CN206016767U - A kind of supporting oil releaser - Google Patents

Abstract

This utility model provides a kind of supporting oil releaser.Described supporting oil releaser includes lower contact, also include central canal, stretch in lower contact described central canal one end, the lower contact tube wall is provided with oil leak hole, the central canal can make relative slip to realize the opening and closing of oil leak hole with lower contact, be provided with shear pin between the central canal and lower contact.After supporting oil releaser is transferred to specified location, central canal is subject to the pressure of oil pipe column to act on, and shear pin is cut off by the central canal slip relative with lower contact generation, the outer surface of central canal blocks the oil leak hole of lower contact, the liquid in oil pipe is enclosed in oil pipe.When needing draining, oil pipe column, central canal and lower contact is promoted to slide opposite to each other, oil leak hole is opened, and the liquid in oil pipe is flowed in sleeve pipe by oil leak hole.Complete to operate by cooperating by the outer surface of central canal and the inner surface of lower contact, simple to operation, the draining of bleeder and closing function reliability.

Description

A kind of supporting oil releaser

Technical field

This utility model is related to oil extraction in oil field technical field, specially a kind of supporting oil releaser.

Background technology

At present, the bleeder used by the pumpingh well of China Petroleum oil extraction system is mainly hammering oil discharger, mesh The unfolding mode of front conventional hammering oil discharger is：Sucker rod and piston in OIH pipe is all proposed, then from ground Throw bar, the sliding sleeve in striking oil draining apparatus, make oil pipe connect with sleeve pipe complete draining work, and work as sucker rod or piston appearance take off Fall, precipitation stratum goes out in oil pipe impurity is excessive, when occurring situations such as have thicker crude oil in inclined shaft, oil pipe, throw bar from ground Method cannot clash into open sliding sleeve in bleeder, cannot finally realize draining.

The Authorization Notice No. of the bulletin of on July 25th, 2007 is let out for the utility model patent brace type of CN 2926487Y Oily device, the supporting oil releaser are made up of top connection, sealing ring, sealing ring, sheath and lower contact, open up draining on sheath The interior rib of hole, the spline of lower contact and sheath coordinates into dental inlay, and lower contact is limited in sheath, and top connection is by close Seal ring is connected with lower contact with sealing ring, and top connection is threadedly coupled with sheath.During actual job, by the phase between upper lower contact The opening and closing that oil leak hole is realized to motion.But the supporting oil releaser of the utility model, lower contact be located at top connection with In annular space between sheath, in practical operation, lower contact is needed to complete to insert with the dual cooperation of top connection and sheath, Higher to the requirement for operating, and occur because lower contact fails to coordinate insertion with both and cause the feelings that oil leak hole cannot close Condition.

Utility model content

The purpose of this utility model is to provide a kind of supporting oil releaser.

For achieving the above object, the technical scheme of this utility model supporting oil releaser is：A kind of supporting oil releaser, bag Lower contact is included, also includes central canal, described central canal one end is stretched in lower contact, the lower contact tube wall is provided with oil leak hole, The central canal can make relative slip to realize the opening and closing of oil leak hole with lower contact, between the central canal and lower contact It is provided with shear pin.

Further, annular groove is provided with inside lower contact, and the oil leak hole is located in described annular groove.

Further, center pipe outer wall is provided with the first keyway extended along central canal axis direction, lower contact inwall Upper position corresponding with the first keyway is provided with the second keyway, is provided with key between first keyway and the second keyway.

Further, the lower contact includes that keyway seat, second keyway are located in keyway seat.

Further, the limiting stand for managing sliding stroke relative with lower contact for control centre is provided with outside central canal Rank.

Further, central canal is provided with for installing the cannelure of sealing ring outside one end of oil leak hole.

Further, undergauge section is provided with lower contact inwall oil leak hole.

The beneficial effects of the utility model are：When bleeder is transferred, due to the presence of shear pin, central canal is connect with The position of head is relatively fixed.After transferring to specified location, central canal is subject to the pressure on top to act on, and central canal is produced with lower contact Relative slip, shear pin is cut off, and the outer surface of central canal blocks the oil leak hole of lower contact, makes liquid be enclosed in bleeder Interior.When needing draining, central canal and lower contact is made to slide opposite to each other, oil leak hole is opened, liquid is outside by flowing to inside bleeder, real Existing draining.Complete to operate by cooperating by the outer surface of central canal and the inner surface of lower contact, simple to operation, let out The opening of the oil leak hole of oily device and closing function reliability.

Internal diameter of the cannelure internal diameter inside lower contact more than lower contact, when liquid flowing is so far located, liquid fluctuates, The effect of draining can be strengthened.

The keyway that center pipe outer wall and lower contact inwall are opened up can donating bond slide in the keyway, central canal and lower contact it Between relative slide steady, and bond energy enough plays a part of transmitting torque.

The positioning step arranged outside central canal, is coordinated with keyway seat, limits the opposite motion row of central canal and lower contact Journey, when positioning step is with keyway seat end contact, the opposite motion of central canal and lower contact stops, now, in lower contact State of the oil leak hole in opening.

Central canal near oil leak hole one end arrange cannelure, for installing sealing ring, prevent liquid by central canal with Ooze out in gap between lower contact.

The undergauge section arranged at lower contact inwall oil leak hole, makes the internal diameter of lower contact diminish, and in bleeder, liquid here is gathered Collection, when oil leak hole is opened, liquid quickly can be flowed out by oil leak hole, reduce the time that liquid flows out.

Description of the drawings

Structural representations of the Fig. 1 for this utility model supporting oil releaser embodiment.

Specific embodiment

Below in conjunction with the accompanying drawings embodiment of the present utility model is described further.

The specific embodiment of supporting oil releaser of the present utility model, as shown in figure 1, wherein, 1 is top connection, top connection Female thread is provided with, one end is connected with tubing string, is managed centered on 2, central canal one end is provided with external screw thread, with 1 other end of top connection Female thread is connected.3 is keyway seat, has the keyway extended along central canal axis direction in keyway seat（That is the second keyway）, keyway seat Outside is provided with external screw thread, and 4 is key, the keyway extended along central canal axis direction centered on 12 outside pipe（That is the first keyway）, Key 4 can be slided in the first keyway and the second keyway, play a part of guiding, and in operation, workman is in well head Operation thread screw on and-off machine produces moment of torsion when rotating tubing string, and moment of torsion passes downwardly through oil pipe by well head and is transferred on the key of bleeder, and key is being justified Can not move in circumferential direction, can only be by moment of torsion going down, therefore, key can play a part of transmitting torque simultaneously.Under 10 are Joint, lower contact are enclosed within the outside of central canal, and central canal 2 is stretched in lower contact 10 away from one end of top connection, and both can make Relative slip, lower contact 10 are provided with female thread near one end of top connection 1, are coordinated keyway with the external screw thread of keyway seat 3 Seat 3 is fixed in lower contact, and the limited step centered on 13 outside pipe 2, limited step 13 are matched somebody with somebody with the keyway seat 3 in lower contact 10 Close, the opposite sliding stroke of central canal 2 and lower contact 10 can be limited, central canal is prevented by coming off in lower contact.Manage centered on 5 Shear pin between 2 and lower contact 10, when supporting oil releaser is put into, shear pin 5 ensure that central canal is connect with Between head, position is relatively fixed.Cannelure centered on 7 outside pipe, is provided with sealing ring 6, the number of cannelure in cannelure 7 Amount can be increased and decreased according to practical situation, and when sealing ring is prevented from normally pumping, liquid is by between central canal and lower contact Ooze out in gap.9 is the cannelure of lower contact inwall, is provided with oil leak hole 8 in cannelure, in the present embodiment, the quantity of oil leak hole For four, it is symmetrical arranged, in reality processing, can be increased and decreased as needed.11 is the undergauge section of lower contact, herein, Liquid accumulation in oil pipe, in draining, reduces the time of draining.

During real work, the top connection connected pipes post of bleeder, lower contact connect oil well pump, keep the shape shown in Fig. 1 State, bleeder is put in sleeve pipe.When placing to specified position, with the increase of tubing string quantity so that top connection institute Be stressed increasing, and central canal is subject to the pressure of top connection to increase therewith, when pressure increases to the shear pressure of shear pin, pin Nail is cut off, and central canal is relative with lower contact generation to slide, and the right direction shown in central canal to Fig. 1 enters line slip, outside central canal Surface blocks oil leak hole, and oil pipe is opened with casing off, makes state of the liquid in oil pipe and bleeder in closing.When need Downhole tool to be changed carries out other operations, promotes tubing string, tubing string to drive shown in top connection, central canal to Fig. 1 upwards Left direction slided, make the state of oil leak hole in lower contact in opening, as lower contact keyway seat and central canal are limited The mating reaction of position step, after central canal slides certain distance to the left（Reach state shown in Fig. 1）, central canal stops to moving to left Dynamic, oil leak hole is opened maximum, and the liquid in oil pipe is carried out in sleeve pipe by oil leak hole, it is to avoid liquid is caused in the face of environment with draining into Pollution.

In other embodiment of the present utility model, keyway seat 3 can be removed, the second keyway is directly opened in lower contact On, the shaft shoulder corresponding with central canal limited step is opened up in lower contact, both is coordinated, restriction lower contact is with The stroke that heart pipe is slided opposite to each other.

Claims (7)

1. a kind of supporting oil releaser, including lower contact, it is characterised in that：Also include central canal, described central canal one end is stretched into In lower contact, the lower contact tube wall is provided with oil leak hole, and the central canal can be made relative slip with lower contact to realize draining The opening and closing in hole, are provided with shear pin between the central canal and lower contact.

2. supporting oil releaser according to claim 1, it is characterised in that：Lower contact inwall is provided with annular groove, the draining Hole position is in described annular groove.

3. supporting oil releaser according to claim 1, it is characterised in that：Center pipe outer wall is provided with along central canal axis The first keyway that direction extends, on lower contact inwall, position corresponding with the first keyway is provided with the second keyway, first keyway And second be provided with key between keyway.

4. supporting oil releaser according to claim 3, it is characterised in that：The lower contact includes keyway seat, described Two keyways are located in keyway seat.

5. supporting oil releaser according to claim 4, it is characterised in that：It is provided with outside central canal and manages for control centre The limited step of sliding stroke relative with lower contact.

6. the supporting oil releaser according to any one of claim 1-5, it is characterised in that：Central canal near oil leak hole one End is outside to be provided with for installing the cannelure of sealing ring.

7. supporting oil releaser according to claim 1, it is characterised in that：Undergauge is provided with lower contact inwall oil leak hole Section.