CN2444051Y

CN2444051Y - Turning type disconnecting device

Info

Publication number: CN2444051Y
Application number: CN 00246568
Authority: CN
Inventors: 杨永华; 郑学成; 师国臣; 魏继德; 赵春生
Original assignee: INST OF OIL EXPL TECHNOLOGY DA
Current assignee: INST OF OIL EXPL TECHNOLOGY DA
Priority date: 2000-08-02
Filing date: 2000-08-02
Publication date: 2001-08-22
Anticipated expiration: 2010-08-02

Abstract

The utility model relates to a novel torque transmitting type connecting-tripping device, which belongs to a connecting-tripping device used for mechanical oil producing wells for oil fields. The utility model is a novel torque transmitting type connecting-tripping device designed for causing a bolt of an oil producing well of a screw pump to transmit torques. The utility model is mainly composed of an upper joint 1, a connecting-tripping jaw 2, a torque transmitting ring 3, a torque transmitting rod 4, a protective cover 5, a spring 6, a lower joint 7, etc., and is mainly used for the connecting-tripping of a rotor and a sucker rod of the screw pump in screw pump wells. The utility model has the advantages of realization of flexible connecting-tripping of the rotor and the sucker rod, construction cost expenses saving, etc.

Description

A kind of novel turning type on-off connector

A kind of novel turning type on-off connector belongs to the uncoupling device of using in the machine-pumped oil well of oil field.

Existing on-off connector is mainly used in docking and the location of sucker rod and downhole pump plunger in the rod-pumped well, existing on-off connector has only butt joint and positioning function, and there is not the function of transfer torque, screw pump is in the oil field large scale application at present, and existing on-off connector can't not be used for screw bolt well owing to there is the function of transfer torque.

The purpose of this utility model provide can be on the screw pump oil production well roofbolt a kind of novel turning type on-off connector of transfer torque.And use it and can also make screw pump rotor bottom fastening means.

The utility model mainly is made up of last uncoupling part and following uncoupling part two large divisions, last uncoupling part is by upper binding head, the uncoupling pawl, compositions such as torsion pass ring, wherein screw thread connects the torsion pass ring successively in the uncoupling pawl, upper binding head, and the torsion pass ring seat is on the interior step of uncoupling pawl, following uncoupling part is by the torsion pass bar, protective jacket, spring, compositions such as lower union joint, wherein the torsion pass bar passes from protective jacket top, spring places between torsion pass bar and the protective jacket, inner the linking with torsion pass bar lower end external screw-thread in lower union joint upper end connects, and lower union joint top passes and holds out against spring from the protective jacket bottom, and protective jacket lower end and lower union joint upper gap are connected.

The torsion pass ring is hollow cylinder, hollow parts is that relative both sides are half garden shape, relative in addition both sides are straight shape, and the nib guiding is processed in its flat face both sides, lower end, torsion pass bar shaped upper part and the identical and smaller cylinder of the interior hole shape of torsion pass ring, and two nib guiding are processed in its face both sides, garden, upper end, and the endoporus of torsion pass bar top and torsion pass ring utilizes both nib guide effects to be connected.

Axially grooved and the endoporus of the locking sliding sleeve of uncoupling pawl bottom has step, the locking sliding sleeve endoporus step of uncoupling pawl bottom is stuck in the exterior bayonet slot step place of torsion pass bar, the internal diameter of protective jacket is greater than the external diameter of uncoupling pawl, and protective jacket protects the locking sliding sleeve claw of uncoupling pawl under the effect of spring.

Compared with the prior art the utility model has following advantage:

1, it can realize the uncoupling of sucker rod and screw pump rotor neatly.

When 2, in the big displacement screw pump sump in oil field, using, can utilize 2 ⁷/ 8 " oil pipe is replaced 3  of former employing " oil pipe, but estimate that the cost saving of a bite well is more than 30,000 yuan.

3, utilize it to connect downhole tool, also can be used for simultaneously having widened the application of screw pump in the common big displacement screw pump sump in the bottom of screw pump rotor.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the utility model structure diagram;

Fig. 2 is the structure diagram of torsion pass ring and its A-A sectional view;

Fig. 3 is the structure diagram of torsion pass bar and its B-B sectional view;

Fig. 4 is that torsion pass ring C is to view;

Fig. 5 is that torsion pass ring D is to view;

Fig. 6 is that nib guiding E is to expanded view.

The utility model is described in further detail below in conjunction with accompanying drawing:

The utility model mainly is made up of last uncoupling part and following uncoupling part two large divisions, last uncoupling part is by upper binding head 1, uncoupling pawl 2, torsion pass ring 3 compositions such as grade, wherein screw thread connects torsion pass ring 3 successively in the uncoupling pawl 2, upper binding head 1, and 3 on torsion pass ring is on the interior step of uncoupling pawl 2, following uncoupling part is by torsion pass bar 4, protective jacket 5, spring 6, lower union joint 7 compositions such as grade, wherein torsion pass bar 4 passes from protective jacket 5 tops, spring 6 places between torsion pass bar 4 and the protective jacket 5, inner the linking with torsion pass bar 4 lower end external screw-threads in lower union joint 7 upper ends connects, and lower union joint 7 tops pass and hold out against spring 6 from protective jacket 5 bottoms, and protective jacket 5 lower ends and lower union joint 7 upper gap are connected.

Torsion pass ring 3 is hollow cylinder, hollow parts is that relative both sides are half garden shape, relative in addition both sides are straight shape, and the nib guiding is processed in its flat face both sides, lower end, torsion pass bar 4 shaped upper parts and the identical and smaller cylinder of the interior hole shape of torsion pass ring 3, and two nib guiding are processed in its face both sides, garden, upper end, and the endoporus of torsion pass bar 4 tops and torsion pass ring 3 utilizes both nib guide effects to be connected.

Axially grooved and the endoporus of the locking sliding sleeve of uncoupling pawl 2 bottoms has step, the locking sliding sleeve endoporus step of uncoupling pawl 2 bottoms is stuck in the exterior bayonet slot step place of torsion pass bar 4, the internal diameter of protective jacket 5 is greater than the external diameter of uncoupling pawl 2, and protective jacket 5 protects the locking sliding sleeve claw of uncoupling pawl 2 under the effect of spring 6.

During on-the-spot the use, at first upward uncoupling of the present utility model partly is connected the bottom of sucker rod, uncoupling down of the present utility model partly is connected the top of screw pump rotor, when going into the well, the stator that will be connected the following uncoupling part on screw pump rotor top and screw pump earlier is together in the lower going-into-well, then connecting in the sucker rod lower going-into-well of going up the on-off connector part, utilize the nib guide effect of torsion pass bar 4 tops and torsion pass ring 3 bottoms that torsion pass bar 4 is entered in the torsion pass ring 3 smoothly, and cooperate together, wherein the nib guiding is exactly a bit to be starting point in the lower end of torsion pass ring 3 and the corresponding cylinder centre of torsion pass bar 4 upper ends, the body that cuts out from certain angle to the other end along cylinder then, continue to transfer roofbolt then, rely on rod string gravity and uncoupling pawl 2 to move down and begin the warp-wise distortion and open, open the internal diameter of the external diameter of back uncoupling pawl 2 claws greater than protective jacket 5, uncoupling pawl 2 is pressing protective jacket 5 to move down, enter in the exterior bayonet slot of torsion pass bar 4 up to uncoupling pawl 2, after having crossed draw-in groove, uncoupling pawl 2 resiles rapidly, this moment, its locking sliding sleeve was stuck in the exterior bayonet slot step place of torsion pass bar 4, at this moment, the external diameter of uncoupling pawl 2 claws is less than the internal diameter of protective jacket 5, protective jacket 5 pop into position and uncoupling pawl 2 protected under the effect of spring 6, play the effect of protection uncoupling pawl 2, finished being connected of screw pump rotor and sucker rod.

In the operation process of down-hole during transfer torque, the transmission of power of sucker rod is given jointing 1, pass to uncoupling pawl 2 by screw thread then, because torsion pass ring 3 and uncoupling pawl 2 are by screwed connection, so transmission of power is to torsion pass ring 3, torsion pass ring 3 is given torsion pass bar 4 transmission of power by the special shape of endoporus, and torsion pass bar 4 is given jointing 7 down transmission of power by screw thread, is delivered at last on the rotor of screw pump.

When needs are thrown off, to carry on the sucker rod, the external diameter of sheath 5 is greater than the external diameter that connects uncoupling pawl 2 at this moment, releasing-joint on the oil pipe is contacted with protective jacket 5, and compression spring 6, protective jacket 5 relative torsion pass bar 4 downward slippages are when protective jacket 5 slippages, one segment distance and after breaking away from uncoupling pawl 2, the locking sliding sleeve and the torsion pass bar 4 of uncoupling pawl 2 can be thrown off, and have finished both disengagings.

Claims

1, a kind of novel turning type on-off connector, it is characterized in that: it is made up of last uncoupling part and following uncoupling part two large divisions, last uncoupling part is by upper binding head (1), uncoupling pawl (2), torsion pass ring compositions such as (3), wherein the interior screw thread of uncoupling pawl (2) connects torsion pass ring (3) successively, upper binding head (1), and torsion pass ring (3) seat is on the interior step of uncoupling pawl (2), following uncoupling part is by torsion pass bar (4), protective jacket (5), spring (6), lower union joint compositions such as (7), wherein torsion pass bar (4) passes from protective jacket (5) top, spring (6) places between torsion pass bar (4) and the protective jacket (5), inner the linking with torsion pass bar (4) lower end external screw-thread in lower union joint (7) upper end connects, and lower union joint (7) top passes and holds out against spring (6) from protective jacket (5) bottom, and protective jacket (5) lower end and lower union joint (7) upper gap are connected;

Torsion pass ring (3) is hollow cylinder, hollow parts is that relative both sides are half garden shape, relative in addition both sides are straight shape, and the nib guiding is processed in its flat face both sides, lower end, identical and the smaller cylinder of interior hole shape of torsion pass bar (4) shaped upper part and torsion pass ring (3), and two nib guiding are processed in its face both sides, garden, upper end, and the endoporus of torsion pass bar (4) top and torsion pass ring (3) utilizes both nib guide effects to be connected;

Axially grooved and the endoporus of the locking sliding sleeve of uncoupling pawl (2) bottom has step, the locking sliding sleeve endoporus step of uncoupling pawl (2) bottom is stuck in the exterior bayonet slot step place of torsion pass bar (4), the internal diameter of protective jacket (5) is greater than the external diameter of uncoupling pawl (2), and protective jacket (5) protects the locking sliding sleeve claw of uncoupling pawl (2) under the effect of spring (6).