CN217558271U - Connecting mechanism of elliptical continuous sucker rod - Google Patents

Abstract

The connecting mechanism for continuous elliptic sucker rod has upper continuous rod and lower continuous rod with elliptic cross section, lower continuous rod and upper forged cylinder section, right and left buckling tiles on the upper continuous rod and the lower continuous rod, right and left buckling tiles on the lower continuous rod, connecting screws between the upper and lower continuous rods, and two symmetrical connecting screws.

Description

Connecting mechanism of elliptical continuous sucker rod

Technical Field

The utility model belongs to an oil pumping rod coupling mechanism that oil-well pump and beam-pumping unit are connected and are used in the oil field oil pumping well is oval continuous sucker rod coupling mechanism.

Background

In an oil pumping system produced by an oil well pump in an oil field, the oil pumping system mainly comprises an oil pumping unit, a sucker rod and an oil well pump, wherein the sucker rod is the most important component and is the component which is most easily damaged. In order to improve the reliability of the pumping system, it is necessary to improve the reliability of the pumping rod. The existing common sucker rods are generally formed by connecting sucker rods with the length of 9m, the sucker rod string of each well is formed by connecting hundreds of sucker rods, and the reliability of the sucker rod string is poor due to more interfaces. To address this problem, the skilled artisan developed continuous sucker rods. The length of the continuous sucker rod can be determined by the well depth, and the whole continuous rod is not provided with joints, so that the problem of unreliable connection at the joints is solved, but due to the combination of the rod diameters, other tools are required to be installed on the continuous rod, and therefore, a plurality of connection points are required on a continuous rod string of one well. The continuous sucker rod has two shapes of one of circular and elliptical cross sections, the continuous oil pumping joint with the circular cross section is the same as that of a common sucker rod, is mature technology and is relatively reliable, the joint of the elliptical continuous sucker rod does not have mature technology, the continuous sucker rod is generally connected by adopting a welding mode at present, but the welding reliability is poor, the welded junction is broken frequently during oil pumping, the period of rod detection of an oil well is short, the production is stopped, and the well is repaired, so that great economic loss is generated.

Disclosure of Invention

The utility model aims at designing an oval continuous sucker rod coupling mechanism, overcoming the problem that prior art exists, making its oval continuous sucker rod connect reliably, the pole cycle is examined to the extension oil well, improves economic benefits.

The purpose of the utility model is realized like this: the connecting screws are used for connecting the left buckling tile and the right buckling tile integrally, so that the left buckling tile and the right buckling tile cannot fall off from the upper continuous rod and the lower continuous rod, the upper connecting screws are symmetrically arranged below the upper connecting screw and the lower connecting screw, and the upper connecting screw is symmetrically arranged below the upper connecting screw and the lower connecting screw.

The utility model has the advantages that: detain tile, right side and detain tile and will go up the continuous rod, down the continuous rod lock joint an organic whole, do not reduce the sectional area of junction, do not use the welding mode, therefore the utility model discloses connect reliably, overcome the problem that exists when present oval continuous sucker rod connects, can prolong the oil well and examine the pole cycle, reduce the oil well and repair the well number of times, have apparent economic benefits.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 4 is a cross-sectional view taken along line B-B in fig. 1.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As can be seen from the figure, the embodiment of the utility model comprises an upper continuous rod 1, a left buckling tile 2, a lower continuous rod 3, a right buckling tile 4 and a connecting screw 5, wherein the cross sections of the upper continuous rod 1 and the lower continuous rod 3 are elliptical, the lower part of the upper continuous rod 1 and the upper part of the lower continuous rod 3 are forged into cylindrical sections, the diameter of the forged cylindrical sections is larger than the long axis of the elliptical cross section, so that shoulders are generated between the lower part of the upper continuous rod 1 and the upper part of the lower continuous rod 1 and the respective rod body, the axial line of the cylindrical sections which are forged is coaxial with the axial line of the rod body, the left buckling tile 2 and the right buckling tile 4 are buckled on the upper continuous rod 1 and the lower continuous rod 3, the inner middle cylindrical sections of the left buckling tile 2 and the right buckling tile 4 are buckled on the lower part of the upper continuous rod 1 and the upper part of the lower continuous rod 1, the upper parts of the left buckling tile 2 and the right buckling tile 4 buckle the rod body of the upper continuous rod 1, the lower parts of the left buckling tile 2 and the right buckling tile 4 buckle the rod body of the lower continuous rod 3, the left buckling tile 2 and the right buckling tile 4 are positioned on two sides of the elliptical long shaft of the upper continuous rod 1 and the lower continuous rod 3, the left buckling tile 2 and the right buckling tile 4 are connected into a whole by the connecting screws 5, so that the left buckling tile 2 and the right buckling tile 4 cannot fall off from the upper continuous rod 1 and the lower continuous rod 3, two groups of connecting screws 5 are arranged, each group of connecting screws 5 comprises 4 or 6 or 8, the upper group of connecting screws 5 is positioned on the lower cylindrical section of the upper continuous rod 1, the lower group of connecting screws 5 is positioned below the upper cylindrical section of the lower continuous rod 3, and the two groups of connecting screws 5 are symmetrically arranged.

The major axis of the oval shape is referred to as 3-1 in fig. 4. The axial middle force is transmitted to the buckling tile 2 and the right buckling tile 4 (shoulder suspension) by the upper continuous rod 1, and then transmitted to the lower continuous rod 2 (shoulder suspension) by the buckling tile 2 and the right buckling tile 4.

Claims (1)

1. The utility model provides an oval sucker rod coupling mechanism in succession, includes continuous rod (1), left side knot tile (2), continuous rod (3) down, right side knot tile (4), connecting screw (5), goes up continuous rod (1), the cross-sectional shape of continuous rod (3) down is oval, characterized by: the lower part of the upper continuous rod (1) and the upper part of the lower continuous rod (3) are forged into cylindrical sections, the diameter of the forged cylindrical sections is larger than the long axis with an oval section, shoulders are generated between the lower part of the upper continuous rod (1) and the upper part of the lower continuous rod (3) and respective rod bodies, the axis of the forged cylindrical sections is coaxial with the axis of the rod bodies, a left buckling tile (2) and a right buckling tile (4) are buckled on the upper continuous rod (1) and the lower continuous rod (3), the inner middle cylindrical sections of the left buckling tile (2) and the right buckling tile (4) are buckled on the lower part of the upper continuous rod (1) and the upper part of the lower continuous rod (3), the upper parts of the left buckling tile (2) and the right buckling tile (4) are buckled on the rod bodies of the upper continuous rod (1), the lower parts of the left buckling tile (2) and the right buckling tile (4) are buckled on the rod bodies of the lower continuous rod (3), the left buckling tile (2) and the right buckling tile (4) are buckled on the rod bodies of the upper continuous rod (1) and the lower continuous rod (3), the left buckling tile (2) and the right buckling tile (4) are connected with the upper continuous rod (5) and the lower rod (5) to form a group, the upper continuous rod and the lower continuous rod (5) and the lower continuous rod, the upper continuous rod (5) and the two groups of the left buckling and the upper continuous rod (5) and the two groups of the upper continuous rod (1) are connected into a whole, the upper continuous rod (5) and the two groups of the two groups, the left buckling bolt (5) which can be connected with the upper continuous rod (5) to form a group, the upper continuous rod (5) and the lower continuous rod (5) and the upper continuous rod (5) and the lower continuous rod, the two groups of connecting screws (5) are symmetrically arranged.

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