CN206111115U - Coiled tubing underbalance sand washing device - Google Patents
Coiled tubing underbalance sand washing device Download PDFInfo
- Publication number
- CN206111115U CN206111115U CN201620465883.8U CN201620465883U CN206111115U CN 206111115 U CN206111115 U CN 206111115U CN 201620465883 U CN201620465883 U CN 201620465883U CN 206111115 U CN206111115 U CN 206111115U
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- coiled tubing
- gas
- underbalance
- sand
- sand washing
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Abstract
The utility model relates to a coiled tubing underbalance sand washing device belongs to oil gas well sand washing technical field. Coiled tubing underbalance sand washing device includes coiled tubing, the last parallel connection of coiled tubing has the gas piping who provides sand washing gas and provides the bubble tube way of foam. The utility model discloses a characteristics that coiled tubing underbalance sand washing device had utilized in succession and oil pipe can carry out the underbalance operation to pour into foam and sand washing gas to mixing among the coiled tubing, improved the sand carrying capacity of the sand cleaning fluid body, can be under the condition of saving the kill -job operation, the purpose of realization low yield low -pressure gas well sand washing, can reduce the stratum simultaneously again pollutes, has both accorded with oil gas field economic benefits, accords with zero social who pollutes again.
Description
Technical field
This utility model is related to a kind of coiled tubing underbalance sand flushing device, belongs to Oil/gas Well sand washing technical field.
Background technology
During the oil gas well mining of low production and low pressure, Jing carries out sand washing frequently with foam sand wash technique to Oil/gas Well.Should
Technique is usually to install plug valve on oil pipe, and well head installs self-sealing blowout preventer, using arriving close oil well sand face depth under oil pipe
When, by the way that from oil pipe to infusion foam liquid in oil well, the foam liquid of carrying sand grains returns out well head and discharges and reality by sand washing
The purpose of existing shaft bottom desanding.Low production and low pressure gas well generally refers to the daily output less than 5000m3, bottom pressure ofgas well coefficient be less than 0.8
Gas well, when being operated using above-mentioned technique to low production and low pressure gas well, it is necessary to first carry out kill-job operation, kill-job operation can be caused
The secondary pollution of gas well reservoir, reduces individual well recovery ratio.
Utility model content
The purpose of this utility model is to provide a kind of coiled tubing underbalance sand flushing device that need not carry out kill-job operation,
Avoid secondary pollution of the kill-job operation to reservoir.
In order to realize object above, the technical scheme of coiled tubing underbalance sand flushing device of the present utility model is as follows：
A kind of coiled tubing underbalance sand flushing device, including coiled tubing, are connected in parallel on the coiled tubing and are provided with
The gas piping of sand washing gas and the foam line of offer foam.
Sand washing air pump car is connected with the gas piping, foam pump truck is connected with the foam line.
The coiled tubing underbalance sand flushing device includes returning out the gas-liquid separation device that well head is connected, the gas with sand washing
Liquid separating apparatus include that string is located at the water jacket furnace that sand washing is returned out on well head and the gas-liquid separator being connected with water jacket furnace.
Water jacket furnace choke valve is provided with the pipeline that the water jacket furnace and sand washing are returned out between well head.
The water jacket furnace is returned out well head and is connected by separate lines with sand washing, and the separate lines include returning out well with sand washing
The connected main line of mouth and the tie point being connected on main line and the second branch road, string sets the water jacket in tie point
Stove, the gas-liquid separation device includes that string is located at the liquid tank on the second branch road, the liquid tank and the gas-liquid separator phase
Even, the water jacket furnace choke valve is provided with the tie point, on second branch road mud settling tank choke valve is provided with.
The liquid tank includes the mud settling tank, filtering tank and the imbibition tank that are sequentially connected in series, the mud settling tank with described second
Road and gas-liquid separator are connected.
The sand washing returns out string between well head and separate lines and is provided with chip removing device and choke manifold.
The imbibition tank is connected with the foam line.
Coiled tubing underbalance sand flushing device of the present utility model make use of continuously can carry out underbalance operation with oil pipe
Feature, and mixing injection foam and sand washing gas in coiled tubing, can produce the lower sand washing liquid of density, also make foam solution
With higher surface tension, the prop-carrying capacity of sand washing liquid is improve.In the case of can operating kill-job is saved, realize low
The purpose of low-pressure gas well sand washing is produced, while and formation contaminant can be reduced, both meet oil gas field economic benefit, no pollution is met again
Social benefit.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment of coiled tubing underbalance sand flushing device of the present utility model.
Specific embodiment
The embodiment of coiled tubing underbalance sand flushing device of the present utility model：
As shown in figure 1, coiled tubing underbalance sand flushing device of the present utility model, including the continuous oil in for lower going-into-well
Pipe, is connected in parallel the nitrogen pipeline for being provided with nitrogen and the foam line for providing foam on coiled tubing, connect in nitrogen pipeline
There is liquid nitrogen pump vehicle 2, liquid nitrogen tank car 1 is connected with liquid nitrogen pump vehicle, foam pump truck 3 is connected with foam line.Coiled tubing owes flat
Weighing apparatus sand flushing device also includes returning out the coiled tubing sand washing returning fluid processing system that well head is connected, the coiled tubing punching with sand washing
Sand returning fluid processing system includes returning out the chip removing device 5 that well head is connected and the throttle pipe that chip removing device is connected in series with sand washing
Remittance 6 and the gas-liquid separation device being connected in series with choke manifold, the gas-liquid separation device includes what is be connected with choke manifold
Separate lines, water jacket furnace 7, gas-liquid separator 8 and liquid tank, separate lines include main line and the company being connected with choke manifold
The tie point being connected on main line and the second branch road, string sets and is connected with water jacket furnace 7 in tie point, the string company of setting on water jacket furnace 7
Gas-liquid separator 8 is connected to, gas-liquid separator includes liquid outlet and gas outlet.String sets and is connected with liquid tank on second branch road,
Liquid tank includes mud settling tank 9, filtering tank 10 and the imbibition tank 11 being sequentially connected in series, and the string of mud settling tank 9 is located on the second branch road, mud settling tank
Also it is connected with the liquid outlet of gas-liquid separator simultaneously.It is provided with the first leg for controlling fluid into the water of water jacket furnace
Blind roaster choke valve 12, is provided with for controlling fluid into the mud settling tank choke valve 13 of mud settling tank on the second branch road.
The foam pump truck is connected with imbibition tank, and the liquid after gas-liquid separator separates is through mud settling tank and filtering tank
After process, foam pump truck is entered by imbibition tank, recycled.
Above-described embodiment when in use, liquid nitrogen tank car and liquid nitrogen pump vehicle is contacted, in parallel with foam pump truck afterwards, makes liquid nitrogen
Pump truck and foam pump truck mix injection liquid nitrogen and foam in coiled tubing by liquid nitrogen pipeline and foam line respectively.Continuous oil
Pipe is connected with well head continuous oil pipe device 4, and by the G.I.H of christmas tree 14, christmas tree is filled by ground flow with debris removal
Put, choke manifold is contacted, liquid tank is in parallel with water jacket furnace, gas-liquid two-phase separator.From foam pump truck and liquid nitrogen pump vehicle during sand washing
Simultaneously infusion foam solution and liquid nitrogen, by coiled tubing shaft bottom is input to, and from coiled tubing and flow string annular space shaft bottom is carried
Product sand is returned out to sand washing and returns out well head, and returning fluid flows through chip removing device and removes Jing choke manifolds reduction ground face pressure after solid phase particles
Power, Jing gas-liquid separators carry out gas-liquid separation after water jacket stove heat, and the liquid after separation is returned in liquid tank and reused,
Gas after separation is lighted or is entered gas gathering station and recycles by flow process emptying.
In the other embodiment of coiled tubing underbalance sand flushing device of the present utility model, liquid nitrogen tank can not be included
Car, liquid nitrogen pump vehicle is directly connected with other liquid nitrogen offer devices such as nitrogen processed sled.Certainly liquid can also be not connected in nitrogen pipeline
Nitrogen pump truck, but be directly connected with nitrogen processed sled.
In other embodiments, foam line can also be not connected to foam pump truck, directly with the direct phase of foam ganerating unit
Even.
In other embodiments, choke manifold can not be included, chip removing device is directly connected with the main line.
In other embodiments, it is also possible to not including chip removing device, choke manifold directly returns out well head and is connected with sand washing.
In other embodiments, it is also possible to which, not including choke manifold and chip removing device, the main line is directly returned with sand washing
Go out well head to be connected.
In other embodiments, liquid tank can not include filtering tank and imbibition tank, and be only made up of mud settling tank, gas-liquid point
Liquid after is directly entered foam pump truck after mud settling tank process.
In other embodiments, the gas-liquid separation device can not include liquid tank, and accordingly, separate lines are not also wrapped
The second branch road and mud settling tank choke valve are included, fluid warp knuckle flow tube is converged and sequentially enters water jacket furnace and the liquid after gas-liquid separator process
Foam pump truck is directly entered, now, water jacket furnace choke valve can adjust the flow into the fluid of water jacket furnace, naturally it is also possible to no
Water jacket furnace choke valve is set.
In other embodiments, the position of chip removing device and choke manifold can exchange.
In other embodiments, nitrogen could alternatively be other sand washing gases, such as carbon dioxide, accordingly, liquid nitrogen pump vehicle
Could alternatively be liquid carbon dioxide pump truck.
Claims (7)
1. a kind of coiled tubing underbalance sand flushing device, including coiled tubing, it is characterised in that in parallel on the coiled tubing to connect
It is connected to the gas piping that sand washing gas is provided and the foam line that foam is provided；The coiled tubing underbalance sand flushing device, also
Including for returning out the gas-liquid separation device that well head is connected with sand washing, the gas-liquid separation device is included for returning out well with sand washing
The connected water jacket furnace of mouth（7）And the gas-liquid separator being connected with water jacket furnace（8）.
2. coiled tubing underbalance sand flushing device as claimed in claim 1, it is characterised in that be connected with the gas piping
Sand washing air pump car（2）, foam pump truck is connected with the foam line（3）.
3. coiled tubing underbalance sand flushing device as claimed in claim 1, it is characterised in that the water jacket furnace and sand washing are returned out
Water jacket furnace choke valve is provided with pipeline between well head（12）.
4. coiled tubing underbalance sand flushing device as claimed in claim 3, it is characterised in that the water jacket furnace is returned out with sand washing
Well head is connected by separate lines, and the separate lines include returning out the main line and be connected to supervisor that well head is connected with sand washing
Tie point and the second branch road on road, string sets the water jacket furnace in tie point（7）, the gas-liquid separation device sets including string
Liquid tank on the second branch road, the liquid tank and the gas-liquid separator（8）It is connected, arranges in the tie point
State water jacket furnace choke valve（12）, on second branch road mud settling tank choke valve is provided with（13）.
5. coiled tubing underbalance sand flushing device as claimed in claim 4, it is characterised in that the liquid tank includes going here and there successively
The mud settling tank of connection（9）, filtering tank（10）With imbibition tank（11）, the mud settling tank and second branch road and gas-liquid separator（8）
It is connected.
6. coiled tubing underbalance sand flushing device as claimed in claim 1, it is characterised in that the sand washing return out well head with point
String is provided with chip removing device between pipeline（5）And choke manifold（6）.
7. coiled tubing underbalance sand flushing device as claimed in claim 5, it is characterised in that the imbibition tank and the foam
Pipeline is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465883.8U CN206111115U (en) | 2016-05-19 | 2016-05-19 | Coiled tubing underbalance sand washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465883.8U CN206111115U (en) | 2016-05-19 | 2016-05-19 | Coiled tubing underbalance sand washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206111115U true CN206111115U (en) | 2017-04-19 |
Family
ID=58509104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620465883.8U Active CN206111115U (en) | 2016-05-19 | 2016-05-19 | Coiled tubing underbalance sand washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206111115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825155A (en) * | 2018-08-09 | 2018-11-16 | 鞍山万维科技有限公司 | Underbalance injection stream dredging vacuum suction covers outer method for removing blockage in a kind of well |
| CN112240173A (en) * | 2019-07-18 | 2021-01-19 | 中国石油化工股份有限公司 | Oil and gas well sand washing and well flushing method based on foam circulation, and defoaming solution and foaming solution for oil and gas well sand washing and well flushing |
-
2016
- 2016-05-19 CN CN201620465883.8U patent/CN206111115U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825155A (en) * | 2018-08-09 | 2018-11-16 | 鞍山万维科技有限公司 | Underbalance injection stream dredging vacuum suction covers outer method for removing blockage in a kind of well |
| CN108825155B (en) * | 2018-08-09 | 2024-03-29 | 上海万维亿通装备制造有限公司 | Method for removing blockage outside underground unbalanced jet dredging vacuum suction sleeve |
| CN112240173A (en) * | 2019-07-18 | 2021-01-19 | 中国石油化工股份有限公司 | Oil and gas well sand washing and well flushing method based on foam circulation, and defoaming solution and foaming solution for oil and gas well sand washing and well flushing |
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