CN109765622A - A kind of sector measurement data bearing calibration based on caliper logging instrument - Google Patents
A kind of sector measurement data bearing calibration based on caliper logging instrument Download PDFInfo
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- CN109765622A CN109765622A CN201910169319.XA CN201910169319A CN109765622A CN 109765622 A CN109765622 A CN 109765622A CN 201910169319 A CN201910169319 A CN 201910169319A CN 109765622 A CN109765622 A CN 109765622A
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- logging instrument
- caliper logging
- measurement data
- sector
- hole diameter
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Abstract
The sector measurement data bearing calibration based on caliper logging instrument that the embodiment of the invention discloses a kind of, is related to petroleum well logging technology field, which comprises the normal data of different size casings is measured by caliper logging instrument；The corresponding calibration factor of different size casings is obtained using scale mensuration；Linear measurement formula is obtained according to the normal data of different size casings and calibration factor；The actual measurement data of hole diameter is measured by caliper logging instrument；Actual measurement data is corrected according to linear measurement formula.The present invention was able to solve in the prior art due to the problem of being affected and can not be corrected to measurement result when caliper logging instrument bias.
Description
Technical field
The present embodiments relate to petroleum well logging technology fields, and in particular to a kind of sector measurement based on caliper logging instrument
Data correcting method.
Background technique
The hole diameter arm of caliper logging instrument occurs to uphold under spring force and shrink, and the hypertonic of hole diameter arm is changed
When being converted into the practical progress caliper logging of variation of resistance value, in estimated depth, it will then pass through certain side under instrument
Formula opens hole diameter arm, and then, multiple hole diameter arms are just upheld outward under spring force, and the borehole wall is close in end.With instrument
Device is lifted up, hole diameter arm will due to hole diameter variation and hypertonic occurs, and connecting rod is driven to move up and down.If will be even
The sliding end of the same potentiometer of bar is connected, then the variation of hole diameter can be converted into the variation of resistance.When logical to the swept resistance
When with the electric current of some strength, potential difference between a certain fixing end and sliding end of swept resistance will be with resistance value therebetween
Change and changes.Then, this potential difference is measured using caliper logging software, can reflects the size of hole diameter indirectly.
But in the prior art being self-possessed by instrument, hole deviation is larger, centralizer is partially soft, influences due to casing deformation etc., sound
It is difficult to ensure that being in center condition always, often a kind of eccentric state, thereby results in not Tongfang when wave instrument is run in well
The transmitting probe of each sector on position is different at a distance from the borehole wall, and it is inconsistent to directly influence each sector acoustic transit time, into
And influence the confidence level of data.Acoustic wave apparatus is often in uncertain rotation status in well, and each sector simultaneously does not know to be directed at certain
A direction, therefore final data not can determine that specific orientation.
In previous more sector logging practices, some problems are frequently run onto, being difficult to define is that cementing quality itself causes
Or caused by instrument is eccentric, the means that more do not correct.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of sector measurement data bearing calibration based on caliper logging instrument, to solve
In the prior art due to the problem of being affected and can not be corrected to measurement result when caliper logging instrument bias.
To achieve the goals above, embodiments of the present invention provide the following technical solutions:
A kind of sector measurement data bearing calibration based on caliper logging instrument is provided, which is characterized in that the described method includes:
The normal data of different size casings is measured by caliper logging instrument；
The corresponding calibration factor of different size casings is obtained using scale mensuration；
Linear measurement formula is obtained according to the normal data of different size casings and calibration factor；
The actual measurement data of hole diameter is measured by caliper logging instrument；
Actual measurement data is corrected according to linear measurement formula.
Preferably, the method for the normal data that different size casings are measured by caliper logging instrument includes: by well
Cable diameter gauge is put between two parties in various sizes of casing, topped up with water and is applied more than 3 kPas of pressure in caliper logging instrument, is surveyed
The measurement data for measuring different size casings respectively obtains the corresponding gain G of different size casingsi, i=0,1,2,3.
Preferably, the scale mensuration includes two o'clock scale or multiple spot scale, and the calibration factor includes GRjAnd Offj。
Preferably, the linear measurement formula are as follows: R=GRj*Raw+Offj, j=0,1,2, wherein GRjAnd OffjIt is logical
The calibration factor that scaleover mensuration and caliper logging software are calculated, Raw is hole diameter caliper logging instrument when being original hole diameter
The voltage value of survey.
Preferably, the calibration factor GRjValue are as follows: the variation of the SBT standard value of two neighboring casing is with well radius variations
Slope.
Preferably, the calibration factor GRjCalculation formula are as follows:Wherein SBTR indicates size
For the sound wave sector numerical value of the casing of R, SBTR' indicates the sound wave sector numerical value of the casing having a size of R', and wherein R and R' is adjacent
Size.
Preferably, the casing being closely sized to hole diameter is selected before measuring the real data of the hole diameter, and according to actual
Casing size selects the hole diameter calibration factor GR of correspondingly-sizedjAnd Offj, the parameter of caliper logging software is configured.
Preferably, it is described actual measurement data is corrected according to linear measurement formula before, according to the set of actual selection
Pipe size selects corresponding gain Gi, measurement sound wave numerical value is calculated by caliper logging software.
Embodiment according to the present invention, the present invention has the advantage that the present invention carries out sector by hole diameter data
Correction avoids influencing measurement result when caliper logging instrument bias, can be improved the accuracy rate and working efficiency of site operation.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
The step of Fig. 1 is a kind of sector measurement data bearing calibration based on caliper logging instrument provided in an embodiment of the present invention
Flow chart.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
The present embodiment caliper logging instrument corrects sector using measurement multi-arm borehole measuring instrument immediately, makes each hole diameter and orientation
It is corresponded on data acquisition instrument, thus the three-dimensional hole condition under obtaining three-dimensional system of coordinate, comprising: well track itself, base
In the three-dimensional pit shaft indoor setting of orientation hole diameter, the more sector pit shaft outdoor scene well cementation situations of the solid based on azimuth sector.Well track
Measurement includes: the directioin parameter inclinometer G.I.H by a fixed spacing measuring point on well depth proceeding measurement borehole track, is passed through
The shape of real bored borehole track acquired to the calculating for measuring spacing between each measuring point directioin parameter and measuring point, outside pit shaft indoor setting and pit shaft
Scape well cementation situation can be obtained by the caliper logging software of profession by converting the electrical signal to digital signal.Multi-arm caliper is surveyed
Multiple hole diameter arms of amount form multiple sectors, acquire each sector data, and carry out to the Wave data of each sector record
Processing calculates the time difference of each wavelet such as longitudinal wave, shear wave, Stoneley wave etc., and then obtains each orientation fan on current depth
The longitudinal wave and transverse wave velocity in area, original acoustic wave Wave data are stored in the memory of downhole instrument, and processing result is with side in real time
Formula is transferred to ground by mud-pulse telemetry.With continuing for drilling process, above-mentioned acoustic signals measurement is constantly repeated
And data handling procedure, the longitudinal wave and transverse wave velocity of multiple sectors on different depth are obtained, to realize acoustic imaging, therefore is fanned
Region measurement data are critically important data.
With reference to Fig. 1, the present embodiment provides a kind of the sector measurement data bearing calibration based on caliper logging instrument, the method
Include:
Step S1, the normal data of different size casings is measured by caliper logging instrument,
Specifically, caliper logging instrument is put between two parties in various sizes of casing, topped up with water and is applied in caliper logging instrument
The measurement data for measuring different size casings in 3 kPas of pressure is increased, the corresponding gain of different size casings is respectively obtained
Gi, i=0,1,2,3 respectively correspond the normal sleeve having a size of 4.5 cun, 5 cun, 5.5 cun and 7 cun.
Step S2, the corresponding calibration factor of different size casings is obtained using scale mensuration,
After well logging, it is necessary to be checked with casing inner diameter instrument.Specifically, scale mensuration includes two o'clock scale or more
Point scale, the operating method of two o'clock scale such as: read 8.5 inches with 8 inches of standard rings, use 12 inches of standard ring, read
12.5 inches out.Utilize the worth scale characteristic curve out of two o'clock.As long as determining the equation of this straight line, so that it may each survey
It is y=kx+b that magnitude is converted into such as linearity curve expression formula of the numerical value through scaleover immediately.The calibration factor includes GRjWith
Offj。
Calibration factor GRjValue are as follows: the variation of the SBT standard value of two neighboring casing with well radius variations slope.Scale
Coefficient GRjCalculation formula are as follows:Wherein SBTR indicates the sound wave sector number of the casing having a size of R
Value, SBTR' indicate the sound wave sector numerical value of the casing having a size of R', and wherein R and R' is adjacent size.
Step S3, linear measurement formula is obtained according to the normal data of different size casings and calibration factor；
Specifically, linear measurement formula is R=GRj*Raw+Offj, j=0,1,2 respectively correspond 4.5~5,5~5.5,
5.5~7 cun of hole diameter interval, wherein GRjAnd OffjIt is calculated by scale mensuration and caliper logging software
Calibration factor, Raw is hole diameter caliper logging instrument is surveyed when being original hole diameter voltage value.
Step S4, the actual measurement data of hole diameter is measured by caliper logging instrument；
The casing that selection is closely sized to hole diameter before the real data of measurement hole diameter, and according to actual casing size,
Select the hole diameter calibration factor GR of correspondingly-sizedjAnd Offj, the parameter of caliper logging software is configured.
Step S5, actual measurement data is corrected according to linear measurement formula, by acoustic measurement Data correction to mark
Quasi- set apart from when corresponding data.
Specifically, before being corrected according to linear measurement formula to actual measurement data, the set according to actual selection is needed
Pipe size selects corresponding gain G i, and measurement sound wave numerical value is calculated by caliper logging software.When the well of actual measurement
When diameter data and the larger dimensional discrepancy of normal sleeve, using specific bearing calibration are as follows: when caliper logging instrument passes through standard
When the hole diameter that gain parameter and calibration factor measure differs larger with the size of casing, formula R=GR is utilizedj*Raw+OffjLogarithm
According to being corrected, specifically:
If the casing size chosen is 5.5, and actually measured hole diameter is greater than 5.5, then chooses i=2, j=3, R=5.5,
R'=7 substitutes into formulaGR is calculatedj, and OffjFor the fixed value of correspondingly-sized casing, will count
Obtained GRjAnd OffjSubstitute into formula R=GRj*Raw+Offj, obtain new hole diameter numerical value.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of sector measurement data bearing calibration based on caliper logging instrument, which is characterized in that the described method includes:
The normal data of different size casings is measured by caliper logging instrument；
The corresponding calibration factor of different size casings is obtained using scale mensuration；
Linear measurement formula is obtained according to the normal data of different size casings and calibration factor；
The actual measurement data of hole diameter is measured by caliper logging instrument；
Actual measurement data is corrected according to linear measurement formula.
2. a kind of sector measurement data bearing calibration based on caliper logging instrument as described in claim 1, which is characterized in that institute
The method for stating the normal data for measuring different size casings by caliper logging instrument includes: to be put into caliper logging instrument not between two parties
With in the casing of size, topped up with water and it is applied more than 3 kPas of pressure in caliper logging instrument, measures the survey of different size casings
Data are measured, the corresponding gain G of different size casings is respectively obtainedi, i=0,1,2,3.
3. a kind of sector measurement data bearing calibration based on caliper logging instrument as described in claim 1, which is characterized in that institute
Stating scale mensuration includes two o'clock scale or multiple spot scale, and the calibration factor includes GRjAnd Offj。
4. a kind of sector measurement data bearing calibration based on caliper logging instrument as described in claim 1, which is characterized in that institute
State linear measurement formula are as follows: R=GRj*Raw+Offj, j=0,1,2, wherein GRjAnd OffjTo pass through scale mensuration and hole diameter
The calibration factor that Survey Software is calculated, Raw is hole diameter caliper logging instrument is surveyed when being original hole diameter voltage value.
5. a kind of sector measurement data bearing calibration based on caliper logging instrument as claimed in claim 3, which is characterized in that institute
State calibration factor GRjValue are as follows: the variation of the SBT standard value of two neighboring casing with well radius variations slope.
6. a kind of sector measurement data bearing calibration based on caliper logging instrument as claimed in claim 5, which is characterized in that institute
State calibration factor GRjCalculation formula are as follows:Wherein SBTR indicates the sound wave fan of the casing having a size of R
Area's numerical value, SBTR' indicate the sound wave sector numerical value of the casing having a size of R', and wherein R and R' is adjacent size.
7. a kind of sector measurement data bearing calibration based on caliper logging instrument as described in claim 1, which is characterized in that survey
The casing being closely sized to hole diameter is selected before measuring the real data of the hole diameter, and according to actual casing size, selection is corresponded to
The hole diameter calibration factor GR of sizejAnd Offj, the parameter of caliper logging software is configured.
8. a kind of sector measurement data bearing calibration based on caliper logging instrument as described in claim 1, which is characterized in that institute
It states before being corrected according to linear measurement formula to actual measurement data, corresponding increasing is selected according to the casing size of actual selection
Beneficial Gi, measurement sound wave numerical value is calculated by caliper logging software.
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| CN201910169319.XA CN109765622A (en) | 2019-03-06 | 2019-03-06 | A kind of sector measurement data bearing calibration based on caliper logging instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228046A (en) * | 2020-11-18 | 2021-01-15 | 中国石油天然气集团有限公司 | While-drilling ultrasonic borehole diameter data correction method |
-
2019
- 2019-03-06 CN CN201910169319.XA patent/CN109765622A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228046A (en) * | 2020-11-18 | 2021-01-15 | 中国石油天然气集团有限公司 | While-drilling ultrasonic borehole diameter data correction method |
| CN112228046B (en) * | 2020-11-18 | 2024-04-26 | 中国石油天然气集团有限公司 | Ultrasonic well diameter data correction method while drilling |
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Application publication date: 20190517 |