CN105629316B - Obtain the method and device of the fluid radial direction grease saturation degree variation of undisturbed formation - Google Patents
Obtain the method and device of the fluid radial direction grease saturation degree variation of undisturbed formation Download PDFInfo
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- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
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Abstract
The method and device of the fluid radial direction grease saturation degree variation provided by the invention for obtaining undisturbed formation is by the way that for the undisturbed formation sample under each fathoming in multiple fathom, the data of the constraint fluid in undisturbed formation sample are determined according to the empirical parameter of undisturbed formation sample；According to the data of the constraint fluid in undisturbed formation sample, the fluid data in undisturbed formation sample is obtained；As a whole by the fluid data of undisturbed formation sample, interpolation arithmetic is carried out successively, and the inverse operation of complementary operation and the interpolation arithmetic obtains the fluid T in undisturbed formation sample2Spectrum；Extract fluid T2Oily signal spectrum in spectrum and water signal spectrum, and the fluid oil water saturation obtained in undisturbed formation sample is calculated according to oily signal spectrum and water signal spectrum；According to the fluid oil water saturation of the undisturbed formation sample under multiple fathom, fitting obtains the fluid radial direction grease saturation degree variation of undisturbed formation, makes result more close to true undisturbed formation reserves, accuracy is high.
Description
Technical field
The present invention relates to nuclear magnetic resonance log field more particularly to a kind of fluid radial direction grease saturations obtaining undisturbed formation
Spend the method and device of variation.
Background technology
There is constraint fluid and fluid in undisturbed formation, wherein the grease saturation degree of fluid is to measure to store up in undisturbed formation
The important parameter of amount.By the measurement and calculating of the fluid oil water saturation to original-pack bottom, provided for the exploitation of undisturbed formation
Strong support.
In the prior art, the fluid signal in undisturbed formation is directly measured using multifrequency nuclear magnetic resonance apparatus,
Fluid oil water saturation to obtain undisturbed formation is a kind of common method.Usually by nuclear magnetic resonance apparatus in different frequency
The data that section measures carry out Inversion Calculation after being averaged, to obtain stratum radial fluid saturation degree.
But it during existing survey calculation to grease saturation degree, is measured due to multifrequency nuclear magnetic resonance apparatus
Measurement range very little, measurement range are by chance in the flushed zone of well logging.And in flushed zone, due to fold, drilling fluid etc.
The influence of factor can cause the grease saturation degree of the fluid in flushed zone because these factors generate variation.What meter calculated rushes
Difference will be generated with the true fluid oil water saturation of undisturbed formation by washing the grease saturation degree of the undisturbed formation fluid in band, and
So that the grease saturation degree of the undisturbed formation fluid obtained is not consistent with truth, seriously affects and undisturbed formation reserves are sentenced
It is fixed.
Invention content
The present invention provides a kind of method and device for the fluid radial direction grease saturation degree variation obtaining undisturbed formation, for solving
The grease saturation degree of the undisturbed formation fluid certainly obtained in the prior art and the grease saturation degree of actual undisturbed formation fluid are not
The problem of symbol.
On the one hand, the present invention provides a kind of method for the fluid radial direction grease saturation degree variation obtaining undisturbed formation, including：
For the undisturbed formation sample under each fathoming in multiple fathom, according to the undisturbed formation sample
Empirical parameter determines the data of the constraint fluid in the undisturbed formation sample；
According to the data of the constraint fluid in the undisturbed formation sample, the number of fluids in the undisturbed formation sample is obtained
According to；
As a whole by the fluid data of the undisturbed formation sample, interpolation arithmetic is carried out successively, complementary operation and described
The inverse operation of interpolation arithmetic obtains the fluid T in the undisturbed formation sample2Spectrum；
Extract the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to the oily signal spectrum and the water signal
Spectrum calculates the fluid oil water saturation obtained in the undisturbed formation sample；
According to the fluid oil water saturation of the undisturbed formation sample under the multiple fathom, fitting obtains undisturbed formation
Fluid radial direction grease saturation degree variation.
On the other hand, the present invention also provides it is a kind of obtain undisturbed formation fluid radial direction grease saturation degree variation device,
Including：
First computing module, for for the undisturbed formation sample under each fathoming in multiple fathom, according to
The empirical parameter of the undisturbed formation sample determines the data of the constraint fluid in the undisturbed formation sample；
Second computing module obtains the original state for the data according to the constraint fluid in the undisturbed formation sample
Fluid data in formation samples；
Third computing module, for as a whole, transporting the fluid data of the undisturbed formation sample into row interpolation successively
It calculates, the inverse operation of complementary operation and the interpolation arithmetic obtains the fluid T in the undisturbed formation sample2Spectrum；
4th computing module, for extracting the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to the oil
Signal spectrum and water signal spectrum calculate the fluid oil water saturation obtained in the undisturbed formation sample；
Fitting module is intended for the fluid oil water saturation according to the undisturbed formation sample under the multiple fathom
Close the fluid radial direction grease saturation degree variation for obtaining undisturbed formation.
The method and device of the fluid radial direction grease saturation degree variation of undisturbed formation provided by the invention, it is multiple by being directed to
Undisturbed formation sample under each fathoming in fathoming, according to the determination of the empirical parameter of the undisturbed formation sample
The data of constraint fluid in undisturbed formation sample；According to the data of the constraint fluid in the undisturbed formation sample, institute is obtained
State the fluid data in undisturbed formation sample；As a whole by the fluid data of the undisturbed formation sample, successively into row interpolation
Operation, the inverse operation of complementary operation and the interpolation arithmetic obtain the fluid T in the undisturbed formation sample2Spectrum；Described in extraction
Fluid T2Oily signal spectrum in spectrum and water signal spectrum, and calculate according to the oily signal spectrum and water signal spectrum and obtain the original
Fluid oil water saturation in shape formation samples；It is full according to the fluid grease of the undisturbed formation sample under the multiple fathom
And degree, fitting obtain the fluid radial direction grease saturation degree variation of undisturbed formation.The present invention is obtained by the above method and device
The fluid radial direction grease saturation degree of undisturbed formation changes, so as to pass through the variation pair of the fluid radial direction grease saturation degree of undisturbed formation
The fluid radial direction grease saturation degree for measuring the undisturbed formation obtained is corrected, and makes result of calculation more close to true original state
Layer reserves, accuracy higher provide strong guarantee for stratum exploitation.
Description of the drawings
Fig. 1 is a kind of side of the fluid radial direction grease saturation degree variation for acquisition undisturbed formation that the embodiment of the present invention one provides
The flow diagram of method；
The method institute of the fluid radial direction grease saturation degree variation for the acquisition undisturbed formation that Fig. 2 provides for the embodiment of the present invention one
The fluid radial direction grease saturation degree change schematic diagram of acquisition；
Fig. 3 is a kind of side of fluid radial direction grease saturation degree variation obtaining undisturbed formation provided by Embodiment 2 of the present invention
The flow diagram of method；
Fig. 4 is the fluid T in acquisition undisturbed formation sample provided by Embodiment 2 of the present invention2The schematic diagram of spectrum；
Fig. 5 is a kind of dress of the fluid radial direction grease saturation degree variation for acquisition undisturbed formation that the embodiment of the present invention three provides
The structural schematic diagram set.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
Fig. 1 is a kind of side of the fluid radial direction grease saturation degree variation for acquisition undisturbed formation that the embodiment of the present invention one provides
The flow diagram of method, as shown in Figure 1, this method includes several steps below：
Step 101, for the undisturbed formation sample under each fathoming in multiple fathom, according to the original state
The empirical parameter of layer sample determines the data of the constraint fluid in the undisturbed formation sample.
The executive agent of method of the fluid radial direction grease saturation degree variation provided by the invention for obtaining undisturbed formation can be
Obtain the device of the fluid radial direction grease saturation degree variation of undisturbed formation.
Specifically, undisturbed formation sample includes constraint fluid and fluid, and obtain the fluid radial direction grease of undisturbed formation
The device of saturation degree variation according to the experience of the undisturbed formation sample of the depth by the different places that fathoms, joining respectively
Number determines the data of the constraint fluid in the undisturbed formation sample.Wherein, by obtaining others skilled in the art to the original state
The empirical parameter that the result of study of layer sample obtains or the empirical parameter that undisturbed formation sample progress core experiment is obtained,
Determine that the data of the constraint fluid in the undisturbed formation sample, the data of the constraint fluid specifically may include the T for fettering fluid2
Spectrum, obtains the T of the constraint fluid2The experimental situation parameter of spectrum and the echo etc. for fettering fluid.
Step 102, according in the undisturbed formation sample constraint fluid data, obtain in the undisturbed formation sample
Fluid data.
Specifically, obtaining the device of the fluid radial direction grease saturation degree variation of undisturbed formation according in undisturbed formation sample
The data for fettering fluid calculate the fluid data obtained in undisturbed formation sample.Further, the fluid diameter of undisturbed formation is obtained
The device changed to grease saturation degree can utilize multifrequency nuclear magnetic resonance log instrument to measure the data for obtaining undisturbed formation sample；In original state
The data that the constraint fluid in undisturbed formation sample is screened out in the data of formation samples, obtain the number of fluids in undisturbed formation sample
According to.Since the data of the undisturbed formation sample measured include fettering the data and fluid data of fluid, the original can be used
The data of shape formation samples subtract the data of the constraint fluid in the original state bottom sample obtained in step 101, obtain the original
The fluid data of shape formation samples.
Step 103, by the fluid data of the undisturbed formation sample as a whole, carry out interpolation arithmetic successively, inverting fortune
The inverse operation with the interpolation arithmetic is calculated, the fluid T in the undisturbed formation sample is obtained2Spectrum.
Step 104, the extraction fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to the oily signal spectrum and institute
It states water signal spectrum and calculates the fluid oil water saturation obtained in the undisturbed formation sample.
Specifically, the fluid T in undisturbed formation sample in extraction step 1032Oily signal spectrum in spectrum and water signal spectrum,
And calculate the fluid oil water saturation in the undisturbed formation sample.Further, using multi-factor analysis approach to the fluid T2
Spectrum is analyzed, and the fluid T is obtained2The oily signal spectrum and water signal of spectrum are composed.Wherein, fluid oil water saturation can pass through convection current
Body T2After spectrum is integrated, the area divided by fluid T composed with oily signal spectrum and water signal2The area of spectrum obtains.
Step 105, according to the fluid oil water saturation of the undisturbed formation sample under the multiple fathom, fitting obtains
The fluid radial direction grease saturation degree of undisturbed formation changes.
The method institute of the fluid radial direction grease saturation degree variation for the acquisition undisturbed formation that Fig. 2 provides for the embodiment of the present invention one
The fluid radial direction grease saturation degree change schematic diagram of acquisition.It is measured deeply as illustrated in fig. 2, it is assumed that carrying out 9 times to undisturbed formation sample
Spend different measurements, by the calculating to fluid grease saturation degree, can get 9 fluid oil water saturation angle value, by these values into
Row fitting can obtain the diametrical grease saturation degree change curve of the fluid of the undisturbed formation sample.
Further, when obtain undisturbed formation fluid radial direction grease saturation degree variation after, can by by its with pass through
The theoretical fluid radial direction grease saturation degree that theoretical calculation simulates is compared, and obtains the intrusion curve in the intrusion time, and lead to
The fluid oil water saturation situation that the intrusion curve further appreciates that undisturbed formation is crossed, makes technical staff preferably to undisturbed formation
Reserves estimated.
The embodiment of the present invention one provide acquisition undisturbed formation fluid radial direction grease saturation degree variation method, by
Several constraint fluids determined respectively according to the empirical parameter of undisturbed formation sample in the undisturbed formation sample that fathom
Data；The fluid obtained in the undisturbed formation sample is calculated according to the data of the constraint fluid in the undisturbed formation sample
Data；As a whole by the fluid data of the undisturbed formation sample, interpolation arithmetic, complementary operation and the interpolation are carried out successively
The inverse operation of operation obtains the fluid T in the undisturbed formation sample2Spectrum；Extract the fluid T2Oily signal spectrum in spectrum and water
Signal spectrum, and it is full that the fluid grease obtained in the undisturbed formation sample is calculated according to the oily signal spectrum and water signal spectrum
And degree；According to the fluid oil water saturation of the undisturbed formation sample in each upper acquisition that fathoms, fitting obtains undisturbed formation
Fluid radial direction grease saturation degree variation.The fluid radial direction grease of present invention undisturbed formation as obtained by the above method is saturated
Degree variation, so as to the fluid diameter of the undisturbed formation obtained to measurement according to the variation of the fluid radial direction grease saturation degree of undisturbed formation
It is corrected to grease saturation degree, makes result of calculation more close to true undisturbed formation reserves, accuracy higher is opened for stratum
Hair provides strong guarantee.
Preferably, in order to enable to the fluid T obtained in the undisturbed formation sample2Spectrum is more smooth and accurate, and Fig. 3 is
A kind of flow signal of the method for fluid radial direction grease saturation degree variation obtaining undisturbed formation provided by Embodiment 2 of the present invention
Figure, as shown in figure 3, shown in above-mentioned Fig. 1 on the basis of method, step 103 specifically may include：
The fluid data of the undisturbed formation sample is carried out cubic B-spline function interpolation arithmetic by step 201, is made described
Fluid data is compressed.
Step 202, to carrying out joint inversion by the compressed fluid data, and obtain the fluid data virtual
T2Data in dimension.
Step 203, to the fluid data in virtual T2Data in dimension carry out the cubic B-spline function interpolation fortune
The inverse operation of calculation, and obtain the fluid T in the undisturbed formation sample2Spectrum.
Change for the fluid radial direction grease saturation degree for obtaining undisturbed formation that detailed elaboration the present embodiment two provides
Method, Fig. 4 are the fluid T obtained in undisturbed formation sample that the present embodiment two provides2The schematic diagram of spectrum.
Fig. 4 (A) is the fluid data of undisturbed formation sample, at this time it is found that echo-signal has 8 and each echo-signal
One-way is presented；Fig. 4 (B) is the cubic B-spline function signal described in step 201, that is, uses the cubic B-spline function pair
Fluid data in Fig. 4 (A) carries out interpolation arithmetic, and obtains the fluid data in Fig. 4 (C) after interpolation arithmetic, at this time number of fluids
Data bulk is compressed into 5 echo-signals, and its signal waveform does not change；Then to the compressed stream in Fig. 4 (C)
Volume data carries out joint inversion as unit of entirety, obtains the image in Fig. 4 (D)；Fluid data becomes 5 there are wave crests at this time
T2Spectrum, the T2Spectrum is virtual T2Data in dimension；The data restored shown in such as Fig. 4 (E) and are calculated, specifically
It is the inverse operation of the interpolation arithmetic of B samples function three times shown in Fig. 4 (B), obtains the image in Fig. 4 (F)；At this point, fluid data
8 are restored to, is consistent with the data amount check under truth, and the data in each Fig. 4 (A) are with T2The form of spectrum is in
Now to get to the fluid T in undisturbed formation sample2Spectrum.
Second embodiment of the present invention provides a kind of methods for the fluid radial direction grease saturation degree variation obtaining undisturbed formation, lead to
It crosses and the fluid data of undisturbed formation sample is subjected to cubic B-spline function interpolation arithmetic, so that fluid data is compressed, to being compressed
Fluid data afterwards carries out joint inversion, and obtains fluid data in virtual T2Data in dimension；To fluid data in virtual T2
Data in dimension carry out the inverse operation of the cubic B-spline function interpolation arithmetic, and obtain the fluid T in undisturbed formation sample2
Spectrum, the fluid T to make2Spectrum is more accurate, also more smooth.By to being carried out by the entirety of compressed fluid data
The calculating of joint inversion so that each fluid data can obtain identical inverted parameters, and the inversion result obtained is more smart
It is accurate.
Fig. 5 is a kind of dress of the fluid radial direction grease saturation degree variation for acquisition undisturbed formation that the embodiment of the present invention three provides
The structural schematic diagram set, as shown in figure 5, the embodiment of the present invention three provides a kind of fluid radial direction grease saturation obtaining undisturbed formation
The device of variation is spent, including：
First computing module 10, for for the undisturbed formation sample under each fathoming in multiple fathom, root
The data of the constraint fluid in the undisturbed formation sample are determined according to the empirical parameter of the undisturbed formation sample.
Second computing module 20 obtains the original for the data according to the constraint fluid in the undisturbed formation sample
Fluid data in shape formation samples.
Further, the second computing module 20 can utilize multifrequency nuclear magnetic resonance log instrument to measure the number for obtaining undisturbed formation sample
According to；The data that the constraint fluid in undisturbed formation sample is screened out in the data of undisturbed formation sample, obtain undisturbed formation sample
In fluid data.Since the data of the undisturbed formation sample measured include fettering the data and fluid data of fluid, because
This, can subtract the constraint fluid in the original state bottom sample of the first computing module 10 acquisition with the data of the undisturbed formation sample
Data, obtain the fluid data of the undisturbed formation sample.
Third computing module 30 is used for the fluid data of the undisturbed formation sample as a whole, successively into row interpolation
Operation, the inverse operation of complementary operation and the interpolation arithmetic obtain the fluid T in the undisturbed formation sample2Spectrum.
4th computing module 40, for extracting the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to described
Oily signal spectrum and water signal spectrum calculate the fluid oil water saturation obtained in the undisturbed formation sample.
Specifically, multi-factor analysis approach can be used to the fluid T in the 4th computing module 402Spectrum is analyzed, and institute is obtained
State fluid T2The oily signal spectrum and water signal of spectrum are composed.
Fitting module 50, for the fluid oil water saturation according to the undisturbed formation sample under the multiple fathom,
Fitting obtains the fluid radial direction grease saturation degree variation of undisturbed formation.
It each fathoms down specifically, the first computing module 10 is directed in multiple fathom, according to undisturbed formation sample
This empirical parameter determines the data of the constraint fluid in undisturbed formation sample respectively.Second computing module 20 is calculated according to first
The data of constraint fluid in the undisturbed formation sample that module 10 obtains calculate the fluid data obtained in undisturbed formation sample.The
Three computing modules 30 as a whole, are inserted the fluid data of 20 obtained undisturbed formation sample of the second computing module successively
It is worth operation, the inverse operation of complementary operation and the interpolation arithmetic, and obtains the fluid T in undisturbed formation sample2Spectrum.4th calculates
Module 40 extracts the fluid T of 30 gained of third computing module2Oily signal spectrum in spectrum and water signal spectrum, and according to the oil signal spectrum
The fluid oil water saturation for calculating and obtaining in undisturbed formation sample is composed with the water signal.Fitting module 50 is according to the 4th computing module
The fluid oil water saturation of the 40 undisturbed formation sample under multiple fathom, fitting obtain the radial oil of fluid of undisturbed formation
Water saturation changes.
Further, in order to make the fluid T in the undisturbed formation sample of acquisition2Spectrum is more accurate, and spectral line is more smooth, the
Three computing modules 30 are specifically used for：The fluid data of the undisturbed formation sample is subjected to cubic B-spline function interpolation arithmetic, is made
The fluid data is compressed；To carrying out joint inversion by the compressed fluid data, and obtains the fluid data and exist
Virtual T2Data in dimension；To the fluid data in virtual T2Data in dimension carry out the cubic B-spline function interpolation
The inverse operation of operation, and obtain the fluid T in the undisturbed formation sample2Spectrum.By to by the whole of compressed fluid data
Body carries out the calculating of joint inversion so that each fluid data can obtain identical inverted parameters, and the inversion result of acquisition is more
Add precisely.
It should be noted that the device specific implementation method of the offer of the embodiment of the present invention three is with the embodiment of the present invention one and in fact
The method for applying the offer of example two corresponds to respectively, and this will not be repeated here.
The device of the fluid radial direction grease saturation degree variation for the acquisition undisturbed formation that the embodiment of the present invention three provides, passes through needle
To the undisturbed formation sample under each fathoming in multiple fathom, the empirical parameter according to the undisturbed formation sample is true
The data of constraint fluid in the fixed undisturbed formation sample；According in the undisturbed formation sample constraint fluid data,
Obtain the fluid data in the undisturbed formation sample；As a whole by the fluid data of the undisturbed formation sample, successively into
Row interpolation operation, the inverse operation of complementary operation and the interpolation arithmetic obtain the fluid T in the undisturbed formation sample2Spectrum；It carries
Take the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and calculate and obtain according to the oily signal spectrum and water signal spectrum
Fluid oil water saturation in the undisturbed formation sample；According to the fluid of the undisturbed formation sample under the multiple fathom
Grease saturation degree, fitting obtain the fluid radial direction grease saturation degree variation of undisturbed formation.The present invention passes through the above method and device
The fluid radial direction grease saturation degree of the undisturbed formation of acquisition changes, so as to pass through the fluid radial direction grease saturation degree of undisturbed formation
Change and the fluid radial direction grease saturation degree for measuring the undisturbed formation obtained is corrected, makes result of calculation more close to true
Undisturbed formation reserves, accuracy higher provide strong guarantee for stratum exploitation.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer read/write memory medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or
The various media that can store program code such as person's CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of method for the fluid radial direction grease saturation degree variation obtaining undisturbed formation, which is characterized in that including：
For the undisturbed formation sample under each fathoming in multiple fathom, according to the experience of the undisturbed formation sample
Parameter determines the data of the constraint fluid in the undisturbed formation sample；
According to the data of the constraint fluid in the undisturbed formation sample, the fluid data in the undisturbed formation sample is obtained；
As a whole by the fluid data of the undisturbed formation sample, interpolation arithmetic, complementary operation and the interpolation are carried out successively
The inverse operation of operation obtains the fluid T in the undisturbed formation sample2Spectrum；
Extract the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to the oily signal spectrum and water signal spectrum meter
Calculate the fluid oil water saturation obtained in the undisturbed formation sample；
According to the fluid oil water saturation of the undisturbed formation sample under the multiple fathom, fitting obtains the stream of undisturbed formation
Body radial direction grease saturation degree changes；
Wherein, the fluid data by the undisturbed formation sample as a whole, carries out interpolation arithmetic successively, complementary operation and
The inverse operation of the interpolation arithmetic obtains the fluid T in the undisturbed formation sample2Spectrum, specifically includes：
The fluid data of the undisturbed formation sample is subjected to cubic B-spline function interpolation arithmetic, the fluid data is made to be pressed
Contracting；
To carrying out joint inversion by the compressed fluid data, and the fluid data is obtained in virtual T2Number in dimension
According to；
To the fluid data in virtual T2Data in dimension carry out the inverse operation of the cubic B-spline function interpolation arithmetic, and
Obtain the fluid T in the undisturbed formation sample2Spectrum.
2. according to the method described in claim 1, it is characterized in that, the constraint fluid according in the undisturbed formation sample
Data, obtain the fluid data in the undisturbed formation sample, specifically include：
The data for obtaining the undisturbed formation sample are measured using multifrequency nuclear magnetic resonance log instrument；
From the data of the constraint fluid screened out in the data of the undisturbed formation sample in the undisturbed formation sample, original state is obtained
Fluid data in formation samples.
3. according to the method described in claim 1, it is characterized in that, the extraction fluid T2Oily signal spectrum in spectrum and water
Signal spectrum specifically includes：
Using multi-factor analysis approach to the fluid T2Spectrum is analyzed, and the fluid T is obtained2The oily signal spectrum and water signal of spectrum
Spectrum.
4. a kind of device for the fluid radial direction grease saturation degree variation obtaining undisturbed formation, which is characterized in that including：
First computing module, for for the undisturbed formation sample under each fathoming in multiple fathom, according to described
The empirical parameter of undisturbed formation sample determines the data of the constraint fluid in the undisturbed formation sample；
Second computing module obtains the undisturbed formation for the data according to the constraint fluid in the undisturbed formation sample
Fluid data in sample；
Third computing module, for the fluid data of the undisturbed formation sample as a whole, to be carried out interpolation arithmetic, instead successively
The inverse operation for drilling operation and the interpolation arithmetic obtains the fluid T in the undisturbed formation sample2Spectrum；
4th computing module, for extracting the fluid T2Oily signal spectrum in spectrum and water signal spectrum, and according to the oily signal spectrum
The fluid oil water saturation for calculating and obtaining in the undisturbed formation sample is composed with the water signal；
Fitting module, for the fluid oil water saturation according to the undisturbed formation sample under the multiple fathom, fitting obtains
Obtain the fluid radial direction grease saturation degree variation of undisturbed formation；
Wherein, the third computing module is specifically used for：
The fluid data of the undisturbed formation sample is subjected to cubic B-spline function interpolation arithmetic, the fluid data is made to be pressed
Contracting；
To carrying out joint inversion by the compressed fluid data, and the fluid data is obtained in virtual T2Number in dimension
According to；
To the fluid data in virtual T2Data in dimension carry out the inverse operation of the cubic B-spline function interpolation arithmetic, and
Obtain the fluid T in the undisturbed formation sample2Spectrum.
5. device according to claim 4, which is characterized in that second computing module is specifically used for：
The data for obtaining the undisturbed formation sample are measured using multifrequency nuclear magnetic resonance log instrument；
From the data of the constraint fluid screened out in the data of the undisturbed formation sample in the undisturbed formation sample, original state is obtained
Fluid data in formation samples.
6. device according to claim 4, which is characterized in that the 4th computing module is specifically used for：
Using multi-factor analysis approach to the fluid T2Spectrum is analyzed, and the fluid T is obtained2The oily signal spectrum and water signal of spectrum
Spectrum.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929973A (en) * | 2009-06-22 | 2010-12-29 | 中国石油天然气股份有限公司 | Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| CN103527172A (en) * | 2013-10-16 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司 | Variable rock electric coupling index water saturation calculation method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140817A (en) * | 1998-05-26 | 2000-10-31 | Schlumberger Technology Corporation | Magnetic resonance well logging method and apparatus |
| CN100349013C (en) * | 2005-05-27 | 2007-11-14 | 中国石油天然气股份有限公司 | Method for determining nuclear magnetic resonance logging T2 spectrum T2 cut-off value |
| CA2653265C (en) * | 2007-05-08 | 2014-08-12 | Halliburton Energy Services, Inc. | Fluid conductivity measurement tool and methods |
| US8736263B2 (en) * | 2007-07-26 | 2014-05-27 | Schlumberger Technology Corporation | System and method for estimating formation characteristics in a well |
| US7888933B2 (en) * | 2008-02-15 | 2011-02-15 | Schlumberger Technology Corporation | Method for estimating formation hydrocarbon saturation using nuclear magnetic resonance measurements |
| CN102434152B (en) * | 2011-12-05 | 2014-07-23 | 中国石油天然气股份有限公司 | Method for calculating oil saturation of reservoir |
-
2016
- 2016-01-13 CN CN201610021361.3A patent/CN105629316B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929973A (en) * | 2009-06-22 | 2010-12-29 | 中国石油天然气股份有限公司 | Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| CN103527172A (en) * | 2013-10-16 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司 | Variable rock electric coupling index water saturation calculation method |
Non-Patent Citations (3)
| Title |
|---|
| "多频核磁共振测井评价储层井眼径向流体饱和度变化";王杰 等;《第十八届全国波谱学学术年会论文集》;20141010;文章正文 * |
| "核磁共振测井仪器的最新进展与未来发展方向";肖立志 等;《测井技术》;20031231;第27卷(第4期);第265-269页 * |
| "测井评价_三低_油气藏面临的挑战和发展方向";何雨丹 等;《地球物理学进展》;20050630;第20卷(第2期);第282-288页 * |
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