CN2447519Y - Oil riser bleeder - Google Patents

Abstract

The utility model discloses an oil drain device of an oil raising pipe, which is used in oil industries and is suitable for being used by an oil production well of an oil well pump. The utility model is composed of a coupling hoop, a center pipe, a joint, etc. A centering mechanism is sheathed and penetrated out of the center pipe and an outer sliding sleeve, and both ends of the center pipe are connected with the coupling hoop and the joint. The utility model follows the oil pipe to be arranged in a well, the oil pipe is lifted, and then oil can be drained. The operation is reliable, and the installation and the use are convenient. The utility model does not need any auxiliary tools in the constructing process. The oil drainage effect is not influenced under the conditions that an oil sucking rod is broken and shed, and a piston is blocked. The utility model is made according to the size of a cannula, which can cause the utility model to be normalized and serialized. The utility model can effectively protect environment, and reduce the production cost.

Description

Oil riser bleeder

The utility model relates to the oil production equipment of petroleum industry, and particularly a kind of oil riser bleeder is applicable to the oil well pump producing well.

At present, the bleeder that uses on the producing well is of a great variety, and structure is different, but concludes nothing more than three kinds of forms: the one, and the impacting type bleeder; The 2nd, inner sliding sleeve formula bleeder; The 3rd, the seat sealed type bleeder.The impacting type bleeder is to receive between pump barrel and the standing valve, during operation inspection pump, earlier sucker rod in the well and piston is proposed ground, throws a sucker rod then in well, and is disconnected draining pin bump by the freely falling body inertia force that sucker rod is downward, realizes draining.But this bleeder is in use also found many problems, and when the pump barrel internal pressure was high, the draining pin was easily sprained disconnected not fuel-displaced, and this mainly is material and process quality issue, and the material difference is easily sprained disconnected, and material is well hit again constantly, does not reach ideal effect.In addition, after sucker rod is cast the draining pin is severed, but because sucker rod two diameter is bigger, the pin-and-hole that severs is blocked by the sucker rod stub end and can not let out any more oil, emits spray to carry oil pipe in the same old way, contaminated environment causes the crude oil waste, and this bleeder is mainly used in little pump.Inner sliding sleeve formula bleeder is to receive position on the pump, what have promotes inner sliding sleeve work by the piston of pump, and what have promotes inner sliding sleeve work by a kind of sucker rod special joint, have by the on-off connector shape, no matter the sort of shape form all is the upper and lower purpose that realizes open and close that moves of inner sliding sleeve.But oil well pump all is in case of bending within about 20 sucker rods of rod string foot when work.The bending of sucker rod will contact with oil pipe or inner sliding sleeve aperiodically and produce friction, in case rub with inner sliding sleeve, just form a kind of frictional force, when sucker rod moves upward, under the frictional force effect, inner sliding sleeve also slowly upwards slides, move on the inner sliding sleeve in the course of time distance when reaching the draining hole site with regard to draining, cause pump not fuel-displaced, the stopping production operation.Seat envelope bleeder is to receive position on the pump, will be equipped with packer or packer assembly under the pump, leans on the seat envelope power of packer that bleeder is closed, and pump is started working.When carrying the oil pipe pump detection and workover, on carry oil pipe, packer discharges, draining is opened in bleeder draining hole.But this bleeder is in use also unsatisfactory.Because present most of well middle sleeve corrosion is more serious, oil well pump is when work, shake bigger, though packer is the seat envelope, because just incessantly slowly slippage downwards of sleeve pipe of card of ceaselessly vibrations for a long time, the slip insert of packer is when packer moves down 50mm, the bleeder hole is inoperative with regard to draining, causes pump to stop production.Present this bleeder has been eliminated and has not been re-used.Above-mentioned all bleeders all differ from one another, and still, along with wearing out of sucker rod in the oil well, rod broken and dropout phenomenon are on the rise, and sand card piston also happens occasionally, in case the sand card takes place, has only back-off to unload sucker rod or sawed-off sucker rod.These situations of all chances, above-mentioned which kind of bleeder all can't drainings, bring many inconvenience to operating worker, cause environment pollution, influence job scheduling.

The purpose of this utility model is to make a kind of oil riser bleeder, overcomes above-mentioned bleeder in rod broken, dropout, shortcoming that can't draining under the situations such as sand card piston.No matter under above-mentioned which kind of situation, make bleeder last just can draining when carrying oil pipe, reach energy conservation, protection environment, the purpose that reduces production costs.

The present technique solution can reach above-mentioned purpose, and oil riser bleeder is made up of box cupling, central tube and joint etc., and righting mechanism is set on outside central tube and the outer sliding sleeve, and the central tube two ends are connected with joint with box cupling.

The utility model is compared with other bleeder, when the needs pump detection and workover, on carry oil pipe just can draining, in work progress,, just can finish the switch motion of bleeder by the frictional force that produces between bleeder self and the sleeve pipe without any need for aid.Reliable operation, easy to install, by casing size be easy to do normalization, seriation.Break at sucker rod, take off under the situation with sand card piston and do not influence oil draining function.The purpose that can play the protection environment, reduces production costs.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with embodiment the utility model is done further detailed description, referring to accompanying drawing: oil riser bleeder, be made up of box cupling 1, central tube 2 and joint 11 etc., righting mechanism is set on outside central tube 2 and the outer sliding sleeve 4, and central tube 2 two ends are connected with joint 11 with box cupling 1.Righting mechanism is by fixed cover 6, centralizer body 7, wiper block 8 and set upright spring 9 and form, and fixed cover 6, centralizer body 7 are set on outside central tube 2 and the outer sliding sleeve 4, wiper block 8 and set upright spring 9 and be fixed in the centralizer body 7 by fixed cover 6.The top of central tube 2 has the draining hole, and the upper and lower in the draining hole respectively is provided with seal groove, built-in ring, and the sealing structure can be designed to 1 road or several.Below sealing ring, have vertical gathering sill, can be designed to 1,2 or several; Bottom at central tube 2 has annular spacing groove, there is a step below of annular spacing groove, the inner chamber of the joint 11 that is connected with central tube 2 is provided with 2 or several slots, retaining strip 10 promptly is installed in the space of central tube 2 annular spacing grooves below step and the formation of joint 11 inner chamber slots, the quantity of retaining strip 10 equates with slot, one end end is a semi-cylindrical hill, and there is step the projection below.The outer radius of outer sliding sleeve 4 has step, is provided with 1 or several pin holes, interior dress guide pin 5 in the bottom of larger diameter end.Fixed cover 6 has 2, is installed in outside the outer sliding sleeve 4, the two ends of centralizer body 7, and centralizer body 7 is that profile is the cylinder of " worker " shape.Wiper block 8 is a toxoplasm, is processed with location hole of the spring in the block setting upright of arching upward, and quantity is 2 or several, and interior dress is set upright spring 9.The recess of centralizer body 7 in the fixed cover 6 is inserted at the two ends of centralizer body 8.During assembling, earlier spring 9 is put into the spring eye of wiper block 8, fixing in the centralizer body 7 of packing into together then by fixed cover 6, form a righting mechanism.When the utility model uses at the scene, be connected to the optional position on the oil well pump or directly be connected with oil well pump.During following oil pipe tubing string, pump and bleeder comes downwards to the precalculated position by the oil pipe band.In the process of following oil pipe, bleeder is in closed condition all the time.When the needs pump detection and workover, on carry oil pipe, the wiper block 8 tight obedient internal surface of sleeve pipe of righting mechanism do to move downward with respect to oil pipe, when righting mechanism glides position to retaining strip 10, retaining strip 10 is pressed onto in the cannelure of central tube 2, removes restriction, promote the step surface of outer sliding sleeve 4 lower ends simultaneously outer sliding sleeve 4, drive outer sliding sleeve 4 relative oil pipes and do downward slippage, under when sliding into qualifying bit and putting, the draining hole on the bleeder is opened, the liquid in the oil pipe is let out in the oil sets annular space.Carry on oil pipe continues, the relative oil pipe of righting mechanism no longer moves down, and is abutted against a step surface of 11 and promotes uply, up to proposing ground, finishes the draining task.

Claims (7)

1, oil riser bleeder is made up of box cupling (1), central tube (2) and joint (11) etc., it is characterized in that righting mechanism is set on outside central tube (2) and the outer sliding sleeve (4), and central tube (2) two ends are connected with joint (11) with box cupling (1).

2, oil riser bleeder according to claim 1, it is characterized in that righting mechanism is by fixed cover (6), centralizer body (7), wiper block (8) with set upright spring (9) and form, fixed cover (6), centralizer body (7) are set on outside central tube (2) and the outer sliding sleeve (4), wiper block (8) and set upright spring (9) and be fixed in the centralizer body (7) by fixed cover (6).

3, oil riser bleeder according to claim 1 is characterized in that the top of central tube (2) has the draining hole, the upper and lower seal groove that respectively is provided with in the draining hole, and built-in ring below sealing ring, has 1 of vertical gathering sill or 2 or several; Bottom at central tube (2) has annular spacing groove, and there is a step below of annular spacing groove, and retaining strip (10) is installed in the space that this step and joint (11) inner chamber slot form, and the inner chamber slot of joint (11) is provided with 2 or several.

4, oil riser bleeder according to claim 1 is characterized in that the outer radius of outer sliding sleeve (4) has step, is provided with 1 or several pin holes in the bottom of larger diameter end.

5, oil riser bleeder according to claim 1 and 2 is characterized in that fixed cover (6) has 2, is installed in outside the outer sliding sleeve (4), the two ends of centralizer body (7), and centralizer body (7) is that profile is the cylinder of " worker " shape.

6, oil riser bleeder according to claim 1 and 2 is characterized in that wiper block (8) is one arc, sets upright in the block 2 of processed springs locating holes or several what arch upward, and interior dress is set upright spring (9).

7, oil riser bleeder according to claim 1 is characterized in that retaining strip (10) one end ends are semi-cylindrical hill, and there is step the projection below.

Images