CN202645953U - Immersion rod type heavy oil pump - Google Patents
Immersion rod type heavy oil pump Download PDFInfo
- Publication number
- CN202645953U CN202645953U CN 201220216331 CN201220216331U CN202645953U CN 202645953 U CN202645953 U CN 202645953U CN 201220216331 CN201220216331 CN 201220216331 CN 201220216331 U CN201220216331 U CN 201220216331U CN 202645953 U CN202645953 U CN 202645953U
- Authority
- CN
- China
- Prior art keywords
- pump
- pump barrel
- oil
- barrel
- plunger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007654 immersion Methods 0.000 title claims abstract description 22
- 239000000295 fuel oil Substances 0.000 title abstract 2
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 239000003921 oil Substances 0.000 abstract description 68
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 6
- 239000008186 active pharmaceutical agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
本实用新型提供了一种浸入杆式抽稠油泵，属于石油行业机械采油领域。本实用新型位于油管(2)的内腔中，并连接在抽油杆(1)的底部，其包括连接在油管(2)内壁的泵座(3)及与抽油杆(1)相连接的泵组，所述泵组通过密封锚定组件(4)悬挂在油管(2)内；所述泵组包括上泵筒(5)、上柱塞(6)、下泵筒(7)和下柱塞(9)；所述上泵筒(5)与下泵筒(7)采用螺纹串联连接，上泵筒(5)的泵径小于下泵筒7的泵径；所述上柱塞(6)和下柱塞(9)串联连接，所述上柱塞(6)与所述上泵筒(5)配合，下柱塞(9)与所述下泵筒(7)配合；所述密封锚定组件(4)坐于泵座(3)上。
The utility model provides an immersion rod type heavy oil pump, which belongs to the field of mechanical oil extraction in the petroleum industry. The utility model is located in the inner cavity of the oil pipe (2) and connected to the bottom of the sucker rod (1), which includes a pump seat (3) connected to the inner wall of the oil pipe (2) and connected with the sucker rod (1). The pump set is suspended in the oil pipe (2) through the seal anchor assembly (4); the pump set includes an upper pump barrel (5), an upper plunger (6), a lower pump barrel (7) and The lower plunger (9); the upper pump barrel (5) and the lower pump barrel (7) are threaded in series, and the pump diameter of the upper pump barrel (5) is less than the pump diameter of the lower pump barrel 7; the upper plunger (6) is connected in series with the lower plunger (9), the upper plunger (6) cooperates with the upper pump barrel (5), and the lower plunger (9) cooperates with the lower pump barrel (7); The sealing anchor assembly (4) is seated on the pump base (3).
Description
Technical field
The utility model belongs to petroleum industry mechanical oil recovery field, is specifically related to a kind of immersion Rodded thickened-oil pump.
Background technique
Main Problems when oil-field thick-oil well adopts the rod pumping pump lifting, the one because viscosity of crude is high, rod string surface friction drag is large, when descending the operation of pumping unit and sucker rod asynchronous, cause sucker rod floating, can't normally produce; The 2nd, the thick feed liquor resistance that causes of oil is large, and the filling index of oil well pump is low, affects pump efficiency.
At present for the viscous crude lifting, what the field was comparatively successful is the hydraulic feedback thick oil pump, its structural principle as shown in Figure 1, its pump barrel is composed in series by up big and down small two-stage pump barrel, be installed on down-hole oil tube string bottom, corresponding plunger also is up big and down small two-stage series connection plunger, can be lowered in the oil pipe by rod string like this, large small plunger can cooperate respectively with big or small pump barrel, realizes sealing and lifting.It adopts up big and down small two stage pump series connection, utilizes oil pipe head of liquid interior and that sleeve pipe is interior poor during down stroke, acts on the small plunger, helps sucker rod descending, thereby avoids sucker rod floating.It does not have standing valve simultaneously, can realize well cleanout and reverse cleanout, can realize during heat extraction by steam injection annotating and adopt integrated function, and have the automatic leakage functional oil, befouling environment in the time of can preventing operation.Sucker rod drives plunger and trips out first ground during the inspection pump, oil pipe and pump barrel is tripped out again.As the patent No. for 002417303 just provide so a kind of hydraulic feedback thick oil pump, it comprises the series connection of big or small double pump, have hydraulic feedback, automatically draining, annotate and adopt integrated function.
Although the hydraulic feedback thick oil pump is widely used on the thick oil well at home, its shortcoming mainly is must be by bottom little pump plunger inner chamber feed liquor, and its runner is long and narrow tiny, and the feed liquor resistance is larger, and pump efficiency is low.
Immersed thick oil pump improves for the shortcoming of common hydraulic feedback thick oil pump, its structural principle as shown in Figure 2, itself and conventional hydraulic feedback thick oil pump inverted configuration, adopt large pump at lower, little pump in upper structure, pump barrel and plunger are up-small and down-big structure, crude oil is by the inner chamber oil-feed of the large plunger of lower pump during down stroke, have the advantages that runner is large, the feed liquor resistance is little, the effect that has simultaneously hydraulic feedback power, and under pump, can connect weighted lever, can help plunger and sucker rod descending, thereby effectively solve the sucker rod retardation phenomenon.
But the immersed thick oil pump operation removes pump and must cooperate connecting-and-unconnecting device to use.Since its large pump at lower, little pump upper, its plunger assembly can not propose pump barrel, therefore plunger can't be lowered to from top to bottom with sucker rod, must shift to an earlier date being lowered to pump barrel, in order to dock with sucker rod, need supporting connecting-and-unconnecting device 10, connecting-and-unconnecting device 10 is connected on the plunger, and pump barrel is together with the oil pipe G.I.H, and 10 docking link to each other the sucker rod that is lowered to subsequently with connecting-and-unconnecting device, thereby can with transmission of power to plunger, realize lifting.Need during the inspection pump first sucker rod and connecting-and-unconnecting device 10 to be thrown off, the sucker rod that recurs out trips out oil pipe and pump barrel at last, so it is complicated to remove the pump operation, and poor reliability, rate of fault is high, and the field is less.
Rod pumping pump mainly divides sucker rod pump and tubing pump two large classes, and above-mentioned hydraulic feedback thick oil pump and immersed thick oil pump all belong to tubing pump.The pump barrel of tubing pump links to each other with oil pipe, therefore need trip out R a T when pump detection and workover, and the work operations amount is large; And the sucker rod pump pump barrel is connected with rod string, only need trip out rod string during operation, do not need lower oil tube, it is little therefore to act on workload, and because actuating oil-pumping unit load is less, small-scale workshops machine even crane can be finished, therefore effect is convenient, and expense is lower, but the sucker rod pump pump barrel needs and the tubing anchor sealing, and because pump barrel will remove, therefore need the larger diameter oil pipe in oil pipe.Most domestic adopts tubing pump, and external human cost is higher, for reducing the work operations amount, does not usually adopt tubing pump, and the overwhelming majority adopts sucker rod pump, and recent year is also progressively being promoted the use of rod-type pumping unit.
Existing sucker rod pump does not possess the hydraulic feedback function, and the sucker rod hydro-planing occurs when therefore being used for the viscous crude lifting easily, causes and can't normally produce.
The model utility content
The purpose of this utility model is to solve a difficult problem that exists in the above-mentioned prior art, a kind of immersion Rodded thickened-oil pump is provided, conventional sucker rod pump and thick oil pump structural feature are combined, maximize favourable factors and minimize unfavourable ones, be used for the viscous crude lifting and can have the feed liquor resistance that prevents that sucker rod is floating, reduce thick oil pump, improve application reliability, reduce simultaneously the workload of inspection pumping action.
The utility model is achieved through the following technical solutions:
A kind of immersion Rodded thickened-oil pump, described immersion Rodded thickened-oil pump is arranged in the inner chamber of oil pipe 2, and be connected to the bottom of sucker rod 1, and it comprises the pump seat 3 that is connected to oil pipe 2 inwalls and the pump group that is connected with sucker rod 1, described pump group is suspended in the oil pipe 2 by sealing anchor assemblies 4; Described pump group comprises pump barrel 5, upper plug 6, lower pump barrel 7 and lower plunger 9;
Described upper pump barrel 5 adopts screw thread to be connected in series with lower pump barrel 7, and the pump footpath of upper pump barrel 5 is less than the pump footpath of lower pump barrel 7; The nominal diameter of the external diameter=pump of the intracavity diameter=plunger of pump barrel is called for short the pump footpath;
Described upper plug 6 and lower plunger 9 are connected in series, and described upper plug 6 cooperates with described upper pump barrel 5, and lower plunger 9 cooperates with described lower pump barrel 7;
The pump seat of described pump seat 3 and conventional sucker rod pump is identical, be connected on the lower inner wall of oil pipe 2, be used for and the pump group on sealing anchor assemblies 4 match, thereby described sealing anchor assemblies 4 is seated at suspension, sealing and the grappling that realizes the immersion Rodded thickened-oil pump on the pump seat 3.
Described sealing anchor assemblies 4 is installed on the outer wall of described upper pump barrel 5.
The upper end of described upper plug 6 is connected with the lower end of described sucker rod 1 after stretching out the upper-end surface of described upper pump barrel 5, and its lower end is connected with described lower plunger 9 by joint 8 after stretching out the lower end surface of described upper pump barrel 5.
The pump barrel 5 interior slips on described of described upper plug 6 form clearance seal between the inwall of its outer wall and described upper pump barrel 5, because plunger will slide in pump barrel, all rod pumps are not always the case, but the gap is very little, and the gap of 1 grade of pump is 0.01mm normally.
Described upper plug 6 has the through hole of axial direction, has on the end face thereon and pumps discharge orifice, pumps discharge orifice on this through hole in upper plug 6 is communicated with the oil pipe space of upper pump barrel 5 tops;
Have at the lower end wall of described upper plug 6 and to pump into discharge orifice, pump into discharge orifice on this through holes in upper plug 6 are communicated with the inner chamber of lower pump barrel 7;
Pump into discharge orifice above ball valve is housed, the used ball-valve structure of the utility model belongs to normal structure, comprises valve ball, valve seat and valve cover, described valve seat and valve cover are fixed on the inwall of described upper plug 6 from bottom to up successively; Described valve ball has flowing hole at described valve cover between valve seat and valve cover, so that liquid passes through.The effect of valve cover is to prevent that ball from beating too high.Fluid should pump into the through hole bottom that discharge orifice flows into upper plug 6 from described, entered the top of upper plug 6 through holes through the hole of valve seat and valve cover again, and the discharge orifice that pumps from through hole top flows in the oil pipe of top at last.
Described lower plunger 9 is multidiameter shaft structure broad in the middle small in ends, forms clearance seal between the outer wall of its large footpath section and the described lower pump barrel 7; Have the ladder hole small in ends broad in the middle of axial direction in described lower plunger 9 inside, in the diameter holes of an end that is connected with described upper plug 6, ball valve is housed, described ball valve comprises valve ball, valve seat and valve cover, the upper-end surface of large footpath section forms described valve seat, the hole wall of the diameter holes of close upper plug 6 forms valve cover, valve cover is connected with upper plug 6 by joint 8, under the side of this sector hole wall has, pump discharge orifice, describedly lower pump discharge orifice the ladder hole of lower plunger 9 is communicated with the inner chamber of lower pump barrel 7; Under the path hole wall of the other end has, pump into discharge orifice, describedly lower pump into discharge orifice the ladder hole of lower plunger 9 is communicated with the oil pipe space of lower pump barrel 7 belows.
The ladder hole of the through hole of described upper plug 6 and described lower plunger 9 is not connected.
Lower end at described lower plunger 9 is connected to weighted lever, can help sucker rod descending when down stroke.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model combines the advantage that immerses thick oil pump and sucker rod pump, adopt little pump upper, greatly pump under structure, from following large pump feed liquor, improved the feed liquor runner, reduced the feed liquor resistance, but Effective Raise oil well pump degree of filling, thus improved pump efficiency;
(2) the utlity model has hydraulic feedback, automatic leakage functional oil, prevented the operation befouling environment;
(3) the utility model adopts big or small double pump cascaded structure, utilizes the annulus area oil pumping of big or small double pump, and the interior fluid column of oil pipe acts on the lower pump plunger during down stroke, helps sucker rod descending, and the sucker rod hydro-planing occurs in the time of can effectively preventing the viscous crude lifting;
(4) the utility model adopts the sucker rod pump structure, and all pump assemblies can propose pit shaft with rod string, need not adopt connecting-and-unconnecting device, have guaranteed reliability;
Do not need lower oil tube when (5) the utility model is examined pump, operation is convenient, expense is low.
Description of drawings
Fig. 1 is the structural principle schematic representation of hydraulic feedback thick oil pump in the prior art.
Fig. 2 is the structural principle schematic representation of immersed thick oil pump in the prior art.
Fig. 3 is the structural principle schematic representation that the utility model immerses Rodded thickened-oil pump.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 3, a kind of immersion Rodded thickened-oil pump, comprise sealing anchor assemblies 4, upper pump barrel 5, upper plug 6, joint 8 (being existing), lower pump barrel 7 and lower plunger 9, sealing anchor assemblies 4 (being existing) is installed on outside the pump barrel 5, the pump footpath of upper pump barrel is less than the pump footpath of lower pump barrel, and upper pump barrel and lower pump barrel are connected in series.
Immerse Rodded thickened-oil pump and belong to rod-type pumping unit, the pump seat 3 of API standard is installed on the inwall of oil pipe 2, it shifts to an earlier date G.I.H predetermined depth place with oil pipe 2, pump barrel and plunger are lowered in the oil pipe 2 with sucker rod 1, sealing anchor assemblies 4 is installed on the outer wall on pump barrel top, and sealing anchor assemblies 4 is seated at and realizes grappling and sealing on the pump seat 3; Pump barrel and plunger adopt respectively up-small and down-big two-stage series connection structure.
Described sealing anchor assemblies 4 comprises the conical surface, black box and spring detent, and the sealing anchor assemblies is sleeved on outside the pump barrel, and two ends are fixed with screw thread up and down, and described sealing anchor assemblies 4 is carried out the API standard, and the pump seat 3 of API standard is used.The upper conical surface is seated on the pump seat 3 when going into the well, and plays location, load-bearing and auxiliary seal effect; The pump seat 3 of black box and API standard cooperates the formation sealing, prevents that liquid falls after rise on the pump; Spring detent shrinks during by pump seat, automatically opens by rear, is stuck under the pump seat, prevents that the pump group from deviating from pump barrel easily, when playing pump, on carry rod string 3-5 ton upper lifting force force spring detent to regain, the pump group can together trip out in company with sucker rod.
The immersion Rodded thickened-oil pump utilization up and down area difference of pump is pumped, and during down stroke, upper pump ball-valve is closed, and the annular space volume of pump increases up and down, pressure decreased, and lower pump ball-valve is opened, and liquid enters the up and down annular space of pump through lower pump inner flow passage under the pump; During up stroke, lower pump ball-valve is closed, the compressed volume of liquid in the annular space of pump up and down, and pressure increases, and upper pump ball-valve is opened, and liquid enters on the pump by upper pump in the annular space, finishes aspiration procedure.
Can connect weighted lever 10 below the pump plunger under the immersion Rodded thickened-oil pump, can help sucker rod descending during down stroke.Comparing increases weighted lever on the pump, can avoid making sucker rod be in pressured state, prevents rod sag distortion or dropout.
According to different pipe apertures and discharge capacity demand, various combination can be carried out according to the API standard in the pump footpath of immersing the up and down pump of Rodded thickened-oil pump.
Carrying sucker rod on direct during the inspection pump can propose whole pump group, and described pump group comprises pump barrel and plunger.
Immersion Rodded thickened-oil pump of the present utility model has improved conventional sucker rod pump greatly to the adaptability of viscous crude lifting, producing fluid level with 1000m, the immersion Rodded thickened-oil pump that adopts 63/44 specification is example, the equivalent pump directly is 45.3mm, Coefficient of discharge is 2.32, the hydraulic feedback power 15.6KN of down stroke acts on and can help sucker rod descending on the plunger, prevents that sucker rod is floating.Compare with the oil well pump of identical Theoretical flowing capacity, feed pathway increases 1.03 times, and the feed liquor resistance reduces by 45%, can improve pump efficiency 20% approximately.
Immersion Rodded thickened-oil pump inspection pump of the present utility model does not need lower oil tube, has reduced work operations amount and operation and has accounted for the product time.Take certain oil field as example, adopt the tubular type thick oil pump, need with working machine (Rig) operation inspection pump, average inspection pump accounts for 2.5 days product time, average 17139 dollars of operating cost, and adopt immersion Rodded thickened-oil pump of the present invention, operation inspection pump only needs crane (Crane) can on average examine pump to account for 1 day product time, average 673 dollars of operating cost can be saved the inspection pump and account for 1.5 days product time, saves 16073 dollars of operating costs.
The utility model belongs to a kind of oil well pump in petroleum industry mechanical oil recovery field, mainly is applicable to the lifting of highly viscous crude.Be particularly suitable for Oilfields thickened oil recovery lifting, such as Syria Tishrine, Oudeh oil field, the refined oil field etc. that reaches of Iran.
Technique scheme is a kind of mode of execution of the present utility model, for those skilled in the art, the utility model discloses on the basis of principle, be easy to make various types of improvement or distortion, and be not limited only to the described structure of the above-mentioned specific embodiment of the utility model, therefore previously described just preferred, and do not have restrictive meaning.
Claims (7)
1. one kind immerses Rodded thickened-oil pump, and it is arranged in the inner chamber of oil pipe (2), and is connected to the bottom of sucker rod (1); It is characterized in that: described immersion Rodded thickened-oil pump comprises the pump seat (3) that is connected to oil pipe (2) inwall and the pump group that is connected with sucker rod (1), and described pump group is suspended in the oil pipe (2) by sealing anchor assemblies (4); Described pump group comprises pump barrel (5), upper plug (6), lower pump barrel (7) and lower plunger (9);
Described upper pump barrel (5) adopts screw thread to be connected in series with lower pump barrel (7), and the pump footpath of upper pump barrel (5) is less than the pump footpath of lower pump barrel (7);
Described upper plug (6) and lower plunger (9) are connected in series, and described upper plug (6) cooperates with described upper pump barrel (5), and lower plunger (9) cooperates with described lower pump barrel (7);
Described sealing anchor assemblies (4) is seated on the pump seat (3).
2. immersion Rodded thickened-oil pump according to claim 1, it is characterized in that: described sealing anchor assemblies (4) is installed on the outer wall of described upper pump barrel (5).
3. immersion Rodded thickened-oil pump according to claim 2, it is characterized in that: the upper end of described upper plug (6) is connected with the lower end of described sucker rod (1) after stretching out the upper-end surface of described upper pump barrel (5), and its lower end is connected with described lower plunger (9) by joint 8 after stretching out the lower end surface of described upper pump barrel (5).
4. immersion Rodded thickened-oil pump according to claim 3 is characterized in that: described upper plug (6) slides in the pump barrel (5) on described, forms clearance seal between its outer wall and the described upper pump barrel (5);
Described upper plug (6) has the through hole of axial direction, has on the end wall thereon and pumps discharge orifice, and this hole makes the through hole in the upper plug (6) be communicated with the oil pipe space of upper pump barrel (5) top;
Have at the lower end wall of described upper plug (6) and to pump into discharge orifice;
Described pump into discharge orifice above ball valve is housed, it comprises valve ball, valve seat and valve cover, described valve seat and valve cover are fixed on the inwall of described upper plug (6) from bottom to up successively, described valve ball is between valve seat and valve cover; Have flowing hole at described valve cover.
5. immersion Rodded thickened-oil pump according to claim 4 is characterized in that: described lower plunger (9) is multidiameter shaft structure broad in the middle small in ends, forms clearance seal between the outer wall of its large footpath section and the described lower pump barrel (7);
Have the ladder hole small in ends broad in the middle of axial direction in described lower plunger (9) inside, in the diameter holes of an end that is connected with described upper plug (6), ball valve is housed, it comprises valve ball, valve seat and valve cover, the upper-end surface of large footpath section forms valve seat, the hole wall of the diameter holes of close upper plug (6) forms valve cover, and valve cover is connected with upper plug (6) by joint (8); Under having, this sector hole wall pumps discharge orifice;
Under having, the path hole wall of the other end pumps into discharge orifice.
6. immersion Rodded thickened-oil pump according to claim 5, it is characterized in that: the ladder hole of the through hole of described upper plug (6) and described lower plunger (9) is not connected.
7. according to claim 1 to 6 arbitrary described immersion Rodded thickened-oil pumps, it is characterized in that: be connected to weighted lever (10) in the lower end of described lower plunger (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216331 CN202645953U (en) | 2012-05-14 | 2012-05-14 | Immersion rod type heavy oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216331 CN202645953U (en) | 2012-05-14 | 2012-05-14 | Immersion rod type heavy oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645953U true CN202645953U (en) | 2013-01-02 |
Family
ID=47415070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220216331 Expired - Lifetime CN202645953U (en) | 2012-05-14 | 2012-05-14 | Immersion rod type heavy oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645953U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734601A (en) * | 2020-07-02 | 2020-10-02 | 中国石油天然气股份有限公司 | Downhole double-pump pre-set oil pump and oil pumping method |
| CN111734353A (en) * | 2019-03-25 | 2020-10-02 | 中国石油化工股份有限公司 | Process for replacing production string with double-pump-barrel tubular pump and detecting pump without moving string |
| CN113123950A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气股份有限公司 | Submersible electric plunger pump |
| CN114508315A (en) * | 2022-03-11 | 2022-05-17 | 辽宁华业能源技术服务有限公司 | Double-ball valve core and lifting short-circuit type continuous positive circulation valve with same |
| CN117027713A (en) * | 2023-09-21 | 2023-11-10 | 大庆瑞福佳石油科技有限公司 | A hanging oil drain |
-
2012
- 2012-05-14 CN CN 201220216331 patent/CN202645953U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734353A (en) * | 2019-03-25 | 2020-10-02 | 中国石油化工股份有限公司 | Process for replacing production string with double-pump-barrel tubular pump and detecting pump without moving string |
| CN111734353B (en) * | 2019-03-25 | 2023-12-12 | 中国石油化工股份有限公司 | Process for taking over production pipe column and checking pump by using double-pump-barrel pipe pump |
| CN113123950A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气股份有限公司 | Submersible electric plunger pump |
| CN113123950B (en) * | 2019-12-31 | 2023-02-07 | 中国石油天然气股份有限公司 | A submersible electric plunger pump |
| CN111734601A (en) * | 2020-07-02 | 2020-10-02 | 中国石油天然气股份有限公司 | Downhole double-pump pre-set oil pump and oil pumping method |
| CN111734601B (en) * | 2020-07-02 | 2024-05-28 | 中国石油天然气股份有限公司 | Downhole double pump barrel pre-set oil pump and oil pumping method |
| CN114508315A (en) * | 2022-03-11 | 2022-05-17 | 辽宁华业能源技术服务有限公司 | Double-ball valve core and lifting short-circuit type continuous positive circulation valve with same |
| CN117027713A (en) * | 2023-09-21 | 2023-11-10 | 大庆瑞福佳石油科技有限公司 | A hanging oil drain |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103133340B (en) | Gas well automatic drain plunger | |
| CN202645953U (en) | Immersion rod type heavy oil pump | |
| CN206071845U (en) | An anti-eccentric wear pump | |
| CN101469700A (en) | External valve type hydraulic self-sealing plunger oil-well pump | |
| CN204703876U (en) | A bridge-type concentric dispensing string | |
| CN205503108U (en) | Hollow lifting devices of viscous crude well side direction feed liquor | |
| CN209195663U (en) | an oil well pump | |
| CN204163964U (en) | Ring valve type hydraulic feedback oil | |
| CN201306276Y (en) | Self-cleaning sand-screening pipe pumping unit | |
| CN111021995B (en) | A mechanical pumping water drainage gas production wellhead pressurization process string | |
| CN204457675U (en) | Similar displacement pump relay lifting extracting device of oil | |
| CN110513070B (en) | Flap type downhole oil pipe hydraulic control blowout preventer | |
| CN216588553U (en) | Integrated tubular column for gas injection and dilution production of heavy oil well | |
| CN201045290Y (en) | Large hollow stem oil pumping system | |
| CN202731855U (en) | Oil pumping unit drive rodless hydraulic oil pumping system | |
| CN207485648U (en) | Fixed valve can pull out formula sand-proof oil-well pump | |
| CN201155448Y (en) | Vail external hydraulic self-sealing plunger pump | |
| CN201228628Y (en) | Anti-blocking low friction resistance seal pumping effect booster | |
| CN104747139B (en) | Hydraulic drive type oil extraction system | |
| CN202531415U (en) | Ф25mm small displacement solid plunger oil well pump | |
| CN204041041U (en) | Oil Well Stimulation Device | |
| CN204532133U (en) | A kind of piston type intelligent conversion joint | |
| CN201916170U (en) | oil well pump | |
| CN201078219Y (en) | Beam pumping unit drive type hydraulic oil pumping system without pole | |
| CN202746158U (en) | Ring seal air protection deviated well oil-well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |