CN215979206U - A steering short section of a rotary steerable drilling tool - Google Patents
A steering short section of a rotary steerable drilling tool Download PDFInfo
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- CN215979206U CN215979206U CN202121401517.3U CN202121401517U CN215979206U CN 215979206 U CN215979206 U CN 215979206U CN 202121401517 U CN202121401517 U CN 202121401517U CN 215979206 U CN215979206 U CN 215979206U
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- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 11
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of oil exploitation, and particularly relates to a guide short section of a rotary guide drilling tool, which comprises a drill rod, a rotary guide drilling tool body, a drill bit, a measurement and control module and a guide short section; the drill rod is connected with the rotary guide drilling tool body, a steering motor is installed in the rotary guide short section, a steering motor rotor is connected with the rotary table, the other end of the rotary table is connected with a guide short section mandrel through a ball hinge, a guide short section shell is connected with the rotary guide drilling tool body shell, the other end of the guide short section mandrel is connected with the drill bit, the structure is reasonable, the drive shaft and the rotary guide control motor can be coupled, the structure is simple, and the drill rod has high popularization value.
Description
Technical Field
The utility model relates to the technical field of oil exploitation, in particular to a guide short section of a rotary guide drilling tool.
Background
In the directional well operation in the oil exploitation process, in order to control the drilling direction of a drill bit, the directional drilling operations such as increasing the inclination, reducing the inclination, twisting the azimuth and the like need to be carried out in the construction according to the well track design scheme. Typically, guided drilling operations are performed using MWD in conjunction with a drilling motor. In the process of the guided drilling operation, the whole drilling tool cannot rotate, and the transmission mechanism and the well wall mostly have static friction, so that the pressure of the drill bit is often removed, the drilling speed is seriously influenced, and the drilling cost is increased. And the drilling tool is stuck more seriously, the whole drilling tool cannot be taken out, the well is scrapped, and the economic loss is serious.
Against this background, rotary steerable drilling systems have been developed, which essentially comprise a drilling machine arranged above the oil well and a rotary steerable drilling tool arranged below for drilling, the drilling machine being in driving connection with a drill bit shaft on the rotary steerable drilling tool via a flexible drive shaft, so that a torque is transmitted to the drill bit shaft, which drives the drill bit to drill. The tool controls the direction of movement of the drill bit during drilling.
Technical personnel in the field of rotary steerable drilling have designed various mechanical structures and control schemes to allow the drill bit to achieve the required motion trajectory. Typically, there are three ways, namely, a push-type rotary steering tool, a directional rotary steering tool, and a compound rotary steering tool. The utility model provides a mechanical structure of a guide short section in a pointing type rotary guide drilling tool motor constant speed reversal control mode, which can couple the motion of a driving shaft and a rotary guide control motor so as to solve the problems in the background technology.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
Therefore, the utility model aims to provide a guide short section of a rotary guide drilling tool, which can couple the movement of a driving shaft and a rotary guide control motor, has a simple structure and has extremely high popularization value.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a guide short section of a rotary guide drilling tool comprises a drill rod, a rotary guide drilling tool body, a drill bit, a measurement and control module and a guide short section;
the drill rod is connected with a rotary guide drilling tool body, a steering motor stator and a steering motor rotor are installed in the rotary guide short section, the steering motor rotor is connected with a rotary table, the other end of the rotary table is connected with a guide short section mandrel through a ball hinge, a guide short section shell is connected with a rotary guide drilling tool body shell, and the other end of the guide short section mandrel is connected with a drill bit;
the measuring and controlling module comprises a rotating speed sensor for detecting the rotating speed of the rotary steering drilling tool body and a controller for controlling the rotating speed of the steering motor rotor, and the rotating speed sensor is electrically connected with the controller;
a fixing bolt hole is formed in the guide short section shell, and a steering motor stator is fixed in the guide short section shell; the guide nipple shell is internally provided with a groove for installing a guide rail, the guide rail is provided with a sliding block, the sliding block is hinged with a connecting plate, and the connecting plate is hinged with a guide nipple mandrel.
As a preferable scheme of the guide short joint of the rotary guide drilling tool, the guide short joint comprises: and the hinge of the connecting plate and the guide short section mandrel has sufficient movement space.
As a preferable scheme of the guide short joint of the rotary guide drilling tool, the guide short joint comprises: the guiding short section shell, the steering motor stator, the steering motor rotor, the rotary table, the guiding short section mandrel, the sliding block, the guide rail and the connecting plate are made of high-strength alloy steel.
Compared with the prior art, the utility model has the beneficial effects that:
1. the rotary guide drilling tool guide short section is reasonable in design, simple in structure and high in popularization value.
2. When the rotary steering drilling tool drills in a rotating mode, the drill rod rotates clockwise, the rotary steering drilling tool body detects the rotating speed of the rotary steering drilling tool body through the rotating speed sensor, and the control module controls the steering motor to rotate anticlockwise at a speed lower than that of the drill rod. At the moment, the guide short joint transmits the composite motion to the drill bit, an included angle exists between the central line of the drill bit and the central line of the rotary guide drilling tool, the drill bit rotates clockwise (autorotation) around the central axis of the drill bit, and simultaneously rotates clockwise (revolution) around the central axis of the rotary guide drilling tool, so that rotary drilling is completed.
3. When the rotary steering drilling tool is used for steering drilling, the drill rod rotates clockwise, the rotary steering drilling tool body detects the rotating speed of the rotary steering drilling tool body through the rotating speed sensor, and the control module controls the steering motor to rotate anticlockwise at the same speed. At the moment, the guide short joint transmits the composite operation to the drill bit, an included angle exists between the central line of the drill bit and the central line of the rotary guide drilling tool, the drill bit rotates clockwise (autorotation) around the central axis of the drill bit, and the central axis of the drill bit is fixed relative to the ground direction, so that the guide drilling is completed.
4. The rotary steering drilling tool is used for guiding the pup joint underground, so that the bit pressure and the torque of the drill collar or the drill rod can be transmitted to the drill bit no matter in a rotary drilling state or a directional drilling state, the rotating speed is accelerated, the drilling cost is reduced, and the drilling jamming probability is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
fig. 1 is a schematic view of a mounting structure according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a gimbal device according to an embodiment of the present invention.
FIG. 3 is a schematic view of the assembly of the gimbal block and the connecting plate according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of the motion described in one embodiment of the present invention.
In the figure; 1-a drill rod; 2-rotating and guiding the drilling tool body; 3-a drill bit; 4-a measurement and control module; 5-guiding short section; 51-a guide nipple outer sleeve; 52-steering motor stator; 53-steering motor rotor; 54-a turntable; 55-guiding a short section mandrel; 56-a slide block; 57-a guide rail; 58-connecting plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides the following technical scheme: a guide short section of a rotary guide drilling tool comprises a drill rod 1, a rotary guide drilling tool body 2, a drill bit 3, a measurement and control module 4 and a guide short section 5;
the drill rod 1 is connected with a rotary steering drilling tool body 2, a steering motor stator 52 and a steering motor rotor 53 are installed in the rotary steering nipple 5, the steering motor rotor 53 is connected with a turntable 54, the other end of the turntable 54 is connected with a steering nipple mandrel 55 through a ball hinge, a steering nipple shell 51 is connected with a shell of the rotary steering drilling tool body 2, and the other end of the steering nipple mandrel 55 is connected with a drill bit 3;
the measurement and control module 4 comprises a rotation speed sensor for detecting the rotation speed of the rotary steering drilling tool body 2 and a controller for controlling the rotation speed of the steering motor rotor 53, and the rotation speed sensor is electrically connected with the controller;
wherein, the guide short section shell 51 is internally provided with a fixing bolt hole for fixing the steering motor stator 52 inside; the guide short section shell 51 is internally provided with a groove for installing a guide rail 57, the guide rail 57 is provided with a sliding block 56, the sliding block 56 is connected with a connecting plate 58 through a hinge, and the connecting plate 58 is connected with a guide short section mandrel 55 through a hinge.
Specifically, the joint of the connecting plate 58 and the guide nipple mandrel 55 has sufficient movement space.
Specifically, the guiding nipple shell 51, the steering motor stator 52, the steering motor rotor 53, the turntable 54, the guiding nipple mandrel 55, the slider 56, the guide rail 57 and the connecting plate 58 are made of high-strength alloy steel.
The working principle is as follows: and when viewed from the ground, the motion state of the drilling tool. O1 is the axis of rotation of the drill collar, and O2 is the axis of rotation of the drill bit. ω 1 represents the rotational angular velocity of the drill collar, ω 3 represents the rotational angular velocity of the drill bit, and ω 2 represents the angular velocity of the rotation axis O2 of the drill bit revolving around O1.
When the rotary steering drilling tool drills in a rotating mode, the drill rod 1 rotates clockwise, the rotary steering drilling tool body 2 is driven to rotate, and the steering nipple 5 and the drill bit 3 rotate along with the rotary steering drilling tool body 2. The rotary steering drilling tool body 2 detects the self rotating speed omega 1 through a rotating speed sensor, and the control module 4 controls the steering motor to rotate anticlockwise at a speed lower than that of the drill rod 1 (omega motor < omega 1). The drill head 3 is in a compound motion state, that is, the drill head 3 rotates clockwise around its central axis (ω 1 ═ ω 3), and simultaneously rotates clockwise around the central axis of the rotary steerable drilling tool 2 (0 ═ ω 2 ═ ω 1- ω motor).
When the rotary guide drilling tool is guided to drill, the drill rod 1 rotates clockwise to drive the rotary guide drilling tool body 2 to rotate, and the guide short section 5 and the drill bit 3 rotate along with the rotary guide drilling tool body 2. The rotary steering drilling tool body 2 detects the rotation speed omega 1 of the rotary steering drilling tool body through a rotation speed sensor, and the control module 4 controls the steering motor 5 to rotate anticlockwise at the speed equal to that of the drill rod 1 (omega motor is omega 1). The drill head 3 is then in a moving state, i.e. the drill head 3 is rotated clockwise around its central axis (ω 1 ═ ω 3) while being stationary relative to the central axis of the drill (ω 2 ═ 0).
The use of a rotary steerable tool guide sub downhole allows the rotational torque of the drill bit 3 to be provided by the drill pipe 1. The drilling direction of the drill bit 3 is controlled by a steering motor, and the method accelerates the drilling speed, reduces the drilling cost and further reduces the probability of drill sticking.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401517.3U CN215979206U (en) | 2021-06-23 | 2021-06-23 | A steering short section of a rotary steerable drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401517.3U CN215979206U (en) | 2021-06-23 | 2021-06-23 | A steering short section of a rotary steerable drilling tool |
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| Publication Number | Publication Date |
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| CN215979206U true CN215979206U (en) | 2022-03-08 |
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| CN202121401517.3U Active CN215979206U (en) | 2021-06-23 | 2021-06-23 | A steering short section of a rotary steerable drilling tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216844A (en) * | 2021-06-23 | 2021-08-06 | 西安石油大学 | Guide nipple of rotary guide drilling tool |
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2021
- 2021-06-23 CN CN202121401517.3U patent/CN215979206U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216844A (en) * | 2021-06-23 | 2021-08-06 | 西安石油大学 | Guide nipple of rotary guide drilling tool |
| CN113216844B (en) * | 2021-06-23 | 2025-01-28 | 西安石油大学 | A guide sub for a rotary guide drilling tool |
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