CN205025461U - Logging instrument and hydraulic pressure telescoping ram thereof - Google Patents
Logging instrument and hydraulic pressure telescoping ram thereof Download PDFInfo
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- CN205025461U CN205025461U CN201520739662.0U CN201520739662U CN205025461U CN 205025461 U CN205025461 U CN 205025461U CN 201520739662 U CN201520739662 U CN 201520739662U CN 205025461 U CN205025461 U CN 205025461U
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Abstract
The utility model discloses a logging instrument and hydraulic pressure telescoping ram thereof can push away by power for the probe provides sufficient, shortens the whole length of logging instrument to reduce the operating risk of construction. The hydraulic pressure telescoping ram includes pull rod, sealed outer thimble, main spring and the hydraulic pump in both ends, outer thimble passes through isolated epicoele and the cavity of resorption of forming of piston, the fixed suit of main spring in the epicoele, the upper end of pull rod link firmly in the piston, the lower extreme stretches out the cavity of resorption is in order to connect the probe, when being in go back to the work of contracting position, the import of hydraulic pump with superior connectivity, the export with the cavity of resorption intercommunication is in order to promote the piston shifts up, and then the compression the main spring, and drive the pull rod shifts up and returns the probe that contracts, be in when pushing away by the work position, the epicoele with the cavity of resorption intercommunication, so that the main spring promotes the piston moves down, and then drives the pull rod moves down and stretches out the probe. The utility model discloses can push away by power for the probe provides sufficient, length is short, simple structure.
Description
Technical field
The utility model relates to well logging field of mechanical technique, particularly relates to a kind of logging instrument and hydraulic sidewall contact device thereof.
Background technology
Logging instrument has been the instrument of logging operation, is divided into ground instrument and downhole instrument.Well logging is the physical characteristic in order to find out formation rock in drilling well, divides a kind of engineer operation of geological section, usually has electrical log, radioactive logging, acoustic logging, imaging logging and engineering log (as hole diameter, hole deviation) etc.
In prior art, some logging instrument, as compensation density logger, litho-density tool, microsphere logging instrument and small-scale resistance spot welding instrument etc., need probe 300 backup to the borehole wall, therefore, need power source to provide power, for backup or retraction probe 300.Described power source is telescoping ram 200.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of set-up mode of logging instrument in prior art.
As shown in Figure 1, logging instrument generally includes electronic circuit 100, telescoping ram 200, probe 300 and connects grooved main body 400.Wherein, telescoping ram 200 is core components of logging instrument, provides power in down-hole, promotes probe 300 and to recline the borehole wall, 300 to detect to pop one's head in; After well logging completes, probe 300 bounces back in the connection grooved main body 400 of logging instrument by telescoping ram 200.Telescoping ram 200 can be divided into mechanical type telescoping ram and fluid pressure type telescoping ram, mainly comprises outer shell barrel, motor, spring assembly, guide peg, linking arm and hole diameter arm.
Please further refer to the structural representation that Fig. 2, Fig. 2 are a kind of set-up mode of mechanical type telescoping ram in prior art.
Mechanical type telescoping ram shown in Fig. 2 mainly comprises outer shell barrel 210, motor 220, leading screw 230, spring assembly 240, guide peg 250, linking arm 260 and hole diameter arm 270.Existing mechanical type telescoping ram drives leading screw 230 to rotate by motor 220, makes leading screw 230 transverse shifting, and then applies horizontal pulling force or pressure to spring assembly 240; Now, the elasticity that spring assembly 240 produces can act on guide peg 250, thus laterally outwards promotes or transversely inwardly pull guide peg 250.Outer end due to guide peg 250 is connected with hole diameter arm 270 and linking arm 260, will promote hole diameter arm 270 and linking arm 260 and launch to both sides in the process of moving outside guide peg 250, and then drives the probe 300 on linking arm 260 to recline the borehole wall; In the process that guide peg 250 transversely moves inward, drive hole diameter arm 270 and linking arm 260 inwardly to regain, and then the probe 300 on drive linking arm 260 is away from the borehole wall.
Adopt said mechanism, form driving-chain by motor 220, leading screw 230, spring assembly 240, guide peg 250 and linking arm 260, transmission link is more, and mechanical drive is limited, cause backup power too small, make backup probe 300 be affixed to being short of power of the borehole wall, affect logging effect.
Moreover be satisfied well logging needs, leading screw 230 and guide peg 250 adopt longer vibrational power flow usually, and this longer structure adds the risk of logging operation; Because driving-chain exists multiple link and drive mechanism is longer, cause the structural stability of whole telescoping ram 200 poor, easily break down; Because its structure is comparatively complicated, make maintenance and change accessory comparatively complicated.
In view of this, urgently for above-mentioned technical problem, optimal design logging instrument of the prior art and telescoping ram thereof, for probe provides enough backup power, reduce the operating risk of constructing simultaneously.
Utility model content
The purpose of this utility model, for providing a kind of logging instrument and hydraulic sidewall contact device thereof, can provide enough backup power for probe, shorten the entire length of logging instrument, thus reduce the operating risk of construction.
For solving the problems of the technologies described above, the utility model provides a kind of hydraulic sidewall contact device of logging instrument, comprise the outer shell barrel of pull bar and two ends sealing, also comprise main spring and hydraulic pump, described outer shell barrel forms epicoele and cavity of resorption by piston is isolated, described main spring fixed cover is loaded on described epicoele, and the upper end of described pull bar is fixed on described piston, and described cavity of resorption is stretched out to connect probe in lower end; When being in retraction working position, the import of described hydraulic pump is communicated with described epicoele, exports and is communicated with described cavity of resorption, to promote described piston moves, and then compress described main spring, and drive on described pull bar and move and the probe that bounces back; When being in backup working position, described epicoele is communicated with described cavity of resorption, moves down so that described main spring promotes described piston, and then drives described pull bar move down and stretch out probe.
Hydraulic sidewall contact device of the present utility model, is divided into epicoele and cavity of resorption by piston by outer shell barrel, is delivered to cavity of resorption by hydraulic pump to after the low pressure oil pressurization in epicoele, and the hydraulic oil in cavity of resorption promotes piston moves, and moves to drive on pull bar, and then drives probe retraction; Meanwhile, epicoele is connected with main spring, can compress main spring in the process that piston moves, so, when hydraulic pressure air pump inoperative and epicoele is communicated with cavity of resorption time, the elastic-restoring force that main spring produces can promote piston and moves down, to drive pull bar to move down, and then promotion probe stretches out.
Visible, the power source that hydraulic sidewall contact device of the present utility model is popped one's head in using hydraulic oil as backup or retraction, with adopt compared with leading screw drives in prior art, the transmission link of hydraulic coupling is less, decrease the loss in power transmission process, enough radial backup power can be provided for probe, and then reduce the impact on probe backup such as mud cake; Simultaneously, there is due to hydraulic-driven the advantages such as volume is little, power foot, as compared to the form adopting leading screw and guide peg to drive in prior art, the length of telescoping ram can be shortened largely, make the structure of telescoping ram compacter, significantly reduce the operating risk of well logging construction; Moreover hydraulic sidewall contact device structure of the present utility model is comparatively simple, and hydraulically powered stability is higher, improves backup reliability, reduces fault rate.
Alternatively, also comprise the energy-storaging spring being fixedly set in described cavity of resorption, upper end and the described piston of described energy-storaging spring are connected, to stretch described energy-storaging spring when described piston moves; When being in backup working position, described energy-storaging spring pulls described pull bar to move down.
Alternatively, also comprise the dummy piston of shutoff in described epicoele upper end, described outer shell barrel and described dummy piston surround counter balance pocket, and the upper end of described dummy piston is connected by balancing spring and described outer shell barrel, and described counter balance pocket has the port with ft connection.
Alternatively, also comprise sub-arm and linking arm, the two ends of described sub-arm respectively with described pull bar with pop one's head in hinged, the two ends of described linking arm respectively with described outer shell barrel with pop one's head in hinged; When described pull bar moves up and down, described linking arm is driven to swing, to stretch out or the probe that bounces back around the hinged end of itself and described pull bar around itself and the hinged end of described outer shell barrel, described sub-arm respectively.
Alternatively, also comprise hole diameter arm, one end and the described pull bar of described hole diameter arm are hinged, to drive described hole diameter arm to swing around its hinged end when described pull bar moves up and down, the other end of described hole diameter arm are affixed to or away from the borehole wall.
Alternatively, also comprise linear position sensors, described hole diameter arm can change corresponding swing with borehole diameter and be close to the borehole wall all the time, and promotes described piston by described pull bar and move up and down; Described linear position sensors has the contact head abutted with described piston, to record borehole diameter.
Alternatively, also comprise safety valve, when the oil pressure of described cavity of resorption exceedes predetermined value, described safety valve is opened to be communicated with described epicoele and described cavity of resorption.
Alternatively, described hydraulic pump is connected with motor, and the power shaft of described hydraulic pump and the output shaft of described motor are same axle.
The utility model also provides a kind of logging instrument, and comprise probe described in probe and backup and be affixed to the telescoping ram of the borehole wall, described telescoping ram is the hydraulic sidewall contact device described in above-mentioned any one.
Because logging instrument of the present utility model comprises the hydraulic sidewall contact device described in above-mentioned any one, therefore the technique effect that above-mentioned any one hydraulic sidewall contact device produces all is applicable to logging instrument of the present utility model, repeats no more herein.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of set-up mode of logging instrument in prior art;
Fig. 2 is the structural representation of a kind of set-up mode of mechanical type telescoping ram in prior art;
Fig. 3 provides by the utility model the cross-sectional view of hydraulic sidewall contact device in a kind of detailed description of the invention;
Fig. 4 is the operating principle schematic diagram of counter balance pocket part in hydraulic sidewall contact device shown in Fig. 3;
Fig. 5 is the operating principle schematic diagram of the cathetus of hydraulic sidewall contact device shown in Fig. 3 position sensor;
Fig. 6 for hydraulic sidewall contact device shown in Fig. 3 be in retraction working position time view;
Fig. 7 is view when hydraulic sidewall contact device shown in Fig. 3 is in backup working position.
In Fig. 1-2:
Electronic circuit 100, telescoping ram 200, outer shell barrel 210, motor 220, leading screw 230, spring assembly 240, guide peg 250, linking arm 260, hole diameter arm 270, probe 300, connection grooved 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, main spring 3, hydraulic pump 4, piston 5, probe 6, energy-storaging spring 7, dummy piston 8, balancing spring 9, sub-arm 10, linking arm 11, hole diameter arm 12, linear position sensors 13, contact head 131, safety valve 14.
Detailed description of the invention
Core of the present utility model, for providing a kind of logging instrument and hydraulic sidewall contact device thereof, can provide enough backup power for probe, shorten the entire length of logging instrument, thus reduce the operating risk of construction.
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model provides a kind of logging instrument, and comprise the telescoping ram that the probe that carries out detecting and backup probe are affixed to the borehole wall, described telescoping ram is hydraulic sidewall contact device, to improve the reliability of backup, and can provide enough backup power.Below in conjunction with accompanying drawing, hydraulic sidewall contact device of the present utility model is described in detail.
Please refer to Fig. 3, hydraulic sidewall contact device of the present utility model comprises outer shell barrel 2, pull bar 1, main spring 3 and hydraulic pump 4.Shutoff can be carried out by seal plug is first-class in the two ends up and down of outer shell barrel 2, to form the cavity of sealing in the middle of it; Outer shell barrel 2 can from top to bottom extend, and logs well to be connected with other well logging apparatus and to stretch in well; Piston 5 can be set in the cavity of outer shell barrel 2, thus described cavity is separated to form epicoele 21 and cavity of resorption 22, epicoele 21 and cavity of resorption 22 are the cavity of two seal isolation, and outer shell barrel 2 is now equivalent to a hydraulic cylinder, are all filled with hydraulic oil in epicoele 21 and cavity of resorption 22.The upper end of described pull bar 1 is fixedly connected on the lower surface of piston 5, and that is, pull bar 1 is equivalent to piston 5 bar, and whole pull bar 1 is sleeved 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 be connected with probe 6, when pull bar 1 moves down, probe 6 can be driven protruding and the borehole wall that reclines, when pull bar 1 moves down, probe 6 can be driven inwardly to bounce back and away from the borehole wall, probe 6 specifically can be made to retract in the connection channel-shaped main body of described outer shell barrel 2 or logging instrument.Main spring 3 fixed cover is loaded on epicoele 21, specifically the upper end of main spring 3 can be fixedly connected with the inwall with epicoele 21, or arrange the connectors such as fixed block in epicoele 21, then be fixedly connected on the connectors such as fixed block by the upper end of main spring 3; The lower end of main spring 3 can be connected to piston 5, and namely the lower end of main spring 3 can be free end, and when piston 5 moves, the upper surface of piston 5 can abut 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, also can compress main spring 3 when piston 5 moves.The import of hydraulic pump 4 is communicated with epicoele 21, and outlet is communicated with cavity of resorption 22, and namely hydraulic pump 4 can pressurize to the low pressure oil in epicoele 21, then the hydraulic oil that pressurization is formed is delivered to cavity of resorption 22.
Particularly, hydraulic sidewall contact device of the present utility model has retraction working position and backup working position.When being in retraction working position, hydraulic pump 4 works, thus being delivered to cavity of resorption 22 by after the low pressure oil pressurization in epicoele 21, then the hydraulic oil be in cavity of resorption 22 promotes piston 5 and moves up, and drives connected pull bar 1 to move up while piston 5 moves up; Lower end due to pull bar 1 is connected with probe 6, when pull bar 1 moves, probe 6 just can be driven inwardly to bounce back, make probe 6 away from the borehole wall.Meanwhile, the main spring 3 be in epicoele 21 when piston 5 moves, can be compressed, make main spring 3 produce compressive strain.When being in backup working position, hydraulic pump 4 does not work, and epicoele 21 is connected with cavity of resorption 22, and now, piston 5 is subject to hydraulic oil in the downward thrust of main spring 3 and epicoele 21 to its downward pressure, and the hydraulic oil of cavity of resorption 22 upwards pressure to it; Due under the effect of pressure reduction, the hydraulic oil in cavity of resorption 22 just can flow to epicoele 21, and the pressure reduction in two chambeies is reduced rapidly, making a concerted effort that then piston 5 is subject to is downward, therefore piston 5 can move down, and then drive connected pull bar 1 to move down, make probe 6 protruding and be affixed to the borehole wall.
As herein described inside and outside be reference with logging instrument, with the bearing of trend of logging instrument for axis, in the axial direction, under the direction of the earth's crust is, the direction away from the earth's crust is upper; In the direction of longitudinal center line is, direction away from longitudinal center line is outward, when probe 6 is away from during longitudinal center line and protruding, to be affixed to the borehole wall, inwardly bounce back when probe 6 is near longitudinal center line, to be retracted to logging instrument, be convenient to move up and down to terminate or continue well logging with logging instrument.
Hydraulic sidewall contact device of the present utility model, is divided into epicoele 21 and cavity of resorption 22 by the cavity of outer shell barrel 2, to form hydraulic cylinder, then by hydraulic coupling driven plunger 5 is moved, drive probe 6 inwardly to bounce back to make pull bar 1 moves; In retraction process, piston 5 can compress the main spring 3 of epicoele 21, so that when hydraulic pump 4 does not work, the elastic force of main spring 3 can move down by pushing drawing rod 1, to drive probe 6 protruding.Visible, hydraulic sidewall contact device structure of the present utility model is comparatively simple, makes maintenance and change accessory more simple.What is more important, can provide driving force by the mode of pressurizeing to hydraulic oil, that is, during employing hydraulic-driven, corresponding dynamical element is without the need to taking larger volume, when the cross-sectional area of logging instrument is certain, the length shared by dynamical element can be shortened as much as possible; Meanwhile, as long as the length of pull bar 1 can meet stretching out of probe 6 and retraction demand, then the utility model can shorten the length of hydraulic sidewall contact device largely, makes the structure of hydraulic sidewall contact device more compact, and then shortens the length of whole logging instrument.Really as stated in the Background Art, because working environment at coal mines is comparatively complicated, when the contraction in length of logging instrument, the operating risk of well logging construction can be reduced largely, reduce accident rate.Moreover owing to adopting hydraulic coupling Direct driver piston 5, and pull bar 1 is connected on piston 5 and forms piston 5 bar, then hydraulic coupling directly can be passed to pull bar 1, decreases power transmission link, thus reduces the loss of power in transmittance process; And the power that hydraulic-driven relative mechanical drives is more sufficient, makes the hydraulic sidewall contact device of the application can be the 6 radial backup power providing enough of popping one's head in, ensure backup reliability, reduce the impact on well logging such as mud cake.
Further, as shown in Figure 3, hydraulic sidewall contact device of the present utility model can also comprise energy-storaging spring 7, energy-storaging spring 7 can be loaded on cavity of resorption 22 by fixed cover, specifically can be fixedly connected on the inwall of cavity of resorption 22 in its lower end, or the connectors such as fixed block are set on the inwall of cavity of resorption 22, then the lower end of energy-storaging spring 7 are fixed on the connectors such as fixed block; The upper end of energy-storaging spring 7 is fixedly connected with the lower surface of piston 5, then at retraction working position, can stretch when piston 5 moves energy-storaging spring 7, makes energy-storaging spring 7 produce tensile deformation.
When being in backup working position, piston 5 is subject to the downward thrust F of main spring 3
main, and be less than the oil pressure of cavity of resorption 22 due to the oil pressure of epicoele 21, then hydraulic oil produces thrust F upwards to piston 5
liquid, now, piston 5 is subject to the downward F that makes a concerted effort
close=F
main-F
liquid; The process moved downward due to piston 5 is the process that main spring 3 recovers deformation, then in the process that moves downward of piston 5, the deformation quantity of main spring 3 reduces thereupon, and be connected with cavity of resorption 22 due to epicoele 21, therefore cavity of resorption 22 also reduces gradually with the pressure reduction of epicoele 21, that is, although piston 5 is subject to downward making a concerted effort all the time, moves down along with piston 5 and reduce gradually with joint efforts, making the corresponding reductions of backup power that backup probe 6 stretches out.Just to above-mentioned technical problem, at cavity of resorption 22 fixed cover, energy-storaging spring 7 is housed in the present embodiment, as mentioned above, owing to there is tensile deformation when energy-storaging spring 7 moves on piston 5, then before piston 5 resets, there is tensile deformation in energy-storaging spring 7 all the time, and then produce downward tensile force f to piston 5 and store, that is, now piston 5 be subject to make a concerted effort F
close=F
store+ F
main-F
liquid, now piston 5 is subject to two downward active forces, before piston 5 does not reset, and F
storeand F
mainall the time exist, and then ensure enough backup power, backup probe 6 is affixed to the borehole wall all the time, meets the backup demand in the larger situation of borehole diameter.
Be appreciated that, connection between epicoele 21 and cavity of resorption 22 can be controlled by switch valves such as electromagnetic valves, such as, can arrange electromagnetic valve on piston 5, just can be communicated with epicoele 21 and cavity of resorption 22 when electromagnetic valve is opened, make the fluid of high-voltage oil cavity flow to low pressure oil pocket; When closed electromagnetic valve, epicoele 21 and cavity of resorption 22 seal isolation.
Further, incorporated by reference to Fig. 4, hydraulic sidewall contact device of the present utility model can also comprise dummy piston 8, dummy piston 8 can shutoff in the upper end of epicoele 21, due to the upper end shutoff of outer shell barrel 2, then dummy piston 8 and outer shell barrel 2 can enclose formation upper cavity in upper end, and this upper cavity is in the top of epicoele 21, is called counter balance pocket 23; That is, the direction of outer shell barrel 2 from top to bottom have three chambeies mutually sealed, be followed successively by counter balance pocket 23, epicoele 21 and cavity of resorption 22, sealed by dummy piston 8 between counter balance pocket 23 and epicoele 21, sealed by piston 5 between epicoele 21 and cavity of resorption 22.In detail, go back fixed cover in counter balance pocket 23 and balancing spring 9 is housed, the upper end of balancing spring 9 is fixedly connected in outer shell barrel 2, and lower end is fixedly connected with described dummy piston 8, and counter balance pocket 23 outer shell barrel 2 offers port 24, so that can pass through described port 24 and ft connection.
As shown in Figure 4, when logging instrument works in Oil/gas Well, along with the increase of well depth, the temperature of hydraulic oil raises, hydraulic oil is expanded, and then causes the pressure increase in epicoele 21, thus upwards (left side namely in Fig. 4) promotes dummy piston 8, thus compression balancing spring 9, to be balanced the pressure reduction produced at dummy piston about 8 two ends because hydraulic oil expands by balancing spring 9.Simultaneously, along with the increase of Oil/gas Well well depth, the pressure of environmental liquids can produce downward pressure to dummy piston 8, balance to upward pressure to dummy piston 8 with hydraulic oil, final and balancing spring 9 acting in conjunction, to make 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 that hydraulic oil and outside liquid act on the pressure of dummy piston 8 respectively.
In said structure, counter balance pocket 23, epicoele 21 and cavity of resorption 22 shares an outer shell barrel 2, that is, the hydraulic cylinder be made up of epicoele 21 and cavity of resorption 22 and counter balance pocket 23 can be carried out integrated design, to shorten the length of whole hydraulic sidewall contact device while significantly improving reliability, make hydraulic sidewall contact device more compact.For improving sealing reliability, sealing ring can be set in the outer ring of dummy piston 8 and piston 5, such as the O RunddichtringO of the outer ring of dummy piston shown in Fig. 4; In view of display demand, other views in Fig. 3-7 do not demonstrate sealing ring, also do not provide the detailed construction of sealing laminating, but, it will be understood by those skilled in the art that, for realizing utility model object, dummy piston 8 and piston 5 all can realize seal isolation.
On the basis of the above, hydraulic sidewall contact device of the present utility model can also comprise sub-arm 10 and linking arm 11, and as shown in Figure 3, the two ends of sub-arm 10 can respectively with pull bar 1 with pop one's head in 6 hinged, the two ends of linking arm 11 can respectively with outer shell barrel 2 with pop one's head in 6 hinged.Wherein, the upper end of sub-arm 10 can the hinged lower end with pull bar 1, and sub-arm 10 is hinged with probe 6 with its lower end, and the upper end of linking arm 11 can be articulated with the lower end of outer shell barrel 2, and the lower end of linking arm 11 can be hinged with probe 6; Sub-arm 10 and linking arm 11 can be hinged on the above-below direction of probe 6 respectively, and because outer shell barrel 2 can be stretched out in the lower end of pull bar 1, therefore the pin joint of linking arm 11 can be in the top of sub-arm 10 pin joint, as shown in Figure 3.
Particularly, pull bar 1, sub-arm 10, linking arm 11 and probe 6 can form quadric chain, and when logging well, the position of outer shell barrel 2 is fixed, therefore linking arm 11 is relative with the pin joint of outer shell barrel 2 fixing; That is, in this quadric chain, there is the fixing bar of three length and adjustable length bar, a fixing hinge, namely the length of sub-arm 10, linking arm 11 and probe 6 is fixed, the variable-length of pull bar 1, and the upper hinge of linking arm 11 is fixed.So, when pull bar 1 moves up, one of them bar of quadric chain is shortened, make linking arm 11 hinge on it along the clockwise oscillation of orientation shown in Fig. 3, and then drive sub-arm 10 clockwise oscillation, 6 inwardly to bounce back to pop one's head in; When pull bar 1 moves down, make one of them bar in quadric chain elongated, counter-clockwise swing is carried out along orientation shown in Fig. 3 to promote linking arm 11 hinge on it, drive sub-arm 10 counter-clockwise swing simultaneously, so that linking arm 11 and sub-arm 10 common outwards promotion probe 6, make probe 6 stretch out and the borehole wall that reclines.Be appreciated that described herein clockwise and be all described with orientation shown in Fig. 3 counterclockwise, only in order to express conveniently, should not be construed as any restriction to linking arm 11 and sub-arm 10 swing.
Visible, by the setting of above-mentioned sub-arm 10 and linking arm 11, make moving up and down of pull bar 1 that probe 6 can be driven to realize retraction and backup, be the swing of probe 6 by the transform linear motion of pull bar 1, improve the convenience of driving.Meanwhile, owing to adopting quadric chain to drive probe 6 to carry out action, the easy motion of probe 6 can be realized, and then improve the reliability of probe 6 retraction and backup, avoid probe 6 to damage; Sub-arm 10 and linking arm 11 can be coordinated mutually, jointly realize retraction and the backup of probe 6, to improve the positioning precision of probe 6.Certainly, those skilled in the art can adopt other drives structure to realize retraction and the backup of probe 6 completely, such as, the lower end of pull bar 1 can adopt the structure of similar background technology part (i.e. structure shown in Fig. 2) to arrange, namely the two joint arms be hinged are adopted, be not limited to above-mentioned sub-arm 10 and the form of linking arm 11, specifically with reference to prior art, can repeat no more herein.
In addition, the utility model can also comprise hole diameter arm 12, and hole diameter arm 12 also can be articulated with the lower end of pull bar 1, specifically can share a jointed shaft with sub-arm 10, namely the upper end of hole diameter arm 12 and sub-arm 10 is all articulated with the lower end of pull bar 1, and both jointed shafts are same axle; Or, hole diameter arm 12 also can not adopt same jointed shaft with sub-arm 10, as long as hole diameter arm 12 can extend in borehole diameter direction substantially with the jointed shaft of pull bar 1, so that hole diameter arm 12 can be affixed to when the hinged end of itself and pull bar 1 swings or away from the borehole wall.Moreover, when pull bar 1 moves up and down, hole diameter arm 12 can be driven to swing around the jointed shaft of itself and pull bar 1 so that the other end of hole diameter arm 12 (usual hole diameter arm 12 with upper end and pull bar 1 hinged, its other end is lower end) can be affixed to or away from the borehole wall.Those skilled in the art are to be understood that, various structure can be adopted to realize swing that pull bar 1 moves up and down hole diameter arm 12, such as, the mechanism of similar double leval jib mentioned above can be adopted, or the structure of be hinged two joint arms shown in background technology part; In view of hole diameter arm 12 belongs to a part for logging instrument, the parts comprised due to logging instrument are more, the structure of each parts is comparatively complicated, only its hydraulic sidewall contact device is described herein, part please with reference to prior art to the greatest extent for other, namely the motion of described hole diameter arm 12 belongs to a part of the prior art, is not described in detail herein.
Please further refer to Fig. 5, the utility model can also comprise linear position sensors 13, and linear position sensors 13 can be fixedly mounted in outer shell barrel 2, specifically can be fixedly installed on hydraulic pump 4, or in fixing other structures of opposite shell cylinder 2; Linear position sensors 13 has the contact head 131 abutted with piston 5.In well logging, hole diameter arm 12 can recline the borehole wall all the time, and in other words, along with the change of Oil/gas Well borehole diameter, hole diameter arm 12 can change, with the corresponding swing of change of borehole diameter, to ensure to recline the borehole wall.As described above, hole diameter arm 12 is connected with pull bar 1, then, when the corresponding swing of hole diameter arm 12, can react on pull bar 1, and then pushing drawing rod 1 moves up and down, moving up and down of pull bar 1 is passed to piston 5 then, and piston 5 is moved up and down.Because the contact head 131 of linear position sensors 13 abuts with piston 5, when piston 5 moves up and down (movement of the left and right directions shown in Fig. 5), the contact head 131 of linear position sensors 13 also moves up and down thereupon; Again because linear position sensors 13 other end opposite shell cylinder relative with contact head 131 2 is fixed, and be changeless in the position of well logging China and foreign countries thimble 2, so, linear position sensors 13 just can the change of accurate recording borehole diameter.Arrow in Fig. 5 represents the direction of motion of hole diameter arm 12, pull bar 1 and piston 5 respectively.
In detail, main spring 3 has carried out certain precommpression when assembling, and therefore, main spring 3 can give pull bar 1 one backup power all the time, and probe 6 is reclined the borehole wall.When borehole diameter becomes large, hole diameter arm 12 can expand outwardly, and then piston 5 is moved down, and with part release main spring 3, main spring 3 is reduced to the backup power of probe 6; But, because main spring 3 is unanimously in compressive state, therefore remain the backup to probe 6, to ensure the reliability of backup.
Change in location process about hole diameter arm 12 is as follows: when probe 6 moves up and down in well, and borehole diameter is constantly change.When probe 6 moves from large diameter well to the well of minor diameter, borehole diameter diminishes, and forces hole diameter arm 12 inwardly to shrink; Now, linear position sensors 13 receives the amount that hole diameter arm 12 inwardly shrinks, and is translated into the variable quantity of borehole diameter.In like manner, when probe 6 moves from the well of minor diameter to large diameter well, borehole diameter becomes large, and under the promotion of main spring 3, hole diameter arm 12 expands outwardly; Now, linear position sensors 13 receives the amount that hole diameter arm 12 expands outwardly, and is converted into the variable quantity of borehole diameter.
Hydraulic pump 4 of the present utility model can be the machine integrated structure of pump, namely hydraulic pump 4 can have motor by adapter sleeve, motor is for driving hydraulic pump 4, and the output shaft of motor can simultaneously as the power shaft of hydraulic pump 4, namely the output shaft of motor and the power shaft of hydraulic pump 4 are same axle, without the need to arranging the structures such as shaft coupling between motor and hydraulic pump 4.Adopt the machine integrated structure of pump, can structure be simplified on the one hand, maintenance convenience and structural stability can also be improved on the other hand.
Visible, the utility model inside adopts modularized design, and such as, pump is machine integrated, main spring 3 system, dummy piston 8 system and energy-storaging spring 7 system, and this modular design makes maintenance and change parts to become simpler.
Moreover the utility model can also comprise safety valve 14, in retraction process, epicoele 21 and cavity of resorption 22 opposing seal, and hydraulic pump 4 is to cavity of resorption 22 conveying high-pressure oil, the oil pressure of cavity of resorption 22 is constantly raised, to promote piston 5 moves; Now, when the oil pressure of cavity of resorption 22 exceedes predetermined value, safety valve 14 can be made automatically to open, to be communicated with epicoele 21 and cavity of resorption 22, to form epicoele 21 and the interface channel of cavity of resorption 22, avoid the oil pressure of cavity of resorption 22 to continue rise and affect processing safety.Usually, the MTP of cavity of resorption 22 is not higher than 10Mpa, when oil pressure exceedes this numerical value, safety valve 14 is opened automatically, hydraulic oil is flowed from cavity of resorption 22 to epicoele 21 under the effect of high pressure, namely flowed to low pressure oil district by high pressure oil area, within making the pressure of cavity of resorption 22 high pressure oil area in other words remain at 10Mpa.
Below in conjunction with accompanying drawing 6 and Fig. 7, the course of work of hydraulic sidewall contact device of the present utility model is described in detail.
As shown in Figure 6, after completing well logging, hydraulic sidewall contact device switches to retraction working position, low pressure oil in hydraulic pump 4 pairs of epicoeles 21 is pressurizeed, then the hydraulic oil after pressurization is delivered to cavity of resorption 22, the oil pressure of cavity of resorption 22 is raised, under differential pressure action, piston 5 moves up, and moves up to drive pull bar 1; When pull bar 1 moves, linking arm 11 and sub-arm 10 is driven inwardly to swing, with the probe 6 that bounces back; Meanwhile, hole diameter arm 12 also inwardly swings around the hinged end of itself and pull bar 1, with in shrinkage value outer shell barrel 2.
As shown in Figure 7, when logging well, logging instrument stretches in Oil/gas Well well, and now hydraulic sidewall contact device switches to backup working position, pushes probe 6 to the borehole wall.In detail, be connected between epicoele 21 with cavity of resorption 22, high-pressure oil flow in cavity of resorption 22 is to epicoele 21, and now started release by the main spring 3 compressed, the energy-storaging spring 7 be stretched also starts to recover deformation, and then produces downward making a concerted effort, under the effect that this is made a concerted effort to piston 5, piston 5 moves downward, and drives pull bar 1 to move down; As when the pull bar 1 of a connecting rod moves in quadric chain, drive linking arm 11 and sub-arm 10 outwards to swing, be affixed to the borehole wall with backup probe 6; Meanwhile, moving down of pull bar 1 drives hole diameter arm 12 outwards to swing, the borehole wall so that the lower end of hole diameter arm 12 reclines, the final operating position of formation shown in Fig. 7.
Wherein, the arrow in Fig. 6 and Fig. 7 represents the direction of motion of each parts; So that describe, represent the well of Oil/gas Well with the blank parts of centre, the filler being in well both sides represents stratum.
Above a kind of logging instrument provided by the utility model and hydraulic sidewall contact device thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (9)
1. the hydraulic sidewall contact device of a logging instrument, comprise the outer shell barrel (2) of pull bar (1) and two ends sealing, it is characterized in that, also comprise main spring (3) and hydraulic pump (4), described outer shell barrel (2) forms epicoele (21) and cavity of resorption (22) by piston (5) is isolated, described main spring (3) fixed cover is loaded on described epicoele (21), the upper end of described pull bar (1) is fixed on described piston (5), and described cavity of resorption (22) is stretched out to connect probe in lower end; When being in retraction working position, the import of described hydraulic pump (4) is communicated with described epicoele (21), outlet is communicated with described cavity of resorption (22), to promote described piston (5) moves, and then compress described main spring (3), and drive on described pull bar (1) and move and the probe (6) that bounces back; When being in backup working position, described epicoele (21) is communicated with described cavity of resorption (22), move down so that described main spring (3) promotes described piston (5), and then drive described pull bar (1) move down and stretch out probe (6).
2. hydraulic sidewall contact device as claimed in claim 1, it is characterized in that, also comprise the energy-storaging spring (7) being fixedly set in described cavity of resorption (22), upper end and the described piston (5) of described energy-storaging spring (7) are connected, to stretch described energy-storaging spring (7) when described piston (5) moves; When being in backup working position, described energy-storaging spring (7) pulls described pull bar (1) to move down.
3. hydraulic sidewall contact device as claimed in claim 1, it is characterized in that, also comprise the dummy piston (8) of shutoff in described epicoele (21) upper end, described outer shell barrel (2) and described dummy piston (8) surround counter balance pocket (23), the upper end of described dummy piston (8) is connected by balancing spring (9) and described outer shell barrel (2), and described counter balance pocket (23) has and the port of ft connection (24).
4. the hydraulic sidewall contact device as described in any one of claim 1-3, it is characterized in that, also comprise sub-arm (10) and linking arm (11), the two ends of described sub-arm (10) respectively with described pull bar (1) and pop one's head in (6) hinged, the two ends of described linking arm (11) respectively with described outer shell barrel (2) and pop one's head in (6) hinged; When described pull bar (1) moves up and down, described linking arm (11) is driven to swing, to stretch out or the probe (6) that bounces back around the hinged end of itself and described pull bar (1) around itself and the hinged end of described outer shell barrel (2), described sub-arm (10) respectively.
5. hydraulic sidewall contact device as claimed in claim 4, it is characterized in that, also comprise hole diameter arm (12), one end and the described pull bar (1) of described hole diameter arm (12) are hinged, so that described pull bar (1) drives described hole diameter arm (12) to swing around its hinged end when moving up and down, the other end of described 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 characterized in that, also comprise linear position sensors (13), described hole diameter arm (12) can change corresponding swing with borehole diameter and be close to the borehole wall all the time, and is promoted described piston (5) moved up and down by described pull bar (1); Described linear position sensors (13) has the contact head (131) abutted with described piston (5), to record borehole diameter.
7. hydraulic sidewall contact device as claimed in claim 4, it is characterized in that, also comprise safety valve (14), when the oil pressure of described cavity of resorption (22) exceedes predetermined value, described safety valve (14) is opened to be communicated with described epicoele (21) and described cavity of resorption (22).
8. hydraulic sidewall contact device as claimed in claim 4, it is characterized in that, described hydraulic pump (4) is connected with motor, and the power shaft of described hydraulic pump (4) and the output shaft of described motor are same axle.
9. a logging instrument, comprise probe (6) described in probe (6) and backup and be affixed to the telescoping ram of the borehole wall, it is characterized in that, described telescoping ram is the hydraulic sidewall contact device described in any one of the claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739662.0U CN205025461U (en) | 2015-09-22 | 2015-09-22 | Logging instrument and hydraulic pressure telescoping ram thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739662.0U CN205025461U (en) | 2015-09-22 | 2015-09-22 | Logging instrument and hydraulic pressure telescoping ram thereof |
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| CN205025461U true CN205025461U (en) | 2016-02-10 |
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| CN201520739662.0U Active CN205025461U (en) | 2015-09-22 | 2015-09-22 | Logging instrument and hydraulic pressure telescoping ram thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555585A (en) * | 2015-09-22 | 2017-04-05 | 万瑞（北京）科技有限公司 | A kind of logging instrument and its hydraulic sidewall contact device |
| CN107524440A (en) * | 2016-06-20 | 2017-12-29 | 万瑞（北京）科技有限公司 | A kind of repeat formation tester (RFT) and its probe assembly |
| CN109236271A (en) * | 2018-08-27 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of wireline logging underground pushing device |
| 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 |
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2015
- 2015-09-22 CN CN201520739662.0U patent/CN205025461U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555585A (en) * | 2015-09-22 | 2017-04-05 | 万瑞（北京）科技有限公司 | A kind of logging instrument and its hydraulic sidewall contact device |
| CN107524440A (en) * | 2016-06-20 | 2017-12-29 | 万瑞（北京）科技有限公司 | A kind of repeat formation tester (RFT) and its probe assembly |
| CN107524440B (en) * | 2016-06-20 | 2023-12-22 | 万瑞（北京）科技有限公司 | Repeated stratum tester and probe assembly thereof |
| CN109236271A (en) * | 2018-08-27 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of wireline logging underground pushing device |
| 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 |
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