CN112379444A - Transverse wave collision clock knocking micro-logging surface layer analysis device, system and method - Google Patents
Transverse wave collision clock knocking micro-logging surface layer analysis device, system and method Download PDFInfo
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Abstract
The invention provides a transverse wave clock-striking micro-logging surface layer analysis device, a system and a method, wherein the device comprises a clock-striking device, a striking excitation device and a supporting device; the support device is used for suspending the clock striking device and fixing the impact excitation device, the clock striking device impacts the impact excitation device from the inclined direction under the action of external force to generate a longitudinal wave source and a transverse wave source, and the invention can improve the excitation energy of the transverse wave to improve the investigation depth of the surface layer of the transverse wave.
Description
Technical Field
The invention relates to the technical field of geophysical exploration, in particular to a transverse wave clock knocking micro-logging surface layer analysis device, system and method.
Background
In the field of geophysical exploration, as oil and gas exploration is deep, single longitudinal wave exploration is difficult to solve the problems of complex structures and thin reservoir resolution, and longitudinal and transverse wave combined exploration needs to be developed. The shear wave surface survey is an important work of a shear wave seismic acquisition project and is a premise and a basis for solving near-surface modeling and static correction calculation. Converted wave two-dimensional, converted wave three-dimensional, pure transverse wave two-dimensional, longitudinal and transverse wave two-dimensional and longitudinal and transverse wave three-dimensional seismic exploration is successively developed in the three-lake area of the Chadada basin from 2001, wherein micro-logging is an effective method for improving the precision of transverse wave surface layer investigation, and transverse wave surface layer investigation is carried out by various transverse wave micro-logging construction modes such as left-right knocking of sleepers, electric spark excitation micro-logging, small refraction due to knocking of lateral steel plates and the like. However, the conventional shear wave surface layer survey method has a problem of weak excitation energy, and limits the depth of shear wave survey.
Disclosure of Invention
One object of the present invention is to provide a shear-wave-bell-knocking micro-logging surface layer analysis device, which can increase the shear-wave excitation energy to increase the depth of shear-wave surface layer investigation. It is another object of the present invention to provide a shear-wave bell-strike micro-logging surface survey system. It is yet another object of the present invention to provide a method for transverse-wave-bell-strike micro-logging surface investigation. It is a further object of the present invention to provide a computer apparatus. It is a further object of this invention to provide such a readable medium.
In order to achieve the above purposes, the invention discloses a transverse wave clock-striking micro-logging surface layer analysis device on one hand, which comprises a clock-striking device, a striking excitation device and a supporting device;
the support device is used for suspending the clock striking device and fixing the impact excitation device, and the clock striking device impacts the impact excitation device from the inclined direction under the action of external force to generate a longitudinal wave source and a transverse wave source.
Preferably, the bell jar knocker includes an oxygen tank filled with fine sand.
Preferably, the knocking device further comprises ear buckles arranged at two ends of the oxygen tank and used for hanging the oxygen tank and T-shaped handles used for applying force to the oxygen tank.
Preferably, the impact excitation device comprises a sleeper and a sawtooth nail fixed on the ground;
the steel plate is welded on the surface of the sleeper, which is impacted by the striking clock knocking device, the sawtooth nails are embedded into the sleeper, and the supporting device is arranged above the sleeper so as to fix the sleeper on the ground.
The invention also discloses a transverse wave clock knocking micro-logging surface layer analysis system, which comprises the transverse wave clock knocking micro-logging surface layer analysis device, an underground three-component detector and a seismic recording instrument;
the seismic recording instrument is used for controlling the underground three-component detector to collect the collected signals formed by the longitudinal wave source and the transverse wave source after the signals sent by the longitudinal wave source and the transverse wave source pass through the stratum while the transverse wave clock strikes the micro-logging surface layer analysis device to form the longitudinal wave source and the transverse wave source, time shift correction is carried out on the collected signals, and the corrected collected signals are subjected to rotation calculation to obtain R and T components.
Preferably, the seismic recording instrument is used for receiving a short-circuit signal generated when a transverse wave collision clock strikes the micro-logging surface layer analysis device to impact the longitudinal wave source and the transverse wave source, and controlling the three-component detector to collect the collected signal.
Preferably, the seismic recording instrument comprises a seismic recording instrument, a first shear wave trigger line and a second shear wave trigger line;
the first ends of the first transverse wave trigger line and the second transverse wave trigger line are electrically connected with the seismograph, and the second ends of the first transverse wave trigger line and the second transverse wave trigger line are respectively connected with the clock striking device and the impact excitation device;
the first transverse wave trigger line and the position where the clock striking device is connected and the second transverse wave trigger line and the position where the impact excitation device is connected are the positions where the clock striking device and the impact excitation device impact.
Preferably, the device further comprises a detector arranged at the micro-logging wellhead;
the geophone is used for picking up first arrival signals formed by signals emitted by the longitudinal wave source and the transverse wave source passing through the stratum, and the seismic recording instrument is used for carrying out time shift correction on the acquired signals according to the first arrival signals.
Preferably, the seismic recording instrument is used for performing RT rotation on X and Y components of transverse wave signals of the collected signals to obtain a maximum corresponding angle of root-mean-square amplitude, and performing rotation calculation on the X and Y components according to the angle to obtain R and T components.
The invention also discloses a transverse wave collision bell knocking micro-logging surface layer analysis method, which comprises the following steps:
when a transverse wave collision clock strikes a micro-logging surface layer analysis device to form a longitudinal wave source and a transverse wave source, controlling the underground three-component detector to collect a collected signal formed by signals sent by the longitudinal wave source and the transverse wave source after passing through a stratum;
time shift correction is carried out on the collected signals;
and performing rotation calculation on the corrected acquisition signal to obtain R and T components.
Preferably, the rotating the corrected acquired signal to obtain the R and T components specifically includes:
carrying out RT rotation on X and Y components of transverse wave signals of the collected signals to obtain a maximum corresponding angle of root-mean-square amplitude;
and carrying out rotation calculation on the X and Y components according to the angle to obtain R and T components.
The invention also discloses a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor,
the processor, when executing the program, implements the method as described above.
The invention also discloses a computer-readable medium, having stored thereon a computer program,
which when executed by a processor implements the method as described above.
The invention provides a transverse wave clock knocking micro-logging surface layer analysis device which can improve transverse wave excitation energy, reduce transverse wave first arrival recording noise and improve transverse wave micro-logging investigation depth, and provides reliable basic data for transverse wave surface layer modeling and static correction calculation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of one embodiment of a transverse-wave-bell-strike micro-logging surface analysis apparatus and system of the present invention;
FIG. 2 is a diagram illustrating a prior art acquisition of the Z component of a signal;
FIG. 3 is a schematic diagram showing the X component of one embodiment of a transverse-wave-bell-strike micro-logging surface analysis system of the present invention;
FIG. 4 is a flow chart illustrating one embodiment of a shear-bell strike micro-log surface analysis method of the present invention;
FIG. 5 is a flow chart of a method S300 for shear-bell-strike micro-logging surface analysis in accordance with an embodiment of the present invention;
FIG. 6 illustrates a schematic block diagram of a computer device suitable for use in implementing embodiments of the present invention.
Reference numerals:
1 downhole three-component detector, 2 downhole three-component detector cable, 3 well wall, 4 well head distance, 5 ground, 6 well head detector, 7 shallow layer seismic recording instrument, 8 cable joint, 9 trigger joint, 10 steel wire rope, 111 first transverse wave trigger line, 112 second transverse wave trigger line, 12 handles, 13 oxygen tank, 14 hoisting belt, 15 crane, 16 truck, 17 sleeper, 18 sawtooth nail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In accordance with one aspect of the present invention, a shear-bell strike micro-log surface analysis device is disclosed. As shown in fig. 1, the device includes a bell striking device, a strike activation device, and a support device.
The support device is used for suspending the clock striking device and fixing the impact excitation device, and the clock striking device impacts the impact excitation device from the inclined direction under the action of external force to generate a longitudinal wave source and a transverse wave source. It should be understood that the oblique direction is all directions excluding vertical and parallel directions, and the position of the impact can be flexibly set according to actual requirements, which is not limited by the present invention.
The invention provides a transverse wave clock knocking micro-logging surface layer analysis device which can improve transverse wave excitation energy, reduce transverse wave first arrival recording noise and improve transverse wave micro-logging investigation depth, and provides reliable basic data for transverse wave surface layer modeling and static correction calculation.
In a preferred embodiment, the knock mechanism includes an oxygen tank 13 filled with fine sand. Specifically, in the preferred embodiment, the knock-on device is made by filling the oxygen tank 13 with fine sand, which can increase the knock output and excitation energy by nearly 10 times.
In one embodiment, a waste oxygen tank 13 (40L cylinder size: 1400mm (height) × 219mm (diameter) and 50kg in weight) is opened, filled with fine sand, and then re-sealed. After the oxygen tank 13 is filled with the fine sand, the oxygen tank has two advantages: adding 13 weight of oxygen tankThe amount of the sand is 1400-1700 kg/m according to the density of the sand3Actually calculating the density of the compacted sand to be 1600kg/m 31 liter ═ 0.001m3 Oxygen tank 13 filled with sand, weight: specification of 40L gas cylinder: 40 liters × 0.001m3 × 1600kg/m3+50kg as 114 kg; and noise generated by the collision of the air oxygen tank 13 is reduced.
In a preferred embodiment, the striking device further comprises ears provided at both ends of the oxygen tank 13 for hanging the oxygen tank 13 and T-shaped handles 12 for applying force to the oxygen tank 13.
In one embodiment, 10cm ear buttons (1 m apart) are welded to the two ends of the oxygen tank 13, and the sling 14 is fixed to the ear buttons by fasteners (the strength: flat sling 141T-30T, width: 25mm-150mm, length: 5-6 m). And then, after the hoisting belt 14 is hooked by a small 3.5-ton crane 15, the height of the crane 15 and the proper position of the hoisting belt 14 are adjusted to ensure that the sealing end of the oxygen tank 13 is 50cm away from the ground, the bottom end of the oxygen tank 13 is 10cm away from the ground, and the oxygen tank 13 is in a suspended state. A T-shaped handle 12(20-40cm) is welded at the sealing end of the oxygen tank 13 and can be pushed and pulled by an operator, the operator can push the oxygen tank 13 to impact a sleeper 17 or pull the oxygen tank 13 (the pull distance is about 1m) by gripping the handle 12.
It will be appreciated that the force of the oxygen tank 13 striking the sleeper 17 can be estimated and registered against a conventional weight striking sleeper 17 as follows:
according to the law of momentum (I ═ Ft and P ═ mv), the increment of the momentum of the object is equal to the impulse of the resultant external force to which it is subjected, as follows:
I＝F×Δt (1)
P＝m×v (2)
wherein F is the knocking acting force, I represents the impulse made by the force F, P is the momentum of the object, m is the quality of the knocking weight, g is the gravity of the object 9.8N/kg, delta t is the time variation, and v is the speed of the object.
Using a conventional hammer (8 pound to 3.63kg, 12 pound to 5.44kg, 16 pound to 7.25 kg), a normal hammer strike speed v to 4m/s, a strike (strike) time of 0.01s, according to (3), 8 pound hammer F to 7.25kg × 4m/s/0.01s +7.25kg × 9.8N/kg to 1487N, 12 pound hammer F to 7.25kg × 4m/s/0.01s +7.25kg × 9.8N/kg to 2229N, 16 pound hammer F to 7.25kg × 4m/s +7.25kg × 9.8N/kg to 2971N can be calculated.
Knocking by using the sand-containing oxygen tank 13(114kg), wherein the pushing force F0 of an operator for the oxygen tank 13 is 300N (introduced from 5 th edition chemical publishing agency of mechanical design handbook), the stroke distance S of the oxygen tank 13 from rest to impact on the sleeper 17 is 1m, only horizontal free motion is considered without considering the swinging centripetal force of the oxygen tank 13, and the speed v when the oxygen tank 13 impacts on the sleeper 17 can be calculated according to the Newton' S second law principle as follows:
F0＝m×a (4)
v＝a×t (5)
where t is time and a is the acceleration of the object. V can be calculated to be 2.3m/s according to the equations (4) to (6), the knocking (striking) time is 0.01s, F can be calculated to be 114kg × 2.3m/s/0.01s +114kg × 9.8N/kg ≈ 27337N according to (3), the operator then pushes the oxygen tank 13 with F0N with 300N, the total of the oxygen tank 13 impact force F is 27337N +300N is 27637N, and the oxygen tank 13 impact force is 9.3 to 18.5 times of the conventional hammer (8 lbs, 12 lbs and 16 lbs) impact force.
In a preferred embodiment, the impact activation means comprises a sleeper 17 and a serrated nail 18 fixed to the ground 5. The surface of the sleeper 17 which is collided with the striking clock knocking device is welded with a steel plate, the sawtooth nails 18 are embedded into the sleeper 17 and the supporting device is placed above the sleeper 17 to fix the sleeper 17 on the ground 5.
In one embodiment, a sleeper 17 (300 cm long by 30cm wide by 30cm high by 30cm) may be made and its ends and edges are wrapped and welded with steel plates, while saw nails 18 (serrated surfaces) are embedded in the contact surface of the sleeper 17 with the floor 5 and the sleeper 17 is pressed by a truck 16 to ensure that the sleeper 17 is coupled with the floor 5, as shown in fig. 1. The shallow seismic recording instrument 7 is electrically connected with the underground three-component detector 1 through the underground three-component detector cable 2. One end of the wellhead geophone 6 is connected with a cable joint 8 of the seismic recording instrument 7, and the other end is connected with the underground three-component geophone 1. The micro logging comprises a well bottom and a well wall 3, the three-component detector 1 is connected with a steel wire rope 10, and the three-component detector 1 can be lowered or lifted up through the steel wire rope 10. The wellhead detector 6 is arranged at the wellhead position where the well wall 3 and the ground 5 are connected, and the wellhead detector 6 is connected with a cable joint 8 of the seismic recording instrument 7 through a cable. In addition, the distance 4 between the wellhead and the impact position needs to be measured in advance for analyzing the acquired signals at a later stage.
The cross section of the sleeper 17 is designed to ensure that the shearing force is uniformly stressed and the shearing force is maximally output (the shearing strength is maximal). Assuming that the shear stress is uniformly distributed on the shear surface, the shear stress calculation formula is as follows:
wherein tau is shear stress (unit MPa), FQIn order to receive the impact force (in Newton N) to the crosstie 17, A is the cross-sectional area (in square meter) of the crosstie 17, d and h are the width and height (in meter) of the cross-section of the crosstie 17, R is the diameter (in meter) of the oxygen tank 13, it can be seen from the formula (7) that the shear stress is inversely proportional to the cross-sectional area of the crosstie 17, the smaller the cross-sectional area of the crosstie 17 is, the larger the shear stress is generated by the impact on the crosstie 17, and the cross-sectional area of the crosstie 17 is larger than the area of the bottom surface of the oxygen tank 13, therefore, the cross-sectional width and height of the crosstie 17 are equal and larger than the diameter of the bottom surface of the oxygen tank 13 by 0.219m, and the cross-
The elastic deformation of the crosstie 17 is improved by packing the crosstie 17 with a steel plate for the primary purpose, wherein the main wood elastic constant is 6000-17000MPa, the pine elastic constant is 16272MPa, and the shear stress generated when the oxygen tank 13 hits the crosstie 17 is much greater than the elastic constant of the crosstie 17, thereby enhancing the elastic constant of the crosstie 17 by packing the crosstie 17 with the steel plate.
The contact surface of the sleepers 17 and the ground 5 is embedded with the sawtooth nails 18 to form a sawtooth surface, so that the sleepers 17 are ensured to grab the ground 5, and the sleepers 17 are prevented from sliding and decoupling after being impacted.
Furthermore, the front wheel of a truck 16 (model: Dongfeng four-wheel drive tine off-road truck 16EQ1093, the whole vehicle weight: 4990kg, the external dimension (mm): 6910X 2470X 2475, as a supporting device) can be used for pressing the sleeper 17, so that the sleeper 17 is prevented from sideslip and decoupling after being impacted, and meanwhile, the crane 15 is fixed on the truck 16, so that the integration of the device is realized.
When the cross-wave clock is used for knocking the surface layer of the micro logging well, the knocking clock is used for knocking the excitation force source of the sleeper 17 to generate a strong-energy cross-wave source, and the strong-energy cross-wave source is radiated by the force source to generate a longitudinal-wave source, and meanwhile, when the oxygen tank 13 is hoisted, the oxygen tank 13 is inclined (the sealing end of the oxygen tank 13 is 50cm away from the ground, the bottom end of the oxygen tank 13 is 10cm away from the ground, and the oxygen tank 13 is in a suspended state) to collide the sleeper 17, so that not only horizontal-direction shearing force is generated, but also downward pressing stress is generated, and therefore, the longitudinal-wave excitation energy is enhanced.
Based on the same principle, the embodiment also discloses a transverse wave collision clock knocking micro-logging surface layer analysis system. Referring again to fig. 1, the system includes a transverse-wave-bell-strike micro-logging surface analysis device, a downhole three-component geophone 1, and a seismic recording instrument 7 as described in this embodiment.
The seismic recording instrument 7 is used for controlling the underground three-component detector to collect the collected signals formed by the longitudinal wave source and the transverse wave source after the signals sent by the longitudinal wave source and the transverse wave source pass through the stratum while the transverse wave clock strikes the micro-logging surface layer analysis device to form the longitudinal wave source and the transverse wave source, time shifting correction is carried out on the collected signals, and the corrected collected signals are subjected to rotation calculation to obtain R and T components.
The invention provides a transverse wave clock knocking micro-logging surface layer analysis system which can improve transverse wave excitation energy, reduce transverse wave first arrival recording noise and improve transverse wave micro-logging investigation depth and provide reliable basic data for transverse wave surface layer modeling and static correction calculation.
In a preferred embodiment, the seismic recording instrument 7 is configured to receive a short-circuit signal generated when a transverse-wave-collision-bell strikes a micro-logging surface analyzer to form the longitudinal wave source and the transverse wave source, and control the three-component geophone 1 to acquire the acquisition signal.
In a preferred embodiment, the system further comprises a first shear wave trigger line 111 and a second shear wave trigger line 112.
First ends of the first transverse wave trigger line 111 and the second transverse wave trigger line 112 are electrically connected to the seismic recording instrument 7, specifically, can be connected to the triggering connector 9 of the seismic recording instrument 7, and second ends of the first transverse wave trigger line 111 and the second transverse wave trigger line 112 are respectively connected to the clock striking device and the impact excitation device.
The position where the first shear wave trigger line 111 is connected with the striking device and the position where the second shear wave trigger line 112 is connected with the striking excitation device are the positions where the striking device strikes the striking device.
It will be appreciated that in the preferred embodiment, the short circuit triggering principle is used to achieve simultaneous acquisition of the striker strike and shallow seismic recording instruments 7. In one specific example, 2 transverse wave trigger lines 11 of 5M are cut, one end of each transverse wave trigger line 11 is connected with a trigger joint 9 of a shallow earthquake recording instrument 7, the joints are wrapped by 3M electricity-proof wide adhesive tapes, 10mm ear buckles are welded on the bottom end edge of an oxygen tank 13 and connected with the other end of one transverse wave trigger line 11, and 10mm ear buckles are welded on the wrapping end edge of a sleeper 17 steel plate and connected with the other end of one transverse wave trigger line 11. When the oxygen tank 13 impacts the sleeper 17, two transverse wave trigger lines 11 form a current loop, so that the shallow earthquake recording instrument 7 is triggered to collect, and synchronous collection of the knocking clock and the shallow earthquake recording instrument 7 is realized. Namely, when the seismic recording instrument 7 receives a short-circuit signal generated when an acquisition transverse wave collision clock strikes a micro-logging surface layer analysis device to impact and form the longitudinal wave source and the transverse wave source, the three-component wave detector 1 is controlled to acquire the acquisition signal.
Specifically, when transverse wave micro-logging data acquisition is carried out on a production well, signal acquisition is carried out according to the depth interval of less than 20 meters in depth, the depth interval of 10-20 meters is 2 meters, the depth interval of 5-10 meters is 1 meter, the depth interval of less than 0-5 meters is 0.5 meter, a three-component detector 1 is arranged at the bottom of the well, acquisition signals are acquired from the bottom of the well to the top of the well one by one, each depth transverse wave is acquired for 2 times, and file numbers are recorded according to the sequence of 1.SG2, 2.SG2 and 3.SG2.
The acquisition signals acquired by the pulses generated by each excitation are monitored in real time, the waveform appearance, frequency, energy, noise and first arrival position of the acquisition signals are monitored in a key mode, abnormal acquisition signal records are found in time and are acquired again, and the accuracy of the acquisition signal records of each excitation is guaranteed. And (4) according to a pulse wave source generated by knocking, picking up a first arrival wave trip point as a micro logging record first arrival.
In a preferred embodiment, the system further comprises a geophone positioned at the wellhead of the microlog. The geophone is used for picking up first arrival signals formed by signals emitted by the longitudinal wave source and the transverse wave source passing through the stratum, and the seismic recording instrument 7 is used for carrying out time shift correction on the acquired signals according to the first arrival signals. It will be appreciated that time-shift correction of the acquired signals may be achieved by techniques commonly used in the art. The first arrival time shift of the collected signals generated by knocking the collision clock is corrected by recording the first arrival signals through the wellhead geophone 6, so that the consistency of micro-logging recording waves can be improved.
It can be understood that the collision bell strikes the sleeper 17 to form a transverse wave source and a longitudinal wave source so as to excite pulse waves, the impact force, the impact position, the ground coupling and the line contact all affect the pulse wave generation and the synchronization of the pulse signal acquisition time of the instrument, special equipment is needed in the prior art to check the consistency of excitation signals and acquired signals of the device, and the wellhead detector 6 is used for recording first arrival signals to record micro-logging acquired signals so as to correct time difference.
Specifically, the first arrival signals of the wellhead geophones 6 with clear first arrivals of any component are selected and displayed according to waveforms, the first arrival positions are picked up, the time shift channels of the first arrival positions are eliminated, the average first arrival time is calculated, the average first arrival time is subtracted from each first arrival channel to obtain a relatively accurate time shift amount generated by knocking the sleeper 17 acquisition system, and all the acquired signals are uniformly corrected by using the time shift amount, wherein the formula is as follows:
wherein the content of the first and second substances,
in order to eliminate the average first arrival time of the wellhead geophones 6 after the first arrival moves to the track, N is the number of the tracks, tiIn order to eliminate the first arrival time delta t of the wellhead geophone 6 after the first arrival moves to the trackiThe time shift amount X generated by knocking the sleeper 17 by a clocki(t) is the minute well logging record of knocking the clock,
and (4) recording the micro-logging after correcting the knocking time difference of the clock, wherein t is time.
In a preferred embodiment, the seismic recording instrument 7 is configured to perform RT rotation on X and Y components of a shear wave signal of the acquired signal to obtain an angle corresponding to the maximum root-mean-square amplitude, and perform rotation calculation on the X and Y components according to the angle to obtain R and T components. Wherein, X and Y directions are two directions which are mutually vertical to the horizontal direction of the rectangular coordinate.
It will be appreciated that in the preferred embodiment, RT rotation of the tap shear wave recording X and Y components directly corrects the rotation of both shear wave components to fast and slow components.
The underground three-component detector freely rotates in the lifting process and cannot fix the direction of the detector, so that the consistency ratio of the recorded wave is poor, the RT rotation needs to be carried out on the underground three-component detector 1, and the RT rotation technology comprises the following implementation steps:
and extracting and recording an X component and a Y component, preliminarily picking up the X component and the Y component in first arrival, and selecting the X component and the Y component of a 50ms time window of the first arrival position.
And (3) performing rotation angle scanning according to RT rotation formulas (12) and (13), calculating root mean square amplitudes ER and ET of the X component and the Y component after rotation one by one from a range of 0-180 degrees and an angle increment of 1 degree, and outputting an angle Ang corresponding to the maximum root mean square amplitude.
Rk(ti)＝X(ti)×cos(Angk)+Y(ti)×sin(Angk) (12)
Tk(ti)＝X(ti)×sin(Angk)+Y(ti)×cos(Angk) (13)
Wherein, X (t)i) And Y (t)i) The distribution representing the X and Y components, tiRepresenting the corresponding time of the selected time window sample points, M representing the number of the time window sample points, AngkRepresenting a rotation angle, wherein the range is 0-180 degrees, and k represents an angle increment serial number; ERkRepresenting the mean azimuthal root amplitude, ET, of the R component after rotationkRepresenting the mean azimuth root of the T component after rotationAmplitude of vibration.
And performing rotation calculation on the recorded X component and Y component according to the calculation angle to obtain R and T components, thereby obtaining a slow wave record with relatively high first arrival consistency and providing high-quality seismic records for subsequent transverse wave micro-logging record interpretation. Fig. 2 shows a schematic diagram of the Z-component of the acquired signal in the prior art. FIG. 3 is a schematic diagram illustrating the X component of an embodiment of a shear-bell strike micro-log surface analysis system in one embodiment.
The invention relates to a longitudinal and transverse wave surface layer investigation mode, in particular to an excitation method for effectively solving the problem of deep well longitudinal and transverse wave micro-logging excitation first-arrival wave energy. And (3) knocking excitation and underground three-component receiving by using a knocking clock, and directly and quickly acquiring by using a shallow seismic recording instrument 7 and a knocking clock device. The invention utilizes the waste oxygen tank 13 filled with fine sand to manufacture the knocking device of the clock, and improves knocking output and excitation energy by nearly 10 times. A sleeper 17 is manufactured, and the two ends and the edges of the sleeper 17 are wrapped and welded by steel plates, and meanwhile, saw-tooth nails 18 (saw-tooth surfaces) are embedded in the contact surface of the sleeper 17 and the ground 5 and a truck 16 is used for pressing the sleeper 17, so that the maximum shearing stress is ensured to be impacted, and the coupling of the sleeper 17 and the ground 5 is also ensured. The wellhead geophone 6 is used for recording a first arrival signal to correct the first arrival time shift generated by knocking a clock, so that the consistency of micro-logging recording waves is improved. The targeted knocking device for the clock has the advantage that the function of one-source double waves (longitudinal waves and transverse waves) is realized. And finally, carrying out RT data rotation on the vibroseis excited micro-logging records to finally obtain the high-quality micro-logging records. The invention is suitable for surface survey of longitudinal and transverse wave seismic exploration projects, solves the problems of weak transverse wave excitation energy and survey depth of micro-logging in wells, is fast in design and device under the conditions of local materials of seismic teams and no need of purchasing new fittings again, has strong operability and applicability, realizes simultaneous acquisition of transverse wave and longitudinal wave records by the device, has high signal-to-noise ratio and first arrival wave definition of the micro-logging records, is accurate and reliable in picking up the first arrival position, provides an effective method for subsequent surface survey of the longitudinal and transverse waves, and has better application prospect.
Based on the same principle, the embodiment also discloses a transverse wave collision bell knocking micro-logging surface layer analysis method. As shown in fig. 4, the method includes:
s100: and when the transverse wave collision clock strikes the micro-logging surface layer analysis device to form the longitudinal wave source and the transverse wave source, controlling the underground three-component detector to collect a collected signal formed by the signals sent by the longitudinal wave source and the transverse wave source after passing through the stratum.
S200: and carrying out time shift correction on the acquired signals.
S300: and performing rotation calculation on the corrected acquisition signal to obtain R and T components.
In a preferred embodiment, as shown in fig. 5, the step S300 of performing rotation calculation on the corrected acquisition signal to obtain R and T components specifically includes:
s310: and carrying out RT rotation on the X and Y components of the transverse wave signal of the acquired signal to obtain the maximum corresponding angle of the root-mean-square amplitude.
S320: and carrying out rotation calculation on the X and Y components according to the angle to obtain R and T components.
Because the principle of solving the problems of the method is similar to the device and the system, the implementation of the method can be referred to the implementation of the device and the system, and the detailed description is omitted.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer device, which may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
In a typical example, the computer device comprises in particular a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the method as described above.
Referring now to FIG. 6, shown is a schematic diagram of a computer device 600 suitable for use in implementing embodiments of the present application.
As shown in fig. 6, the computer apparatus 600 includes a Central Processing Unit (CPU)601 which can perform various appropriate works and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM)) 603. In the RAM603, various programs and data necessary for the operation of the system 600 are also stored. The CPU601, ROM602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output section 607 including a Cathode Ray Tube (CRT), a liquid crystal feedback (LCD), and the like, and a speaker and the like; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted as necessary on the storage section 608.
In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the invention include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (13)
1. A transverse wave clock-striking micro-logging surface layer analysis device is characterized by comprising a clock-striking device, a striking excitation device and a supporting device;
the support device is used for suspending the clock striking device and fixing the impact excitation device, and the clock striking device impacts the impact excitation device from the inclined direction under the action of external force to generate a longitudinal wave source and a transverse wave source.
2. The shear-bell jar strike micro-logging surface analysis device of claim 1, wherein said strike-bell strike device comprises an oxygen tank filled with fine sand.
3. The transverse-wave-bell-strike micro-logging surface analysis device of claim 2, wherein the bell-strike device further comprises ear-clasps at both ends of the oxygen tank for suspending the oxygen tank and T-shaped handles for applying force to the oxygen tank.
4. The shear-bell strike micro-logging surface analysis device of claim 1, wherein said strike stimulation device comprises a crosstie and a serrated nail fixed to the ground;
the steel plate is welded on the surface of the sleeper, which is impacted by the striking clock knocking device, the sawtooth nails are embedded into the sleeper, and the supporting device is arranged above the sleeper so as to fix the sleeper on the ground.
5. A shear-bell-strike micro-log surface analysis system comprising a shear-bell-strike micro-log surface analysis device according to any one of claims 1 to 4, a downhole three-component geophone, and a seismic recording instrument;
the seismic recording instrument is used for controlling the underground three-component detector to collect the collected signals formed by the longitudinal wave source and the transverse wave source after the signals sent by the longitudinal wave source and the transverse wave source pass through the stratum while the transverse wave clock strikes the micro-logging surface layer analysis device to form the longitudinal wave source and the transverse wave source, time shift correction is carried out on the collected signals, and the corrected collected signals are subjected to rotation calculation to obtain R and T components.
6. The system of claim 5, wherein the seismic recording instrument is configured to receive a short-circuit signal generated when the shear-bell strikes the micro-logging surface analysis device to form the longitudinal wave source and the transverse wave source, and to control the three-component detector to collect the collected signal.
7. The shear-bell strike micro-log surface analysis system of claim 5, wherein said seismic recording instrument comprises a seismic recorder, a first shear trigger line, and a second shear trigger line;
the first ends of the first transverse wave trigger line and the second transverse wave trigger line are electrically connected with the seismograph, and the second ends of the first transverse wave trigger line and the second transverse wave trigger line are respectively connected with the clock striking device and the impact excitation device;
the first transverse wave trigger line and the position where the clock striking device is connected and the second transverse wave trigger line and the position where the impact excitation device is connected are the positions where the clock striking device and the impact excitation device impact.
8. The shear-bell-strike micro-logging surface analysis system of claim 5, further comprising a geophone positioned at the micro-logging wellhead;
the geophone is used for picking up first arrival signals formed by signals emitted by the longitudinal wave source and the transverse wave source passing through the stratum, and the seismic recording instrument is used for carrying out time shift correction on the acquired signals according to the first arrival signals.
9. The shear-bell-strike microlog surface analysis system of claim 5, wherein said seismic recording instrument is configured to perform RT rotation on X and Y components of the shear signal of the acquired signal to obtain a maximum corresponding angle of RMS amplitude, and perform rotation calculation on said X and Y components according to said angle to obtain R and T components.
10. A transverse wave collision bell knocking micro-logging surface layer analysis method is characterized by comprising the following steps:
the method comprises the following steps that when a transverse wave collision clock strikes a micro-logging surface layer analysis device to form a longitudinal wave source and a transverse wave source, an underground three-component detector is controlled to collect collected signals formed after signals sent by the longitudinal wave source and the transverse wave source pass through a stratum;
time shift correction is carried out on the collected signals;
and performing rotation calculation on the corrected acquisition signal to obtain R and T components.
11. The method of analyzing a surface layer of a shear-bell-strike micro-log according to claim 10, wherein the rotating the corrected acquired signals to obtain R and T components specifically comprises:
carrying out RT rotation on X and Y components of transverse wave signals of the collected signals to obtain a maximum corresponding angle of root-mean-square amplitude;
and carrying out rotation calculation on the X and Y components according to the angle to obtain R and T components.
12. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor,
the processor, when executing the program, implements the method of any of claims 10 and 11.
13. A computer-readable medium, having stored thereon a computer program,
which program, when being executed by a processor, carries out the method of any one of claims 10 and 11.
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