CN109147449A - With the analogy method and device for boring nuclear magnetic resonance vibration and rotation - Google Patents
With the analogy method and device for boring nuclear magnetic resonance vibration and rotation Download PDFInfo
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- CN109147449A CN109147449A CN201810911046.7A CN201810911046A CN109147449A CN 109147449 A CN109147449 A CN 109147449A CN 201810911046 A CN201810911046 A CN 201810911046A CN 109147449 A CN109147449 A CN 109147449A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/40—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for geology
Abstract
The present invention provides a kind of analogy method and device vibrated and rotated with nuclear magnetic resonance is bored, which includes: with brill nuclear magnetic resonance modeling logging instrument, stratum simulator, telecontrol equipment；Telecontrol equipment executes movement with brill nuclear magnetic resonance modeling logging instrument for driving；It is used to carry out logging operation to the simulated formation in the simulator of stratum with nuclear magnetic resonance modeling logging instrument is bored, when static with brill nuclear magnetic resonance modeling logging instrument, the spin echo string that output obtains under quiet state, when being in different motion state with brill nuclear magnetic resonance modeling logging instrument, the spin echo string obtained under corresponding motion state is exported；Wherein, the spin echo string obtained respectively under at least one motion state and stationary state, for obtaining the spin echo string calibration curve under at least one motion state；These spin echo string calibration curves are for correcting the spin echo string obtained in practical logging.The T that spin echo string inverting after correction obtains2Spectrum can more really reflect formation characteristics.
Description
Technical field
The invention mainly relates to NMR while drilling technologies, more particularly to the mould for boring nuclear magnetic resonance vibration and rotation
Quasi- method and device.
Background technique
Nuclear magnetic resonance log is to be logged well by the hydrogen nuclei in stratum to the response of external magnetic field, detailed process
Are as follows: apply the drawing of frequency Yu proton magnetic moments precession on the direction perpendicular to magnetostatic field to the nuclear spin system in magnetostatic field
The identical alternating electromagnetic field of More (Larmor) frequency, so that the energy jump that proton magnetic moment is provided by absorbing alternating electromagnetic field
To upper state.After alternating electromagnetic field revocation, hydrogen nuclei generates one since relaxation process has upper state to return to lower state
Group spin echo signal, the peak value of spin echo signal is exactly spin echo string.T is obtained by spin echo string inverting2Spectrum, from
And the important information of reflection stratum physical characteristic can be obtained.
Wherein, NMR while drilling is one kind of nuclear magnetic resonance log, since NMR while drilling possesses side
The characteristics of side is surveyed is bored, drilling direction, also, NMR while drilling can be adjusted according to the information measured in drilling process
It can also be bored in high angle hole and horizontal well dynamic.Therefore currently, NMR while drilling technology is widely used in oil field survey
In well.When using NMR while drilling, pass through in well logging for important informations such as the physical characteristics on understanding stratum
Stratum spin echo string signal is measured, reflects formation information in real time.
But since NMR while drilling can adjust drilling direction in drilling process, motion state is complicated, leads
The stratum spin echo string signal for causing NMR while drilling to obtain is bored movable property life by complicated motion state and drill bit
Vibration influence, then lead to the T obtained by stratum spin echo string signal inverting2Spectrum cannot really reflect stratum object
Manage feature.
Summary of the invention
The present invention provides a kind of analogy method and device vibrated and rotated with nuclear magnetic resonance is bored, for simulating practical logging
When with nuclear magnetic resonance caliper motion state in the earth formation is bored, to obtain the spin echo string under different motion state.
The first aspect of the invention is to provide a kind of with the simulator for boring nuclear magnetic resonance vibration and rotation, the device packet
It includes: with brill nuclear magnetic resonance modeling logging instrument, stratum simulator, telecontrol equipment.
Wherein, simulated formation is provided in the stratum simulator.
It is described with bore nuclear magnetic resonance modeling logging instrument, to export spin echo string.
The telecontrol equipment is connect with described with brill nuclear magnetic resonance modeling logging instrument, described with brill nuclear magnetic resonance for driving
Modeling logging instrument executes movement, is respectively at least one motion state with brill nuclear magnetic resonance modeling logging so as to described.
It is described to be placed in the stratum simulator with nuclear magnetic resonance modeling logging instrument is bored, for the stratum mould
Simulated formation in quasi- device carries out logging operation, and when described static with brill nuclear magnetic resonance modeling logging instrument, output is in quiet
The spin echo string obtained under state, it is described with bore nuclear magnetic resonance modeling logging instrument be in different motion state when, export pair
Answer the spin echo string obtained under motion state.
Wherein, the spin echo string that is obtained respectively under an at least motion state and the lower acquisition that remains static from
Cycle wave train, for obtaining the spin echo string calibration curve under at least one motion state；At least one motion state
Under spin echo string calibration curve for correct during NMR while drilling instrument logs well to actual formation
The spin echo string of acquisition.
In a kind of possible embodiment, the motion state includes: the direction of motion and movement velocity.
In a kind of possible embodiment, the direction of motion is N kind, and the corresponding movement velocity of each direction of motion is
At least one, the N are the integer greater than 0；The direction of motion in the motion state includes: the M kind fortune in the N kind direction of motion
Dynamic direction, the M are the integer more than or equal to 1 and less than or equal to N；Movement velocity in the motion state includes: the movement of M kind
The corresponding any movement velocity of every kind of direction of motion in direction.
In a kind of possible embodiment, N is equal to 3, and 3 kinds of directions of motion include transverse movement, axial movement, indulge
To movement.
In a kind of possible embodiment, the telecontrol equipment includes: transverse moving device, axial-movement devices, indulges
To telecontrol equipment, connecting rod；
Wherein, the connecting rod for connect it is described with bore nuclear magnetic resonance modeling logging instrument and the transverse moving device,
Axial-movement devices, longitudinal movement device.
The transverse moving device, it is described with brill nuclear magnetic resonance modeling logging instrument execution for being driven by the connecting rod
Transverse movement.
The axial-movement devices, it is described with brill nuclear magnetic resonance modeling logging instrument execution for being driven by the connecting rod
It is axially moved.
The longitudinal movement device, it is described with brill nuclear magnetic resonance modeling logging instrument execution for being driven by the connecting rod
Longitudinal movement.
In a kind of possible embodiment, the transverse moving device includes: horizontal bearing plate and moving vehicle, described
Sliding rail is provided on horizontal bearing plate.
Wherein, the moving vehicle is connect with the connecting rod, when the moving vehicle is slided along the sliding rail, is driven
It is described to execute transverse movement with brill nuclear magnetic resonance modeling logging instrument.
In a kind of possible embodiment, the axial-movement devices include: electronic device.
Wherein, the electronic device is connect with the connecting rod, in electronic device rotation, drive it is described with
It bores nuclear magnetic resonance modeling logging instrument and executes axial movement.
In a kind of possible embodiment, the longitudinal movement device includes: two pulleys and connecting rope, the connection
Rope is connect with connecting rod, and is also connected with described two pulleys.
Wherein, it in the connecting rope stress, drives described with brill nuclear magnetic resonance modeling logging instrument execution longitudinal movement.
In a kind of possible embodiment, the simulated formation has the rock object of the respective layer rock of down-hole formation
Property.
The second aspect of the invention is to provide a kind of analogy method vibrated and rotated with nuclear magnetic resonance is bored, and is applied to such as
First aspect is of the present invention in the simulator for boring nuclear magnetic resonance vibration and rotation.
This method comprises:
It is described with bore nuclear magnetic resonance modeling logging instrument under static state, to the simulated formation in the stratum simulator
Logging operation is carried out, the spin echo string obtained under stationary state is exported；
The telecontrol equipment moves described in driving with brill nuclear magnetic resonance modeling logging instrument, so as to described with brill nuclear magnetic resonance mould
Pseudolog instrument is respectively at least one motion state；
It is described that logging operation is carried out to the simulated formation in the stratum simulator with brill nuclear magnetic resonance modeling logging instrument,
And when being in different motion state, the spin echo string obtained under corresponding motion state is exported.
The present invention provides a kind of analogy method and device vibrated and rotated with nuclear magnetic resonance is bored, by with brill nuclear magnetic resonance
Modeling logging instrument, stratum simulator, telecontrol equipment simulation are with the motion state for boring nuclear magnetic resonance caliper actual well drilled, simultaneously
Acquisition is under different motion state and the spin echo string under stationary state with nuclear magnetic resonance modeling logging instrument is bored.Pass through difference
Spin echo string under motion state and under stationary state can obtain the spin echo string calibration curve under different motion state,
Spin echo string calibration curve is for correcting the spin echo string obtained in practical logging.Spin echo string inverting after correction obtains
The T arrived2Spectrum is able to reflect more true formation characteristics, to provide more accurate down-hole information for well logging personnel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is NMR while drilling simulator schematic diagram provided by the invention；
Fig. 2 is the structural schematic diagram for the transverse moving device 31 that one embodiment of the invention provides；
Fig. 3 is the structural schematic diagram for the axial-movement devices 32 that one embodiment of the invention provides；
Fig. 4 is the structural schematic diagram for the axial-movement devices 33 that one embodiment of the invention provides；
Fig. 5 is method flow of the simulation provided by the invention with the embodiment one for the method for boring nuclear magnetic resonance vibration and rotation
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Conventionally, as NMR while drilling can adjust drilling direction in drilling process, shape is moved
State is complicated, and the stratum spin echo string signal for causing NMR while drilling to obtain is by complicated motion state and drill bit
The influence for boring the raw vibration of movable property, then leads to the T obtained by stratum spin echo string signal inverting2Spectrum cannot be really anti-
Reflect stratum physical features.
In view of the above problem, the present invention provides a kind of with the simulator for boring nuclear magnetic resonance vibration and rotation, can
NMR while drilling instrument motion state that may be present when simulating practical logging, obtain under compound movement state from cycle
Wave train.
Technical solution of the present invention is described in detail below by specific embodiment.These are specific real below
Applying example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is NMR while drilling simulator schematic diagram provided by the invention.As shown in Figure 1, total with nuclear-magnetism is bored
The simulator of vibrational and rotation includes: with brill nuclear magnetic resonance modeling logging instrument 1, stratum simulator 2, telecontrol equipment 3.
Simulated formation 21 is provided in stratum simulator 2.Wherein, stratum simulator 2 is engraved by two radiuses are different
Hollow cylinder nesting forms, and two cylindrical body centers of circle are in same position.Wherein, the lesser cylindrical body hollow out of radius is formed
Hole is used to simulate wellbore.Circular cylinder between two cylindrical bodies is made of multiple grid, is not connected between each grid, can be filled out
Silt, rock or various fluids etc. are filled, to form simulated formation, to carry out the stratum simulation of various properties.Also, in order to
Guarantee that the material of production stratum simulator 2 does not influence with the spin for boring the simulated formation that nuclear magnetic resonance modeling logging instrument 1 measures
Echo, so the partition part between the grid of stratum simulator 2 is all made of glass reinforced plastic, polytetrafluoroethylene (PTFE) etc. without protium
Material be made, guarantee on NMR signal without influence.
Wherein, it is used to the hole that the lesser cylindrical body hollow out of radius in stratum simulator 2 is formed to simulate wellbore, so that with
Nuclear magnetic resonance modeling logging instrument 1 is bored when simulating practical logging, is not needed using drilling equipment, so as to avoid using drilling well to set
It when for being surveyed in brill, being vibrated since drilling equipment is generated when boring dynamic, causing to vibrate with brill nuclear magnetic resonance modeling logging instrument 1, from
And cause to change with the measured zone for the spin echo string for boring nuclear magnetic resonance modeling logging instrument measurement simulated formation, influence mould
The problem of spin echo string accuracy on quasi- stratum.
In some embodiments, the simulated formation has the physical properties of rock of the respective layer rock of down-hole formation.
Simulated formation is formed by filling silt, rock or various fluids etc. in the grid into stratum simulator 2
The consistent simulated formation of respective layer rock lithology physical property with down-hole formation.Wherein, when down-hole formation is practical logging, with brill
The stratum of wellbore locating for NMR logging instrument.Such as: down-hole formation by upper direction directed downwardly, be followed successively by lithosphere a,
Lithosphere b, lithosphere c, lithosphere d etc. then fill silt, rock or various fluids etc. into stratum simulator 2, make to simulate
Stratum by upper direction directed downwardly successively are as follows: the prosthetic graft of the rock behavio(u)r with lithosphere a, the rock with lithosphere b
The prosthetic graft of characteristic, the prosthetic graft of rock behavio(u)r with lithosphere c, rock behavio(u)r with lithosphere d artificial rock
Stone etc..
With nuclear magnetic resonance modeling logging instrument 1 is bored, for exporting spin echo string.It can with nuclear magnetic resonance modeling logging instrument 1 is bored
To generate magnetostatic field and RF magnetic field to generate NMR signal, meanwhile, simulation is received with nuclear magnetic resonance modeling logging instrument 1 is bored
The spin echo signal on stratum is showed in the form of high-low voltage signal, finally, high-low voltage signal is transformed into simulation
The spin echo string on stratum.
Telecontrol equipment 3 is connect with brill nuclear magnetic resonance modeling logging instrument 1, described with brill nuclear magnetic resonance simulation survey for driving
Well instrument executes movement, to be respectively at least one motion state with brill nuclear magnetic resonance modeling logging 1.Wherein, telecontrol equipment 3
It is mounted on the top of stratum simulator 2.
It with nuclear magnetic resonance modeling logging instrument 1 is bored, is placed in the stratum simulator 2, for being simulated to the stratum
Simulated formation in device 2 carries out logging operation, and when described static with brill nuclear magnetic resonance modeling logging instrument 1, output is in quiet
The spin echo string obtained under state, it is described with bore nuclear magnetic resonance modeling logging instrument 1 be in different motion state when, export pair
Answer the spin echo string obtained under motion state.
It is arranged in the simulation wellbore of stratum simulator 2 with nuclear magnetic resonance modeling logging instrument 1 is bored, opens total with nuclear-magnetism is bored
Magnetostatic field and RF magnetic field in vibration modeling logging instrument 1 are also easy to produce NMR signal and spin echo signal receiving device.
Then, the center that will be placed in simulation wellbore with nuclear magnetic resonance modeling logging instrument 1 is bored, measurement are surveyed with nuclear magnetic resonance simulation is bored
Spin echo string when well instrument 1 is static.Then, it is driven with brill nuclear magnetic resonance modeling logging instrument 1 by telecontrol equipment 3 in simulation well
The motion state of NMR while drilling instrument when simulating practical logging in eye, when telecontrol equipment 3 drives with brill nuclear magnetic resonance mould
When pseudolog instrument 1 is in a kind of motion state, the spin echo string under the state is exported.
Wherein, the spin echo string obtained respectively under at least one motion state and the lower acquisition that remains static
Spin echo string, for obtaining the spin echo string calibration curve under at least one motion state；At least one movement shape
Spin echo string calibration curve under state is for correcting the process logged well in NMR while drilling instrument to actual formation
The spin echo string of middle acquisition.
In some embodiments, it obtains the spin echo string calibration curve under at least one motion state and utilizes spin
The spin echo that echo calibration curve correction NMR while drilling instrument obtains during logging well to actual formation
The step of string, comprising:
Step 1 is directed to every kind of motion state, according to the spin echo string exported under the motion state be in static
The spin echo string exported under state obtains the spin echo string calibration curve under the motion state, to establish the motion state
With the corresponding relationship of the spin echo string calibration curve under the motion state.
In the present embodiment, according to the range value of the spin echo string exported under the motion state, and it is in static shape
The range value of the spin echo string exported under state obtains the spin echo string calibration curve under the movement state.
Wherein, since the range value of spin echo string changes over time, thus determine under every kind of motion state from cycle
When wave train calibration curve, by range value of the standard spin echo string in time t and spin echo string to be corrected in the t in the time
Range value compare, obtain correction coefficient when time t.Shown in the calculation formula of correction coefficient such as formula (1):
Wherein, t indicates the moment, and u indicates correction coefficient when moment t, atIndicate standard spin echo string at moment t
Range value, btIndicate range value of the spin echo string to be corrected at moment t, the application does not limit atAnd btUnit magnitude, only
Guarantee atAnd btUnit it is identical.It should be noted that the correction coefficient in the present embodiment is not limited to formula as above (1) calculating
It obtains, such as can be also formula (2):
When correction coefficient is obtained by formula (1), under every kind of motion state, according to formula (1), first in per a period of time
It carves, by the standard spin echo string at corresponding moment compared with the range value of spin echo string to be corrected, obtains the school at each moment
Positive coefficient, thus the correction coefficient under different moments.Then, rectangular coordinate system is established, abscissa indicates the time, and ordinate indicates
Correction coefficient fastens the correction coefficient found on corresponding abscissa at any time t in rectangular co-ordinate.Finally, in rectangular co-ordinate
Fasten, the correction coefficient of corresponding different moments connected with smooth curve, obtain under every kind of motion state from cycle
Wave train calibration curve.
For example, with nuclear magnetic resonance modeling logging instrument is bored in motion state 1 in simulator, in moment t1When, standard is certainly
The range value of cycle wave train is a1, the range value of spin echo string to be corrected is b1, moment t is obtained according to formula (1)1When school
Positive coefficient u1.In moment t2When, the range value of standard spin echo string is a2, the range value of spin echo string to be corrected is b2, root
Moment t is obtained according to formula (1)2When correction coefficient u2.Until when the moment.The range value of standard spin echo string is an, to be corrected
The range value of spin echo string is bn, moment t is obtained according to formula (1)nWhen correction coefficient un.Then, it is fastened in rectangular co-ordinate
Find point (t1, u1)、(t2, u2)、…、(tn, un).Finally by (t1, u1)、(t2, u2)、…、(tn, un) connected with smooth curve
Get up, obtains the corresponding spin echo string calibration curve of motion state 1.
Step 2, during NMR while drilling instrument logs well to actual formation, obtain with bore nuclear magnetic resonance
The spin echo string of logging instrument output and the motion state of NMR while drilling instrument.
In the present embodiment, when actually using NMR while drilling, NMR while drilling instrument can be measured
To the spin echo string of actual formation, meanwhile, NMR while drilling when NMR while drilling instrument can recorde well logging
The motion state of instrument thus obtains under the motion state and the motion state of NMR while drilling instrument practically
The spin echo string of layer.
Step 3, according to the motion state of NMR while drilling instrument and predetermined motion state with from cycle
The corresponding relationship of wave train calibration curve determines spin echo string calibration curve.
In the present embodiment, when due to practical logging, the motion state of NMR while drilling instrument is extremely complex, in order to make
Spin echo string after correction is more accurate, the motion state of NMR while drilling instrument can be divided into sequentially in time to
A few motion state.For example, in some embodiments, in practical logging, if well logging personnel operation is with brill nuclear magnetic resonance
Logging instrument is in the earth formation with fixed speed drilling well vertically downward, in this way, the motion state of NMR while drilling instrument is one kind
Motion state.If NMR while drilling instrument is in the earth formation simultaneously with fixed axial movement velocity and longitudinal movement when starting
Carry out drill-well operation.Since well logging needs, NMR while drilling instrument needs to change drilling direction, is axially moved speed with fixed
Degree and transverse movement horizontal drilling, NMR while drilling instrument change a motion state.In this way in a well logging
In, there are two types of motion states for NMR while drilling instrument.Then according to NMR while drilling instrument in each period
Motion state finds the spin echo string calibration curve under the motion state or close to the motion state.
Step 4, according to the spin echo string calibration curve, the spin echo string is corrected.
In the present embodiment, curve institute that spin echo string calibration curve changes over time for the correction coefficient of spin echo string
When the spin echo string for the actual formation that NMR while drilling instrument exports when correcting practical logging, for actual formation
Range value on spin echo string when moment t determines the correction coefficient at corresponding moment first from spin echo string calibration curve.
Wherein, since NMR while drilling instrument is when carrying out a practical logging, motion state be divided into sequentially in time to
A few motion state, so, any one motion state of NMR while drilling instrument when for practical logging, correction is appointed
When range value on the spin echo string anticipated under a motion state when time t, the spin echo of the corresponding motion state is found
String calibration curve, the correction coefficient when finding time t* corresponding with time t on spin echo string calibration curve, wherein when
Between t* be any one motion state under spin echo string on time t subtract the time that the motion state starts.For example, with
The corresponding motion state of spin echo string for boring the actual formation of NMR logging instrument output can be divided into sequentially in time:
In 0~t of period1Interior motion state is motion state 1, in time period t1~t2Interior motion state be motion state 2,
Time period t2~t3Interior motion state is motion state 3.Amplitude on spin echo string under correction of movement state 1 when time t
When value, correction coefficient when finding time t on spin echo string calibration curve corresponding with motion state 1, at this time from cycle
Time t on wave train calibration curve is corresponding with time t on spin echo string.When on the spin echo string under correction of movement state 2
Between t when range value when, and the corresponding spin echo string calibration curve of motion state 2 on find the time corresponding with time t
Correction coefficient when t*, the time t* on spin echo string calibration curve subtracts movement equal to time t on spin echo string at this time
The time t1 that state 2 starts.When range value on the spin echo string under correction of movement state 3 when time t, with motion state
Correction coefficient when time t* corresponding with time t is found on 3 corresponding spin echo string calibration curves, at this time spin echo string
Time t* on calibration curve is equal to the time t that time t on spin echo string subtracts the beginning of motion state 32。
Then, according to determining correction coefficient to the spin echo string width under moment t on the spin echo string of actual formation
Angle value is corrected processing, the range value of the spin echo string under moment t after the correction of actual formation is obtained, so as to each
When inscribe correction after spin echo string range value.
Finally, will be each when inscribe the smooth curve connection of range value of the spin echo string after correction, obtain reality
Spin echo string after the correction on stratum.
Spin echo string inverting after correction is obtained T by step 52Spectrum.
In the present embodiment, the prior art is referred to by the spin echo string inverting after correction and obtains T2Spectrum, herein no longer
It repeats.
Through this embodiment, when realizing using practical logging is simulated with the simulator for boring nuclear magnetic resonance vibration and rotation
Each motion state of NMR while drilling instrument in the earth formation, and by being in static with brill nuclear magnetic resonance modeling logging instrument
It is total with nuclear-magnetism is bored when spin echo string under the spin echo string and each motion state of state has been obtained for correcting practical logging
Shake logging instrument output spin echo string spin echo string calibration curve so that correction after spin echo string in, subtract
The influence for the spin echo string that the motion state of NMR while drilling instrument complexity measures it when weak practical logging.
It in some embodiments, include the direction of motion and movement speed with the motion state for boring nuclear magnetic resonance modeling logging instrument 1
Degree.The direction of motion is identical, but when movement velocity difference, is considered as different motion states.Likewise, movement velocity is identical, movement
When the difference of direction, also it is considered as different motion states.
In some embodiments, the direction of motion one shares N kind, and the corresponding movement velocity of each direction of motion is at least one
Kind, the N is the integer greater than 0.
In some embodiments, the direction of motion in motion state includes: the M kind direction of motion in the N kind direction of motion, institute
Stating M is the integer more than or equal to 1 and less than or equal to N.Such as: every time from a kind of direction of motion is only selected in N in the direction of motion, or
Person is in N any two kinds of direction of motion ... in the direction of motion simultaneously every time, alternatively, being the N in N in the direction of motion simultaneously every time
The kind direction of motion.
In some embodiments, N is equal to 3, and 3 kinds of directions of motion include transverse movement, axial movement, longitudinal movement.
When N is equal to 3, the spin echo string of simulated formation is obtained using simulator simulation NMR while drilling
When, three kinds of situations can be divided into the direction of motion for boring nuclear magnetic resonance modeling logging instrument 1:
The first situation is one-way movement, including transverse movement, axial movement, longitudinal movement；
Second situation is the combination of any two kinds of direction of motion, including does transverse movement simultaneously and be axially moved, simultaneously
It does transverse movement and longitudinal movement while axially moving and longitudinal movement；
The third situation is while doing transverse movement, axial movement and longitudinal movement.
Movement velocity in motion state includes: the corresponding any movement speed of every kind of direction of motion in the M kind direction of motion
Degree.Such as: if there was only a kind of direction of motion in motion state, different motion states corresponds to fortune different in the direction of motion
Dynamic speed；If in motion state simultaneously including two kinds and the two or more direction of motion, different motion states is corresponding any
Different movement velocity in one direction of motion.
When N is equal to 3, corresponding above-mentioned three kinds of situations with the direction of motion for boring nuclear magnetic resonance modeling logging instrument 1 move shape
Movement velocity in state can also be divided into three kinds of situation discussion:
When the direction of motion with brill nuclear magnetic resonance modeling logging instrument 1 is the first situation, in any one direction of motion
When movement, change the movement velocity in the direction of motion, in this way, different motion speed corresponds to a kind of movement shape in the direction of motion
State.Wherein, movement velocity remains unchanged in a motion process.For example, when doing lateral fortune with brill nuclear magnetic resonance modeling logging instrument 1
When dynamic, make with bore nuclear magnetic resonance modeling logging instrument 1 respectively with speed V1, V2 ..., Vk do transverse movement, can obtain and only do cross
To movement and the different k kind motion state of movement velocity.
When being second situation with the direction of motion for boring nuclear magnetic resonance modeling logging instrument 1, two are done simultaneously in this case
The movement of the direction of motion, be arranged in the direction of motion 1 respectively with movement velocity V1, V2 ..., Vp movement, then the total p kind of movement velocity；
To be arranged in the direction of motion 2 be respectively V1, V2 with movement velocity ..., Vq movement, then the total q kind of movement velocity.With brill nuclear magnetic resonance mould
When pseudolog instrument 1 moves in simulating wellbore, the movement velocity in the direction of motion 1 fixed first is V1, is changed in the direction of motion 2
Movement velocity, make the movement velocity in the direction of motion 2 be respectively V1, V2 ..., Vq.Then, then in the fixed direction of motion 1
Movement velocity is V2, change the direction of motion 2 on movement velocity, make the movement velocity in the direction of motion 2 be respectively V1, V2 ...,
Vq.Until the movement velocity in the fixed direction of motion 1 is Vp, changes the movement velocity in the direction of motion 2, make in the direction of motion 2
Movement velocity be respectively V1, V2 ..., Vq.That is, if the movement velocity in the direction of motion 1 has p kind, the movement in the direction of motion 2
Speed has q kind, then one shared (p*q) plants movement velocity, corresponding (p*q) plants motion state.
When being the third situation with the direction of motion for boring nuclear magnetic resonance modeling logging instrument 1, while fixed any two side
Upward movement velocity changes the movement velocity in the third direction of motion, in this way, obtaining corresponding to not in the third direction of motion
With the motion state of movement velocity, until obtaining the motion state of different motion speed in each corresponding direction of motion, that is, if
Movement velocity in the direction of motion 1 has p kind, and the movement velocity in the direction of motion 2 has q kind, and the movement velocity in the direction of motion 3 has
R kind, then one shared (p*q*r) plants movement velocity, corresponding (p*q*r) plants motion state.
It should be noted that transverse movement, axial movement, the movement velocity being arranged in longitudinal movement are in each direction
It is chosen between the minimum movement speed and maximum movement speed of upper permission.Wherein, the application does not limit the rule of selection, such as together
Difference in one direction of motion between two speed of arbitrary neighborhood is identical, changes the big of the difference between two speed of arbitrary neighborhood
The size of the small movement velocity that can change setting.
In some embodiments, telecontrol equipment 3 includes: transverse moving device 31, axial-movement devices 32, longitudinal movement dress
Set 33, connecting rod 34.
Wherein, connecting rod 34 for connect it is described with bore nuclear magnetic resonance modeling logging instrument 1 and the transverse moving device 31,
Axial-movement devices 32, longitudinal movement device 33.Specifically, one end of connecting rod 34 with bore nuclear magnetic resonance modeling logging instrument 1
Connection, connection type for example can be clip mode, welding manner, and the application is not intended to limit connecting rod 34 and with brill nuclear magnetic resonance
The connection type of modeling logging instrument 1.
Transverse moving device 31 executes lateral fortune with brill nuclear magnetic resonance modeling logging instrument 1 for driving by connecting rod 34
It is dynamic.Specifically, connecting rod 34 passes through the center of transverse moving device 31, and it is connect with transverse moving device 31, so that
When transverse moving device 31 does transverse movement, connecting rod 34 does transverse movement simultaneously, surveys to drive with brill nuclear magnetic resonance simulation
Well instrument 1 executes transverse movement.
Fig. 2 is the structural schematic diagram for the transverse moving device 31 that one embodiment of the invention provides.In some embodiments, such as
Shown in Fig. 2, transverse moving device 31 includes: horizontal bearing plate 311 and moving vehicle 312.
Wherein, it is provided with sliding rail on the horizontal bearing plate, the moving vehicle is connect with the connecting rod, in the fortune
When motor-car is slided along the sliding rail, drive described with brill nuclear magnetic resonance modeling logging instrument execution transverse movement.
Specifically, horizontal bearing plate 311 is located at the top of stratum simulator 2, and cunning is provided on horizontal bearing plate 311
Rail 313.Wherein, horizontal bearing plate 311 and sliding rail 313 are made using non-magnetic material.Horizontal bearing plate 311 is by two pieces of plates
It is composed, and there are gaps between two pieces of plates, for connecting rod 34 as moving vehicle 312 does cross between two pieces of plates
To movement.Meanwhile connecting rod 34 passes through the center of horizontal bearing plate 311.
Moving vehicle 312 moves on horizontal bearing plate 311 along sliding rail 313, with brill nuclear-magnetism when for simulating practical logging
The transverse movement state of resonance logging instrument.Specifically, connecting rod 34 passes through trolley 312 and connect with trolley 312,
In, connecting rod 34 is fixed with 312 contact site of moving vehicle using bearing, to guarantee 312 transverse movement of moving vehicle
When, the axial movement of connecting rod 34 is unaffected.When speed transverse movement of the trolley 312 according to setting, can pass through
Connecting rod 34 drives with the speed execution transverse movement for boring nuclear magnetic resonance modeling logging instrument 1 according to setting.Wherein, moving vehicle
312 wheel portion has locking device, can lock and come to a complete stop after so that moving vehicle 312 is moved to designated position.Also, it moves
Vehicle 312 is also made using non-magnetic material.
Axial-movement devices 32 execute axial fortune with brill nuclear magnetic resonance modeling logging instrument 1 for driving by connecting rod 34
It is dynamic.Specifically, axial-movement devices 32 and the connection type of connecting rod 34 can be, referring to Fig.1, axial-movement devices 32 are fixed
It is mounted in connecting rod 34.In this way, connecting rod 34 axially moves simultaneously when axial-movement devices 32 axially move, thus
It drives and executes axial movement in simulation wellbore with brill nuclear magnetic resonance modeling logging instrument 1.
Fig. 3 is the structural schematic diagram for the axial-movement devices 32 that one embodiment of the invention provides.In some embodiments, such as
Shown in Fig. 3, axial-movement devices 32 include: electronic device 321.
Specifically, electronic device 321 is fixed in connecting rod 34, when electronic device 321 is done according to the revolving speed of setting
When axial movement, by the connection function of connecting rod 34, drive with bore nuclear magnetic resonance modeling logging instrument 1 in simulation wellbore with
The identical revolving speed of electronic device 321 executes axial movement.Wherein, the revolving speed of electronic device 321 is adjustable, passes through adjusting
The revolving speed of electronic device 321 can control the speed being axially moved with nuclear magnetic resonance modeling logging instrument 1 is bored.
Longitudinal movement device 33 executes longitudinal fortune with brill nuclear magnetic resonance modeling logging instrument 1 for driving by connecting rod 34
It is dynamic.Specifically, connecting rod 34 is connect with longitudinal movement device 33, connecting rod 34 is controlled by longitudinal movement device 33 and is driven with brill
Nuclear magnetic resonance modeling logging instrument 1 executes longitudinal movement.
Fig. 4 is the structural schematic diagram for the longitudinal movement device 33 that one embodiment of the invention provides.In some embodiments, such as
Shown in Fig. 4, longitudinal movement device 33 includes: first pulley 331, second pulley 332 and connecting rope 333.Connecting rope 333 with connect
Bar 34 connects, and is also connected with first pulley 31 and second pulley 332.
Specifically, the first end of connecting rope 333 is vertically connect with connecting rod 34, then, connecting rope 333 bypasses first pulley
331, it is connected to the second end of connecting rope 333 in second pulley 332.Referring to Fig. 4, when 333 stress of connecting rope makes second pulley
332 when rotating clockwise, and the first end of connecting rope 333 pulls 34 upward vertical movement of connecting rod, to drive total with nuclear-magnetism is bored
Vibration modeling logging instrument 1 executes upward longitudinal movement: when 333 stress of connecting rope rotates counterclockwise second pulley 332, connection
The first end of rope 333 pulls 34 vertical downward movement of connecting rod, executes downwards to drive with brill nuclear magnetic resonance modeling logging instrument 1
Longitudinal movement.By controlling the speed of stretching or the release of the second end of connecting rope 333, control is simulated with nuclear magnetic resonance is bored
The longitudinal velocity of logging instrument 1.
By above-mentioned simulator, telecontrol equipment 3 can drive to simulate with brill nuclear magnetic resonance modeling logging instrument 1 on stratum and fill
The motion state for setting the various complexity of NMR while drilling instrument when simulating practical logging in 2 simulation wellbore, acquires with brill
Nuclear magnetic resonance modeling logging instrument is in the spin echo string under different motion state and under stationary state.Pass through different motion state
Spin echo string under lower and stationary state can obtain the spin echo string calibration curve under different motion state, spin echo
String calibration curve is for correcting the spin echo string obtained in practical logging.The T that spin echo string inverting after correction obtains2Spectrum
It is able to reflect more true formation characteristics, to provide more accurate down-hole information for well logging personnel.
Using above-mentioned simulator, the present invention provides a kind of method that simulation is vibrated and rotated with nuclear magnetic resonance is bored.Fig. 5 is
Simulation provided by the invention is vibrated with brill nuclear magnetic resonance and the method flow diagram of the embodiment one of the method for rotation.As shown in figure 5,
Method includes the following steps:
S501, it is described with bore nuclear magnetic resonance modeling logging instrument under static state, to the mould in the stratum simulator
Quasi- stratum carries out logging operation, exports the spin echo string obtained under stationary state.
S502, the telecontrol equipment move described in driving with brill nuclear magnetic resonance modeling logging instrument, so as to described with brill nuclear-magnetism
Resonance modeling logging instrument is respectively at least one motion state.
S503, it is described with bore nuclear magnetic resonance modeling logging instrument log well to the simulated formation in the stratum simulator
Operation, and when being in different motion state, export the spin echo string obtained under corresponding motion state.
In the present embodiment, provide not only with brill nuclear magnetic resonance modeling logging instrument simulation NMR while drilling instrument in reality
Border log well when motion state, it is available with bore nuclear magnetic resonance modeling logging instrument remain static under each motion state
Spin echo string, thus by remaining static and the spin echo under each motion state with brill nuclear magnetic resonance modeling logging instrument
It goes here and there, the spin echo string calibration curve under available each motion state, using the calibration curve, when can correct practical logging
The spin echo string of the actual formation measured.
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
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of with the simulator for boring nuclear magnetic resonance vibration and rotation characterized by comprising surveyed with nuclear magnetic resonance simulation is bored
Well instrument, stratum simulator, telecontrol equipment；
Simulated formation is provided in the stratum simulator；
It is described with bore nuclear magnetic resonance modeling logging instrument, to export spin echo string；
The telecontrol equipment is connect with described with brill nuclear magnetic resonance modeling logging instrument, described with brill nuclear magnetic resonance simulation for driving
Logging instrument executes movement, is respectively at least one motion state with brill nuclear magnetic resonance modeling logging so as to described；
It is described to be placed in the stratum simulator with nuclear magnetic resonance modeling logging instrument is bored, it is filled for being simulated to the stratum
Simulated formation in setting carries out logging operation, and when described static with brill nuclear magnetic resonance modeling logging instrument, output is in quiet state
The spin echo string of lower acquisition, it is described with boring nuclear magnetic resonance modeling logging instrument and be in different motion state when, export to meeting the tendency of
The spin echo string obtained under dynamic state；
Wherein, the spin of the spin echo string obtained respectively under at least one motion state and the lower acquisition that remains static
Echo, for obtaining the spin echo string calibration curve under at least one motion state；Under at least one motion state
Spin echo string calibration curve for correct obtained during NMR while drilling instrument logs well to actual formation
The spin echo string obtained.
2. simulator according to claim 1, which is characterized in that the motion state includes: the direction of motion and movement
Speed.
3. simulator according to claim 2, which is characterized in that the direction of motion is N kind, each direction of motion pair
The movement velocity answered is at least one, and the N is the integer greater than 0；
The direction of motion in the motion state includes: the M kind direction of motion in the N kind direction of motion, and the M is more than or equal to 1
And it is less than or equal to the integer of N；
Movement velocity in the motion state includes: the corresponding any movement speed of every kind of direction of motion in the M kind direction of motion
Degree.
4. simulator according to claim 3, which is characterized in that N is equal to 3, and 3 kinds of directions of motion include laterally transporting
Dynamic, axial movement, longitudinal movement.
5. simulator according to claim 4, which is characterized in that the telecontrol equipment includes: transverse moving device, axis
To telecontrol equipment, longitudinal movement device, connecting rod；
The connecting rod is used to connect described with brill nuclear magnetic resonance modeling logging instrument and the transverse moving device, axial movement dress
It sets, longitudinal movement device；
The transverse moving device, for executing transverse direction with brill nuclear magnetic resonance modeling logging instrument by the way that connecting rod drive is described
Movement；
The axial-movement devices, for executing axial direction with brill nuclear magnetic resonance modeling logging instrument by the way that connecting rod drive is described
Movement；
The longitudinal movement device, for executing longitudinal direction with brill nuclear magnetic resonance modeling logging instrument by the way that connecting rod drive is described
Movement.
6. simulator according to claim 5, which is characterized in that the transverse moving device includes: horizontal bearing plate
And moving vehicle；
Sliding rail is provided on the horizontal bearing plate, the moving vehicle is connect with the connecting rod, on the moving vehicle edge
When the sliding rail slides, drive described with brill nuclear magnetic resonance modeling logging instrument execution transverse movement.
7. simulator according to claim 5, which is characterized in that the axial-movement devices include: electronic device；
The electronic device is connect with the connecting rod, in electronic device rotation, is driven described total with nuclear-magnetism is bored
Vibration modeling logging instrument executes axial movement.
8. simulator according to claim 5, which is characterized in that the longitudinal movement device include: two pulleys and
Connecting rope, the connecting rope are connect with connecting rod, and are also connected with described two pulleys；
In the connecting rope stress, drive described with brill nuclear magnetic resonance modeling logging instrument execution longitudinal movement.
9. simulator according to claim 1, which is characterized in that the simulated formation has the respective layer of down-hole formation
The physical properties of rock of rock.
10. a kind of using such as the described in any item moulds with the simulator for boring nuclear magnetic resonance vibration and rotation of claim 1-9
The quasi- method vibrated and rotated with nuclear magnetic resonance is bored characterized by comprising
It is described with bore nuclear magnetic resonance modeling logging instrument under static state, in the stratum simulator simulated formation carry out
Logging operation exports the spin echo string obtained under stationary state；
The telecontrol equipment moves described in driving with brill nuclear magnetic resonance modeling logging instrument, so as to described with brill nuclear magnetic resonance simulation survey
Well instrument is respectively at least one motion state；
It is described with bore nuclear magnetic resonance modeling logging instrument in the stratum simulator simulated formation carry out logging operation, and
When in different motion state, the spin echo string obtained under corresponding motion state is exported.
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| CN111411944A (en) * | 2020-04-27 | 2020-07-14 | 无锡量子感知研究所 | Nuclear magnetic resonance logging while drilling instrument and working mode control method and system thereof |
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| CN102565865A (en) * | 2011-12-07 | 2012-07-11 | 中国石油大学(北京) | Method and device for obtaining noise-reducing NMR (Nuclear Magnetic Resonance) logging echo signal |
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| CN102565865A (en) * | 2011-12-07 | 2012-07-11 | 中国石油大学(北京) | Method and device for obtaining noise-reducing NMR (Nuclear Magnetic Resonance) logging echo signal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411944A (en) * | 2020-04-27 | 2020-07-14 | 无锡量子感知研究所 | Nuclear magnetic resonance logging while drilling instrument and working mode control method and system thereof |
| CN111411944B (en) * | 2020-04-27 | 2024-04-09 | 国仪石油技术(无锡)有限公司 | Nuclear magnetic resonance logging while drilling instrument and working mode control method and system thereof |
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