Near-bit measuring nipple for petroleum drilling

Abstract

The utility model discloses a near-bit measuring pup joint for petroleum drilling, which comprises a pup joint body and a plurality of groups of near-bit measuring equipment, and the lower end of the pup joint body is provided with a telescopic protection component for stretching out or retracting the near-bit measuring equipment. The lower end of the telescopic protection assembly is provided with a closed protection assembly used for protecting the near-bit measurement equipment. According to the utility model, the telescopic protection assembly and the closed protection assembly are additionally arranged, and the near-bit measuring equipment is arranged in the short section body, so that the electric push rod operates during use, and the sealing plate, the equipment mounting seat and the near-bit measuring equipment are pushed out of the short section body for measurement and signal transmission; after measurement, the electric push rod retracts back to the piston rod, and the near-bit measuring equipment is retracted into the short joint body, so that the near-bit measuring equipment is prevented from being influenced by high temperature, impact, abrasion and the like, the near-bit measuring equipment is protected, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well mining machinery, in particular to a near-drill bit measuring short section for oil well drilling. Background Art

[0002] Oil is an important energy source used in the world. Oil is extracted through oil wells. During the drilling process, parameters such as temperature, humidity, pressure, and oil gas concentration in the well are always the parameters that drilling engineers pay attention to. How to quickly and accurately detect parameters such as temperature and pressure in the annulus is of great significance for safe and efficient drilling.

[0003] After searching, the Chinese patent document application number is CN201921235705.6. The utility model discloses a near-drill bit measuring short section for oil drilling, including a short section body, a drill collar connector group and a measuring sensor group, and the drill collar connector group is installed at the upper and lower ends of the short section body; the beneficial effects of the utility model are: the device is different from ordinary measuring short sections, specifically: the measuring sensors are arranged through orderly placement bins, and are targetedly protected by reinforcing ribs, so that after the device enters the oil well with the drill bit, the protruding reinforcing ribs are used for isolation and protection, effectively avoiding the sensor group from being affected by impact and friction, and increasing the accuracy of the device measurement; the measuring sensor group exchanges gas with the outside through the air permeable membrane on the sealing plate, avoiding the phenomenon of mud, well fluid, etc. entering the air holes of ordinary short sections, thereby protecting the internal structure of the device; the reinforcing ribs are assembled and fixed by connecting screws, so that its overall structure is more stable.

[0004] The measuring equipment on the existing near-drill-bit measuring sub is installed on the side wall of the measuring sub. However, when the near-drill-bit is drilling, friction will occur between the sub and the hole wall, which may cause the measuring equipment installed on the side wall of the measuring sub to be affected by high temperature, impact or wear, resulting in inaccurate detection results of the measuring equipment and even greatly reducing the service life of the measuring equipment. Therefore, we need to propose a near-drill-bit measuring sub for oil drilling to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a near-drill-bit measuring pup joint for oil drilling, which is added with a telescopic protection component and a sealed protection component. By installing a near-drill-bit measuring device in the pup joint body, an electric push rod is operated during use to push a sealing plate together with a device mounting seat and a near-drill-bit measuring device out of the pup joint body for measurement and signal transmission. After the measurement, the electric push rod retracts the piston rod and the near-drill-bit measuring device is retracted into the pup joint body to prevent the near-drill-bit measuring device from being affected by high temperature, impact, wear and the like, thereby protecting the near-drill-bit measuring device, thereby improving the practicability of the device and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a near-drill-bit measuring pup joint for oil drilling, comprising a pup joint body and a plurality of near-drill-bit measuring devices, a telescopic protective component for extending or retracting the near-drill-bit measuring device is installed at the lower end of the pup joint body, and a closed protective component for protecting the near-drill-bit measuring device is installed at the lower end of the telescopic protective component;

[0007] The telescopic protection assembly includes an electric push rod, a device mounting seat is fixed on the piston rod of the electric push rod, and multiple groups of near-drill-bit measuring devices are mounted on the upper end of the device mounting seat;

[0008] The sealed protection component includes a sealing plate, the lower end of the equipment mounting seat is fixed on the upper surface of the sealing plate, a first sealing rubber ring is attached to the sealing plate, and the sealing plate is sealed and connected to the lower end of the short section body through the first sealing rubber ring.

[0009] Preferably, a partition is installed in the short section body, and the base of the electric push rod is fixed on the lower surface of the partition.

[0010] Preferably, a plurality of columns are fixed to the lower surface of the partition, an isolation cover is fixed to the lower ends of the plurality of columns, a second sealing rubber ring is attached to the lower end of the isolation cover, and the equipment mounting seat is sealed and connected to the isolation cover via the second sealing rubber ring.

[0011] Preferably, a through hole is formed on the isolation cover, and the piston rod of the electric push rod is slidably connected to the through hole.

[0012] Preferably, a lock sleeve is embedded in the lower end of the short section body, an electronic lock is installed on the upper end of the sealing plate, and a lock tongue of the electronic lock passes through a first sealing rubber ring and is used in conjunction with the lock sleeve.

[0013] Preferably, a drill collar connection seat is integrally formed at the upper end of the short section body, the inner wall of the drill collar connection seat is threaded, and a drill collar connection head is integrally formed at the lower end of the sealing plate, the outer wall of the drill collar connection head is threaded.

[0014] Preferably, a limiting slide groove is provided on the inner wall of the short section body, and the length of the limiting slide groove is greater than the extension length of the electric push rod.

[0015] Preferably, a limiting sliding column is fixed on the upper surface of the sealing plate, the limiting sliding column is used in conjunction with a limiting sliding groove, and the sealing plate is slidably connected to the short section body through the limiting sliding column and the limiting sliding groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model adds a design of a telescopic protection component and a sealed protection component, and installs a near-drill-bit measuring device in a short section body. When in use, an electric push rod is operated to push a sealing plate together with a device mounting seat and a near-drill-bit measuring device out of the short section body for measurement and signal transmission. After the measurement, the electric push rod retracts the piston rod, and the near-drill-bit measuring device is retracted into the short section body, so as to prevent the near-drill-bit measuring device from being affected by high temperature, impact, wear and the like, thereby protecting the near-drill-bit measuring device and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the sealing protection component of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the telescopic protection component of the utility model.

[0021] In the figure: 100, short section body; 110, drill collar connecting seat; 120, drill collar connecting head; 130, partition; 140, limit slide groove; 150, locking sleeve; 200, telescopic protection assembly; 201, equipment mounting seat; 202, electric push rod; 203, column; 204, isolation cover; 205, through hole; 206, second sealing rubber ring; 300, closed protection assembly; 301, sealing plate; 302, first sealing rubber ring; 303, electronic lock; 304, limit slide column; 400, near drill bit measuring equipment. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a near-drill-bit measuring pup joint for oil drilling, comprising a pup joint body 100 and a plurality of near-drill-bit measuring devices 400, a telescopic protection component 200 for extending or retracting the near-drill-bit measuring devices 400 is installed at the lower end of the pup joint body 100, and a closed protection component 300 for protecting the near-drill-bit measuring devices 400 is installed at the lower end of the telescopic protection component 200;

[0024] The telescopic protection assembly 200 includes an electric push rod 202, a piston rod of the electric push rod 202 is fixed with an equipment mounting seat 201, and a plurality of groups of near-drill-bit measuring devices 400 are all mounted on the upper end of the equipment mounting seat 201;

[0025] The sealed protection assembly 300 includes a sealing plate 301. The lower end of the equipment mounting seat 201 is fixed to the upper surface of the sealing plate 301. A first sealing rubber ring 302 is attached to the sealing plate 301. The sealing plate 301 is sealed and connected to the lower end of the short section body 100 through the first sealing rubber ring 302.

[0026] By installing the near-drill-bit measuring device 400 in the short section body 100, the electric push rod 202 is operated during use, and the sealing plate 301 together with the device mounting base 201 and the near-drill-bit measuring device 400 are pushed out of the short section body 100 for measurement and signal transmission. After the measurement, the electric push rod 202 retracts the piston rod, and the near-drill-bit measuring device 400 is retracted into the short section body 100 to prevent the near-drill-bit measuring device 400 from being affected by high temperature, impact, wear, etc., thereby protecting the near-drill-bit measuring device 400 and improving the practicality of the device.

[0027] A partition 130 is installed in the short section body 100 to isolate an independent space in the short section body 100 , which can be used as a battery compartment, a signal transmission compartment, etc. The base of the electric push rod 202 is fixed on the lower surface of the partition 130 .

[0028] A plurality of columns 203 are fixed to the lower surface of the partition 130, an isolation cover 204 is fixed to the lower end of the plurality of columns 203, a second sealing rubber ring 206 is fitted to the lower end of the isolation cover 204, and the equipment mounting seat 201 is sealed and connected to the isolation cover 204 via the second sealing rubber ring 206, so as to provide a second isolation protection for the near-drill-bit measuring device 400 when the near-drill-bit measuring device 400 is retracted into the short section body 100, thereby improving the protection performance of the device for the near-drill-bit measuring device 400.

[0029] A through hole 205 is formed on the isolation cover 204 , and the piston rod of the electric push rod 202 is slidably connected to the through hole 205 , so that the piston rod of the electric push rod 202 can pass through the through hole 205 to push or pull back the sealing plate 301 .

[0030] A locking sleeve 150 is embedded in the lower end of the short section body 100, and an electronic lock 303 is installed on the upper end of the sealing plate 301. The lock tongue of the electronic lock 303 passes through the first sealing rubber ring 302 and is used in conjunction with the locking sleeve 150 to facilitate locking the sealing plate 301 and the short section body 100 to prevent the sealing plate 301 and the short section body 100 from slipping when the short section body 100 rotates.

[0031] A drill collar connector 110 is integrally formed at the upper end of the short section body 100, and the inner wall of the drill collar connector 110 is threaded. A drill collar connector 120 is integrally formed at the lower end of the sealing plate 301, and the outer wall of the drill collar connector 120 is threaded. When in use, the short section body 100 is installed on the drill collar structure of the drill bit through the drill collar connector 110 at the upper end and the drill collar connector 120 at the lower end, so that the device is stably installed and enters the oil well along with the drill bit.

[0032] A limit slot 140 is provided on the inner wall of the short section body 100 , and the length of the limit slot 140 is greater than the extension length of the electric push rod 202 ;

[0033] A limiting slide post 304 is fixed on the upper surface of the sealing plate 301, and the limiting slide post 304 is used in conjunction with the limiting slide groove 140. The sealing plate 301 is slidably connected to the short section body 100 through the limiting slide post 304 and the limiting slide groove 140, so that when the electric push rod 202 is operated to push out the near-drill bit measuring device 400, the sealing plate 301 can be moved in a directional manner to prevent it from path deviation, rotation, etc. during movement.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A near-drill-bit measuring sub for oil drilling, characterized in that: include: A short section body (100) and a plurality of sets of near-drill-bit measuring devices (400); A telescopic protection assembly (200) for extending or retracting a near-drill-bit measuring device (400) is installed at the lower end of the short section body (100); A sealed protection component (300) for protecting a near-drill-bit measuring device (400) is installed at the lower end of the telescopic protection component (200).

2. The near-drill-bit measuring sub for oil drilling according to claim 1, characterized in that: The telescopic protection assembly (200) comprises an electric push rod (202), a piston rod of the electric push rod (202) is fixed with an equipment mounting seat (201), and a plurality of groups of near-drill-bit measuring devices (400) are all mounted on the upper end of the equipment mounting seat (201).

3. The near-drill-bit measuring sub for oil drilling according to claim 2, characterized in that: The sealed protection assembly (300) comprises a sealing plate (301), the lower end of the equipment mounting seat (201) is fixed to the upper surface of the sealing plate (301), a first sealing rubber ring (302) is attached to the sealing plate (301), and the sealing plate (301) is sealedly connected to the lower end of the short section body (100) via the first sealing rubber ring (302).

4. The near-drill-bit measuring sub for oil drilling according to claim 3, characterized in that: A partition plate (130) is installed in the short section body (100), and the base of the electric push rod (202) is fixed on the lower surface of the partition plate (130).

5. The near-drill-bit measuring sub for oil drilling according to claim 4, characterized in that: A plurality of columns (203) are fixed to the lower surface of the partition (130), an isolation cover (204) is fixed to the lower ends of the plurality of columns (203), a second sealing rubber ring (206) is fitted to the lower end of the isolation cover (204), and the equipment mounting seat (201) is sealedly connected to the isolation cover (204) via the second sealing rubber ring (206).

6. The near-drill-bit measuring sub for oil drilling according to claim 5, characterized in that: The isolation cover (204) is provided with a through hole (205), and the piston rod of the electric push rod (202) is slidably connected to the through hole (205).

7. The near-drill-bit measuring sub for oil drilling according to claim 6, characterized in that: A lock sleeve (150) is embedded at the lower end of the short section body (100), an electronic lock (303) is installed at the upper end of the sealing plate (301), and a lock tongue of the electronic lock (303) passes through a first sealing rubber ring (302) and is used in conjunction with the lock sleeve (150).

8. The near-drill-bit measuring sub for oil drilling according to claim 7, characterized in that: The upper end of the short section body (100) is integrally formed with a drill collar connection seat (110), the inner wall of which is threaded, and the lower end of the sealing plate (301) is integrally formed with a drill collar connection head (120), the outer wall of which is threaded.

9. The near-drill-bit measuring sub for oil drilling according to claim 8, characterized in that: A limiting sliding groove (140) is provided on the inner wall of the short section body (100), and the length of the limiting sliding groove (140) is greater than the extension length of the electric push rod (202).

10. The near-drill-bit measuring sub for oil drilling according to claim 9, characterized in that: A limiting sliding post (304) is fixed on the upper surface of the sealing plate (301), and the limiting sliding post (304) is used in conjunction with the limiting sliding groove (140). The sealing plate (301) is slidably connected to the short section body (100) via the limiting sliding post (304) and the limiting sliding groove (140).

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