CN221703666U - Sucker rod for stable oil well production and drainage - Google Patents

Abstract

The utility model discloses a sucker rod for stabilizing oil well production and drainage, which belongs to the technical field of oil well production and drainage equipment and comprises a main rod, wherein connecting pipes are arranged at two ends of the main rod, connecting pipes are connected to the periphery of the connecting pipes, each connecting pipe comprises a pipe frame, a connecting section is arranged at the middle end of each pipe frame, a butt joint rubber ring is arranged at two ends of each pipe frame, a threaded cavity is arranged at one side of each butt joint rubber ring, a sealing cavity is arranged at one end of each threaded cavity, and sealing rubber rings are distributed at two sides of the inside of each sealing cavity. When the sucker rod is in butt joint, threaded connection pipes at two ends of the sucker rod are stably connected with inner walls at two ends of the pipe support through the threaded cavities, and meanwhile, sealing rubber rings and filled slow release liquid are matched in the inner sealing cavities, so that the connecting pressed rubber rings are tightly attached to the sealing rubber rings, high closure and air tightness are maintained, the connection between the sucker rods is stable, and the hidden danger of leakage in the use of an oil well is further reduced.

Description

A kind of sucker rod for stable oil well production and drainage

Technical Field

The utility model relates to the technical field of oil well production and drainage equipment, in particular to a stable pumping rod used for oil well production and drainage.

Background Art

The sucker rod is a slender rod of the pumping well. It is connected to the bare rod at the top and the oil pump at the bottom to transmit power. The length of a single sucker rod is 7.62 or 8 meters, 9.14 meters. The material is generally low-carbon alloy steel that has been quenched and tempered. It is connected one by one with internal threaded hoops in the oil pipe and extends to the piston in the underground oil layer. It pumps oil through reciprocating motion. The current length of oil wells is generally about two kilometers. Taking Shengli Oilfield as an example, the deepest can reach more than three thousand meters.

In the existing use of sucker rods, since the rods need to be connected and used together, and the oil wells are deep, the oil rods themselves are prone to shaking during the oil well production and drainage process. The joints are only connected by internal threaded hoops, which makes it easy to have unstable phenomena such as leakage and disconnection during long-term operation, posing certain safety hazards. For this reason, we propose a stable sucker rod for oil well production and drainage.

Utility Model Content

The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

The utility model aims to provide a pumping rod for stable production and drainage of oil wells, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sucker rod for stable oil well production and drainage, comprising a main rod, connecting pipes are arranged at both ends of the main rod, and connecting pipes are connected around the connecting pipes, the connecting pipes include a pipe rack, and a connecting section is arranged at the middle end of the pipe rack, docking rubber rings are arranged at both ends of the pipe rack, and a threaded cavity is arranged on one side of the docking rubber ring, a sealing cavity is arranged at one end of the threaded cavity, and sealing rubber rings are distributed on both sides of the interior of the sealing cavity, and the interior around the sealing rubber ring is filled with a slow-release liquid.

Furthermore, the pipe rack and the connecting section are integrated, and the connecting pipe forms a detachable structure with both ends of the pipe rack through the threaded cavity.

Furthermore, the sealing cavity is opened along the inner wall around the connecting section, and the sealing rubber rings are symmetrically distributed along both sides of the inner wall of the sealing cavity.

Furthermore, the main rod includes a rod body, and outer sealing rings are arranged at both ends of the rod body, and scale lines are arranged on one side of the rod body.

Furthermore, the scale line is opened in a straight line along the outer wall of one side of the rod body, and the outer sealing ring is fixedly connected to the two ends of the rod body.

Furthermore, the connecting pipe includes a threaded connecting pipe, one end of which is connected to the main rod, and the other end of which is provided with a rubber ring, and one end of which is provided with an inner clamping tube.

Furthermore, the threaded connecting pipes are symmetrically distributed along the two ends of the main rod, and the threaded connecting pipes are fixedly connected to the rubber ring and the inner clamping pipe.

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

When the sucker rod is butt-jointed, the threaded pipes at both ends of the sucker rod are stably connected with the inner walls of the two ends of the pipe rack through the threaded cavity, and at the same time, a sealing rubber ring and a slow-release liquid filled in the internal sealing cavity are matched so that the rubber ring pressed into the connection and the sealing rubber ring are closely fitted, thereby maintaining high closure and air tightness, which not only makes the connection between the sucker rods stable, but also further reduces the leakage risk during the use of the oil well;

Both ends of the sucker rod are equipped with external sealing rings made of soft rubber, so that when the rod body is butt-jointed and reinforced with the connecting pipe and the connecting pipe, the external airtightness and connection stability are maintained, and the same size scale lines are set on one side of the outer wall of each group of rods to assist in confirming the butt-jointed length of the sucker rod;

The threaded pipes at both ends of the main rod are equipped with rubber ring structures, which can maintain high internal sealing and stability when used in combination with the connecting pipe.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the utility model;

FIG2 is a schematic diagram of the three-dimensional structure of the connecting pipe of the utility model;

FIG3 is a schematic diagram of the three-dimensional structure of the connection pipe of the utility model;

FIG. 4 is a schematic diagram of the internal structure of the connection pipe of the present invention.

In the figure: 1. main rod; 101. rod body; 102. outer sealing ring; 103. scale line; 2. connecting pipe; 201. threaded connecting pipe; 202. rubber ring; 203. inner clamping pipe; 3. connecting pipe; 301. pipe rack; 302. connecting section; 303. docking rubber ring; 304. threaded cavity; 305. sealing cavity; 306. sealing rubber ring; 307. slow-release liquid.

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

The utility model provides a pumping rod for stable oil well production and drainage as shown in Figures 1-4, comprising a main rod 1, connecting pipes 2 are arranged at both ends of the main rod 1, and connecting pipes 3 are connected around the connecting pipes 2, the main rod 1 comprises a rod body 101, and outer sealing rings 102 are arranged at both ends of the rod body 101, and a scale line 103 is arranged on one side of the rod body 101;

In order to facilitate the docking of multiple groups of this sucker rod during use in oil well production and drainage, as shown in Figure 1, both ends of the rod body 101 of this sucker rod are equipped with external sealing rings 102 made of soft rubber, so that when the rod body 101 is docked and reinforced by the connecting pipe 2 and the connecting pipe 3, the external air tightness and connection stability are maintained, and one side of the outer wall of each group of rod bodies 101 is provided with scale lines 103 of the same size to assist in confirming the docking length of this sucker rod.

As shown in FIG. 1-2 , the connecting pipe 2 includes a threaded pipe 201 , one end of which is connected to the main rod 1 , and the other end of the threaded pipe 201 is provided with a rubber ring 202 , and one end of the threaded pipe 201 is provided with an inner clamping pipe 203 ;

In order to facilitate the high-tight docking between the sucker rods, as shown in Figure 1-2, the threaded connecting tubes 201 at both ends of the main rod 1 are equipped with rubber rings 202 structures, which can maintain high internal sealing and stability when used in combination with the connecting tube 3.

As shown in Fig. 3-4, the connecting tube 3 includes a tube rack 301, and a connecting section 302 is provided at the middle end of the tube rack 301, butt rubber rings 303 are provided at both ends of the tube rack 301, and a threaded cavity 304 is provided on one side of the butt rubber ring 303, and a sealing cavity 305 is provided at one end of the threaded cavity 304, and sealing rubber rings 306 are distributed on both sides of the sealing cavity 305, and the surrounding of the sealing rubber ring 306 is filled with a slow-release liquid 307;

Finally, in order to improve the high sealing performance of the overall sucker rod joint and the stability of the structure after connection, as shown in Figure 3-4, when the sucker rod is docked, the threaded pipes 201 at both ends of the sucker rod are stably connected with the inner walls of the pipe rack 301 at both ends through the threaded cavity 304, and at the same time, the sealing rubber ring 306 and the filled slow-release liquid 307 are matched in the internal sealing cavity 305 to make the pressed rubber ring 202 fit tightly with its sealing rubber ring 306. The connection of another group of sucker rods is to make the internal clamping tube 203 at the front end of the other group of sucker rod threaded pipes 201 enter the sealing cavity 305 for sealing before internal docking, forming an internal and external multi-layer docking, thereby maintaining high closure and airtightness, which not only makes the connection between the sucker rods stable, but also further reduces the leakage risk during the use of the oil well.

In summary, when the sucker rod is in use, the outer sealing rings 102 at both ends of the rod body 101 and the connecting pipe 2 are connected to the pipe rack 301, and the threaded pipe 201 is rotated into the pipe rack 301 for connection. When the pipe rack 301 and the threaded pipe 201 are rotated and docked in place, the rubber ring 202 part also enters the sealing cavity 305. At this time, the sealing rubber ring 306 in the sealing cavity 305 is deformed due to the squeezing of the entering rubber ring 202 and the slow-release liquid 307 filled inside, so that the threaded pipe 201 and the rubber ring 202 are clamped and sealed around, and then another group of sucker rods are connected, so that the inner clamping tube 203 at the front end of the threaded pipe 201 of the other group of sucker rods enters the sealing cavity 305 for sealing and then docking is performed internally, forming an internal and external multi-layer docking process.

The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above invention concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims (7)

1. A sucker rod for stable production and drainage of oil wells, comprising a main rod (1), characterized in that: connecting pipes (2) are provided at both ends of the main rod (1), and connecting pipes (3) are connected around the connecting pipes (2), the connecting pipes (3) include a pipe rack (301), and a connecting section (302) is provided at the middle end of the pipe rack (301), butt rubber rings (303) are provided at both ends of the pipe rack (301), and a threaded cavity (304) is provided on one side of the butt rubber ring (303), a sealing cavity (305) is provided at one end of the threaded cavity (304), and sealing rubber rings (306) are distributed on both sides of the sealing cavity (305), and the surrounding area of the sealing rubber ring (306) is filled with a slow-release liquid (307). 2. A sucker rod for stable oil well production and drainage according to claim 1, characterized in that the pipe rack (301) and the connecting section (302) are integrated, and the connecting pipe (2) forms a detachable structure with both ends of the pipe rack (301) through a threaded cavity (304). 3. A sucker rod for stable oil well production and drainage according to claim 1, characterized in that: the sealing cavity (305) is opened along the inner wall around the connecting section (302), and the sealing rubber ring (306) is symmetrically distributed along both sides of the inner wall of the sealing cavity (305). 4. A sucker rod for stable oil well production and drainage according to claim 1, characterized in that: the main rod (1) comprises a rod body (101), and outer sealing rings (102) are provided at both ends of the rod body (101), and a scale line (103) is provided on one side of the rod body (101). 5. A sucker rod for stable oil well production and drainage according to claim 4, characterized in that: the scale line (103) is opened in a straight line along the outer wall of one side of the rod body (101), and the outer sealing ring (102) is fixedly connected to the two ends of the rod body (101). 6. A sucker rod for stable oil well production and drainage according to claim 1, characterized in that: the connecting pipe (2) includes a threaded connecting pipe (201), one end of the threaded connecting pipe (201) is connected to the main rod (1), and the other end of the threaded connecting pipe (201) is provided with a rubber ring (202), and one end of the threaded connecting pipe (201) is provided with an inner clamping pipe (203). 7. A sucker rod for stable oil well production and drainage according to claim 6, characterized in that: the threaded pipe (201) is symmetrically distributed along the two ends of the main rod (1), and the threaded pipe (201) is fixedly connected to the rubber ring (202) and the inner clamping tube (203).