CN105108655B - A kind of supertension abradant jet down-hole cutting implement - Google Patents
A kind of supertension abradant jet down-hole cutting implement Download PDFInfo
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- CN105108655B CN105108655B CN201510537001.4A CN201510537001A CN105108655B CN 105108655 B CN105108655 B CN 105108655B CN 201510537001 A CN201510537001 A CN 201510537001A CN 105108655 B CN105108655 B CN 105108655B
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Abstract
The invention discloses a kind of supertension abradant jet down-hole cutting implement, including the outside support module, hydraulic-driven module, righting module, supertension circumgyration incision head module and the cutting speed monitoring modular that are connected with each other.The present invention can carry out integral cutting recovery from inside works, with safe efficient, environmentally friendly and low energy consumption, it is adaptable to the cutting disassembling operation to discarded platform spud leg and well head.
Description
Technical field
The present invention relates to a kind of down-hole cutting implement, in particular, is to be related to a kind of supertension abradant jet down-hole to cut
Cutting mill has.
Background technology
Offshore oil and gas production facility throw aside it is most important, be also the one procedure for first having to solve be to discarded platform spud leg and
The cutting disassembling of well head, this will not only consider operational technology, cost, safety, reliability and the method having to comply with
The problems such as Laws ＆ Regulations, what is more important, must emphasis consideration environmental protection problems.Therefore, configure the useless of efficient, safety and environmental protection
Abandoned well cutting process technology and equipment, is the offshore platform premise of dismounting and guarantee safely.
According to provisions of laws and regulations, platform leg and well head need cutting back at certain depth under the mud face of seabed
Receive, parts casing pipe belongs to multi-layer compound structure under well head, in addition to multiple layer metal sleeve pipe, between sleeve pipe, also have cementing concrete ring, the knot
Structure thickness is big, and intensity is high, and cutting recovery difficult is larger.At present, submerged structure cutting technique mainly has oxy-arc cutting, thermal jet
Rifle cutting, diamond saw cutting, the cutting of shot-drilling cable, mechanical cutter cutting, cumulative charge and abradant jet cutting etc..For mud
Spud leg and well head cutting under face, can only be carried out from inside works by CUMULATIVE BLASTING, mechanical cutter and abradant jet technology
Cutting.And CUMULATIVE BLASTING is serious for marine environmental pollution, mechanical cutter is once only capable of cutting one layer of sleeve pipe and cutter is fragile.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided one kind can carry out whole from inside works
Body cutting is reclaimed, the supertension abradant jet down-hole cutting implement with technological merits such as safe efficient, environmentally friendly and low energy consumption.
The purpose of the present invention is achieved through the following technical solutions.
The supertension abradant jet down-hole cutting implement of the present invention, drives including the outside support module, hydraulic pressure being connected with each other
Dynamic model block, righting module, supertension circumgyration incision head module and cutting speed monitoring modular；
The outside support module includes that middle part is provided with the first flange disk of high pressure line joint, the first flange disk
Bottom is connected with second flange disk by the upper support column of vertical arrangement, and the second flange disk is connected with the 3rd ring flange, institute
State the 3rd ring flange and the 4th ring flange is connected with by the lower support post of vertical arrangement；
The hydraulic-driven module includes vertically being fixed on the first flange disk and second flange by motor fixed plate
The hydraulic motor of marginal position between disk, the motor fixed plate are fixedly connected with the upper support column, under the hydraulic motor
Portion is connected with reductor, flanged reductor, and by reductor fixed plate, vertically connection is described for the flanged reductor bottom
Second flange disk, the bottom output shaft of the flanged reductor are connected with power transmission shaft by shaft coupling, and the power transmission shaft is passed through
4th ring flange is connected with the first little gear, first little gear and the internal tooth being arranged in supertension circumgyration incision head module
Circle is meshed；
The righting module includes the first side plate being parallel to each other and the second side plate, first side plate and the second side plate
Both ends are connected by end fixed block respectively, are fixedly installed hydraulic cylinder between first side plate and the second side plate, described
Hydraulic cylinder two ends are respectively articulated with the locking jaw with end fixed block clamping, and the locking jaw and the first side plate and the second side plate are lived
Dynamic connection；The righting module is arranged at the marginal position between the 3rd ring flange and the 4th ring flange, and respectively with institute
The axis for stating outside support module and hydraulic-driven module is parallel；
The supertension circumgyration incision head module includes the rotary head being arranged between the 4th ring flange and the 5th ring flange
Outer tube, the middle inside of the rotary head outer tube are provided with annular protrusion, and the rotary head outer barrel is provided with upper outside
Mandrel with annular protrusion；Under the annular protrusion upper surface of the rotary head outer tube and the annular protrusion of the mandrel
Be provided with plane bearing and sliding bearing between end face, the annular protrusion lower surface and the 5th ring flange of the rotary head outer tube it
Between be provided with sliding bearing, stop washer and round nut；The mandrel top and the internal tooth being arranged in rotary head outer tube
Circle is meshed, and bottom is connected with the 6th ring flange, and the 6th ring flange bottom is connected with nylon outer shell；In the mandrel
Portion is provided with the rotatory sealing with high pressure aquaporin, is connected with high pressure line joint by high pressure line at the top of the rotatory sealing
Connect, bottom rotatable portion is fixedly connected with mandrel, and bottom is connected with by high pressure line and is arranged inside nylon outer shell
L-type nozzle seat；The nozzle carrier other end is connected with nozzle by nozzle fixed cover, and the nozzle fixed cover is connected with
Trachea wire terminal, and the nylon outer shell housing of nozzle fixed cover correspondence position is provided with through hole；
The cutting speed monitoring modular includes the angular transducer being fixed on the 4th ring flange by sensor stand,
The output shaft of the angular transducer is connected with sensor power transmission shaft by small-sized shaft coupling, and the sensor power transmission shaft is connected with
Second little gear, second little gear are meshed with the ring gear being arranged in rotary head outer tube.
The first flange disk top is evenly arranged with hanger.
The side wall of the first flange disk is provided with the flat head screw of fixed high pressure line joint.
The locking jaw is provided with sawtooth with one end of end fixed block clamping.
Short support column is vertically installed between first side plate and the second side plate.
The nylon outer shell housing of through hole relative position is provided with wiring hole.
Axle sleeve, the axle sleeve are respectively arranged between the power transmission shaft and the 3rd ring flange and the contact surface of the 4th ring flange
It is made up of tin bronze material.
Compared with prior art, the beneficial effect brought by technical scheme is：
(1) present invention passes through to arrange righting module, when entering in sleeve pipe under the present invention, it is ensured that make the present invention all the time can
Specified location is fixed on enough.
(2) the hydraulic-driven module arranged in the present invention, can drive supertension circumgyration incision head module to rotate, be this
Bright offer power.
(3) position signalling for measuring can be fed back to display instrument by the cutting speed monitoring modular arranged in the present invention
On, the anglec of rotation of real-time monitoring supertension circumgyration incision head module.
(4) present invention directly can be lowered into inside material to be cut, can realize overall cutting is carried out from inside material to be cut
Cut recovery.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the A-A profiles of Fig. 1.
Fig. 3 is the generalized section of supertension circumgyration incision head module in the present invention.
Fig. 4 is the scheme of installation of cutting speed monitoring modular in the present invention.
Reference：The 3rd method of 1 hanger, 2 first flange disk, 3 upper support column, 4 motor fixed plate, 5 second flange disk 6
7 times 9 the 5th the 6th ring flange of ring flange 11 of rotary head outer tube 10 of the 4th ring flange of support column 8,12 nylon outer shells of blue disk
13 trachea wire terminal, 14 nozzle fixed cover, 15 nozzle, 16 nozzle carrier, 17 angular transducer, 18 locking jaw, 19 hydraulic cylinder 20 subtracts
Flanged 22 reductor, 23 hydraulic motor, 24 high pressure line joint, 25 flat head screw, 26 shaft coupling that slows down of fast machine fixed plate 21
27 31 32 short support column of end fixed block of power transmission shaft 28 first little gear, 29 ring gear, 30 high pressure line of device, 33 axle sleeve
34 first side plate, 35 round nut, 36 stop washer, 37 sliding bearing, 38 mandrel, 39 plane bearing, 40 rotatory sealing 41
42 sensor power transmission shaft of small-sized shaft coupling, 43 sensor stand, 44 second little gear, 45 second side plate
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The supertension abradant jet down-hole cutting implement of the present invention, drives including the outside support module, hydraulic pressure being connected with each other
Dynamic model block, righting module, supertension circumgyration incision head module and cutting speed monitoring modular.
The outside support module includes that middle part is provided with the first flange disk 2 of high pressure line joint 24, first method
The top of blue disk 2 can be evenly arranged with hanger 1, and the side wall of the first flange disk 2 is provided with for fixing high pressure line joint
24 flat head screw 25, the bottom of the first flange disk 2 are connected with second by the upper support column 3 of four homogeneous vertical arrangements
Ring flange 5, between the first flange disk 2 and second flange disk 5, the second flange disk 5 leads to the upper support column 3
Cross boss and flange is axially located by connecting and has the 3rd ring flange 6, and use straight pin radial positioning, the 3rd ring flange 6 passes through
The lower support post 7 of four homogeneous vertical arrangements is connected with the 4th ring flange 8.The described each part of outside support module passes through
Threaded connection is without the need for welding, once there is parts damages fast changeable.
The hydraulic-driven module includes being vertically arranged at the first flange disk 2 and the second method by motor fixed plate 4
The hydraulic motor 23 of marginal position between blue disk 5, the motor fixed plate 4 are fixedly connected with the upper support column 3, the hydraulic pressure
23 bottom of motor is connected with reductor 22, flanged reductor 21, and 21 bottom of flanged reductor is fixed by reductor
Plate 20 vertically connects the second flange disk 5, and the bottom output shaft of the flanged reductor 21 is connected with by shaft coupling 26
Power transmission shaft 27, the power transmission shaft 27 are connected with the first little gear 28, first little gear 28 be arranged at supertension rotary cutting
The ring gear 29 cut in head module is meshed.27 upper and lower ends of the power transmission shaft are each passed through the 3rd ring flange 6 and the 4th flange
Disk 8, can be respectively arranged with axle sleeve 33 between the power transmission shaft 27 and the 3rd ring flange 6 and the contact surface of the 4th ring flange 8, described
Axle sleeve 33 can be made up of tin bronze material.The linear type arrangement of described hydraulic-driven module, positioned at the internal edge of the present invention
Eccentric position, is not take up the central axis space of outside support module, and axis is parallel with outside support module centers axle.
The righting module includes the first side plate 34 being parallel to each other and the second side plate 45, first side plate 34 and second
The both ends of side plate 45 are connected by end fixed block 31 respectively, and short can be vertically installed between the first side plate and the second side plate
Dagger 32, is fixedly installed hydraulic cylinder 19,19 two ends of hydraulic cylinder difference between first side plate 34 and the second side plate 45
The locking jaw 18 with 31 clamping of end fixed block is hinged with, the locking jaw 18 is provided with one end of 31 clamping of end fixed block
Sawtooth, the locking jaw 18 can be flexibly connected with the first side plate 34 and the second side plate 45 by bearing pin, and the hydraulic cylinder 19 is controlled
Locking jaw 18 extends and retracts action.The righting module is arranged between the 3rd ring flange 6 and the 4th ring flange 8
Marginal position, can be connected with the 3rd ring flange 6 and the 4th ring flange 8 respectively by bearing pin, and respectively with the outside support mould
The axis of block and hydraulic-driven module is parallel.
The supertension circumgyration incision head module includes to be fixedly installed on the 4th ring flange 8 and the 5th flange by bearing pin
Rotary head outer tube 9 between disk 10, two end faces of the rotary head outer tube 9 can be provided with O-ring groove, in rotary head outer tube 9
Sealing area is internally formed, the middle inside of the rotary head outer tube is provided with annular protrusion, sets inside the rotary head outer tube 9
It is equipped with the annular of mandrel 38 of the upper outside with annular protrusion, the i.e. annular protrusion of rotary head outer tube 9 and mandrel 38
Raised phase clamping；The annular protrusion upper surface of the rotary head outer tube 9 and the annular protrusion lower surface of the mandrel 38 it
Between be provided with plane bearing 39 and sliding bearing 37, annular protrusion lower surface and the 5th ring flange 10 of the rotary head outer tube 9
Between be provided with sliding bearing 37, stop washer 36 and round nut 35, mandrel 38 can pass through stop washer 36 and round nut
35 carry out axially position.38 top of the mandrel and 29 phase of ring gear for being arranged at rotary head outer tube annular convex upper portion
Engagement, bottom are connected with the 6th ring flange 11, and 11 bottom of the 6th ring flange is connected with nylon outer shell 12.The mandrel
38 are internally provided with the rotatory sealing 40 with high pressure aquaporin, pass through high pressure line 30 and high pressure at the top of the rotatory sealing 40
Pipe joint 24 connects, and bottom rotatable portion is fixedly connected with mandrel 38 by pin, and bottom passes through high pressure line 30
The L-type nozzle seat 16 being arranged inside nylon outer shell 12 is connected with, the high pressure line 30 is arranged vertically within the present invention's
On central shaft, without sweep.16 other end of the nozzle carrier is connected with nozzle 15, i.e. nozzle 15 by nozzle fixed cover 14 and leads to
Cross nozzle fixed cover 14 to be pressed on 16 endoporus of nozzle carrier, the nozzle fixed cover 14 is connected with trachea wire terminal 13, and nozzle
12 housing of nylon outer shell of 14 correspondence position of fixed cover is provided with through hole, and through hole can be circle, the nylon with through hole relative position
12 housing of shell is provided with wiring hole, and wiring hole can be rectangle.
The cutting speed monitoring modular includes the angle sensor being fixed on the 4th ring flange 8 by sensor stand 43
Device 17, can be fixed by bearing pin between sensor stand 43 and the 4th ring flange 8, and the output shaft of the angular transducer 17 passes through
Small-sized shaft coupling 41 is connected with sensor power transmission shaft 42, and the sensor power transmission shaft 42 is connected with the second little gear 44, and described
Two pinion 44 is meshed with the ring gear 29 being arranged in rotary head outer tube 9.
Up to 250MPa, basic parts adopt 316 stainless steels to the operating pressure of the present invention, can root between each part
According to needing to arrange O-ring seal, the O-ring seal can adopt fluorubber material.
The operation principle of the present invention：Connect hanger 1 with steel wire rope, the present invention transferred to the designated depth of inside pipe casing,
To 19 fuel feeding of hydraulic cylinder, piston rod elongation is promoted, the 18 sawtooth end dieback of locking jaw at 19 two ends of hydraulic cylinder will be hinged in sleeve pipe
On inwall, keep the hydraulic fluid pressure in hydraulic cylinder 19 to be 11MPa, make the present invention be fixed on specified location all the time.
Hydraulic oil being injected to hydraulic motor 23, driving hydraulic motor 23 to rotate, the output torque of hydraulic motor 23 is by subtracting
Fast machine 22, flanged reductor 21, shaft coupling 26, power transmission shaft 27, the first little gear 28 and ring gear 29 are delivered to mandrel
On 38, mandrel 38 is made around central axis of the present invention.
40 points of rotatory sealing is upper and lower two parts, and there is high pressure aquaporin centre, and upper and lower part can rotate against, top
It is connected with high pressure line 30, bottom is fixed on inside 38 centre bore of mandrel.When mandrel 38 is rotated, it is rotated close
40 lower rotationals are sealed, while driving the 6th ring flange 11 and nylon outer shell 12 to rotate.Nozzle 15 is installed on nozzle carrier 16 and nozzle
In the space that fixed cover 14 coordinates, and 40 the latter half synchronous axial system of rotatory sealing can be around central axis of the present invention.Nozzle is solid
Surely set 14 is externally connected to trachea wire terminal 13, can form air cavity in 15 exit of nozzle and improve cutting efficiency during operation.Pass through
High pressure line pours into the abrasive materials such as water sand mixture, to needing cutting part to cut in 15 rotary course of nozzle.
Ring gear 29 drives the second little gear 44 for engaging to rotate when rotating, and the second little gear 44 will be by passing
Rotating speed is delivered to angular transducer 17 by sensor power transmission shaft 42 and small-sized shaft coupling 41.The position for measuring is believed by angular transducer 17
Number feed back on display instrument, the anglec of rotation of real-time monitoring supertension circumgyration incision head module.
Although being described to the function and the course of work of the present invention above in conjunction with accompanying drawing, the invention is not limited in
Above-mentioned concrete function and the course of work, above-mentioned specific embodiment are only schematic, rather than restricted, ability
The those of ordinary skill in domain the present invention enlightenment under, without departing from present inventive concept and scope of the claimed protection situation
Under, many forms can also be made, these are belonged within the protection of the present invention.
Claims (7)
1. a kind of supertension abradant jet down-hole cutting implement, is characterized in that, including the outside support module, hydraulic pressure that are connected with each other
Drive module, righting module, supertension circumgyration incision head module and cutting speed monitoring modular；
The outside support module includes that middle part is provided with the first flange disk (2) of high pressure line joint (24), first method
Blue disk (2) bottom is connected with second flange disk (5), second flange disk (5) connection by the upper support column (3) of vertically arrangement
There is the 3rd ring flange (6), the 3rd ring flange (6) is connected with the 4th ring flange by the lower support post (7) of vertical arrangement
(8)；
The hydraulic-driven module includes vertically being fixed on the first flange disk (2) and the second method by motor fixed plate (4)
The hydraulic motor (23) of marginal position between blue disk (5), the motor fixed plate (4) are fixedly connected with the upper support column (3),
Hydraulic motor (23) bottom is connected with reductor (22), flanged reductor (21), under the flanged reductor (21)
Portion vertically connects the second flange disk (5) by reductor fixed plate (20), and the bottom of the flanged reductor (21) is defeated
Shaft is connected with power transmission shaft (27) by shaft coupling (26), and the power transmission shaft (27) is connected with first through the 4th ring flange (8)
Little gear (28), first little gear (28) are mutually nibbled with the ring gear (29) being arranged in supertension circumgyration incision head module
Close；
The righting module includes the first side plate (34) being parallel to each other and the second side plate (45), first side plate (34) and
The both ends of two side plates (45) are connected by end fixed block (31) respectively, first side plate (34) and the second side plate (45) it
Between be fixedly installed hydraulic cylinder (19), hydraulic cylinder (19) two ends are respectively articulated with the locking with end fixed block (31) clamping
Pawl (18), the locking jaw (18) are flexibly connected with the first side plate (34) and the second side plate (45)；The righting module is arranged at
Marginal position between 3rd ring flange (6) and the 4th ring flange (8), and respectively with the outside support module and hydraulic pressure
The axis of drive module is parallel；
The supertension circumgyration incision head module includes the rotation being arranged between the 4th ring flange (8) and the 5th ring flange (10)
Head outer tube (9), the middle inside of the rotary head outer tube (9) are provided with annular protrusion, arrange inside the rotary head outer tube (9)
There is mandrel of the upper outside with annular protrusion (38)；The annular protrusion upper surface of the rotary head outer tube (9) with described turn
Plane bearing (39) and sliding bearing (37), the rotary head outer tube are provided between the annular protrusion lower surface of aroused in interest axle (38)
(9) sliding bearing (37), stop washer (36) and circle spiral shell are provided between annular protrusion lower surface and the 5th ring flange (10)
Female (35)；Mandrel (38) top is meshed with the ring gear (29) being arranged in rotary head outer tube (9), bottom connection
There is the 6th ring flange (11), the 6th ring flange (11) bottom is connected with nylon outer shell (12)；In the mandrel (38)
Portion is provided with the rotatory sealing with high pressure aquaporin (40), by high pressure line (30) and height at the top of the rotatory sealing (40)
Pressure pipe wire terminal (24) connects, and bottom rotatable portion is fixedly connected with mandrel (38), and bottom passes through high pressure line (30)
It is connected with and is arranged at internal L-type nozzle seat (16) of nylon outer shell (12)；Nozzle carrier (16) other end passes through nozzle
Fixed cover (14) is connected with nozzle (15), and the nozzle fixed cover (14) is connected with trachea wire terminal (13), and nozzle fixed cover
(14) nylon outer shell (12) housing of correspondence position is provided with through hole；
The cutting speed monitoring modular includes the angle sensor being fixed on the 4th ring flange (8) by sensor stand (43)
Device (17), the output shaft of the angular transducer (17) are connected with sensor power transmission shaft (42), institute by small-sized shaft coupling (41)
State sensor power transmission shaft (42) and be connected with the second little gear (44), second little gear (44) be arranged at rotary head outer tube
(9) ring gear (29) in is meshed.
2. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, the first flange disk
(2) top is evenly arranged with hanger (1).
3. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, the first flange disk
(2) side wall is provided with the flat head screw (25) of fixed high pressure line joint (24).
4. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, the locking jaw (18) with
One end of end fixed block (31) clamping is provided with sawtooth.
5. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, first side plate (34)
And second be vertically installed with short support column (32) between side plate (45).
6. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, with through hole relative position
Nylon outer shell (12) housing is provided with wiring hole.
7. supertension abradant jet down-hole cutting implement according to claim 1, is characterized in that, the power transmission shaft (27) with
Axle sleeve (33) is respectively arranged between 3rd ring flange (6) and the contact surface of the 4th ring flange (8), the axle sleeve (33) is blue or green by stannum
Copper material is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537001.4A CN105108655B (en) | 2015-08-27 | 2015-08-27 | A kind of supertension abradant jet down-hole cutting implement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537001.4A CN105108655B (en) | 2015-08-27 | 2015-08-27 | A kind of supertension abradant jet down-hole cutting implement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105108655A CN105108655A (en) | 2015-12-02 |
| CN105108655B true CN105108655B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510537001.4A Active CN105108655B (en) | 2015-08-27 | 2015-08-27 | A kind of supertension abradant jet down-hole cutting implement |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119083B (en) * | 2018-02-11 | 2023-08-08 | 盘锦勇盛利石油科技开发有限公司 | Hydraulic drive well head oil pipe cutting knife |
| CN108393810B (en) * | 2018-03-06 | 2020-12-29 | 北京石油化工学院 | Water jet cutter underwater cutting device capable of being monitored |
| CN110000710A (en) * | 2019-04-16 | 2019-07-12 | 中石化石油工程技术服务有限公司 | A kind of toggle tension type high -pressure water cutting executing agency |
| CN114370247A (en) * | 2021-11-30 | 2022-04-19 | 中海油能源发展股份有限公司 | Remain well head abrasive material efflux cutting appurtenance under water |
| CN114482895B (en) * | 2022-01-14 | 2023-05-26 | 中国石油大学(华东) | Ultrahigh-pressure abrasive jet cutting system and method for abandoned shaft of offshore oil production platform |
| CN114427367B (en) * | 2022-01-14 | 2023-06-23 | 中国石油大学(华东) | High-pressure abrasive jet cutting system and method in abandoned shaft of offshore oil production platform |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08187664A (en) * | 1994-11-04 | 1996-07-23 | Konoike Constr Ltd | Method and device for cut crushing of structure by water jet |
| RU2137915C1 (en) * | 1998-12-07 | 1999-09-20 | Андреев Владимир Кириллович | Device for perforation of cased well |
| CN2387264Y (en) * | 1999-04-16 | 2000-07-12 | 大庆石油管理局采油工艺研究所 | Water power cutting off tool |
| CN2580110Y (en) * | 2002-10-17 | 2003-10-15 | 石油大学(华东) | Underwell deep penetration perforation device of abrasive jet flow |
| CN100366388C (en) * | 2005-06-06 | 2008-02-06 | 中国海洋石油总公司 | Hydraulic spinning type controllable abrasive material jet cutting apparatus and operating method thereof |
| CN100387803C (en) * | 2005-06-08 | 2008-05-14 | 阮花 | Down-hole multiple radialized holes ultra-deep boring device by abrasive water jet |
| CN103334723B (en) * | 2013-07-09 | 2015-10-14 | 重庆大学 | A kind of underground coal mine waterpower slot self-suction abrasive jet flow generating means and method |
-
2015
- 2015-08-27 CN CN201510537001.4A patent/CN105108655B/en active Active
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC Energy Development Co., Ltd. Patentee before: China National Offshore Oil Corporation |