CN2856488Y - Novel lever pump set - Google Patents

Abstract

A novel sucker rod pump provides the technology of reliable locking and sealing of a sucker rod pump with a locking force of more than 15t which can not be achieved by the current sucker rod pump and the novel sucker rod pump prevents the automatic separation of the pump absolutely; a high-level static seal is provided and the drawback that the period of seal validity is short and the seal ring of the sucker rod pump is worn down caused by the moving seal is avoided; and two kinds of seal are provided in the novel technology to adapt different situations of different wells in application, for example, a soft seal and a hard seal. A large-scale spreading of sucker rod pumps can be achieved by two crucial technologies of locking and sealing of the novel sucker rod pump and at the same time a function of combining a wax cleaning of the oil tube, a sand watering of the bottom of well, a preventing of spray, leak and gas is added in the novel sucker rod pump. The practical application value of the novel sucker rod pump is improved greatly because of the additional function and the oil exploiting cost can be greatly reduced by the wide application of the novel sucker rod pump, and better economic and social consequences are achieved.

Description

Novel sucker rod pump device

Affiliated technical field:

The utility model relates to oil field deep well oil recovery sucker rod pump and sucker rod pump fixture technical field.

Background technique:

The most of oil fields of China have the bar deep-well oil-extraction mainly to use tubing pump or sucker rod pump at present, wherein tubing pump is occupied an leading position again, its reason is that sucker rod pump does not pass a test on pump housing locking, pump housing sealing technique, the sucker rod pump hermetic unit often lost efficacy, gripping part is often deviate from automatically, cause the oil well can not ordinary production, simultaneously present all kinds of sucker rod pump device ubiquities lack oil pipes down-hole wax removal, do not carry tubing string sand washing and light maintenance blowout prevention combination function or oil pipe down-hole wax removal, shaft bottom leakproof and light maintenance blowout prevention combination function.Thereby greatly influenced applying of sucker rod pump.

In sucker rod pumping, sucker rod pump has the incomparable advantage of many tubing pumps with respect to tubing pump, at first sucker rod pump does not need to propose the down-hole string structure when the inspection pump, this has greatly reduced the pump detection and workover workload, secondly because sucker rod pump can fixed tubular column when the inspection pump, this provides possibility for multiple fixture is installed, its oil well pump inspecting cost of sucker rod pump that has increased multiple function can decline to a great extent, this develops oil fields very favourable to low-cost high-efficiency, effectively solving sucker rod pump seals with the positive lock technology very crucial to popularizing the sucker rod pump oil recovery in an all-round way reliably and with long-term, increase the fixed tubular column wax removal on this basis, not kill-job preventing spraying operation, do not propose the tubing string sand washing, multinomial additional functions such as tail pipe gas-tight structure and oil well shaft bottom leakage proof structure will make sucker rod pump become the oil field rod pump and develop of paramount importance oil production equipment.

Summary of the invention:

Seal reliably and with long-term and positive lock key technology and necessary additional function in order effectively to solve sucker rod pump, the utility model provides novel sucker rod pump device.Novel sucker rod pump device is made up of down-hole stationary magazine creel, sucker rod pump assembly, sucker rod pump plunger piston assembly, additional paraffin removal unit and blowout prevention sand washing or the several main bodys of blowout prevention leakproof assembly, and its each unit architecture, position, place and annexation are seen schematic representation.

The technological scheme that solve the utility model locking and sealing technique problem are adopted is: the mountion plate that a stationary magazine creel that the by-pass flow annulus access arranged becomes the down-hole sucker rod pump at first is installed in the down-hole string bottom, and the down-hole stationary magazine creel seals main framing (28) by joint, stationary magazine creel urceolus (22), the stationary magazine creel locking of stationary magazine creel top band pipe thread (21) and forms and connect with thread seal.Stationary magazine creel locking sealing main framing has the annular by-pass flow passage (24) of stationary magazine creel top jump ring latch (23), stationary magazine creel effluent through hole (25), stationary magazine creel conical seal (contact) face (26), stationary magazine creel cylindricality sealing surface (27), blowout prevention sand washing assembly top locking draw-in groove (29), blowout prevention sand washing assembly top seal face (30) and stationary magazine creel locking sealing main framing and the formation of stationary magazine creel urceolus, goes out the pump fluid and enters oil pipe by stationary magazine creel effluent through hole (25) the annular by-pass flow passage (24) of flowing through.

The dual mixing sealing means of cylindricality sealing surface (27) (14) that matches and the conical seal (contact) face (26) (12) that matches has been adopted in sealing, and wherein the cylindricality sealing surface is secondary sealing, and conical seal (contact) face is a primary seal.

Locking has been adopted at inner " C " shape jump ring that increases of " C " shape jump ring (2) and has been supported push rod (3), wherein " C " shape jump ring (2) inside has interior pawl (43), supporting push rod (3) top has the head of a hole enlargement to can be used for supporting the interior pawl (43) of " C " shape jump ring (2), the middle part of supporting push rod (3) undergauge has to lock with the release of sealing main framing stage clip locking pin moves back groove (7), and the bottom of supporting push rod (3) undergauge has the spacing tail ring that is used for pushing away in the support first position-limitting pin (9).

Sucker rod pump top lock body main framing (4) and sucker rod pump double-sealing main framing (11) are sliding contact, and their both position relations are limited by locking pin (5) and position-limitting pin (6) entirely.Support push rod (3) and also be sliding contact with sucker rod pump top lock body main framing (4) and sucker rod pump double-sealing main framing (11), support push rod (3) is limited by position-limitting pin (9) and the interaction relationship that supports push rod (3) in the preceding home position of pump down, and it is better that while position-limitting pin (9) is deformed into its limit effect of " C " shape limited ring.

Sucker rod pump top lock body main framing (4) top is threaded with sucker rod pump top pressure cap (1), the center pull rod through-hole diameter on pump roof pressure cap (1) top is less than supporting push rod (3) center pull rod through hole, and its effect is to exempt on the pull bar wax deposition to supporting the influence of push rod (3).Standing groove, bottom that lock body main framing (4) middle part has " C " shape jump ring (2) are provided with placement work circular groove or the hole that locks pin (5) and position-limitting pin (6); Sucker rod pump double-sealing main framing (11) top is provided with the placement work circular groove or the hole of locking pin (5) and position-limitting pin (6) and position-limitting pin or " C " shape limited ring (9), the middle part has effluent through hole (10), sucker rod pump pump barrel inner fluid flow into stationary magazine creel effluent through hole (25) by effluent through hole (10), sucker rod pump double-sealing main framing (11) bottom is provided with cylindricality sealing surface and cone seal face seal round section joint ring standing groove, and its bottommost is connected with sucker rod pump pump barrel (15) thread seal.

The down-hole stationary magazine creel, dual mixing sealing and locking three are worked like this, in the time of in sucker rod pump drops into the down-hole stationary magazine creel at first, be that cylindricality seal section (14) works at first, sucker rod pump is stuck in the stationary magazine creel jump ring latch (23) under the elastic force of " C " shape jump ring (2), beginning oil pumping this moment builds the pressure, make the complete pressing of two conical seal (contact) faces form tight sealing (when head of liquid does not reach, can use pump truck to suppress) reliably under the pressure of sucker rod pump fluid column number ton in oil pipe, the complete seat of sucker rod pump " C " shape jump ring this moment (2) is in the lower end of stationary magazine creel top jump ring latch, sucker rod pump is under the double action of jump ring elastic force and head of liquid, has several tons seat envelope power, utilizing simultaneously always has certain wastage that the intraluminal fluid post is pressed on the standing valve between piston and the pump barrel, carry piston on very lentamente this moment, at first sucker rod pump double-sealing main framing and pump barrel connecting thread (61) " C " shape jump ring (47) of locating to bear when step will descend pump the outer cross pawl of band of sucker rod pump and blowout prevention sand washing assembly weight is shifted piston brace rod (48) bottom downwards onto, taking out bar subsequently continues uply to promote " C " shape jump ring support push rod (3) and enter into " C " shape jump ring inner chamber by connecting pipe nipple (46) boss, can not resilience because " C " shape jump ring has interior pawl (43) to support, so just realized the positive lock of sucker rod pump, its latching force of sucker rod pump of having realized positive lock can reach more than 15 tons, even have wax card or sand card can not make sucker rod pump deviate from stationary magazine creel this moment.

Sucker rod pump " C " shape jump ring (2) has the latching force more than 15 tons under the support of supporting push rod (3), the single latch of " but C " shape jump ring (2) still has 2.5 millimeters high, cone seal might also exist to press apart from amount smaller or equal to 2.5 millimeters of vertical and fails thoroughly to depress in other words, because the conical seal (contact) face tapering is less, tapering all could between 1: 8 to 1: 75, general tapering is elected 1: 15 as, the pressure of 2.5 millimeters of Vertical direction is apart from being transformed into the perpendicular distance of the two matched seal conical surfaces less than 0.15 millimeter like this, slit " O " circle for 0.15 millimeter of two conical surface can seal fully, in order to improve sucker rod pump height reliable sealing, the utility model has increased supercharging stage clip (8) between locking and sealing main framing, the supercharging stage clip is stored in advance on ground and pressed distance is 3.5 to 20 millimeter, the pressure amount is 5 to 6 tons a pressure, when sucker rod pump " C " shape jump ring supports push rod (3) when finishing the last stroke of locking, the locking at support push rod (3) middle part is moved back groove (7) release locking and sealing main framing stage clip locking pin (5) with the release of sealing main framing stage clip locking pin, seal main framing this moment and tightly pushing down the sealing main framing under the promotion of supercharging stage clip (8) on stationary magazine creel conical seal (contact) face (26), huge pressure forces sucker rod pump to realize static seal, has only the sucker rod pump of having realized static seal could realize the sealing reliably and with long-term of sucker rod pump.

The technological scheme that the utility model solution sand washing, blowout prevention problem are adopted is: sand washing has been adopted at the down-hole tail pipe and has been installed mobilizable extension sand clean out pipe and Immobile sand washing inclined tube additional; Blowout prevention has adopted the down-hole tail pipe to install additional can be with the movable blowout prevention single current valve (37) of sand clean out pipe, and the movable part of its whole blowout prevention sand washing assembly is controlled by blowout prevention sand washing control push rod (20).

Blowout prevention sand washing control push rod (20) prolongs tail pipe (18) with the sucker rod pump afterbody and is threaded, and blowout prevention sand washing control push rod (20) middle part is provided with a boss, and boss is used for promoting that secondary to lock tapered end (34) descending when pump down; Blowout prevention sand washing control push rod (20) bottommost is a guiding cone, guiding cone top has a draw-in groove to be used for placing " C " shape jump ring (19), " C " shape jump ring (19) structure is the inverted cone that the upper end exradius is little, the lower end exradius is big, " C " shape jump ring (19) has a kind of outside expansionary force to the spring detent of pair locking tapered end (34) bottom when carrying control push rod (20) on this structure makes, its effect is not allow spring detent eject secondary locking tapered end bottom locking draw-in groove (36); When the power of lifting reaches certain value on the blowout prevention sand washing control push rod (20), secondary locking tapered end (34) lower springs pawl inwardly shrinks compression " C " shape jump ring (19) under the effect of pulling force, it is up that secondary locking this moment tapered end (34) lower springs pawl just can be deviate from secondary locking tapered end bottom locking draw-in groove (36), when pair locking tapered end (34) lower springs pawl advances to locking draw-in groove (35), become (Fig. 7) form because spring detent recovers original state, blowout prevention sand washing control push rod this moment (20) is deviate from secondary locking tapered end (34) lower springs pawl automatically and is proposed the down-hole with pump.

Have a plurality of openings of crossing on blowout prevention single current valve (37) peripheral circles, provide fluid overflow channel when forming flow channel and anti-flushing well or back-pressure wind when its effect is sand washing, blowout prevention valve cover body (39) is provided with the movable stroke that a step is used to limit blowout prevention single current valve (37); Secondary locking tapered end (34) is for being slidingly installed, and its particular location is controlled by blowout prevention sand washing control push rod (20) and locking draw-in groove (35) and (36), and the movable part of other blowout prevention sand washing assembly is thread seal and connects.

The technological scheme that the down-hole wax removal technical problem that solves the utility model is adopted is: after oil well is finished the sand washing operation or before the sand washing operation, install simple and easy wax removal lubricator and paraffin valve at well head, deliver the wax removal push rod to the down-hole then, the wax removal push rod is locked in the stationary magazine creel top jump ring latch (23) by down-hole wax removal push rod locking slips (55), wax removal push rod (58) backs down blowout prevention single current valve (37) downwards, in tubing string, be lowered to the wax removal scraper this moment, utilize the tubing string anti-flushing well or press windmill back-pressure wind, thereby remove the long-pending wax of down-hole oil tube.

Down-hole wax removal push rod locking slips (55) width is 5 to 8 millimeters, totally 3 to 4 is on chip, down-hole wax removal push rod maximum outside diameter is less than 45 millimeters except that locking slips (55), its objective is convenient the input, down-hole wax removal push rod is equipped with bigger counterweight and realizes locking by tens meters bring down fast during input; Locking slips (55) bottom " C " shape stage clip is the bigger stage clip of an elastic force, when its wax removal push rod deadweight and locking elastic force sum will be enough to resist anti-flushing well or back-pressure wind to the upthrust of blowout prevention single current valve (37).

Do not shake out or the direct leakage proof structure at the bottom of the mounting shaft of the oil well that do not need sand washing for the shaft bottom, leakage proof structure can be installed in the tubing string bottom or independently be installed on the pump casing running, at present existing ready-made shaft bottom leakage protection device can directly utilize, its down-hole blowout prevention of oil well, scraper wax removal principle that the shaft bottom leakage proof structure has been installed are identical, utilize the tubing string anti-flushing well during wax removal or press windmill back-pressure wind, thereby remove the long-pending wax of down-hole oil tube.

When sucker rod pump pump footpath hour, because of the too small double-sealing main framing of pump internal diameter (11) bottom must become box with pump barrel connecting thread (61), cancel load-bearing " C " the shape jump ring (47) on the piston brace rod (48) this moment, load-bearing " C " shape jump ring is transferred on the internal surface of column of double-sealing main framing (11), two draw-in grooves that diameter is different of double-sealing main framing (11) internal surface increase this moment, the less relatively draw-in groove of lower position diameter is " C " shape jump ring load-bearing draw-in groove, and the groove that higher position diameter is bigger is a groove of depositing " C " shape jump ring after the release.

Novel sucker rod pump device has increased the taper hard sealing structure to adapt to complex hole condition, such as high temperature well etc., see Figure 12 and Figure 13, it seals firmly by Elastic Steel is base material, wherein the inverted tubaeform conical surface seals winglet (59) and tubular firmly and seals winglet (62) firmly and exist wide 0.2 to 1.5 millimeter with main body, dark 5 to 25 millimeters compression slit, hard sealing winglet wall thickness is between 1 to 3.5 millimeter, when hard sealing winglet wall thickness is thin more, the compression slit that itself and main body are opened will be narrow more and shallow more, require tapering to be greater than 5 to 60% of main body tapering when sealing the winglet manufacturing firmly for inverted tubaeform, sealing winglet head requires slick and sly the processing, the slick and sly radius of handling is to seal half of winglet wall thickness firmly or between 50 to 75%, the radius of handling when slyness is 50 between 75% the time, sealing winglet head is an outstanding annular round end, and the maximum position of outstanding annular round end is that position, diameter place is greater than hard sealing winglet wall thickness.For the ease of making and reducing cost, the utility model preferentially uses the inverted tubaeform conical surface to seal winglet firmly, preferred wide 0.5 millimeter, dark 12 millimeters compression slit; Preferred 1.8 millimeters of the wall thickness of hard sealing winglet; Inverted tubaeform seals the winglet tapering firmly and is greater than 20% of main cone body tapering; Its slick and sly radius of handling is to seal half of winglet wall thickness firmly.After sucker rod pump seals the conical seal (contact) face life's work firmly, this moment, the pump housing was pressed with several tons pressure, hard sealing winglet is compressed " interference " radial seal power of two conical surfaces that form pairing, the powerful pressure of oil pipe upper liquid acts on inverted tubaeform and seals winglet compression both sides, slit firmly simultaneously, so just form outer tension force to hard sealing winglet, " interference " radial seal power acting in conjunction that this outer tension force and two conical surfaces form does not allow top oil pipe inner fluid pass through downwards, and we have just realized that the conical surface seals firmly like this.

The compression gap width of hard sealing winglet and main body, the degree of depth, firmly seal the winglet wall thickness and with main body tapering and sealing winglet head slick and sly handle to seal for distinct device very wide variation can be arranged, and this variation does not influence the validity of sealing! Such as at high-temperature oil well or high temperature gas injection well, at this moment the rubber round section joint ring on the boll-weevil hanger can not use, the usually oil pipe hanger is that a taper seat is in oil/water well well head four-way, its effect is again tubing and casing to be played the sealed separation effect when hanging down-hole oil tube weight, we are used for tubaeform hard sealing winglet the boll-weevil hanger of oil well or gas injection well, under the compacting owing to oil pipe that hangs several tons of weights under the boll-weevil hanger and four-way jackscrew, this moment, the compression gap width and the hard sealing winglet wall thickness of hard sealing winglet and main body all can surpass 5 millimeters, and its result can realize excellent sealing fully.

Again such as the universal rapid pipe joint of often using on the oil field of hard tube line, the normal address of people be " the oily ninth of the ten Heavenly Stems ", this rapid pipe joint is widely used in oil/water well well-flushing, discharge opeing, oil well thermochemistry wax removal, fracture in oil and water wells, acidifying, squeezes in liquid or the like construction, because the tubaeform hard sealing winglet structure that this joint inside does not have in the utility model to be invented exists, all to pound suddenly repeatedly during therefore each connecting line at the scene and could guarantee that this rapid pipe joint does not have race leakage phenomenon for tens of times with very big iron hammer! Operation is easy to produce metal and strikes spark and cause accident near iron hammer such oilfield! If be arranged at cylindrical tubaeform hard sealing winglet or conical tube wire terminal internal surface or outer surface, its corresponding joints is a ring-type sphere cooperating structure, just no longer need pounding suddenly repeatedly of sledgehammer when at this moment we connect rapid pipe joint, the substitute is to tighten with pipe wrench and get final product, its Security is apparent! In order to save manufacture cost, same for the sealing of distinct device or under different operating pressure environment condition, the compression gap width of its hard sealing winglet and main body, the degree of depth, seal winglet wall thickness and very wide variation can be arranged firmly, and this variation does not influence the validity of sealing with the tapering relation and the processing of sealing winglet head slyness of main body!

Tubaeform hard sealing winglet also can be used for the sealing of cylindricality sealing surface, its sealing principle is identical, installation such as our common motor car engine cylinder barrel, cylinder barrel is one of higher parts of temperature in motor, motor is in operation and needs cooling liquid and flow between cylinder body and cylinder barrel, this just requires cylinder barrel must realize excellent sealing when mounted, yet often there is vehicle engine cylinder-body and cylinder barrel binding site leakage cooling liquid phenomenon to occur at present, the cooling liquid of leakage enters into machine oil, these cooling liquids are destroyed the performance of machine oil again indirectly, reduced the working life of motor, if use the little wing structure of the tubaeform hard sealing of cylindricality sealing surface in motor, this will make the sealing of engine cylinder-body and cylinder barrel increase the new ways and means of a class again.

The beneficial effects of the utility model are: novel sucker rod pump device provides reliable sucker rod pump locking and reliable sealing, can reach on the latching force more than 15 tons or higher, this latching force is that present sucker rod pump institute is inaccessiable, and it has fundamentally got rid of the possibility that the pump housing is deviate from automatically! The utility model provides the static seal of highest level in sealing, has avoided because of existing motive sealing to cause sucker rod pump ring wear and the short drawback of sealing effective date.Having solved locking and having sealed these two key technologies makes the popularization of sucker rod pump become possibility, simultaneously the utility model has increased wax removal, sand washing, blowout prevention, the multinomial combination function of tail pipe gas-tight structure and has promoted the sucker rod pump application value realistic greatly, the utilization of new sucker rod pump can reduce the oil field development cost greatly, has favorable economic benefit and social benefit.

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail.

Accompanying drawing 1 novel sucker rod pump assembly and each parts are installed the annexation schematic representation.

Each parts mounting connection structure schematic representation of accompanying drawing 2 down-hole stationary magazine creels.

Accompanying drawing 3 is a C-C generalized section among Fig. 2.

Each parts of accompanying drawing 4 novel sucker rod pump blowout prevention sand washing assemblies are installed the annexation schematic representation.

Accompanying drawing 5 is an A-A generalized section among Fig. 1.

Accompanying drawing 6 is a B-B generalized section among Fig. 1.

The secondary locking of accompanying drawing 7 blowout prevention sand washing assemblies tapered end (34) upper dead center lock state figure.

The secondary locking of accompanying drawing 8 blowout prevention sand washing assemblies tapered end (34) lower dead centre lock state figure.

Each parts annexation schematic representation of accompanying drawing 9 sucker rod pump plunger piston assembly.

Accompanying drawing 10 is a D-D generalized section among Fig. 9.

Accompanying drawing 11 wax removal push rod structure schematic representation.

The accompanying drawing 12 novel sucker rod pump hard sealing structure of falling umbrella shape schematic representation.

Accompanying drawing 13 novel sucker rod pump cylindrical shape hard sealing structure schematic representation.

Accompanying drawing 14 novel sucker rod pump down-holes locking hermetic unit seat is in down-hole stationary magazine creel mounting structure schematic representation.

Blowout prevention sand washing assembly down-hole annexation schematic representation when accompanying drawing 15 is in blowout prevention, sand washing working state.

Blowout prevention sand washing control push rod (20) and blowout prevention sand washing assembly connection structural representation at the bottom of accompanying drawing 16 pumps.

Embodiment:

Embodiment 1: sucker rod pump positive lock and easily release, see that Figure 14 is when sucker rod pump drops in the stationary magazine creel at first, be that cylindricality sealing (14) is worked at first, sucker rod pump is stuck in the stationary magazine creel jump ring latch (23) under the elastic force of " C " shape jump ring (2), beginning oil pumping this moment builds the pressure, sucker rod pump makes the complete pressing of conical seal (contact) face form tight sealing (can use pump truck to suppress) reliably in oil pipe when head of liquid does not reach under the pressure about fluid column number ton, the complete seat of sucker rod pump " C " shape jump ring this moment (2) is in the lower end of stationary magazine creel top jump ring latch, sucker rod pump is under the double action of jump ring elastic force and head of liquid, has several tons seat envelope power, utilize piston and pump barrel always to have certain wastage that the intraluminal fluid post is pressed on the standing valve, carry piston on very lentamente this moment, at first sucker rod pump double-sealing main framing and pump barrel connecting thread (61) " C " shape jump ring (47) of locating to bear when step will descend pump the outer cross pawl of band of sucker rod pump and blowout prevention sand washing assembly weight is shifted piston brace rod (48) bottom downwards onto, taking out bar subsequently continues uply to promote " C " shape jump ring support push rod (3) and enter into " C " shape jump ring inner chamber by connecting first boss of pipe nipple (46), connecting first boss of pipe nipple (46) this moment takes over and supports push rod (3) bottom and be used to support push rod pushes away position-limitting pin or " C " shape limited ring (9) first spacing tail ring function and make position-limitting pin or the limited ring (9) can not resilience, when second boss that connects pipe nipple (46) advances to position-limitting pin or " C " shape limited ring (9), can not continue up, because exist supporting push rod pushes away position-limitting pin or " C " shape limited ring (9) and carries " C " shape jump ring when taking out bar on making for the first time and support the position that push rod (3) can only advance to pawl (43) in " C " shape jump ring and can not continue up first, and " C " shape jump ring can not resilience under interior pawl (43) supports, so just realized the positive lock of sucker rod pump, its latching force of sucker rod pump of having realized positive lock can reach more than 15 tons, even have wax card or sand card can not make sucker rod pump deviate from stationary magazine creel this moment, finally realize the positive lock and the sealing of new sucker rod pump.

Release: after sucker rod pump enters normal oil pumping production a period of time, when needing release, take out bar as long as carry sucker rod pump once more, because of supporting, " C " shape jump ring is ejected in the inner ring of position-limitting pin or " C " shape limited ring (9) when the spacing tail ring in push rod (3) bottom was carried on the first time, the position-limitting pin (9) that lose support this moment has lost position-limiting action, carry promotions " C " shape jump ring support push rod (3) on continuing in " C " shape jump ring on the pawl (43) when taking out bar, in the time of between the annular neutral gear of sucker rod pump top pressure cap (1), lost " C " shape jump ring (2) of support push rod (3) support thereby under taking out the pulling force of bar, inwardly shunk and easily proposed so just to have realized the light release of sucker rod pump in the stationary magazine creel jump ring latch (23).

Embodiment 2: Figure 15 is seen in the blowout prevention sand washing, when sucker rod pump is carried pump, it is up that sucker rod pump afterbody blowout prevention sand washing control push rod (20) drives whole blowout prevention sand washing assembly moving element, the up locking dop of blowout prevention sand washing assembly (32) is locked in the blowout prevention sand washing assembly top locking draw-in groove (29), watch out for spray sand washing control push rod (20) on continuing this moment, control push rod (20) continues the up secondary locking tapered end top that is locked in of promotion blowout prevention sand washing assembly secondary locking tapered end (34) and locks in the draw-in groove (35), control push rod (20) this moment and just can extract secondary locking tapered end (34) out with in the sucker rod pump proposition well, secondary locking tapered end (34) the top cylindrical tube dieback blowout prevention sand washing up locking dop of assembly (32) can not withdraw from locking draw-in groove (29).Round section joint ring in the round section joint ring standing groove (33) is sealed in blowout prevention sand washing assembly top seal face (30), and this moment, down-hole string entered blowout prevention sand washing state.

Embodiment 3: sucker rod pump tail pipe gas-tight is seen Figure 16, under the sucker rod pump during pump, because of the secondary locking of blowout prevention sand washing assembly tapered end (34) elastic claw is in normal lock-in state (see figure 7), blowout prevention sand washing control push rod (20) bottom conehead and " C " shape jump ring (19) can pass through smoothly at the bottom of the pump at this moment, behind both elastic claw positions by secondary locking tapered end (34), it is descending that the middle part boss of blowout prevention sand washing control push rod (20) promotes secondary locking tapered end (34) top cylindrical tube at the bottom of the pump, make secondary locking tapered end (34) elastic claw shrink also descending, after pair locking tapered end (34) elastic claw snaps in bottom locking draw-in groove (36), at sucker rod pump and take out make locking dop (32) deviate from blowout prevention sand washing assembly top locking draw-in groove (29) secondary locking this moment tapered end (34) elastic claw under the action of gravity of bar to embrace pump inflexibly at the bottom of blowout prevention sand washing control push rod (20) bottom conehead and " C " shape jump ring (19), under the gravity of sucker rod pump and movable blowout prevention sand washing assembly, leave behind, the descending seat of sucker rod pump and blowout prevention sand washing assembly is gone on the afterbody sand washing inclined tube (41), because of the little prolongation tail pipe (18) of the big prolongation tail pipe (31) of top band sieve aperture and sucker rod pump bottom band sieve aperture between two screen casing sieve aperture positions thus gas-tight structure at the bottom of several meters the drop formation sucker rod pump pump is just arranged.

Embodiment 4: the down-hole oil tube wax removal, after oil well is carried pump, down-hole string is in Figure 15 state, in tubing string, drop into the wax removal push rod this moment, the wax removal push rod is locked in the stationary magazine creel top jump ring latch (23) by down-hole wax removal push rod locking slips (55), and wax removal push rod (58) backs down blowout prevention single current valve (37) downwards, is lowered to the wax removal scraper this moment in tubing string, utilize the tubing string anti-flushing well or press windmill back-pressure wind, thereby remove the long-pending wax of down-hole oil tube.

Be lowered to throw in catcher behind the wax removal in down-hole wax removal push rod bailing head (53), the moving locking of last belt slips " C " shape stage clip draws cap (57) that wax removal is locked slips " C " shape stage clip (56) and pulls out down-hole wax removal push rod locking slips (55) and locate, lost the elastic force effect of " C " shape stage clip (56), locking slips (55) is deviate from automatically under the effect of pulling force in the stationary magazine creel top jump ring latch (23) and is proposed with throw in catcher.

Description of drawings

1-insert pump top pressure cap. The up locking dop of 32-blowout prevention sand washing assembly.

2-insert pump locking " C " shape jump ring. 33-round section joint ring standing groove.

3-insert pump " C " shape jump ring supports push rod. 34-blowout prevention sand washing assembly secondary lock is decided tapered end.

4-insert pump top locking body main framing. 35-secondary lock lock head top locking draw-in groove.

5-locking and sealing main framing stage clip locking pin. 36-secondary lock lock head bottom locking draw-in groove.

6-locking and the movable banking pin of sealing main framing. 37-limit section is with the blowout prevention of four through holes.

7-locking and sealing main framing stage clip locking pin 38-blowout prevention stage clip.

Groove is moved back in release. 39-blowout prevention cover body.

Supercharging stage clip between 8-locking and sealing main framing. 40-sealing round section joint ring standing groove.

9-supports push rod and pushes away position-limitting pin first. 41-tail pipe sand washing inclined tube.

10-insert pump upper side opening. 42-extends sand clean out pipe.

11-insert pump double containment main framing. Pawl in 43-insert pump locking " C " shape jump ring.

12-cone seal section. 44-pumping rod box cupling.

13-four sealings round section joint ring and standing groove. The 45-pull bar.

14-cylindricality seal section. The 46-connecting short section.

15-sucker rod pump pump barrel." C " shape jump ring of the outer cross pawl of 47-band.

16-standing valve cover.The 48-piston brace rod.

The 17-standing valve.The 49-piston.

The little prolongation 50-travelling valve cover of 18-valve seat and bottom band sieve aperture.

Tail pipe.The 51-travelling valve.

19-" C " shape jump ring.52-travelling valve seat.

Blowout prevention sand washing control push rod at the bottom of the 20-pump.53-down-hole wax removal push rod bailing head.

21-locking, sealing and fixing tube top pipe thread.54-down-hole wax removal push rod is thrown in head.

22-stationary magazine creel urceolus.The 55-single-sheet thickness is that the down-hole of 5-8 millimeter is clear

23-stationary magazine creel top jump ring latch.Wax push rod locking slips.

24-stationary magazine creel by-pass flow annular space.56-wax removal locking slips " C " shape stage clip.

25-stationary magazine creel effluent through hole.57-locking slips " C " shape stage clip draws cap.

26-stationary magazine creel conical seal (contact) face.58-down-hole wax removal prolongs push rod.

27-stationary magazine creel cylindricality sealing surface.The 59-inverted tubaeform conical surface seals winglet firmly.

28-stationary magazine creel locking sealing main framing.60-cylindricality sealing surface round section joint ring standing groove.

29-blowout prevention sand washing assembly top locking draw-in groove.61-sucker rod pump double-sealing main framing and pump barrel connect

30-blowout prevention sand washing assembly top seal face.Connect screw thread.

The big prolongation tail pipe of 31-top band sieve aperture.62-conical surface seal face tubular seals winglet firmly.

Claims (8)

1. novel sucker rod pump device is elongated cylinder, it is made up of down-hole stationary magazine creel, sucker rod pump assembly, sucker rod pump plunger piston assembly, blowout prevention sand washing or blowout prevention leakproof assembly and the several main bodys of additional paraffin removal unit, it is characterized in that: have the stationary magazine creel by-pass flow annulus access (24) that stationary magazine creel effluent through hole (25), stationary magazine creel top jump ring latch (23), blowout prevention sand washing assembly top locking draw-in groove (29), blowout prevention sand washing assembly top seal face (30) and stationary magazine creel locking sealing main framing and stationary magazine creel urceolus form on the down-hole stationary magazine creel locking sealing main framing (28); Have pawl (43) in the jump ring in sucker rod pump assembly locking " C " shape jump ring (2), sucker rod pump top lock body main framing (4), have locking and lock locking " C " shape jump ring support push rod (3) and position-limitting pin or " C " shape limited ring (9) that groove (7) are moved back in the pin release with sealing main framing stage clip, have the sucker rod pump cylindricality sealing of effluent through hole (10) and the dual mixing sealing main framing (11) of cone seal, supercharging stage clip (8) and locking position-limitting pin (5) (6) between locking and sealing main framing.

2. according to the described novel sucker rod pump device of claim 1, it is characterized in that: have two to five " 0 " shape circle standing grooves (13) in the dual mixing sealing main framing (11) on cone seal section (12) and the cylindricality seal section (14).

3. according to the described novel sucker rod pump device of claim 1, it is characterized in that: by Elastic Steel is that cone seal section (12) in the dual mixing sealing main framing (11) made of base material can be processed into and has that two to five inverted tubaeforms seal winglet (59) firmly or tubular seals winglet (62) structure firmly, seals firmly to exist a cyclic spring to compress the slit between winglet and taper main framing.

4. according to the described novel sucker rod pump device of claim 1, it is characterized in that: sand washing has been adopted at the down-hole tail pipe and has been installed sand washing inclined tube (41) and mobilizable extension sand clean out pipe (42) additional, blowout prevention has adopted the down-hole tail pipe to install additional can be with the movable blowout prevention single current valve (37) of sand clean out pipe, and the up locking dop of blowout prevention sand washing assembly (32), the secondary locking of blowout prevention sand washing assembly tapered end (34), the secondary locking upper and lower locking draw-in groove of tapered end (35) (36).

5. according to the described novel sucker rod pump device of claim 1, it is characterized in that: oil pipe down-hole wax removal has used the wax removal push rod, and the wax removal push rod draws cap (57), down-hole wax removal prolongation push rod (58) to form by down-hole wax removal push rod bailing head (53), down-hole wax removal push rod input head (54), down-hole wax removal push rod locking slips (55), wax removal locking slips " C " shape stage clip (56), locking slips " C " shape stage clip.

6. according to the described novel sucker rod pump device of claim 1, it is characterized in that: blowout prevention sand washing control push rod (20) hypomere is provided with placements " C " shape jump ring (19) at the bottom of the pump draw-in groove, stage casing are provided with the resilience groove that secondary boss, the epimere that locks tapered end (34) of downward promotion blowout prevention sand washing assembly is provided with the up locking dop of blowout prevention sand washing assembly (32); " C " shape jump ring (19).

7. according to the described novel sucker rod pump device of claim 1, it is characterized in that: when sucker rod pump pump footpath is too small, the screw thread that double-sealing main framing (11) bottom is connected with pump barrel becomes box, load-bearing " C " shape jump ring (47) on the cancellation piston brace rod (48), and load-bearing " C " shape jump ring transferred on the inner core surface of double-sealing main framing (11) two draw-in grooves that diameter is different of double-sealing main framing (11) inner core surface increase this moment.

8. according to claim 1,3 described novel sucker rod pump devices, it is characterized in that: tubaeform hard sealing winglet can be manufactured on conical seal internal surface or outer surface and cylindrical seal body internal surface and outer surface.

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