CN109707586A - Auxiliary agent filling apparatus and method are realized using natural gas well oil jacket pressure difference - Google Patents

Auxiliary agent filling apparatus and method are realized using natural gas well oil jacket pressure difference Download PDF

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Publication number
CN109707586A
CN109707586A CN201811339751.0A CN201811339751A CN109707586A CN 109707586 A CN109707586 A CN 109707586A CN 201811339751 A CN201811339751 A CN 201811339751A CN 109707586 A CN109707586 A CN 109707586A
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sliding block
auxiliary agent
gas
air rammer
cylinder
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CN201811339751.0A
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CN109707586B (en
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李跃
杨冠林
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DONGYING GUANLIN PETROLEUM TECHNOLOGY Co.,Ltd.
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李跃
杨冠林
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Abstract

Auxiliary agent filling apparatus and method are realized using natural gas well oil jacket pressure difference the present invention relates to a kind of.Its technical solution is: including gas-powered head (a), connecting shaft (b), auxiliary agent booster pump (c), the gas-powered head (a) passes through connecting shaft (b) connection auxiliary agent booster pump (c), oil jacket natural gas pressure difference energy is converted to driving force by gas-powered head (a), and is pressurized by the power drive auxiliary agent booster pump (c) that connecting shaft (b) is transmitted to auxiliary agent;Beneficial effect is: for the present invention using production pipeline is discharged into after driving air work, zero leakage, zero-emission do not influence the operation of equipment although driving gas is inflammable and explosive medium, inexhaustible as long as gas well liquid loading;In addition, High Pressure Difference gas drive pump is ingenious in design, oil jacket pressure difference is rationally utilized, power supply is not necessarily to, well head is facilitated to fill;Driving head is high pressure resistant, and driving gas is high pressure, handles without pressure regulation, can facilitate realization automation filling with matched block combiner.

Description

Auxiliary agent filling apparatus and method are realized using natural gas well oil jacket pressure difference
Technical field
The present invention relates to a kind of auxiliary agent filling apparatus and methods, in particular to a kind of to be realized using natural gas well oil jacket pressure difference Auxiliary agent filling apparatus and method.
Background technique
The natural gas well in process of production, pipeline frozen block and produced water in order to prevent, generally use into gas well or The production measure such as note methanol, foam discharging agent in gathering line, common filling technique are with plunger pump and filling pipeline.With filling The appearance of the problems such as pipeline aging, perforation, causes cannot proceed normally.Especially some outlying wells, re-lay pipeline cost Height, difficulty of construction is big, to the production band strong influence of gas well, causes this portion of natural gas well because of water logging gas-bearing formation, production Pressure reduction cannot be generated just.Then there is wellhead chemicals-feeder, gas well is helped in well head using different equipment Agent filling.
Current well head medicine-adding mode has: stationary equipment filling, mobile device fill two kinds.
Mobile device filling is filled by mobile medicine adding vehicle, heavy workload, cannot accomplish 24 hours it is uninterrupted The disadvantages of filling, operating cost is high.
Stationary equipment is filled with: well head compensator;The electronic dosing pump filling of well head.Although the filling of well head compensator solves The power free problem of import, but exist simultaneously the bad control of dosage, medicament storage tank belongs to pressure vessel, by pressure influence, Volume is limited, and management is inconvenient.
The electronic dosing pump filling of well head is to provide power supply in well head installation generator (diesel oil, wind-force, solar energy), and driving adds Teat pipette is filled, and diesel-driven generator cost of electricity-generating is high, and power-equipment breaks down in the case where unattended to be not easy to be sent out Existing, economic benefit is very low, and operating cost is high.Wind-force, solar power generation, by such environmental effects, power limited is not able to satisfy existing The power demand of field filling,
In the production of the natural gas well, can all there be certain pressure difference between oil pipe and casing, for oil pipe producing well, casing pressure Power is greater than tubing pressure, i.e. PSet> POil;Casing producing well is then on the contrary, i.e. PSet< POil.There are pressure differences there is kinetic energy, present invention benefit The auxiliary agent filling in remote well site is realized with this kinetic energy.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of utilization natural gas well oil jacket pressure Difference realizes auxiliary agent filling apparatus and method, and high pressure gas drive pump is accessed between tubing and casing, is moved back and forth under the driving of natural gas, To drive liquid booster pump to work, auxiliary agent is pressurized injection pipe network.
The present invention mentions a kind of using natural gas well oil jacket pressure difference realization auxiliary agent filling apparatus, and technical solution is: packet Gas-powered head (a), connecting shaft (b), auxiliary agent booster pump (c) are included, the gas-powered head (a) is helped by connecting shaft (b) connection Agent booster pump (c), oil jacket natural gas pressure difference energy is converted to driving force by gas-powered head (a), and is transmitted by connecting shaft (b) Power drive auxiliary agent booster pump (c) to auxiliary agent be pressurized;
The gas-powered head (a) includes guide rod fixed block (1), cylinder upper press cover (2), sliding block (3), guide rod (4), sliding block Mandril (5), upper cylinder barrel (6), air rammer (7), gland (8), lower cylinder barrel (9), cylinder lower cover (10), cylinder body fastening in cylinder Screw rod (11), lower seal pad (12), upper gasket (13), plate thick stick (14),
The top of upper cylinder barrel (6) is equipped with cylinder upper press cover (2), installs guide rod fixed block (1) in the middle part of cylinder upper press cover (2), The bottom of upper cylinder barrel (6) is connect by gland (8) in the cylinder with air inlet with lower cylinder barrel (9), and the bottom of lower cylinder barrel (9) is set There is the cylinder lower cover (10) with gas outlet, and is fixedly connected by cylinder body fastening screw (11), the air rammer (7) Upper cylinder barrel (6) and lower cylinder barrel (9) are separated into three chambers: epicoele (a1), lumen (a2), cavity of resorption (a3), air inlet and lumen (a2) it is connected to, gas outlet is connected to cavity of resorption (a3);Sliding block (3) is connected by sliding block mandril (5) with air rammer (7), sliding block (3) Movement be oriented to by guide rod (4), pass through guide rod fixed block (1) and guide rod (4) and carry out upper and lower commutation and limit;Lower sealing Pad (12) and upper gasket (13) are fixed on plate thick stick (14), and plate thick stick (14) is mounted on guide rod by centre bore with sliding block (3) (4) on, the up and down motion of sliding block (3), band movable plate thick stick (14) moves up and down, and linkage lower seal pad (12) and upper gasket (13) are more For open and close, commutate.
Preferably, the inner cavity top of above-mentioned air rammer (7) is connected and fixed with connecting shaft (b), and connecting shaft (b) is upper Side is equipped with cavity, for installing guide rod (4);The lower end of the guide rod (4) is the limited step of protrusion, with connecting shaft (b) On cavity cooperation, the upper end of guide rod (4) is fixedly connected with guide rod fixed block (1).
Preferably, the upper surface of the upper cover body of above-mentioned air rammer (7) passes through shaft connection sliding block mandril (5), sliding block top The other end of bar (5) is connect by pin shaft with sliding block (3), and the sliding block (3) is installed on the guide bar, can be along on guide rod Lower movement;The inner wall of the outer wall and upper cylinder barrel (6) of the upper cover body of the air rammer (7) is slidably matched, and upper cover body is equipped with Exit orifice and inner hole, wherein epicoele (a1) is connected to by exit orifice with lumen (a2), and inner hole is interior by epicoele (a1) and air rammer (7) Chamber is connected to cavity of resorption (a3).
Preferably, above-mentioned sliding block (3) is equipped with groove, and groove internal fixation plate thick stick (14), installs two groups of companies on plate thick stick (14) The lower part of extension bar, first connecting rod is fixed lower seal pad (12), and the lower part of the second connecting rod is fixed upper gasket (13);And first Connecting rod passes through the upper cover body of air rammer (7), and the downside of upper cover body is arranged in, and is located at air rammer (7) and upper cylinder half Lumen (a2) between cylinder (6);Second connecting rod passes through the upper cover body of air rammer (7), and the upper of upper cover body is arranged in Side, and it is located at the cavity position of air rammer (7).
Preferably, the upper cover body Yu connecting shaft (b) of above-mentioned air rammer (7) are overall structure, and section is T-shaped knot The top of structure, connecting shaft (b) is equipped with macropore, for the bottom surface with sliding block (3).
Preferably, the bottom of above-mentioned guide rod fixed block (1) is equipped with groove, for cooperating with the top of sliding block (3);Under and Side center fixed guide pole (4).
A kind of application method that auxiliary agent filling apparatus is realized using natural gas well oil jacket pressure difference that the present invention mentions, including with Lower process:
A, air rammer (7) uplink: sliding block (3) is in upper under the action of sliding block mandril (5), and lower seal pad (12) is closed, Upper gasket (13) is opened, and epicoele is connected to cavity of resorption at this time, and the natural gas in casing is entered lumen (a2) by air inlet, is pushed Air rammer (7) moves upwards;Natural gas in epicoele (a1) and cavity of resorption (a3) is arranged by the gas outlet of cylinder lower cover (10) Out into oil pipe;
B, upper limit commutates: when air rammer (7) is up to upper limit site, the bottom of sliding block (3) and guide rod fixed block (1) Portion's contact is fixed, and air rammer (7) continues uplink, and sliding block (3) is promoted to go downwards to commutation critical point relative to air rammer (7), It crosses critical point to commutate immediately, commutation is completed;
C, air rammer (7) downlink: sliding block (3) is under the action of sliding block mandril (5), and in bottom, lower seal pad (12) is opened, Upper gasket (13) is closed, and epicoele (a1) is connected to lumen (a2) at this time, and the natural gas in casing enters lumen by air inlet (a2), epicoele (a1) pushes air rammer (7) to move downward;Natural gas in cavity of resorption (a3) is discharged by gas outlet, is drained into In oil pipe;
D, bottom limit commutation: when air rammer (7) goes downwards to lower limit site, sliding block (3) and guide rod (4) bottom protrusion Limited step contact is fixed, and air rammer (7) continues traveling downwardly, promotes sliding block (3) to be up to commutation relative to air rammer (7) and face Boundary's point crosses critical point and commutates immediately, and commutation is completed;Piston starts uplink, moves so on circulate, realizes gas-powered head (a) auxiliary agent booster pump (c) movement is driven by connecting shaft (b), normal pressure auxiliary agent is pressurized to auxiliary agent pressure needed for well head, thus real Existing auxiliary agent filling.
The beneficial effects of the present invention are: the present invention is discharged into production pipeline, zero leakage, zero-emission after using driving air work Put, although driving gas be inflammable and explosive medium, do not influence the operation of equipment, as long as gas well liquid loading it is inexhaustible with it not It exhausts;
Moreover, it is achieved that the capital equipment of the method is High Pressure Difference gas drive pump, and it has the advantage of: 1) it is ingenious in design, it is rationally sharp With oil jacket pressure difference, it is not necessarily to power supply, well head is facilitated to fill;2) driving head is high pressure resistant, and driving gas is high pressure, handles without pressure regulation, Highest stress levels can accomplish 35MPa, and conventional pneumatic pump pressure resistance is no more than 1.6Mpa;3) High Pressure Difference drives, gas-powered head Front and back pressure difference maximum 3.5MPa, conventional pneumatic pump pressure difference are no more than 1.0MPa;4) gas access is discharged in equipment zero-emission, this equipment Pipe network is produced, realizes zero-emission, the discharge gas of conventional pneumatic pump is directly discharged to atmosphere, pollutes environment;5) adaptable, it is right It drives the cleannes of gas to require low, will not influence the operation of pump in gas containing a small amount of liquid;6) performance is stablized, purely mechanic to change To stability is high, is influenced by medium, environment small.Conventional pneumatic pump is commutated by reversal valve, and the requirement to medium is high, to not Clean driving gas be easy to cause commutation to fail.7) discharge capacity is big, since driving gas differential pressure is big, is capable of providing bigger drive Power, bigger than common air driven pump in the case where being pressurized identical situation, the maximum pump discharge of pump pressurization 5MPa can reach 2000L/d; 8) mating convenience can facilitate realization automation filling with matched block combiner.
Detailed description of the invention
Attached drawing 1 is monnolithic case figure of the invention;
Attached drawing 2 is the structural schematic diagram of gas-powered head;
Attached drawing 3 is the structural schematic diagram that the air rammer of gas-powered head goes downwards to commutation critical point;
Attached drawing 4 is the structural schematic diagram that the downlink commutation of gas-powered head is completed;
Attached drawing 5 is that the air rammer of gas-powered head goes downwards to the structural schematic diagram of bottom limit;
Attached drawing 6 is the structural schematic diagram that the sliding block of gas-powered head is up to commutation critical point;
Attached drawing 7 is the structural schematic diagram that the uplink commutation of gas-powered head is completed;
Attached drawing 8 is the principle of the present invention block diagram;
In upper figure: gas-powered head (a), connecting shaft (b), auxiliary agent booster pump (c), epicoele (a1), lumen (a2), cavity of resorption (a3), Guide rod fixed block (1), sliding block (3), guide rod (4), sliding block mandril (5), upper cylinder barrel (6), is pneumatically lived at cylinder upper press cover (2) Fill in (7), gland (8) in cylinder, lower cylinder barrel (9), cylinder lower cover (10), cylinder body fastening screw (11), lower seal pad (12), on Gasket (13), plate thick stick (14).
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The present invention mentions a kind of using natural gas well oil jacket pressure difference realization auxiliary agent filling apparatus, and technical solution is: packet Gas-powered head (a), connecting shaft (b), auxiliary agent booster pump (c) are included, the gas-powered head (a) is helped by connecting shaft (b) connection Agent booster pump (c), oil jacket natural gas pressure difference energy is converted to driving force by gas-powered head (a), and is transmitted by connecting shaft (b) Power drive auxiliary agent booster pump (c) to auxiliary agent be pressurized;
The gas-powered head (a) includes guide rod fixed block (1), cylinder upper press cover (2), sliding block (3), guide rod (4), sliding block Mandril (5), upper cylinder barrel (6), air rammer (7), gland (8), lower cylinder barrel (9), cylinder lower cover (10), cylinder body fastening in cylinder Screw rod (11), lower seal pad (12), upper gasket (13), plate thick stick (14),
The top of upper cylinder barrel (6) is equipped with cylinder upper press cover (2), installs guide rod fixed block (1) in the middle part of cylinder upper press cover (2), The bottom of upper cylinder barrel (6) is connect by gland (8) in the cylinder with air inlet with lower cylinder barrel (9), and the bottom of lower cylinder barrel (9) is set There is the cylinder lower cover (10) with gas outlet, and is fixedly connected by cylinder body fastening screw (11), the air rammer (7) Upper cylinder barrel (6) and lower cylinder barrel (9) are separated into three chambers: epicoele (a1), lumen (a2), cavity of resorption (a3), air inlet and lumen (a2) it is connected to, gas outlet is connected to cavity of resorption (a3);Sliding block (3) is connected by sliding block mandril (5) with air rammer (7), sliding block (3) Movement be oriented to by guide rod (4), pass through guide rod fixed block (1) and guide rod (4) and carry out upper and lower commutation and limit;Lower sealing Pad (12) and upper gasket (13) are fixed on plate thick stick (14), and plate thick stick (14) is mounted on guide rod by centre bore with sliding block (3) (4) on, the up and down motion of sliding block (3), band movable plate thick stick (14) moves up and down, and linkage lower seal pad (12) and upper gasket (13) are more For open and close, commutate.
Preferably, the inner cavity top of above-mentioned air rammer (7) is connected and fixed with connecting shaft (b), and connecting shaft (b) is upper Side is equipped with cavity, for installing guide rod (4);The lower end of the guide rod (4) is the limited step of protrusion, with connecting shaft (b) On cavity cooperation, the upper end of guide rod (4) is fixedly connected with guide rod fixed block (1).
Preferably, the upper surface of the upper cover body of above-mentioned air rammer (7) passes through shaft connection sliding block mandril (5), sliding block top The other end of bar (5) is connect by pin shaft with sliding block (3), and the sliding block (3) is installed on the guide bar, can be along on guide rod Lower movement;The inner wall of the outer wall and upper cylinder barrel (6) of the upper cover body of the air rammer (7) is slidably matched, and upper cover body is equipped with Exit orifice and inner hole, wherein epicoele (a1) is connected to by exit orifice with lumen (a2), and inner hole is interior by epicoele (a1) and air rammer (7) Chamber is connected to cavity of resorption (a3).
Preferably, above-mentioned sliding block (3) is equipped with groove, and groove internal fixation plate thick stick (14), installs two groups of companies on plate thick stick (14) The lower part of extension bar, first connecting rod is fixed lower seal pad (12), and the lower part of the second connecting rod is fixed upper gasket (13);And first Connecting rod passes through the upper cover body of air rammer (7), and the downside of upper cover body is arranged in, and is located at air rammer (7) and upper cylinder half Lumen (a2) between cylinder (6);Second connecting rod passes through the upper cover body of air rammer (7), and the upper of upper cover body is arranged in Side, and it is located at the cavity position of air rammer (7).
Preferably, the upper cover body Yu connecting shaft (b) of above-mentioned air rammer (7) are overall structure, and section is T-shaped knot The top of structure, connecting shaft (b) is equipped with macropore, for the bottom surface with sliding block (3).
Preferably, the bottom of above-mentioned guide rod fixed block (1) is equipped with groove, for cooperating with the top of sliding block (3);Under and Side center fixed guide pole (4).
A kind of application method that auxiliary agent filling apparatus is realized using natural gas well oil jacket pressure difference that the present invention mentions, including with Lower process:
A, air rammer (7) uplink: sliding block (3) is in upper under the action of sliding block mandril (5), and lower seal pad (12) is closed, Upper gasket (13) is opened, and epicoele is connected to cavity of resorption at this time, and the natural gas in casing is entered lumen (a2) by air inlet, is pushed Air rammer (7) moves upwards;Natural gas in epicoele (a1) and cavity of resorption (a3) is arranged by the gas outlet of cylinder lower cover (10) Out into oil pipe;
B, upper limit commutates: when air rammer (7) is up to upper limit site, the bottom of sliding block (3) and guide rod fixed block (1) Portion's contact is fixed, and air rammer (7) continues uplink, and sliding block (3) is promoted to go downwards to commutation critical point relative to air rammer (7), It crosses critical point to commutate immediately, commutation is completed;
C, air rammer (7) downlink: sliding block (3) is under the action of sliding block mandril (5), and in bottom, lower seal pad (12) is opened, Upper gasket (13) is closed, and epicoele (a1) is connected to lumen (a2) at this time, and the natural gas in casing enters lumen by air inlet (a2), epicoele (a1) pushes air rammer (7) to move downward;Natural gas in cavity of resorption (a3) is discharged by gas outlet, is drained into In oil pipe;
D, bottom limit commutation: when air rammer (7) goes downwards to lower limit site, sliding block (3) and guide rod (4) bottom protrusion Limited step contact is fixed, and air rammer (7) continues traveling downwardly, promotes sliding block (3) to be up to commutation relative to air rammer (7) and face Boundary's point crosses critical point and commutates immediately, and commutation is completed;Piston starts uplink, moves so on circulate, realizes gas-powered head (a) auxiliary agent booster pump (c) movement is driven by connecting shaft (b), normal pressure auxiliary agent is pressurized to auxiliary agent pressure needed for well head, thus real Existing auxiliary agent filling.
Advantages of the present invention is as follows:
1) ingenious in design, oil jacket pressure difference is rationally utilized, power supply is not necessarily to, well head is facilitated to fill;
2) driving head is high pressure resistant, and driving gas is high pressure, is handled without pressure regulation, and highest stress levels can accomplish 35MPa, commonly Air driven pump pressure resistance is no more than 1.6Mpa
3) High Pressure Difference drives, pressure difference maximum 3.5MPa before and after gas-powered head, and conventional pneumatic pump pressure difference is no more than 1.0MPa
4) equipment zero-emission, this equipment are discharged gas access production pipe network, realize zero-emission, and the discharge gas of conventional pneumatic pump is straight Run in and be put into atmosphere, pollutes environment.
5) adaptable, it is low to the cleannes requirement of driving gas, it will not influence the fortune of pump in gas containing a small amount of liquid Row.
6) performance is stablized, purely mechanic commutation, and stability is high, is influenced by medium, environment small.Conventional pneumatic pump passes through commutation Valve commutation, the requirement to medium is high, to uncleanly driving gas, commutation is be easy to cause to fail.
7) discharge capacity is big, since driving gas differential pressure is big, is capable of providing bigger driving force, in the case where being pressurized identical situation, Bigger than common air driven pump, the maximum pump discharge of pump pressurization 5MPa can reach 2000L/d
8) mating convenience can facilitate realization automation filling with matched block combiner
The above is only part preferred embodiment of the invention, and anyone skilled in the art is possibly also with upper Equivalent technical solution is modified or be revised as to the technical solution for stating elaboration.Therefore, technical solution according to the present invention Any simple modification carried out or substitute equivalents, belong to the greatest extent the scope of protection of present invention.

Claims (7)

1. a kind of realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: including gas-powered head (a), connecting Spindle (b), auxiliary agent booster pump (c), the gas-powered head (a) are driven by connecting shaft (b) connection auxiliary agent booster pump (c), gas Oil jacket natural gas pressure difference energy is converted to driving force, and the power drive auxiliary agent pressurization transmitted by connecting shaft (b) by dynamic head (a) (c) is pumped to be pressurized auxiliary agent;
The gas-powered head (a) includes guide rod fixed block (1), cylinder upper press cover (2), sliding block (3), guide rod (4), sliding block Mandril (5), upper cylinder barrel (6), air rammer (7), gland (8), lower cylinder barrel (9), cylinder lower cover (10), cylinder body fastening in cylinder Screw rod (11), lower seal pad (12), upper gasket (13), plate thick stick (14),
The top of upper cylinder barrel (6) is equipped with cylinder upper press cover (2), installs guide rod fixed block (1) in the middle part of cylinder upper press cover (2), The bottom of upper cylinder barrel (6) is connect by gland (8) in the cylinder with air inlet with lower cylinder barrel (9), and the bottom of lower cylinder barrel (9) is set There is the cylinder lower cover (10) with gas outlet, and is fixedly connected by cylinder body fastening screw (11), the air rammer (7) Upper cylinder barrel (6) and lower cylinder barrel (9) are separated into three chambers: epicoele (a1), lumen (a2), cavity of resorption (a3), air inlet and lumen (a2) it is connected to, gas outlet is connected to cavity of resorption (a3);Sliding block (3) is connected by sliding block mandril (5) with air rammer (7), sliding block (3) Movement be oriented to by guide rod (4), pass through guide rod fixed block (1) and guide rod (4) and carry out upper and lower commutation and limit;Lower sealing Pad (12) and upper gasket (13) are fixed on plate thick stick (14), and plate thick stick (14) is mounted on guide rod by centre bore with sliding block (3) (4) on, the up and down motion of sliding block (3), band movable plate thick stick (14) moves up and down, and linkage lower seal pad (12) and upper gasket (13) are more For open and close, commutate.
2. according to claim 1 realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: described The inner cavity top of air rammer (7) is connected and fixed with connecting shaft (b), and the upside of connecting shaft (b) is equipped with cavity, is led for installing To bar (4);The lower end of the guide rod (4) is the limited step of protrusion, is cooperated with the cavity in connecting shaft (b), guide rod (4) Upper end be fixedly connected with guide rod fixed block (1).
3. according to claim 1 realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: the gas The upper surface of the upper cover body of piston (7) passes through pin shaft by shaft connection sliding block mandril (5), the other end of sliding block mandril (5) It is connect with sliding block (3), the sliding block (3) is installed on the guide bar, can be moved up and down along guide rod;The air rammer (7) outer wall of upper cover body and the inner wall of upper cylinder barrel (6) are slidably matched, and upper cover body is equipped with exit orifice and inner hole, wherein exit orifice Epicoele (a1) is connected to lumen (a2), epicoele (a1) is connected to by inner hole with the inner cavity of air rammer (7) and cavity of resorption (a3).
4. according to claim 1 realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: the cunning Block (3) is equipped with groove, and groove internal fixation plate thick stick (14), installs two groups of connecting rods, the lower part of first connecting rod on plate thick stick (14) Fixed lower seal pad (12), the lower part of the second connecting rod are fixed upper gasket (13);And first connecting rod passes through air rammer (7) Upper cover body, and the downside of upper cover body is set, and the lumen (a2) between air rammer (7) and upper cylinder barrel (6);Institute It states the second connecting rod and passes through the upper cover body of air rammer (7), and the upside of upper cover body is set, and be located at air rammer (7) Cavity position.
5. according to claim 1 realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: the gas The upper cover body and connecting shaft (b) of piston (7) are overall structure, and section is T-shaped structure, and the top of connecting shaft (b) is equipped with Macropore, for the bottom surface with sliding block (3).
6. according to claim 1 realize auxiliary agent filling apparatus using natural gas well oil jacket pressure difference, it is characterized in that: described lead It is equipped with groove to the bottom of bar fixed block (1), for cooperating with the top of sliding block (3);And downside center fixed guide pole (4).
7. a kind of realize making for auxiliary agent filling apparatus using natural gas well oil jacket pressure difference as of any of claims 1-6 With method, it is characterized in that including following procedure:
A, air rammer (7) uplink: sliding block (3) is in upper under the action of sliding block mandril (5), and lower seal pad (12) is closed, Upper gasket (13) is opened, and epicoele is connected to cavity of resorption at this time, and the natural gas in casing is entered lumen (a2) by air inlet, is pushed Air rammer (7) moves upwards;Natural gas in epicoele (a1) and cavity of resorption (a3) is arranged by the gas outlet of cylinder lower cover (10) Out into oil pipe;
B, upper limit commutates: when air rammer (7) is up to upper limit site, the bottom of sliding block (3) and guide rod fixed block (1) Portion's contact is fixed, and air rammer (7) continues uplink, and sliding block (3) is promoted to go downwards to commutation critical point relative to air rammer (7), It crosses critical point to commutate immediately, commutation is completed;
C, air rammer (7) downlink: sliding block (3) is under the action of sliding block mandril (5), and in bottom, lower seal pad (12) is opened, Upper gasket (13) is closed, and epicoele (a1) is connected to lumen (a2) at this time, and the natural gas in casing enters lumen by air inlet (a2), epicoele (a1) pushes air rammer (7) to move downward;Natural gas in cavity of resorption (a3) is discharged by gas outlet, is drained into In oil pipe;
D, bottom limit commutation: when air rammer (7) goes downwards to lower limit site, sliding block (3) and guide rod (4) bottom protrusion Limited step contact is fixed, and air rammer (7) continues traveling downwardly, promotes sliding block (3) to be up to commutation relative to air rammer (7) and face Boundary's point crosses critical point and commutates immediately, and commutation is completed;Piston starts uplink, moves so on circulate, realizes gas-powered head (a) auxiliary agent booster pump (c) movement is driven by connecting shaft (b), normal pressure auxiliary agent is pressurized to auxiliary agent pressure needed for well head, thus real Existing auxiliary agent filling.
CN201811339751.0A 2018-11-12 2018-11-12 Device and method for realizing auxiliary agent filling by utilizing pressure difference of oil jacket of natural gas well Active CN109707586B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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CN2398442Y (en) * 1999-07-07 2000-09-27 龚伟安 Negative-pressure pulse deep well oil production pump device
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Publication number Priority date Publication date Assignee Title
CN110374563A (en) * 2019-06-25 2019-10-25 中国石油天然气股份有限公司 A kind of clump formula gas well automatic medicine adding apparatus and method based on differential pressure driving

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