CN106555585A - A kind of logging instrument and its hydraulic sidewall contact device - Google Patents
A kind of logging instrument and its hydraulic sidewall contact device Download PDFInfo
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- CN106555585A CN106555585A CN201510608543.6A CN201510608543A CN106555585A CN 106555585 A CN106555585 A CN 106555585A CN 201510608543 A CN201510608543 A CN 201510608543A CN 106555585 A CN106555585 A CN 106555585A
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- resorption
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Abstract
The invention discloses a kind of logging instrument and its hydraulic sidewall contact device, can provide enough backup power for probe, shorten the entire length of logging instrument, so as to the operating risk for reducing constructing.The hydraulic sidewall contact device includes pull bar, the outer shell barrel of two ends sealing, main spring and hydraulic pump, the outer shell barrel completely cuts off to form epicoele and cavity of resorption by piston, the main spring fixed cover is loaded on the epicoele, and the upper end of the pull bar is fixed on the piston, and lower end stretches out the cavity of resorption to connect probe；In retraction working position when, the import of the hydraulic pump connect with the epicoele, and outlet connect with the cavity of resorption, move on the piston with being promoted, and then compresses the main spring, and is driven；In backup working position when, the epicoele is connected with the cavity of resorption, so that the main spring promotes the piston to move down, and then drives the pull bar to move down and stretch out probe.The present invention can provide enough backup power for probe, and length is short, simple structure.
Description
Technical field
The present invention relates to field of mechanical technique of logging well, more particularly to a kind of logging instrument and its hydraulic thrust
By device.
Background technology
Logging instrument is the instrument for completing logging operation, is divided into ground instrument and downhole instrument.Well logging
It is that a kind of engineering that geologic section is divided for the physical characteristic for finding out formation rock in drilling well is made
Industry, generally has electrical log, radioactive logging, acoustic logging, imaging logging and engineering log
(such as hole diameter, hole deviation) etc..
In prior art, some logging instruments, such as compensation density logger, litho-density tool,
Microsphere logging instrument and small-scale resistance spot welding instrument etc., need to pop one's head in 300 backups to the borehole wall,
Accordingly, it would be desirable to power source provides power, for backup or retraction probe 300.The power source
As telescoping ram 200.
Fig. 1 is refer to, Fig. 1 is a kind of structural representation of set-up mode of logging instrument in prior art
Figure.
As shown in figure 1, logging instrument generally includes electronic circuit 100, telescoping ram 200, probe
300 and connection grooved main body 400.Wherein, telescoping ram 200 is the core composition portion of logging instrument
Point, power is provided in down-hole, promote probe 300 to recline the borehole wall, 300 visited to pop one's head in
Survey；After the completion of well logging, probe 300 is bounced back to telescoping ram 200 the connection grooved of logging instrument
In main body 400.Telescoping ram 200 can be divided into mechanical telescoping ram and fluid pressure type telescoping ram, main
Outer shell barrel to be included, motor, spring assembly, guide post, linking arm and hole diameter arm.
Please further refer to Fig. 2, Fig. 2 is mechanical telescoping ram one kind setting side in prior art
The structural representation of formula.
Mechanical telescoping ram shown in Fig. 2 mainly includes outer shell barrel 210, motor 220, leading screw
230th, spring assembly 240, guide post 250, linking arm 260 and hole diameter arm 270.It is existing
Mechanical telescoping ram drives leading screw 230 to rotate by motor 220 so that leading screw 230 is laterally moved
It is dynamic, and then horizontal pulling force or pressure are applied to spring assembly 240；Now, spring assembly
Elasticity produced by 240 can act on guide post 250, so as to laterally outward promote or transversely
Guide post 250 is pulled inwardly.As the outer end of guide post 250 is connected with hole diameter arm 270 and connects
Arm 260 is connect, hole diameter arm 270 and linking arm will be promoted during 250 outer shifting of guide post
260 launch to both sides, and then drive the probe 300 on linking arm 260 to recline the borehole wall；Leading
During being moved to bar 250 laterally inward, drive hole diameter arm 270 and linking arm 260 to
Interior withdrawal, and then the probe 300 on linking arm 260 is driven away from the borehole wall.
Using said mechanism, by motor 220, leading screw 230, spring assembly 240, guide post 250
Driving-chain is constituted with linking arm 260, transmission link is more, and mechanical drive is limited, causes
Backup power is too small so that backup probe 300 is affixed to being short of power for the borehole wall, affects logging effect.
Furthermore, it is to meet well logging needs, leading screw 230 and guide post 250 are generally using longer
Structure setting, this longer structure increased the risk of logging operation；As driving-chain is present
Multiple links and drive mechanism is longer, cause the structural stability of whole telescoping ram 200 poor,
It is susceptible to failure；Due to its structure it is complex so that maintenance and change accessory it is complex.
In view of this, it would be highly desirable to for above-mentioned technical problem, optimization design well logging of the prior art
Instrument and its telescoping ram, provide enough backup power for probe, while reducing the operating risk of construction.
The content of the invention
The purpose of the present invention can be carried for probe to provide a kind of logging instrument and its hydraulic sidewall contact device
For enough backup power, shorten the entire length of logging instrument, so as to the operating risk for reducing constructing.
To solve above-mentioned technical problem, the present invention provides a kind of hydraulic sidewall contact device of logging instrument, bag
The outer shell barrel of pull bar and two ends sealing is included, also including main spring and hydraulic pump, the outer shell barrel is led to
Cross piston to completely cut off to form epicoele and cavity of resorption, the main spring fixed cover is loaded on the epicoele, described
The upper end of pull bar is fixed on the piston, and lower end stretches out the cavity of resorption to connect probe；In return
During contracting working position, the import of the hydraulic pump is connected with the epicoele, is exported and is connected with the cavity of resorption
It is logical, move on the piston with being promoted, and then compress the main spring, and driven on the pull bar
Move and the probe that bounces back；In backup working position when, the epicoele is connected with the cavity of resorption, so as to
The main spring promotes the piston to move down, and then drives the pull bar to move down and stretch out probe.
Outer shell barrel is divided into epicoele and cavity of resorption by piston by the hydraulic sidewall contact device of the present invention, is led to
Hydraulic pump is crossed to cavity of resorption being delivered to after the low pressure oil pressurization in epicoele, and the hydraulic oil in cavity of resorption is promoted
Move on piston, move on pull bar with being driven, and then drive probe retraction；Meanwhile, epicoele is connected with
Main spring, can compress main spring during moving on piston, then, when hydraulic pressure air pump inoperative
And epicoele is when connecting with cavity of resorption, the elastic-restoring force that main spring is produced can promote piston to move down,
To drive pull bar to move down, and then probe is promoted to stretch out.
It can be seen that, the hydraulic sidewall contact device of the present invention is using hydraulic oil as backup or the power of retraction probe
Source, compared with prior art using leading screw driving, the transmission link of hydraulic coupling is less, reduces
Loss in power transmission process, can provide enough radial direction backup power for probe, and then
Reduce the impact to backup of popping one's head in such as mud cake；Simultaneously as hydraulic-driven have small volume,
The advantages of power foot, compared in the form of leading screw with guide post driving in prior art, can
Largely to shorten the length of telescoping ram so that the structure of telescoping ram is compacter, greatly
Width reduces the operating risk of well logging construction；Furthermore, the hydraulic sidewall contact device structure of the present invention is more
Simply, hydraulically powered stability is higher, improves backup reliability, reduces fault rate.
Alternatively, also including the energy-storaging spring for being fixedly set in the cavity of resorption, the energy-storaging spring
Upper end and the piston be connected, to stretch the energy-storaging spring when moving on the piston；Place
When backup working position, the energy-storaging spring pulls the pull bar to move down.
Alternatively, also including closure the epicoele upper end dummy piston, the outer shell barrel with
The dummy piston surrounds counter balance pocket, the upper end of the dummy piston by balancing spring with it is described
Outer shell barrel is connected, and the counter balance pocket is with the port with ft connection.
Alternatively, also including sub-arm and linking arm, the two ends of the sub-arm respectively with it is described
Pull bar and probe are hinged, and the two ends of the linking arm are hinged with the outer shell barrel and probe respectively；
When the pull bar is moved up and down, drive respectively the linking arm around which being hinged with the outer shell barrel
End, the sub-arm are swung around its hinged end with the pull bar, with the probe that stretches out or bounce back.
Alternatively, also including hole diameter arm, one end and the pull bar of the hole diameter arm are hinged, with
Toilet is stated and drives the hole diameter arm to swing around its hinged end when pull bar is moved up and down so that the well
The other end of footpath arm is affixed to or away from the borehole wall.
Alternatively, also including linear position sensors, the hole diameter arm can become with borehole diameter
Change corresponding swing and be close to the borehole wall all the time, and promote the piston to move up and down by the pull bar；
The linear position sensors with the contact head abutted with the piston, to record borehole diameter.
Alternatively, it is also including safety valve, when the oil pressure of the cavity of resorption exceedes predetermined value, described
Safety valve is opened to connect the epicoele and the cavity of resorption.
Alternatively, the hydraulic pump is connected with motor, the input shaft of the hydraulic pump and the electricity
The output shaft of machine is same axle.
The present invention also provides a kind of logging instrument, including probe is affixed to the borehole wall described in probe and backup
Telescoping ram, the telescoping ram are the hydraulic sidewall contact device described in any of the above-described.
As the logging instrument of the present invention includes the hydraulic sidewall contact device described in any of the above-described, thus it is above-mentioned
Technique effect produced by any one hydraulic sidewall contact device is applied to the logging instrument of the present invention, herein
Repeat no more.
Description of the drawings
Fig. 1 is a kind of structural representation of set-up mode of logging instrument in prior art；
Fig. 2 is a kind of structural representation of set-up mode of mechanical telescoping ram in prior art；
Fig. 3 is a kind of section knot of the hydraulic sidewall contact device provided by the present invention in specific embodiment
Structure schematic diagram；
Fig. 4 is the operation principle schematic diagram of balance cavity segment in hydraulic sidewall contact device shown in Fig. 3；
Fig. 5 illustrates for the operation principle of hydraulic sidewall contact device cathetus position sensor shown in Fig. 3
Figure；
Fig. 6 is that hydraulic sidewall contact device shown in Fig. 3 is in view when bouncing back working position；
Fig. 7 is in view during backup working position for hydraulic sidewall contact device shown in Fig. 3.
In Fig. 1-2：
Electronic circuit 100, telescoping ram 200, outer shell barrel 210, motor 220, leading screw 230,
Spring assembly 240, guide post 250, linking arm 260, hole diameter arm 270, probe 300, company
Access slot type main body 400；
In Fig. 3-7：
Pull bar 1, outer shell barrel 2, epicoele 21, cavity of resorption 22, counter balance pocket 23, port 24, master
Spring 3, hydraulic pump 4, piston 5, probe 6, energy-storaging spring 7, dummy piston 8, equilibrium bomb
Spring 9, sub-arm 10, linking arm 11, hole diameter arm 12, linear position sensors 13, contact
131, safety valve 14.
Specific embodiment
The core of the present invention can be carried for probe to provide a kind of logging instrument and its hydraulic sidewall contact device
For enough backup power, shorten the entire length of logging instrument, so as to the operating risk for reducing constructing.
In order that those skilled in the art more fully understands technical scheme, tie below
The present invention is described in further detail to close the drawings and specific embodiments.
The invention provides a kind of logging instrument, including the probe and backup probe patch for being detected
To the telescoping ram of the borehole wall, the telescoping ram is hydraulic sidewall contact device, to improve the reliability of backup,
And enough backup power can be provided.Below in conjunction with accompanying drawing, the hydraulic sidewall contact device of the present invention is entered
Row is described in detail.
Fig. 3 is refer to, the hydraulic sidewall contact device of the present invention includes outer shell barrel 2, pull bar 1, main spring
3 and hydraulic pump 4.The upper and lower ends of outer shell barrel 2 can be blocked by seal plug is first-class, with
Just the middle cavity of sealing is formed in the middle of which；Outer shell barrel 2 from top to bottom can extend, so as to its
He connects and stretches in well and logged well well logging apparatus；Can set in the middle cavity of outer shell barrel 2
Piston 5 is put, so as to the middle cavity is separated to form epicoele 21 and cavity of resorption 22,21 He of epicoele
Cavity of resorption 22 be two seal isolation cavitys, outer shell barrel 2 now equivalent to a hydraulic cylinder,
Hydraulic oil is filled with epicoele 21 and cavity of resorption 22.The upper end of the pull bar 1 is fixedly connected on
The lower surface of piston 5, that is to say, that pull bar 1 is equivalent to 5 bar of piston, 1 set of whole pull bar
It is mounted in cavity of resorption 22, and from top to bottom extends；Cavity of resorption 22 can be stretched out in the lower end of pull bar 1,
And 6 be connected with probe, when pull bar 1 is moved down, can drive pop one's head in 6 it is protruding and
Recline the borehole wall, when pull bar 1 is moved down, can drive probe 6 inwardly retraction and away from well
Wall, can specifically cause the connection flute profile master of 6 retraction of the probe outer shell barrel 2 or logging instrument
In vivo.3 fixed cover of main spring is loaded on epicoele 21, specifically can fix the upper end of main spring 3
Connection and the inwall of epicoele 21, or the connectors such as fixed block are set in epicoele 21, then
The upper end of main spring 3 is fixedly connected on the connectors such as fixed block；The lower end energy of main spring 3
It can be free end to be enough connected to piston 5, the i.e. lower end of main spring 3, when moving on piston 5,
The upper surface of piston 5 can be abutted with the lower end of main spring 3, to compress main spring 3；Or,
The lower end of main spring 3 can be fixedly connected with the upper surface of piston 5, when moving on piston 5
Main spring 3 can be compressed.The import of hydraulic pump 4 is connected with epicoele 21, is exported and cavity of resorption 22
Connection, i.e., hydraulic pump 4 can pressurize to the low pressure oil in epicoele 21, shape of then pressurizeing
Into hydraulic oil be delivered to cavity of resorption 22.
Specifically, hydraulic sidewall contact device of the invention has retraction working position and backup working position.When
In retraction working position when, hydraulic pump 4 works, so as to by epicoele 21 low pressure oil pressurization after
Cavity of resorption 22 is delivered to, then the hydraulic oil in cavity of resorption 22 promotes piston 5 to move up, living
Plug 5 drives connected pull bar 1 to move up while moving up；Due to pull bar 1
Lower end is connected with probe 6, when moving on pull bar 1, probe 6 just can be driven inwardly to bounce back, made
6 must be popped one's head in away from the borehole wall.Meanwhile, the main bullet in epicoele 21 can be compressed when moving on piston 5
Spring 3 so that main spring 3 produces compression.When in backup working position, hydraulic pump 4
Do not work, and epicoele 21 be connected with cavity of resorption 22, now, piston 5 be subject to main spring 3 to
Under thrust and the hydraulic oil in epicoele 21 to its downward pressure, and the liquid of cavity of resorption 22
Force feed upwards pressure to which；As, in the presence of pressure reduction, the hydraulic oil in cavity of resorption 22 will
Flow to epicoele 21 so that the pressure reduction in two chambers reduces rapidly, then what piston 5 was subject to makes a concerted effort to be downward
, therefore piston 5 can be moved down, and then drive connected pull bar 1 to move down so that visit
6 protruding and be affixed to the borehole wall.
It is as herein described it is inside and outside with logging instrument as reference, the bearing of trend with logging instrument as axial direction,
In the axial direction, under being, it is upper away from the direction of the earth's crust near the direction of the earth's crust；In axial direction
In the direction of heart line is, it is outer away from the direction of longitudinal center line, when probe 6 is away from axial direction
It is protruding during center line, to be affixed to the borehole wall, when popping one's head in 6 near longitudinal center line
Inwardly bounce back, to be retracted to logging instrument, be easy to move up and down to terminate or continue to survey with logging instrument
Well.
The cavity of outer shell barrel 2 is divided into epicoele 21 and cavity of resorption 22 by the hydraulic sidewall contact device of the present invention,
To form hydraulic cylinder, then driven by hydraulic coupling and move on piston 5, so that moving on pull bar 1
And drive probe 6 inwardly to bounce back；In retraction process, piston 5 can compress the main bullet of epicoele 21
Spring 3, when not working so as to hydraulic pump 4, the elastic force of main spring 3 can pushing drawing rod 1 move down,
To drive probe 6 protruding.It can be seen that, the hydraulic sidewall contact device structure of the present invention is relatively simple,
So that maintenance and replacing accessory are more simple.What is more important, can be by hydraulic oil
The mode of pressurization provides driving force, that is to say, that using corresponding dynamical element during hydraulic-driven
Larger volume need not be taken, in the case where the cross-sectional area of logging instrument is certain, to the greatest extent can may be used
The length shortened shared by dynamical element of energy；Meanwhile, as long as the length of pull bar 1 disclosure satisfy that
Probe 6 stretches out and retraction demand, then the present invention can largely shorten hydraulic pressure
The length of telescoping ram so that the structure of hydraulic sidewall contact device is more compact, and then shorten whole well logging
The length of instrument.Really as stated in the Background Art, as working environment at coal mines is complex, work as well logging
During the contraction in length of instrument, the operating risk constructed of logging well can be largely reduced, be reduced
Accident rate.Furthermore, due to directly driving piston 5 using hydraulic coupling, and pull bar 1 is connected to work
5 bar of piston is formed on plug 5, then hydraulic coupling can be transferred directly to pull bar 1, reduce power
Transmission link, so as to reduce loss of the power in transmittance process；And, hydraulic-driven phase
It is more sufficient to mechanically operated power so that the hydraulic sidewall contact device of the application can be probe 6
There is provided enough radial direction backup power, it is ensured that backup reliability, reduce the shadow to well logging such as mud cake
Ring.
Further, as shown in figure 3, the hydraulic sidewall contact device of the present invention can also include energy-storaging spring
7, energy-storaging spring 7 can be loaded on cavity of resorption 22 with fixed cover, specifically can be fixedly connected on its lower end
On the inwall of cavity of resorption 22, or the connectors such as fixed block are set, so on the inwall of cavity of resorption 22
Afterwards the lower end of energy-storaging spring 7 is fixed on the connectors such as fixed block；The upper end of energy-storaging spring 7
It is fixedly connected with the lower surface of piston 5, then in retraction working position, can draws when moving on piston 5
Stretch energy-storaging spring 7 so that energy-storaging spring 7 produces tensile deformation.
When in backup working position, piston 5 is subject to downward thrust F of main spring 3It is main, and
As the oil pressure of epicoele 21 is less than the oil pressure of cavity of resorption 22, then hydraulic oil is produced upwards to piston 5
Thrust FLiquid, now, piston 5 is subject to the downward F that makes a concerted effortClose=FIt is main-FLiquid；Due to piston 5
The process for moving downward recovers the process of deformation, the then mistake that piston 5 is moved downward for main spring 3
In journey, the deformation quantity of main spring 3 reduces therewith, and as epicoele 21 is connected with cavity of resorption 22,
Therefore cavity of resorption 22 is also gradually reduced with the pressure reduction of epicoele 21, that is to say, that, although piston 5 is all the time
Made a concerted effort by downward, but make a concerted effort to be gradually reduced as piston 5 is moved down so that backup is visited
6 backup power stretched out accordingly reduce.Just to above-mentioned technical problem, exist in the present embodiment
22 fixed cover of cavity of resorption is equipped with energy-storaging spring 7, as noted previously, as energy-storaging spring 7 is in piston 5
There is tensile deformation during upper shifting, then, before the reset of piston 5, energy-storaging spring 7 has stretching all the time
Deformation, and then downward pulling force F storages are produced to piston 5, that is to say, that now piston 5 is received
The F that makes a concerted effort for arrivingClose=FStore+FIt is main-FLiquid, now piston 5 be subject to two downward active forces, living
Before plug 5 does not reset, FStoreAnd FIt is mainAll the time exist, and then ensure enough backup power, backup is visited
6 are affixed to the borehole wall all the time, meet borehole diameter it is larger in the case of backup demand.
It is appreciated that the connection between epicoele 21 and cavity of resorption 22 can be by the switch such as magnetic valve
Valve is controlled, and for example, can arrange magnetic valve, when magnetic valve is opened just on piston 5
Epicoele 21 and cavity of resorption 22 can be connected so that the fluid of high-voltage oil cavity flows to low pressure oil pocket；When
During closed electromagnetic valve, epicoele 21 and cavity of resorption 22 are sealed off.
Further, incorporated by reference to Fig. 4, the hydraulic sidewall contact device of the present invention can also include that balance is lived
Plug 8, dummy piston 8 can be blocked in the upper end of epicoele 21, due to the upper end seal of outer shell barrel 2
Stifled, then dummy piston 8 can enclose to form upper cavity in upper end with outer shell barrel 2, the top
Top of the cavity in epicoele 21, referred to as counter balance pocket 23；That is, outer shell barrel 2 by
There are on direction under up to three chambers for sealing against each other, counter balance pocket 23, epicoele 21 is followed successively by
With cavity of resorption 22, sealed by dummy piston 8 between counter balance pocket 23 and epicoele 21, epicoele
Sealed by piston 5 between 21 and cavity of resorption 22.In detail, also fix in counter balance pocket 23
Balancing spring 9 is set with, the upper end of balancing spring 9 is fixedly connected in outer shell barrel 2, lower end
It is fixedly connected with the dummy piston 8, and in outer shell barrel 2, offers port 24, to balance
Chamber 23 can pass through the port 24 and ft connection.
As shown in figure 4, when logging instrument works in Oil/gas Well, with the increase of well depth, liquid
The temperature of force feed is raised so that hydraulic oil expands, and then causes the pressure increase in epicoele 21,
So as to (i.e. left side in Fig. 4) promotes dummy piston 8 upwards, so as to compress balancing spring 9,
Balanced because hydraulic oil expands and in the generation of 8 upper and lower ends of dummy piston with will pass through balancing spring 9
Pressure reduction.Meanwhile, with the increase of Oil/gas Well well depth, the pressure of environmental liquids can be lived to balance
Plug 8 produces downward pressure, puts down to upward pressure to dummy piston 8 with hydraulic oil
Weighing apparatus, finally with 9 collective effect of balancing spring, so that the internal and external pressure balance of outer shell barrel 2,
Avoid damaging outer shell barrel 2 because inside and outside differential pressure is excessive.Arrow shown in Fig. 4 represents hydraulic pressure respectively
Oil and outside liquid act on the pressure of dummy piston 8.
In said structure, counter balance pocket 23, epicoele 21 and cavity of resorption 22 share an outer shell barrel 2,
That is, the hydraulic cylinder that be made up of epicoele 21 and cavity of resorption 22 can be carried out with counter balance pocket 23
Integrated design, to shorten the length of whole hydraulic sidewall contact device while reliability is greatly improved
Degree so that hydraulic sidewall contact device is more compact.To improve sealing reliability, can be in dummy piston
8 and piston 5 outer ring arrange sealing ring, such as shown in Fig. 4, dummy piston outer ring is O-shaped
Sealing ring；In view of the demand of display, other views in Fig. 3-7 do not show sealing ring,
The detailed construction of palette is not given yet, but, those skilled in the art should manage
Solution, is to realize goal of the invention, and dummy piston 8 and piston 5 are that by seal isolation
's.
On the basis of the above, hydraulic sidewall contact device of the invention can also include sub-arm 10 and connect
Connect arm 11, as shown in figure 3, the two ends of sub-arm 10 can respectively with pull bar 1 and probe 6
It is hinged, the two ends of linking arm 11 can be hinged with outer shell barrel 2 and probe 6 respectively.Wherein, it is auxiliary
Help the upper end of arm 10 be hinged the lower end with pull bar 1, sub-arm 10 is with its lower end and probe
6 are hinged, and the upper end of linking arm 11 can be articulated with the lower end of outer shell barrel 2, linking arm 11
Lower end can be hinged with probe 6；Sub-arm 10 can be respectively hinged at probe with linking arm 11
6 above-below direction, as outer shell barrel 2 can be stretched out in the lower end of pull bar 1, therefore linking arm 11
Pin joint may be at the top of 10 pin joint of sub-arm, as shown in Figure 3.
Specifically, pull bar 1, sub-arm 10, linking arm 11 and probe 6 can form four companies
Linkage, when being logged well, the position of outer shell barrel 2 is fixed, therefore linking arm 11 and outer shell barrel 2
Pin joint be relatively fixed；That is, in the quadric chain, there are three length and fix
Bar and adjustable length bar, a fixed hinge, i.e. sub-arm 10, linking arm 11
Fix with the length of probe 6, the length of pull bar 1 is variable, and the upper hinge of linking arm 11 is fixed.
So, when pull bar 1 is moved up so that one of bar of quadric chain shortens, and makes
Linking arm 11 is obtained around hinge thereon along orientation clockwise oscillation shown in Fig. 3, and then drives sub-arm
10 clockwise oscillations, so as to 6 inside retractions of popping one's head in；When pull bar 1 is moved down so that four
One of bar in linkage is elongated, to promote linking arm 11 around hinge thereon along Fig. 3
Shown orientation carries out counter-clockwise swing, while 10 counter-clockwise swing of sub-arm is driven, to connect
Arm 11 and sub-arm 10 push out probe 6 jointly so that probe 6 stretches out and the borehole wall that reclines.
It is appreciated that described herein be described with orientation shown in Fig. 3 clockwise and anticlockwise,
It is convenient only for expression, should not be construed as any limit swung to linking arm 11 and sub-arm 10
System.
It can be seen that, by the setting of above-mentioned sub-arm 10 and linking arm 11 so that pull bar 1 it is upper
Lower movement can drive probe 6 to realize retraction and backup, and the transform linear motion by pull bar 1 is
The swing of probe 6, improves the convenience of driving.Simultaneously as being driven using quadric chain
Dynamic probe 6 carries out action, can realize the easy motion of probe 6, and then improve probe 6
Retraction and the reliability of backup, it is to avoid probe 6 is damaged；Sub-arm 10 and linking arm 11 can be with
It is mutually coordinated, retraction and the backup of probe 6 are realized jointly, to improve the positioning precision of probe 6.
Certainly, those skilled in the art can adopt other driving structures to realize the retraction of probe 6 completely
With backup, for example, the lower end of pull bar 1 can be using the structure of similar background section (i.e.
Structure shown in Fig. 2) be configured, i.e., using two joint arms being hinged, it is not limited to above-mentioned auxiliary
The form of arm 10 and linking arm 11 is helped, prior art is specifically referred to, here is omitted.
It is also possible to including hole diameter arm 12, hole diameter arm 12 can also be articulated with drawing
The lower end of bar 1, specifically can share a jointed shaft, i.e. 12 He of hole diameter arm with sub-arm 10
The upper end of sub-arm 10 is articulated with the lower end of pull bar 1, and both jointed shafts are same axle；
Or, hole diameter arm 12 can not also adopt same jointed shaft with sub-arm 10, as long as hole diameter arm
12 substantially can be extended in borehole diameter direction with the jointed shaft of pull bar 1, so as to hole diameter arm
12 hinged ends around which with pull bar 1 can be affixed to or away from the borehole wall when swinging.Furthermore, work as drawing
When bar 1 is moved up and down, hole diameter arm 12 can be driven to swing around its jointed shaft with pull bar 1, with
Just (usual hole diameter arm 12 is hinged with pull bar 1 other end of hole diameter arm 12 with upper end, and which is another
End is lower end) can be affixed to or away from the borehole wall.It will be understood by those skilled in the art that
Can realize that pull bar 1 moves up and down the swing of hole diameter arm 12 using various structures, for example, can be with
Using the mechanism of similar double leval jib mentioned above, or the mutual hinge shown in background section
The structure of two joint arms for connecing；In view of hole diameter arm 12 belongs to a part for logging instrument, due to logging instrument
Comprising part it is more, the structure of each part is complex, only its hydraulic sidewall contact device is entered herein
Row explanation, part please not belong to reference to prior art, the motion of the hole diameter arm 12 to the greatest extent for other
In a part of the prior art, it is not described in detail herein.
Please further refer to Fig. 5, the present invention can also include linear position sensors 13, straight line
Position sensor 13 can be fixedly mounted in outer shell barrel 2, can specifically be fixedly installed on hydraulic pressure
On pump 4, or in the other structures of the fixation of opposite shell cylinder 2；Linear position sensors 13
With the contact head 131 abutted with piston 5.In well logging, hole diameter arm 12 can be all the time
Recline the borehole wall, and in other words, with the change of Oil/gas Well borehole diameter, hole diameter arm 12 can make phase
Should change, so that the change with borehole diameter accordingly swings, it is ensured that recline the borehole wall.Such as institute above
State, hole diameter arm 12 is connected with pull bar 1, then, when hole diameter arm 12 is corresponding to be swung, counter can make
Move up and down for pull bar 1, and then pushing drawing rod 1, moving up and down for pull bar 1 is transmitted then
To piston 5 so that piston 5 is moved up and down.Due to the contact head 131 of linear position sensors 13
Abut with piston 5, (the shifting of the left and right directions i.e. shown in Fig. 5 when piston 5 is moved up and down
It is dynamic), the contact head 131 of linear position sensors 13 is also moved up and down therewith；Again due to straight line
The other end opposite shell cylinder 2 relative with contact head 131 of position sensor 13 is fixed, and is being surveyed
During well, the position of outer shell barrel 2 is changeless, then, linear position sensors 13
Just it is capable of the change of accurate recording borehole diameter.Arrow in Fig. 5 represent respectively hole diameter arm 12,
The direction of motion of pull bar 1 and piston 5.
In detail, main spring 3 has carried out certain precommpression in assembling, therefore, main spring
3 can give 1 one backup power of pull bar all the time so that probe 6 reclines the borehole wall.When borehole diameter becomes
When big, hole diameter arm 12 can be expanded outwardly, and then piston 5 is moved down, and be discharged with part
Main spring 3 so that the backup power of 3 pairs of probes 6 of main spring reduces；But, due to main spring 3
Compressive state is unanimously in, therefore remains the backup to probe 6, to ensure the reliability of backup
Property.
It is as follows with regard to the change in location process of hole diameter arm 12：Probe 6 is moved up and down in well
When, borehole diameter is continually changing.When well of the probe 6 from the well of major diameter to minor diameter
When eye is mobile, borehole diameter diminishes, and forces hole diameter arm 12 to contract；Now, linear position
Sensor 13 receives amount of the hole diameter arm 12 to contract, is translated into the change of borehole diameter
Amount.In the same manner, when popping one's head in 6 from the well of minor diameter to the well movement of major diameter, well is straight
Footpath becomes big, and under the promotion of main spring 3, hole diameter arm 12 is expanded outwardly；Now, linear position
Sensor 13 receives the amount that hole diameter arm 12 is expanded outwardly, and is converted into the variable quantity of borehole diameter.
The hydraulic pump 4 of the present invention be able to can connect for the machine integrated structure of pump, i.e. hydraulic pump 4
Motor is cased with, motor is used to drive hydraulic pump 4, and the output shaft of motor can be simultaneously as liquid
The output shaft of the input shaft of press pump 4, i.e. motor is same axle with the input shaft of hydraulic pump 4, electric
The structures such as shaft coupling need not be set between machine and hydraulic pump 4.Using the machine integrated structure of pump, one
Aspect can simplify structure, on the other hand can also improve maintenance convenience and structural stability.
It can be seen that, the present invention is internal to adopt modularized design, and for example, pump is machine integrated, main spring
3 systems, 7 system of 8 system of dummy piston and energy-storaging spring, this modular design are caused
Maintenance and replacing part become simpler.
Furthermore, the present invention can also include safety valve 14, in retraction process, epicoele 21 with
22 opposing seal of cavity of resorption, and hydraulic pump 4 is to 22 conveying high-pressure of cavity of resorption oil so that cavity of resorption 22
Oil pressure constantly raise, with promote on piston 5 move；Now, when the oil pressure of cavity of resorption 22 exceedes in advance
During definite value, safety valve 14 can be caused to automatically turn on, to connect epicoele 21 and cavity of resorption 22, shape
Into epicoele 21 and the interface channel of cavity of resorption 22, it is to avoid the oil pressure of cavity of resorption 22 continues to rise and affect
Processing safety.Generally, the MTP of cavity of resorption 22 is not higher than 10Mpa, when oil pressure exceedes
During the numerical value, safety valve 14 is automatically turned on so that hydraulic oil is in the presence of high pressure from cavity of resorption
22 flow to epicoele 21, i.e., from high pressure oil area to low pressure oil area flow so that cavity of resorption 22 or
Within saying that the pressure of high pressure oil area remains at 10Mpa.
Below in conjunction with accompanying drawing 6 and Fig. 7, the course of work of the hydraulic sidewall contact device of the present invention is carried out
Describe in detail.
As shown in fig. 6, after well logging is completed, hydraulic sidewall contact device switches to retraction working position, liquid
Press pump 4 pressurizes to the low pressure oil in epicoele 21, is then delivered to the hydraulic oil after pressurization
Cavity of resorption 22 so that the oil pressure of cavity of resorption 22 is raised, and under differential pressure action, piston 5 is moved up,
To drive pull bar 1 to move up；When moving on pull bar 1, linking arm 11 and sub-arm are driven
10 inwardly swing, with the probe 6 that bounces back；Meanwhile, also being hinged with pull bar 1 around which of hole diameter arm 12
End inwardly swings, with shrinkage value outer shell barrel 2.
As shown in fig. 7, when being logged well, logging instrument is stretched in Oil/gas Well well, now hydraulic pressure
Telescoping ram switches to backup working position, pushes probe 6 to the borehole wall.In detail, epicoele 21 is with
It is connected between chamber 22, the high-pressure oil flow in cavity of resorption 22 is to epicoele 21, and the main bullet for being compressed
Spring 3 now starts release, and the energy-storaging spring 7 being stretched also begins to recover deformation, and then to work
5 generation of plug is downward to make a concerted effort, and in the presence of this is made a concerted effort, piston 5 is moved downward, and is driven and is drawn
Bar 1 is moved down；As in quadric chain a connecting rod pull bar 1 move when, drive linking arm
11 and sub-arm 10 swing out, the borehole wall 6 is affixed to backup probe；Meanwhile, pull bar 1
Move down drive hole diameter arm 12 to swing out, so that the lower end of hole diameter arm 12 reclines the borehole wall, finally
Form the operating position shown in Fig. 7.
Wherein, the arrow in Fig. 6 and Fig. 7 represents the direction of motion of each part；In order to describe,
The well of Oil/gas Well is represented with middle blank parts, the filler in well both sides represents ground
Layer.
Above a kind of logging instrument provided by the present invention and its hydraulic sidewall contact device have been carried out in detail
Introduce.Specific case used herein is set forth to the principle and embodiment of the present invention,
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.Should
When pointing out, for those skilled in the art, without departing from the principle of the invention
On the premise of, some improvement and modification can also be carried out to the present invention, these improve and modify
Fall in the protection domain of the claims in the present invention.
Claims (9)
1. a kind of hydraulic sidewall contact device of logging instrument, including pull bar (1) and the shell of two ends sealing
Cylinder (2), it is characterised in that also including main spring (3) and hydraulic pump (4), the outer shell barrel
(2) epicoele (21) and cavity of resorption (22), the main spring (3) are formed by piston (5) isolation
Fixed cover is loaded on the epicoele (21), and the upper end of the pull bar (1) is fixed on the piston (5),
Stretch out the cavity of resorption (22) to connect probe in lower end；In retraction working position when, the hydraulic pressure
The import of pump (4) is connected with the epicoele (21), and outlet is connected with the cavity of resorption (22),
Move on the piston (5) with being promoted, and then compress the main spring (3), and drive the drawing
Move on bar (1) and the probe (6) that bounces back；In backup working position when, the epicoele (21) and
Cavity of resorption (22) connection, so that the main spring (3) promotes the piston (5) to move down,
And then drive the pull bar (1) to move down and stretch out probe (6).
2. hydraulic sidewall contact device as claimed in claim 1, it is characterised in that also including fixation
Be sleeved on the energy-storaging spring (7) of the cavity of resorption (22), the upper end of the energy-storaging spring (7) with
The piston (5) is connected, to stretch the energy-storaging spring (7) when moving on the piston (5)；
In backup working position when, the energy-storaging spring (7) pulls the pull bar (1) to move down.
3. hydraulic sidewall contact device as claimed in claim 1, it is characterised in that also including closure
In the dummy piston (8) of the epicoele (21) upper end, the outer shell barrel (2) and the balance
Piston (8) surrounds counter balance pocket (23), and the upper end of the dummy piston (8) passes through balancing spring
(9) with the outer shell barrel (2) be connected, the counter balance pocket (23) with ft connection
Port (24).
4. the hydraulic sidewall contact device as described in any one of claim 1-3, it is characterised in that also wrap
Include sub-arm (10) and linking arm (11), the two ends of the sub-arm (10) respectively with it is described
Pull bar (1) and probe (6) are hinged, and the two ends of the linking arm (11) are outer with described respectively
Thimble (2) and probe (6) are hinged；When the pull bar (1) moves up and down, institute is driven respectively
Linking arm (11) is stated around its hinged end, sub-arm (10) with the outer shell barrel (2)
Swing around its hinged end with the pull bar (1), with the probe (6) that stretches out or bounce back.
5. hydraulic sidewall contact device as claimed in claim 4, it is characterised in that also including hole diameter
Arm (12), one end and the pull bar (1) of the hole diameter arm (12) are hinged, so as to described
Pull bar (1) drives the hole diameter arm (12) to swing around its hinged end when moving up and down so that institute
The other end for stating hole diameter arm (12) is affixed to or away from the borehole wall.
6. hydraulic sidewall contact device as claimed in claim 5, it is characterised in that also including straight line
Position sensor (13), the hole diameter arm (12) can be with corresponding swings of borehole diameter change
All the time it is close to the borehole wall, and promotes the piston (5) to move up and down by the pull bar (1)；
The linear position sensors (13) with the contact head (131) abutted with the piston (5),
To record borehole diameter.
7. hydraulic sidewall contact device as claimed in claim 4, it is characterised in that also including safety
Valve (14), when the oil pressure of the cavity of resorption (22) exceedes predetermined value, the safety valve (14)
Open to connect the epicoele (21) and the cavity of resorption (22).
8. hydraulic sidewall contact device as claimed in claim 4, it is characterised in that the hydraulic pump
(4) motor is connected with, the input shaft of hydraulic pump (4) and the output shaft of the motor are
Same axle.
9. a kind of logging instrument, including pop one's head in described in probe (6) and backup (6) be affixed to the borehole wall
Telescoping ram, it is characterised in that the telescoping ram be any one of the claims 1-8 described in
Hydraulic sidewall contact device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608543.6A CN106555585A (en) | 2015-09-22 | 2015-09-22 | A kind of logging instrument and its hydraulic sidewall contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608543.6A CN106555585A (en) | 2015-09-22 | 2015-09-22 | A kind of logging instrument and its hydraulic sidewall contact device |
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|---|---|
| CN106555585A true CN106555585A (en) | 2017-04-05 |
Family
ID=58415160
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510608543.6A Pending CN106555585A (en) | 2015-09-22 | 2015-09-22 | A kind of logging instrument and its hydraulic sidewall contact device |
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| CN108150150A (en) * | 2017-12-21 | 2018-06-12 | 中国电子科技集团公司第二十二研究所 | Logging instrument |
| CN108533252A (en) * | 2018-06-07 | 2018-09-14 | 北京捷威思特科技有限公司 | Bidirectional electric eccentric |
| CN110374582A (en) * | 2019-06-04 | 2019-10-25 | 中国海洋石油集团有限公司 | A kind of hydraulic sidewall contact device and logging instrument |
| CN110965993A (en) * | 2019-11-19 | 2020-04-07 | 中国石油天然气集团有限公司 | Push-leaning type three-arm temperature logging instrument |
| CN111198058A (en) * | 2018-11-19 | 2020-05-26 | 中国石油化工股份有限公司 | Pushing force testing device |
| CN112878993A (en) * | 2021-01-14 | 2021-06-01 | 中国石油天然气集团有限公司 | Plate spring type six-arm transfer caliper |
| CN113653453A (en) * | 2021-08-18 | 2021-11-16 | 中石化石油工程技术服务有限公司 | Downhole reducing environment self-adaptive adjusting device of tractor and control method thereof |
| CN113775328A (en) * | 2020-06-09 | 2021-12-10 | 中石化石油工程技术服务有限公司 | Production profile logging instrument and pushing power connector thereof |
| CN113833457A (en) * | 2021-09-26 | 2021-12-24 | 西南石油大学 | Actuating mechanism of formation pressure measuring instrument while drilling |
| WO2022213509A1 (en) * | 2021-04-07 | 2022-10-13 | 华南理工大学 | Combined-wheel-type movable ultrasonic structure detection device and detection method |
| CN115977616A (en) * | 2023-02-13 | 2023-04-18 | 中国地质调查局南京地质调查中心(华东地质科技创新中心) | Well probe wall-adhering device for testing formation thermophysical parameters |
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| CN110374582A (en) * | 2019-06-04 | 2019-10-25 | 中国海洋石油集团有限公司 | A kind of hydraulic sidewall contact device and logging instrument |
| CN110965993B (en) * | 2019-11-19 | 2023-01-10 | 中国石油天然气集团有限公司 | Push-leaning type three-arm temperature logging instrument |
| CN110965993A (en) * | 2019-11-19 | 2020-04-07 | 中国石油天然气集团有限公司 | Push-leaning type three-arm temperature logging instrument |
| CN113775328A (en) * | 2020-06-09 | 2021-12-10 | 中石化石油工程技术服务有限公司 | Production profile logging instrument and pushing power connector thereof |
| CN112878993A (en) * | 2021-01-14 | 2021-06-01 | 中国石油天然气集团有限公司 | Plate spring type six-arm transfer caliper |
| WO2022213509A1 (en) * | 2021-04-07 | 2022-10-13 | 华南理工大学 | Combined-wheel-type movable ultrasonic structure detection device and detection method |
| CN113653453A (en) * | 2021-08-18 | 2021-11-16 | 中石化石油工程技术服务有限公司 | Downhole reducing environment self-adaptive adjusting device of tractor and control method thereof |
| CN113833457A (en) * | 2021-09-26 | 2021-12-24 | 西南石油大学 | Actuating mechanism of formation pressure measuring instrument while drilling |
| CN113833457B (en) * | 2021-09-26 | 2023-05-16 | 西南石油大学 | Executing mechanism of formation pressure measuring instrument while drilling |
| CN115977616A (en) * | 2023-02-13 | 2023-04-18 | 中国地质调查局南京地质调查中心(华东地质科技创新中心) | Well probe wall-adhering device for testing formation thermophysical parameters |
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