present state control of radioactive source, and densimetry is the definite density knowing pure oil and pure water in advance.Chinese patent literature CN2383068 discloses one " raw oil water content monitor ", containing measuring channel, gamma ray projector, transmission detectors and scattering detector, separately also in measuring channel, is provided with mozzle, in measuring channel liquid input section, be also provided with stirring vane.CN202153216U disclosed " a kind of crude oil water containing detection experiment equipment ", comprises cabinet, is provided with compressor, condenser, submersible pump, stainless steel water tank and crude oil air mix facilities in cabinet.
Existing water in oil analyzer major part uses at product oil or in the occasion that multi-purpose station etc. is more stable, not gassiness or containing few gas, therefore most of analyzer of water content can use in the crude oil of these occasions.But because in the crude oil of the occasion such as near test satellite location or well head, gassiness is many, existing water in oil analyzer is used to carry out containing water gaging, larger error can be produced to measurement result, and the easy wall built-up of crude oil, the measuring accuracy of different time sections has certain deviation.So existing water in oil analyzer is difficult to the moisture accurately measuring the more occasion Crude Oil of the gassiness such as well head or test satellite location.
CN201449390U discloses one " crude oil water-bearing detection apparatus ", comprise power module, signal gathering unit, A/D converting unit, is electrically connected the output terminal of described signal gathering unit, data processing unit, be electrically connected the output terminal of described A/D converting unit, crude state display unit, is electrically connected the output terminal of described data processing unit, for showing oil mixing with water state during detection; Moisture numerical value display unit, is electrically connected the output terminal of described data processing unit, for showing the water-retention value in the crude oil that detects.This pick-up unit achieves detection display integration and long-range mail message.
But above-mentioned " crude oil water-bearing detection apparatus " still can not be used in the more occasion of the gassiness such as well head or test satellite location, and do not solve the error problem that wall built-up causes.
Summary of the invention
The present invention is directed to the deficiency that existing water in oil analyzer exists, provide a kind of accuracy of detection high, the more occasion of gassiness can be applicable to and can the long-range verification formula crude oil water containing monitoring system of long-range verification, a kind of method of calibration of this system is provided simultaneously.
Long-range verification formula crude oil water containing monitoring system of the present invention, adopts following technical proposals:
This system, comprises header, from degasser, analyzer of water content, wireless transmitter module, wireless receiving module and data processing module; Degasser top is provided with crude oil import and gas piping, and bottom is provided with liquid output pipe, and gas piping is connected to header; Analyzer of water content is arranged on liquid output pipe by connecting pipe, and connecting pipe is provided with arm, and arm is connected with header; Analyzer of water content is connected with wireless receiving module, and wireless receiving module and wireless transmitter module wireless connections, wireless transmitter module is connected with data processing module.
Described from degasser be gas-liquid separator.
The Sensor section of analyzer of water content is immersed in the liquid of liquid output pipe output.The crude oil of gas-liquid mixed is entered by the import from degasser, in degasser, carrying out degassed process, and gas is discharged by the gas piping from degasser top, and liquid is discharged by the liquid output pipe of bottom.When liquid flows through in liquid output pipe, in analyzer of water content, the voltage signal of sensor will the moisture change of based on crude and being shown in real time on the screen of analyzer of water content, realizes crude oil water content detection.In the gas be separated from degasser and liquid and arm, isolated gas finally all enters header again, is discharged, thus ensure that the flow process of Crude Oil Transportation is constant by header.The long-range verification to analyzer of water content is realized by data processing module, wireless transmitter module and wireless receiving module.
The method of calibration of above-mentioned long-range verification formula crude oil water containing monitoring system, comprises the following steps:
(1) on-the-spot to petroleum crude sampling, and record the magnitude of voltage shown by analyzer of water content, sampling crude oil is carried out to water percentage chemical examination and records result of laboratory test, and the magnitude of voltage of each sampling is corresponding with result of laboratory test; According to the magnitude of voltage of correspondence and result of laboratory test (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn) obtains the homologous thread of a magnitude of voltage and result of laboratory test;
(2) data processing module carries out data processing, the magnitude of voltage corresponding according to each sampling and result of laboratory test (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn), by formula K
n=(V
n+1-V
n)/(P
n+1-P
n), draw every section of rate of curve K1, K2, K3, K4 ... K
n-1;
(3) data processing module by wireless transmitter module by every section of rate of curve Wireless transceiver to wireless receiving module, wireless receiving module sends every section of rate of curve to analyzer of water content again;
(4) analyzer of water content receives rate of curve, and the rate of curve received is stored.
The rate of curve that analyzer of water content stores according to the magnitude of voltage contrast obtained calculates crude oil water content.
Invention increases the depressed structure of autospasy and long-range verification, degassed process is carried out in crude oil moisture observation process, solve the metrical error problem that wall built-up causes, prevent measuring error, improve accuracy of detection, be specially adapted to the occasion that the gassiness such as test satellite location or well head is high, long-range verification can be realized.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the present invention's long-range verification formula crude oil water containing monitoring system.
Fig. 2 is the homologous thread figure of magnitude of voltage and result of laboratory test (water percentage).
In figure: 1, from degasser, 2, liquid output pipe, 3, arm, 4, analyzer of water content, 5, header, 6, gas piping, 7, wireless receiving module, 8, wireless transmitter module, 9, data processing module, 10, connecting pipe.
Embodiment
As shown in Figure 1, long-range verification formula crude oil water containing monitoring system of the present invention, mainly comprises header 5, from degasser 2, analyzer of water content 4, wireless transmitter module 7, wireless receiving module 8 and data processing module 9.
The top of degasser 2 is provided with crude oil import, and top is provided with gas piping 6, and bottom is provided with liquid output pipe 2, and gas piping 6 is connected to header 5.The crude oil of gas-liquid mixed enters from degasser 2 by the crude oil import from degasser 2 top, carrying out degassed process in degasser 2, realizes gas-liquid separation.Air accumulation, on the top from degasser 2, is discharged by gas piping 6, is delivered to header 5.Liquid is discharged by the liquid output pipe 2 of bottom, is delivered to header 5.The gas-liquid separator of existing any structure can be adopted from degasser 2.Liquid output pipe 2 is provided with connecting pipe 10.
Analyzer of water content 4 is arranged on the liquid output pipe 2 bottom degasser 2 by connecting pipe 10, and the Sensor section of analyzer of water content 4 is immersed in the liquid of liquid output pipe 2 output.Connecting pipe 10 is provided with arm 3, arm 3 is connected with header 5.When liquid flows through in pipeline, in analyzer of water content 4, the voltage signal of sensor will the moisture change of based on crude and be shown on the screen of analyzer of water content 4 in real time, realizes crude oil water content detection.Isolated gas enters header 5 by arm 3.In the gas be separated from degasser 2 and liquid and liquid, isolated second time gas finally all enters header 5, is discharged, thus ensure that the flow process of Crude Oil Transportation is constant by header 5.
Analyzer of water content 4 is connected with wireless receiving module 7 by the port (RS485) on it, wireless receiving module 7 is connected with wireless transmitter module 8 long distance wireless, wireless transmitter module 8 is connected with data processing module 9, data processing module 9 can adopt existing common computer, single-chip microcomputer or other can carry out the equipment of data processing.Can realize the long-range verification to analyzer of water content 4 by such mode, detailed process is as described below:
1) on-the-spot to petroleum crude sampling, and record the magnitude of voltage shown by analyzer of water content 4, in laboratory, sampling crude oil is carried out to water percentage chemical examination and records result of laboratory test, the magnitude of voltage of each sampling is corresponding with result of laboratory test; Multiple repairing weld will record magnitude of voltage corresponding to many groups and result of laboratory test (water percentage), as (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn), can obtain the homologous thread figure of a magnitude of voltage and result of laboratory test (water percentage) thus, as shown in Figure 2, seven sections of curves are had in Fig. 2;
2) data processing module 9 (computing machine) carries out data processing, the magnitude of voltage corresponding according to each sampling and result of laboratory test (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn), by computing formula K
n=(V
n+1-V
n)/(P
n+1-P
n), draw the rate of curve K1 of every section, K2, K3, K4 ... K
n-1; Six sections of rate of curve can be obtained by Fig. 2;
3) data processing module 9 passes through wireless transmitter module 8 by every section of rate of curve Wireless transceiver to wireless receiving module 8, and wireless receiving module 8 sends every section of rate of curve to analyzer of water content 4 again;
4) analyzer of water content 4 receives rate of curve, and the rate of curve received is stored.
The rate of curve that analyzer of water content 4 stores according to the magnitude of voltage contrast obtained calculates crude oil water content.
Claims (3)
1. a long-range verification formula crude oil water containing monitoring system; Comprise header, from degasser, analyzer of water content, wireless transmitter module, wireless receiving module and data processing module; It is characterized in that: degasser top is provided with crude oil import and gas piping, and bottom is provided with liquid output pipe, and gas piping is connected to header; Analyzer of water content is arranged on liquid output pipe by connecting pipe, and connecting pipe is provided with arm, and arm is connected with header; Analyzer of water content is connected with wireless receiving module, and wireless receiving module and wireless transmitter module wireless connections, wireless transmitter module is connected with data processing module.
2. long-range verification formula crude oil according to claim 1 is from degassed water cut monitor system, it is characterized in that: described from degasser be gas-liquid separator.
3. described in claim 1, long-range verification formula crude oil, from a method of calibration for degassed water cut monitor system, is characterized in that, comprises the following steps:
(1) on-the-spot to petroleum crude sampling, and record the magnitude of voltage shown by analyzer of water content, sampling crude oil is carried out to water percentage chemical examination and records result of laboratory test, and the magnitude of voltage of each sampling is corresponding with result of laboratory test; According to the magnitude of voltage of correspondence and result of laboratory test (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn) obtains the homologous thread of a magnitude of voltage and result of laboratory test;
(2) data processing module carries out data processing, the magnitude of voltage corresponding according to each sampling and result of laboratory test (V1, P1), (V2, P2), (V3, P3), (V4, P4), (V5, P5) ... (Vn, Pn), by formula K
n=(V
n+1-V
n)/(P
n+1-P
n), draw every section of rate of curve K1, K2, K3, K4 ... K
n-1;
(3) data processing module by wireless transmitter module by every section of rate of curve Wireless transceiver to wireless receiving module, wireless receiving module sends every section of rate of curve to analyzer of water content again;
(4) analyzer of water content receives rate of curve, and the rate of curve received is stored.
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Application publication date: 20150923 |