CN105449592A - Cable pay-off device for downhole instrument and pay-off method - Google Patents
Cable pay-off device for downhole instrument and pay-off method Download PDFInfo
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- CN105449592A CN105449592A CN201510849960.XA CN201510849960A CN105449592A CN 105449592 A CN105449592 A CN 105449592A CN 201510849960 A CN201510849960 A CN 201510849960A CN 105449592 A CN105449592 A CN 105449592A
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- cable
- downhole instrument
- rotating shaft
- storage chamber
- shaft assembly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to a cable pay-off device for a downhole instrument and a pay-off method. The cable pay-off device for the downhole instrument comprises a cable storage cavity, wherein the cable storage cavity is formed in the downhole instrument and comprises a rotating shaft assembly, a clutch and a collector ring assembly; the rotating shaft assembly is arranged in the cable storage cavity and is used for coiling a cable; the clutch is connected with the rotating shaft assembly and is used for controlling the rotating direction of the rotating shaft assembly; the collector ring assembly comprises a rotor and a stator, which are matched with each other; the rotor is connected with the cable coiled on the rotating shaft assembly; and the stator is connected with a wire inlet end of the downhole instrument. Therefore, the cable pay-off device has the advantages that (1) power supply and information transmission of a downhole drilling tool can be effectively ensured by synchronous pay-off of the cable while drilling; (3) enough cable can be stored, so that the drilling depth of a downhole drilling device can be effectively improved and the drilling cost is reduced; and (3) the drilling depth of the downhole tool can be effectively measured by an advanced cable pay-off method.
Description
Technical field
The present invention relates to a kind of cable paying-off device and line-putting method, belong to drilling equipment field, be specifically related to a kind of cable paying-off device and line-putting method of downhole instrument.
Background technology
In oil exploration and development fields, conventional survey drilling well needs to use land rig or offshore drilling platform, by driving the drill bit of down-hole at the mud of drilling rod Inner eycle or pneumatic drill etc., reaches the object of fractured rock.This exploration mode drilling cost is high, and exploration risk is large.In order to fundamentally reduce exploration cost and exploration risk, Norway, the U.S., China etc. are are researching and developing a kind of brand-new unconventional drilling equipment, and namely without the automatic drilling apparatus in rig down-hole, this drilling apparatus can significantly reduce exploration drilling expense and exploration risk.
Can automatically creep in the earth formation without the automatic drilling apparatus in rig down-hole, whole drilling system comprises brokenly the parts such as rock, landwaste conveying, compression, detection.Broken rock drives bit by electrodrill and realizes, and the electric power needed for electrodrill is supplied by cable by ground or seabed, and cable is synchronously laid in the landwaste of well track along with creeping into of drilling apparatus.Do not need ground drilling equipment without the automatic drilling apparatus in rig down-hole, the motor driving drill bit to creep into is supplied by cable by ground power supply, and cable needs to be carried by drilling apparatus body, discharges along with creeping into.
Constantly piercing in the process on stratum without the automatic drilling apparatus in rig down-hole, the cable of needs is more and more longer, and meanwhile, more and more longer cable also will lay in the earth formation along with deepening continuously of drilling apparatus continuously.In fact, if do not have continual cable power supply, this drilling equipment cannot continue to creep on stratum, and its subversive probing mode also just loses meaning.Therefore, how to realize the storage of cable, how to ensure that this continued power without the automatic drilling apparatus in rig down-hole has just been put in face of us.
Summary of the invention
The supply that the present invention mainly solves the automatic drilling apparatus power supply in down-hole existing in prior art asks it is provide a kind of cable paying-off device and line-putting method of downhole instrument.This cable paying-off device and line-putting method are for storing power supply without rig downhole instrument and communication cable, synchronously discharge in drilling process, and lay in the earth formation, thus can for transmit electric power and information without rig down-hole ceremony device, for downhole instrument continue pierce stratum and provide safeguard.
In order to solve the problem, according to an aspect of the present invention, provide a kind of cable paying-off device of downhole instrument, comprise the cable storage chamber be arranged on downhole instrument, described cable storage chamber comprises:
Rotating shaft assembly, is arranged in described cable storage chamber, for coiling cable;
Clutch, is connected with described rotating shaft assembly, for controlling the direction of rotation of described rotating shaft assembly;
Collecting ring assembly, comprises the rotor and stator that cooperatively interact, and wherein, described rotor is connected with the cable that described rotating shaft assembly coils; Described stator is connected with the end of incoming cables of described downhole instrument.
Optimize, the cable paying-off device of above-mentioned a kind of downhole instrument, described cable storage chamber comprises main shaft and is placed on the shell outside described main shaft; Wherein, described rotating shaft assembly is by bearing assemble on main shaft, and described clutch and described collecting ring assembly are assemblied on described main shaft respectively.
Optimize, the cable paying-off device of above-mentioned a kind of downhole instrument, in described cable storage chamber, cable line outlet place is provided with directive wheel assembly.
Optimize, the cable paying-off device of above-mentioned a kind of downhole instrument, described directive wheel assembly comprises: be installed on the installing rack on described main shaft by fixed mount, is installed on the directive wheel on described installing rack by bolster, described fixed mount is equipped with wire protective ring.
Optimize, the cable paying-off device of above-mentioned a kind of downhole instrument, the cable line outlet place in described cable storage chamber is provided with retaining mechanism, described retaining mechanism comprises one in the anti-skidding lock core without peaked conical body structure, described antiskid lock in-core is provided with cable through hole, and the cable in described cable storage chamber penetrates described cable through hole from one end that described antiskid lock core diameter is larger and then passes from one end that diameter is less.
Optimize, the cable paying-off device of above-mentioned a kind of downhole instrument, described collecting ring inside is provided with the transducer for measuring its rotor rotating cycle.
In order to solve the problem, according to a further aspect in the invention, the cable unwrapping wire providing a kind of downhole instrument puts method, comprises the cable paying-off device described in above-mentioned arbitrary claim, comprises the following steps:
Cable storage step, leaves in described cable storage chamber for being coiled in advance by cable before downhole instrument is gone into the well;
Cable Connection Step, for being connected with ground power supply by the line outlet of one end of cable through cable storage chamber, and being wrapped in the other end of cable after on rotating shaft assembly and being connected with the cable input of downhole instrument;
Creep into unwrapping wire step, for when downhole instrument creeps in down-hole, utilize the pulling force of cable to discharge the cable coiling and leave in described cable storage chamber.
Optimize, the cable unwrapping wire of above-mentioned a kind of downhole instrument puts method, also comprises:
Depth finding step, for measuring the length of discharging cable by the cable metering unit be arranged in cable storage chamber, and converting the length of cable of metering the DU of downhole instrument to, transferring back to ground installation.
Optimize, the cable unwrapping wire of above-mentioned a kind of downhole instrument puts method, in described cable Connection Step, the cable be wrapped on rotating shaft assembly is firmly connected through the rotor wiring terminal with collecting ring assembly after clutch, and with line card, cable is fixed on rotating shaft assembly, then the leading-out terminal of the stator of collecting ring assembly is connected with the cable input of downhole instrument.
Therefore, present invention achieves without cable in rig drilling apparatus storage and discharge in order, and to have the following advantages: (1) synchronously discharges power supply and the information transmission that effectively can ensure downhole well tool with what bore cable; (2) drilling depth that enough cables can improve down hole drill device effectively can be stored, reduce drilling cost; (3) advanced cable dispensing mode effectively can measure the drilling depth of downhole tool.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention schematic diagrames;
Fig. 2 is the line outlet directive wheel profile of apparatus of the present invention;
Fig. 3 is the locking mechanism structure schematic diagram of apparatus of the present invention line outlet;
Fig. 4 is the lock core structure partial view in Fig. 3 in circle;
Fig. 5 is the vertical view of Fig. 4.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
In figure, main shaft 1, shell 2, rotating shaft assembly 3, lower flange 4, bottom end cover 5, upper flange 6, upper end cover 7, lower protecting cover 8, upper protecting cover 9, bearing 10, directive wheel assembly 11, clutch 12, clutch flat key 13, collecting ring assembly 14, first sealing ring 15, end cap flat key 16, second sealing ring 17, 3rd sealing ring 18, protective ring 19, fixed mount 20, screw 21, installing rack 22, bolster 23, directive wheel 24, lining 25, pin 26, packing ring 27, without oily lining 28, cable line outlet 29, cable incoming line 30, anti-skidding lock core 31, lock core cover 32, cable 33, cable storage chamber 34.
Embodiment:
As shown in Figure 1, a kind of cable paying-off device of downhole instrument.This device is the part without rig down hole drill device, can be connected by flange or hickey with down hole drill device.As can be seen from Figure 1, cable paying-off device mainly comprises: main shaft 1, shell 2, collecting ring assembly 14, clutch 12, rotating shaft assembly 3.Wherein:
Main shaft 1 is hollow structure, and centre is mud or landwaste passage, and main shaft 1 is mainly used in the main body carrying cable paying-off device.
Shell 2 is placed on outside main shaft 1, for bearing down-hole formation pressure and stoping extraneous landwaste or mud to enter apparatus of the present invention inner chamber.Shell 2 is by upper end cover 7 and upper flange 6, and bottom end cover 5 and lower flange 4 are assembled together with hollow main shaft 1; And be furnished with respectively at upper end cover 7 and bottom end cover 5 and store the going out of cable, entrance hole.
Be collecting ring assembly 14 above lower flange 4, the electric power of its rotor wiring end or data-signal can be transferred to its stator terminals by collecting ring assembly 14, realize 360 degree and to rotate arbitrarily and can not coiling; Further, there are the transducer and circuit that can measure its rotor rotating cycle in collecting ring 14 inside;
Be clutch 12 above collecting ring assembly 14, mainly utilize the function that its one direction rotates;
Be rotating shaft assembly 3 above clutch 12, be assembled together by bearing 10 and protecting cover 8,9 with hollow main shaft 1, rotating shaft assembly 12 connects together with clutch 12, rotates only with one direction; This rotating shaft assembly 3 is mainly used to coil cable, and cable one encloses lamination and is wrapped on rotating shaft assembly 3, can realize folding and unfolding cable by positive and negative rotation; Be directive wheel assembly 11 above rotating shaft assembly 3, the detailed construction schematic diagram of directive wheel assembly 11 can see Fig. 2;
The line outlet of cable is on upper end cover 7, and line outlet has retaining mechanism, and when can ensure apparatus of the present invention unwrapping wire, cable can only go out and can not enter, and concrete cable locking mechanism is see Fig. 3.
Apparatus of the present invention are mainly used in without in rig down hole drill device system, for storing cable without rig down hole drill device, and synchronously discharge out cable when creeping into.The assembling process describing apparatus of the present invention see Fig. 1 is as follows:
(1) on main shaft 1, collecting ring assembly 14 is installed successively, fixes with pin key, clutch 12 is installed, fixes with flat key;
(2) the lower protecting cover 8 of rotating shaft assembly 3 is installed on hollow main shaft 1, bearing 10 successively, rotating shaft assembly 3 and upper protecting cover 9, and all fixes;
(3) by collecting ring assembly 14, clutch 12 and rotating shaft assembly 3 three partial fixing;
(4) cable is passed clutch 12, the rotor wiring terminal with collecting ring assembly 14 firmly connects, and is fixed on rotating shaft assembly 3 with line card by cable;
(5) by the cable that will store in order, one encloses lamination is wrapped on rotating shaft assembly 3;
(6) directive wheel assembly 11 is assembled;
(7) bottom end cover 5 of apparatus of the present invention and lower flange 4 is assembled, and with flat key 16, they are locked with main shaft 1, then from the stator outgoing cable of collecting ring assembly 14 to lower incoming line 30;
(8) by the cable joint that is coiled on rotating shaft 3 through the wire casing of directive wheel 11, assemble shell 2 and the upper flange 6 of apparatus of the present invention successively, and locked with flat key 13;
(9) by cable from directive wheel 11 extract out, through the line outlet 29 of upper end cover 7, then by upper end cover 7 with upper flange 6 and hollow main shaft 1 locked;
(10) assemble complete.
In cable paying-off device of the present invention, the structure of directive wheel assembly 11 as shown in Figure 2.Directive wheel assembly 11 is arranged on the line outlet place of apparatus of the present invention, and for taking out line guiding to cable, freely can adjust along with cable tension direction, directive wheel assembly 11 increases the horizontal arm of force taking out line power, and the line resistance of taking out during unwrapping wire is reduced.Directive wheel assembly 11 mainly comprises: the bolster 23, the wherein installing rack 22 of directive wheel 24 being fixed on the fixed mount 20 of hollow main shaft 1, supporting guide wheel 24, installing rack 22 is assembled by screw 21 and fixed mount 20, bolster 23 is assemblied on installing rack 22 locked by pin 26, and lining 25 is housed between directive wheel 24 and bolster 23; Fixed mount 20 is also connected by screw protective ring 19, has been mainly used to prevent the cable be wrapped on rotating shaft assembly 3 from crossing pine and coming off.
Fig. 3-5 is retaining mechanism schematic diagrames that apparatus of the present invention are arranged at cable outlet mouth.Cable outlet mouth is arranged on the top of apparatus of the present invention, and in the process of unwrapping wire, cable is preferably in exceptionally straight state all the time, if lax, by cable gravity effect, cable slack pours cable bin into, causes follow-up cable normally to discharge.In order to solve this problem, specially devise the retaining mechanism shown in Fig. 3-5 at cable line outlet place.Retaining mechanism mainly comprises: anti-skidding lock core 31, lock core cover 32.Wherein, anti-skidding lock core 31 is made up of rubber, one large one small, and similar one does not have pointed cone, and centre has through hole to pass cable; Anti-skidding lock core 31 is arranged on the horn mouth place of cable outlet mouth, locates compacting by lock core cover 32;
In cable drum process, cable is only to pass through the outwards movement of lock core 31 mesopore, if External cable relaxes, gravitate, lax cable moves down, cable increases suddenly with the frictional force between lock core 31, causes lock core at horn mouth place locking cable, finally reaches the object preventing cable slide downward.
The present invention is mainly used in without in rig downhole instrument, for storing power supply and the cable communicated, and continues to discharge out cable along with creeping into of down hole drill device.
Adopt after said structure, utilize the cable paying-off device of the present embodiment to enter the step of unwrapping wire operation as follows:
Cable storage step, leaves in described cable storage chamber for being coiled in advance by cable before downhole instrument is gone into the well;
Cable Connection Step, for the line outlet of one end of cable through cable storage chamber is connected with ground power supply, and the other end of cable is wrapped on rotating shaft assembly, so the cable be wrapped on rotating shaft assembly is firmly connected through the rotor wiring terminal with collecting ring assembly after clutch, and with line card, cable is fixed on rotating shaft assembly, then the leading-out terminal of the stator of collecting ring assembly is connected with the cable input of downhole instrument.
Creep into unwrapping wire step, for when downhole instrument creeps in down-hole, utilize the pulling force of cable to discharge the cable coiling and leave in described cable storage chamber.
Depth finding step, for measuring the length of discharging cable by the cable metering unit be arranged in cable storage chamber, and converting the length of cable of metering the DU of downhole instrument to, transferring back to ground installation.
The power supply communication cable that the present invention deposits, can power for downhole tool, and realizes the data communication on down-hole and ground, by the bidirectional data transfers of cable, volume of transmitted data is large, quality is high, speed is fast, is more conducive to Timeliness coverage oil gas, improves annual wildcat success rate.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ main shaft 1 herein, shell 2, rotating shaft assembly 3, lower flange 4, bottom end cover 5, upper flange 6, upper end cover 7, lower protecting cover 8, upper protecting cover 9, bearing 10, directive wheel assembly 11, clutch 12, clutch flat key 13, collecting ring assembly 14, first sealing ring 15, end cap flat key 16, second sealing ring 17, 3rd sealing ring 18, protective ring 19, fixed mount 20, screw 21, installing rack 22, bolster 23, directive wheel 24, lining 25, pin 26, packing ring 27, without oily lining 28, cable line outlet 29, cable incoming line 30, anti-skidding lock core 31, lock core cover 32, cable 33, cable storage chamber 34 term such as grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (9)
1. a cable paying-off device for downhole instrument, comprises the cable storage chamber (34) be arranged on downhole instrument, it is characterized in that, described cable storage chamber (34) comprising:
Rotating shaft assembly (3), is arranged in described cable storage chamber (34), for coiling cable;
Clutch (12), is connected with described rotating shaft assembly (3), for controlling the direction of rotation of described rotating shaft assembly (3);
Collecting ring assembly (14), comprises the rotor and stator that cooperatively interact, and wherein, described rotor is connected with the upper cable coiled of described rotating shaft assembly (3); Described stator is connected with the end of incoming cables of described downhole instrument.
2. the cable paying-off device of a kind of downhole instrument according to claim 1, is characterized in that, described cable storage chamber (34) comprises main shaft (1) and is placed on described main shaft (1) shell outward (2); Wherein, described rotating shaft assembly (3) is assemblied on main shaft (1) by bearing (10), and described clutch (12) and described collecting ring assembly (14) are assemblied on described main shaft (1) respectively.
3. the cable paying-off device of a kind of downhole instrument according to claim 2, is characterized in that, in described cable storage chamber (34), cable line outlet place is provided with directive wheel assembly (11).
4. the cable paying-off device of a kind of downhole instrument according to claim 3, it is characterized in that, described directive wheel assembly (11) comprising: be installed on the installing rack (22) on described main shaft (1) by fixed mount (20), be installed on the directive wheel (24) on described installing rack (22) by bolster (23), described fixed mount (20) be equipped with wire protective ring (19).
5. the cable paying-off device of a kind of downhole instrument according to claim 1, it is characterized in that, the cable line outlet place (29) of described cable storage chamber (34) is provided with retaining mechanism, described retaining mechanism comprises one in the anti-skidding lock core (31) without peaked conical body structure, be provided with cable through hole in described anti-skidding lock core (31), the cable in described cable storage chamber (34) penetrates described cable through hole from one end that described anti-skidding lock core (31) diameter is larger and then passes from one end that diameter is less.
6. the cable paying-off device of a kind of downhole instrument according to claim 1, is characterized in that, described collecting ring (14) inside is provided with the transducer for measuring its rotor rotating cycle.
7. the cable unwrapping wire of downhole instrument puts a method, comprises the cable paying-off device described in above-mentioned arbitrary claim, it is characterized in that, comprise the following steps:
Cable storage step, leaves in described cable storage chamber for being coiled in advance by cable before downhole instrument is gone into the well;
Cable Connection Step, for being connected with ground power supply by the line outlet of one end of cable through cable storage chamber, and being wrapped in the other end of cable after on rotating shaft assembly and being connected with the cable input of downhole instrument;
Creep into unwrapping wire step, for when downhole instrument creeps in down-hole, utilize the pulling force of cable to discharge the cable coiling and leave in described cable storage chamber.
8. the cable unwrapping wire of a kind of downhole instrument according to claim 6 puts method, it is characterized in that, also comprises:
Depth finding step, for measuring the length of discharging cable by the cable metering unit be arranged in cable storage chamber, and converting the length of cable of metering the DU of downhole instrument to, transferring back to ground installation.
9. the cable unwrapping wire of a kind of downhole instrument according to claim 6 puts method, it is characterized in that, in described cable Connection Step, the cable be wrapped on rotating shaft assembly is firmly connected through the rotor wiring terminal with collecting ring assembly after clutch, and with line card, cable is fixed on rotating shaft assembly, then the leading-out terminal of the stator of collecting ring assembly is connected with the cable input of downhole instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849960.XA CN105449592B (en) | 2015-11-27 | 2015-11-27 | The cable paying-off device and line-putting method of a kind of downhole instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849960.XA CN105449592B (en) | 2015-11-27 | 2015-11-27 | The cable paying-off device and line-putting method of a kind of downhole instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105449592A true CN105449592A (en) | 2016-03-30 |
| CN105449592B CN105449592B (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510849960.XA Expired - Fee Related CN105449592B (en) | 2015-11-27 | 2015-11-27 | The cable paying-off device and line-putting method of a kind of downhole instrument |
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| Country | Link |
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| CN (1) | CN105449592B (en) |
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| CN105932507A (en) * | 2016-04-18 | 2016-09-07 | 中国石油天然气集团公司 | Collector slip ring device for electric drilling tool |
| CN108574225A (en) * | 2017-05-03 | 2018-09-25 | 都函 | Construction intelligence wall spool cable wire pulling machine |
| CN114221188A (en) * | 2022-01-13 | 2022-03-22 | 北京三一智造科技有限公司 | Swivel joint and operation machine |
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| CN114221188B (en) * | 2022-01-13 | 2024-02-20 | 北京三一智造科技有限公司 | Swivel joint and operation machinery |
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|---|---|
| CN105449592B (en) | 2017-07-04 |
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