CN119801423A - A shallow ultra-long horizontal well casing with a traction device and a use method thereof - Google Patents
A shallow ultra-long horizontal well casing with a traction device and a use method thereof Download PDFInfo
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- CN119801423A CN119801423A CN202510001806.0A CN202510001806A CN119801423A CN 119801423 A CN119801423 A CN 119801423A CN 202510001806 A CN202510001806 A CN 202510001806A CN 119801423 A CN119801423 A CN 119801423A
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Abstract
本发明公开一种带有牵引装置的浅层超长水平井套管及其使用方法，装置包括套管和设置在套管前端的牵引机构，牵引机构包括动力螺杆和传动蜗杆，动力螺杆包括定子和转动设置在定子内的转子；传动蜗杆后端与定子相连且能够在定子的带动下旋转；传动蜗杆上啮合连接有第一履带式行走机构和第二履带式行走机构，第一履带式行走机构与第二履带式行走机构均能在传动蜗杆带动下移动；第一履带式行走机构与第二履带式行走机构还通过张紧机构相连，张紧机构能够沿传动蜗杆径向伸缩，推动设置于第一履带式行走机构中的第一履带，以及设置于第二履带式行走机构中的第二履带沿靠近或远离井壁的方向移动。本发明装置能够带动套管下至孔底，结构简单、操作方便。
The invention discloses a shallow ultra-long horizontal well casing with a traction device and a method for using the same. The device comprises a casing and a traction mechanism arranged at the front end of the casing, the traction mechanism comprises a power screw and a transmission worm, the power screw comprises a stator and a rotor rotatably arranged in the stator; the rear end of the transmission worm is connected to the stator and can rotate under the drive of the stator; the transmission worm is meshed with a first crawler-type walking mechanism and a second crawler-type walking mechanism, both of which can move under the drive of the transmission worm; the first crawler-type walking mechanism and the second crawler-type walking mechanism are also connected through a tensioning mechanism, the tensioning mechanism can be radially extended and retracted along the transmission worm, and the first crawler arranged in the first crawler-type walking mechanism and the second crawler arranged in the second crawler-type walking mechanism are pushed to move in a direction close to or away from the well wall. The device of the invention can drive the casing down to the bottom of the hole, has a simple structure and is easy to operate.
Description
Technical Field
The invention belongs to the technical field of coalbed methane exploitation, and particularly relates to a shallow ultra-long horizontal well casing pipe with a traction device and a use method thereof.
Background
In the coal mine filling and mining operation, the operation mode of conveying filling slurry in the goaf is communicated through ground drilling, so that the filling operation and the coal mining are performed in parallel under the condition that the arrangement of coal face equipment is not affected, and the purpose of rapid and efficient filling is achieved. If the vertical hole is used as a slurry conveying channel, a large number of holes need to be drilled in order to cover a goaf (working face), and the defects of large occupied area and high construction cost exist. However, because the vertical depth of the drilled hole is small, the horizontal section is long, the lowering pressure which can be applied when the sleeve is lowered is limited, the friction resistance of the sleeve is large, the sleeve is difficult to be lowered into the bottom of the hole, so the sleeve lowering of the horizontal well with the ultra-long horizontal section is a difficult problem faced by drilling engineering, the conventional traction type sleeve lowering device and method cannot realize circulating drilling fluid in the auxiliary sleeve lowering process, the sleeve lowering is inconvenient to process when the sleeve is lowered and is blocked, the advantages of the horizontal well with the ultra-long horizontal section cannot be exerted finally, and the improvement is needed.
Disclosure of Invention
Aiming at the defects and the shortages in the prior art, the invention provides a shallow ultra-long horizontal well casing pipe with a traction device and a use method thereof, so as to solve the shortages in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the shallow overlength horizontal well casing with the traction device comprises a casing and a traction mechanism arranged at the front end of the casing, wherein the traction mechanism comprises a power screw and a transmission worm, and the power screw comprises a stator and a rotor arranged in the stator;
The rear end of the transmission worm is connected with the stator and can rotate under the drive of the stator, a first crawler-type travelling mechanism and a second crawler-type travelling mechanism are connected to the transmission worm in a meshed manner, and both the first crawler-type travelling mechanism and the second crawler-type travelling mechanism can move under the drive of the transmission worm;
The first crawler-type running mechanism and the second crawler-type running mechanism are respectively connected with the stator through the traction rod, the first crawler-type running mechanism and the second crawler-type running mechanism are further connected through the tensioning mechanism, the tensioning mechanism can radially stretch and retract along the transmission worm, the first crawler arranged in the first crawler-type running mechanism is pushed, and the second crawler arranged in the second crawler-type running mechanism moves along the direction close to or far away from the well wall.
The invention also has the following technical characteristics:
The tensioning mechanism comprises a pushing oil cylinder, wherein a first piston and a second piston are arranged in the pushing oil cylinder, one end, far away from the second piston, of the first piston is connected with a first tensioning spring, the other end of the first tensioning spring is connected with a first crawler support piece, one end, far away from the first piston, of the second piston is connected with a second tensioning spring, and the other end of the second tensioning spring is connected with a second crawler support piece;
The first piston and the second piston form a containing cavity, the containing cavity is communicated with a liquid inlet formed in the side wall of the pushing oil cylinder, the liquid inlet is connected with a hydraulic pump through a pipeline, the first piston can radially move along a transmission worm under the driving of the hydraulic pump to drive the first crawler to be close to or far away from a well wall, and the second piston can radially move along the transmission worm under the driving of the hydraulic pump to drive the second crawler to be close to or far away from the well wall.
Furthermore, the first crawler-type running mechanism and the second crawler-type running mechanism have the same structure and are arranged at two sides of the transmission worm in a mirror symmetry mode.
Further, the first crawler traveling mechanism comprises a first crawler wheel support frame, the first crawler is wound on the first crawler wheel support frame, and a plurality of first crawler wheels in rolling contact with the first crawler wheel are arranged on the crawler wheel support frame;
The second crawler type travelling mechanism comprises a second crawler wheel supporting frame, the second crawler is wound on the second crawler wheel supporting frame, and a plurality of second crawler wheels in rolling contact with the second crawler wheels are arranged on the second crawler wheel supporting frame.
Furthermore, spiral teeth are formed on the outer wall of the transmission worm, and first crawler teeth capable of being meshed and connected with the spiral teeth are formed on the contact surfaces of the first crawler running mechanism and the second crawler running mechanism and the transmission worm.
Further, a second crawler tooth which can be meshed with the spiral tooth is arranged on the contact surface of the second crawler and the transmission worm.
Further, one end of the traction rod is connected with the stator, and the other end of the traction rod is connected with the first crawler-type travelling mechanism or the second crawler-type travelling mechanism.
Furthermore, the front end of the transmission worm is also provided with a power conversion module and a judgment decision module, and a pressure sensor is also arranged in the pushing oil cylinder;
the power conversion module is respectively connected with the pressure sensor and the judgment decision module, and can convert mechanical energy generated by rotation of the transmission worm into electric energy and supply the generated electric energy to the pressure sensor and the judgment decision module;
The pressure sensor is in communication connection with the judgment decision module and is used for collecting pressure values in the pushing oil cylinder and transmitting the collected pressure values to the judgment decision module;
The judging and deciding module can compare the received pressure value with a preset pressure value and send a hydraulic pump start-stop instruction according to a comparison result.
The invention also discloses a use method of the shallow ultra-long horizontal well casing pipe with the traction device, which comprises the following steps:
Step 1, performing well flushing operation after drilling of a shallow ultra-long horizontal well;
step 2, the shallow overlength horizontal well casing with the traction device is put into the shallow overlength horizontal well, so that the casing descends in a drilled hole under the action of dead weight; when the friction force between the sleeve and the well wall is greater than or equal to the self weight of the sleeve, injecting slurry into the sleeve to start the traction mechanism, and recording the weight of the injected slurry in the grouting process;
Step 3, in the grouting process, the pressure sensor collects the pressure value in the pushing oil cylinder in real time, and when the pressure value in the pushing oil cylinder cavity calculated by the decision-making module is judged to be greater than or equal to the pressure value collected by the pressure sensor in real time, the hydraulic pump is started, liquid is pumped into the hydraulic pump, and the first crawler-type travelling mechanism and the second crawler-type travelling mechanism are pushed to move along the extending direction of the well bore;
And 4, after the traction device reaches the bottom of the well, cementing slurry to complete well cementation.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) The device of the invention performs casing running construction by arranging the traction mechanism at the front end of the casing, can ensure that the casing runs to the bottom of the hole, and particularly, is provided with the crawler-type travelling mechanism on the transmission worm, and the crawler-type travelling mechanism runs along the extending direction of the well wall under the drive of the transmission worm, thereby providing effective power for the casing running.
(2) The device is driven by hydraulic force in the sleeve to realize friction contact between the crawler belt and the well wall, and the device is only required to adopt drilling mud and clear water without other auxiliary equipment, thereby having the advantage of convenient construction.
(3) The tensioning force of the spring can be adjusted by adjusting the pumping amount of liquid in the hydraulic pump, so that the problems that the crawler type running mechanism damages the hole wall due to overlarge tensioning force and the crawler type running mechanism cannot run due to insufficient friction force between the crawler type running mechanism and the hole wall due to overlarge tensioning force are avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
FIG. 2 is a schematic view of a part of the structure of the device of the present invention;
FIG. 3 is a schematic diagram of the engagement of the drive worm with the first crawler travel mechanism;
FIG. 4 is a schematic view of the tensioning mechanism of embodiment 1;
fig. 5 is a partial schematic view of a first crawler travel mechanism.
The meaning of the reference numerals in the drawings:
1-sleeve, 2-traction mechanism, 3-power screw, 4-driving worm, 5-first crawler type running mechanism, 6-second crawler type running mechanism, 7-tensioning mechanism, 8-traction rod, 9-first crawler tooth, 10-second crawler tooth, 31-stator, 32-rotor, 51-first crawler, 52-first crawler wheel supporting frame, 53-first crawler wheel, 61-second crawler, 62-second crawler wheel supporting frame, 63-second crawler wheel, 71-pushing cylinder, 72-first piston, 73-second piston, 74-first tensioning spring, 75-second tensioning spring, 76-first crawler support, 77-second crawler support, 78-accommodating cavity, 79-hydraulic pump.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The following specific embodiments of the present application are given according to the above technical solutions, and it should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present application. The present application will be described in further detail with reference to examples.
In describing the present invention in terms of orientations, the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate orientations or positional relationships merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless otherwise indicated, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or both in internal communication or in an interactive relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The terms involved in the present invention are explained below:
friction traction refers to the frictional force between the traction mechanism and the borehole wall that provides traction.
All parts in the present invention are known in the art, unless otherwise specified.
Example 1:
According to the technical scheme, as shown in fig. 1 to 3, the embodiment provides a shallow ultra-long horizontal well casing with a traction device, which comprises a casing 1 and a traction mechanism 2 arranged at the front end of the casing 1, wherein the traction mechanism 2 comprises a power screw 3 and a driving worm 4, the power screw 3 comprises a stator 31 and a rotor 32 arranged in the stator 31, the stator 31 and the rotor 32 are coaxially sleeved, the stator 31 and the rotor 32 are in clearance fit, namely, the rotor 32 is arranged in the stator 31 and is in rotary connection with the stator 31, and the stator 31 can rotate around the axis of the motor under the drive of grouting slurry entering the power screw 3.
As shown in fig. 2, the rear end of the transmission worm 4 is connected with a stator 31 and can rotate under the drive of the stator 31, the upper side and the lower side of the front end of the transmission worm 4 are respectively connected with a first crawler-type travelling mechanism 5 and a second crawler-type travelling mechanism 6 in a meshed manner, and both the first crawler-type travelling mechanism 5 and the second crawler-type travelling mechanism 6 can move under the drive of the transmission worm 4, so that the first crawler-type travelling mechanism 5 and the second crawler-type travelling mechanism 6 can climb on a well wall along the extending direction of the well wall;
The first crawler travel mechanism 5 and the second crawler travel mechanism 6 used in this embodiment 1 are crawler travel mechanisms that have been disclosed in the prior art.
The first crawler-type running mechanism 5 and the second crawler-type running mechanism 6 are respectively connected with the stator 31 through the traction rod 8, the first crawler-type running mechanism 5 and the second crawler-type running mechanism 6 are further connected through the tensioning mechanism 7, the tensioning mechanism 7 can radially stretch and retract along the transmission worm 4, the first crawler belt 51 arranged in the first crawler-type running mechanism 5 and the second crawler belt 61 arranged in the second crawler-type running mechanism 6 are pushed to move along the direction close to or far away from the well wall, the first crawler belt 51 and the second crawler belt 61 are in friction fit with the well wall, and in the rotating process of the transmission worm 4, the first crawler-type running mechanism 5 and the second crawler-type running mechanism 6 can be in rolling contact with the well wall of the shallow ultra-long horizontal well.
As a preferred scheme of the embodiment, the tensioning mechanism 7 comprises a pushing oil cylinder 71, a first piston 72 and a second piston 73 are arranged in the pushing oil cylinder 71, when the pushing oil cylinder 71 rotates positively, liquid is injected into an inner cavity of the oil cylinder, so that one end of the first piston 72 far away from the second piston 73 and one end of the second piston 73 far away from the first piston 72 extend out of the pushing oil cylinder 71 respectively, when the pushing oil cylinder 71 rotates reversely, the hydraulic pump 79 can pump out liquid in the inner cavity, so that the first piston 72 and the second piston 73 can be retracted into the pushing oil cylinder 71, one end of the first piston 72 far away from the second piston 73 is connected with a first tensioning spring 74, the other end of the first tensioning spring 74 is connected with a first track support 76, one end of the second piston 73 far away from the first piston 72 is connected with a second tensioning spring 75, and the other end of the second tensioning spring 75 is connected with a second track support 77, in the embodiment, the first track support 76 and the second track support 77 are in mirror symmetry with the second track support 77, the first track support 76 and the second track support 77 can be in contact with the inner wall of the first track support 77 and the second track support 77 according to the actual conditions, so long as the first track support 76 and the second track support 77 can contact the inner wall and the outer wall of the first track support member and the second track support member 51 can contact the first track surface and the second track support member and the first track support member 76 and the second track member 61 under the actual conditions.
The first piston 72 and the second piston 73 form a containing cavity 78, the containing cavity 78 is communicated with a liquid inlet formed in the side wall of the pushing oil cylinder 71, the liquid inlet is connected with a hydraulic pump 79 through a pipeline, after the hydraulic pump 79 is started to flush liquid into the containing cavity 78, the first piston 72 can move radially along the driving worm 4 to drive the first crawler belt 51 to be close to the well wall, meanwhile, the second piston 73 can move radially along the driving worm 4 to drive the second crawler belt 61 to be close to the well wall, so that the first crawler belt 51 and the second crawler belt 61 are attached to the well wall, and the first crawler belt running mechanism 5 and the second crawler belt running mechanism 6 are prevented from slipping relative to the well wall due to irregular well wall, and the sleeve cannot be driven smoothly to move.
As a preferable scheme of the embodiment, the first crawler-type travelling mechanism 5 and the second crawler-type travelling mechanism 6 have the same structure and are arranged at two sides of the transmission worm 4 in a mirror symmetry manner.
As a preferable scheme of the embodiment, the first crawler running mechanism 5 comprises a first crawler wheel supporting frame 52, the first crawler 51 is wound on the first crawler wheel supporting frame 52, a plurality of first crawler wheels 53 which are in rolling contact with the first crawler 51 are arranged on the crawler wheel supporting frame 52, and at least part of the first crawler wheels 53 are abutted against the first crawler 51;
The second crawler belt type traveling mechanism 6 includes a second crawler belt wheel support 62, the second crawler belt 61 is wound on the second crawler belt wheel support 62, a plurality of second crawler belt wheels 63 in rolling contact with the second crawler belt 61 are arranged on the second crawler belt wheel support 62, and the second crawler belt wheels 63 are at least partially abutted against the second crawler belt 61.
As a preferable scheme of the embodiment, spiral teeth are formed on the outer wall of the driving worm 4, first track teeth 9 capable of being meshed with the spiral teeth are formed on the contact surface of the first track 51 and the driving worm 4, and when the driving worm 4 rotates, the first track 51 meshed with the first track can be driven to move.
As a preferable scheme of the embodiment, a second crawler belt tooth 10 which can be meshed with the spiral tooth is arranged on the contact surface of the second crawler belt 61 and the driving worm 4, when the driving worm 4 rotates, the second crawler belt 61 meshed with the driving worm can be driven to move, and in the rotating process, the first crawler belt running mechanism 5 and the second crawler belt running mechanism keep rolling friction with the well wall by virtue of the first crawler belt tooth 9 and the second crawler belt tooth 10.
As a preferred solution of this embodiment, the traction rod 8 is connected at one end to the stator 31 and at the other end to the first crawler running mechanism 5 or the second crawler running mechanism 6. The traction rod 8 is used for preventing the first crawler-type running mechanism 5 or the second crawler-type running mechanism 6 from being separated from the transmission screw 4.
As a preferable scheme of the embodiment, the front end of the driving worm 4 is also provided with a power conversion module 10 and a judgment decision module 11, and a pressure sensor is also arranged in the pushing oil cylinder 71;
the power conversion module 110 is respectively connected with the pressure sensor and the judgment decision module 11, and the power conversion module 12 can convert mechanical energy generated by rotation of the transmission worm 4 into electric energy and supply the generated electric energy to the pressure sensor and the judgment decision module 11;
the pressure sensor is in communication connection with the judgment decision module 11, and is used for collecting the pressure value in the pushing oil cylinder 71 and transmitting the collected pressure value to the judgment decision module 11;
The decision-making module 11 can compare the received pressure value with a preset pressure value and send a hydraulic pump start-stop instruction according to the comparison result.
Example 2
The ground super horizontal section long horizontal well for filling and exploiting a certain mine is vertical 500 meters, is influenced by the running of a sleeve, the horizontal section length is designed to be 500 meters, the hole depth is 1400 meters, and the working surface length is 2000 meters, if the prior art is adopted, 4 horizontal wells are needed to be constructed in sequence to cover the working surface length. The length of the horizontal section is designed to be 1000 meters, the hole depth is 1900, and the length of the working face can be covered by sequentially constructing 2 horizontal wells.
The embodiment discloses a method for using the shallow ultra-long horizontal well casing with the traction device provided by the embodiment 1, which comprises the following steps:
Step 1, selecting a drilling position according to a previous exploration result, then constructing a shallow ultra-long horizontal well, and performing well flushing operation after drilling is completed;
Step 2, the shallow overlength horizontal well casing with the traction device provided in the embodiment 1 is put into the shallow overlength horizontal well, so that the casing descends in a borehole under the action of dead weight, and the descending process of the casing is monitored on the ground,
When the friction resistance between the sleeve and the well wall is greater than or equal to the self weight of the sleeve, the sleeve is difficult to continue to descend, the well head hanging weight is 0 ton, at the moment, slurry is injected into the sleeve to start the traction mechanism, and the weight of the injected slurry is recorded in the grouting process;
in the embodiment, the self weight of the sleeve is G, liquid is pumped into the sleeve, the liquid gravity G 1 is generated in the sleeve, the traction device is started, the rotor drives the worm to start rotating, meanwhile, the first crawler type travelling mechanism and the second crawler type travelling mechanism are driven to move along the extending direction of the well bore, the friction traction force generated by the first crawler and the second crawler type travelling mechanism and the well wall is F 2, when G+G 1+F2＞F1(F1 is the friction resistance of the sleeve in the process of being placed in the sleeve), the suspended weight is larger than 0 ton, and the sleeve can be continuously placed in the sleeve;
Step 3, in the grouting process, the pressure sensor collects the pressure value in the pushing oil cylinder in real time, and when the pressure value in the pushing oil cylinder cavity calculated by the decision-making module is judged to be greater than or equal to the pressure value collected by the pressure sensor in real time, the hydraulic pump is started, liquid is pumped into the hydraulic pump, and the first crawler-type travelling mechanism and the second crawler-type travelling mechanism are pushed to move along the extending direction of the well bore;
The method specifically comprises the following steps:
the crawler belt required by the continuous running of the sleeve and the well wall generate friction traction force F 2,F2＝F1-G-G1
Calculating the oil cylinder thrust F 3,F3＝F2/F required by providing the traction force F 2, wherein F is the friction coefficient of the crawler belt and the well wall
Calculating a pressure value force P in a pushing cylinder cavity required for providing F 3, wherein F 3 =P.s, and S is the sectional area in the pushing cylinder cavity.
Comparing the calculated pressure value P in the pushing oil cylinder cavity with the pressure P 1 measured by the pressure sensor in the hydraulic cavity,
When P 1 is less than or equal to P, starting the hydraulic pump to act, pumping liquid into the hydraulic cavity, lifting the pressure P 1 in the hydraulic cavity to be greater than the calculated pressure P, pushing the oil cylinder, increasing the thrust F 3, increasing the friction traction force F 2 generated by the advancing track and the well wall, and enabling the G+G 1+F2＞F1 sleeve to be continuously put in.
When P 1 > P, the hydraulic pump does not need to be actuated.
Step 4, after the traction device reaches the bottom of the well, cementing slurry to complete well cementation
Compared with the existing method, in the embodiment, the drilling engineering quantity is reduced by 35.7%, the well site and construction are reduced by 50%, the pumping stations for filling are reduced by 50%, and the filling management construction and management personnel are reduced by 50%, so that the method has obvious technical and economic advantages.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination of the various embodiments of the present disclosure may be made without departing from the spirit of the present disclosure, which should also be considered as the subject matter of the invention of the present disclosure.
Claims (9)
1. The shallow overlength horizontal well casing with the traction device comprises a casing (1) and a traction mechanism (2) arranged at the front end of the casing (1), and is characterized in that the traction mechanism (2) comprises a power screw (3) and a transmission worm (4), and the power screw (3) comprises a stator (31) and a rotor (32) arranged in the stator (31);
the rear end of the transmission worm (4) is connected with the stator (31) and can rotate under the drive of the stator (31), the transmission worm (4) is connected with a first crawler-type travelling mechanism (5) and a second crawler-type travelling mechanism (6) in a meshed manner, and the first crawler-type travelling mechanism (5) and the second crawler-type travelling mechanism (6) can both move under the drive of the transmission worm (4);
The first crawler type travelling mechanism (5) and the second crawler type travelling mechanism (6) are respectively connected with the stator (31) through a traction rod (8), the first crawler type travelling mechanism (5) and the second crawler type travelling mechanism (6) are further connected through a tensioning mechanism (7), the tensioning mechanism (7) can radially stretch along a transmission worm (4) to push a first crawler (51) arranged in the first crawler type travelling mechanism (5) and a second crawler (61) arranged in the second crawler type travelling mechanism (6) to move along a direction approaching or far away from a well wall.
2. The shallow ultra-long horizontal well casing with the traction device according to claim 1, wherein the tensioning mechanism (7) comprises a pushing oil cylinder (71), a first piston (72) and a second piston (73) are arranged in the pushing oil cylinder (71), one end of the first piston (72) far away from the second piston (73) is connected with a first tensioning spring (74), the other end of the first tensioning spring (74) is connected with a first crawler support (76), one end of the second piston (73) far away from the first piston (72) is connected with a second tensioning spring (75), the other end of the second tensioning spring (75) is connected with a second crawler support (77), and the first crawler support (76) and the second crawler support (77) are arranged in a mirror symmetry mode;
The first piston (72) and the second piston (73) form a containing cavity (78), the containing cavity (78) is communicated with a liquid inlet formed in the side wall of the pushing oil cylinder (71), the liquid inlet is connected with a hydraulic pump (79) through a pipeline, the first piston (72) can move radially along the driving worm (4) under the driving of the hydraulic pump (79) to drive the first crawler belt (51) to be close to or far away from a well wall, and the second piston (73) can move radially along the driving worm (4) under the driving of the hydraulic pump (79) to drive the second crawler belt (61) to be close to or far away from the well wall.
3. Shallow ultra-long horizontal well casing with traction device according to claim 1, characterized in that the first crawler running mechanism (5) and the second crawler running mechanism (6) are identical in structure and are arranged at both sides of the transmission worm (4) in mirror symmetry.
4. The shallow ultra-long horizontal well casing with traction device according to claim 1, wherein the first crawler running mechanism (5) comprises a first crawler wheel supporting frame (52), the first crawler wheel (51) is wound on the first crawler wheel supporting frame (52), and a plurality of first crawler wheels (53) in rolling contact with the first crawler wheel (51) are arranged on the crawler wheel supporting frame (52);
The second crawler traveling mechanism (6) comprises a second crawler wheel supporting frame (62), the second crawler wheel (61) is wound on the second crawler wheel supporting frame (62), and a plurality of second crawler wheels (63) in rolling contact with the second crawler wheel (61) are arranged on the second crawler wheel supporting frame (62).
5. A shallow ultra-long horizontal well casing with a traction device according to claim 3, characterized in that the outer wall of the driving worm (4) is provided with spiral teeth, and the contact surface of the first crawler belt (51) and the driving worm (4) is provided with first crawler belt teeth (9) which can be meshed with the spiral teeth.
6. Shallow ultra-long horizontal well casing with traction device according to claim 5, characterized in that the contact surface of the second track (61) with the driving worm (4) is provided with second track teeth (10) capable of engaging with the helical teeth.
7. Shallow ultra-long horizontal well casing with traction device according to claim 1, characterized in that the traction rod (8) is connected to the stator (31) at one end and to the first crawler running gear (5) or the second crawler running gear (6) at the other end.
8. The shallow ultra-long horizontal well casing with the traction device according to claim 1, wherein the front end of the transmission worm (4) is further provided with a power conversion module (10) and a judgment decision module (11), and a pressure sensor is further arranged in the pushing oil cylinder (71);
the power conversion module (110) is respectively connected with the pressure sensor and the judgment and decision module (11), and the power conversion module (12) can convert mechanical energy generated by rotation of the transmission worm (4) into electric energy and supply the generated electric energy to the pressure sensor and the judgment and decision module (11);
The pressure sensor is in communication connection with the judgment decision module (11), and is used for collecting pressure values in the pushing oil cylinder (71) and transmitting the collected pressure values to the judgment decision module (11);
the judging and deciding module (11) can compare the received pressure value with a preset pressure value and send a hydraulic pump start-stop instruction according to the comparison result.
9. A method of using a shallow ultra-long horizontal well casing with a traction device, the method comprising the steps of:
Step 1, performing well flushing operation after drilling of a shallow ultra-long horizontal well;
Step 2, a shallow overlength horizontal well sleeve with a traction device according to any one of claims 1-8 is put into the shallow overlength horizontal well, so that the sleeve descends in a borehole under the action of dead weight;
Step 3, in the grouting process, the pressure sensor collects the pressure value in the pushing oil cylinder in real time, and when the pressure value in the pushing oil cylinder cavity calculated by the decision-making module is judged to be greater than or equal to the pressure value collected by the pressure sensor in real time, the hydraulic pump is started, liquid is pumped into the hydraulic pump, and the first crawler-type travelling mechanism and the second crawler-type travelling mechanism are pushed to move along the extending direction of the well bore;
And 4, after the traction device reaches the bottom of the well, cementing slurry to complete well cementation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510001806.0A CN119801423A (en) | 2025-01-02 | 2025-01-02 | A shallow ultra-long horizontal well casing with a traction device and a use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510001806.0A CN119801423A (en) | 2025-01-02 | 2025-01-02 | A shallow ultra-long horizontal well casing with a traction device and a use method thereof |
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| CN119801423A true CN119801423A (en) | 2025-04-11 |
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| CN106080821A (en) * | 2016-08-16 | 2016-11-09 | 徐工集团工程机械股份有限公司 | A kind of crawling traction transport vehicle and tensioner thereof |
| US20160362953A1 (en) * | 2014-11-26 | 2016-12-15 | Halliburton Energy Service, Inc. | Tractor traction control for cased hole |
| CN110656928A (en) * | 2019-09-06 | 2020-01-07 | 颜廷虎 | Tractor for horizontal well of oil field |
| CN216517788U (en) * | 2021-09-13 | 2022-05-13 | 海南银星振华智能装备有限公司 | Power transmission mechanism of crawler-type drilling machine |
| CN115628025A (en) * | 2022-12-21 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Downhole tractor and coiled tubing tool |
| CN118167299A (en) * | 2024-03-07 | 2024-06-11 | 山东大学 | Intelligent testing device and method for three-dimensional stress and crushing degree of surrounding rock drilling |
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2025
- 2025-01-02 CN CN202510001806.0A patent/CN119801423A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160362953A1 (en) * | 2014-11-26 | 2016-12-15 | Halliburton Energy Service, Inc. | Tractor traction control for cased hole |
| CN106080821A (en) * | 2016-08-16 | 2016-11-09 | 徐工集团工程机械股份有限公司 | A kind of crawling traction transport vehicle and tensioner thereof |
| CN110656928A (en) * | 2019-09-06 | 2020-01-07 | 颜廷虎 | Tractor for horizontal well of oil field |
| CN216517788U (en) * | 2021-09-13 | 2022-05-13 | 海南银星振华智能装备有限公司 | Power transmission mechanism of crawler-type drilling machine |
| CN115628025A (en) * | 2022-12-21 | 2023-01-20 | 中国石油集团川庆钻探工程有限公司 | Downhole tractor and coiled tubing tool |
| CN118167299A (en) * | 2024-03-07 | 2024-06-11 | 山东大学 | Intelligent testing device and method for three-dimensional stress and crushing degree of surrounding rock drilling |
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