CN204532776U - Rod-type oil-well pump capable of interchanging operation - Google Patents
Rod-type oil-well pump capable of interchanging operation Download PDFInfo
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- CN204532776U CN204532776U CN201520022090.4U CN201520022090U CN204532776U CN 204532776 U CN204532776 U CN 204532776U CN 201520022090 U CN201520022090 U CN 201520022090U CN 204532776 U CN204532776 U CN 204532776U
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- 239000003129 oil well Substances 0.000 title claims abstract description 56
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims description 85
- 239000003921 oil Substances 0.000 claims description 58
- 239000010985 leather Substances 0.000 claims description 48
- 239000003638 chemical reducing agent Substances 0.000 claims description 28
- 239000010779 crude oil Substances 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides a rod-type oil-well pump of interchangeable operation, include: a support assembly and an oil pump assembly; the supporting assembly supports at least two oil well pump assemblies with different pump diameters; the support assembly, comprising: the mechanical bearing comprises an upper mechanical bearing joint, a mechanical bearing seat ring and a lower mechanical bearing joint, wherein the upper mechanical bearing joint is connected with the mechanical bearing seat, the mechanical bearing seat and the mechanical bearing seat ring are matched with each other to form a mechanical seal, the mechanical bearing seat ring is clamped in the lower mechanical bearing joint, and the lower mechanical bearing joint is connected with an oil pipe. The utility model provides a technical scheme, the oil-well pump assembly in two at least different pump footpaths can be supported to the supporting assembly of same size, plays the oil pipe number of times when having reduced the adjustment pump footpath, has reduced the operating cost, has really exerted rod-type oil-well pump's technical advantage.
Description
Technical field
The utility model relates to a kind of oil field development mechanical oil recovery technology, particularly relates to a kind of rod-type pumping unit of interchangeable operation.
Background technique
In recent years, low permeability oil field is the main object of China's oil exploitation, has the features such as permeability is low, filtrational resistance large, poor connectivity due to it, exploitation difficulty is comparatively large, and well yield is also low, therefore, when carrying out petroleum production, very strict to the requirements of type selecting of oil production equipment.And oil well pump is downhole hardware the most frequently used in petroleum production process, utilizes the induced effect of pumping unit the crude oil in well can be extracted into ground, achieve crude oil production, facilitate the oil recovery development in low permeability oil field region.
At present, in the recovery process of low permeability oil field, conventional oil well pump mainly contains tubing pump and rod-type pumping unit, and because tubing pump must play oil outlet tube when examining pump, well-repairing work amount is large, and it is long to account for the well time, have impact on crude output.Can not play oil outlet tube when sharpest edges due to rod-type pumping unit are pump detection and workovers, operating cost is low, substantially increases crude oil yield, is widely used.
But above-mentioned rod-type pumping unit forms according to GB/T 18607-2008 " oil well pump and component specifications thereof " standard design, and different support assemblies is joined in different pump footpath.Therefore, existing rod-type pumping unit must play oil outlet tube when adjusting pump footpath, really can not play the technical advantage of rod-type pumping unit.
Model utility content
The utility model provides a kind of rod-type pumping unit of interchangeable operation, the support assembly of same size can support the oil well pump assembly at least two different pump footpaths, solve the problem that same support assembly cannot be suitable for different pump footpath, decrease oil pipe number of times during adjustment pump footpath, reduce operating cost, really play the technical advantage of rod-type pumping unit.
The rod-type pumping unit of a kind of interchangeable operation that the utility model provides, comprising: support assembly and oil well pump assembly; Described support assembly at least supports two described oil well pump assemblies with different pump footpath;
Described support assembly, comprise: mechanical support upper connection, mechanical support seat, mechanical support seat ring and mechanical support lower contact, described mechanical support upper connection is connected with described mechanical support seat, described mechanical support seat and described mechanical support seat ring complement each other to form mechanical seal, described mechanical support seat ring is fastened in described mechanical support lower contact, and described mechanical support lower contact is connected with oil pipe.
In an embodiment of the present utility model, described mechanical support seat and described mechanical support seat ring complement each other to form mechanical seal, specifically comprise: the external diameter of described mechanical support seat is consistent with the internal diameter size of described mechanical support seat ring.
In above-described embodiment of the present utility model, the external diameter of described mechanical support seat and the internal diameter size of described mechanical support seat ring are 59.54 millimeters.
In above-described embodiment of the present utility model, the bottom of described mechanical support seat offers the first chamfering, and the top of described mechanical support seat ring offers the second chamfering matched with described mechanical support seat, and described first chamfering and described second chamfering are 15 °.
In another embodiment of the present utility model, described support assembly, also comprises: mechanical support mandrel, mechanical support cutting ferrule, leather cup supporting mandrel, supporting leather cup, supporting leather cup seat ring, supporting leather cup pressure cap and the reducer fitting of supporting leather cup;
Described mechanical support mandrel is positioned at the inside of described mechanical support seat and described mechanical support seat ring, described mechanical support cutting ferrule is set in the outside of described mechanical support mandrel, and described mechanical support cutting ferrule bottom is connected with described leather cup supporting mandrel, described supporting leather cup, described supporting leather cup seat ring, described supporting leather cup pressure cap and the reducer fitting of described supporting leather cup in turn.
In above-described embodiment of the present utility model, described oil well pump assembly, comprising: valve rod reducer fitting, the first lock nut, stem guiding cover, valve rod, lengthening box cupling, the second lock nut, outlet valve, plunger, pump barrel, oiling valve, standing valve, the reducer fitting of pump barrel valve bonnet;
Described valve rod reducer fitting is connected with described stem guiding cover locking by described first lock nut, the reducer fitting of described supporting leather cup is connected with described pump barrel by described lengthening box cupling, described valve rod and described plunger are locked by described second lock nut and are connected, described outlet valve and described oiling valve are positioned at described plunger, and described outlet valve and described oiling valve to enter into the upper chamber of described pump barrel from the lower chambers of described pump barrel for controlling crude oil; Described standing valve is positioned at the bottom of described pump barrel, and to flow into the lower chambers of described pump barrel from oil pipe for controlling crude oil, the bottom of described pump barrel is also connected with the reducer fitting of described pump barrel valve bonnet.
In another embodiment of the present utility model, the lower end of the rod-type pumping unit of described interchangeable operation is installed with screen casing, and described screen casing lower end is installed with preventer push rod, and described preventer push rod is used for preventing crude oil from overflowing well head.
In above-described embodiment of the present utility model, described screen casing is for lengthening screen casing, and described lengthening screen casing, for ensureing that oil well pump feed flow is sufficient, makes crude oil enter oil pipe smoothly along the runner opened.
In above-described embodiment of the present utility model, described plunger is solid plunger.
The rod-type pumping unit of the interchangeable operation that the utility model embodiment provides, be connected with mechanical support seat ring coupling by the mechanical support seat of support assembly, and the support assembly of design can support at least two oil well pump assemblies with different pump footpath, therefore, the rod-type pumping unit of the interchangeable operation that the utility model embodiment provides, having support assembly can be general, the feature of the interchangeable operation in pump footpath of oil well pump, thus the operation frequency of oil outlet tube has been decreased, reduce the cost of oil pumping operation, the advantage that rod-type pumping unit adjustment pump footpath has not needed oil outlet tube can be given full play to.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the support assembly of the rod-type pumping unit of the interchangeable operation that Fig. 1 provides for the utility model embodiment one;
The dimensioned drawing of the mechanical support seat of the rod-type pumping unit of the interchangeable operation that Fig. 2 provides for the utility model embodiment two;
The dimensioned drawing of the mechanical support seat ring of the rod-type pumping unit of the interchangeable operation that Fig. 3 provides for the utility model embodiment two;
The structural representation of the oil well pump assembly of the rod-type pumping unit of the interchangeable operation that Fig. 4 provides for the utility model embodiment three.
Description of reference numerals:
11: mechanical support upper connection;
12: mechanical support seat;
13: mechanical support seat ring;
14: mechanical support lower contact;
101: mechanical support mandrel;
102: mechanical support cutting ferrule;
103: leather cup supporting mandrel;
104: supporting leather cup;
105: supporting leather cup seat ring;
106: supporting leather cup pressure cap;
107: the reducer fitting of supporting leather cup;
201: valve rod reducer fitting;
202: the first lock nuts;
203: stem guiding cover;
204: valve rod;
205: lengthen box cupling;
206: the second lock nuts;
207: outlet valve;
208: plunger;
209: pump barrel;
210: oiling valve;
211: standing valve;
212: the reducer fitting of pump barrel valve bonnet;
3: screen casing;
4: preventer push rod.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Along with the prolongation of petroleum exploration and development time, the conventional oil field such as medium to high permeable gradually reduce, and the unconventional oil field such as hyposmosis constantly increases, and the significance of Low permeable oil and gas reservoirs just highlights day by day, therefore, low permeability oil field becomes the main object of China's oil exploitation in recent years.But, there is due to low permeability oil field the features such as permeability is low, filtrational resistance large, poor connectivity, not only exploit difficulty comparatively greatly, and well yield being low, when carrying out petroleum production, needing the oil production equipment with specific function requirement.Crude oil in well can be extracted into ground by oil well pump under the induced effect of pumping unit, and then realizes the object of oil extraction, and facilitate the oil recovery development in low permeability oil field region, therefore, oil well pump is the most frequently used oil production equipment.
At present, conventional oil well pump is mainly divided into tubing pump and rod-type pumping unit two class, although the structure of tubing pump is simple, cost is low, and the pump footpath entered under allowing under identical tubing diameter is larger than the pump footpath of rod-type pumping unit, discharge capacity is large, but oil pipe must be tripped out when carrying out oil pump maintenance, the workload of well workover is large, efficiency is low, have impact on crude oil yield.And the sharpest edges of rod-type pumping unit need not play oil outlet tube exactly when carrying out pump detection and workover, operating cost is low, substantially increase crude oil yield, apply more and more extensive, the application total amount of external rod-type pumping unit accounts for 85 ~ 90% of rod pump total amount, the situation of domestic application is on the contrary, and the consumption of rod-type pumping unit is very little, 10% of not enough rod pump.
But, the rod-type pumping unit of current use is all form according to GB/T 18607-2008 " oil well pump and component specifications thereof " standard design, be characterized in that support assembly must mate by connected oil well pump mutually, for different pump footpaths, the fit dimension of support assembly is different, such as, pump footpath is the fit dimension of its support assembly of oil well pump of 28mm is 48.5mm.Therefore, utilizing rod-type pumping unit according to said modules Specification Design when adjusting pump footpath, first must play oil outlet tube, then carrying out adjusting the pump footpath of oil well pump.This structural feature of rod-type pumping unit, make must play oil outlet tube when adjusting pump footpath, operating cost is high, really can not play the technical advantage of rod-type pumping unit.Below for Changqing oilfields, simply illustrate: rod-type pumping unit pump detection period is about 2/3 of tubing pump, utilize rod-type pumping unit carry out down-hole oil pumping operation total amount higher than the total amount of tubing pump by 15%, when utilizing rod-type pumping unit to carry out oil pumping operation, play oil pipe ratio and account for 70% of rod-type pumping unit operation total amount.
The utility model provides a kind of rod-type pumping unit of interchangeable operation, be applicable to oil field development oil recovery technique, according to the rod-type pumping unit of special construction design, make support assembly can support the oil well pump assembly at least two different pump footpaths, having support assembly can the general and interchangeable feature of oil well pump, decrease oil pipe number of times during adjustment pump footpath, reduce operating cost.
Embodiment one
The structural representation of the support assembly of the rod-type pumping unit of the interchangeable operation that Fig. 1 provides for the utility model embodiment one.As shown in Figure 1, the rod-type pumping unit of a kind of interchangeable operation that the utility model embodiment one provides, comprising: support assembly and oil well pump assembly; Wherein, support assembly at least supports two oil well pump assemblies with different pump footpath.
Support assembly comprises: mechanical support upper connection 11, mechanical support seat 12, mechanical support seat ring 13 and mechanical support lower contact 14.As shown in Figure 1, the utility model embodiment one also gives the simple annexation between each parts of support assembly simultaneously, mechanical support upper connection 11 is connected with mechanical support seat 12, mechanical support seat 12 and mechanical support seat ring 13 cooperatively interact to form mechanical seal, mechanical support seat ring 13 is fastened in mechanical support lower contact 14, mechanical support lower contact 14 connected pipes.
Concrete, support assembly is mainly used in the mechanical seal feature realizing top fixing rod type oil pump, top is fixedly a kind of rod-type pumping unit, specifically can with reference to GB/T 18607-2008 " oil well pump and component specifications thereof " standard, mechanical seal is mainly connected realization by mechanical support seat 12 with the coupling of mechanical support seat ring 13, and seal form is similar to ball valve, ball seat.Because support assembly at least can support two oil well pump assemblies with different pump footpath, so when the rod-type pumping unit adopting the utility model embodiment one to provide can ensure that the structure of support assembly is unified, and the pump footpath in oil well pump assembly can adjust.It should be noted that, mechanical support seat 12 and mechanical support seat ring 13 are the critical seal parts that pump footpath is interchangeable and support assembly is general realizing rod-type pumping unit.
The rod-type pumping unit of the interchangeable operation that the utility model embodiment provides, be connected by the mechanical support seat of support assembly and mechanical support seat ring are carried out coupling, and the support assembly of design can support at least two oil well pump assemblies with different pump footpath, therefore, the rod-type pumping unit of the interchangeable operation that the utility model embodiment provides, having support assembly can be general, the feature of the interchangeable operation in pump footpath of oil well pump, thus the operation frequency of oil outlet tube has been decreased, reduce the cost of oil pumping operation, the advantage that rod-type pumping unit adjustment pump footpath has not needed oil outlet tube can be given full play to.
Embodiment two
The dimensioned drawing of the mechanical support seat of the rod-type pumping unit of the interchangeable operation that Fig. 2 provides for the utility model embodiment two; The dimensioned drawing of the mechanical support seat ring of the rod-type pumping unit of the interchangeable operation that Fig. 3 provides for the utility model embodiment two.The utility model embodiment two is on the basis of embodiment one, to the detailed description of mechanical support seat in embodiment one and mechanical support seat ring matching relationship.
As shown in Figures 2 and 3, the rod-type pumping unit of the interchangeable operation that the utility model embodiment two provides, mechanical support seat 12 mutually mates with mechanical support seat ring 13 and is connected, and specifically comprises: the external diameter of mechanical support seat 12 is consistent with the internal diameter size of mechanical support seat ring 13.
The utility model embodiment does not do concrete restriction to the size of mechanical support seat 12 and mechanical support seat ring 13, can be used as long as sizes that both couplings use can be realized, the concrete size of design need see pump under real well operation time the diameter of oil pick-up tube and GB/T 18607-2008 " oil well pump and component specifications thereof " set.
Optionally, as shown in Figures 2 and 3, the rod-type pumping unit of the interchangeable operation that the utility model embodiment two provides, the external diameter of mechanical support seat 12 and the internal diameter size of mechanical support seat ring 13 are 59.54 millimeters.Also be, when mechanical support seat 12 is 59.54mm with the fit dimension of mechanical support seat ring 13, this support assembly can support to have 28mm, 32mm, the oil well pump assembly in the different pump footpath of 38mm tri-, so, pump footpath is 28mm, 32mm, the support assembly that three oil well pump assemblies of 38mm can both be 59.54mm with support assembly fit dimension is connected, therefore, when support assembly fit dimension is constant, be used interchangeably the oil well pump that pump footpath is different, the object of oil outlet tube has not been needed when achieving adjustment pump size, decrease the operation frequency of oil pipe, improve oil recovery efficiency.
Further, as shown in Figures 2 and 3, the rod-type pumping unit of the interchangeable operation that the utility model embodiment two provides, the bottom of mechanical support seat 12 offers the first chamfering, the top of mechanical support seat ring 13 offers the second chamfering matched with mechanical support seat 12, and described first chamfering and described second chamfering are 15 °.
The rod-type pumping unit of the interchangeable operation that the present embodiment provides, by offering the first chamfering in the bottom of mechanical support seat, the second chamfering matched with mechanical support seat is offered on the top of mechanical support seat ring, mechanical support seat and mechanical support seat ring can be more easily made to realize mating and form mechanical seal, and then reach the good result of mechanical seal, first chamfering and the second chamfering are set to 15 °, the accurate fit of mechanical support seat and mechanical support seat ring can either be realized, can ensure again both sealing effects, be that an optimum chamfer angle is selected.
Embodiment three
The utility model embodiment three, on the basis of embodiment illustrated in fig. 1, is described in detail support assembly and oil well pump assembly respectively.
With reference to Fig. 1, the rod-type pumping unit of the interchangeable operation that the utility model embodiment three provides, support assembly also comprises: mechanical support mandrel 101, mechanical support cutting ferrule 102, leather cup supporting mandrel 103, supporting leather cup 104, supporting leather cup seat ring 105, supporting leather cup pressure cap 106 and supporting leather cup reducer fitting 107.
Concrete, mechanical support mandrel 101 is positioned at the inside of mechanical support seat 12 and mechanical support seat ring 13, for the relative position of solid mechanical supporting base 12 with mechanical support seat ring 13, mechanical support cutting ferrule 102 is set in the outside of mechanical support mandrel 101, play protection mechanical support mandrel 101, mechanical support cutting ferrule 102 bottom is connected with leather cup supporting mandrel 103 in turn, supporting leather cup 104, supporting leather cup seat ring 105, supporting leather cup pressure cap 106 and supporting leather cup reducer fitting 107, wherein, supporting leather cup 104 also needs mutual coupling with supporting leather cup seat ring 105, for realizing cup packing, supporting leather cup pressure cap 106 is positioned at the bottom of supporting leather cup seat ring 105, be fixed in leather cup supporting mandrel 103 after supporting leather cup 104 being mated with supporting leather cup seat ring 105 seal.Supporting leather cup reducer fitting 107 is connected with oil well pump assembly reducing for realizing.
The structural representation of the oil well pump assembly of the rod-type pumping unit of the interchangeable operation that Fig. 4 provides for the utility model embodiment three.
With reference to Fig. 1 and Fig. 4, the rod-type pumping unit of the interchangeable operation that the utility model embodiment three provides, oil well pump assembly, comprising: valve rod reducer fitting 201, first lock nut 202, stem guiding cover 203, valve rod 204, lengthening box cupling 205, second lock nut 206, outlet valve 207, plunger 208, pump barrel 209, oiling valve 210, standing valve 211, pump barrel valve bonnet reducer fitting 212.
Concrete, valve rod reducer fitting 201 is overlapped 203 by the first lock nut 202 and stem guiding and is locked and be connected, and then the connection of realization and valve rod 204, the supporting leather cup reducer fitting 107 of support assembly 1 is connected with pump barrel 209 by lengthening box cupling 205, and by the second lock nut 206 valve rod 204 locked with plunger 208 and be connected, outlet valve 207 and oiling valve 210 are positioned at plunger 208, outlet valve 207 and oiling valve 210 enter into the upper chamber of pump barrel 209 from the lower chambers of pump barrel 209 specifically for control crude oil, standing valve 211 is positioned at the bottom of pump barrel 209, specifically for controlling the lower chambers of crude oil from oil pipe inflow pump barrel 209, the bottom of pump barrel 209 is also connected with pump barrel valve bonnet reducer fitting 212, pump barrel valve bonnet reducer fitting 212 may be used for being connected with the miscellaneous part of different pore size.
It should be noted that, Fig. 1 and Fig. 4 be the support assembly of interchangeable operation oil well pump that provides of the utility model and the structural representation of oil well pump assembly respectively, only have two width figure actings in conjunction, the interchangeable operation of rod-type pumping unit can be realized, in order to describe the structure of support assembly and oil well pump assembly more accurately, just adopt two width figure to be described one by one.
Embodiment four
The utility model embodiment four is perfect further to rod pumping pump structure on the basis of above-described embodiment three.
With reference to Fig. 4, the rod-type pumping unit of the interchangeable operation that the utility model embodiment four provides, the lower end of rod-type pumping unit is also installed with screen casing 3, and screen casing 3 lower end is provided with preventer push rod 4, and preventer push rod 4 overflows well head for preventing crude oil.
Concrete, be connected and fixed in the lower end of rod-type pumping unit and screen casing 3 is installed, crude oil can be made to enter oil pipe smoothly along screen casing 3, in screen casing 3 lower end, preventer push rod 4 is installed, when at the bottom of the rod-type pumping unit lower going-into-well in the present embodiment, preventer push rod 4 can prevent crude oil from overflowing well head.
Further, the rod-type pumping unit of the interchangeable operation that the utility model embodiment four provides, described screen casing 3, for lengthening screen casing, after screen casing lengthens, can ensure that rod-type pumping unit feed flow is sufficient, make crude oil enter oil pipe smoothly along the runner opened.
Optionally, the rod-type pumping unit of the described interchangeable operation that the utility model above-described embodiment provides, plunger can also be solid plunger, now, when sucker rod drives solid plunger to move up and down, crude oil does not flow in plunger, change runner, plunger just can not be installed into fuel tap and outlet valve, only rely on the effect of valve ball just can realize the extraction of crude oil, make the more reliable of rod pumping pump work.
Embodiment five
The utility model embodiment five is the specific implementation method of the rod-type pumping unit of interchangeable operation, the rod-type pumping unit of the interchangeable operation adopting Fig. 1 to Fig. 4 to provide.
The rod-type pumping unit of interchangeable operation is when carrying out oil producing operation, and the condition of first mechanical seal between demand fulfillment support assembly, just can carry out the pumping operation of crude oil subsequently.
The concrete steps realizing mechanical seal are: first, the mechanical support localization part of support assembly is connected in tubing string, precalculated position hung by the pump arriving down oil well pump, wherein, the mechanical support localization part of support assembly comprises mechanical support upper connection 11, mechanical support seat ring 13 and mechanical support lower contact 14; Secondly, be connected with valve rod reducer fitting 201 by sucker rod, connect mechanical support seal by stem guiding cover 203, wherein, support seal comprises mechanical support seat 12, mechanical support cutting ferrule 102 and supporting leather cup 104; Again, by supporting leather cup reducer fitting 107, the crude oil pumping part that oil well pump assembly forms is connected to the lower end of rod string, removes the sealing location place into oil well pump urceolus with rod string one, realize setting of rod-type pumping unit by sucker rod self gravitation.
During normal production, utilize the above-mentioned rod-type pumping unit having realized the interchangeable operation of mechanical seal, the pumping principle of carrying out crude oil is as follows:
Upstroke: outlet valve 207 and oiling valve 210 are closed, standing valve 211 is opened, in well, liquid is under the effect of oil well pump inlet pressure difference, pump barrel 209 is entered into through standing valve 211, meanwhile, plunger 208 moves up, by the fluid discharge of oil well pump upper chamber in the oil pipe on oil well pump top;
Down stroke: standing valve 211 cuts out, outlet valve 207 and oiling valve 210 are opened, and the liquid of oil well pump lower chambers flows to the upper chamber of oil well pump through outlet valve 207 and oiling valve 210.
Liquid, with sucker rod to-and-fro motion continuously up and down, is just constantly pumped into well head, thus enters gathering system, thus achieve oil producing operation by plunger 208.
The rod-type pumping unit of the interchangeable operation adopting the utility model embodiment to provide, when carrying out maintenance employing pump or when adjusting pump size, on carry sucker rod, oil well pump will trip out with sucker rod, oil pipe is then motionless, therefore, reduce the operation frequency of oil outlet tube, achieve the object reaching and reduce operating cost.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristics; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.
Claims (9)
1. a rod-type pumping unit for interchangeable operation, is characterized in that, comprising: support assembly and oil well pump assembly; Described support assembly at least supports two described oil well pump assemblies with different pump footpath;
Described support assembly, comprise: mechanical support upper connection, mechanical support seat, mechanical support seat ring and mechanical support lower contact, described mechanical support upper connection is connected with described mechanical support seat, described mechanical support seat and described mechanical support seat ring complement each other to form mechanical seal, described mechanical support seat ring is fastened in described mechanical support lower contact, and described mechanical support lower contact is connected with oil pipe.
2. the rod-type pumping unit of interchangeable operation according to claim 1, it is characterized in that, described mechanical support seat and described mechanical support seat ring complement each other to form mechanical seal, specifically comprise: the external diameter of described mechanical support seat is consistent with the internal diameter size of described mechanical support seat ring.
3. the rod-type pumping unit of interchangeable operation according to claim 2, is characterized in that, the external diameter of described mechanical support seat and the internal diameter size of described mechanical support seat ring are 59.54 millimeters.
4. the rod-type pumping unit of interchangeable operation according to claim 3, it is characterized in that, the bottom of described mechanical support seat offers the first chamfering, the top of described mechanical support seat ring offers the second chamfering matched with described mechanical support seat, and described first chamfering and described second chamfering are 15 °.
5. the rod-type pumping unit of interchangeable operation according to claim 1, it is characterized in that, described support assembly, also comprises: mechanical support mandrel, mechanical support cutting ferrule, leather cup supporting mandrel, supporting leather cup, supporting leather cup seat ring, supporting leather cup pressure cap and the reducer fitting of supporting leather cup;
Described mechanical support mandrel is positioned at the inside of described mechanical support seat and described mechanical support seat ring, described mechanical support cutting ferrule is set in the outside of described mechanical support mandrel, and described mechanical support cutting ferrule bottom is connected with described leather cup supporting mandrel, described supporting leather cup, described supporting leather cup seat ring, described supporting leather cup pressure cap and the reducer fitting of described supporting leather cup in turn.
6. the rod-type pumping unit of interchangeable operation according to claim 5, it is characterized in that, described oil well pump assembly, comprising: valve rod reducer fitting, the first lock nut, stem guiding cover, valve rod, lengthening box cupling, the second lock nut, outlet valve, plunger, pump barrel, oiling valve, standing valve, the reducer fitting of pump barrel valve bonnet;
Described valve rod reducer fitting is connected with described stem guiding cover locking by described first lock nut, the reducer fitting of described supporting leather cup is connected with described pump barrel by described lengthening box cupling, described valve rod and described plunger are locked by described second lock nut and are connected, described outlet valve and described oiling valve are positioned at described plunger, and described outlet valve and described oiling valve to enter into the upper chamber of described pump barrel from the lower chambers of described pump barrel for controlling crude oil; Described standing valve is positioned at the bottom of described pump barrel, and to flow into the lower chambers of described pump barrel from oil pipe for controlling crude oil, the bottom of described pump barrel is also connected with the reducer fitting of described pump barrel valve bonnet.
7. the rod-type pumping unit of interchangeable operation according to claim 1, it is characterized in that, the lower end of the rod-type pumping unit of described interchangeable operation is installed with screen casing, and described screen casing lower end is installed with preventer push rod, and described preventer push rod is used for preventing crude oil from overflowing well head.
8. the rod-type pumping unit of interchangeable operation according to claim 7, is characterized in that, described screen casing is for lengthening screen casing, and described lengthening screen casing, for ensureing that oil well pump feed flow is sufficient, makes crude oil enter oil pipe smoothly along the runner opened.
9. the rod-type pumping unit of interchangeable operation according to claim 8, is characterized in that, described plunger is solid plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022090.4U CN204532776U (en) | 2015-01-13 | 2015-01-13 | Rod-type oil-well pump capable of interchanging operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022090.4U CN204532776U (en) | 2015-01-13 | 2015-01-13 | Rod-type oil-well pump capable of interchanging operation |
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| CN204532776U true CN204532776U (en) | 2015-08-05 |
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| CN201520022090.4U Expired - Fee Related CN204532776U (en) | 2015-01-13 | 2015-01-13 | Rod-type oil-well pump capable of interchanging operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840472A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Rod-type oil-well pump capable of interchanging operation |
-
2015
- 2015-01-13 CN CN201520022090.4U patent/CN204532776U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840472A (en) * | 2015-01-13 | 2016-08-10 | 中国石油天然气股份有限公司 | Rod-type oil-well pump capable of interchanging operation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 |