CN201892747U - Seismic source equipment of vertical seismic profile for measuring zero offset and small well spacing - Google Patents
Seismic source equipment of vertical seismic profile for measuring zero offset and small well spacing Download PDFInfo
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- CN201892747U CN201892747U CN2010206127681U CN201020612768U CN201892747U CN 201892747 U CN201892747 U CN 201892747U CN 2010206127681 U CN2010206127681 U CN 2010206127681U CN 201020612768 U CN201020612768 U CN 201020612768U CN 201892747 U CN201892747 U CN 201892747U
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Abstract
The utility model discloses seismic source equipment of a vertical seismic profile for measuring a zero offset and a small well spacing, mainly consisting of a motor and a hammer anvil block, wherein the motor is a cylindrical three-phase linear motor and comprises a shell, a bearing, a primary winding and a secondary hammer lever; the hammer anvil block is coaxial to the secondary hammer lever; and a sealed anvil is driven to slide the bearing to be connected with the motor. The seismic source equipment has the characteristics that: the excitation frequency band is wide, the frequency is high, the repeatability and the consistency of the excitation wave are good and low-speed belt layer and low-energy consumption on the ground are avoided and the like.
Description
Technical field
This patent relates to oil and geological exploration techniques field, specifically is a kind of focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP).
Background technology
Vertical seismic profiling (VSP) claims VSP again, this technology is a seismic technology in a kind of well, because geologic prospecting and petroleum prospecting have proposed a series of high resolving power, high-precision requirement to seismic prospecting, cause the VSP technology to develop into the primary wave that not only utilizes on the record from the original single usage of only requiring formation velocity, also utilize its subsequent event, be used for studying the formation and the mechanism of transmission of seismic event in the actual formation medium, and further help to divide the stratum, follow the trail of oil reservoir etc.Observation station apart from also by 20 original～30M precisely to 2.5M or 5M.And the VSP technology has formed special instrument and equipment, the theoretical foundation that complete outdoor operation method and processing are explained gradually in evolution.With the surface seismic ratio, the VSP technology has lot of advantages.These advantages mostly come from the observed pattern that its wave detector places well, this mode makes that the VSP wave detector can be by receiving the earthquake information relevant with the stratum interface near bed boundary, and avoided the strong absorption effect of top layer low velocity layer, avoid coming near the strong interference in the face of land, can receive high-resolution up-downgoing ripple.
The VSP measuring method is to the requirement of focus:
The same with surface seismic, need focus to have consistance and wide as far as possible frequency band range preferably in the VSP gatherer process, conforming wavelet helps the contrast of the data of collecting, and frequency band is wide more, the resolution of data also can be high more.
The kind and the relative merits of existing domestic and international focus:
Seismic prospecting is from the development of decades occurring having passed through till now, the quality that how to improve data is its research emphasis always, wherein focus is one of key factor that improves field data collection, and various focus at the VSP data collection emerges in large numbers especially like the mushrooms after rain:
1. explosive source---be use the earliest, the most general focus, it has, and the single-shot energy is strong, frequency content is abundant, the resolution advantage of higher, but this focus repeatability is relatively poor, the contrast of influence record, dangerous property, and environment is polluted, therefore, adopt this kind focus to reduce gradually.
2. vibroseis---the relevant wavelet of vibroseis is known, repeatability better can satisfy VSP high-resolution acquisition conditional request, but owing to be to excite on the face of land, the interference on the face of land and thick covering area are more serious to high frequency absorption, are the more attractive a kind of focus of present VSP data collection.
3. air gun source---have the advantage of vibroseis, but equipment is complicated, and can only in water, excites, have " bubble effect " to disturb, be applicable to that generally marine VSP gathers.
4. sparker source---simple to operate, the efficient height, good reproducibility, the frequency band broad, but gross energy a little less than, just can reach requirement through repeating stack sometimes, the shooting conditions of sparker source is had relatively high expectations, influence sometimes obtains data.
5. shear wave VSP focus---be the key factor of shear wave earthquake exploration, existing shear wave source is to improve from the basis of p-wave source substantially, uses less at present.
The utility model content
The equipment that above-mentioned prior art exists is huge in order to solve, technical sophistication, energy consumption height, efficient is low, maintenance difficulty is big, cost is high and the problem that can not keep away face of land low velocity layer (LVL), and the utility model provides a kind of focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP).
The technical solution of the utility model is: a kind of focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP), mainly form by motor and hammer anvil seat.Described motor is the cylinder type three-phase linear motor, comprises shell, bearing, elementary winding and secondary hammer stem; The hammer anvil seat is coaxial with secondary hammer stem, connects together by hammering block sliding bearing and the motor that drives sealing.
The bearing of described motor is no cunning dynamic bearing, can vertically stand up or low-angle is finished when tiltedly putting and impulsed.
The power supply of this tubular linear motor and control signal, the cable of the Malong head by the motor end is by ground supply.
This equipment belongs to the mechanical pulsing single source, and key link is to have adopted by ground control down-hole tubular linear motor as motive force of earthquake, and focus impulses and a little is positioned under the low speed stratum, has avoided low velocity layer (LVL) to attenuation of seismic wave.Still the focus equipment that does not have this kind form at present both at home and abroad.Compared with prior art, it collects being longer than all over the body of many families, has following advantage:
1, the bandwidth that impulses, the frequency height;
2, impulse ripple repeatability, consistance is good, helps the processing of geologic information, processing and analysis interpretation;
3, impulse and a little keep away ground low speed belt;
4, energy is low, surveys only power consumption 20～40 degree of a bite well;
5, can conveniently realize Ground Control: wherein (1) effective energy about 1800～1400 joules adjustable; (2) single formula continuous several times impulses adjustable; When (3) continuous several times impulsed, the interval time that impulses was adjustable;
6, working security is good, and is little to environmental impact, only need bore 120 millimeters tens meters dark wells of a bite diameter;
7, volume simple in structure is little, easy to maintenance, and cost is lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the work synoptic diagram that impulses.
Among the figure, 1 is Malong head (tape cable), and 2 is hammer stem, and 3 is elementary winding, and 4 is sliding bearing, and 5 is the hammer anvil seat, and 6 for driving the hammering block sliding bearing of sealing, and 7 is shell.
Embodiment
As shown in Figure 1, the utility model mainly is made up of motor and hammer anvil seat 5.Described motor is the cylinder type three-phase linear motor, comprises shell 7, bearing 4, elementary winding 3 and secondary hammer stem 2; Hammer anvil seat 5 is coaxial with secondary hammer stem 2, is connected with motor by the hammering block sliding bearing 6 that drives sealing.
(patent No.: 03134201.9) motor is identical with our company's patent " a kind of focus equipment that is used for cased well " for said cylindrical linear structural principle in this programme, only the size temperature index is different with power, there is not complicated vibration exciter, has only a hammer anvil seat, directly contact with the stratum, each parts sequence number changes to some extent.
When this equipment uses in reality, place and bore at the bottom of the good source borehole, be in the state that vertically stands up, bear external pressure by shell 7.The power supply of this tubular linear motor and control signal, the cable of the Malong by the motor end 1 is by ground supply.
This equipment is by the Ground Control action that impulses, the secondary hammer stem 2 of cylindrical linear, by the control requirement hammer anvil seat is carried out hammering through sliding bearing 4, the principle of work of hammering is that the elementary winding 3 by the three-phase tubular linear motor of inverter supply makes motor internal produce a shifting magnetic field automatically, the conducting ring on the secondary hammer stem of this magnetic field intercepts 4 surfaces is induced potential, induced current just, make secondary hammer stem 4 but also do up and down that straight line moves thereby the conducting ring of current-carrying is subjected to not only the effect of electromagnetic force in the shifting magnetic field, impulse to finish with the linear velocity that is lower than the shifting magnetic field.
As shown in Figure 2, specifically, the action that impulses is:
Supply forward-order current by Ground Control to the elementary winding 3 of linear motor, the secondary hammer stem 2 of cylindrical linear breaks away from hammer anvil seat 5 and moves upward to the equipment top, the hammering of falling in two ways again of secondary hammer stem 2: first kind of mode is that secondary hammer stem 2 is accelerated motion whereabouts hammering hammer anvil seat 5 under action of gravity to the outage of cylinder type three-phase linear motor; The second way is that cylinder type three-phase linear motor is supplied negative-sequence current, and secondary hammer stem 2 is under the acting in conjunction of reverse reinforcing of linear electric motors and self gravitation, and with bigger acceleration whereabouts hammering hammer anvil seat 5, this mode is big than first kind of mode energy.When secondary hammer stem 2 impact hammer anvil blocks 5, make it to produce vibrations, hammer anvil seat 5 by with it directly the stratum, shaft bottom of contact with shock wave to around launch, promptly finish once impulsing.Repeat above-mentioned action and can finish repeatedly and impulse, to finish the VSP operation.
Claims (3)
1. focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP), it is characterized in that: this equipment mainly is made up of motor and hammer anvil seat (5); Described motor comprises shell (7), bearing (4), elementary winding (3) and secondary hammer stem (2); Hammer anvil seat (5) is coaxial with secondary hammer stem (2), is connected with motor by the hammering block sliding bearing (6) that drives sealing.
2. a kind of focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP) according to claim 1, it is characterized in that: described motor is the cylinder type three-phase linear motor.
3. a kind of focus equipment that is used to measure zero well spacing and The Small Well spacing vertical seismic profiling (VSP) according to claim 1, it is characterized in that: described bearing (4) is no cunning dynamic bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206127681U CN201892747U (en) | 2010-11-16 | 2010-11-16 | Seismic source equipment of vertical seismic profile for measuring zero offset and small well spacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206127681U CN201892747U (en) | 2010-11-16 | 2010-11-16 | Seismic source equipment of vertical seismic profile for measuring zero offset and small well spacing |
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| Publication Number | Publication Date |
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| CN201892747U true CN201892747U (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206127681U Expired - Fee Related CN201892747U (en) | 2010-11-16 | 2010-11-16 | Seismic source equipment of vertical seismic profile for measuring zero offset and small well spacing |
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| CN (1) | CN201892747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058296A (en) * | 2019-05-31 | 2019-07-26 | 西南石油大学 | A kind of shear wave earthquake signal excitation device of linear motor driving |
| CN110764133A (en) * | 2019-11-07 | 2020-02-07 | 山东东山古城煤矿有限公司 | Device and method for manually exciting controllable shock waves based on energy storage spring |
-
2010
- 2010-11-16 CN CN2010206127681U patent/CN201892747U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058296A (en) * | 2019-05-31 | 2019-07-26 | 西南石油大学 | A kind of shear wave earthquake signal excitation device of linear motor driving |
| CN110764133A (en) * | 2019-11-07 | 2020-02-07 | 山东东山古城煤矿有限公司 | Device and method for manually exciting controllable shock waves based on energy storage spring |
| CN110764133B (en) * | 2019-11-07 | 2021-06-25 | 山东东山古城煤矿有限公司 | Device and method for manually exciting controllable shock waves based on energy storage spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: XI'AN HONGCHUAN SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD. Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20141116 |
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| EXPY | Termination of patent right or utility model |