CN201705647U - Comprehensive tester of measurement and diagnosis of screw pump well - Google Patents

Abstract

The utility model relates to a comprehensive tester of measurement and diagnosis of a screw pump well. A polished rod torque sensor, a current and voltage sensor, a wellhead pressure and the like of a diagnosis tester are connected with a microprocessor; after the test is finished, the diagnosis result can be obtained after theoretical upper computer software, i.e. comprehensive diagnosis software of the working condition of a screw pump, is needed to carry out analysis on working conditions; and the input parameter is more, the taking of all and exact parameters is difficult, and the fixed theory software is used for analyzing oil-producing wells with different site working conditions so as to be difficult to be practical. The comprehensive tester comprises a notebook computer or a palm computer personal digital assistant (PDA), and industrial control personal computer (PC)104 machine; the notebook computer (1) is connected with a wireless receiving antenna (3) which is provided with a receiving module throuha a wire (2); the receiving module is connected with a transmitting module in a wireless transmitter (4) by received signals; the wireless transmitter is connected with a sensor (5) which is provided with torque, tension and rotating speed. The comprehensive tester is used for measurement and diagnosis of the screw pump.

Description

Screw bolt well quantitative diagnosis comprehensive tester

Technical field:

The utility model relates to a kind of instrument and apparatus, is specifically related to a kind of screw pump oil production well quantitative diagnosis comprehensive tester.

Background technique:

At present, Chinese patent CN200420112567.X discloses a kind of " screw pump operating mode comprehensive diagnos testing instrument ", hereinafter to be referred as " diagnostic tester ", it by polished rod torque sensor 1, current/voltage sensor 2, well head pressure sensor 3, well head 4, data-signal acquisition system 5, speed reducer 6, polished rod 7, polished rod clamp 8, computer 9, form." diagnostic tester " adopted and be connected to polished rod torque sensor, speed reducer successively on polished rod, and speed reducer for well head, is connected to pressure transducer, the data-signal acquisition system down on well head.The polished rod torque sensor of " diagnostic tester ", current/voltage sensor, well head pressure sensor etc. are connected with microprocessor, behind the EOT, needing theoretical upper computer software is after screw pump operating mode comprehensive diagnos software carries out performance analysis, can draw diagnostic result, the input parameter is many, get standard and get full parameter difficulty, the fixing different oil recovery well of theoretical software analysis field working conditions is difficult to practicability.

Summary of the invention:

The purpose of this utility model provides a kind of utilization and comprises that notebook computer, wireless receiving antenna, wireless launcher and sensor moment of torsion, pulling force, rotating speed finish the purpose of measurement such as screw pump oil production well well head petroleum pipeline three-phase stream flow, individual well daily fluid production rate, annulus liquid level and the diagnosis of suggestiveness operating mode.

Above-mentioned purpose realizes by following technological scheme:

Screw bolt well quantitative diagnosis comprehensive tester, its composition comprises: notebook computer or palm PC PDA, industrial control PC104 machine, described notebook computer connects the wireless receiving antenna by lead, described wireless receiving antenna is equipped with receiving module, described receiving module is by the transmitter module in the received signal connection wireless launcher, and described wireless launcher connects sensor.

Described screw bolt well quantitative diagnosis comprehensive tester, described wireless receiving antenna connects the USB interface of notebook computer.

Beneficial effect:

1. the utility model is directly handled pulling force, moment of torsion or rotating speed, set up model according to the field measurement data, can provide test result after test finishes, the input parameter is few, realization does not need screw pump operating mode comprehensive diagnos software to carry out the operating mode diagnosis to the correct real-time diagnosis of screw pump operating mode.

2. test data of the present utility model and diagnostic result directly deposit file in, are convenient to playback and check data, and be easy to operate, with strong points.

3. directly provide the operating mode diagnostic result during the utility model EOT, not needing upper computer software is screw pump operating mode comprehensive diagnos software analysis, need not change moment of torsion or rotating speed by speed reducer.

4. provide screw pump oil production well well head petroleum pipeline three-phase stream flow, individual well daily fluid production rate, annulus liquid level, suggestiveness operating mode diagnostic result after the utility model test finishes and comprise that bar is disconnected, parameter is high, parameter is low, miss, have or not wearing and tearing etc.

5. the utility model is generally promoted at industrial field, and the production of screw pump oil production well is had directive significance.

6. the utility model is manufactured the screw bolt well quantitative diagnosis comprehensive tester of a practicability according to the data of on-the-spot test and process model is set up in the understanding of operating mode, reduces testing cost, energy-saving and cost-reducing, is convenient to the management of screw pump production process.

Description of drawings:

Accompanying drawing 1 is the structural representation of this product.

Accompanying drawing 2 is the circuit diagram of this product.

Accompanying drawing 3 is the schematic diagram of strain gauge bridge in this product.

Accompanying drawing 4 is the circuit diagram of preamplifier one tunnel in this product.

Embodiment:

Embodiment 1:

Screw bolt well quantitative diagnosis comprehensive tester, its composition comprises: notebook computer or palm PC PDA, industrial control PC104 machine, described notebook computer 1 connects wireless receiving antenna 3 by lead 2, described wireless receiving antenna 3 is equipped with receiving module, described receiving module is by the transmitter module in the received signal connection wireless launcher 4, described wireless launcher 4 connects sensor 5, and is described

Sensor have moment of torsion, pulling force and rotating speed.

Described screw bolt well quantitative diagnosis comprehensive tester, described wireless receiving antenna has USB interface, and described USB interface connects notebook computer.

Embodiment 2:

Embodiment's 1 described screw bolt well quantitative diagnosis comprehensive tester; before the operating mode of screw pump oil production well of being in operation changes; sensor continues to detect the signal before on-the-spot pulling force, moment of torsion and rotating speed operating mode change; operating mode change the back as: shut down or frequency conversion transfers that extraction liquid injects ring set in ginseng or the oil recovery well oil pipe; operation a period of time; annulus liquid level is changed, and oil recovery well continues this work condition state and moves a period of time (t) down.Return to operating mode again and change preceding state operation, measure pulling force or moment of torsion after operating mode changes.Screw pump oil production well is through behind the top running, and the annular space of oil recovery well (between oil pipe and the sleeve pipe) liquid level changes, and the annulus liquid level variation causes aboveground sensor measurement pulling force or the forward and backward value of moment of torsion to change.The forward and backward variable quantity of the variable quantity of pulling force or the forward and backward measured value of moment of torsion and ring set liquid level is set up model, according to the time (t) of working conditions change fore-and-aft survey, promptly be convertible into well head petroleum pipeline three-phase stream flow and individual well daily fluid production rate, annulus liquid level, the diagnosis of suggestiveness operating mode comprise that bar is disconnected, parameter is high, parameter is low, miss, have or not wearing and tearing etc.; The data fulfillment database network management that screw pump oil production well is measured is uploaded survey data, and restriction is to the authority of the inquiry of survey data, modification, deletion.

Embodiment 3:

Embodiment 1 or 2 described screw bolt well quantitative diagnosis comprehensive testers, described sensor is converted into electrical signal with moment of torsion, pulling force signal, after preposition amplification, send into A/D, single-chip microcomputer is handled digital signal, send through antenna, this wireless receiving of machine, this main frame of machine is to the survey data analysing and processing, EOT can provide well head three-phase stream flow, individual well daily fluid production rate, liquid level, and the suggestiveness diagnostic result of operating mode, the data file that test finishes forms form by curve playback software, data bank network management etc.

Described torque sensor, pulling force sensor and speed probe all adopt the ohmic bridge strain-gauge transducer; In the bridge type testing circuit, the preamplifier that connects later is generally differential amplifier, described strain gauge bridge, and wherein R1 is an operating resistance, during work, has only its resistance to change with deformation.Δ R1 is the changing value of R1.Uo=0 under the original state.When Δ R1,

$U_o=\frac{\frac{R_4}{R_3}\frac{\mathrm{\Δ}{R}_1}{R_1}}{(1+\frac{R_2}{R_1}+\frac{\mathrm{\Δ}{R}_1}{R_1})(1+\frac{R_4}{R_3})}U$

If brachium pontis ratio

During by the electric bridge initial balance, Fig. 1 Cast out in the denominator Can get,

$U_0=\frac{n}{(1+n^2)}\frac{\mathrm{\ΔR}1}{R_1}U$

In order to use electric bridge electrical equipment sensitivity maximum, in the reality,

Get R ₁=R ₂, i.e. n=1, then,

$U_o=\frac{\mathrm{<figure-callout\; id="4"\; label="U"\; filenames="HSA00000035500700021.png,HSA00000035500700032.png"\; state="\{\{state\}\}">U</figure-callout>}}{4}\frac{\mathrm{\&Delta;}{R}_1}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="HSA00000035500700021.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}$

Because the output voltage of sensor element is very little, be no more than tens millivolts usually, and tach signal has only several millivolts, so Ruo signal single-chip microcomputer can't be handled, and is also flooded by noise interference easily.Therefore need amplify by the voltage signal that this is faint, the effect of preamplifier is that the signal of sensor is carried out giving single-chip microcomputer after suitable amplification shaping is handled.

Pre-amplification circuit has three the tunnel, is used for amplifying the output voltage of pulling force, moment of torsion and speed probe respectively.Three tunnel circuit design is duplicate, though the output voltage of each sensor is different in measuring, can control final output voltage U 0 by regulator potentiometer W1 and W2, makes it satisfy the requirement of follow-up A/D conversion.AR1 and R1, R2, R3, R4 constitute first order differential amplifier.This connection can make the output voltage of circuit and the relative change rate of working sensor resistance be good linear relationship, and the measurement that is beneficial to after A/D changes is demarcated.The output voltage U i of sensor is equivalent to the common mode input of differential amplifier, and " empty short ", " virtual earth " characteristic by ideal operational amplifier have:

U _a＝U _b

$U_a=\frac{R_1}{R_2+R_1}(U_1-U_i)+U_i$

$U_b=\frac{R_3}{R_1+R_3}{U}_i$

More than three formula simultaneous can try to achieve:

In the emission sampling section of screw pump comprehensive tester, SCM system is its core, and screw pump quantitative diagnosis comprehensive tester uses a kind of chip of high-performance embedded microcontroller.During work, this part also will be done the motion of rotation in company with the polished rod of screw pump.After the data processing after CPU changes A/D, give wireless data transmission module with data, between single-chip microcomputer and upper-position unit, set up data communication wirelessly by wireless module by its serial port.Therefore the design requires selected single-chip microcomputer should have the characteristics that speed is fast, stability is strong.

Theoretical formula and various model were as follows under screw pump ran well

1 moment of torsion

M well head torque axis is formed (M4) by meritorious moment of torsion (M2), bar liquid friction moment of torsion (M3), the centralizer moment of torsion of son self moment of torsion (M1), lifting liquid, and concrete formula is as follows:

M＝M1+M2+M3+M4

M1＝1.02×(91.3δ0+n0.45)+46.2

${\mathrm{<figure-callout\; id="2"\; label="M"\; filenames="HSA00000035500700021.png"\; state="\{\{state\}\}">M</figure-callout>}}_2=\frac{2\mathrm{eDT}}{\mathrm{\&pi;}}\mathrm{\&Delta;P}$

${\mathrm{<figure-callout\; id="3"\; label="M"\; filenames="HSA00000035500700021.png"\; state="\{\{state\}\}">M</figure-callout>}}_3=\frac{{2\mathrm{\&pi;}}^2\mathrm{\&mu;}{\mathrm{nD}}^2{d}^2}{D^2-d^2}L$

M4＝MN×N

N-centralizer number

Each centralizer friction moment of torsion of MN-, algorithm is with reference to M3

2, pulling force

F＝F1+F2-F3-F4

F2＝(πR2+16eR)ΔP

F4＝2πμ1e1VL

$e1=\frac{m^2-1}{[({\mathrm{<figure-callout\; id="2"\; label="m"\; filenames="HSA00000035500700021.png"\; state="\{\{state\}\}">m</figure-callout>}}^2+1)/n]m-(m^2-1)},$ $m=\frac{D}{d}$

The deadweight of F1-sucker rod

The F2-fluid pressure acts on epitrochanterian axial force

The buoyancy of F3-liquid king-rod

The friction that the F4-flow of fluid makes progress to sucker rod

The D-pipe aperture

The d-shank diameter

3, pressure reduction

ΔP＝Pd+Pz+Pm-Ph-Pc

Pd-ground oil pipeline pressure

The Pz-pump discharge is to the interior fluid column static pressure MP of well head oil pipe

The Pm-pump discharge is to the linear loss MP of well head flow of fluid

Ph-annular space producing fluid level is to the fluid column static pressure of pump intake

The Pc-casing pressure

Present screw bolt well operating mode, oil pressure Pd and casing pressure Pc difference are little, and be little to the system testing influence

Pz＝γL×10-6 Ph＝γh×10-6

$\mathrm{Pm}=\frac{128\mathrm{k\&mu;LQ}}{\mathrm{\&pi;}{(D-d)}^2(D^2-d^2)}\&times;{10}^6$

$K=(1-D/d)[(1+D/d)+\frac{1-{(D/d)}^2}{\mathrm{Lh}(D/d)}]-1$

Q=4eD1T revolution discharge capacity

γ-density, N/m3

K-flow channel shape coefficient, decimal

μ-fluid viscosity, PaS

The throw of eccentric of e-pump, m

D1-spiral shell cash pump rotor diameter, m

T-stator helical pitch, m

4, set up annulus liquid level variable quantity model

The oil recovery well of normal operation, all there is following relation in different pump types, and are only relevant with annulus liquid level variable quantity (with liquid height and weight change amount), and what have nothing to do with air content, and the weight of gas is compared with liquid and can be ignored.

Actual measurement tension measurement difference before and after Δ F operating mode changes

Have: Δ F/S2=Δ W1/S1 (1)

ΔW1＝S1ΔF/S2 (2)

5, individual well daily fluid production rate model

$\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HSA00000035500700021.png"\; state="\{\{state\}\}">W</figure-callout>}1=\frac{1440\mathrm{\&Delta;}{W}_1}{t}---\left(3\right)$

6, oil recovery well three-phase stream discharge model

$Q=\frac{60\mathrm{\&Delta;}{w}_1}{t}---\left(4\right)$

Annular space liquid measure variable quantity in the Δ W1t time, what have nothing to do with air content.

Q well head three-phase stream flow kilogram/hour

W1 individual well daily fluid production rate ton/sky

S1 annular space sectional area

S2 oil well pump cavity cross-section is long-pending

T changes oil recovery well operating mode and continuous service a period of time

7, set up the annulus liquid level model

Because F-F1+F3+F4=F2 (5)

F2＝(πR2+16eR)ΔP

ΔP＝Pd+Pz+Pm-Ph-Pc

Pz-Ph＝ΔP-Pd-Pm+Pc

γ＝0.855(1-ν)+ν

H γ=Pz-Ph is arranged

H＝(Pz-Ph)/γ (6)

The ν moisture content

T changes oil recovery well operating mode and continuous service a period of time

The H annulus liquid level

M surveys torque value

F surveys value of thrust

8, set up the moduli type of transferring

1. parameter height

If HH-H＜100 on-the-spot screw bolt well duty parameter height, revolution is turned down in suggestion.

2. parameter is low

If the on-the-spot screw bolt well duty parameter in H＜300 is low, revolution is heightened in suggestion.

9, set up the disconnected model of bar

If F＜F1-F3 then on-the-spot screw bolt well bar are disconnected

10, set up wear model

After if on-the-spot screw bolt well opens machine, when screw pump normally moved, the difference between actual measurement moment of torsion N maximum and the minimum was greater than 20Nm, and had periodic regularity to occur, and then on-the-spot screw bolt well has wearing and tearing.

11, set up the leakage model

If F＞F1-F3 and M＜M1+50, then on-the-spot screw bolt well has leakage.

Claims (2)

1. screw bolt well quantitative diagnosis comprehensive tester, its composition comprises: notebook computer or palm PC PDA, industrial control PC104 machine, it is characterized in that: described notebook computer connects the wireless receiving antenna by lead, described wireless receiving antenna is equipped with receiving module, described receiving module is by the transmitter module in the received signal connection wireless launcher, and described wireless launcher connects sensor.

2. screw bolt well quantitative diagnosis comprehensive tester according to claim 1 is characterized in that: described wireless receiving antenna connects the USB interface of notebook computer.

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