CN217106821U

CN217106821U - Rotary guide drilling tool

Info

Publication number: CN217106821U
Application number: CN202122118225.5U
Authority: CN
Inventors: 江冰
Original assignee: Chongqing Chengde Energy Service Co ltd
Current assignee: Chongqing Chengde Energy Service Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-08-02
Anticipated expiration: 2031-09-03

Abstract

The utility model relates to a rotatory steering drilling tool, including planetary mechanism and guide cylinder, planetary mechanism includes a plurality of motors, installed part and a plurality of drive gear, the motor with the drive gear one-to-one, the output of motor runs through the installed part with drive gear connects, the guide cylinder is hollow and eccentric, the upper end of guide cylinder is provided with the external gear dish, the installed part sets up the upper end of guide cylinder, the installed part with guide cylinder upper end activity butt, drive gear with the external gear dish meshing. The utility model discloses set up eccentric guide cylinder, and the guide cylinder uses planetary mechanism to adjust the position, utilizes eccentric guide cylinder to support and lean on the well head or support a lateral wall, provides the holding power of a side direction, prevents that the drilling string from playing the effect of initiatively rectifying in well drilling in-process off tracking, can prevent that the guide cylinder is taken partially by the drilling rod, ensures that the drilling rod is advanced according to predetermineeing the direction.

Description

Rotary guide drilling tool

Technical Field

The utility model relates to a drilling equipment technical field especially relates to a rotary steering drilling tool.

Background

In order to meet the development requirements of exploration and development of oil and gas resources, particularly ocean oil and gas resources, drilling of special process wells such as ultra-deep wells, highly difficult directional wells, cluster wells, horizontal wells, extended reach wells, branch wells, three-dimensional complex structure wells and the like in complex oil and gas reservoirs in the later period of an oil field, and simultaneously meet the development requirements of closed-loop automatic drilling, a rotary steering drilling tool with a high build slope is urgently needed.

Rotary steerable drilling tools are currently the most advanced drilling systems. The system can control the drilling direction while the drill string rotates to drill. In a rotary drilling system, there is a very important component, the imbalance corrector. The imbalance corrector does not rotate as the drill string rotates. When the drill stem is inclined, the deviation is corrected through the deviation correction device. However, the existing imbalance correction device is usually of a passive mechanical structure, such as CN201310351855.4, and uses an inner ring of an eccentric bearing, after the drill string is tilted, the eccentric bearing is driven to rotate, so as to push the drill bit to contact with the downhole wall or/and the drill bit to be tilted downward, the tubular mandrel rotates and transmits the bit pressure, and the drill bit is driven to drill, so as to achieve inclination reduction. The mode is called as a passive deviation rectifying structure in the industry, but the mode has a problem that the deviation rectifying speed of a drill rod is low, and the drilling efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, a rotary steering drilling tool is needed to be provided for the condition that the existing drill rod is low in deviation rectifying speed and affects the drilling efficiency.

A rotary guide drilling tool comprises a planetary mechanism and a guide cylinder, wherein the planetary mechanism comprises a plurality of motors, an installation part and a plurality of transmission gears, the motors correspond to the transmission gears one by one, the output end of each motor penetrates through the installation part to be connected with the transmission gears, the guide cylinder is hollow and eccentric, an outer gear disc is arranged at the upper end of the guide cylinder, the installation part is movably abutted against the upper end of the guide cylinder, and the transmission gears are meshed with the outer gear disc.

Preferably, the mounting piece comprises a sealing plate, a through pipe and three support legs, the support legs surround the through pipe and are arranged uniformly, the motor is mounted at the end part of the support legs, the output end of the motor sequentially penetrates through the support legs and the sealing plate and is connected with the transmission gear, and the through pipe is communicated with the guide cylinder coaxially.

Preferably, a circular tube-shaped sleeve is arranged at the upper end of the guide cylinder, the outer gear disc is arranged on the outer side of the sleeve, and the sealing plate is movably abutted to the end part of the sleeve.

Preferably, a groove is formed in the end portion of the sleeve, a ball disc is mounted in the groove, and the sleeve is movably abutted to the sealing plate through the ball disc.

The utility model discloses an useful part lies in: the eccentric guide cylinder is arranged, the guide cylinder uses the planetary mechanism to adjust the position, the eccentric guide cylinder is abutted against the well mouth or the side wall of the support cylinder, a lateral supporting force is provided, the deviation of the drill string in the drilling process is prevented, the active deviation rectifying effect is achieved, the guide cylinder can be prevented from being deviated by the drill rod, and the drill rod is ensured to advance according to the preset direction.

Drawings

FIG. 1 is a schematic perspective view of a rotary steerable drilling tool according to one embodiment;

FIG. 2 is a schematic side view of a rotary steerable drilling tool;

FIG. 3 is an exploded view of a rotary steerable drilling tool.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, a rotary steerable drilling tool includes a planetary mechanism 1 and a steering cylinder 2, the planetary mechanism 1 includes a plurality of motors 11, a mounting member 12 and a plurality of transmission gears 13, the motors 11 correspond to the transmission gears 13 one by one, an output end of the motor 11 penetrates through the mounting member 12 and is connected with the transmission gears 13, the steering cylinder 2 is hollow and eccentric, an external gear disc 21 is disposed at an upper end of the steering cylinder 2, the mounting member 12 is disposed at the upper end of the steering cylinder 2, the mounting member 12 is movably abutted against the upper end of the steering cylinder 2, and the transmission gears 13 are engaged with the external gear disc 21. Specifically, in this embodiment, during the use, at first install guide cylinder 2 in well head department, when making things convenient for the trouble, the staff overhauls at the well limit, and it is convenient to maintain. Wherein, planetary mechanism 1 includes three motor 11, installed part 12 and a plurality of drive gear 13, installed part 12 is fixed through support body or other device of well head department, three motor 11 is installed in one side that installed part 12 kept away from guide cylinder 2, the output of motor 11 runs through installed part 12 and is connected with three drive gear 13, when motor 11 begins work, it is rotatory to drive gear 13, because drive gear 13 is meshed with the external gear dish 21 of 2 upper ends of guide cylinder, consequently, make guide cylinder 2 synchronous rotation, the angular position of 2 eccentric one sides of adjustment guide cylinder. Concrete control flow is as follows, after backstage controller arrived drilling rod (not shown in the figure) skew through the slope sensor perception, three motors 11 work can be controlled to the controller, drive gear 13 and rotate, make eccentric guide cylinder 2 rotate to slope one side in step, can utilize the lateral wall of the 2 thick one sides of eccentric guide cylinder to support and lean on the wall of a well, provide the holding power for the drilling rod of pegging graft in guide cylinder 2, prevent its further slope, and then play the effect of the drilling rod of initiatively rectifying, it is fast to rectify, high efficiency.

As shown in fig. 1 to 3, the mounting member 12 includes a sealing plate 121, a through pipe 122 and three support legs 123, the three support legs 123 are uniformly arranged around the through pipe 122, the motor 11 is mounted at an end of the support leg 123, an output end of the motor 11 sequentially penetrates through the support leg 123 and the sealing plate 121 to be connected with the transmission gear 13, and the through pipe 122 is coaxially communicated with the guide cylinder 2. Specifically, in this embodiment, use the closing plate 121 to set up at the tip of guide cylinder 2, play sealed effect, prevent debris such as clod from dropping into in the well, be provided with a siphunculus 122 on the closing plate 121, the drilling rod of being convenient for inserts into, fixes a position for the drilling rod. The three support legs 123 are vertically connected with the through pipe 122, and a preset mounting position is raised for the motor 11 by using the support legs 123, so that the motor 11 is prevented from being mounted in a misplacement manner. The output end of the motor 11 penetrates through the support leg 123 and the sealing plate 121, and then is connected with the transmission gear 13, so that the transmission gear 13 can be driven to rotate.

As shown in fig. 1 to 3, a circular tubular sleeve 22 is provided at the upper end of the guide cylinder 2, the external gear plate 21 is provided outside the sleeve 22, and the seal plate 121 is in movable contact with the end of the sleeve 22. Specifically, in the present embodiment, the sleeve 22 is disposed at the upper end of the guide cylinder 2, so that the external gear plate 21 can be disposed outside the sleeve 22, and the transmission gear 13 is engaged with the external gear plate 21 for transmission because the sleeve 22 and the through pipe 122 are coaxial.

As shown in fig. 3, a groove 221 is formed at an end of the sleeve 22, a ball disk 23 is mounted in the groove 221, and the sleeve 22 is movably abutted to the sealing plate 121 through the ball disk 23. Specifically, a groove 221 is provided at the end of the sleeve 22 for receiving the ball disk 23. When the sealing plate 121 is fixed at the wellhead, the resistance between the sealing plate 121 and the guide cylinder 2 is smaller when the motor 11 drives the guide cylinder 2 to rotate through the transmission gear 13.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A rotary steerable drilling tool, comprising: including planetary mechanism and guide cylinder, planetary mechanism includes a plurality of motors, installed part and a plurality of drive gear, the motor with drive gear one-to-one, the output of motor runs through the installed part with drive gear connects, the guide cylinder is hollow and eccentric, the upper end of guide cylinder is provided with outer gear disc, the installed part sets up the upper end of guide cylinder, the installed part with guide cylinder upper end activity butt, drive gear with outer gear disc meshing.

2. A rotary steerable drilling tool as in claim 1, wherein: the mounting piece comprises a sealing plate, a through pipe and three support legs, the support legs surround the through pipe and are arranged evenly, the motor is mounted at the end parts of the support legs, the output end of the motor sequentially penetrates through the support legs and the sealing plate and is connected with the transmission gear, and the through pipe is communicated with the guide cylinder coaxially.

3. A rotary steerable drilling tool as in claim 2, wherein: the upper end of the guide cylinder is provided with a circular tube-shaped sleeve, the outer gear disc is arranged on the outer side of the sleeve, and the sealing plate is movably abutted to the end part of the sleeve.

4. A rotary steerable drilling tool as in claim 3, wherein: the end part of the sleeve is provided with a groove, a ball disc is installed in the groove, and the sleeve is movably abutted to the sealing plate through the ball disc.