CN108915666A - A kind of oilfield horizontal well mixed traction device - Google Patents
A kind of oilfield horizontal well mixed traction device Download PDFInfo
- Publication number
- CN108915666A CN108915666A CN201810555391.1A CN201810555391A CN108915666A CN 108915666 A CN108915666 A CN 108915666A CN 201810555391 A CN201810555391 A CN 201810555391A CN 108915666 A CN108915666 A CN 108915666A
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- CN
- China
- Prior art keywords
- component
- traction
- tractor
- shell
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
Abstract
The present invention relates to a kind of oilfield horizontal well mixed traction devices, including:Traction component, telescopic component and the Power Component coaxially set gradually;The telescopic component is fixedly connected with the traction component and Power Component respectively;The traction component is mobile for drawing the tractor;The telescopic component is used to drive the tractor mobile by stretching motion;The Power Component is for driving the tractor mobile.Tractor provided by the invention, provided tractive force are coefficient as a result, therefore than simple wheeled and to grab tractive force by arm-type tractor bigger due to the crawling wheel for grabbing arm rest and Power Component for being traction component;In entirely traction section crawling process, average speed than it is simple it is wheeled with grab by it is arm-type faster;The tractor of use, use flexibly can be mutually switched fast between continuous movement and compound motion both of which according to the specific operating condition in underground.
Description
Technical field
The present invention relates to oil field well robot fields, and in particular to a kind of oilfield horizontal well mixed traction device.
Background technique
Oil well needs to detect well intrinsic parameter by logger, and common vertical shaft is usually to lean on instrument self weight downward
It is deep into purpose section, however as the application of the horizontal well technology with many advantages, domestic and international horizontal well quantity is increased sharply, for
Horizontal well, the still method using vertical shaft by instrument self weight can not be allowed to arrive at purpose section, therefore horizontal well traction occur
Logger is sent to by device by the method for external force traction.
Oilfield horizontal well tractor is there are mainly two types of typical types at present, one is wheeled, passes through power drive idler wheel
Make tractor continuous moving, another kind is to grab by arm-type, grabs arm rest by two and alternately opens and closes, makes tractor intermittent movement.This
Two kinds of tractor has in common that, is all that by idler wheel and will grab the pressure that arm rest applies internal surface of sleeve pipe, converts
For the driving force for overcoming advance resistance, directly dragging test equipment and cable completes delivered downhole task.
The tractor of above two type, wheeled advantage are that operation is continuous, steady, and speed is fast, the disadvantage is that due to driving wheel
It is small with casing wall contact area, and be to continuously contact with, determine that its tractive force is smaller, underground obstacle climbing ability is weaker;And it grabs and leans on
Arm-type advantage is to grab arm rest and casing wall face contact, and tractive force is big, the disadvantage is that operation is intermittent, discontinuous, movement speed is slower,
And this form is since needs are exported compared with large traction tractor while mobile, it usually needs by electrohydraulic system come real
It is existing.
Summary of the invention
In order to solve the above-mentioned deficiency in the presence of the prior art, the present invention provides a kind of oilfield horizontal well and is led with hybrid
Lead device.
Technical solution provided by the invention is:A kind of oilfield horizontal well mixed traction device, including:Coaxially set gradually
Traction component (1), telescopic component (2) and Power Component (3);
The telescopic component (2) is fixedly connected with the traction component (1) and Power Component (3) respectively;
The traction component (1) is mobile for drawing the tractor;
The telescopic component (2) is used to drive the tractor mobile by stretching motion;
The Power Component (3) is for driving the tractor mobile.
Preferably, the Power Component (3) includes:Power shell and it is respectively arranged on the intracorporal crawling wheel group of the power shell
Part (8), telescope motor and power motor;
The power shell is equipped with the hole of creeping for wheel assembly (8) stretching contact oil well casing inner wall of creeping described in confession;
The telescope motor is used to the wheel assembly of creeping (8) stretching out the power shell, and arrives to the oil well set
On inside pipe wall;
The power motor drives the tractor mobile for driving described wheel assembly (8) rotation of creeping.
Preferably, the wheel assembly of creeping (8) includes:The crawling wheel of two groups of orthogonal directions arrangement, crawling wheel described in every group
Number be at least 4.
Preferably, the traction component (1) includes:Traction shell and it is respectively arranged on that the traction shell is intracorporal to grab arm rest
(7) and traction electric machine;
The traction shell grabs grabbing by hole by oil well casing inner wall equipped with arm rest (7) stretching is grabbed described in confession;
The traction electric machine is used to described grab arm rest (7) stretching out the traction shell, and arrives in the oil well casing
On wall, it is mobile to draw the tractor.
Preferably, described grab arm rest (7) are cyclic annular setting and number is at least 4 and grabs arm rest.
Preferably, the telescopic component (2) includes:Telescopic shell and the driving motor in the telescopic shell;
The both ends of the telescopic shell respectively with the traction shell of the traction component (1) and the Power Component (3)
Power shell is fixedly connected;
The driving motor drives the traction component (1) to extension for driving the telescopic shell to do stretching motion
Out.
Preferably, further include:For controlling the electrically-controlled component (4) of the tractor work;
The electrically-controlled component (4) includes:Electronically controlled housing and the electrical module in the electronically controlled housing;
The electronically controlled housing is fixedly connected with the power shell of the Power Component (3);
The electrical module driving motor with the traction electric machine of the traction component (1), the telescopic component (2) respectively
It is connected with the telescope motor of the Power Component (3) and power motor, for controlling the work of the tractor.
Preferably, further include:Logger (6);
The logger (6) is fixedly connected with the traction shell of the traction component (1).
Preferably, the tractor is set in oil well casing.
It preferably, further include the cable being coaxially disposed with the traction component (1), telescopic component (2) and Power Component (3)
Connector (5);Described cable connector (5) one end is connect with the electronically controlled housing, and the other end is fastenedly connected with external cable.
Compared with the immediate prior art, technical solution provided by the invention is had the advantages that:
(1) mixed traction device provided by the invention, including:The traction component that coaxially sets gradually, telescopic component and dynamic
Power component;The telescopic component is fixedly connected with the traction component and Power Component (3) respectively;The traction component is for leading
It is mobile to draw the tractor;The telescopic component is used to drive the tractor mobile by stretching motion;The Power Component
For driving the tractor mobile;There is provided tractive force is total due to the crawling wheel for grabbing arm rest and Power Component for being traction component
Same-action as a result, therefore than simple wheeled and to grab tractive force by arm-type tractor bigger;In entirely traction section crawling process
In, average speed than it is simple wheeled and grab by it is arm-type faster;The tractor of use, use flexibly, can according to the specific operating condition in underground,
It is mutually switched fast between continuous movement and compound motion both of which.
(2) technical solution provided by the invention, using tractor, in same consumption energy, distance of creeping is taken turns than merely
It formula and grabs by arm-type farther.
(3) technical solution provided by the invention, the tractor of use, in same consumption energy, obstacle climbing ability is than simple
It is wheeled and grab by arm-type stronger.
(4) technical solution provided by the invention, the tractor of use, use flexibly can be according to the specific operating condition in underground, even
Reforwarding is dynamic to be mutually switched fast between compound motion both of which.
Detailed description of the invention
Fig. 1 is retractor structures schematic diagram of the invention;
Fig. 2 is the continuous motor pattern schematic diagram of tractor of the invention;
Fig. 3 is the fully extended status diagram of telescopic component under tractor compound motion mode of the invention;
Fig. 4 is telescopic component fully retracted state schematic diagram under tractor compound motion mode of the invention;
Wherein, 1- traction component;2- telescopic component;3- Power Component;4- electrically-controlled component;5- cable connector;6- logging instrument
Device;7- grabs arm rest;8- creeps wheel assembly.
Specific embodiment
For a better understanding of the present invention, further details of the technical solution of the present invention with reference to the accompanying drawing.
As shown in Figures 1 to 4, a kind of oilfield horizontal well mixed traction device provided in this embodiment, including:Coaxially according to
Traction component 1, telescopic component 2 and the Power Component 3 of secondary setting;
The telescopic component 2 is fixedly connected with the traction component 1 and Power Component 3 respectively;
The traction component 1 is mobile for drawing the tractor;
The telescopic component 2 is used to drive the tractor mobile by stretching motion;
The Power Component 3 is for driving the tractor mobile.
Preferably, the Power Component 3 includes:Power shell and it is respectively arranged on the intracorporal wheel assembly of creeping of the power shell
8, telescope motor and power motor;
The power shell is equipped with the hole of creeping that wheel assembly 8 of creeping described in confession stretches out contact oil well casing inner wall;
The telescope motor is used to the wheel assembly 8 of creeping stretching out the power shell, and arrives to the oil well casing
On inner wall;
The power motor drives the tractor mobile for driving the rotation of wheel assembly 8 of creeping.
Preferably, the wheel assembly 8 of creeping includes:The crawling wheel of two groups of orthogonal directions arrangement, crawling wheel described in every group
Number is at least 4.
Preferably, the traction component 1 includes:Traction shell and be respectively arranged on the traction shell it is intracorporal grab arm rest 7 and
Traction electric machine;
The traction shell grabs grabbing by hole by oil well casing inner wall equipped with the stretching of arm rest 7 is grabbed described in confession;
The traction electric machine is used to the arm rest 7 of grabbing stretching out the traction shell, and arrives to the oil well casing inner wall
On, it is mobile to draw the tractor.
Preferably, described to grab that arm rest 7 is cyclic annular setting and number is at least 4 and grabs arm rest.
Preferably, the telescopic component 2 includes:Telescopic shell and the driving motor in the telescopic shell;
The both ends of the telescopic shell respectively with the traction component 1 traction shell and the Power Component 3 power
Shell is fixedly connected;
The driving motor drives the traction component 1 to forward extend out for driving the telescopic shell to do stretching motion.
Preferably, further include:For controlling the electrically-controlled component 4 of the tractor work;
The electrically-controlled component 4 includes:Electronically controlled housing and the electrical module in the electronically controlled housing;
The electronically controlled housing is fixedly connected with the power shell of the Power Component 3;
The electrical module respectively with the traction electric machine of the traction component 1, the driving motor of the telescopic component 2 and institute
Telescope motor and the power motor connection for stating Power Component 3, for controlling the work of the tractor.
Preferably, further include:Logger 6;
The logger 6 is fixedly connected with the traction shell of the traction component 1.
Preferably, the tractor is set in oil well casing.
It preferably, further include the cable connector 5 being coaxially disposed with the traction component 1, telescopic component 2 and Power Component 3;
Described 5 one end of cable connector is connect with the electronically controlled housing, and the other end is fastenedly connected with external cable.
Specifically,
As shown in Figure 1, horizontal well provided by the invention mixed traction device, including it is traction component 1, telescopic component 2, dynamic
Power component 3, electrically-controlled component 4 and cable connector 5, tractor front connect logger 6, and rear portion passes through cable connector 5 and cable
It is connected.
As shown in Fig. 2, horizontal well provided by the invention mixed traction device, using continuous motor pattern;In this mode
Under, traction component 1 does not start, and grabs arm rest 7 and is received in traction shell, Power Component 3 is used only and works;When work, draw first
Motor driven is creeped the crawling wheel rotation of wheel assembly 8, and the crawling wheel for the wheel assembly 8 that makes to creep stretches out traction shell, and arrives to oil well
On internal surface of sleeve pipe, necessary frictional force is provided for tractor movement, then by traction electric machine driving crawling wheel rotation, is driven entire
The movement of tractor.
As shown in figure 3, horizontal well provided by the invention mixed traction device, using telescopic component under compound motion mode
2 fully extended states;Under compound motion mode, Power Component 3 is in running order, while traction component 1 and telescopic component 2
Also start work;When the crawling wheel for wheel assembly 8 of creeping is in microinching or stop motion because resistance is larger, telescopic component 2
It drives traction component 1 to forward extend out by initial retracted mode, grabs arm rest 7 at the same time and be flared out, when telescopic component 2 stretches out
Reach capacity position when, grab arm rest 7 almost at the same open resist oil well casing inner wall.
As shown in figure 4, horizontal well provided by the invention mixed traction device, using telescopic component under compound motion mode
2 fully retracted states;State shown in Fig. 3, the driving motor work in telescopic component 2, telescopic component is by fully extended state
Withdraw, the crawling wheel collective effect with wheel assembly 8 of creeping, drive the equal tractors latter half of Power Component 3 and cable together to
Preceding movement;Extreme position is moved forward to latter half, completes an actuation cycle.
It after telescopic component 2 is fully retracted, grabs arm rest 7 and inwardly folds, be detached from casing wall, telescopic component 2 forward extends out again,
It drives the preceding parts such as traction component 1 to travel forward, carries out subsequent cycle movement.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. a kind of oilfield horizontal well mixed traction device, which is characterized in that including:The traction component (1) that coaxially sets gradually,
Telescopic component (2) and Power Component (3);
The telescopic component (2) is fixedly connected with the traction component (1) and Power Component (3) respectively;
The traction component (1) is mobile for drawing the tractor;
The telescopic component (2) is used to drive the tractor mobile by stretching motion;
The Power Component (3) is for driving the tractor mobile.
2. tractor as described in claim 1, which is characterized in that
The Power Component (3) includes:Power shell and it is respectively arranged on the intracorporal wheel assembly of creeping (8) of the power shell, flexible
Motor and power motor;
The power shell is equipped with the hole of creeping for wheel assembly (8) stretching contact oil well casing inner wall of creeping described in confession;
The telescope motor is used to the wheel assembly of creeping (8) stretching out the power shell, and arrives in the oil well casing
On wall;
The power motor drives the tractor mobile for driving described wheel assembly (8) rotation of creeping.
3. tractor as claimed in claim 2, which is characterized in that
The wheel assembly of creeping (8) includes:The crawling wheel of two groups of orthogonal directions arrangement, the number of crawling wheel described in every group are at least
4。
4. tractor as described in claim 1, which is characterized in that
The traction component (1) includes:Traction shell and it is respectively arranged on that the traction shell is intracorporal to grab arm rest (7) and traction is electric
Machine;
The traction shell grabs grabbing by hole by oil well casing inner wall equipped with arm rest (7) stretching is grabbed described in confession;
The traction electric machine is used to described grab arm rest (7) stretching out the traction shell, and arrives on the oil well casing inner wall,
It is mobile to draw the tractor.
5. tractor as claimed in claim 4, which is characterized in that
Described grab arm rest (7) are cyclic annular setting and number is at least 4 and grabs arm rest.
6. tractor as described in claim 1, which is characterized in that
The telescopic component (2) includes:Telescopic shell and the driving motor in the telescopic shell;
The both ends of the telescopic shell power with the traction shell of the traction component (1) and the Power Component (3) respectively
Shell is fixedly connected;
The driving motor drives the traction component (1) to forward extend out for driving the telescopic shell to do stretching motion.
7. tractor as described in claim 1, which is characterized in that further include:For controlling the automatically controlled of the tractor work
Component (4);
The electrically-controlled component (4) includes:Electronically controlled housing and the electrical module in the electronically controlled housing;
The electronically controlled housing is fixedly connected with the power shell of the Power Component (3);
The electrical module respectively with the traction electric machine of the traction component (1), the driving motor of the telescopic component (2) and institute
Telescope motor and the power motor connection for stating Power Component (3), for controlling the work of the tractor.
8. tractor as described in claim 1, which is characterized in that
Further include:Logger (6);
The logger (6) is fixedly connected with the traction shell of the traction component (1).
9. tractor as described in claim 1, which is characterized in that
The tractor is set in oil well casing.
10. tractor as claimed in claim 7, which is characterized in that further include and the traction component (1), telescopic component (2)
With the cable connector (5) of Power Component (3) coaxial arrangement;Described cable connector (5) one end is connect with the electronically controlled housing, another
End is fastenedly connected with external cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810555391.1A CN108915666A (en) | 2018-06-01 | 2018-06-01 | A kind of oilfield horizontal well mixed traction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810555391.1A CN108915666A (en) | 2018-06-01 | 2018-06-01 | A kind of oilfield horizontal well mixed traction device |
Publications (1)
Publication Number | Publication Date |
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CN108915666A true CN108915666A (en) | 2018-11-30 |
Family
ID=64418880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201810555391.1A Pending CN108915666A (en) | 2018-06-01 | 2018-06-01 | A kind of oilfield horizontal well mixed traction device |
Country Status (1)
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CN (1) | CN108915666A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114135241A (en) * | 2021-11-30 | 2022-03-04 | 西安石油大学 | Hybrid traction robot for horizontal well of oil field |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201144690Y (en) * | 2007-11-27 | 2008-11-05 | 中国石油天然气集团公司 | Casing horizontal well logging device |
US20090236101A1 (en) * | 2006-02-09 | 2009-09-24 | Nelson Keith R | Force Monitoring Tractor |
CN201747356U (en) * | 2010-07-30 | 2011-02-16 | 西安威盛电子仪器有限公司 | Motor driven wheel type downhole creeper |
US20110127046A1 (en) * | 2009-12-01 | 2011-06-02 | Franz Aguirre | Grip Enhanced Tractoring |
CN102720477A (en) * | 2012-06-05 | 2012-10-10 | 中国石油集团川庆钻探工程有限公司 | Wheeled telescopic continuous creeping tractor used for horizontal well |
CN102808589A (en) * | 2012-08-16 | 2012-12-05 | 中国石油大学(北京) | Motor-driven underground tractor for coiled tubing |
CN202788704U (en) * | 2012-08-16 | 2013-03-13 | 中国石油大学(北京) | Electrically-controlled hydraulic-driven coiled tubing downhole tractor |
CN104060960A (en) * | 2014-06-25 | 2014-09-24 | 中国石油大学(北京) | Self-straightening type underground drawing device |
CN204252893U (en) * | 2014-10-28 | 2015-04-08 | 中国石油天然气股份有限公司 | A kind of telescopic downhole instrument propeller of wriggling |
CN104775780A (en) * | 2015-03-17 | 2015-07-15 | 中国石油天然气股份有限公司 | Flexible connection type downhole instrument traction device |
CN204627481U (en) * | 2015-03-17 | 2015-09-09 | 中国石油天然气股份有限公司 | The formula that is flexible coupling downhole instrument tractor |
CN204782873U (en) * | 2015-06-17 | 2015-11-18 | 中国海洋石油总公司 | Through drilling fluid driven traction system |
CN105952403A (en) * | 2016-06-27 | 2016-09-21 | 清华大学 | Oil well cable tractor |
CN205977149U (en) * | 2016-06-22 | 2017-02-22 | 西安石油大学 | Hydraulic drive is telescopic coiled tubing tractor in turn |
CN206144497U (en) * | 2016-08-30 | 2017-05-03 | 西安旭丰科技发展有限责任公司 | Actuating mechanism of big traction force crawl device |
CN107882520A (en) * | 2017-11-08 | 2018-04-06 | 清华大学 | The horizontal well crawl device driven by single motor and hydraulic clutch |
-
2018
- 2018-06-01 CN CN201810555391.1A patent/CN108915666A/en active Pending
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090236101A1 (en) * | 2006-02-09 | 2009-09-24 | Nelson Keith R | Force Monitoring Tractor |
CN201144690Y (en) * | 2007-11-27 | 2008-11-05 | 中国石油天然气集团公司 | Casing horizontal well logging device |
US20110127046A1 (en) * | 2009-12-01 | 2011-06-02 | Franz Aguirre | Grip Enhanced Tractoring |
CN201747356U (en) * | 2010-07-30 | 2011-02-16 | 西安威盛电子仪器有限公司 | Motor driven wheel type downhole creeper |
CN102720477A (en) * | 2012-06-05 | 2012-10-10 | 中国石油集团川庆钻探工程有限公司 | Wheeled telescopic continuous creeping tractor used for horizontal well |
CN102808589A (en) * | 2012-08-16 | 2012-12-05 | 中国石油大学(北京) | Motor-driven underground tractor for coiled tubing |
CN202788704U (en) * | 2012-08-16 | 2013-03-13 | 中国石油大学(北京) | Electrically-controlled hydraulic-driven coiled tubing downhole tractor |
CN104060960A (en) * | 2014-06-25 | 2014-09-24 | 中国石油大学(北京) | Self-straightening type underground drawing device |
CN204252893U (en) * | 2014-10-28 | 2015-04-08 | 中国石油天然气股份有限公司 | A kind of telescopic downhole instrument propeller of wriggling |
CN104775780A (en) * | 2015-03-17 | 2015-07-15 | 中国石油天然气股份有限公司 | Flexible connection type downhole instrument traction device |
CN204627481U (en) * | 2015-03-17 | 2015-09-09 | 中国石油天然气股份有限公司 | The formula that is flexible coupling downhole instrument tractor |
CN204782873U (en) * | 2015-06-17 | 2015-11-18 | 中国海洋石油总公司 | Through drilling fluid driven traction system |
CN205977149U (en) * | 2016-06-22 | 2017-02-22 | 西安石油大学 | Hydraulic drive is telescopic coiled tubing tractor in turn |
CN105952403A (en) * | 2016-06-27 | 2016-09-21 | 清华大学 | Oil well cable tractor |
CN206144497U (en) * | 2016-08-30 | 2017-05-03 | 西安旭丰科技发展有限责任公司 | Actuating mechanism of big traction force crawl device |
CN107882520A (en) * | 2017-11-08 | 2018-04-06 | 清华大学 | The horizontal well crawl device driven by single motor and hydraulic clutch |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114135241A (en) * | 2021-11-30 | 2022-03-04 | 西安石油大学 | Hybrid traction robot for horizontal well of oil field |
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Application publication date: 20181130 |