CN106837305A - The method and apparatus for determining pumpingh well underground level - Google Patents
The method and apparatus for determining pumpingh well underground level Download PDFInfo
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- CN106837305A CN106837305A CN201611233849.9A CN201611233849A CN106837305A CN 106837305 A CN106837305 A CN 106837305A CN 201611233849 A CN201611233849 A CN 201611233849A CN 106837305 A CN106837305 A CN 106837305A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
Abstract
The invention provides a kind of method and apparatus for determining pumpingh well underground level, wherein, the method includes：Obtain wellhead temperature, surface casing pressure and the well head oil pressure of oil well to be measured；According to the wellhead temperature, the surface casing pressure and the well head oil pressure, sound wave spread speed in the oil well to be measured is determined；Obtain configured transmission of the ping in the oil well to be measured；According to the spread speed and the configured transmission, the underground level of the oil well is determined.During the spread speed for solving existing use fixation by the solution of the present invention carries out the level determination of pumpingh well underground, the inaccurate technical problem of caused result, the technique effect of the spread speed accuracy for improving sound wave is reached, it is achieved thereby that improving the purpose of the accuracy of pumpingh well underground level.
Description
Technical field
The present invention relates to technical field of geological exploration, more particularly to a kind of method for determining pumpingh well underground level and
Device.
Background technology
At present, during petroleum industry is produced, largely using oil pumper, pumpingh well liquid level gauging is to understand oil pumper
Fluid supply capacity, determine the important evidence of pumpingh well deep well pump submersible depth and working condition, is that pumpingh well must survey one of parameter.
According to liquid-column height in the well that underground level determines, the size of formation pressure can be extrapolated, to determine the life of pumpingh well
Production capacity power, and select the most rational mode of production of pumpingh well.Therefore, the measurement of underground level is to grasping pumpingh well underground shape
Condition, strengthens the scientific management to pumpingh well, ensures the long-term, efficient of pumpingh well, full production, increases economic efficiency, and all has
There is important meaning.
The spread speed of underground sound wave be calculate oil well sound level deciding factor, practical application when
Wait, usually using the empirical value of 420m/s, but in oil sets annular space temperature, pressure real-time change so that sound under real well
Also there is change in speed, now, if being continuing with the experience fixed value of 420m/s, then will cause the meter of underground level
Calculate result and error occur, influence is to producing dynamic judgement.
For the transmission speed for how accurately determining sound wave in oil-pumping well sheath, effective solution party is not yet proposed at present
Case.
The content of the invention
A kind of method and apparatus for determining pumpingh well underground level are the embodiment of the invention provides, it is accurate true to reach
The spread speed of accordatura ripple, so as to accurately determine the purpose of pumpingh well underground level.
A kind of method for determining pumpingh well underground level is the embodiment of the invention provides, the method includes：
Obtain wellhead temperature, surface casing pressure and the well head oil pressure of oil well to be measured；
According to the wellhead temperature, the surface casing pressure and the well head oil pressure, determine sound wave in the oil well to be measured
Spread speed；
Obtain configured transmission of the ping in the oil well to be measured；
According to the spread speed and the configured transmission, the underground level of the oil well is determined.
In one embodiment, obtaining configured transmission of the ping in the oil well to be measured includes：
By the sonic generator at the well head of the oil well to be measured, to sending ping in the oil well to be measured；
During receiving ping propagation downwards by the acoustic receiver at well head, petroleum liquid is run into upwardly
The echo for reflecting；
The time point of the echo will be received and the time difference between the ping is sent, joined as the transmission
Number.
In one embodiment, according to the wellhead temperature, the surface casing pressure and the well head oil pressure, sound wave is determined
The spread speed in the oil well to be measured, including：
The wellhead temperature, the surface casing pressure and the well head oil pressure, substitution are fitted the fit equation for obtaining in advance,
Obtain spread speed of the sound wave in the oil well to be measured.
In one embodiment, fitting obtains the fit equation in such a way：
Wellhead temperature, surface casing pressure and the well head oil pressure of multiple sample oil wells are obtained, and the multiple sample oil well is not
With the sound wave spread speed of time period；
Wellhead temperature, surface casing pressure and well head oil pressure to the multiple sample oil well, and the multiple sample oil well
The sound wave spread speed of different time sections, is fitted, and obtains the fit equation.
In one embodiment, the fit equation is：
V=-17.6a-1.3b+97c+667
Wherein, a represents surface casing pressure, and b represents wellhead temperature, and c represents well head oil pressure.
The embodiment of the present invention additionally provides a kind of device for determining pumpingh well underground level, and the device includes：
First acquisition module, wellhead temperature, surface casing pressure and well head oil pressure for obtaining oil well to be measured；
First determining module, for according to the wellhead temperature, the surface casing pressure and the well head oil pressure, determining sound wave
The spread speed in the oil well to be measured；
Second acquisition module, for obtaining configured transmission of the ping in the oil well to be measured；
Second determining module, for according to the spread speed and the configured transmission, determining the underground liquid of the oil well
Face depth.
In one embodiment, second acquisition module includes：
Transmitting element, for by the sonic generator at the well head of the oil well to be measured, to the oil well to be measured
Middle transmission ping；
Receiving unit, during receiving ping propagation downwards by the acoustic receiver at well head, meets
To the echo that petroleum liquid is reflected upwardly；
Determining unit, for will receive the time point of the echo and send the time difference between the ping, makees
It is the configured transmission.
In one embodiment, first determining module is specifically for by the wellhead temperature, the surface casing pressure
With the well head oil pressure, the fit equation for being fitted obtain in advance is substituted into, obtain spread speed of the sound wave in the oil well to be measured.
In one embodiment, also include：Fitting module, the fit equation is obtained for being fitted：The fitting mould
Block includes：
Acquiring unit, wellhead temperature, surface casing pressure and well head oil pressure for obtaining multiple sample oil wells, and it is described many
The sound wave spread speed of individual sample oil well different time sections；
Fitting unit, it is for the wellhead temperature to the multiple sample oil well, surface casing pressure and well head oil pressure and described
The sound wave spread speed of multiple sample oil well different time sections, is fitted, and obtains the fit equation.
In one embodiment, the fit equation is：
V=-17.6a-1.3b+97c+667
Wherein, V represents sound wave spread speed in the oil well to be measured, and a represents surface casing pressure, and b represents wellhead temperature, c
Represent well head oil pressure.
In embodiments of the present invention, by well head dynamic parameters such as wellhead temperature, surface casing pressure and well head oil pressure, sound is determined
Transmission speed of the ripple in oil well, such that it is able to obtain real-time transmission speed, can solve existing using fixed propagation
During speed carries out the level determination of pumpingh well underground, the inaccurate technical problem of caused result has reached and has carried
The technique effect of the spread speed accuracy of sound wave high, so as to improve the accuracy of pumpingh well underground level.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, not
Constitute limitation of the invention.In the accompanying drawings：
Fig. 1 is the flow chart of the method for determination pumpingh well underground level according to embodiments of the present invention；
Fig. 2 is model flow schematic diagram according to embodiments of the present invention；
Fig. 3 is that the velocity of sound according to embodiments of the present invention calculates schematic diagram；
Fig. 4 is model prediction the result schematic diagram according to embodiments of the present invention；
Fig. 5 is the structured flowchart of the device of determination pumpingh well underground level according to embodiments of the present invention.
Specific embodiment
It is right with reference to implementation method and accompanying drawing to make the object, technical solutions and advantages of the present invention become more apparent
The present invention is described in further details.Here, exemplary embodiment of the invention and its illustrating for explaining the present invention, but simultaneously
It is not as a limitation of the invention.
Measurement in view of pumpingh well liquid level is not only related to the assessment of the individual well condition of production, can more be related to whole exploitation
The macro-plan of series of strata production status, accordingly, it is determined that it is particularly significant to go out accurate sound wave transmission speed.Therefore, inventor considers
Arrive, can be by the way that the spread speed of underground sound wave be accurately calculated using well head Production development parameter on individual well, so as to accurately determine
The sound liquid level of position individual well.
As shown in figure 1, in this example, there is provided a kind of method for determining pumpingh well underground level, can include such as
Lower step：
Step 101：Obtain wellhead temperature, surface casing pressure and the well head oil pressure of oil well to be measured；
In order to measure the depth of certain oil well liquid level, the real-time sound wave transmission speed of the oil well can be first determined, so
Afterwards based on the accurate sound wave transmission speed determined, the depth of underground liquid level is determined.
Spread speed in view of sound wave can receive the influence of some dynamic parameters of oil well, therefore, it can first to determine fuel-displaced
Some dynamic parameters of well, are then based on these dynamic parameters and determine spread speed.Specifically, in this example, choosing well head temperature
Degree, surface casing pressure and well head oil pressure are used as the dynamic parameter chosen.Namely be based on real-time wellhead temperature, surface casing pressure and well head
Oil pressure, in this case, determines the real time communication speed of sound wave.
Step 102：According to the wellhead temperature, the surface casing pressure and the well head oil pressure, determine that sound wave is treated described
Survey spread speed in oil well；
When spread speed is calculated, can be calculated by being fitted the fit equation for obtaining in advance, i.e. will
The real-time dynamic parameter for obtaining is substituted into the fit equation, is directly calculated spread speed of the sound wave in oil well.The fitting side
Journey, can be obtained using the fitting of multiple linear regression fit approach.Specifically, under linear relationship related condition, two
Or two or more independent variable is to a dependent variable, is multiple linear regression analysis, shows the mathematical formulae of this quantitative relation,
Referred to as multiple linear regression model.
, it is necessary to first obtain some sample datas before operation is fitted, so can just be fitted.That is, it needs to obtain
Take wellhead temperature, surface casing pressure and the well head oil pressure of multiple sample oil wells, and the multiple sample oil well different time sections
Sound wave spread speed；Then, wellhead temperature, surface casing pressure and well head oil pressure then to multiple sample oil wells, and multiple samples
The sound wave spread speed of oil well different time sections, is fitted, and obtains fit equation.
Specifically, the pressure of known depth point can be detected by down-hole pressure observation system, then according to vertical flow
Body calculation of pressure formula is calculated the height of fluid column on the depth point.The depth of the depth point is known, therefore, so that it may
To obtain the accurate depth of the oil well page.Sound wave can be just calculated by well head liquid level tester and encounter liquid in underground
Propagation time during face.By the accurate depth being calculated and propagation time, the accurate delivery of underground sound wave can be calculated
Speed.Based on above-mentioned calculation, accurate transmission speed of multiple sample oil wells in different time points can be obtained.
In this example, the spread speed of sound wave and well head dynamic parameter are carried out into correlation analysis, select oil pressure, casing pressure and
Three coefficient correlation highest parameters of wellhead temperature, carry out multiple linear regression fitting, have obtained following fit equation：
V=-17.6a-1.3b+97c+667
Wherein, V represents sound wave spread speed in the oil well to be measured, and a represents surface casing pressure, and b represents wellhead temperature, c
Represent well head oil pressure.
Step 103：Obtain configured transmission of the ping in the oil well to be measured；
In order to realize the determination to underground level, in addition to obtaining the transmission speed of above-mentioned sound wave, in addition it is also necessary to
Configured transmission of the ping in the oil well is obtained, specifically, can be by the sound wave at the well head of the oil well to be measured
Generator, to sending ping in the oil well to be measured；The ping is received by the acoustic receiver at well head to pass downwards
During broadcasting, the echo that petroleum liquid is reflected upwardly is run into；Then, the time point of the echo will be received and is sent
Time difference between the ping, as configured transmission.
Step 104：According to the spread speed and the configured transmission, the underground level of the oil well is determined.
Specifically, acoustic detection mode can be used, by the sonic generator positioned at well head, usually special big gun rifle institute
The ping (explosive sound source) of generation is propagated downwards by the gas in sleeve pipe annular space, during propagating downwards, ping
Petroleum liquid can be run into reflect upwardly, the echo for reflecting is received by the acoustic receiver of well head, is then passed to wave filter, is put
Big device and data Collection ＆ Processing System are processed.
With reference to a specific embodiment, the method to above-mentioned determination pumpingh well underground level is illustrated, so
And, it is notable that the specific embodiment does not constitute the improper limit to the application merely to the application is better described
It is fixed.
In view of pumpingh well underground level measurement be not only related to individual well the condition of production assessment, be also relate to
The macro-plan of whole straticulate exploration production status.In this example, by individual well using well head Production development parameter come accurate
The spread speed of underground sound wave is really calculated, to be accurately positioned individual well sound liquid level.
As shown in Fig. 2 the pressure that SAGD well down-hole pressures observation system monitors known depth point is first passed through, and specifically, will
Traditional vertical fluid calculation of pressure formula 1 is transformed to formula 2, as shown in figure 3, trying to achieve the height of fluid column on the pressure spot
H2, by known pressure monitoring point H, obtains the accurate depth h1=H-h2 of oil well liquid level.Then, by well head liquid level tester
Propagation time t of the sound wave when liquid level is encountered in underground is calculated, the time t propagated by the depth h1 and sound wave of known liquid level, band
Enter the arcuate propagation speed v that following formula 3 are calculated underground sound wave：
P=ρ gh (formula 1)
H=P/ ρ g (formula 2)
V=h/t (formula 3)
The spread speed of sound wave and well head dynamic parameter are carried out into correlation analysis, oil pressure, casing pressure, wellhead temperature is selected
Three coefficient correlation highest parameters, carry out multiple linear regression fitting, and fitting theory is as follows：
Under linear relationship related condition, two or more independents variable, to a dependent variable, are multiple linear
Regression analysis, shows the mathematical formulae of this quantitative relation, referred to as multiple linear regression model.Multiple linear regression model is one
The extension of first linear regression model (LRM), its general principle is similar with Linear Regression Model in One Unknown, simply computationally for complexity need to be borrowed
Computer is helped to complete.
Computing formula is as follows：
If random y and general variance x1,x2,…xkLinear regression model (LRM) be：
Y=β0+β1x1+β2x2+βkxk+ε
Wherein, β0,β1,…βkIt is k+1 unknown parameter, β0Referred to as regression constant, β1,…βkReferred to as regression coefficient；Y is referred to as
Explained variable；x1,x2,…xkIt is that k can be with the general variance of controllable precise, referred to as explanatory variable.
As p=1, above formula is Linear Regression Model in One Unknown, and during k >=2, above formula is just called polynary shape multiple regression mould
Type.ε is random error, as one-variable linear regression, is usually assumed that：
Equally, multiple linear popualtion regression equation is：
Y=β0+β1x1+β2x2+…+βkxk
Wherein, factor beta1Represent in the case where other independents variable are constant, independent variable x1Vary to what is caused during a unit
The mean unit of dependent variable y.The implication of other regression coefficients is similar, and from for gathering in meaning, multiple regression is hyperspace
On a plane.
Multiple linear regression equation is：
The estimation of regression coefficient can equally use least square method in multiple linear regression equations.By residual sum of squares (RSS)：
Principle is obtained according to minimizing in calculus, it is known that residual sum of squares (RSS) SSE has minimum.SSE to be made reaches most
Small, SSE is to β0,β1,…βkPartial derivative be necessary for zero.
By SSE to β0,β1,…βkPartial derivative is sought, and makes it be equal to zero, k+1 equation is can obtain after being arranged：
β just can be respectively obtained by solving this equation group0,β1,…βkEstimateRegression coefficient
Estimate, when independent variable number is more, amount of calculation can be completed than larger by computer.SPSS can also be utilized, only
Enter data into, and specify dependent variable and corresponding independent variable, you can obtain result.
To multiple linear regression, it is also desirable to determine equation fitting degree, inspection regression equation and regression coefficient it is notable
Property.
The degree of fitting degree of multiple linear regression is determined, it is similar with the coefficient of determination in one-variable linear regression, it is possible to use
Multiple decision coefficient, is defined as：
Wherein, SSR is regression sum of square, and SSE is residual sum of squares (RSS), and SST is total sum of squares of deviations.
It is similar with one-variable linear regression, 0≤R2≤ 1, R2Closer to 1, plane of regression fitting degree is higher, conversely, R2More
Close to 0, fitting degree is lower.R2Square root turn into negative correlation coefficient (R), also as coefficient of multiple correlation.It is represented because becoming
Linear correlation degree between amount y and all independents variable entirety, what reality reflected is the related journey between sample data and prediction data
Degree, coefficient of determination R2Size influenceed by the number k of independent variable x.
Be can see in actual regression analysis, with the increase of independent variable x numbers, regression sum of square (SSR) increase, R2
Increase.Due to increasing the R that independent variable number causes2Increase is unrelated with fitting quality, therefore in independent variable number k different recurrence
When comparing fitting degree between equation, R2It is not a suitable index, it is necessary to corrected or adjusted.
Method of adjustment can be：Residual sum of squares (RSS) and the molecule denominator of the ratio between total sum of squares of deviations are respectively divided by respective
The free degree, becomes the ratio between mean square deviation, to reject influence of the independent variable number to the goodness of fit.
The R of adjustment2Can be expressed as：
By above-mentioned formula as can be seen thatWhat is considered is average residual sum of squares (RSS), rather than residual sum of squares (RSS), therefore,
Typically in linear regression analysis,It is the bigger the better.
Being taken temperature from F statistics can also reflect the fitting degree of regression equation.By the formula and R of F statistics2Formula make
One combines conversion, can obtain：
It can be seen that, if the degree of fitting of regression equation is high, F statistics are more notable；F statistics are more notable, regression equation
The goodness of fit is also higher.
After multiple linear regression, the following underground velocity of sound and oil pressure, casing pressure, the calculating mould of wellhead temperature can be set up
Type：
V=-17.6a-1.3b+97c+667
Wherein, a represents surface casing pressure, and b represents wellhead temperature, and c represents well head oil pressure.
Above-mentioned computation model is applied to same layer position SAGD wells, the underground velocity of sound of model calculating is relied on, phase is calculated
The down-hole pressure that should be put, as shown in figure 4, measuring pressure with real-time SAGD pressure detecting systems carries out contrast verification, coefficient correlation
0.92 can be reached.
Based on same inventive concept, a kind of dress for determining pumpingh well underground level is additionally provided in the embodiment of the present invention
Put, as described in the following examples.Because the principle for determining the device solve problem of pumpingh well underground level is taken out with determination
The method of oil well level is similar, it is thus determined that the implementation of the device of pumpingh well underground level may refer to determine
The implementation of the method for pumpingh well underground level, repeats part and repeats no more.It is used below, term " unit " or
" module " can realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferably
Realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.Fig. 5 is this hair
A kind of structured flowchart of the device of the determination pumpingh well underground level of bright embodiment, as shown in figure 5, can include：First
Acquisition module 501, the first determining module 502, the second acquisition module 503 and the second determining module 504, are carried out to the structure below
Explanation.
First acquisition module 501, wellhead temperature, surface casing pressure and well head oil pressure for obtaining oil well to be measured；
First determining module 502, for according to the wellhead temperature, the surface casing pressure and the well head oil pressure, it is determined that
Sound wave spread speed in the oil well to be measured；
Second acquisition module 503, for obtaining configured transmission of the ping in the oil well to be measured；
Second determining module 504, for according to the spread speed and the configured transmission, determining the underground of the oil well
Level.
In one embodiment, the second acquisition module 503 can include：Transmitting element, for being treated by positioned at described
The sonic generator surveyed at the well head of oil well, to sending ping in the oil well to be measured；Receiving unit, at by well head
Acoustic receiver receive during the ping propagates downwards, run into the echo that petroleum liquid is reflected upwardly；Really
Order unit, for will receive the time point of the echo and send the time difference between the ping, as the transmission
Parameter.
In one embodiment, the first determining module 502 specifically can be used for the wellhead temperature, the well head set
Pressure and the well head oil pressure, substitution are fitted the fit equation for obtaining in advance, obtain propagation speed of the sound wave in the oil well to be measured
Degree.
In one embodiment, the device of above-mentioned determination pumpingh well underground level can also include：Fitting module,
The fit equation is obtained for being fitted：The fitting module includes：Acquiring unit, the well head for obtaining multiple sample oil wells
Temperature, surface casing pressure and well head oil pressure, and the multiple sample oil well different time sections sound wave spread speed；Fitting is single
Unit, for the wellhead temperature to the multiple sample oil well, surface casing pressure and well head oil pressure, and the multiple sample oil well is not
With the sound wave spread speed of time period, it is fitted, obtains the fit equation.
In one embodiment, the fit equation is：
V=-17.6a-1.3b+97c+667
Wherein, V represents sound wave spread speed in the oil well to be measured, and a represents surface casing pressure, and b represents wellhead temperature, c
Represent well head oil pressure.
In another embodiment, a kind of software is additionally provided, the software is used to perform above-described embodiment and preferred reality
Apply the technical scheme described in mode.
In another embodiment, a kind of storage medium is additionally provided, be stored with above-mentioned software in the storage medium, should
Storage medium is included but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
As can be seen from the above description, the embodiment of the present invention realizes following technique effect：By wellhead temperature,
The well head dynamic parameter such as surface casing pressure and well head oil pressure, determines transmission speed of the sound wave in oil well, such that it is able to obtain in real time
Transmission speed, can solve existing to carry out the process that pumpingh well underground level determines using fixed spread speed
In, the inaccurate technical problem of caused result has reached the technique effect of the spread speed accuracy for improving sound wave, so that
Improve the accuracy of pumpingh well underground level.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned embodiment of the present invention can be with
Realized with general computing device, they can be concentrated on single computing device, or be distributed in multiple computing devices
On the network for being constituted, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by it
Store and performed by computing device in the storage device, and in some cases, can be held with different from order herein
The shown or described step of row, or they are fabricated to each integrated circuit modules respectively, or by the multiple in them
Module or step are fabricated to single integrated circuit module to realize.So, the embodiment of the present invention is not restricted to any specific hard
Part and software are combined.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the embodiment of the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made
Any modification, equivalent substitution and improvements etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of method for determining pumpingh well underground level, it is characterised in that including：
Obtain wellhead temperature, surface casing pressure and the well head oil pressure of oil well to be measured；
According to the wellhead temperature, the surface casing pressure and the well head oil pressure, determine that sound wave is propagated in the oil well to be measured
Speed；
Obtain configured transmission of the ping in the oil well to be measured；
According to the spread speed and the configured transmission, the underground level of the oil well is determined.
2. method according to claim 1, it is characterised in that obtain configured transmission of the ping in the oil well to be measured
Including：
By the sonic generator at the well head of the oil well to be measured, to sending ping in the oil well to be measured；
During receiving ping propagation downwards by the acoustic receiver at well head, run into petroleum liquid and reflect upwardly
The echo returned；
The time point of the echo will be received and the time difference between the ping is sent, as the configured transmission.
3. method according to claim 1, it is characterised in that according to the wellhead temperature, the surface casing pressure and described
Well head oil pressure, determines sound wave spread speed in the oil well to be measured, including：
The wellhead temperature, the surface casing pressure and the well head oil pressure, substitution are fitted the fit equation for obtaining, obtained in advance
Spread speed of the sound wave in the oil well to be measured.
4. method according to claim 3, it is characterised in that fitting in such a way obtains the fit equation：
Wellhead temperature, surface casing pressure and the well head oil pressure of multiple sample oil wells are obtained, and during the multiple sample oil well difference
Between section sound wave spread speed；
Wellhead temperature, surface casing pressure and well head oil pressure to the multiple sample oil well, and the multiple sample oil well are different
The sound wave spread speed of time period, is fitted, and obtains the fit equation.
5. method according to claim 3, it is characterised in that the fit equation is：
V=-17.6a-1.3b+97c+667
Wherein, V represents sound wave spread speed in the oil well to be measured, and a represents surface casing pressure, and b represents wellhead temperature, and c is represented
Well head oil pressure.
6. a kind of device for determining pumpingh well underground level, it is characterised in that including：
First acquisition module, wellhead temperature, surface casing pressure and well head oil pressure for obtaining oil well to be measured；
First determining module, for according to the wellhead temperature, the surface casing pressure and the well head oil pressure, determining sound wave in institute
State spread speed in oil well to be measured；
Second acquisition module, for obtaining configured transmission of the ping in the oil well to be measured；
Second determining module, for according to the spread speed and the configured transmission, determining the underground liquid level depth of the oil well
Degree.
7. device according to claim 6, it is characterised in that second acquisition module includes：
Transmitting element, for by the sonic generator at the well head of the oil well to be measured, being sent out in the oil well to be measured
Send ping；
Receiving unit, during receiving ping propagation downwards by the acoustic receiver at well head, runs into stone
Oil level reflects back up the echo for coming；
Determining unit, for will receive the time point of the echo and send the time difference between the ping, as institute
State configured transmission.
8. device according to claim 6, it is characterised in that first determining module is specifically for by the well head temperature
Degree, the surface casing pressure and the well head oil pressure, substitution are fitted the fit equation for obtaining in advance, obtain sound wave in the oil to be measured
Spread speed in well.
9. device according to claim 8, it is characterised in that also include：Fitting module, the fitting is obtained for being fitted
Equation：The fitting module includes：
Acquiring unit, wellhead temperature, surface casing pressure and well head oil pressure for obtaining multiple sample oil wells, and the multiple sample
The sound wave spread speed of this oil well different time sections；
Fitting unit, it is for the wellhead temperature to the multiple sample oil well, surface casing pressure and well head oil pressure and the multiple
The sound wave spread speed of sample oil well different time sections, is fitted, and obtains the fit equation.
10. device according to claim 8, it is characterised in that the fit equation is：
V=-17.6a-1.3b+97c+667
Wherein, V represents sound wave spread speed in the oil well to be measured, and a represents surface casing pressure, and b represents wellhead temperature, and c is represented
Well head oil pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233849.9A CN106837305B (en) | 2016-12-28 | 2016-12-28 | Method and device for determining underground liquid level depth of pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233849.9A CN106837305B (en) | 2016-12-28 | 2016-12-28 | Method and device for determining underground liquid level depth of pumping well |
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