CN110159253A - A kind of ultrasonic imaging logging method - Google Patents
A kind of ultrasonic imaging logging method Download PDFInfo
- Publication number
- CN110159253A CN110159253A CN201910539419.7A CN201910539419A CN110159253A CN 110159253 A CN110159253 A CN 110159253A CN 201910539419 A CN201910539419 A CN 201910539419A CN 110159253 A CN110159253 A CN 110159253A
- Authority
- CN
- China
- Prior art keywords
- casing
- wave
- ultrasonic
- sleeve pipe
- energy converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003129 oil well Substances 0.000 claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 230000001902 propagating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000035515 penetration Effects 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 239000012071 phase Substances 0.000 abstract description 3
- 239000007790 solid phase Substances 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 102100037354 Ectodysplasin-A Human genes 0.000 description 1
- 101000880080 Homo sapiens Ectodysplasin-A Proteins 0.000 description 1
- 208000024427 X-linked hypohidrotic ectodermal dysplasia Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 208000018617 ectodermal dysplasia 1 Diseases 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
- E21B47/085—Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention discloses a kind of ultrasonic imaging logging method, and rotating detector is connect with energy converter, drives energy converter to be rotated by rotating detector；It motivates a ultrasonic pulse signal to scan 360 ° of oil well to be measured in energy converter rotary course, propagates ultrasonic pulse signal in the fluid of oil well to be measured and be incident on oil well casing inner wall；The ultrasonic wave wave train that measurement is reflected from jacket exterior and internal interface, the echo time of the ultrasonic wave wave train obtains casing inner diameter information based on the received, and the acoustic impedance information of annular space is obtained according to the thickness information of the resonance wave frequency acquisition internal surface of sleeve pipe of casing and resonance wave first wave amplitude.By disposably going into the well, cementing, casing quality are evaluated, shortens measure period, and reduce operating cost.Accurate judgement, more visual understanding annular space phase can be made to solid phase cement, liquid phase water, not cementing microgap, gas.It can recognize casing internal-and external diameter/wall thickness, corrosion condition, rational judgment made to casing corrosion situation.
Description
Technical field
The present embodiments relate to petroleum well logging technology fields, and in particular to a kind of ultrasonic imaging logging method.
Background technique
Currently, entering stage middle and later periods in oil field development, inside and outside the anisotropy of reservoir stress, artificial recharge and well
Phenomena such as long-term influence of the effects of chemical attack of liquid, Casing Failure breakage, deformation, corrosion, becomes increasingly conspicuous.Therefore it covers
The stable yields volume increase that damage is detected as oil gas plays an important role.Casing wall thickness can be detected well using ultrasonic pulse reflection method to believe
Breath, while can be with exact evaluation cementing quality.
In conventional solution, primary cement evaluation is based on CBL and VDL, wherein CBL (cement bond
Logging) cement bond log, VDL (variable density log) variable density log.But with completion mode is different,
Hole condition complexity increases, so that traditional logging technique is unable to satisfy engineering demand.Primary cement evaluation after into 21 century
Technology obtains certain development, using sector cement bonding well logging as representative, such as: the well logging skill such as six sector SBT, eight sector RIB
Art.Cementing and casing mass measurement problem are solved currently, can measure simultaneously there has been no logging technique.Conventional logging technology
Using sound amplitude variable density method, more sector cement bonding logging technique evaluating cementing quality and cementing situation are carried out；Utilize electromagnetism
Method and multi-arm Mechanical Method evaluation casing wall thickness and internal diameter, need to carry out multiple underground survey, and the period is long, and operating cost is high, cannot
Realization once goes into the well while measuring cementing and casing quality.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of ultrasonic imaging logging method, a variety of surveys are obtained by disposably going into the well
Data are measured, while evaluating cementing and casing quality, shorten measurement period, reduce operating cost.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions: a kind of ultrasonic imaging logging method,
The following steps are included: rotating detector is connect with energy converter, the energy converter is driven to be rotated by the rotating detector,
It motivates the ultrasonic pulse signal of a 250~450kHz to be scanned oil well to be measured in the energy converter rotary course, makes
Oil well casing inner wall is propagated in the fluid of oil well to be measured and be incident on to the ultrasonic pulse signal, measurement from jacket exterior and
The ultrasonic wave wave train of internal interface reflection, the echo time of the ultrasonic wave wave train obtains casing inner diameter information based on the received,
According to the thickness information of the resonance wave frequency acquisition internal surface of sleeve pipe of described sleeve pipe, obtained according to the resonance wave first wave amplitude of described sleeve pipe
Take the acoustic impedance information of annular space.
As the preferred embodiment of ultrasonic imaging logging method, the rotating detector connects energy converter driven by the motor
Continuous rotary scanning oil-well wall, when covering oil well casing surface to be measured forms one week map of magnitudes of oil well after a week and then schemes.
As the preferred embodiment of ultrasonic imaging logging method, when the rotating detector scans oil well to be measured, the rotation
Turn probe and continues upward one helix of space tracking for moving and making the energy converter.
As the preferred embodiment of ultrasonic imaging logging method, the ultrasonic pulse signal is incident after propagating in a fluid
To internal surface of sleeve pipe, the ultrasonic pulse signal of sleeve pipe carries out repeatedly between casing and cement sheath and casing and surface of stratum
Reflection obtains the density of propagation medium according to the acoustic impedance of ultrasonic pulse signal, evaluates in the cement sheath cement when glue
Tie situation.
As the preferred embodiment of ultrasonic imaging logging method, from left to right divide 12 for the image that ultrasonic imaging is logged well
Road；
First is magnetic orientation, natural gamma, probe revolving speed and instrument eccentric curve；
Second is to fathom；
Third and fourth road is echo amplitude curve, reacts internal surface of sleeve pipe situation；
Five, the six be casing inside radius minimum value, maximum value and average value, casing outer radius average value；
7th for casing inner diameter value subtract average value be imaged curve, by color gradient react internal surface of sleeve pipe burn into scratch,
Fouling condition；
8th is casing wall thickness maximum value, average value and minimum value；
9th, which subtracts average value for casing thickness, is imaged road, reacts casing wall thickness situation of change by color gradient；
Tenth is cementing acoustic impedance image；
10th one be cementing acoustic impedance solid, liquid, gas, not cementing fine quantitative scoring point counting Butut；
12nd is cementing annular space integrated imaging figure.
As the preferred embodiment of ultrasonic imaging logging method, according to the Thin interbed described sleeve pipe of internal surface of sleeve pipe back wave
Whether there is or not eyelets on inner wall；Under the premise of judging that described sleeve pipe inner wall is perforated, data acquisition is carried out to entire reflection wave
And processing；
Time of arrival (toa) T is reflected from the tail portion looking for holes bottom of the reflection wave received；It is penetrated according to formula perforation
Depth: D=V × T/2 calculates eyelet depth, and wherein V is the velocity of sound of fluid in preforation tunnel.
As the preferred embodiment of ultrasonic imaging logging method, the rotating detector drives the energy converter to be rotated
Speed is 6~8 revolutions per seconds.
As the preferred embodiment of ultrasonic imaging logging method, detection circuit is surveyed when using to the ultrasonic wave wave train of reflection
Hourage and the amplitude peak of echo are measured, and is transmitted to after being digitized by data acquisition circuit using data over cable system
Ground based terminal is handled.
The embodiment of the present invention has the advantages that rotating detector is rotated with certain speed, and energy converter emits 250 to casing
~450kHz ultrasonic beam, energy converter inspire the ultrasonic wave of different frequency, and measurement is reflected back from jacket exterior and internal interface
The ultrasonic wave wave train come.The echo time of the received wave train can evaluate casing inner diameter, and the resonance wave frequency rate of casing provides
Pipe thickness information needed for Casing Detection.By to obtained from initial echo after the processing of the ultrasonic wave wave train casing thickness,
Internal diameter and smoothness of inner wall data, thus evaluable casing corrosion and deformation.By disposably going into the well, cement gel is evaluated
Knot, casing quality, shorten measure period, and reduce operating cost.In terms of cement bond appraisal, can to solid phase cement,
Liquid phase water, not cementing microgap, gas make accurate judgement, more intuitive understanding annular space phase.Context of detection is damaged in set, it can
To identify casing internal-and external diameter/wall thickness, corrosion condition, rational judgment is made to casing corrosion situation；Drilling fluid, water can be applied
The monitoring aspect of mud ring thickness, perforating quality, measurement range are wide.
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.
Fig. 1 is a kind of ultrasonic imaging logging method flow chart provided in the embodiment of the present invention；
Fig. 2 is that AGC adjusts threshold schematic diagram in a kind of ultrasonic imaging logging method provided in the embodiment of the present invention；
Fig. 3 is ultrasonic wave wave train schematic diagram in a kind of ultrasonic imaging logging method provided in the embodiment of the present invention；
Fig. 4 is the log data effect picture of the ultrasonic imaging logging method provided in the embodiment of the present invention.
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.
Referring to Fig. 1, a kind of ultrasonic imaging logging method is provided, comprising the following steps:
S1: rotating detector is connect with energy converter, drives the energy converter to be rotated by the rotating detector；
S2: motivate the ultrasonic pulse signal of a 250~450kHz to oil to be measured in the energy converter rotary course
Well is scanned, and is propagated the ultrasonic pulse signal in the fluid of oil well to be measured and is incident on oil well casing inner wall；
S3: the ultrasonic wave wave train reflected from jacket exterior and internal interface is measured, based on the received the ultrasonic wave wave train
Echo time obtain casing inner diameter information, according to the thickness information of the resonance wave frequency acquisition internal surface of sleeve pipe of described sleeve pipe, root
The acoustic impedance information of annular space is obtained according to the resonance wave first wave amplitude of described sleeve pipe.
In one embodiment of ultrasonic imaging logging method, the rotating detector connects energy converter driven by the motor
Continuous rotary scanning oil-well wall, the speed that rotating detector drives the energy converter to be rotated are 6~8 revolutions per seconds.It is to be measured when covering
Oil well casing surface forms one week map of magnitudes of oil well after a week and then schemes.When the rotating detector scans oil well to be measured,
The rotating detector, which continues upward movement, makes one helix of space tracking of the energy converter.The ultrasonic pulse signal
Internal surface of sleeve pipe is incident on after propagating in a fluid, the ultrasonic pulse signal of sleeve pipe is in casing and cement sheath and casing and ground
Multiple reflections are carried out between layer surface, the density of propagation medium are obtained according to the acoustic impedance of ultrasonic pulse signal, described in evaluation
Cement when cementing situation in cement sheath.
In one embodiment of ultrasonic imaging logging method, according to the Thin interbed described sleeve pipe of internal surface of sleeve pipe back wave
Whether there is or not eyelets on inner wall；Under the premise of judging that described sleeve pipe inner wall is perforated, data acquisition is carried out to entire reflection wave
And processing.Time of arrival (toa) T is reflected from the tail portion looking for holes bottom of the reflection wave received；Depth is penetrated according to formula perforation
Degree: D=V × T/2 calculates eyelet depth, and wherein V is the velocity of sound of fluid in preforation tunnel.The ultrasonic wave wave train of reflection is used
The then hourage of detection circuit measurement echo and amplitude peak, and cable count is utilized after digitizing by data acquisition circuit
Ground based terminal is transmitted to according to Transmission system to be handled.
Specifically, the principle of ultrasonic imaging well logging is that energy converter issues sound wave in present invention implementation, it is laggard to encounter the borehole wall
Row reflection.After instrument receives echo, electronic circuit measures hourage and the amplitude peak of echo, and is digitized.It is all
These information are transmitted to software on ground by data over cable system and are handled.Energy converter driven by the motor, with basic
Constant rate continuous rotation scanning cannula inner wall, is completely covered sleeve surface one week, is formed wellbore one week after uploading to ground
Map of magnitudes and then scheme.When due to the transducer scans borehole wall, rotating detector is constantly being moved upwards, so rotating detector
Real space track be a helix, for no other reason than that rotating detector rotation speed is quickly, so that this helix causes very much
It is close, it can be considered as continuous circular scanning to a certain extent, thus complete wellbore 2D imaging and the map generalization of 3D solid, supply
Explanation personnel analyze the damaged condition of casing, or check the quality of perforation.
Specifically, the software on ground parameter configuration based on exploitation of the embodiment of the present invention is as follows:
| Title | Description | Default value | Unit |
| SFLDS | Real-time Fluid Slowness Source | MANUAL | |
| SFLDV | Real-time Fluid Slowness Value | 220.00 | us/ft |
| RSPR | Reflectance Sampling Period | 0.4167 | us |
| XMIT | XMIT Power Level | LOW | |
| RORI | Reflectance Orientation | AMN | |
| RGAT | Reflectance Gate | 60 | us |
| RNTH | Reflectance Noise Threshold | 25 | mV |
| RDBI | Reflectance Gain | 6 | dB |
| SIGW | Signature Wave | REFLT | |
| AGC | AGC Control | OFF | |
| XHED | Transducer | 1.5" | |
| SCTL | Sweep Control | 8 | us |
| FGAT | Fluid Gate | 20 | us |
| FNTH | Fluid Noise Threshold | 20 | mV |
Controllable command parameter is as follows:
The parameter list of output is as follows:
Referring to fig. 2, when borehole status is good, well radius variations be not very acutely in the case where, it may be considered that using increasing manually
Benefit control, can then select automatic gain on the contrary.The setting of program default is manual gain AGCOFF.AGC ON automatic gain feelings
Under condition, instrument can automatically adjust the yield value of back wave, so that collected reflection wave amplitude is between 1.5V~2.5V.
Gain control is just effective only in the case where selection back wave full-wave train and manual setting gain.It is powered in instrument
Or after resetting, the default value of RDBI is 6dB, and the range of RDBI is 0~69dB, every grade of 3dB.Polar can be passed through
Whether the setting of Display checking R DBI is correct, when AGC is closed, observes the BHTAR curve on PolarDisplay, is ordering
Enable the setting that RDBI is adjusted in control menu.Confirm BHTAR curve average value within the scope of 1.5V~2.5V, if it is not,
Increased or decrease RDBI.Need to check BHTA curve simultaneously.If BHTA curve gain increase when seem it is smooth and
Amplitude becomes smaller, then the value mistake of BHTA, needs to turn down GAIN.It needs to monitor BHTA and BHTAR curve when well logging, because these
Value can change with the change (such as different lithology and borehole diameter) of borehole condition.Wherein, BHTA curve is in transducing
The back wave original signal (removing gain signal) received on device, and BHTAR is in (the band gain of the collected echo-signal in underground
Signal).
At automatic gain (AGC ON), echo amplitude value can be maintained between 1.5V~2.5V, at this time only be needed
Threshold will then be detected be set as 1V can collect echo.But in this case, it may appear that without the original of gain
Echo amplitude is too small, also smaller than real noise, and at this time, noise and echo can have been simultaneously amplified 1.5V by automatic gain
Between~2.5V, to collect wrong echo then, therefore just need the noise filtering for being greater than real echo amplitude
Fall.Back wave Noise gate is set, when the echo not by gain amplification is greater than the Noise gate of setting, is just thought real
Echo reach, otherwise it is assumed that echo does not reach, then return value is maximum value 341us, and amplitude return value is minimum value
0us；
Referring to Fig. 3, Wave Display is observed, adjusts back wave noise gate to minimum value with slightly above non-gain waveform
Baseline noise subject to.Engineer must monitor this value in entire well logging, adjust noise gate when needed, to reach
To best logging effect.
Back wave opening time range is 30us~200us, every grade of interval 1us, default value 60us.Back wave full-wave train
Sample rate is defaulted as 0.417us/ point, can be configured by 0.1667us/ point~every grade of 0.75us/ point 0.0833us/ point；Window
The displayable time range of mouth is sample rate × sampling number (250).Example sample rate is 0.417us/ point, then window is displayable
Time range is (0.417 × 250=104.25us).
First by order control window, sample rate is adjusted to 0.75us/ point, opened by selection display back wave full-wave train
The door time is set as 30us, and window can show that highest time range is 187.5us at this time, then observes Wave Display
Window needs to adjust back wave opening time RGAT if can't see waveform.In big wellbore or slow fluid, waveform
It can just be reached after display window terminal, it is possible to which shown right margin is truncated, and it is straight can to continue growing opening time
It is shown to there is waveform.It is shown with mouse tracking waveform, the position before being placed on Mintrop wave can accordingly show the time of this point, really
It protects all echoes and is less than this point, and opening time RGAT is set as this point value and adds 5~10us, next successively adjust from small to large
Whole sample rate, until all echoes may be displayed in window ranges.
In casing, waveform movement is less, and then there are many variation in open hole well, so when carrying out open-hole logging, especially
It should readjust RGAT when the measurement well section needed for wanting.Mud wave is checked in WaveDisplay, it can
DISPLAY WAVE FLUID is selected from order control window.The Noise gate adjustment of mud wave can refer to back wave Noise gate
3.5.2.7 the case where AGC ON, is adjusted.
The opening time of mud wave has 4 grades altogether, respectively 20,30,40,50us, default value 20us,.It can be with reference to anti-
The opening time of ejected wave is adjusted, and wherein the sample rate of mud wave is 0.1667us/ point, because slurry chamber spacing is fixed, institute
It is relatively more fixed with its waveform arrival time, all echoes can be included in window under 0.1667 sample rate.When adjustment is completed
Afterwards, DISPLAY WAVE, REFL to be selected to return to back wave full-wave train acquisition mode.
After the completion of well logging, data are saved, generate well logging file.
Specifically, from left to right dividing 12 for the image that ultrasonic imaging is logged well；
First is magnetic orientation, natural gamma, probe revolving speed and instrument eccentric curve；
Second is to fathom；
Third and fourth road is echo amplitude curve, reacts internal surface of sleeve pipe situation；
Five, the six be casing inside radius minimum value, maximum value and average value, casing outer radius average value；
7th for casing inner diameter value subtract average value be imaged curve, by color gradient react internal surface of sleeve pipe burn into scratch,
Fouling condition；
8th is casing wall thickness maximum value, average value and minimum value；
9th, which subtracts average value for casing thickness, is imaged road, reacts casing wall thickness situation of change by color gradient；
Tenth is cementing acoustic impedance image；
10th one be cementing acoustic impedance solid, liquid, gas, not cementing fine quantitative scoring point counting Butut；
12nd is cementing annular space integrated imaging figure.
Specifically, the lossless rotten judgment criteria of casing wall is: 1, echo amplitude is high；2, sectional side elevation internal-and external diameter value is regular；3, wall
Thick most sizes values are overlapped；4, the imaging of internal diameter wall thickness is of light color.
Casing corrosion judgment criteria is: 1, echo amplitude is small；2, internal-and external diameter fluctuation is big in sectional side elevation；3, wall thickness most sizes values
Difference is big；4, internal diameter wall thickness imaging color is deep.
Internal diameter corrosion judgment criteria is: 1, echo amplitude difference is high, abnormal jet black colors；2, sectional side elevation inner diameter values it is maximum,
Small value difference is different big；3, wall thickness becomes smaller at aberration value, and color is deep；4, internal diameter becomes larger at aberration value, and color is deep.
Sleeve outer damages rotten judgment criteria: 1, echo amplitude is normal, and internal diameter is normal；2, the imaging of internal diameter difference is of light color.
3, wall thickness difference color is deep.Internal diameter is normal, and wall thickness reduces, sleeve outer corrosion.
In Fig. 4, well 447-451.5m casing abnormal show, minimum wall thickness (MINI W.) is 0.28in (engineering value 0.317in), maximum
Internal diameter is 3.14in (engineering value 3.183in).Determine wall thickness missing 22.65%, internal diameter missing 0.32%.This section of casing inner diameter is not
It changes (in works scope), and wall thickness missing is very serious.Comprehensive judgement sleeve outer heavy corrosion.
Rotating detector of the embodiment of the present invention is rotated with certain speed, and energy converter emits 250~450kHz ultrasound to casing
Wave beam, energy converter inspire the ultrasonic wave of different frequency, measure from jacket exterior and the reflected ultrasonic wave wave of internal interface
Column.The echo time of the received wave train can evaluate casing inner diameter, and the resonance wave frequency rate of casing provides Casing Detection institute
The pipe thickness information needed, first wave amplitude provide annular space acoustic impedance information.By to after the processing of the ultrasonic wave wave train from initial
Casing thickness, internal diameter and smoothness of inner wall data are obtained in echo, thus evaluable casing corrosion and deformation.By primary
Property go into the well, evaluate cementing, casing quality, shorten measure period, and reduce operating cost.In cement bond appraisal side
Face can make accurate judgement, more intuitive understanding annular space phase to solid phase cement, liquid phase water, not cementing microgap, gas.
Context of detection is damaged in set, casing internal-and external diameter/wall thickness, corrosion condition can be identified, rational judgment is made to casing corrosion situation；It can
Using the monitoring aspect of drilling fluid, cement thickness, perforating quality, measurement range is wide.
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 ultrasonic imaging logging method, which comprises the following steps:
Rotating detector is connect with energy converter, drives the energy converter to be rotated by the rotating detector；
The ultrasonic pulse signal of a 250~450kHz is motivated to sweep oil well to be measured in the energy converter rotary course
It retouches, propagate the ultrasonic pulse signal in the fluid of oil well to be measured and is incident on oil well casing inner wall；
The ultrasonic wave wave train that measurement is reflected from jacket exterior and internal interface, based on the received when the echo of the ultrasonic wave wave train
Between obtain casing inner diameter information, according to the thickness information of the resonance wave frequency acquisition internal surface of sleeve pipe of described sleeve pipe, according to the set
The resonance wave first wave amplitude of pipe obtains the acoustic impedance information of annular space.
2. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that the rotating detector is in motor
Drive under so that energy converter continuous rotation is scanned oil-well wall, form oil well after a week one week when covering oil well casing surface to be measured
Map of magnitudes and then scheme.
3. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that when the rotating detector scans
When oil well to be measured, the rotating detector, which continues upward movement, makes one helix of space tracking of the energy converter.
4. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that the ultrasonic pulse signal
Internal surface of sleeve pipe is incident on after propagating in a fluid, the ultrasonic pulse signal of sleeve pipe is in casing and cement sheath and casing and ground
Multiple reflections are carried out between layer surface, the density of propagation medium are obtained according to the acoustic impedance of ultrasonic pulse signal, described in evaluation
Cement when cementing situation in cement sheath.
5. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that by ultrasonic imaging well logging
Image from left to right divides 12；
First is magnetic orientation, natural gamma, probe revolving speed and instrument eccentric curve；
Second is to fathom；
Third and fourth road is echo amplitude curve, reacts internal surface of sleeve pipe situation；
Five, the six be casing inside radius minimum value, maximum value and average value, casing outer radius average value；
7th, which subtracts average value for casing inner diameter value, is imaged curve, reacts internal surface of sleeve pipe burn into scratch, fouling by color gradient
Situation；
8th is casing wall thickness maximum value, average value and minimum value；
9th, which subtracts average value for casing thickness, is imaged road, reacts casing wall thickness situation of change by color gradient；
Tenth is cementing acoustic impedance image；
10th one be cementing acoustic impedance solid, liquid, gas, not cementing fine quantitative scoring point counting Butut；
12nd is cementing annular space integrated imaging figure.
6. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that according to internal surface of sleeve pipe back wave
Thin interbed described sleeve pipe inner wall on whether there is or not eyelets；Under the premise of judging that described sleeve pipe inner wall is perforated, to entire reflection
Wave waveform carries out data acquisition and processing (DAP)；
Time of arrival (toa) T is reflected from the tail portion looking for holes bottom of the reflection wave received；According to formula perforation penetration:
D=V × T/2 calculates eyelet depth, and wherein V is the velocity of sound of fluid in preforation tunnel.
7. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that the rotating detector drives institute
Stating the speed that energy converter is rotated is 6~8 revolutions per seconds.
8. a kind of ultrasonic imaging logging method according to claim 1, which is characterized in that the ultrasonic wave wave train of reflection
The hourage of detection circuit measurement echo and amplitude peak when using, and electricity is utilized after digitizing by data acquisition circuit
Cable data transmission system is transmitted to ground based terminal and is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539419.7A CN110159253A (en) | 2019-06-20 | 2019-06-20 | A kind of ultrasonic imaging logging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539419.7A CN110159253A (en) | 2019-06-20 | 2019-06-20 | A kind of ultrasonic imaging logging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159253A true CN110159253A (en) | 2019-08-23 |
Family
ID=67626339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910539419.7A Pending CN110159253A (en) | 2019-06-20 | 2019-06-20 | A kind of ultrasonic imaging logging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159253A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442747A (en) * | 2020-03-13 | 2020-07-24 | 中核武汉核电运行技术股份有限公司 | Ultrasonic signal processing method |
| CN114198083A (en) * | 2020-08-31 | 2022-03-18 | 中石化石油工程技术服务有限公司 | Eight-sector cement bond logging data correction method |
| CN114740532A (en) * | 2022-03-18 | 2022-07-12 | 电子科技大学 | Method for calculating cement acoustic impedance and mud acoustic impedance |
| CN115234225A (en) * | 2022-07-29 | 2022-10-25 | 中国石油大学(华东) | Sound wave remote detection data quality detection method |
| CN115653566A (en) * | 2022-10-09 | 2023-01-31 | 中油奥博(成都)科技有限公司 | Ultrasonic imaging logging device based on optical fiber acoustic sensing and measuring method thereof |
| CN115698468A (en) * | 2020-05-29 | 2023-02-03 | 沙特阿拉伯石油公司 | System and method for acoustic imaging of a borehole during drilling |
| CN115992692A (en) * | 2023-03-23 | 2023-04-21 | 中海油田服务股份有限公司 | Cement ring thickness measuring method and device, electronic equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5763773A (en) * | 1996-09-20 | 1998-06-09 | Halliburton Energy Services, Inc. | Rotating multi-parameter bond tool |
| US6483777B1 (en) * | 1998-01-06 | 2002-11-19 | Schlumberger Technology Corporation | Method and apparatus for ultrasonic imaging of a cased well |
| CN1863986A (en) * | 2003-08-08 | 2006-11-15 | 普拉德研究及发展公司 | Multimode acoustic imaging in cased wells |
| CN105134170A (en) * | 2015-09-11 | 2015-12-09 | 中国科学院声学研究所 | Method for evaluating cement bond quality of two interfaces of cased well |
| CN106383173A (en) * | 2016-09-13 | 2017-02-08 | 中国海洋石油总公司 | Cement acoustic impedance calculation method and device |
-
2019
- 2019-06-20 CN CN201910539419.7A patent/CN110159253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5763773A (en) * | 1996-09-20 | 1998-06-09 | Halliburton Energy Services, Inc. | Rotating multi-parameter bond tool |
| US6483777B1 (en) * | 1998-01-06 | 2002-11-19 | Schlumberger Technology Corporation | Method and apparatus for ultrasonic imaging of a cased well |
| CN1863986A (en) * | 2003-08-08 | 2006-11-15 | 普拉德研究及发展公司 | Multimode acoustic imaging in cased wells |
| CN105134170A (en) * | 2015-09-11 | 2015-12-09 | 中国科学院声学研究所 | Method for evaluating cement bond quality of two interfaces of cased well |
| CN106383173A (en) * | 2016-09-13 | 2017-02-08 | 中国海洋石油总公司 | Cement acoustic impedance calculation method and device |
Non-Patent Citations (6)
| Title |
|---|
| 冯启宁: "《石油大学出版社》", 31 October 1992 * |
| 刘波等: "改善声成像仪器套管探伤效果的方法探讨", 《中国石油和化工标准与质量》 * |
| 强毓明等: "超声固井质量检测仪及其应用", 《测井技术》 * |
| 汤宏平等: "IBC套后成像测井在水平井中的应用", 《石油天然气学报》 * |
| 王鹏: "超声成像测井在吐哈油田套管检测中的应用", 《新疆石油天然气》 * |
| 郝仲田等: "多功能超声成像测井仪套损检测的实例分析", 《国外测井技术》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442747A (en) * | 2020-03-13 | 2020-07-24 | 中核武汉核电运行技术股份有限公司 | Ultrasonic signal processing method |
| CN111442747B (en) * | 2020-03-13 | 2021-11-30 | 中核武汉核电运行技术股份有限公司 | Ultrasonic signal processing method |
| CN115698468A (en) * | 2020-05-29 | 2023-02-03 | 沙特阿拉伯石油公司 | System and method for acoustic imaging of a borehole during drilling |
| CN114198083A (en) * | 2020-08-31 | 2022-03-18 | 中石化石油工程技术服务有限公司 | Eight-sector cement bond logging data correction method |
| CN114740532A (en) * | 2022-03-18 | 2022-07-12 | 电子科技大学 | Method for calculating cement acoustic impedance and mud acoustic impedance |
| CN114740532B (en) * | 2022-03-18 | 2023-05-30 | 电子科技大学 | Cement acoustic impedance and slurry acoustic impedance calculation method |
| CN115234225A (en) * | 2022-07-29 | 2022-10-25 | 中国石油大学(华东) | Sound wave remote detection data quality detection method |
| CN115653566A (en) * | 2022-10-09 | 2023-01-31 | 中油奥博(成都)科技有限公司 | Ultrasonic imaging logging device based on optical fiber acoustic sensing and measuring method thereof |
| CN115992692A (en) * | 2023-03-23 | 2023-04-21 | 中海油田服务股份有限公司 | Cement ring thickness measuring method and device, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110159253A (en) | A kind of ultrasonic imaging logging method | |
| US9328606B2 (en) | Method and device to measure perforation tunnel dimensions | |
| US10392920B2 (en) | Method and system of quantitative cement evaluation using logging while drilling | |
| US4703427A (en) | Method for evaluating the quality of cement surrounding the casing of a borehole | |
| US4255798A (en) | Method and apparatus for acoustically investigating a casing and cement bond in a borehole | |
| US8794062B2 (en) | Early kick detection in an oil and gas well | |
| CA2014875C (en) | Logging method and apparatus for acoustic inspection of a borehole fitted with casing | |
| US9109433B2 (en) | Early kick detection in an oil and gas well | |
| US7639563B2 (en) | Method for sonic indication of voids in casing cement | |
| US11015427B2 (en) | System and method for quantitative cement bond evaluation | |
| RU2528279C1 (en) | Acoustic waveform stacking by grouping based on azimuth angles and/or deviations of logging probe | |
| NO20130247A1 (en) | Installation of acoustic transducers and method for estimating the geometry of a borehole in the subsoil | |
| US11726225B2 (en) | Detection and evaluation of ultrasonic subsurface backscatter | |
| US20050128873A1 (en) | Acoustic device and method for determining interface integrity | |
| CN112780259B (en) | Method and device for determining well cementation quality and storage medium | |
| JPS63173988A (en) | Boring remote observation mud mass monitor | |
| US10539698B2 (en) | Determining a quantitative bond using signal attenuation | |
| GB2333155A (en) | Acoustic measurement while drilling system using compressional waves reflected from within formation | |
| US10408052B2 (en) | Measuring frequency-dependent acoustic attenuation | |
| GB2608933A (en) | Self-calibrated method of determining borehole fluid acoustic properties | |
| WO2013126388A1 (en) | Early kick detection in an oil and gas well | |
| US20160265340A1 (en) | Cementing job evaluation systems and methods for use with novel cement compositions including resin cement | |
| US8077545B2 (en) | Method for detecting gas influx in wellbores and its application to identifying gas bearing formations | |
| CN116084917A (en) | Testing device and testing method for sleeve loss while drilling and well cementation quality evaluation | |
| CN115166831A (en) | Acoustic logging method for guiding fracturing and sidetracking operations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190823 |