CN1004586B - Equipment used in exploratory well for geophysics survey - Google Patents

Abstract

The present invention relates to a device for carrying out geophysics measurement in exploratory wells. The present invention comprises a track, wherein at least one part of the track is used for supporting a sensor. The track moves continuously in an exploratory well by a sling and a guide pulley device, the track is matched with a relevant peg and a stator stop plate, and the partial track for supporting the sensor is at least positioned in a relatively fixed position with the wall of the exploratory well in each measurement period.

Description

A kind of equipment that geophysics is measured in prospect pit

The invention relates to and in prospect pit, carry out a kind of equipment that geophysical survey is used.

In prospect pit, measure, two kinds of main modes are arranged usually.

First kind of measuring method is commonly referred to as ultrasonic measurement, is an end that equipment is lain in rope, is lowered in the prospect pit and measures.Equipment comprises, one or several transmitter and one or several receiver are added to the suitable moment to open or make the device of transmitter operation, and the signal that receiver receives is launched back the device that ground is write down and handled.

Ultrasonic measurement is normally carried out when equipment moving, that is to say when equipment to carry out when landing ground moves with slow speed in prospect pit.Equipment moves with quite low speed in prospect pit that (several meters of per minutes) is unlikely to cause any parasitic noise in receiver.

Utilize detectoscope as receiver, these detectoscopes are actually the detector of reaction vibration pressure.Detector receives wave of compression may also receive the extraneous wave that is caused and caused by the surrounding medium unevenness by wave of compression.After each emission, the duration of each useful signal of receiving on detector, its magnitude is several milliseconds, and it depends on the frequency that transmits.

Carry out when equipment moves owing to measure, therefore, the drag rope of equipment is stretched constantly, and is wound on continuously on the drum, and the rotation of drum is in check, for example, is placed on the control of ground mobile device.

The ultrasonic measurement devices of many patterns of current employing can be got rid of the ripple of propagating in equipment self, and formation and the axisymmetric cylindrical transaudient path of prospect pit.

Second kind of metering system and vertical seismic profiling (VSP), the inclination seismic section, or drilling well earthquake portion face is relevant, and second kind of metering system is different fully with first kind of metering system, and as a reference, preamble has been looked back first kind of metering system.

In fact, for example, when carrying out petroleum prospecting, must determine the prospect pit character and the feature of subterranean strata on every side.For this purpose, suitably knock collision (weight whereabouts) with demolition set (explosive charge), or with being connected ground Vib. on the ground rather than in prospect pit, form seismic energy.The ripple that seismic energy forms is propagated in subterranean strata, no longer receives with detectoscope with jug.Jug is designed to as if knotmeter, the reaction vibration velocity; Jug or place on the ground, receive from different subterranean stratas reflections and or the ripple of refraction; Perhaps jug is put into prospect pit, but when this kind situation, imperative make jug directly and the prospect pit wall keep in touch; Compare with ultrasonic measurement, then when ultrasonic measurement, detector always is immersed in the drilling well of full of liquid.

Under any circumstance, jug or knotmeter all are to react vibration velocity, must measure the various forms of seismic events that produced by the ground emitted energy.In fact, direct mechanical between emitter and the ground connects will cause various forms of ripples, because the seismic energy of being launched during exploration must run into the unevenness of subterranean strata,-therefore, can not think from jug or several jug to receive a special Wave in the ripple, it is just satisfied perhaps to receive a scalar.On the contrary, jug must receive all ripples (wave of compression or shear wave) and receive ripple on all directions that ripple is propagated, so that can differentiate all possible vibration velocity direction when handling.

With reference to the above and contrast echo wave measurement, noticeablely more conclusively be: when measuring with second kind of measuring method, jug or many several jugs are maintained fixed with the prospect pit wall, and in order to ensure gratifying connection jug are relied on the borehole wall.

The signal that jug receives is through handling, can access from the launching site to the jug between the useful data of the subterranean strata that ripple moved past.

Can adopt many diverse ways, jug can be placed along prospect pit regularly or brokenly, handle the data that are recorded in respectively on the different jugs again.Also can adopt the equipment of a jug of carrying, when measuring, jug is fixed on the suitable position of prospect pit at every turn.

Main difficulty in second kind of metering system is: up to now, also do not find effective ways, can make jug keep gratifying with the prospect pit wall and be connected.

For overcoming this difficulty, once done a trial, and in French Patent (FRP) the 1st, 169, be described in 871.In prior art, this product comprises the equipment that a cylindrical component is housed, and cylindrical component remains on the jug assembly in the prospect pit on the desired height, and prevents that with key shape coupling arrangement the jug assembly from rotating with respect to equipment.The jug assembly comprises two arc-shaped spring pieces, is installed in the both sides of the equipment that is positioned at drill centre symmetrically, and spring is hinged each other with pivot pin, be installed in intermediate article that device body is connected on.One of them spring leaf is rested on the prospect pit wall, and a cushion block is equipped with on the top of a number spring leaf then solidly.The cushion block pivot props up on the mid point of spring.The borehole wall that contacts with the outside surface of said cushion block is just in time facing to the borehole wall that first spring rests on.Again jug is fixed on the inside surface of cushion block, is wired on the multiplying arrangement that is positioned at device body.

The equipment of this pattern has significant improvement, has surpassed the practice of jug being placed on the ground or placing at interval along the prospect pit wall.Yet, complete answer is not proposed the direct connectivity problem with the prospect pit wall.

Although cushion block is fully firm, and the tension force of spring makes cushion block when measuring, along any slip skew can not be arranged on the prospect pit wall, but in fact by the emission energy formed extraneous wave then in device body, propagate in the spring leaf He in the cushion block, and received by jug.This is the rigidity by equipment and cushion block, and on less degree, is caused by spring leaf.

Other shortcoming is: under the measurement situation of measuring, jug is only with regard to an azimuthal orientation, and therefore, what can survey is a kind of ripple of form.

At present the key issue of the shortcoming that occurs is: the spring leaf of jug being installed, only being had one degree of freedom, is that the displacement direction by spring is determined.It is flexible that the structure of spring and residing stress do not allow spring all to have on all directions.The result is the coupling between abatement apparatus and jug and each quality of relevant cushion block effectively.In addition, compare with the jug assembly, the quality of equipment is sizable.The caused adjection of quality is bigger along with the rigidity increase that connects between device body and the jug assembly.

Have to be noted that because be rigidly connected between equipment and the jug quality, and the quality of jug is less than the quality of equipment, has therefore stoped jug to receive the dither of propagating wave spectrum.Therefore high frequency is deleted, and its result has formed a dither wave filter just as the prospect pit wall of device body and relative resilient.

Be applied to second kind of device in the metering system and also comprise equipment moving device, be installed on the equipment with traction and suspender.

No matter the traction and the suspender kind of the equipment of carrying, no matter these devices are flexibility or rigidity, also no matter is made up of drag rope or pull bar, measurement can one be followed a full-height of carrying out continuously up to prospect pit, for example can comply with following method and carry out.

Measuring equipment is lowered into predetermined depth or absolute altitude, described equipment is placed gone up in position, rest on the prospect pit wall with the telescopic arms device and be maintained fixed, then, measure with regard to the prospect pit absolute altitude of being considered.

Because measuring is to carry out on a higher absolute altitude next time, so must Zhe return telescopic arms and operate draw-gear equipment is moved up.Then on the another location to operate with identical mode above-mentioned.

See that easily continuous coverage is also turned round continuously with regard to inevitable requirement traction and mobile device; These devices will stop to move when measuring, and will move in twice measurement at interval.With under the situation of drag rope, then non-productive operation must be arranged.For the earthquake between abatement apparatus and ground mobile device coupling, thus during whole measurement, rope is loosened, and after a series of measurements are over the described rope of tensioning again.

Therefore, can see there is the one substantial loss of time, comprising adjustment one by one to the certain number of times in various device position in the prospect pit with respect to whole continued operation.

The present invention is especially relevant with above-mentioned second kind of metering system, but is equally applicable to first kind of metering system, as long as replace jug with underwater detectoscope, or utilizes jug and underwater detectoscope to measure array mode for two kinds simultaneously.

This invention is a target to carry out geophysical survey equipment in drilling well, forms the equipment of this pattern, includes a measuring equipment, a sensor will be installed on the described measuring equipment at least; Device along the borehole wall mobile device: be installed in the elastic device on the described equipment, sensor is close on the appropriate location of the described borehole wall during each is measured.The distinguished characteristic of this invention is: measuring equipment is made up of the endless belt, has at least the part endless belt that described sensor is play supporting role, and the device that the endless belt is rotated continuously.Described covering is with the device that rotates, and cooperates corresponding stop and positioning and locking device, makes described endless belt supporting sensor part at least, with respect to described borehole wall, is maintained fixed during each is measured.

When making measuring equipment mobile continuously, because sensor is motionless during each is measured, so the earthquake of having eliminated between mobile device and the measuring equipment is coupled at the continuous operation equipment mobile device.

The distinguished characteristic of another of this invention is covered the device formed of band by many, together with a plurality of jugs, can measure simultaneously on the relative a few part prospect pit walls of direction.

Equally, the present invention can measure around carrying out in the prospect pit.

The remarkable characteristic of another of this invention, jug are with can being connected to device body at the flexible flexible member of both direction at least, and the minimal elastic of the subterranean strata that the elasticity of elastic component is passed with prospect pit at least equates.In addition, the resonant frequency of the quality of jug or several jugs and elastic device only equals the resonant frequency of the quality and the said minimal elastic of said jug or several jugs at the most.

With can jug being connected on the device body at the flexible device of both direction at least, almost completely eliminated the coupling between device body quality and the jug quality, thereby might eliminate the device body quality measuring caused parasitization.In addition, connect by means of elasticity, jug can vibrate by the vibration velocity component direction that may receive ripple.

For the people that understand thoroughly this technology, below considering, behind narration and the accompanying drawing, will be more obvious.

Fig. 1 be put into measuring equipment the prospect pit diagrammatic cross-section, described measuring equipment shows with partial cutaway, shows first kind of concrete device of the present invention.

Fig. 2 is along the sectional view of II-II direction among Fig. 1.

Fig. 3 is that the part that is applied to equipment shown in Fig. 1 is covered the band skeleton view.

Fig. 4 is the partial illustration that shows second kind of embodiment of measuring equipment in the part prospect pit.

Fig. 5 is along V-V directional profile figure among Fig. 4.

Fig. 6 is according to this invention, four fragmentary, perspective views of covering band that adopted among the third embodiment of equipment.

Fig. 7 is according to the third embodiment, the cross-sectional figure of equipment.

Four fragmentary, perspective views of covering band of measuring around Fig. 8 does.

Fig. 9 is the partial illustration that band is covered on guiding rolling rail top.

Figure 10 is the part sectioned view that covers band among Fig. 3 along the part of X-X direction intercepting.

Equipment 1 shown in each figure is that this is used for let-down in prospect pit 2, and prospect pit 2 is by ground 5 and be the cylindrical borehole wall 3 demarcation substantially, no matter whether the borehole wall 3 has scraggly surperficial 4.Prospect pit 2 subterranean formation penetrated do not show particularly that in the drawings some characteristic of subterranean strata has to be determined.

The gearshift of opertaing device 1 is placed on the ground 5, and these devices are represented with square 6 in the drawings.

In better embodiment of the present invention, the effect of control device 6 is by the middle drag rope 7 by idle pulley 8 guiding as an example, measuring equipment 1 is produced continuously move.

As illustrated in fig. 1 and 2, measuring equipment comprises a body of being made up of shell 9, and it is openings that shell has one side 10 at least, and it is hung up on its top with rope 7.

Bar 11 is housed in shell 9, and as one of equipment solid retaining element, its top is rigidly fixed on the stationary shaft 12 of upper end revolving drum 13, and described axle 12 is rigidly secured on the said housing 9.The lower end of bar 11 is as an end bearing seat of spring 14, and the other end of spring is connected on the revolving drum 15 of bottom.

Along 3 guidings of prospect pit wall, an end pivot of each arm 19 props up on apparatus casing measuring equipment 1 by telescopic arms 19, and the other end is equipped with roller 20, and roller can roll along prospect pit wall 3.Each arm 19 is handled by lifting jack 21, and it can move on to deployed position with getting swing arm, or moves on to the retracted position represented as dotted line among Fig. 1.Lifting jack is by the control assembly or the connecting box sap pressure supply stream that are contained in the device body.

The Z-axis 23 of equipment basically with axially being consistent of bar 11, and lateral excursion is arranged with respect to the vertical axis 24 of prospect pit.In order to guarantee to measure, measuring equipment 1 is advisable with 120 ° of angles of mutual maintenance between the collapsible wall 19 with respect to the tram of surveying local prospect pit wall 3.(as shown in Figure 2)

Cover with 16 endless belts of forming on drum 13 and 15,, advance along suitable direction with the spring 18 that is connected center-pole 11 by being arranged on drum 13 and near 15 tensioning and guide rollers 17.

Cover and be with 16 to move on guiding rolling rail, the groove 25 of roller 26 and the angle bar 27 that is rigidly fixed on the device body limit covering band, and groove 25 is with 16 flanges 28 meshing mutually with covering, shown in Fig. 4 and 9.

Shown in Fig. 3 and 10, cover and be with 16 to form by covering band piece 29a and 29b.Described cover the band piece with 30 trunnions 31 of hinge eyes each other pivot prop up and be linked together.Cover two and to sandwich one between the band piece 29a and cover band piece 29b, this just can make a 29B by alternating sequence followed by a 29a.Cover band at every and make a suitable blind groove 32 of shape arbitrarily on the piece, but be good with rectangle, the groove of firmly an intermediate support plates 33 being packed into, the thickness of support plate 33 should surpass the degree of depth of groove 32.In intermediate support plates 33, make a groove 34 equally, firmly an elasticity absorber block 35 is packed in the groove 34.One or several sensors, for example jug 36 is combined by three different directions, and each sensor can vibrate on a preferred direction, therefore surveys the oscillating component of propagating by described direction.In the embodiment shown in fig. 3, three jugs 36 are pressed the azimuthal orientation of three quadratures, and are installed on the elasticity absorber block 35, in this way the mechanically coupling between elimination and the measuring equipment 1.

Stop and locking device (its effect will be narrated it in conjunction with the operation of measuring equipment hereinafter) are installed in and cover on band piece 29a and the 29b, make to cover to be with 16 when prospect pit wall 3 moves, and are adjacent to the borehole wall 3.Stop and locking device have a rigid plate 37 to be installed in the front of jug 36 particularly including covering at each on the band piece 29a, the dull and stereotyped outside surface 38 that faces toward prospect pit wall 3 is provided with the nail post of stop spike-tooth 39 or any suitable type, and described spike-tooth preferably evenly is distributed on the above-mentioned whole outer surface 38.The height of spike-tooth 39 and shape will be selected with the degree of depth of required insertion prospect pit wall 3, therefore, also be by cover with 16 with effective connection of described prospect pit wall 3 be used for selecting.

Jug group 36 can adjust along the distribution of covering with 16 total lengths, and considers according to the position of the borehole wall 3 that will survey usually.

To cover band and the contacted position of prospect pit wall and prevent described any slip of covering between the band portion and the described borehole wall in order to increase, also used spike-tooth 60 both to be installed in and covered also to be installed on the band piece 29a and covered on the band piece 29b.Spike-tooth 60 or other similar stop part can be distributed on the surface of covering band piece 29a and 29b by any needed general layout.Yet, make the tip 61 of stop spike-tooth be positioned at same plane, lean on the back than the determined plane of check plate 37 inside surfaces slightly.To cover with 16 by check plate 38 and spike-tooth 60 like this, simultaneously and remain on certain position against the prospect pit wall.

When covering of adopting contained the jug 36 of the above-mentioned type of quite big quantity with 16, very rough surperficial 4 even prospect pit wall 3 has, also can guarantee to have at least some groups of jugs 36 to demonstrate the super result of effective survey.

In order to utilize the covering of maximum quantity on the useful position that leans against prospect pit wall 3 to be with piece 29a and 29b, in measuring equipment 1, load onto supporting and fixed bit device 40.Described device 40 is installed on the bar 11 by proportional spacing.Each assembly 40 comprises: be rigidly fixed in sleeve pipe 41 and spring 42 on the center-pole 11, spring 42 can stretch on both direction and be contained in the sleeve pipe 41 at least.Described spring 42 is fixed on the thrust block seat 43, and thrust block seat 43 pivots prop up and are connected on the bearing support 44, and bearing support 44 is contained on the axle of described thrust block seat rotatably about an axis.

Comprise an equipment that covers with 16, its operating process is described as follows referring to figs. 1 through 3:

When landing ground 5 moved up, 7 pairs of measuring equipments 1 of winch rope applied tractive force after measurement mechanism is lowered to prospect pit 2 bottoms.Continuous reeling rope 7 makes measuring equipment 1 upwards operation continuously, by the retaining element in the equipment, especially housing a and be rigidly fixed in axle 12 on the described housing and make to cover as medium and be with 16 to be subjected to displacement along arrow F direction, drum 13 make to cover along the displacement of arrow F direction and are with 16 to rotate.Because covering band, part is fixed on the borehole wall 3 with spike-tooth, be positioned at the extreme higher position and be with piece and described wall to keep motionless with covering of 29s sign, occupy with what 29i indicated up to it and to cover band piece position, at this moment measuring equipment has moved past and has been equivalent to cover band piece 29s and covers distance between the band piece 29i.Every covers time interval that band piece and borehole wall relatively keep motionless and has determined measurement period, and jug 36(also relatively keeps motionless with the prospect pit wall during this period) can survey the vibration of being propagated in deep-well 2 subterranean strata on every side at any time.

In order to guarantee the described band piece that covers, thereby find interested rock stratum with respect to the accurate location of device body.Be provided with on upper end roller 17 that a kind of device (not showing out in the drawings) can be used for surveying at least and transmission is covered band piece 29s and passed to the landing ground top layer and pass through.

The above does not relate to vibrative acoustic emission.Available traditional method is carried out, and its equipment can be contained in the control device 6, or transmitter independently is contained in covering on the band piece horizontal level of measuring equipment 1.

Adopt the stream situation of independently shaking, in covering band piece 29b, make a sound groove 62, accept absorber block 63 with this, similar absorber block 35 in covering band piece 29a, acoustic wave source 64 is installed on the absorber block 63, replace the jug 36 be on the same position, can resemble like this with the identical method and apparatus body maintenance elasticity of the jug coupling that disappears.

Telemetry receiver 65 interrelates with acoustic wave source 64 and is controlled by junction box 22.Telemetering device is designed to can control sound source 64 by telemetry receiver 65, and collects the data that transmit by jug, because of these devices are to be described in detail by the people who is engaged in this technology knows no longer.

Covering on the band piece 29a, a telemetry transmitter 45 also is installed, the data that it receives jug are sent to junction box 22.

Preferably manipulation telemetering device 45 and 65 necessary control device are concentrated in the described connecting box 22.

Owing to rough surperficial 4 of borehole wall 3 causes the difference of covering band (16) contact length, adjust with measuring equipment medi-spring 14.

Therefore, device of the present invention, can be used for the described second kind of metering system of this explanation brief introduction part mobile measuring equipment 1 and make jug 36 and borehole wall 3 keep relative fixed continuously, perhaps move described equipment discontinuously, as the situation of first metering system.

Another kind of concrete the device as shown in Figure 4 and Figure 5 of measuring equipment 1, equipment 1 comprise that two cover band 16a and 16b and all annexes shown in accompanying drawing 1 to 3, are not going to repeat.Article two, cover the band equipment that 16a and 16b formed, can carry out vibration detecting at two positions vis-a-vis of borehole wall.In this concrete device, telescopic arms 19(can't see in Fig. 4) be different from along the position that borehole wall moves and cover the band position that 16a and 16b acted on.Center-pole 11 is replaced by two bar 11a and 11b, bar 11a is distributed to cover band 16a and bar 11b and distribute to and cover band 16b.

Another kind of concrete device as shown in Figure 6 and Figure 7.Measuring equipment comprises that being combined into right four covers band 16a to 16d.Appointment is covered band 16a and is contacted with the position of two opposite faces of borehole wall with 16b, contact and specify two other to cover the perpendicular borehole wall position in band 16c and 16d and aforementioned position, article four, cover bar 16a 46 installations to 16d round the hollow center bar, cable and lead can pass center-pole 46.The main body 47 of measuring equipment 1 has aperture 48 and conduct to cover the undercut 49 of tape channel.Like this, can survey simultaneously and cover the vibration that band 16a propagates in four positions of the corresponding borehole wall of 16d.According to tangible operating condition, covering band 16a is inequality to the length of 16d, and the inside a pair of covers band 16c and 16d and cover weak point of band 16a and 16b than outside a pair of.With this understanding, effectively measure length and have the pass than short a pair of covering, described effective length is meant covering band piece 29s and covering the distance of being with between the piece 29i shown in Fig. 1.

Need measure on every side in some situation, according to the present invention, available shown in Figure 8ly have four survey instruments that cover band and carry out.

Can find out obviously that only drawing in the synoptic diagram is the necessary parts of clear understanding device, other necessary parts can be with reference to other accompanying drawings.

Drilling well 2 usefulness shells 50 represent, cover and are with 51 to 54 in order to expose four of combining in pairs, and shell 50 is cut a part, to 51～52 cover band be enclosed within 53～54 this to covering the band the inside.

In this concrete device, device 55 is used for launching sound wave, is used for receiving the vibration of propagating in the subterranean strata around the drilling well and install 56.

Acoustic transmitter 55, refer to that specifically transmitter 55a to 55d, is installed in to cover and is with on 51 and 52, acoustic receiver or jug 56 or refer to specifically that receiver 56a is installed in to cover to 56e and be with on 53 and 54, keep the right angle with acoustic transmitter, to guarantee that each transmitter 55 is between two receivers 56.Transmitter 55 and relative receiver 56 are located in the same horizontal plane in addition.Consult Fig. 8, can know and see, several from top to bottom second transmitter 55b are with still the 3rd receptacle 56c of number is relevant from top to bottom.Other two cover with the power valve on 52 and 54 and receiver and are positioned at the plane that transmitter 55b and receiver 56c limit, and represent with an ellipse 57 among the figure, and different ellipses 57 are on the differing heights in the drilling well.Article two, the distance between the adjacent ellipses line limits the thickness of the subterranean strata that will measure.Distance represents with arrow 58, is equivalent to the distance between two adjacent transmitters 55 on two adjacent elliptical areas 57 or two adjacent receivers 56.In example shown in Figure 8, be called transducer spacing between two adjacent transmitter or two adjacent reception devices, be identical, equal four width that cover band piece 29, but can shorten or increase distance where necessary.Distance between the inner sensor has been determined to cover in pairs with the difference in length between 51 to 54.A kind of simple practice is selected inner sensor spacing, and the length difference that regulation is covered between the band is the multiple of described inner sensor spacing.Therefore, the position that transmitter 55 and receiver 56 are placed, the position that will adhere to when just measuring with these transmitters and receiver also draws good result.

In the arrangement that replaces, acoustic transmitter can be installed in every pair of relevant covering with the order that replaces with receiver and be with, as cover and be with 51 and 53, so that be positioned at same horizontal plane, covers with receiver on 51 for covering with the transmitter on 53, also can install conversely.

The above has introduced the device of mobile measuring equipment 1, and this equipment is to control with the ground 5 of drilling well 2.Obviously, when if the used total size of equipment all makes this become a reality in prospect pit size and the above-mentioned prospect pit then can use the separate equipment mobile device, for example, in measuring equipment, be equipped with a pull-over gear, it can be according to the metering system that will implement, measuring equipment was both advanced serially, also can be indirect advance.

In order to make each jug 36 do suitable vibration, must guarantee that this rock noise detector and device body 9 and the 47 usefulness mechanical systems that link with it carry out decoupling along the vibration velocity component direction of being surveyed.In fact the minimal characteristic elasticity s of prospect pit wall 3 and jug form an elasticity coupling.Because the elasticity S of absorber block 35 is to the effect of described jug, making gross mass is the device body of M, other parts of attachment arm 19 and equipment, assembly with jug group 36 compositions, check plate 37 and absorber block 35, and the elasticity S of rock frame has formed the elastic system of a balance jointly; In order to obtain effective decoupling.Because mass value M is relatively greater than m, thereby must correspondingly stipulate higher elasticity S, calculating shows, when S=s, the vibration velocity of each jug assembly is half of rock frame vibration velocity, like this, must the ensure the quality of products resonant frequency of M and elasticity S equals the resonant frequency of quality m and elasticity s.

Included stop and locking device in the measuring equipment 1 shown in the accompanying drawing 1 to 10.Be in order to guarantee that the band that covers that covers between band piece 29s and the 29i is maintained fixed the position with respect to the prospect pit wall.Obvious, form the material that covers band if change the orientation of covering band or change, these devices can improve and/or can partly leave out at least.In fact, if prospect pit has a transverse axis rather than Z-axis as shown in fig. 1.Then just might use such measuring equipment, its weight and/or wherein applied parts, can save said those supportings in front and locking device, but significantly condition is that said application component is wanted can supporting part to cover band and made it keep firm during each is measured.

Similarly, covered the belt endless belt when what adopt, has an adhesion factor for horizontal or vertical prospect pit wall, then in each side amount in period, cover band and can not produce slip, in the case, just might improve stop and locking device in a large number fully with prospect pit, or, be beneficial to take into account the physical property that constitutes the material that covers the belt endless belt so that can be cancelled.

Claims (20)

1, be made for a kind of equipment of geophysical exploration in prospect pit, it includes a measuring equipment, and at least one sensor is installed on described measuring equipment; Make equipment along the moving device of prospect pit wall shift, be installed in the resilient supporting unit on the described equipment, this device makes sensor be in the position of very pressing close to the described borehole wall during each is measured, it is characterized in that, it contains an annular that is installed on the above-mentioned measuring equipment and covers band, and described covering brings to a rare part as described sensor supporting; The device that the endless belt is rotated continuously, described covering is with the device that rotates to cooperate suitable stop and fixing and locking device.At least be the stop and the fixing and locking device of the supporting sensor part of described endless belt, during each is measured, be maintained fixed with respect to described prospect pit wall.

2, according to a kind of equipment of claim 1, it is characterized in that: the endless belt be length constant cover band, the above-mentioned band that covers can link together mutually with changeing and constitutes by independently covering the band piece, the described band that covers can lead mobile on the rolling rail in one.

3, according to a kind of equipment of claim 2, it is characterized in that, contain a plurality of sensors, sensor is a sonic transducer, arranges along covering band total length compartment of terrain.

4, according to a kind of equipment described in the claim 3, it is characterized in that: the sensor combination in groups, every group comprises three sensors, is installed in respectively on three mutually perpendicular directions.

5, according to a kind of equipment described in the claim 3, it is characterized in that: the back side that each group sensor is installed in stop and locking device, at least form with a check plate, by the spike-tooth that is distributed on the described check plate entire contact surface, the outside surface of check plate is contacted with the prospect pit wall that it is faced.

6, according to a kind of equipment described in the claim 2, it is characterized in that: this equipment comprises one and is fixed on supporting and covers the elastomer block of band on the piece, and every group of the sensor is to be placed between elastomer block and the check plate.

7, according to a kind of equipment described in the claim 6, it is characterized in that, elastomer block be pressed be embedded in supporting cover the band piece rigidly connected, in the groove of intermediate support plates.

8, according to a kind of equipment described in the claim 1, it is characterized in that: elastic device is to constitute by being contained in fixture on the measuring equipment and the spring between the web member.Described web member then is installed on the thrust block seat with bearing pin, rests on the roller that covers the band roller guide with thrust block seat.

9, require 1 described a kind of equipment according to aforesaid right, it is characterized in that, this measuring equipment comprises a shell, housing has one side-facing to being subjected to the prospect pit wall of scotch effect-be opening at least, and the solid fixture of measuring equipment is made up of around the drum that covers band and change the center-pole that is subjected to the elastic device effect and two, and one of them described drum is that the solid stationary shaft with described drum is rigidly fixed on the aforementioned shell.

10, a kind of equipment according to claim 9, it is characterized in that: described device comprises a compensation system, the band degree of tightness of covering that causes because of the prospect pit wall surface is uneven in order to compensation changes.

11, a kind of equipment according to claim 1 is characterized in that: described device comprises and is used for guiding and makes measuring equipment lean against telescopic arms on the prospect pit wall that described arm is put between the position at a distance of hexagonal angle.

12, a kind of equipment according to claim 9 is characterized in that: measuring equipment has a vertical center line, in fact by the center-pole axis, and with respect to the prospect pit vertical center line lateral excursion is arranged.

13, according to a kind of equipment described in the claim 9, it is characterized in that: the drag rope by the mobile device continuous reeling is suspended on shell in the prospect pit.

14, a kind of equipment according to claim 1, it is characterized in that: described equipment comprises the device that is used for launching the obtainable data of jug.

15, according to a kind of equipment described in the claim 14, it is characterized in that: data-emitter comprises the device in the elastomer block that is contained in jug and is contained in receiving trap among the junction box of housing.

16, a kind of equipment according to claim 1 is characterized in that: measuring equipment contains many and covers band, and every covers band some groups of jugs all are housed.

17, according to a kind of equipment described in the claim 16, it is characterized in that: measuring equipment contains a hollow center body, be placed in the protective cover, protective cover is as four passages that cover band, the described band that covers rotates along centrosome in conjunction with pairing energy, can survey four parts that are actually the prospect pit that is positioned at four vertical direction.

18, according to a kind of equipment described in the claim 17, it is characterized in that: described measuring equipment contains and transmits and receives sensor, along two have different length and on two orthogonal directions, rotate cover band, place at interval, receiving sensor is installed in wherein described covering and is with, cover and be with and emission sensor is installed in another, each is actually and is positioned on the perpendicular plane of same and measuring equipment axis the sensor that transmits and receives that interrelates, and two relevant differences in length of covering between the band equal the multiple of two adjacent transmitter spacings.

19, according to a kind of equipment described in the claim 17, it is characterized in that: each bar covers band and comprises the calibrate AE sensor harmony receiving sensor of alternately arranging, make like this two interrelate cover band, wherein one described cover with on emission sensor and another cover with on receiving sensor be in the same surface level.

20, according to a kind of equipment described in the claim 2, it is characterized in that: carry the supporting of accepting sensor and cover the band piece and alternately arrange with the band piece that covers that does not carry jug.

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