CN209603947U - A kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road - Google Patents
A kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road Download PDFInfo
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- CN209603947U CN209603947U CN201920067107.6U CN201920067107U CN209603947U CN 209603947 U CN209603947 U CN 209603947U CN 201920067107 U CN201920067107 U CN 201920067107U CN 209603947 U CN209603947 U CN 209603947U
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- casing gas
- casing
- seat
- pressure
- ball
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- 239000003129 oil well Substances 0.000 title claims abstract description 21
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000013011 mating Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 69
- 239000003921 oil Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000010779 crude oil Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to oilfield technology fields, and in particular to a kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road.The utility model structure is simple, low in cost, can effectively break through the pressure barrier that low-tension bushing gas enters high pressure collector and delivery pipe road, realizes the purpose that casing gas is effectively collected using existence conditions；The alternation switch effect of mating ball-and-seat is utilized, having cracked low-tension bushing gas cannot be introduced into the problem of high pressure gathering line.The technical solution of the utility model includes pipe sleeve joint, it is connect by casing gas gathering line with casing gas circuit ball-and-seat on pipe sleeve joint, steering threeway box cupling on the lower end and well head pipeline of casing gas circuit ball-and-seat turns in threeway box cupling and is provided with well head ready-package ball-and-seat；The casing gas collecting pipe line end connecting with casing gas circuit ball-and-seat is provided with gas circuit gate；The pipe sleeve joint is three-way connection；One end of the pipe sleeve joint is also connected with casing three-way gate.
Description
Technical field
The utility model relates to oilfield technology fields, and in particular to a kind of that oil well low pressure casing gas is recycled to high-pressure well mouth
Device in collector and delivery pipe road.
Background technique
In oil well production process, not only output crude oil in oil reservoir, also has and is partly dissolved in stratum in oil well
Fuel gas in liquid can be escaped with pressure reduction, and pit shaft, normally referred to as casing gas is discharged from oil jacket annulus.This part
Gas property is identical as natural gas, can directly burn.But due to the limitation of production practice and device characteristics, casing gas can not and it is former
The liquid Synchronization mining sum aggregate such as oil is defeated, and in addition this portion gas comparatively negligible amounts, are not achieved the grade that commercial mining utilizes
Not, therefore casing gas is often applied a torch to light on the spot and consumes or be directly released into air.As safety and environmental protection develops
It is required that and oil-gas resource rapid exhaustion, the natural gas (hereinafter referred to as casing gas) that large number of oil well casing overflows
It is taken seriously, but still to have many problems by Collection utilization casing gas in existing production practice frame.Well casing gas by
In pressure low quantity dispersion, oil recovery efficiency can be seriously affected by being forced into oil well pump, if be individually laid with new gas gathering network at
Ben Taigao, therefore want centralized collection extremely difficult using casing gas under As-Is.
Once there is the practical activity that casing gas is collected using valve discharging gas under certain pressure control, when casing atmospheric pressure is higher than specified pressure
The channel towards gathering line can be opened when power, so that the higher casing gas of atmospheric pressure is directly entered gathering and transferring process, but defeated due to collecting
The back pressure of process is generally more much higher than the air pressure of casing gas, and 90% or more well casing gas cannot be introduced into the existing defeated stream of collection
There is the problems such as oil leak in journey or even part valve discharging gas under certain pressure, valve discharging gas under certain pressure facility at present at the scene on be mostly in failure
Dead status.If low pressure cannot be overcome to move towards the difficulty of high pressure, the Collection utilization of casing gas will be unable to realize.
Utility model content
In view of this, oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road the utility model proposes a kind of
Device.
In order to solve the problems existing in the prior art, the technical solution of the utility model is: a kind of by oil well low pressure casing gas
The device being recycled in high-pressure well mouth collector and delivery pipe road, it is characterised in that: including pipe sleeve joint, received on pipe sleeve joint by casing gas
Manifold line is connect with casing gas circuit ball-and-seat, the steering threeway box cupling on the lower end and well head pipeline of casing gas circuit ball-and-seat, is turned
Well head ready-package ball-and-seat is provided with into threeway box cupling.
The casing gas collecting pipe line end connecting with casing gas circuit ball-and-seat is provided with gas circuit gate.
The pipe sleeve joint is three-way connection.
One end of the pipe sleeve joint is also connected with casing three-way gate.
Compared with prior art, as follows the advantages of the utility model:
The utility model structure is simple, low in cost, can effectively break through the pressure that low-tension bushing gas enters high pressure collector and delivery pipe road
Power barrier realizes the purpose that casing gas is effectively collected using existence conditions.
The alternation switch effect of mating ball-and-seat is utilized in the utility model, and having cracked low-tension bushing gas cannot be introduced into high pressure
The problem of gathering line.
Detailed description of the invention
Fig. 1 is that a kind of total cylinder air inlet of electric locomotive of the utility model embodiment controls assembly diagram；
Wherein, 1- polished rod, 2- packing box, 3- well mouth oil pipe threeway, 4- wellhead flange, 5- flange bolt, 6- lower flange, 7-
Casing threeway is shorted, 8- casing threeway outlet, 9- casing joint, 10- casing three-way gate, 11- gathering line A, 12- casing gas
Gathering line, 13- gathering line B, 14- slide valve, 15- well head ready-package ball-and-seat, 16- turn to threeway box cupling, 17- sampling valve
Door, 18- casing gas switch door, 19- casing gas circuit ball-and-seat, 20- produce valve, and 21- surveys pressure gate, 22- pressure gauge, and 23- turns
To four-way box cupling.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit utility model.
Oil well low pressure casing gas is recycled to the device in high-pressure well mouth collector and delivery pipe road (referring to figure the present embodiment provides a kind of
1) it, including pipe sleeve joint 9, is connect by casing gas gathering line 12 with casing gas circuit ball-and-seat 19 on pipe sleeve joint 9, casing gas
Steering threeway box cupling 16 on the lower end and well head pipeline of road ball-and-seat 19 turns in threeway box cupling and 16 is provided with well head ready-package
Ball-and-seat 15.
12 end of casing gas gathering line connecting with casing gas circuit ball-and-seat 19 is provided with gas circuit gate 18.
The pipe sleeve joint 9 is three-way connection, and one end of pipe sleeve joint 9 is also connected with casing three-way gate 10.
Each component is introduced below:
1, polished rod 1: being transferred to a sucker rod of oil well pump for pumping unit promotion power, and surface is smooth to be convenient for and packing box
Dynamic sealing when moving up and down is realized in 2 cooperations；
2, packing box 2: polished rod is driven to keep the close of well head pressure system with packing box when moving reciprocatingly in pumping unit
Envelope, lower part is connected with thread well mouth oil pipe threeway；
3, well mouth oil pipe threeway 3: being made of multistage same specification tubing nipple, includes oil pumping lever system and oil pipe outlet, is
Crude oil output enters gathering line A11 or gathering line B13 and provides access, lower end and well up flange screwed connection；
4, wellhead flange 4: being composed of upper flange and lower flange, for hanging well oil pipe, production pipe in carrying well
String weight, and the annular space between oil pipe and casing is sealed, upper lower flange is fixed with bolt, and centre is realized close with annular steel ring
Envelope；
5, flange bolt 5: for the bolt of mounting flange group；
6, it lower flange 6: is mounted on casing threeway and is shorted on 7, supported and suspended well oil pipe simultaneously realizes sealing, with wellhead flange
4 are paired into wellhead flange, are shorted 7 screwed connections with casing threeway；
7, casing threeway is shorted 7: for connecting underground pipe casing and wellhead flange, and providing the outlet of annular space；
8, casing threeway outlet 8；
9, it casing joint 9: is connected with thread between casing threeway outlet 8 and casing three-way gate 10, by low-tension bushing
Gas lead-in bushing gas gathering line 12；
10, casing three-way gate 10: pass through or closed gate for controlling casing annulus fluid；
11, gathering line A11: being commonly used to the gathering line of measurement individual well liquid-producing capacity, is also used as main production pipe sometimes
Line (when pipeline rotation maintenance), part oil field is not provided with this pipeline, and end is connected to treatment station；
12, casing gas casing gas gathering line 12: is introduced to the access of production gathering line；
13, gathering line B13: the main gathering line for being generally used for crude oil output in well connects, and is connected to the defeated treating stations of collection
Point, pipeline A and B are two independent routes, and end is all to be linked into the defeated treatment station of collection, and effect can according to need mutually
It changes；
14, slide valve 14: controlled gate is respectively installed on A and the B two defeated routes of collection, for controlling gathering line
Opening and closing；
15, well head ready-package ball-and-seat 15: being installed on and turn to threeway or turn in four-way box cupling, has well head pipeline single
To handling capacity, well head liquid can only be flowed from the gathering line of well head downwards, prevent the oil transportation of high pressure collection flow back to or
Pressure acts on the well head of ball-and-seat or more；
16, it turns to threeway box cupling 16: being specifically used to replace the box cupling of pipeline trend；
17, crude oil sample sample cock 17: is taken out from well head pipeline for controlling.It is directly welded at and turns to threeway box cupling
On；
18,18: one, the casing gas switch door backup gates for the connection of partition casing gas when needed；
19, casing gas circuit ball-and-seat 19: connect in the form of screw thread and turning to threeway box cupling 16(or turning to four-way box cupling 23) on
Side, is the unidirectional automatic controls that casing gas enters well head pipeline, only casing gas is allowed to enter well head, does not allow resulting fluid
Sleeve pipe gas route.The well head ready-package ball-and-seat for also cooperating when turning to above threeway box cupling and compressing lower part is tightened in screw thread
15, pretightning force needed for compressing sealing ring is provided for it；
20, valve 20: the valve installed in well mouth oil pipe threeway is produced, is used in cutting well if necessary and well head pipe
The connection of line；
21, it surveys pressure gate 21: being welded on the paddle for being used to install pressure gauge on well head pipeline；
22, pressure gauge 22: for monitoring well head pressure；
23, four-way box cupling 23 is turned to: identical with the effect of threeway box cupling is turned to.The connector provided for conversion pipeline direction.
Top is sealed with silk plug, other three sentence screw thread form connection well head pipeline.
The connection procedure of the utility model:
The utility model casing joint 9 is a three way type connector, and straight-through both ends in the form of screw thread pin thread, are divided respectively
Other connecting sleeve threeway exports on the female thread of 8 pipe nipples and the female thread of casing three-way gate 10.The connection of its vertical outlet screw thread form
12 one end of casing gas gathering line.Well head ready-package ball-and-seat 15 is mounted to one that well head turns to 16 inner cavity of threeway box cupling
Ball-and-seat core, lower part is by the half the circumference of the sleeve where it joins the shoulder on its ontology and turns to the half the circumference of the sleeve where it joins the shoulder cooperation in threeway box cupling, and it is close that O-ring seal is placed in centre
Envelope completely cuts off the flow channels of 15 ontology periphery of well head ready-package ball-and-seat, all fluids flowed through is forced all to pass through from its inner cavity,
Its inner cavity has the valve to automatically reset and valve seat to cooperatively form single flow path.The top of threeway box cupling 16 is turned to by set
Pipe gas circuit ball-and-seat 19 is connected in the form of screw thread turns to 16 top of threeway box cupling, tightens and suppresses well head ready-package ball-and-seat
15, the sealing ring realization for being allowed to outer wall is closed.There is side opening on the side wall of casing gas circuit ball-and-seat 19, is connected to cover in the form of screw thread
Pipe gas circuit valve 18, is then connected with the other end of casing gas gathering line 12.
The utility model is installed on the action principle in existing pipeline:
After well head installs utility model device, pumping unit drives polished rod 1 to pump in production, works as polished rod
1 when moving upwards, and the liquid such as the crude oil of extraction are given rise to well head by the oil well pump in shaft bottom, and fluid pressure is increased in well head, works as well
(casing gas circuit ball-and-seat 19 is due to by well at this time when pressure in mouthful pipeline is higher than the pressure of 15 lower part of well head ready-package ball-and-seat
Mouth affected by high is in close state channel and shuts), the valve of well head ready-package ball-and-seat 15 will be beaten by well head highly pressurised liquid
It opens, so that the liquid of well head be allowed to enter the gathering line of lower section by its inner cavity, and is pushed on well head ready-package ball-and-seat
Flow channels are automatically cut off when dynamic balance.When polished rod 1 moves downward, since upward movement is changed into downward movement, oil
Pipe institute is loaded to be become being pushed out elongation by lifting shortening state from originally, at this time since well head ready-package ball-and-seat 15 closes
Channel, the high pressure in gathering line is isolated, the elongation of oil pipe and the unlatching not in time of oil well pump travelling valve, has resulted in taking out
The volume of oil pump to this section of seal chamber of well head extends with oil pipe and is increased, and oil well pump travelling valve does not have in-place oil liquid before opening
The supplement of body results in well head pressure and falls after rise to zero or even negative pressure occur.15 channel of well head ready-package ball-and-seat is in envelope at this time
Closed state, and casing gas circuit ball-and-seat 19 is pushed open casing gas circuit ball-and-seat by well head low-pressure area and casing gas affected by high
19 make casing gas enter well head pipeline, casing gas circuit ball-and-seat when well head pressure balances or is higher than casing atmospheric pressure
19 can closing passage.Enter the casing gas in well head pipeline, it will well head pressure, which increases, when moving upwards with polished rod 1 opens well
Mouth ready-package ball-and-seat 15 enters the treatment station that gathering line reaches line downstream together.Such well head ready-package ball-and-seat
15 and casing gas circuit ball-and-seat 19 with polished rod move up and down and repeatedly in turn open and close, cooperation oil well pump move back and forth, just
The low-tension bushing gas shield high pressure interference that cannot be introduced into high-pressure well mouth gathering line originally can be made to enter gathering line B13
In (or gathering line A11), such that oil well collects casing gas under the premise of not changing existing external channeling.
According to production gathering line service condition variation, well head ready-package ball-and-seat 15 and casing gas circuit ball-and-seat 19 are not only
It may be mounted on common posterolateral route, the extension wire gathering line of inside can be similarly mounted on according to production adjustment
On A11.Which produced with pipeline, just utility model device, which is installed at corresponding pipe joint, can be realized casing gas
Recycling.The above, the only preferred embodiment of the utility model are not intended to limit the protection model of the utility model
It encloses.
Claims (4)
1. a kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road, it is characterised in that: including pipe sleeve
Connector (9) is connect by casing gas gathering line (12) with casing gas circuit ball-and-seat (19) on pipe sleeve joint (9), casing gas circuit
Steering threeway box cupling (16) on the lower end and well head pipeline of ball-and-seat (19), turns in threeway box cupling (16) that be provided with well head fast
Dress formula ball-and-seat (15).
2. a kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road according to claim 1,
It is characterized by: casing gas gathering line (12) end connecting with casing gas circuit ball-and-seat (19) is provided with gas circuit gate (18).
3. a kind of dress that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road according to claim 1 or 2
It sets, it is characterised in that: the pipe sleeve joint (9) is three-way connection.
4. a kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road according to claim 3,
It is characterized by: one end of the pipe sleeve joint (9) is also connected with casing three-way gate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920067107.6U CN209603947U (en) | 2019-01-16 | 2019-01-16 | A kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920067107.6U CN209603947U (en) | 2019-01-16 | 2019-01-16 | A kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209603947U true CN209603947U (en) | 2019-11-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920067107.6U Expired - Fee Related CN209603947U (en) | 2019-01-16 | 2019-01-16 | A kind of device that oil well low pressure casing gas is recycled in high-pressure well mouth collector and delivery pipe road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209603947U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622718A (en) * | 2020-07-06 | 2020-09-04 | 山东嘉信德石油科技有限公司 | Unpowered maintenance-free casing pressure reduction device and mechanical production well comprising same |
| CN113047814A (en) * | 2019-12-26 | 2021-06-29 | 中国石油化工股份有限公司 | Polished rod compression type casing gas recovery and dosing device |
| CN116066028A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Recovery and sampling device for oil well casing gas and use method |
-
2019
- 2019-01-16 CN CN201920067107.6U patent/CN209603947U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047814A (en) * | 2019-12-26 | 2021-06-29 | 中国石油化工股份有限公司 | Polished rod compression type casing gas recovery and dosing device |
| CN111622718A (en) * | 2020-07-06 | 2020-09-04 | 山东嘉信德石油科技有限公司 | Unpowered maintenance-free casing pressure reduction device and mechanical production well comprising same |
| CN116066028A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Recovery and sampling device for oil well casing gas and use method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |