CN106014342A - Oil pumping device - Google Patents
Oil pumping device Download PDFInfo
- Publication number
- CN106014342A CN106014342A CN201610308157.XA CN201610308157A CN106014342A CN 106014342 A CN106014342 A CN 106014342A CN 201610308157 A CN201610308157 A CN 201610308157A CN 106014342 A CN106014342 A CN 106014342A
- Authority
- CN
- China
- Prior art keywords
- oil
- annular space
- sand setting
- outer tube
- sand
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Abstract
The invention discloses an oil pumping device which comprises an oil well pump and a gas anchor which are sequentially connected in series. The oil well pump comprises a pump cylinder assembly, a plunger assembly and a fixing valve assembly. Both the plunger assembly and the fixing valve assembly are located in the pump cylinder assembly. The gas anchor connected with the oil well pump comprises a center pipe, an inner pipe arranged outside the center pipe in a sleeving manner and an outer pipe arranged outside the inner pipe in a sleeving manner. A first sand setting annulus is arranged between the center pipe and the inner pipe. An oil inflow annulus is arranged between the outer pipe and the inner pipe. Oil inflow meshes communicating with the oil inflow annulus are formed in the outer pipe. The lower end of the center pipe and the lower end of the inner pipe are connected through a first two-way joint. The interior of the center pipe communicates with the oil inflow annulus through the first two-way joint to form an oil inflow channel. The oil inflow channel and the first sand setting annulus are separated through the first two-way joint.
Description
Technical field
The application relates to oil field equipment technical field, particularly relates to a kind of oil rig.
Background technology
Combustion in situ is to utilize various sparking mode that the oil reservoir in gas injection well is lighted, and continues to inject air or oxygen in oil reservoir
Gas, makes oil reservoir burning constantly spread expansion, crude oil is driven onto producing well.Air is measured owing to fireflood gas injection well constantly injects people,
Producing well is the most also blast pit, and gas production is high, and some fire is driven oil recovery block oil well and inherently be there is the problem shaked out, do not having
The sand-preventing pump of heavy anti-one is used to maintain oil well normally to produce when using fireflood exploitation.But after turning fireflood production, life of partly shaking out
Producing well tail gas amount to gradually rise, situation of shaking out has been aggravated, and forms the compound contradiction of the high gassiness that shakes out, existing sand-preventing pump
In terms of gas-tight, there is bigger technical limitation, after substantial amounts of gas enters pump, reduce pump efficiency, affect oil well and normally produce,
And along with the prolongation of fireflood production time, the tail gas amount of producing well can be gradually increased, and the problem of gases affect pump efficiency becomes increasingly conspicuous.
Existing gas anchor can not be applied in combination with the sand-preventing pump of heavy anti-one, can only be applied in combination with common sand-preventing pump, although can alleviate
Oil well pump is by gases affect, but owing to fireflood is shaked out seriously, oil well output is low, part sand grains is difficult to take to ground with liquid stream, depends on
The problem that so there is sand card.It is to say, existing technology or sand control capability is good, or gas-tight performance is good, it is difficult to the two has
Machine is applied in combination.
Summary of the invention
In order to solve the technical problem that when existing sand-preventing pump is applied in combination, sand control gas-tight effect is bad with gas anchor, the invention provides
A kind of oil rig.This oil rig can make crude oil carry out Oil-gas Separation before entering pump, enter sands-proof check after pump, it is achieved fireflood is high
Gassiness shakes out the normal production of producing well.
The application be the technical scheme is that a kind of oil rig by the above-mentioned technical problem of solution, including the oil pumping of sequential concatenation
Pump and gas anchor；Wherein,
Described oil well pump includes pump barrel assembly, plunger assembly, standing valve assembly；Described plunger assembly and described standing valve group
Part is respectively positioned in described pump barrel assembly；
Described gas anchor includes central canal, the inner tube being sheathed on outside central canal and the outer tube being sheathed on outside inner tube；Described central canal
And it is provided with the first sand setting annular space between said inner tube；Oil-feed annular space it is provided with between described outer tube and said inner tube；Set on described outer tube
There is the oil-feed sieve aperture being passed through described oil-feed annular space；The lower end of described central canal is with the lower end of said inner tube by the first duplex fitting even
Connect；The inside of described central canal and described oil-feed annular space connect formation oil inlet passage by described first duplex fitting, and described first
Described oil inlet passage is separated by duplex fitting with described first sand setting annular space.
As one preferred embodiment, described first duplex fitting includes:
The first noumenon that lengthwise extends；
Being opened in the first passage on described the first noumenon, described first passage is by the inside of described central canal and described oil-feed annular space
Connection；
Being opened in the second channel on described the first noumenon, described second channel connects to let out with described first sand setting annular space
Sand.
As one preferred embodiment, described first passage includes the slotted eye extended in the same direction with described the first noumenon and is located at
Through hole on the wall of described the first noumenon；Described the first noumenon is not run through by described slotted eye, described through hole by described slotted eye with described
Oil-feed annular space connects；The described the first noumenon of part radially expands formation raised step；Described second channel includes along described first
The through hole that described raised step is run through by body bearing of trend；Described through hole is separated from each other with described slotted eye.
As one preferred embodiment, it is provided with centering ring between upper end and the said inner tube of described outer tube；Described central canal
Lower end is connected by variable buckle joint with described first duplex fitting；The lower end of described first duplex fitting connects sand sediment pipe；Described
Described sand sediment pipe is connected by second channel with described first sand setting annular space；The lower end of the lower end of described sand sediment pipe and described outer tube is divided
Do not connect inwall and the outer wall of a lower contact；The lower end of described lower contact is provided with the plug blocked.
As one preferred embodiment, the upper end of said inner tube is provided with the upper box cupling connecting described pump barrel assembly；Described center
The upper end of pipe is provided with sealing ring, and described central canal communicates with described standing valve assembly.
As one preferred embodiment, described pump barrel assembly includes pump barrel and the sand setting outer tube being sheathed on outside described pump barrel；
The second sand setting annular space it is provided with between described pump barrel and described sand setting outer tube；Described second sand setting annular space and described first sand setting annular space phase
Logical.
As one preferred embodiment, described plunger assembly include the righting joint of sequential concatenation, pull bar, upward-traveling valves,
Plunger tube, lower travelling valve；The upper end of described sand setting outer tube is connected by outer tube box cupling upper tubing nipple, described righting joint edge
The radially expanded righting being formed near described upper tubing nipple inwall is protruding；Described upper tubing nipple upper end is provided with box cupling, box cupling
It is provided with helmet.
As one preferred embodiment, the external diameter of described plunger assembly is constant by described upward-traveling valves to described lower travelling valve.
As one preferred embodiment, the most inwardly protruding formation of described outer tube box cupling is strike-off projection, described in scrape
Sand projection is positioned at the top of described second sand setting annular space.
As one preferred embodiment, the upper end of described standing valve assembly is fixing with pump barrel to be connected, described standing valve group
The lower end of part is connected by the second duplex fitting with sand setting outer tube.
As one preferred embodiment, described standing valve assembly includes first standing valve and second of sequential concatenation admittedly
Determine valve.
As one preferred embodiment, described second duplex fitting includes:
The second body that lengthwise extends；
Described second body extends along the third channel that direction is run through, and described third channel is for the upper end of described central canal
Stretch into input fluid；
Being located on the wall of described second body the fourth lane run through, described fourth lane is by the first sand setting annular space and the second sand setting ring
Empty connection.
As one preferred embodiment, the surface of at least part of described pump barrel assembly is provided with the coating of corundum material.
As one preferred embodiment, the thickness of described coating is more than or equal to 1.5 millimeters, and hardness is more than or equal to 1200HV.
By above technical scheme it can be seen that the application is by arranging the first sand setting annular space, in oil well pump in gas anchor
Sand grains flows into, and arranges the first duplex fitting separated with described first sand setting annular space by described oil inlet passage in gas anchor, it is ensured that
Sand grains in first sand setting annular space will not enter crude oil and pollute crude oil, and therefore, the oil rig of present embodiment can make former
Oil carries out Oil-gas Separation before entering pump, enters sands-proof check after pump, it is achieved fireflood height gassiness shakes out the normal production of producing well.
With reference to explanation hereinafter and accompanying drawing, disclose in detail only certain exemplary embodiments of this invention, the principle specifying the present invention is permissible
Adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In claims
Spirit and terms in the range of, embodiments of the present invention include many changes, revise and be equal to.
Describe for a kind of embodiment and/or the feature that illustrates can be in same or similar mode one or more other
Embodiment uses, combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term " includes/comprises " existence referring to feature, one integral piece, step or assembly herein when using, but not
Get rid of the existence of one or more further feature, one integral piece, step or assembly or additional.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or prior art
In description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only the one of the present invention
A little embodiments, for those skilled in the art, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.
Fig. 1 is the Part I structural representation of the oil well pump of the application oil rig；
Fig. 2 is the Part I structural representation of the oil well pump of the application oil rig；
Fig. 3 is the Part I structural representation of the oil well pump of the application oil rig；
Fig. 4 is the Part I structural representation of the oil well pump of the application oil rig；
Fig. 5 is the gas anchor structural representation of the application oil rig；
Fig. 6 is the first duplex fitting structural representation of gas anchor shown in Fig. 5；
Fig. 7 is the first duplex fitting A-A generalized section shown in Fig. 6.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, below in conjunction with in the embodiment of the present application
Accompanying drawing, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained on the premise of not making creative work, all should belong to the model of present invention protection
Enclose.
It should be noted that be referred to as " being arranged at " another element when element, it can directly on another element or
Element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can be directly to separately
One element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", "left", "right"
And similar statement is for illustrative purposes only, being not offered as is unique embodiment.
Unless otherwise defined, the technology people of all of technology used herein and scientific terminology and the technical field belonging to the present invention
The implication that member is generally understood that is identical.The term used the most in the description of the invention is intended merely to describe concrete enforcement
The purpose of mode, it is not intended that in limiting the present invention.Term as used herein "and/or" includes one or more relevant
Arbitrary and all of combination of Listed Items.
In conjunction with the structure of oil well pump self, it is in the purpose of clear display, oil well pump is divided into four by the application along its length
Individual accompanying drawing is shown, the part oil rig shown by Fig. 1 to Fig. 4 combines in order and is complete oil pumping pump structure and shows
It is intended to.
Referring to Fig. 1 to Fig. 7, a kind of embodiment of the application provides a kind of oil rig, including the oil well pump of sequential concatenation
And gas anchor；Wherein, described oil well pump includes pump barrel assembly, plunger assembly, standing valve assembly；Described plunger assembly and described
Standing valve assembly is respectively positioned in described pump barrel assembly；Described gas anchor include central canal 100, be sheathed on outside central canal 100 interior
Pipe 102 and the outer tube 105 being sheathed on outside inner tube 102；It is provided with first between described central canal 100 and said inner tube 102
Sand setting annular space 103；It is provided with oil-feed annular space 106 between described outer tube 105 and said inner tube 102；Described outer tube 105 is provided with
It is passed through the oil-feed sieve aperture 1051 of described oil-feed annular space 106；The lower end of described central canal 100 is passed through with the lower end of said inner tube 102
First duplex fitting 108 connects；The inside of described central canal 100 and described oil-feed annular space 106 are by described first duplex fitting
108 connections form oil inlet passages, described first duplex fitting 108 by described oil inlet passage and described first sand setting annular space 103 every
Open.
During production, the oil rig of present embodiment is connected with sucker rod (not shown), oil pipe formation pumping pipe string and is lowered into
In well, wherein, sucker rod is connected with plunger assembly, and then drives plunger assembly up-down stroke, completes oil pumping.Oil pumping process
In, crude oil (alternatively referred to as fluid) first passes through gas anchor and carries out gas-liquid separation, when carrying out gas-liquid separation, crude oil first pass through into
Oil screen hole 1051 enters oil-feed annular space 106, and gas is discharged by crude oil descending dependence " Gravity Separation " in oil-feed annular space 106,
Crude oil moves that to enter central canal 100 to the first duplex fitting 108 internal until oil well pump.During oil pumping, in standing valve assembly
Valve ball (being referred to as valve ball) is contrary with the valve ball sealed condition in plunger assembly, and when upstroke, plunger assembly is in
Sealed condition, standing valve assembly is in open mode, and when down stroke, plunger assembly is in open mode, standing valve group
Part is in sealed condition.Meanwhile, between described central canal 100 and said inner tube 102, it is provided with the first sand setting annular space 103, due to
Gas anchor is arranged at the lower section of oil well pump, and the sand grains in oil well pump can move to the first sand setting annular space 103 and be collected, and then,
Oil well pump just will not accumulate too much sand and sand card problem occurs.
By above technical scheme it can be seen that the application is by arranging the first sand setting annular space 103, for oil well pump in gas anchor
In sand grains flow into, and the first bilateral by described oil inlet passage and described first sand setting annular space 103 separate be set in gas anchor connect
108, it is ensured that the sand grains in the first sand setting annular space 103 will not enter crude oil and pollute crude oil, therefore, present embodiment
Oil rig can make crude oil carry out Oil-gas Separation before entering pump, enter sands-proof check after pump, it is achieved fireflood height gassiness shakes out producing well
Normal production.
Referring to Fig. 6, Fig. 7, in the present embodiment, described first duplex fitting 108 may include that lengthwise extends
One body 1081；Being opened in the first passage on described the first noumenon 1081, described first passage is by described central canal 100
Internal and described oil-feed annular space 106 connects；It is located at the second channel on described the first noumenon 1081, described second channel and institute
State the first sand setting annular space 103 to connect to carry out letting out sand.
Concrete, described first passage can include the slotted eye 1085 extended in the same direction with described the first noumenon 1081 and be located at institute
State the through hole 1084 on the wall of the first noumenon 1081.Wherein, described the first noumenon 1081 is not run through by described slotted eye 1085,
Described slotted eye 1085 is connected by described through hole 1084 with described oil-feed annular space 106.The described the first noumenon of part 1081 can edge
Radially expanded formation raised step 1083.Described second channel can include described along described the first noumenon 1081 bearing of trend
The through hole 1082 that raised step 1083 runs through.Described through hole 1082 is separated from each other with described slotted eye 1085.
As shown in Figure 6, described through hole 1084 is elongated hole, and it has two and is symmetrical arranged.Certainly through hole 1084 can also set
Being set to other numbers, the application is not restricted.Described raised step 1083 is formed for described through hole 1082, meanwhile, and institute
State through hole 1084 do not form the end of described raised step 1083 can be as connecting portion.Described through hole 1082 is also elongated hole
Structure (cross section is long hole shape), its number is two, and for being symmetrical arranged.Described through hole 1082 and described slotted eye 1085
Separated from each other be possible to prevent through hole 1082 in the sand grains that flows through be mixed in fluid, cause oil contamination.Through hole 1082 upper
Port and the first sand setting annular space 103 communicate, and lower port can be passed through the outside of oil rig, it is also possible to be passed through oil rig other
The inside of parts.
Certainly, described first passage is not limited to above-mentioned structure, and it can be the arbitrary shape being arranged on the first noumenon 1081
The passage of columnar structure, certainly, through hole 1082 is also not limited to above-mentioned structure.In the present embodiment, first is only needed to lead to
Between road and through hole 1082 mutually isolated, first passage connects internal for central canal 100 with oil-feed annular space 106, through hole
1082 connect with the first sand setting annular space 103.
As it is shown in figure 5, centering ring 104 can be provided with between the upper end of described outer tube 105 and said inner tube 102.Described center
The lower end of pipe 100 is connected by variable buckle joint 107 with described first duplex fitting 108.Described first duplex fitting 108 times
End connection has sand sediment pipe 110.Described sand sediment pipe 110 is connected by described second channel with described first sand setting annular space 103.Institute
The lower end of the lower end and described outer tube 105 of stating sand sediment pipe 110 is connected inwall and the outer wall of a lower contact 111 respectively；Connect under described
The lower end of head is provided with the plug 112 blocked.
Wherein, centering ring 104 is sheathed on outside inner tube 102, and the upper end of outer tube 105 is sealed righting, certainly, outer tube 105
Upper end it is not absolutely required to seal request, and centering ring 104 can be only by outer tube 105 righting.The sidewall of outer tube 105 is close
The region of upper end is provided with oil-feed sieve aperture 1051, and oil-feed sieve aperture 1051 is multiple, can be in the uniform setting of the circumference of outer tube 105.
This allows for, and oil-feed annular space 106 is internal with central canal 100 to be connected in bottom, by oil-feed sieve aperture 1051 is arranged on outer tube
The upper area of 105 so that fluid enters and relies on after oil-feed annular space 106 gravity to move down, by action of gravity by gas by
Crude oil is separated.Certainly, oil-feed annular space 106 can also be provided with spiral separator (not shown), to carry further
High gas-liquid separation effect.
In the present embodiment, central canal 100 is connected by variable buckle joint 107 with the first duplex fitting 108, wherein, by becoming
Buckle joint 107 can convert the internal diameter of oil inlet passage.As it is shown in figure 5, the upper end of variable buckle joint 107 is provided with external screw thread, enter
And be connected with the female thread of central canal 100 lower end.The lower end of variable buckle joint 107 is provided with female thread, and then connects with the first bilateral
The external screw thread of the upper end of 108 is connected.
In the present embodiment, sand sediment pipe 110, lower contact 111 are nested structure (being referred to as structure of tube body), sand setting
Pipe 110, lower contact 111 are formed with plug 112 and deposit sand space.Sand grains in oil rig through the first sand setting annular space 103, pass through
Perforation 1082 entrance is deposited in sand space.Wherein, sand sediment pipe 110 is by sub-coupling 109 and the first duplex fitting 108 times
Hold threaded.The upper end of lower contact 111 is between sand sediment pipe 110 and outer tube 105.The lower end of lower contact 111 be provided with
The external screw thread that plug 112 connects, the port of lower contact 111 is blocked by plug 112.
In the present embodiment, for ease of the connection of oil well pump Yu gas anchor, it is described that the upper end of said inner tube 102 can be provided with connection
The upper box cupling 101 of pump barrel assembly, and then, the first sand setting annular space 103 between inner tube 102 and central canal 100 can accept pump
The gravel that cartridge module flows down.The upper end of described central canal 100 can be provided with sealing ring 113, and described central canal 100 is solid with described
Determine valve assembly to communicate.The lower end of central canal 100 with standing valve (being referred to as standing valve) is sealed even by sealing ring 113
Connect, prevent crude oil from revealing.
Refer to Fig. 1 to Fig. 4, by the structural representation of the oil well pump that a kind of embodiment of the application is provided.At this oil well pump
In, described oil well pump includes pump barrel assembly, plunger assembly, standing valve assembly；Described plunger assembly and described standing valve group
Part is respectively positioned in described pump barrel assembly.Wherein, plunger assembly can carry out up-down stroke in pump barrel assembly, with standing valve group
Part matches and pumps.
In the present embodiment, described pump barrel assembly can include pump barrel 12 and be sheathed on outside the sand setting outside described pump barrel 12
Pipe 11.The second sand setting annular space 27 it is provided with between described pump barrel 12 and described sand setting outer tube 11.Described second sand setting annular space 27 with
Described first sand setting annular space 103 communicates.Wherein, pump barrel 12 as shown in Figure 3 can be by a stay tube 15 and standing valve assembly
Connecting, concrete, the lower end of pump barrel 12 is connected by pump barrel box cupling 14 with standing valve assembly.
Producing for more preferably adapting to fireflood, the surface of at least part of described pump barrel assembly is provided with the coating of corundum material.Optionally,
The thickness of described coating is more than or equal to 1.5 millimeters, and hardness is more than or equal to 1200HV.Concrete, the inner surface at pump barrel 12 can
To arrange shown coating.It is low that this kind arranges processing cost, can preferably meet the condition required for fireflood, and then thick for fireflood etc.
Oil exploitation provides reliable technical support, and forms a set of sand control, gas-tight, etch-proof efficient, the DP technology of high yield.
In the present embodiment, described plunger assembly can include the righting joint 5 of sequential concatenation, pull bar 6, upward-traveling valves,
Plunger tube 13, lower travelling valve.The upper end of described sand setting outer tube 11 is connected by outer tube box cupling 9 upper tubing nipple 3.Described
Righting joint 5 radially expands the righting projection 4 being formed with close described upper tubing nipple 3 inwall.Described upper tubing nipple 3
Upper end is provided with box cupling 2.Box cupling 2 is provided with helmet 1.
Wherein, upper tubing nipple 3 inwall can be strike-off by righting projection 4 near upper tubing nipple 3 inwall, the sand wiped off
Grain is in the second sand setting annular space 27 enters the first sand setting annular space 103.Plunger assembly has double travelling valve, naturally it is also possible to tool
Standby more, or one, the application is not limited thereto.In double travelling valves, upward-traveling valves, lower travelling valve and standing valve group
Part matches and can complete Pumping action.
Concrete, upward-traveling valves can include the first valve ball 8 and the first valve seat 10 taken a seat for valve ball 8.First valve seat 10
Upper end can be provided with the plunger top connection 7 of cylinder lever connecting rod 6.The lower end of the first valve seat 10 can be provided with the post connecting pump barrel 13
Plug joint 28.
Lower travelling valve can include the second valve ball 17 and the second valve seat 18 taken a seat for the second valve ball 17.This second valve seat 18
Upper end be provided with travelling valve bonnet 16, with the motion to the second valve ball 17 carry out spacing and allow crude oil pass through.Second valve seat 18
Lower end is threaded plunger lower contact (sign).Can be against on standing valve assembly when plunger lower contact moves down.
The external diameter of described plunger assembly is constant by described upward-traveling valves to described lower travelling valve.The inside of described outer tube box cupling 9 is along footpath
Strike-off projection (sign) to inwardly protruding formation, described in projection of strike-ofing be positioned at the top of described second sand setting annular space 27.Wherein,
The part by described upward-traveling valves to described lower travelling valve of described plunger assembly can be strike-off by projection of strike-ofing, the sand scraped
Grain can be in the second sand setting annular space 27 flows into the first sand setting annular space 103.
The upper end of described standing valve assembly is fixing with pump barrel 12 to be connected.The lower end of described standing valve assembly and sand setting outer tube 11
Connected by the second duplex fitting 24.Described standing valve assembly includes that first standing valve and second of sequential concatenation is fixed
Valve.Wherein, the first standing valve includes standing valve cover the 19, the 3rd valve ball the 20, the 3rd valve seat 21.3rd valve ball 20
In space between upper standing valve cover 19 and the 3rd valve seat 21.Upper standing valve cover 19 is screwed with a stay tube 15 and is connected.
Second standing valve includes lower standing valve cover the 29, the 4th valve ball 22 and the 4th valve seat 23.4th valve seat 23 and the second bilateral
Joint 24 connects by fixed valve base joint 30 is fixing, and lower standing valve cover 29 is fixing with the 3rd valve seat 21 to be connected.Second bilateral
The lower end of joint 24 can connect filter screen centralizer 25 and lower tubing nipple 26.Filter screen centralizer 25 is sheathed on lower oil pipe
Outside pipe nipple 26.Threaded with the upper box cupling 101 of gas anchor in the lower end of lower tubing nipple 26.
Concrete, described second duplex fitting 24 may include that the second body that lengthwise extends；By described second body along it
The third channel 241 that bearing of trend is run through, described third channel 241 stretches into for the upper end of described central canal 100 with input
Fluid；Being located on the wall of described second body the fourth lane 242 run through, described fourth lane 242 is by the first sand setting annular space 103
Connect with the second sand setting annular space 27.
Wherein, the bearing of trend of the second body and the first noumenon 1081 can be in the same direction, but except for the difference that, the of the second body
It is all run through by triple channel 241 and fourth lane 242 up and down.The upper end of central canal 100 is stretched in third channel 241, center
Sealing ring sheathed on pipe 100, thus will seal between outer wall and the inwall of the second body of central canal 100.
Certainly, described third channel 241 is not limited to above-mentioned structure, and it can be the arbitrary shape being arranged on the second body
The passage of structure, certainly, fourth lane 242 is also not limited to above-mentioned structure.In the present embodiment, third channel is only needed
Between 241 and fourth lane 242 mutually isolated, third channel 241 connects internal for central canal 100 with standing valve assembly,
Second sand setting annular space 27 is connected by fourth lane 242 with the first sand setting annular space 103.
During carrying on plunger assembly, due to top head of liquid so that upward-traveling valves and lower travelling valve are closed, and then can be by post
The crude oil in portion upwards carries beyond the Great Wall, the crude oil extraction of well head.Simultaneously between plunger assembly and pump barrel assembly, owing to carrying on plunger assembly,
Can produce a vacuum chamber, produce a suction, standing valve assembly (valve ball and valve seat) is opened, thus, by oil well pump
Lower section Inhaling Crude Oil enters vacuum chamber.Down stroke makes, and plunger assembly is transferred, and vacuum chamber is compressed, when upward-traveling valves and lower travelling
The valve ball of valve is opened, and standing valve assembly is closed.
During operation, oil well pump bottom is connected the upper box cupling of gas anchor, screws so that central canal 100 and the oil well pump bottom of gas anchor
Joint docks, and wherein, the cushion rubber (one of sealing ring) of central canal 100 upper end has sealing function.To adopt after assembling
Oil instrument G.I.H in the lump.
Again plunger top connection is connected, with sucker rod G.I.H with first sucker rod above oil well pump.When plunger assembly enters
When entering pump barrel assembly, completing into pump, above carry dead space (carrying 700mm on every 1000 meters), carry out oil pipe pressure test, 3MP does not drops,
Rise and take out.When normally working, plunger assembly does upper and lower reciprocating motion with the motion of upper sucker rod in pump barrel assembly.Upstroke
Time, the closedown of upward-traveling valves, lower travelling valve, the unlatching of standing valve assembly, in oil well pump, fluid is by the oil-feed sieve aperture of the outer tube of gas anchor
The 1051 oil-feed annular spaces 106 entering gas anchor, then entered in central canal 100 by duplex fitting.Liquid is adopted to pump barrel assembly
End, liquid in oil well pump is drained in the oil pipe on oil well pump by plunger assembly, wherein, between pump barrel 12 and sand setting outer tube 11 is
Sand setting passage.Meanwhile, in well, liquid is under oil well pump inlet pressure difference effect, enters through standing valve assembly and is full of oil pumping
Pump lower chambers.During down stroke, standing valve assembly is closed, and upward-traveling valves and lower travelling valve are opened, the liquid of oil well pump lower chambers
Oil well pump upper chamber is transferred to through upward-traveling valves and lower travelling valve.The upper and lower continuous reciprocating motion of plunger assembly, just by continuous for well liquid
Be pumped into well head, enter gathering system.
Herein cited any digital value all includes between lower limit to higher limit with the lower value of an incremented and upper value
, between any lower value and any much higher value, there is the interval of at least two unit in all values.For example, if illustrated
The quantity of one parts or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 to
80, more preferably from 30 to 70, then list such as 15 to 85,22 during purpose illustrates that this description the most clearly and arrive
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think unit be 0.0001,0.001,0.01,
0.1.These only want the example clearly expressed, it is believed that all of the numerical value enumerated between minimum and peak can
Can combination be expressly set forth in this description the most in a similar manner.
Except as otherwise noted, all scopes all include all numerals between end points and end points." big with what scope was used together
About " or " approximation " is suitable for two end points of this scope.Thus, " about 20 to 30 " are intended to cover that " about 20 to big
About 30 ", the end points indicated at least is included.
The all articles disclosed and reference material, including patent application and publication, pass through to quote to be hereby incorporated by for various purposes.
Describe combination term " substantially by ... constitute " should include determined by element, composition, parts or step and substantially do not have
Have an impact other elements, composition, parts or the step of the basic novel feature of this combination.Term is used " to comprise " or " including "
The combination of element here, composition, parts or step is described it is also contemplated that basic by these elements, composition, parts or step
The embodiment constituted.Here by use term " can ", it is intended to described any attribute that " permissible " includes is described
It is all optional.
Multiple elements, composition, parts or step can be provided by single integrated component, composition, parts or step.Alternatively,
Single integrated component, composition, parts or step can be divided into multiple elements, composition, parts or the step of separation.It is used for retouching
The open "a" or "an" stating element, composition, parts or step is not said to get rid of other element, composition, portion
Part or step.
It should be understood that above description is to illustrate rather than to limit.By reading foregoing description,
Many embodiments outside the example provided and many application the most all will be apparent from.Cause
This, the scope of this teaching should not determine with reference to foregoing description, but should want with reference to claims and these rights
The four corner seeking had equivalent determines.Patent application and public affairs are included for comprehensive purpose, all articles and reference
The disclosure accused all is passed through with reference to being incorporated herein.Any aspect of theme disclosed herein is omitted not in aforementioned claim
It is to abandon this body contents, also should not be considered as inventor and this theme is not thought of as one of disclosed invention theme
Point.
Claims (14)
1. an oil rig, it is characterised in that include oil well pump and the gas anchor of sequential concatenation；Wherein,
Described oil well pump includes pump barrel assembly, plunger assembly, standing valve assembly；Described plunger assembly and described standing valve group
Part is respectively positioned in described pump barrel assembly；
Described gas anchor includes central canal, the inner tube being sheathed on outside central canal and the outer tube being sheathed on outside inner tube；Described central canal
And it is provided with the first sand setting annular space between said inner tube；Oil-feed annular space it is provided with between described outer tube and said inner tube；Set on described outer tube
There is the oil-feed sieve aperture being passed through described oil-feed annular space；The lower end of described central canal is with the lower end of said inner tube by the first duplex fitting even
Connect；The inside of described central canal and described oil-feed annular space connect formation oil inlet passage by described first duplex fitting, and described first
Described oil inlet passage is separated by duplex fitting with described first sand setting annular space.
2. oil rig as claimed in claim 1, it is characterised in that described first duplex fitting includes
The first noumenon that lengthwise extends；
Being opened in the first passage on described the first noumenon, described first passage is by the inside of described central canal and described oil-feed annular space
Connection；
Being opened in the second channel on described the first noumenon, described second channel connects to let out with described first sand setting annular space
Sand.
3. oil rig as claimed in claim 2, it is characterised in that described first passage includes same with described the first noumenon
To extend slotted eye and be located at the through hole on the wall of described the first noumenon；Described the first noumenon is not run through by described slotted eye, described
Described slotted eye is connected by through hole with described oil-feed annular space；The described the first noumenon of part radially expands formation raised step；Described
Two passages include the through hole described raised step run through along described the first noumenon bearing of trend；Described through hole and described slotted eye
Separated from each other.
4. oil rig as claimed in claim 2, it is characterised in that be provided with between upper end and the said inner tube of described outer tube
Centering ring；The lower end of described central canal is connected by variable buckle joint with described first duplex fitting；Under described first duplex fitting
End connection has sand sediment pipe 110；Described sand sediment pipe 110 is connected by described second channel with described first sand setting annular space；Described heavy
The lower end of sandpipe 110 is connected inwall and the outer wall of a lower contact respectively with the lower end of described outer tube；The lower end of described lower contact is provided with
The plug blocked.
5. oil rig as claimed in claim 1, it is characterised in that the upper end of said inner tube is provided with the described pump barrel group of connection
The upper box cupling of part；The upper end of described central canal is provided with sealing ring, and described central canal communicates with described standing valve assembly.
6. oil rig as claimed in claim 1, it is characterised in that described pump barrel assembly includes pump barrel and is sheathed on
Sand setting outer tube outside described pump barrel；The second sand setting annular space it is provided with between described pump barrel and described sand setting outer tube；Described second sand setting ring
Empty and described first sand setting annular space communicates.
7. oil rig as claimed in claim 6, it is characterised in that described plunger assembly includes that the righting of sequential concatenation connects
Head, pull bar, upward-traveling valves, plunger tube, lower travelling valve；The upper end of described sand setting outer tube is connected by outer tube box cupling upper oil pipe
Pipe nipple, it is protruding that described righting joint radially expands the righting being formed with near described upper tubing nipple inwall；Described upper oil pipe is short
Joint upper end is provided with box cupling, and box cupling is provided with helmet.
8. oil rig as claimed in claim 7, it is characterised in that the external diameter of described plunger assembly is by described upward-traveling valves
Constant to described lower travelling valve.
9. oil rig as claimed in claim 7, it is characterised in that described outer tube box cupling the most inwardly protruding
Formation is strike-off projection, described in projection of strike-ofing be positioned at the top of described second sand setting annular space.
10. oil rig as claimed in claim 7, it is characterised in that the upper end of described standing valve assembly is fixed with pump barrel
Connecting, the lower end of described standing valve assembly is connected by the second duplex fitting with sand setting outer tube.
11. oil rigs as claimed in claim 1, it is characterised in that described standing valve assembly includes the of sequential concatenation
One standing valve and the second standing valve.
12. oil rigs as claimed in claim 10, it is characterised in that described second duplex fitting includes:
The second body that lengthwise extends；
Described second body extends along the third channel that direction is run through, and described third channel is for the upper end of described central canal
Stretch into input fluid；
Being located on the wall of described second body the fourth lane run through, described fourth lane is by the first sand setting annular space and the second sand setting ring
Empty connection.
13. oil rigs as claimed in claim 1, it is characterised in that the surface of at least part of described pump barrel assembly is provided with just
The coating of beautiful material.
14. oil rigs as claimed in claim 13, it is characterised in that the thickness of described coating is more than or equal to 1.5 millimeters,
Hardness is more than or equal to 1200HV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308157.XA CN106014342A (en) | 2016-05-11 | 2016-05-11 | Oil pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308157.XA CN106014342A (en) | 2016-05-11 | 2016-05-11 | Oil pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106014342A true CN106014342A (en) | 2016-10-12 |
Family
ID=57099364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610308157.XA Pending CN106014342A (en) | 2016-05-11 | 2016-05-11 | Oil pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014342A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080646A (en) * | 2011-03-03 | 2011-06-01 | 中国石油天然气股份有限公司 | Layer mining anti-gas pump for pumping well |
| CN202926293U (en) * | 2012-09-12 | 2013-05-08 | 鞍山红拖轧钢有限公司 | Fully-automatic hydraulic oil pumping machine |
| CN103541887A (en) * | 2013-09-16 | 2014-01-29 | 中国石油天然气股份有限公司 | Sand-preventing gas-preventing integrated oil production device |
-
2016
- 2016-05-11 CN CN201610308157.XA patent/CN106014342A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080646A (en) * | 2011-03-03 | 2011-06-01 | 中国石油天然气股份有限公司 | Layer mining anti-gas pump for pumping well |
| CN202926293U (en) * | 2012-09-12 | 2013-05-08 | 鞍山红拖轧钢有限公司 | Fully-automatic hydraulic oil pumping machine |
| CN103541887A (en) * | 2013-09-16 | 2014-01-29 | 中国石油天然气股份有限公司 | Sand-preventing gas-preventing integrated oil production device |
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Application publication date: 20161012 |