CN207017987U - Downhole orientation hydrajet tool - Google Patents
Downhole orientation hydrajet tool Download PDFInfo
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- CN207017987U CN207017987U CN201720561662.5U CN201720561662U CN207017987U CN 207017987 U CN207017987 U CN 207017987U CN 201720561662 U CN201720561662 U CN 201720561662U CN 207017987 U CN207017987 U CN 207017987U
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Abstract
The utility model discloses a kind of downhole orientation hydrajet tool, including control device, drive device and spray gun, control device, drive device and spray gun are sequentially connected；Control device includes control chamber body, signal receiver, control board and down-hole battery group, signal receiver, control board and down-hole battery group are arranged on control chamber body, signal receiver is connected with control board, control board electrically connects with drive device, control board is connected with gravity accelerometer, and down-hole battery group is connected with signal receiver, control board and drive device respectively；Drive device includes motor, and spray gun is fixedly connected with the rotor of motor.The utility model can carry out the regulation of spray-hole orientation, can effectively prevent underground to be hampered and the influence that brings of spray gun vibration, can be reliably completed the task of vectored injection, the interference that rotational band is come during the instrument of avoiding is gone into the well.
Description
Technical field
A kind of downhole orientation hydrajet tool for fracture acidizing transformation is the utility model is related to, is stored up for horizontal well
Layer transformation, the completion transformation field belonged to used in oil exploitation.
Background technology
The reservoir bottom in Some Domestic oil field is with the presence of the more sufficient water body of energy.In horizontal well reservoir reconstruction,
How while effective pressure break reservoir bottom water is not linked up, be an importance in process choice and FRACTURING DESIGN.If
Using in reservoir drilled in middle horizontal hole, usual manner abrasive perforating, then in order to avoid communication bottom water, it is necessary to strict limitation seam
Height, reservoir reconstruction effect is have impact on, and the later stage is difficult to refracturing, limits the extraction of reservoir remaining oil.If it can lead to
Cross orient upward hydraulic jet perforation method carry out perforation, then can effectively guiding crack upwardly extend, transform non-principal stress
Reservoir Body on direction, bottom water body is avoided, improve reservoir reconstruction and build yield.
Address that need, some companies increase the side of spraycan part weight using eccentric structure both at home and abroad at present
Formula, by instrument it is circumferential by gravity is uneven and the mode of self-control attempts to realize vectored injection.For example, Chinese patent is public
A kind of automatic orientation hydraulic jetting fracturing instrument for fractured horizontal well disclosed in the number of opening CN104912534A, publication date are
On 09 16th, 2015, its top connection lower end was connected with the tool outer casing；It is provided with the left of tool outer casing internal boss partially
Intracardiac body；Use and be threadedly coupled between eccentric interior tube body and eccentric rotary spray gun；Set and stop among boss and eccentric interior tube body
Thrust bearing；Eccentric rotary spray gun is provided with the right side of boss inside tool outer casing；Set between eccentric rotary spray gun and tool outer casing
Put journal bearing；Position on eccentric rotary spray gun close to right part is provided with hole, and nozzle is placed in the hole；Lower contact is placed in partially
The right part of heart rotary spray gun；Lower contact is used to connect other facilities.By making the spray gun of eccentrically mounted weight freely turn in shell
It is dynamic, realize waterpower spray gun all the time in the horizontal direction.
But above-mentioned prior art is because card is easily met in underground, and vibration is big during injection, causes spraycan not to be rotated in place
Or sprayed for a bit, thus jeting effect is had influence on, construction requirement can not be met.And waterpower spray both at home and abroad at present
The spray-hole for penetrating instrument is arranged circumferentially along spray gun, can only realize the uniform transformation to reservoir near spray-hole；Even if only
Spray-hole is arranged in spray gun side, but due to not possessing underground accurate pointing ability, can not also realize wanting for downhole orientation injection
Ask.Therefore, so far, it can be realized without a kind of effective manner both at home and abroad and be reliably orientated injection.
The content of the invention
The purpose of this utility model is to overcome above mentioned problem existing for prior art, there is provided one kind changes for fracture acidizing
The downhole orientation hydrajet tool made.The utility model can carry out the regulation of spray-hole orientation, effectively can prevent underground from meeting
The influence that resistance and spray gun vibration are brought, can be reliably completed the task of vectored injection, and can also realize ground remote control,
Greatly simplified operating process, the interference that rotational band is come during the instrument of it also avoid is gone into the well.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of downhole orientation hydrajet tool, it is characterised in that：Including control device, drive device and spray gun, control
Device, drive device and spray gun are sequentially connected；Control device includes control chamber body, signal receiver, control board and well
Lower battery pack, signal receiver, control board and down-hole battery group are arranged on control chamber body, signal receiver and control
Circuit board connection processed, control board electrically connect with drive device, and control board is connected with gravity accelerometer, underground
Battery pack is connected with signal receiver, control board and drive device respectively；Drive device includes motor, motor
It is sealedly and fixedly connected with control chamber body；Spray gun is fixedly connected with the rotor of motor.
Control chamber is provided with the control chamber body outer wall, signal receiver, control board and down-hole battery group are set
Put in control chamber, the control chamber enclosure being sealedly and fixedly connected with control chamber is provided with control chamber.
The motor includes motor housing, motor stator and rotor, and motor stator is arranged in motor housing,
And be sealedly and fixedly connected with control chamber body, rotor top is located in motor stator, and lower end passes motor housing and spray gun
It is fixedly connected.
Rotor cutting ferrule is arranged with the rotor, rotor cutting ferrule is fixed in motor housing by the bearing of setting,
Coil is provided between rotor cutting ferrule and motor housing.
The control chamber body is provided with end cover with motor stator fixed connection place, and end cover is close with motor stator
Envelope is fixedly connected.
The rotor bottom coordinates with motor housing rotatory sealing.
The gravity accelerometer integrated form is arranged in control board.
The gravity accelerometer is arranged on motor stator.
The control board is connected with motor by electric connector.
A row or multi-row spray-hole is provided with the spray gun, and often arranges spray-hole and is arranged along spray gun axial orientation, is more
When arranging spray-hole, it is evenly distributed on spray gun.
The spray-hole is arranged to counterclockwise as just relative to gravity accelerometer in the circumferential direction of spray gun
Or it is negative.
Using the utility model has the advantage of：
1st, the utility model can realize along in circumferentially any orientation of well automatic and accurate position, and along well circumferentially appoint
One orientation is oriented injection, can on automatic identification spray gun spray-hole in the circumferential orientation of well residing for underground；Can be automatic
Spray-hole is in the circumferential orientation of well residing for underground on adjustment spray gun；Can the action of ground remote control, avoid because going into the well process
In because the rotation of tubing string itself stress causes the malfunction of downhole jetting tool.
2nd, the utility model carries out the regulation of spray-hole orientation by the way of motor drives spray gun rotation, because of driving electricity
The characteristics of machine has that moment of torsion is big, and rotation is immovable after stopping, it can effectively prevent that underground is hampered the shadow brought with spray gun vibration
Ring, the task of vectored injection can be reliably completed.And be driven by motor, it can also realize that ground is remotely controlled
System, greatly simplified operating process, the interference that rotational band is come during the instrument of it also avoid is gone into the well.
3rd, the utility model is simple to operate, easy to use, can be oriented injection for reservoir particular orientation in underground,
Solve the problems, such as that some oil gas fields cause reservoir reconstruction limited due to bottom water.
To sum up, using downhole orientation hydrajet tool, can realize the automatic circumferentially positioned of spray-hole on spray gun and from
The purpose in dynamic adjustment spray-hole circumference orientation, solve the problems, such as how accurately, reliably to realize that downhole orientation sprays.Pin
To the block that some have bottom water or need refracturing, the risk of pressure leak layer can be greatly reduced and effectively improve repetition
Reservoir reconstruction volume during transformation.
Brief description of the drawings
Fig. 1 is the downhole tool pipe string schematic diagram of downhole orientation hydrajet tool；
Fig. 2 is three kinds of lance ejection pore size distribution expanded schematic diagrams；
Fig. 3 is downhole orientation hydrajet tool structural representation；
Fig. 4 is spray-hole and gravity accelerometer along spray gun circumference angle expanded schematic diagram.
In figure mark for：1st, chamber enclosure is controlled；2nd, signal receiver；3rd, control board；4th, electric connector；5th, control chamber
Body；6th, down-hole battery group；7th, sealing ring；8th, motor housing；9th, bearing；10th, coil；11st, gravity accelerometer；12、
End cover；13rd, motor stator；14th, rotor cutting ferrule；15th, rotor；16th, spray gun；17th, spray-hole；18th, oil pipe or continuous
Oil pipe.
Embodiment
Embodiment 1
A kind of downhole orientation hydrajet tool, including control device, drive device and spray gun 16, control device, driving
Device and spray gun 16 are sequentially connected；Control device includes control chamber body 5, signal receiver 2, control board 3 and underground electricity
Pond group 6, signal receiver 2, control board 3 and down-hole battery group 6 are arranged on control chamber body 5, signal receiver 2 with
Control board 3 connects, and control board 3 electrically connects with drive device, and control board 3 is connected with gravity accelerometer
11, down-hole battery group 6 is connected with signal receiver 2, control board 3 and drive device respectively；Drive device includes driving electricity
Machine, motor are sealedly and fixedly connected with control chamber body 5；Spray gun 16 is fixedly connected with the rotor 15 of motor.
Control chamber, signal receiver 2, control board 3 and down-hole battery group are provided with the outer wall of control chamber body 5
6 are arranged in control chamber, and the control chamber enclosure 1 being sealedly and fixedly connected with control chamber is provided with control chamber.
The motor includes motor housing 8, motor stator 13 and rotor 15, and motor stator 13 is arranged on motor
In shell 8, and it is sealedly and fixedly connected with control chamber body 5, the top of rotor 15 is located in motor stator 13, and lower end passes electricity
Machine shell 8 is fixedly connected with spray gun 16.
Rotor cutting ferrule 14 is arranged with the rotor 15, rotor cutting ferrule 14 is fixed on motor by the bearing 9 of setting
In shell 8, coil 10 is provided between rotor cutting ferrule 14 and motor housing 8.
The control chamber body 5 is provided with end cover 12, end cover 12 and electricity with the fixed connection place of motor stator 13
Machine stator 13 is sealedly and fixedly connected.
The bottom of rotor 15 coordinates with the rotatory sealing of motor housing 8.
The integrated form of gravity accelerometer 11 is arranged in control board 3.Or the acceleration of gravity passes
Sensor 11 is arranged on motor stator 13.
The control board 3 and motor are connected by electric connector 4.
A row or multi-row spray-hole 17 is provided with the spray gun 16, and often arranges spray-hole 17 and is arranged along the axial orientation of spray gun 16
Row, when being multiple rows of spray-hole 17, are evenly distributed on spray gun 16.
The spray-hole 17 is arranged to side counterclockwise relative to gravity accelerometer 11 in the circumferential direction of spray gun 16
Xiang Weizheng is negative.
The application method of downhole orientation hydrajet tool is illustrated below, comprised the following steps：
A, after downhole orientation spraycan reaches injection well depth position, controlled by ground and start downhole orientation injection work
Tool；
B, after downhole orientation spraycan starts, identification spray-hole 17 is along well circumference orientation, when it is determined that spray-hole 17 exists
Behind the initial circumferential orientation of underground, it is analyzed with the final injection orientation set, obtaining spray gun 16 needs what is rotated
Direction and angle；
C, the direction as required of spray gun 16 and angle is controlled to be rotated, adjustment spray-hole 17 is along the circumferential orientation of well
To specified orientation；
D, after spray-hole 17 is adjusted in place on spray gun 16, start to orient abrasive perforating, and carry out fracture acidizing construction.
In the step a, ground control mode includes transmitting electromagnetic wave, ground produces pressure wave or throws RFID to underground
Control ball etc..
In the step b, after downhole orientation spraycan receives the startup order of ground transmission, downhole gravity accelerates
The well circumference orientation residing for the detection sensor itself of sensor 11 is spent, and testing result is sent to control board 3, is controlled
After circuit board 3 receives measurement result, with the angle between the downhole gravity acceleration transducer 11 and spray-hole 17 that set
Value, circumferential orientation values to be sprayed carry out comparing calculation, obtain direction and angle that spray-hole 17 needs to adjust, and obtain underground weight
Power acceleration transducer 11 finally needs the well circumference orientation being in.
In the step b, if the adjustment angle numerical value that control board 3 is calculated is equal to or less than tolerance
Value, then motor need not act；If the adjustment angle numerical value being calculated is higher than tolerance value, control driving electricity
Motor-driven work.
In the step c, control board 3 sends control command to motor, and motor rotor 15 is to designated parties
The angle specified to rotation.
In the step c, after the completion of rotor 15 rotates, the detection sensor again of downhole gravity acceleration transducer 11
Well circumference orientation residing for itself, if the actually located well circumference orientation of gravity accelerometer 11 and control electricity before
The downhole gravity acceleration transducer 11 that road plate 3 is calculated finally needs the well circumference orientation that is in consistent, then shows electricity
Machine rotor 15 is rotated in place, and control terminates；If it is inconsistent, it is not in place to show that rotor 15 rotates, then control board 3
Direction and angle that spray-hole 17 needs to adjust are recalculated, and continues controlled motor rotor 15 and rotates, until being rotated in place.
In the present embodiment, various sealings coordinate to be realized by sealing ring 7.
Embodiment 2
The present embodiment combination accompanying drawing is described further to the utility model.Here, of the present utility model schematically implement
Mode and its illustrate to be used to explain the utility model, but be not intended as to restriction of the present utility model.
As illustrated, the utility model is broadly divided into ground control and underground performs two parts.Ground control segment is main
Sent to underground and start order, it is ensured that instrument is just started working when needing, and can farthest save battery electric quantity；
Underground part is downhole orientation spraycan, mainly realizes being automatically positioned and circumferentially being adjusted along well for the nozzle of spray gun 16.
Fig. 1 is the downhole tool pipe string schematic diagram for the orientation hydrajet tool of fracture acidizing transformation.Downhole orientation
Spraycan is made up of control device, drive device and the three parts of spray gun 16, and each several part is connected by tubing round thread.Downhole orientation
Spraycan is connected with oil pipe or coiled tubing 18, in oil pipe or the bottom of coiled tubing 18.
If Fig. 2 is a kind of spray gun spray of orientation hydrajet tool transformed for fracture acidizing described in the utility model
Perforation distribution schematic diagram（Expanded view）.Spray-hole is often arranged on spray gun 16 axially to arrange along spray gun.Designed or stored up based on spray gun structure
Layer transformation needs, and can set 1 row, 2 rows or 3 row's spray-holes 17, shown in Fig. 2, dotted line is spray gun axial direction in figure.
If Fig. 3 is a kind of orientation hydrajet tool structural representation transformed for fracture acidizing described in the utility model
Figure.After signal receiver 2 receives the start command signal of ground transmission, control board 3, control electricity are transmitted the signal to
After road plate 3 identifies enabled instruction, normal operating conditions is adjusted to from holding state, at this moment, downhole gravity acceleration transducer
11 start to detect the well circumference orientation residing for itself, and testing result is sent to control board 3, control board 3 and led to
Cross comparing calculation, determine that motor needs the direction that rotates and angle, then motor rotor 15 rotates, rotor 15 with
Spray gun 16 is connected through a screw thread, therefore spray gun 16 rotates equidirectional and angle with rotor 15.The well of spray-hole 17 is circumferential
After the completion of orientation adjustment, downhole gravity acceleration transducer 11 detects the well circumference orientation residing for itself again, if detection
Orientation with it is expected that orientation is identical, then it is assumed that the angle adjustment of spray gun 16 terminates；If detect orientation from it is expected that orientation is different, then it is assumed that
The angle adjustment of spray gun 16 is not in place, and control board 3 may proceed to be presently in circumferential orientation according to spray-hole 17 to be adjusted, directly
To 17 circumferential orientation adjustment of spray-hole in place.
Control board 3 is in holding state in general, and in holding state, only signal receiving function is being just
Often work, after startup order is received, control board 3 just can be converted to normal operating conditions from holding state.Normal
During working condition, if in place, control board 3 can be automatically converted to holding state to the angle adjustment of spray-hole 17 on spray gun 16.
It so can effectively extend the working time of underground location spraycan.
Downhole gravity acceleration transducer 11 is integrated in control board 3.Motor uses direct current torque motor.
If Fig. 4 is a kind of orientation hydrajet tool lance ejection transformed for fracture acidizing described in the utility model
Hole 17 and downhole gravity acceleration transducer 11 are along spray gun circumference angle schematic diagram（Expanded view）.It is first after the completion of ground-mounted
First to measure angle in spray gun circumferential direction of spray-hole 17 and downhole gravity acceleration transducer 11, determine the phase of spray-hole 17
For downhole gravity acceleration transducer 11 in the circumferential direction of spray gun（Counter clockwise direction is arranged to be just or be negative）, and
Angle and directioin parameter, and the circumferential orientation angular dimensions that underground needs to spray are arranged in control board 3 in advance, for meter
Calculate the motor anglec of rotation and direction provides foundation.
After downhole orientation spraycan receives the startup order of ground transmission, downhole control is started working, well
Well circumference orientation of the lower gravity accelerometer 11 first residing for detection sensor itself, and testing result is sent to well
Lower control device, after downhole control receives measurement result, with the downhole gravity acceleration transducer 11 that is previously entered with
Angle value, circumferential orientation values to be sprayed between lance ejection hole 17 carry out comparing calculation, and obtaining lance ejection hole 17 needs to adjust
Whole direction and angle, and obtain the well circumference orientation that downhole gravity acceleration transducer 11 finally needs to be in.If meter
Obtained adjustment angle numerical value is equal to or less than tolerance value, then motor need not act；If it is calculated
Adjustment angle numerical value is higher than tolerance value, then motor acts；If motor needs to act, controlled and filled by underground
Put to motor and send control command, the angle that motor rotor 15 is specified to assigned direction rotation；Rotor 15 revolves
After the completion of turning, the well circumference orientation residing for detection sensor itself again of downhole gravity acceleration transducer 11, if sensing
The downhole gravity acceleration transducer 11 that the actually located well circumference orientation of device is calculated with control device before finally needs
The well circumference orientation being in is consistent, then shows that the rotation of rotor 15 causes, control terminates；If the actually located well of sensor
The eye circumference downhole gravity acceleration transducer 11 that downhole control is calculated to orientation and before finally needs the well being in
Eye circumference is inconsistent to orientation, then it is not in place to show that rotor 15 rotates, then downhole control can recalculate lance ejection
Hole 17 needs direction and the angle adjusted, and continues controlled motor rotor 15 and rotate, until being rotated in place.
Embodiment 3
After it is determined that reservoir needs the well circumference orientation sprayed, inputted in advance to downhole orientation spraycan on the ground
Spray bearing data（I.e. finally well circumferentially sprays orientation to spray-hole corresponding to needs）, set the side that underground needs to spray
To.When needing construction, downhole orientation spraycan is connected with oil pipe or coiled tubing 18, is sent into underground.Work as downhole orientation
After spraycan reaches injection well depth position, ground control instruction is sent to open by way of throwing RFID communication ball into oil pipe
Dynamic downhole orientation spraycan, when RFID communication ball with downhole fluid by downhole orientation spraycan when, downhole orientation injection
RFID reader built in instrument receives control signal, and starts control program, and downhole gravity acceleration transducer 11 starts
Automatic identification spray-hole 17 is along well circumference orientation, when it is determined that behind initial circumferential orientation of the spray-hole 17 in underground, with setting
Final injection orientation be analyzed, obtaining spray gun needs the direction that rotates and angle；Afterwards, control device controls rotation
System order is sent to motor, and control motor direction as required and angle are rotated, and are adjusted and are sprayed on spray gun
Orientation to specified orientation of the hole 17 along well circumference.
Downhole gravity acceleration transducer 11 is arranged on motor stator 13.Control device, drive device and spray gun are on ground
Face is sequentially connected by screw thread, and spray gun is connected on motor rotor.After the completion of connection, downhole gravity acceleration is measured first and is passed
Spray-hole 17 is along instrument circumference angle and relative direction on sensor 11 and spray gun, and by control board under metrical information input well
3。
RFID communication ball uses high temperature resistant RFID chip, and chip is fixed on high polymer material and is made in spheroid；On ground
In advance to RFID chip write control information.
Embodiment 4
After downhole orientation spraycan reaches injection well depth position, ground control is sent by electromagnetic communication mode and referred to
Make to start downhole orientation spraycan, after downhole orientation spraycan receives control signal startup, downhole gravity acceleration
Sensor 11 starts automatic identification spray-hole 17 along well circumference orientation, when it is determined that spray-hole 17 in the initial circumferential orientation of underground
Afterwards, it is analyzed with the final injection orientation set, obtains direction and angle that spray gun needs to rotate；Afterwards, control
Device sends rotation control command to motor, and the direction as required of controlled motor rotor 15 and angle are rotated,
Adjust orientation to specified orientation of the spray-hole 17 along well circumference on spray gun.
Embodiment 5
After downhole orientation spraycan reaches injection well depth position, ground is sent by geostatic pressure wave communication mode and controlled
System is instructed to start downhole orientation spraycan, and the pressure sensor built in downhole orientation spraycan receives control signal and opened
After dynamic, downhole gravity acceleration transducer 11 starts automatic identification spray-hole 17 along well circumference orientation, when it is determined that spray-hole 17
Behind the initial circumferential orientation of underground, it is analyzed with the final injection orientation set, obtaining spray gun needs what is rotated
Direction and angle；Afterwards, control device sends rotation control command to motor, and controlled motor rotor 15 is as required
Direction and angle are rotated, and adjust orientation to specified orientation of the spray-hole 17 along well circumference on spray gun.
After spray-hole 17 is adjusted in place on spray gun, then start to orient abrasive perforating, and carry out fracture acidizing construction.Complete
After construction, oil pipe or coiled tubing 18 drag downhole jetting tool to next spray site position, the operation of next section of progress.
Claims (9)
- A kind of 1. downhole orientation hydrajet tool, it is characterised in that：Including control device, drive device and spray gun（16）, control Device, drive device and spray gun processed（16）It is sequentially connected；Control device includes control chamber body（5）, signal receiver（2）, control Circuit board processed（3）With down-hole battery group（6）, signal receiver（2）, control board（3）With down-hole battery group（6）It is arranged at Control chamber body（5）On, signal receiver（2）With control board（3）Connection, control board（3）It is electrically connected with drive device Connect, control board（3）It is connected with gravity accelerometer（11）, down-hole battery group（6）Respectively with signal receiver（2）、 Control board（3）Connected with drive device；Drive device includes motor, motor and control chamber body（5）Sealing It is fixedly connected；Spray gun（16）With the rotor of motor（15）It is fixedly connected.
- 2. downhole orientation hydrajet tool according to claim 1, it is characterised in that：The control chamber body（5）Outside Control chamber, signal receiver are provided with wall（2）, control board（3）With down-hole battery group（6）It is arranged in control chamber, controls The control chamber enclosure being sealedly and fixedly connected with control chamber is provided with chamber processed（1）.
- 3. downhole orientation hydrajet tool according to claim 2, it is characterised in that：The motor includes motor Shell（8）, motor stator（13）And rotor（15）, motor stator（13）It is arranged on motor housing（8）It is interior, and and control chamber Body（5）It is sealedly and fixedly connected, rotor（15）Top is located at motor stator（13）Interior, lower end passes motor housing（8）With Spray gun（16）It is fixedly connected.
- 4. downhole orientation hydrajet tool according to claim 3, it is characterised in that：The rotor（15）Upper set Provided with rotor cutting ferrule（14）, rotor cutting ferrule（14）Motor housing is fixed on by the bearing of setting（8）It is interior, rotor cutting ferrule（14）With Motor housing（8）Between be provided with coil.
- 5. downhole orientation hydrajet tool according to claim 4, it is characterised in that：The control chamber body（5）With Motor stator（13）Fixed connection place is provided with end cover（12）, end cover（12）With motor stator（13）Sealing is fixed to be connected Connect.
- 6. downhole orientation hydrajet tool according to claim 5, it is characterised in that：The rotor（15）Bottom With motor housing（8）Rotatory sealing coordinates.
- 7. downhole orientation hydrajet tool according to claim 6, it is characterised in that：The gravity accelerometer （11）Integrated form is arranged on control board（3）On.
- 8. downhole orientation hydrajet tool according to claim 6, it is characterised in that：The gravity accelerometer （11）It is arranged on motor stator（13）On.
- 9. the downhole orientation hydrajet tool according to claim 7 or 8, it is characterised in that：The control board（3） Pass through electric connector with motor（4）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720561662.5U CN207017987U (en) | 2017-05-19 | 2017-05-19 | Downhole orientation hydrajet tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720561662.5U CN207017987U (en) | 2017-05-19 | 2017-05-19 | Downhole orientation hydrajet tool |
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| Publication Number | Publication Date |
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| CN207017987U true CN207017987U (en) | 2018-02-16 |
Family
ID=61475486
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| CN201720561662.5U Active CN207017987U (en) | 2017-05-19 | 2017-05-19 | Downhole orientation hydrajet tool |
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| CN (1) | CN207017987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206909A (en) * | 2020-01-15 | 2020-05-29 | 闫大丰 | Hydraulic jet staged fracturing tool |
-
2017
- 2017-05-19 CN CN201720561662.5U patent/CN207017987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206909A (en) * | 2020-01-15 | 2020-05-29 | 闫大丰 | Hydraulic jet staged fracturing tool |
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Effective date of registration: 20200921 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |