CN2934552Y - Pendulum returning oil pipe rotating device - Google Patents

Abstract

A pendulum returning tubing rotary device for driving tubing rotation includes a shell, a hollow pipeline linking, a mutually meshing worm gear and a worm, a pendulum of weight, a pendulum rod and an L-type putter. The pipeline linking rotation is arranged in the shell, the worm gear is fixed in the middle position of external diameter of the pipeline linking, the worm is arranged in the shell with a middle prominence, a ratchet is arranged in the end, two pawls are respectively arranged in the pendulum circle, the pendulum circle can also be arranged in the outer casing movably and one end of the outer casing is fixed on the shell. The pendulum of weight and the pendulum rod are respectively arranged on the external diameter of the pendulum circle in the same horizontal direction and are respectively fixed on the pendulum circle. The other end of the putter is an integrated joint ring. With the help of upward and downward movement of oil pump machine, the utility model forces intermittent and evenly rotation of pump tubing, completely resolving the biased friction of the sucker rod and the pump tubing, extending the life expectancy of both equipments, and reducing the cost of crude oil mining in the exploitation of oil fields.

Description

Pendulum is returned an oil pipe whirligig

Technical field

The utility model relates to a kind of in oil well, can promote the device that oil pipe rotates.

Background technology

In the oilfield exploitation, use beam type sucker rod pumping machine widely, the polished rod eye that horse head connects down is connected with sucker rod, and the oil pump that drives in the oil well is finished oil pumping work.Because there is gradient in various degree in oil well itself, thereby oil pipe wherein is also non-vertically, so the pumping in oil well of the sucker rod on the oil pumper can cause the friction between the R a T inwall, friction causes the wearing and tearing of R a T for a long time, will cause the leakage of rod broken and oil pipe.Add up according to the study, wearing and tearing between the R a T mainly concentrate in certain several point or the narrow range about inside pipe wall 20% area of tubing string, that is to say, this fretting wear is local, be referred to as meaning traditionally and rub partially, but seriously influence the operate as normal of oil pumper, increased the waste of oil pipe, strengthen the workload of oil pumper, obviously increased the oil extraction cost.

At home in the oilfield exploitation, the sucker rod pumping machine accounts for more than 90% of total oil well, oil well more than 1/3 all exists in various degree bar, pipe to rub partially according to statistics, therefore solving rod tube rubs partially for improving oil well duty cycle, reducing cost for oil production is a urgent big problem that solves, and occurs the oil pumper of oil pipe, sucker rod rotation in succession, and it is to utilize pumping of sucker rod, by the whirligig that is attached thereto, promote connected oil pipe and rotate.This oil pumper complex structure that oil pipe is rotated, the spring return mechanism in its whirligig, because work for a long time, spring easy fracture or inefficacy can't be rotated oil pipe.

The utility model content

The utility model technical issues that need to address provide a kind of simple in structure, the pendulum of long service life is returned an oil pipe whirligig, and it is installed on the oil pick-up tube, utilizes pumping unit horsehead to move downward, promote whirligig oil pipe is rotated, utilize the heavy body of pendulum to make the whirligig return.

The utility model pendulum is returned an oil pipe whirligig, comprising housing, hollow tubing hanger, intermeshing worm gear and worm screw, the heavy body of pendulum, and an end fork and the L type push rod that are hinged; Tubing hanger is rotatably installed in the housing, and its lower end passes housing, and the upper end passes the upper end cover that is connected with housing; Worm gear is fixedly mounted on the middle part of tubing hanger external diameter by connecting key, worm screw is installed in the housing of central protrusion, the one end stretches out outside the housing and gland is rotationally connected, be installed with ratchet at this end, two ratchets equipped with ratchet are placed in respectively on the interior diameter direction of pendulum circle, and the pendulum circle is installed in rotation in the shell by gland, and shell one end is fixedlyed connected with housing central protrusion position; On the external diameter of pendulum circle, be positioned at same horizontal radial and be respectively equipped with heavy body of pendulum and fork, the heavy body of pendulum is fixedlyed connected with the pendulum circle with the slotted hole that fork all passes vertical direction on the shell respectively; The other end of push rod is the connecting ring that is connected as a single entity.

The utility model pendulum is returned an oil pipe whirligig, wherein in housing bottom and between the rotation contact surface of tubing hanger thrust bearing is housed.

The utility model pendulum is returned an oil pipe whirligig, and wherein the equipped connecting portion of worm screw and housing and gland is equipped with rolling bearing.

The utility model pendulum is returned an oil pipe whirligig, utilize pumping of oil pumper, force oil pick-up tube intermittently to be rotated equably, thoroughly solved the problem of rubbing partially of sucker rod and oil pick-up tube, in the exploitation in oil field, prolong both application life, reduced equipment loss, reduced the crude oil production cost.

Description of drawings

Fig. 1 returns an oil pipe rotary device structure principle schematic for the utility model pendulum;

Fig. 2 is the A-A section schematic top plan view of Fig. 1;

Fig. 3 is the utility model user mode annexation schematic diagram (down stroke);

Fig. 4 is the utility model user mode annexation schematic diagram (upstroke).

The specific embodiment

By Fig. 1, Fig. 2 as seen, the utility model pendulum is returned an oil pipe whirligig and is comprised housing 1, hollow tubing hanger 2, intermeshing worm gear 3 and worm screw 4, the heavy body 5 of pendulum, and an end L type push rod 6 and the fork 7 that are hinged.Tubing hanger 2 is rotatably installed in the housing 1, and its lower end passes housing 1, in housing 1 bottom and between the rotation contact surface of tubing hanger 2 thrust bearing 16 is housed; And the upper end passes the upper end cover 8 that is connected with housing 1.Worm gear 3 is fixedly mounted on the middle part of tubing hanger 2 external diameters by connecting key 9, worm screw 4 is installed in the housing 1 of central protrusion, the one end stretches out outside the housing 1 and gland 13 is rotationally connected, be installed with ratchet 10 at this end, two ratchets 11 that are equipped with ratchet 10 are placed in respectively on the diameter direction of putting in the circle 12, and pendulum circle 12 is installed in rotation in the shell 14 by gland 13, and shell 14 1 ends are fixedlyed connected with housing 1 central protrusion position; On the external diameter of pendulum circle 12, be positioned at same horizontal radial and be respectively equipped with heavy body 5 of pendulum and fork 7, put heavy body 5 and fixedly connected with pendulum circle 12 with the slotted hole that fork 7 all passes vertical direction on the shell 14 respectively; The other end of push rod 6 is the connecting ring 15 that is connected as a single entity.Worm screw 4 is equipped with rolling bearing with the connecting portion that housing 1 and gland 13 are equipped with.

During use, the flange by housing 1 bottom is returned an oil pipe whirligig with pendulum and is fixed on the well recovery tree big four, termination oil recovery accessory on the tubing hanger 2 wherein, and the oil pick-up tube 17 in its lower end and the oil well is connected and fixed.Sucker rod 18 upper ends on the oil pumper are connected with horse head through polished rod eye 19, and connecting ring 15 and the tubing hanger 2 on the push rod 6 is passed in its lower end, extend in the oil pick-up tube 17.Because production tree is connected with oil well casing, sleeve pipe is fixed on the stratum, and oil pick-up tube 17 is suspended in the middle of the sleeve pipe, so oil pick-up tube 17 can be with 2 rotations of the tubing hanger in the whirligig, shown in Fig. 3,4.Sucker rod 18 pumping in oil pick-up tube 17 drives oil well pump crude oil is extracted into ground.And when sucker rod 18 down moves, polished rod eye 19 contacts with connecting ring 15 on the push rod 6, force fork 7 to move downward, make pendulum circle 12 rotate certain angle, the heavy body 5 of corresponding pendulum upwards changes certain angle, the ratchet 11 that is built in the pendulum circle 12 is stirred ratchet 10, and ratchet 10 drives worm screw 4 and worm gear 3 rotates, thereby tubing hanger 2 and oil pick-up tube 17 are rotated.When sucker rod 18 up moves, polished rod eye 19 does not contact with connecting ring 15 on the push rod 6, because under the action of gravity of the one-directional rotation of ratchet 10 and the heavy body 5 of pendulum, fork 7 is moved upward get back to the origin-location, the repeating motion up and down of oil pumper becomes rotates the intermittence of oil pick-up tube 17, and sucker rod 18 and oil pick-up tube 17 are not rubbed partially at same position, uniform wear on the diverse location, prolong both application life, reduced equipment loss, reduced the crude oil production cost.

Claims (3)

1, a kind of pendulum is returned an oil pipe whirligig, it is characterized in that comprising housing (1), hollow tubing hanger (2), intermeshing worm gear (3) and worm screw (4), the heavy body (5) of pendulum, and an end fork (7) and the L type push rod (6) that are hinged; Described tubing hanger (2) is rotatably installed in the described housing (1), and its lower end passes described housing (1), and the upper end passes the upper end cover (8) that is connected with described housing (1); Described worm gear (3) is fixedly mounted on the middle part of described tubing hanger (2) external diameter by connecting key (9), described worm screw (4) is installed in the described housing (1) of central protrusion, the one end stretches out outside the described housing (1) and gland (13) is rotationally connected, be installed with ratchet (10) at this end, two ratchets (11) equipped with described ratchet (10) are placed in respectively on the interior diameter direction of pendulum circle (12), and described pendulum circle (12) is installed in rotation in the shell (14) by described gland (13), and described shell (14) one ends are fixedlyed connected with described housing (1) central protrusion position; On the external diameter of described pendulum circle (12), be positioned at same horizontal radial and be respectively equipped with pendulum heavily body (5) and described fork (7), the heavy body of described pendulum (5) is fixedlyed connected with described pendulum circle (12) with the slotted hole that fork (7) all passes the last vertical direction of described shell (14) respectively; The other end of described push rod (6) is the connecting ring (15) that is connected as a single entity.

2, pendulum according to claim 1 is returned an oil pipe whirligig, it is characterized in that in described housing (1) bottom and between the rotation contact surface of described tubing hanger (2) thrust bearing (16) being housed.

3, pendulum according to claim 1 and 2 is returned an oil pipe whirligig, it is characterized in that described worm screw (4) and the connecting portion that described housing (1) and described gland (13) are equipped with are equipped with rolling bearing.