CN211115822U - Novel multifunctional connecting-tripping device - Google Patents

Abstract

The utility model discloses a novel multifunctional disconnector, which belongs to a downhole tool of an oil extraction system. The device consists of upper and lower joints, including a rod body, a reinforcing rib, a base and a buckle. When working, the rod bodies of the upper and lower joints are connected by the coupling and the rod string. The lower joint is close to the end of the screw pump and goes down into the oil well in advance along with the screw pump and the oil pipe, and then the upper joint follows the rod string and enters the oil pipe. When the upper joint is snapped After contacting the end face of the upper connector with the end face of the lower connector buckle, rotate it clockwise to make the buckle end face of the upper connector and the lower connector base contact. Two pairs of snap fit can be snapped together. The device is not only simple in structure but also easy to disassemble and assemble, and at the same time, the ability of the device to bear torque and large axial force is greatly improved by equipping the buckle with a reinforcing rib.

Description

A new type of multifunctional disconnector

technical field

The utility model relates to an oil pumping system, in particular to the installation and disassembly of a downhole sucker rod string of a ground-driven screw pump oil production system.

Background technique

The ground-driven screw pump oil production system has the advantages of simple structure, low initial equipment investment, good energy saving effect and wide adaptability, so it is widely used in domestic and foreign oil fields. Compared with the pumping unit lifting system, the pump inspection period of the ground-driven screw pump oil production system is relatively short. . Sometimes the sucker rod string needs to be repaired separately, and then the downhole installation and disassembly of the sucker rod string is required. And some well conditions require the disconnector to withstand large torque and axial forces under normal operating conditions.

Utility model content

In order to solve the above-mentioned problems, the present invention provides a novel multifunctional disconnector.

The utility model is realized through the following technical solutions:

A novel multifunctional disconnector is characterized in that: the disconnector includes two parts, an upper joint A and a lower joint B, and the upper joint A consists of an upper rod body (4), an upper reinforcing rib (5), and an upper base (10). It is composed of the upper joint buckle (6), the upper rod body (4) of the upper joint A and the sucker rod string (1) are connected together by the coupling (3); the lower joint B is composed of the lower rod body (9), the lower reinforcing rib (8), the lower base (11) and the lower joint buckle (7), the lower rod body (9) of the lower joint B and the sucker rod string (1) are connected together by the coupling (3), when the sucker rod When the column needs to be docked downhole, the lower joint B and the sucker rod string (1) are installed near the end of the screw pump and run into the oil well in advance along with the screw pump and the tubing (2), and then the upper joint A follows the sucker rod string into the oil well. into the oil pipe (2), when the end face of the upper joint buckle (6) of the upper joint A (cut by arc) and the end face of the lower joint buckle (7) of the lower joint B (cut by the arc), move clockwise. Rotate, so that the end face of the upper joint buckle (6) of the upper joint A protrudes downward and contacts the lower base (11) of the lower joint B, at this time, rotate the upper joint A clockwise by 90°, and then move the sucker rod upward. Gently lift the two pairs of buckles to form a snap fit in the wrong position. At the same time, the upper joint A and the lower joint B are symmetrically distributed around the central axis of the upper rod body (4) and the lower rod body (9), so there are two pairs of buckles with the same shape and assembly relationship after normal matching.

Through the reinforcing action of the upper reinforcing rib (5) and the lower reinforcing rib (8), the bearing capacity of the upper joint clip (6) and the lower joint clip (7) is stronger.

The beneficial effects of the utility model are as follows: both the upper base (10) of the upper joint and the lower base (11) of the lower joint are cut by circular arcs, which can increase the flow area of the produced liquid there.

The upper joint buckle (6) and the lower joint buckle (7) of the upper joint of the decoupler form a hook-shaped and staggered occlusal connection, the structure is simple, the axial length is short, and the whole device has no elastic elements such as springs. Compared with other types of disconnectors, the connection of this section is more stable in structure, and the overall rigidity is greater, which reduces the vibration of the rod body. At the same time, the device can also be used to transmit torque and large axial force.

Description of drawings

Fig. 1 is the connection state of the disconnector according to the present invention in the screw pump oil-pumping system.

Fig. 2 is a cross-sectional view of the disconnector according to the present invention in a normal connection state in the screw pump oil-pumping system.

FIG. 3 is a schematic axonometric view of the assembly of the disconnector according to the present invention.

FIG. 4 is a schematic axonometric view of the upper joint A of the disconnector according to the present invention.

FIG. 5 is a schematic axonometric view of the lower joint B of the disconnector according to the present invention.

In the figure: 1. Sucker rod string; 2. Oil pipe; 3. Coupling; 4. Upper rod body; 5. Upper reinforcing rib; 6. Upper joint buckle; 7. Lower joint buckle; 9. Lower rod body; 10. Upper base; 11. Lower base;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 2, a new type of multifunctional disconnector includes two parts: an upper joint A and a lower joint B: the upper joint A consists of an upper rod body (4), an upper reinforcing rib (5), an upper base (10) and an upper joint The upper rod body (4) and the sucker rod string (1) of the upper joint A are connected together by the coupling (3); the lower joint B is also composed of the lower rod body (9) and the lower reinforcing rib (8). ), the lower base (11) and the lower joint buckle (7), the lower rod body (9) of the lower joint B and the sucker rod string (1) are connected together by the coupling (3), and the upper and lower joints are all around The central axis of the upper rod body (4) or the lower rod body (9) is symmetrically distributed at 180° (as shown in Figure 3), so the shapes and assembly relationships of other parts are the same as the above.

Specific operations: For the screw pump oil-pumping system that requires regular maintenance of the rods separately, it is necessary to install a disconnector (such as the present utility model) on the sucker rod string. In the specific operation, the lower joint B connected by the coupling (3) and the lower sucker rod string (1) are run downhole together with the screw pump (generally, the disconnector is relatively close to the screw pump), and the coupling is passed through the coupling. (3) The connected upper joint A and the upper sucker rod string slowly go downhole along with the whole sucker rod string and prepare to be docked with the lower joint B of the disconnector. (As shown in Figure 3) When docking, the end face of the upper joint buckle (6) of the upper joint A goes down to the downhole and the end face of the lower joint buckle (7) of the lower joint B contacts, and then rotates clockwise. When the position as shown in the figure is vertical, the end surface of the upper connector buckle (6) can continue to descend to the position where it overlaps with the end surface of the lower base (11) of the lower connector B, then rotate the upper connector A clockwise by 90°, and finally lift it up slightly. The upper sucker rod string allows the two pairs of snaps to snap together. When it is necessary to take out the upper sucker rod string, slowly lower the sucker rod string at the wellhead. When the end face of the upper joint buckle (6) of the upper joint A and the end face of the lower base (11) of the lower joint B coincide. , rotate the sucker rod string counterclockwise by 90°, and then slowly lift the sucker rod string upward to realize the disconnection of the sucker rod string at the upper part of the decoupler and the sucker rod string at the lower part of the decoupler.

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. The utility model provides a novel multi-functional uncoupling device which characterized in that: the disconnecting and connecting device comprises an upper connector (A) and a lower connector (B), wherein the upper connector (A) consists of an upper rod body (4), an upper reinforcing rib (5), an upper base (10) and an upper connector buckle (6), and the upper rod body (4) of the upper connector (A) is connected with a sucker rod string (1) through a coupling (3); the lower joint is also composed of a lower rod body (9), a lower reinforcing rib (8), a lower base (11) and a lower joint buckle (7), the lower rod body (9) of the lower joint is connected with the sucker rod string (1) through a coupling (3), when the sucker rod string needs to be butted in a well, the lower joint and the sucker rod string (1) are installed close to the end of a screw pump and are put into an oil well along with the screw pump and an oil pipe (2) in advance, then the upper joint enters the oil pipe (2) along with the sucker rod string, when the end surface of the upper joint buckle (6) of the upper joint is contacted with the end surface of the lower joint buckle (7), the upper joint buckle (6) of the upper joint is rotated clockwise to be contacted with the lower base (11), at the moment, the upper joint (A) is rotated 90 degrees clockwise, then the sucker rod string is lifted slightly upwards, so that two pairs of buckles can form the interlocking fit, when the upper sucker rod string needs to be taken out, the sucker rod string is slowly lowered at the wellhead, when the end surface of the upper connector buckle (6) of the upper connector (A) is superposed with the end surface of the lower base (11) of the lower connector (B), the sucker rod string is rotated by 90 degrees anticlockwise, and then the sucker rod string is slowly lifted upwards, so that the upper sucker rod string of the disjointing device can be separated from the lower sucker rod string of the disjointing device; meanwhile, the upper joint and the lower joint are symmetrically distributed at 180 degrees around the central axes of the upper rod body (4) and the lower rod body (9), so that two pairs of buckles with the same shape and assembly relation exist after normal matching.

2. The novel multifunctional disconnector according to claim 1, wherein: the bearing capacity of the upper joint buckle (6) and the lower joint buckle (7) is stronger through the strengthening action of the upper reinforcing rib (5) and the lower reinforcing rib (8).

3. The novel multifunctional disconnector according to claim 1, wherein: the upper base (10) of the upper joint buckle and the lower base (11) of the lower joint buckle are both cut by arcs, so that the flow area of the produced liquid at the positions can be increased.

4. The novel multifunctional disconnector according to claim 1, wherein: the upper joint buckle (6) and the lower joint buckle (7) of the disconnecting and connecting device are in hook-shaped and in staggered snap fit.

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