CN110181407A - A kind of abrasive jet system and its application method of Casing-cutting With Submerged - Google Patents
A kind of abrasive jet system and its application method of Casing-cutting With Submerged Download PDFInfo
- Publication number
- CN110181407A CN110181407A CN201910463449.4A CN201910463449A CN110181407A CN 110181407 A CN110181407 A CN 110181407A CN 201910463449 A CN201910463449 A CN 201910463449A CN 110181407 A CN110181407 A CN 110181407A
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- nozzle
- hole
- casing
- spray gun
- mixing chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of abrasive jet systems of Casing-cutting With Submerged, including sequentially connected water tank, abradant jet generating device, oil pipe, down-hole centralizing device and spray gun, the spray gun end is equipped with the axial blind hole being connected to down-hole centralizing device, on multiple sagittal planes of the spray gun, radial equipartition is equipped with multiple nozzle bores being connected to axial blind hole, is equipped with nozzle in each nozzle bore；Nozzle includes pedestal, outer nozzle and the inner nozzle of coaxial arrangement, pedestal one end is connect with nozzle bore, the arrival end of outer nozzle is connect with base end face outer rim, it surrounds to form mixing chamber with pedestal, outer nozzle side wall is radially provided with multiple suction inlets being connected to mixing chamber, the inner nozzle is set in mixing chamber and arrival end is connect with base end face center, and outlet end is connected to mixing chamber.It can be realized recycling for material, be particularly suitable for having inconvenient traffic or the remote mountain areas of water shortage, and application method is simple, practical.The invention also discloses the application methods of the system.
Description
Technical field
The present invention relates to petroleum gas underground blocking technologies, and in particular to a kind of abradant jet system of Casing-cutting With Submerged
System and its application method.
Background technique
In recent years, more and more big to oil-gas resource demand with the fast development of Chinese society, exploit dynamics
It increases therewith, with the growth of oil and gas exploitation time, and the exhaustion of local petroleum resources, more and more oil/gas wells
Close to service life, the value continued to use is lost, stone gas well also just completes their mission.To prevent oil vapour pollution,
It for reaching the oil and gas wellhead of the operation time limit, needs to carry out it abandoned well operation according to national regulation, blocks oil/gas well, however seal
Stifled well head can not reach ideal effect, need boring one space of milling below well head, be formed with materials such as mixed muds
One blocking pad, such better effect.The technology for milling blocking space and device are bored at section not yet currently used for oil well plugging.
The device cut to down-hole casing is only had developed both at home and abroad at present, CN108915629A discloses one kind and is used for
The novel hydropower cutter device for cutting multilayer sleeve can complete the cutting of multilayer sleeve, but the disadvantage is that operating radius is small, blade holds
Frangibility, equipment making are complicated.
The shortcomings that in view of mechanical device, there is scholar to cut with abradant jet.Chen Jianbing etc. has carried out abrasive material and has penetrated
Casing-Cutting technical research is flowed, and in abandoned well at sea；Wang Rui has carried out circumgyration incision casing using abradant jet with equal
Test；Zhou Weidong etc. also studies preceding mixing Abrasive Water Jet Machining casing；Such as Australia, external some companies
WellOps company, Britain Circle, Proserv company and the U.S. Wachs company this research field grasped at
Ripe technology possesses perfect equipment.But they these research and equipment mainly apply to offshore field casing-pipe cutting, can only
Oil pipe is cut off, and cannot be at the milling of section；Using preceding mixing abrasive water-jet be added abrasive material must pressure release, when operation cannot protect
Demonstrate,prove continuous work；Abrasive material, water consumption are big, are not suitable for remote or water shortage land route area.
Summary of the invention
The object of the present invention is to provide a kind of abrasive jet system of Casing-cutting With Submerged and its application methods, can be real
Existing material recycles, and suitable for having inconvenient traffic or the remote mountain areas of water shortage, and application method is simple, practical.
The abrasive jet system of Casing-cutting With Submerged of the present invention, water tank, abrasive material including the connection of successively water route are penetrated
Flow generating apparatus, oil pipe, down-hole centralizing device and spray gun, it is blind that the spray gun end is equipped with the axial direction being connected to down-hole centralizing device water route
Hole, on multiple sagittal planes of the spray gun, radial equipartition is equipped with multiple nozzle bores being connected to axial blind hole, adjacent radial
Nozzle bore arrangement straggly on face, each nozzle bore is interior to be equipped with nozzle；The nozzle include coaxial arrangement pedestal, outer nozzle and
Inner nozzle, pedestal are equipped with axially extending bore, and one end is connect with nozzle bore, and the other end connects outer nozzle and inner nozzle, the outer nozzle
Arrival end connect with base end face outer rim, surround to form mixing chamber with pedestal, outer nozzle side wall be radially provided with it is multiple with it is mixed
The suction inlet of chamber is closed, the inner nozzle is set in mixing chamber and arrival end is connect with base end face center, outlet end
It is connected to mixing chamber.
Further, the quantity in single sagittal plane top nozzle hole isIn formula, n is nozzle hole number,
D0For the overall diameter of spray gun, l1For nozzle length exposed on spray gun, l2For the range at nozzle outlet end to working face, θ is
Nozzle outlet spread angle of jet.
Further, the spacing of Adjacent nozzle holes is on single sagittal planeIn formula, D0For the overall diameter of spray gun, n
For the quantity in single sagittal plane top nozzle hole；The spacing of adjacent radial plane isIn formula, l2For
To the range of working face, θ is nozzle outlet spread angle of jet, d at nozzle outlet end1For nozzle outlet end internal diameter.
Further, the water tank is connected with water-supply-pipe, which protrudes into down-hole casing, and protrudes into down-hole casing
Interior end is equipped with filter.
Further, the inner nozzle and outer nozzle are cylindrical, and the base end face center, which is equipped with, accommodates inner nozzle
Cavity, base end face edge are equipped with the external screw thread connecting with outer nozzle.
Further, the spray gun is equipped with the sealing-plug with down-hole casing corresponding matching far from one end of down-hole centralizing device.
According to the application method of the abrasive jet system of above-mentioned Casing-cutting With Submerged comprising following steps:
S1 is sequentially communicated water tank, abradant jet generating device, oil pipe, down-hole centralizing device and spray gun using pipeline, in spray gun
Nozzle bore in nozzle is installed, then to down-hole casing transfer spray gun so that nozzle is located to be cut section of down-hole casing；
S2 starts abradant jet generating device, generates the water and abrasive material fluid-mixing of low speeds flow, pass through oil pipe, underground
Centralizer, spray gun and nozzle are delivered to around to be cut section of down-hole casing, after conveying a certain amount of abrasive material, close abradant jet
The inlet valve of generating device；
S3 generates swiftly flowing water using abradant jet generating device, so that the swiftly flowing water is entered nozzle and formed
Abrasive material around to be cut section of down-hole casing is sucked into mixing chamber from suction inlet by Involving velocity, after mixing by negative pressure
The abrasive material for projecting, while projecting from the outlet end of outer nozzle reenters mixing chamber again under the action of suction inlet, and realization follows
Ring is worked continuously.
The present invention has the advantages that compared with prior art.
1, the present invention on spray gun by being arranged multiple nozzles, and realizes the initial stage input of abrasive material by the nozzle and recycle
Continuous use, reduces the loss of abrasive material, so that the system is suitable for having inconvenient traffic or the remote mountain areas of water shortage.It protects simultaneously
The continuous milling to down-hole casing has been demonstrate,proved, has reduced the number that makes a trip, improves cutting efficiency.
2, the present invention is defined by the arrangement parameter to nozzle, ensure that the abradant jet ejected can sufficiently cover
Cased to be cut section of cover wells, it is not necessarily to rotary spray gun, and then eliminates the driving device for driving spray gun to rotate, so that knot
Structure is simpler, convenient for assembling, disassembly, carrying and later maintenance, reduces operating cost；The mill that each nozzle ejects simultaneously
It is mutually cooperateed between material jet stream, avoids the occurrence of turbulent flow, ensure that the cutting efficiency of abradant jet.
3, nozzle arrangements of the present invention are simple, manufacture handling ease, easy to produce.
4, application method of the present invention is simple and easy, practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the abrasive jet system of Casing-cutting With Submerged of the present invention；
Fig. 2 is the section structure diagram of spray gun of the present invention；
Fig. 3 is the structural schematic diagram of nozzle of the present invention；
Fig. 4 is the arrangement front view of nozzle of the present invention；
Fig. 5 is the arrangement top view of nozzle of the present invention；
Fig. 6 is the operation schematic diagram of nozzle of the present invention.
In figure, 1-spray gun, 11-axial blind holes, 12-nozzle bores, 2-nozzles, 21-pedestals, 22-outer nozzles, 23-
Inner nozzle, 24-suction inlets, 25-mixing chamber, the 26-the first external screw thread, 27-internal screw threads, the 28-the second external screw thread, 3-wells
Lower centralizer, 4-oil pipes, 5-connecting elements, 6-abradant jet generating devices, 60-inlet valves, 61-pump groups, 62-abrasive materials
Tank, 63-abrasive material mixing chambers, 64-filter assemblies, 65-inlet valves, 66-safety valves, 67-pressure regulator valves, 68-pressure gauges,
69-flowmeters, 7-water tanks, 8-water-supply-pipes, 81-filters, 9-sealing-plugs.
Specific embodiment
Referring to Fig. 1 to Fig. 6, shown in Casing-cutting With Submerged abrasive jet system, the water tank including the connection of successively water route
7, abradant jet generating device 6, oil pipe 4, down-hole centralizing device 3 and spray gun 1,1 end of spray gun are equipped with and 3 water of down-hole centralizing device
The axial blind hole 11 of road connection, on multiple sagittal planes of the spray gun 1, radial equipartition is equipped with multiple and axial blind hole 11 and connects
Logical nozzle bore 12, the arrangement straggly of nozzle bore 12 on adjacent radial face are equipped with nozzle 2 in each nozzle bore 12.The nozzle 2
Pedestal 21, outer nozzle 22 and inner nozzle 23 including coaxial arrangement, pedestal 21 are equipped with axially extending bore, and one end is equipped with and nozzle bore 12
First external screw thread 26 of connection, the other end connect outer nozzle 22 and inner nozzle 23, the arrival end and pedestal 21 of the outer nozzle 22
The connection of end face outer rim, surrounds to form mixing chamber 25 with pedestal 21, and 22 side wall of outer nozzle is radially provided with multiple and mixing chamber 25
The suction inlet 24 of connection, the inner nozzle 23 is set in mixing chamber 25 and arrival end is connect with 22 end face center of pedestal, exports
End is connected to mixing chamber 25.
The inner nozzle 23 and outer nozzle 22 are cylindrical, and the pedestal 21 is equipped with far from the end face center of spray gun and accommodates
The cavity of inner nozzle 23, the cavity inner wall are equipped with internal screw thread 27, and pedestal 21 is equipped with and outer nozzle 22 far from the end face edge of spray gun
Second external screw thread 28 of connection.
The abradant jet generating device 6, including pump group 61, abrasive can 62 and the abrasive material being connected to 7 water outlet of water tank
Mixing chamber 63, the pump group 61 for providing high pressure water, the abrasive can 62 for storing abrasive material, the abrasive material mixing chamber 63 with
Pump group 61 is connected with abrasive can 62, for the water of abrasive material and pump group conveying to be mixed, abrasive material mixing chamber 63 and abrasive can 62 it
Between pipeline be equipped with inlet valve 60.The pipeline that pump group 61 is connected to water tank 7 is equipped with inlet valve 65, inlet valve 65 and water tank 7
Between be equipped with filter assemblies 64,61 water outlet of pump group is connected to water tank 7 by a bye-pass, and the bye-pass is equipped with safety valve
66, the safety valve 66 is used to adjust the maximum working pressure of abradant jet generating device 6.From pump group 61 to abrasive material mixing chamber 63
Between pipeline on be successively arranged pressure regulator valve 67, pressure gauge 68 and flowmeter 69, the pressure regulator valve 67 for adjusting loine pressure,
The pressure gauge 68 is for showing loine pressure, and the flowmeter 69 is for showing piping flow.The flowmeter 69 and abrasive material
Pipeline between mixing chamber 63 is equipped with the branch line being connected to abrasive can 62, defeated into abrasive can 62 by the branch line
Send water.The outlet of the abrasive material mixing chamber 63 is connected to by connecting elements 5 with oil pipe 4, and the oil pipe 4 is high-pressure oil pipe.
The water tank 7 is connected with water-supply-pipe 8, which protrudes into the down-hole casing in oil/gas well, and protrudes into oil
End in gas well is equipped with filter 81.The water assembled in oil/gas well in operation process enters water tank 7 by water-supply-pipe 8 and recycles
It uses, the filter 81 of end plays the role of impurity screening, ensure that the quality into the water of water tank.
In order to avoid abrasive material deposits to down-hole casing bottom, remain at abrasive material around spray gun 1, in the spray gun 1
One end far from down-hole centralizing device 3 is equipped with the sealing-plug 9 with down-hole casing inner wall corresponding matching, the end one of the spray gun 1
Connecting column is formed, the sealing-plug 9 is threadedly connected to the free end of connecting column.
In order to maximumlly guarantee cutting effect, while from cost consideration, to 2 quantity of nozzle and spacing on spray gun 1
Rationally it is arranged.
Referring to fig. 2 to Fig. 6, D0For the overall diameter of spray gun, d0For the internal diameter of the upstream side of the injector, d1For nozzle outlet end
Internal diameter, d2For the internal diameter of inner nozzle outlet end, d3For the internal diameter of suction inlet, l1For nozzle length exposed on spray gun, l2It is outer
For nozzle exit end to the range of working face, θ is nozzle outlet spread angle of jet.
Individually the quantity in sagittal plane top nozzle hole is
The spacing of Adjacent nozzle holes is on single sagittal planeIn formula, n is single sagittal plane top nozzle hole
Quantity.
The spacing of adjacent radial plane isIn formula, R is single-nozzle jet stream institute energy
Working radius is covered, its calculation formula is:
The application method of the abrasive jet system of above-mentioned Casing-cutting With Submerged comprising following steps:
S1 is sequentially communicated water tank 7, abradant jet generating device 6, oil pipe 4, down-hole centralizing device 3 and spray gun 1 using pipeline,
Nozzle 2 is installed in the nozzle bore 11 of spray gun 1, inlet valve 65 and inlet valve 63 are closed, to 7 topped up with water of water tank, to abrasive can 62
Middle filling abrasive material.Then spray gun 1 is transferred to down-hole casing, so that nozzle 2 is located to be cut section of down-hole casing.
S2 starts abradant jet generating device 6, opens inlet valve 65, and pump group 61 is made to bring into operation work, adjusts pressure regulator valve
67, so that abradant jet generating device 6 reaches operating pressure, inlet valve 60 is then opened, so that abrasive material is mixed with water in abrasive material
It mixes, is delivered to by oil pipe 4, down-hole centralizing device 3, spray gun 1 and nozzle 2 around to be cut section of down-hole casing in chamber 63, it is defeated
After sending a certain amount of abrasive material, the inlet valve 60 of abradant jet generating device 6, the conveying grinding material no longer into down-hole casing are closed.
S3 generates swiftly flowing water using abradant jet generating device 6, and the swiftly flowing water is made to enter 2 shape of nozzle
At negative pressure, the abrasive material around to be cut section of down-hole casing is sucked into from suction inlet 24 by mixing chamber 25 by Involving velocity,
The abrasive material for projecting, while projecting from the outlet end of outer nozzle 22 after mixing reenters mixing chamber under the action of suction inlet 24 again
Room 25 realizes that the circulation of abrasive material is worked continuously.The water assembled in down-hole casing in operation process enters water tank by water-supply-pipe 8
7, the circulation for realizing water is worked continuously.
Claims (7)
1. a kind of abrasive jet system of Casing-cutting With Submerged, water tank (7), abradant jet including the connection of successively water route are filled
Set (6), oil pipe (4), down-hole centralizing device (3) and spray gun (1), it is characterised in that: spray gun (1) end is equipped with and down-hole centralizing
Device (3) water route connection axial blind hole (11), on multiple sagittal planes of the spray gun (1), radial equipartition be equipped with it is multiple with
The nozzle bore (12) of axial blind hole (11) connection, nozzle bore (12) arrangement straggly on adjacent radial face, each nozzle bore (12)
It is interior to be equipped with nozzle (2)；
The nozzle (2) includes pedestal (21), outer nozzle (22) and the inner nozzle (23) of coaxial arrangement, and pedestal (21) is equipped with axial
Through-hole, one end are connect with nozzle bore (12), and other end connection outer nozzle (22) and inner nozzle (23), outer nozzle (22) enter
Mouth end is connect with pedestal (21) end face outer rim, surrounds to be formed mixing chamber (25) with pedestal (21), outer nozzle (22) side wall is equipped with
Multiple suction inlets (24) being connected to mixing chamber (25), the inner nozzle (23) be set to mixing chamber (25) in and arrival end with
The connection of pedestal (21) end face center, outlet end is connected to mixing chamber (25).
2. the abrasive jet system of Casing-cutting With Submerged according to claim 1, it is characterised in that: on single sagittal plane
The quantity of nozzle bore isIn formula, n is nozzle hole number, D0For the overall diameter of spray gun, l1It is being sprayed for nozzle
Exposed length, l on rifle2For the range at nozzle outlet end to working face, θ is nozzle outlet spread angle of jet.
3. the abrasive jet system of Casing-cutting With Submerged according to claim 2, it is characterised in that: on single sagittal plane
The spacing of Adjacent nozzle holes isIn formula, D0For the overall diameter of spray gun, n is the quantity in single sagittal plane top nozzle hole；
The spacing of adjacent radial plane isIn formula, l2For the target at nozzle outlet end to working face
Away from θ is nozzle outlet spread angle of jet, d1For nozzle outlet end internal diameter.
4. the abrasive jet system of Casing-cutting With Submerged according to claim 1 or 2, it is characterised in that: the water tank (7)
Water-supply-pipe (8) are connected with, which protrudes into down-hole casing, and protrudes into the end in down-hole casing and be equipped with filtering
Device (81).
5. the abrasive jet system of Casing-cutting With Submerged according to claim 1 or 2, it is characterised in that: the inner nozzle
(23) and outer nozzle (22) is cylindrical, and pedestal (21) end face center is equipped with the cavity for accommodating inner nozzle (23), pedestal
(21) end face edge is equipped with the external screw thread connecting with outer nozzle (22).
6. the abrasive jet system of Casing-cutting With Submerged according to claim 1 or 2, it is characterised in that: the spray gun (1)
One end far from down-hole centralizing device (3) is equipped with the sealing-plug (9) with down-hole casing corresponding matching.
7. the application method of the abrasive jet system of described in any item Casing-cutting With Submergeds according to claim 1~6, feature
It is, includes the following steps:
S1 is sequentially communicated water tank (7), abradant jet generating device (6), oil pipe (4), down-hole centralizing device (3) and spray using pipeline
Rifle (1) installs nozzle (2) in the nozzle bore (12) of spray gun (1), then spray gun (1) is transferred to down-hole casing, so that nozzle
(2) it is located to be cut section of down-hole casing；
S2 starts abradant jet generating device (6), generates the water and abrasive material fluid-mixing of low speeds flow, pass through oil pipe (4), well
Lower centralizer (3), spray gun (1) and nozzle (2) are delivered to around to be cut section of down-hole casing, after conveying a certain amount of abrasive material,
Close the inlet valve (60) of abradant jet generating device (6)；
S3 generates swiftly flowing water using abradant jet generating device (6), the swiftly flowing water is made to enter nozzle (2) shape
At negative pressure, the abrasive material around to be cut section of down-hole casing is sucked into from suction inlet (24) by mixing chamber by Involving velocity
(25), after mixing from the outlet end of outer nozzle (22) project, while project abrasive material again under the action of suction inlet (24) again
Into mixing chamber (25), realize that circulation is worked continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463449.4A CN110181407B (en) | 2019-05-30 | 2019-05-30 | Abrasive jet system for cutting down-hole casing and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463449.4A CN110181407B (en) | 2019-05-30 | 2019-05-30 | Abrasive jet system for cutting down-hole casing and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110181407A true CN110181407A (en) | 2019-08-30 |
| CN110181407B CN110181407B (en) | 2020-10-27 |
Family
ID=67718922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910463449.4A Active CN110181407B (en) | 2019-05-30 | 2019-05-30 | Abrasive jet system for cutting down-hole casing and use method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN110181407B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953981A (en) * | 2021-10-29 | 2022-01-21 | 山东工业陶瓷研究设计院有限公司 | Metal connecting ring pretreatment method and coarsening system |
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| CN109281628A (en) * | 2018-10-09 | 2019-01-29 | 中国石油大学(华东) | Coiled tubing abrasive grain jet stream plugging removal and stimulation device |
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| WO2007049026A1 (en) * | 2005-10-24 | 2007-05-03 | Geoprober Drilling Limited | Cutting device and method |
| CN103334723A (en) * | 2013-07-09 | 2013-10-02 | 重庆大学 | Device and method for underground coal mine hydraulic slit cutting self-suction type material abrading jet flow generation |
| US9464399B2 (en) * | 2014-01-28 | 2016-10-11 | Ats Smart Solutions, Llc | Pile cutter |
| CN105003221A (en) * | 2015-06-16 | 2015-10-28 | 东北石油大学 | Double-concentric controllable-speed cutter using abrasive jets |
| CN108425661A (en) * | 2018-04-16 | 2018-08-21 | 中国石油大学(华东) | Coiled tubing steel grit jet stream perforating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113953981A (en) * | 2021-10-29 | 2022-01-21 | 山东工业陶瓷研究设计院有限公司 | Metal connecting ring pretreatment method and coarsening system |
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| Publication number | Publication date |
|---|---|
| CN110181407B (en) | 2020-10-27 |
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