阅读说明：本技术 一种钻刮通洗一体化工具 (Drilling, scraping, passing and washing integrated tool ) 是由 王建斌 张国锋 彭小平 刘俊君 邢书超 于 2020-08-26 设计创作，主要内容包括：本发明涉及一种钻刮通洗一体化工具,包括顺序连接的钻杆、通径规、液压刮壁装置和滑套开关,所述滑套开关的底端与双母接头固定连接,所述双母接头的底端固定连接有钻头。本发明有效解决了现有钻刮通洗工具设计管串较长,接头较多,工作效率较低,井下作业风险较大以及刮壁装置结构设计存在缺陷,影响工作效率的问题。(The invention relates to a drilling, scraping, passing and washing integrated tool which comprises a drill rod, a drift diameter gauge, a hydraulic wall scraping device and a sliding sleeve switch, wherein the drill rod, the drift diameter gauge, the hydraulic wall scraping device and the sliding sleeve switch are sequentially connected, the bottom end of the sliding sleeve switch is fixedly connected with a double female joint, and a drill bit is fixedly connected to the bottom end of the double female joint. The invention effectively solves the problems that the prior drilling, scraping and through-washing tool has longer pipe string, more joints, lower working efficiency, higher risk of underground operation and the structural design of the wall scraping device has defects and influences the working efficiency.)

1. The utility model provides a bore and scrape logical integration instrument that washes, its characterized in that scrapes wall device (3) and sliding sleeve switch (4) including drilling rod (1), drift diameter rule (2), hydraulic pressure that the order is connected, the bottom and two female joint (5) fixed connection of sliding sleeve switch (4), the bottom fixedly connected with drill bit (6) of two female joint (5).

2. The drilling, scraping, passing and washing integrated tool according to claim 1, wherein the hydraulic wall scraping device (3) comprises a mounting shell (301), an inner diameter pipe (302) is arranged at the center of the mounting shell (301), a mounting groove (303) is arranged on the side wall of the mounting shell (301), and a wall scraping mechanism (304) is mounted in the mounting groove (303).

3. The drilling, scraping, passing and washing integrated tool is characterized in that an internal thread is arranged on the inner wall of the top end of the inner drift diameter pipe (302), and the drift diameter gauge (2) is fixedly connected with the thread of the mounting shell (301) through a threaded joint and the internal thread.

4. The drilling, scraping, passing and washing integrated tool according to claim 2, wherein the wall scraping mechanism (304) comprises a wall scraping block (3041), a shearing pin (3044) and a fixing screw (3045), two ends of the wall scraping block (3041) are fixedly connected with a connecting block (3042), a through hole (3043) is arranged on the connecting block (3042), the shearing pin (3044) is fixedly connected to the mounting shell (301), and the fixing screw (3045) penetrates through the through hole (3043) and is in threaded connection with the shearing pin (3044); the back of the wall scraping block (3041) is fixedly connected with a connecting spring (3046), one end, far away from the wall scraping block (3041), of the connecting spring (3046) is fixedly connected to an installation shell (301), the back of the wall scraping block (3041) is also fixedly connected with a pressure bearing plug (3047), and a through hole matched with the pressure bearing plug (3047) is formed in the installation shell (1).

5. The drilling, scraping, passing and washing integrated tool is characterized in that a threaded joint is fixedly connected to the bottom end of the drift diameter gauge (2), and a cavity is formed in the drift diameter gauge (2).

6. The integrated drilling, scraping, passing and washing tool according to claim 1, characterized in that the side wall of the drift diameter gauge (2) is provided with a streamline left-handed groove.

Technical Field

The invention relates to the technical field of shale gas exploitation, in particular to a drilling, scraping, penetrating and washing integrated tool.

Background

The traditional well drilling and completion operation comprises the working procedures of drilling a cement plug, scraping a pipe, dredging a well, washing the well and the like, and is generally divided into 3 times of drilling, the general well body structure is designed into a three-opening two-dimensional or three-dimensional well, the horizontal section is longer, and in order to ensure the normal operation of operations such as fracturing, gas testing and the like in the later period of well completion, the operations of drilling the cement plug, scraping the pipe, dredging the well and washing the well must be carried out on a shaft after casing and well cementation; in order to complete the well drilling and completion operation more conveniently, it is necessary to design a drilling, scraping, passing and washing integrated tool.

The existing drilling, scraping, penetrating and washing integrated tool on the market is long in pipe string and more in joints, so that the working efficiency is low, and the underground operation risk is high; in addition, the structure of the wall scraping device in the existing design is relatively fixed, and the design has defects and influences the working efficiency of shale gas exploitation.

Disclosure of Invention

The invention aims to provide a drilling, scraping, penetrating and washing integrated tool with a simple structure, and the construction efficiency can be improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the drilling, scraping, passing and washing integrated tool comprises a drill rod, a drift diameter gauge, a hydraulic wall scraping device and a sliding sleeve switch which are sequentially connected, wherein the bottom end of the sliding sleeve switch is fixedly connected with a double female connector, and the bottom end of the double female connector is fixedly connected with a drill bit.

In the above scheme, the hydraulic wall scraping device comprises an installation shell, wherein an inner drift diameter pipe is arranged at the center of the installation shell, an installation groove is formed in the side wall of the installation shell, and a wall scraping mechanism is installed in the installation groove.

In the scheme, the inner diameter gauge is fixedly connected with the mounting shell through the threaded connector and the inner thread.

In the scheme, the wall scraping mechanism comprises a wall scraping block, a shearing pin and a fixing screw, wherein connecting blocks are fixedly connected to two ends of the wall scraping block, a through hole is formed in each connecting block, the shearing pin is fixedly connected to the mounting shell, and the fixing screw penetrates through the through hole and is in threaded connection with the shearing pin; the back fixedly connected with connecting spring who scrapes the wall piece, connecting spring keeps away from the one end fixed connection who scrapes the wall piece on the installation casing, the back of scraping the wall piece still fixedly connected with pressure plug, installation casing inside be provided with pressure plug assorted through-hole.

In the above scheme, the bottom fixedly connected with screwed joint of latus rectum rule, the inside of latus rectum rule is provided with the cavity.

In the scheme, the side wall of the drift diameter gauge is provided with a streamline left-handed groove.

The drilling, scraping, penetrating and washing integrated tool has the following beneficial effects:

1. the invention only adopts one double female joint, the number of the drift diameter gauges is reduced to one, and by utilizing the design, the number of the joints is greatly reduced, meanwhile, the length of the pipe string is effectively shortened, the probability of the failure of the device body is reduced, and the underground risk is reduced;

2. when the hydraulic wall scraping device is used and enters a well, the wall scraping block is locked at the bottom of the mounting groove under the limitation of the shearing pin, a connecting spring arranged between the wall scraping block and the mounting shell is compressed, and a pressure bearing plug on the wall scraping block is sealed in a through hole on the mounting shell; the front ball of the pipe scraper enters the sliding sleeve switch, is gradually pressurized to 18-20MPa, the resultant force of the force borne by the pressure-bearing plug and the connecting spring is greater than the shearing force of the shearing pin, the wall scraping block locked by the shearing pin is ejected from the mounting groove and tightly attached to the inner wall of the casing pipe under the action of the restoring force of the connecting spring, and is continuously pressurized until the shearing pin is sheared on the sliding sleeve switch, so that the sliding sleeve switch moves downwards to open the circulating channel, and then the drill pipe can be lifted, lowered or rotated to carry out pipe scraping operation.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a hydraulic wall scraping apparatus of the present invention;

FIG. 3 is a schematic structural view of the wall scraping mechanism of the present invention;

fig. 4 is a schematic sectional view of the hydraulic wall scraping apparatus of the present invention.

The reference numbers in the figures illustrate:

1. a drill stem; 2. a drift diameter gauge; 3. a hydraulic wall scraping device; 301. installing a shell; 302. an inner diameter tube; 303. mounting grooves; 304. a wall scraping mechanism; 3041. wall scraping blocks; 3042. connecting blocks; 3043. a through hole; 3044. shearing the pin; 3045. a set screw; 3046. a connecting spring; 3047. a pressure bearing plug; 4. a sliding sleeve switch; 5. a double female joint; 6. a drill bit.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Referring to fig. 1-4, the drilling, scraping, passing and washing integrated tool comprises a drill rod 1 and a drift diameter gauge 2, wherein the drill rod 1 is arranged at the top end of a device body, the top end of the drift diameter gauge 2 is connected to the drill rod 1, the bottom end of the drift diameter gauge 2 is connected to a hydraulic wall scraping device 3, the lower end of the hydraulic wall scraping device 3 is connected with a sliding sleeve switch 4, the bottom end of the sliding sleeve switch 4 is fixedly connected with a double female joint 5, and the bottom end of the double female joint 5 is fixedly connected with a drill bit 6.

2 top fixed connection of drift diameter gage 2 is in the bottom of drilling rod 1, and the bottom fixedly connected with screwed joint of drift diameter gage 2, and the lateral wall face of drift diameter gage 2 adopts 25 streamlined left-hand designs, and the inside of drift diameter gage 2 is provided with the cavity.

According to the invention, only one double female joint 5 is adopted, the number of the drift diameter gauges 2 is reduced to one, and by utilizing the design, the number of joints is greatly reduced, meanwhile, the length of a pipe string is effectively shortened, the probability of failure of a device body is reduced, and the underground risk is reduced; meanwhile, the side wall surface of the drift diameter gauge 2 adopts 25-degree streamline left-hand design, namely a spiral groove with the depth of 1cm is arranged on the side wall surface, and the groove adopts streamline left-hand design. On one hand, the annular volume of the drift diameter gauge 2 is increased, and on the other hand, the structural rigidity of the drift diameter gauge 2 is also enhanced

Further, hydraulic pressure wall scraping device 3 is including installation casing 301, and the central point of installation casing 301 puts and is provided with interior latus rectum pipe 302, is provided with the internal thread on the top inner wall of interior latus rectum pipe 302, and latus rectum gage 2 passes through screwed joint and internal thread and installation casing 301 spiral fixed connection, is provided with mounting groove 303 on the lateral wall of installation casing 301, installs in the mounting groove 303 and scrapes wall mechanism 304.

Further, the wall scraping mechanism 304 includes a wall scraping block 3041, a shearing pin 3044 and a fixing screw 3045, two ends of the wall scraping block 3041 are fixedly connected with a connecting block 3042, the connecting block 3042 is provided with a through hole 3043, the shearing pin 3044 is fixedly connected to the mounting housing 301, and the fixing screw 3045 passes through the through hole 3043 and is spirally connected with the shearing pin 3044; the back of the wall scraping block 3041 is fixedly connected with a connecting spring 3046, one end of the connecting spring 3046 far away from the wall scraping block 3041 is fixedly connected to the mounting shell 301, the back of the wall scraping block 3041 is also fixedly connected with a pressure-bearing plug 3047, and a through hole is arranged inside the mounting shell 1 and is matched with the pressure-bearing plug 3047.

The hydraulic wall scraping device 3 of the invention is used as follows:

when entering a well, the wall scraping block 3041 is locked at the bottom of the mounting groove 303 under the restriction of the shearing pin 3044, a connecting spring 3046 arranged between the wall scraping block 3041 and the mounting shell 301 is compressed, and a pressure-bearing plug 3047 on the wall scraping block 3041 is sealed in a through hole on the mounting shell 301; the front shot of the pipe scraping enters the sliding sleeve switch 4, the pressure is gradually increased to 18-20MPa, the resultant force of the force borne by the pressure-bearing plug 3047 and the shearing force of the connecting spring 3046 is greater than the shearing force of the shearing pin 3044, the wall scraping block 3041 locked by the shearing pin 3044 is ejected from the mounting groove 303 and tightly attached to the inner wall of the casing pipe under the action of the restoring force of the connecting spring 3046, the pressure is continuously increased to the shearing pin 3044 on the sliding sleeve switch 4 to be sheared, so that the sliding sleeve switch 3044 moves downwards to open the circulating channel, and then the drill pipe 1 can be lifted, lowered or rotated to conduct pipe scraping operation.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.