CN114508520A - Director hydraulic integrated system for coiled tubing - Google Patents
Director hydraulic integrated system for coiled tubing Download PDFInfo
- Publication number
- CN114508520A CN114508520A CN202011277798.6A CN202011277798A CN114508520A CN 114508520 A CN114508520 A CN 114508520A CN 202011277798 A CN202011277798 A CN 202011277798A CN 114508520 A CN114508520 A CN 114508520A
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- hydraulic
- cavity
- director
- hydraulic pump
- driving motor
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- 239000003921 oil Substances 0.000 claims description 44
- 239000010720 hydraulic oil Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 24
- 230000010354 integration Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 235000012771 pancakes Nutrition 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
Abstract
The invention provides a director hydraulic integrated system for a coiled tubing, comprising: the hydraulic shell is internally provided with a first cavity and a second cavity; the driving device is arranged in the first cavity and comprises a driving motor and a hydraulic pump connected with the output end of the driving motor, and the hydraulic pump is positioned on the axial inner side of the driving motor; the piston rod is arranged in the second cavity and divides an upper piston cavity and a lower piston cavity in the second cavity; the underground electric control device is electrically connected with the driving motor; the side wall area of the hydraulic shell is provided with a first flow passage hole and a second flow passage hole which extend along the axial direction, two ends of the first flow passage hole are respectively communicated with the hydraulic pump and the upper piston cavity, two ends of the second flow passage hole are respectively communicated with the hydraulic pump and the lower piston cavity, and the driving motor can receive a control signal sent by the underground electric control device and drive the hydraulic pump to rotate forwards or reversely so as to control the piston rod to reciprocate.
Description
Technical Field
The invention belongs to the technical field of coiled tubing drilling underground control, and particularly relates to a hydraulic integrated system of a direction finder for a coiled tubing.
Background
In the process of adopting the coiled tubing directional drilling, the coiled tubing and the bottom hole assembly cannot rotate due to the limitation of a wellhead coiled tubing feeding device, so that a coiled tubing directional tool must be added into the bottom hole assembly to realize the coiled tubing directional drilling. The directional tool is the core tool of coiled tubing directional drilling, and the coiled tubing directional tool determines the technical level of trajectory control in the process of coiled tubing directional drilling.
At present, the direction finder developed at home and abroad drives a multi-base hydraulic system, and the hydraulic system is mainly controlled by electronic signals to output thrust so as to drive the mechanical part of the direction finder to rotate, thereby completing the adjustment of the underground tool surface. However, due to the small internal space of the direction finder, the high output torque requirement and the harsh external working environment, the miniaturization, the high thrust and the high reliability of the hydraulic system are strictly required.
The coiled tubing drilling tool electric hydraulic control system in the prior art usually adopts electromagnetic valves, reversing valves and the like to control the state of an oil way and realize the switching of the hydraulic oil way, but the hydraulic systems are complex, have more components, low integration level and large occupied space, have certain influence on the design size of the whole tool and have higher probability of failure of the excessive hydraulic components. In addition, the hydraulic system is always in a high-pressure state during working, hydraulic oil leakage is easily caused, and the working reliability of the hydraulic system is seriously influenced and the system maintenance period is shortened due to the fact that the conventional continuous pipe orientation tool cannot be compensated in time.
Disclosure of Invention
In view of the above technical problems, the present invention aims to provide a hydraulic integrated system for a direction finder of a coiled tubing, which has high integration level, can effectively reduce the complexity and failure rate of the system, can dynamically compensate oil leakage of the system in a high-pressure working environment, balances the pressure in the system, and is very favorable for enhancing the reliability of the system in downhole work.
To this end, according to the invention, there is provided an integrated hydraulic system of orienters for coiled tubing, comprising: the hydraulic pump comprises a hydraulic shell, a first cavity and a second cavity, wherein the first cavity and the second cavity are axially spaced from each other; the driving device is arranged in the first cavity and comprises a driving motor and a hydraulic pump connected with the output end of the driving motor, and the hydraulic pump is positioned on the axial inner side of the driving motor; a piston rod disposed within the second chamber, the piston rod separating an upper piston chamber and a lower piston chamber within the second chamber; the underground electric control device is electrically connected with the driving motor; the side wall area of the hydraulic shell is provided with a first flow passage hole and a second flow passage hole which are circumferentially spaced from each other and axially extend, two ends of the first flow passage hole are respectively communicated with an internal oil passage of the hydraulic pump and the upper piston cavity, two ends of the second flow passage hole are respectively communicated with the internal oil passage of the hydraulic pump and the lower piston cavity, and the driving motor can receive a control signal sent by the underground electric control device and drive the hydraulic pump to rotate forwards or backwards, so that the hydraulic pump correspondingly pumps hydraulic oil into the upper piston cavity or the lower piston cavity, and the piston rod is controlled to reciprocate.
In one embodiment, the first and second channel openings are respectively arranged in radially symmetrical side wall regions of the hydraulic housing.
In one embodiment, the hydraulic integrated system further comprises an oil compensating device, and the oil compensating device can balance pressure in the hydraulic integrated system of the direction finder.
In one embodiment, the oil compensating device is disposed in the first cavity and connected to a lower end of the hydraulic pump, and hydraulic oil is stored in the oil compensating device.
In one embodiment, an electric control joint is arranged at the end part of the first cavity, one end of the electric control joint is connected with the driving motor, and the other end of the electric control joint is connected with the downhole electric control device.
In one embodiment, a first sealing seat is fixed at the end of the first cavity, and the electric control joint penetrates through the first sealing seat and is connected with the driving motor and the downhole electric control device respectively.
In one embodiment, a second sealing seat is fixed at the end of the second cavity, the piston rod axially passes through the second sealing seat and partially extends out of the piston rod.
In one embodiment, the piston rod is in dynamic sealing connection with the second sealing seat.
In one embodiment, the hydraulic pump is connected to the output of the drive motor by a coupling.
In one embodiment, the axially outer end of the piston rod is configured as a connection sub for connecting a lower mechanical drill.
Compared with the prior art, the method has the advantages that:
according to the hydraulic integrated system of the orientator for the continuous tube, the hydraulic driving mechanism part and the reversing mechanism part are integrated into a whole, so that the integration level is improved, the occupied space of the hydraulic integrated system of the orientator is greatly reduced, and the complexity and the failure rate of the hydraulic integrated system of the orientator are obviously reduced. Meanwhile, the hydraulic integrated system of the orientator can supplement hydraulic oil inside the orientator in time through the oil compensation device, so that oil leakage of the hydraulic integrated system of the orientator of the dynamic compensation system in a high-pressure working state is effectively compensated, the pressure in the system is effectively balanced, the underground working reliability of the hydraulic integrated system of the orientator is greatly improved, and the maintenance period of the hydraulic integrated system of the orientator is prolonged.
Drawings
The invention will now be described with reference to the accompanying drawings.
Fig. 1 shows the structure of an integrated hydraulic system of an orienter for coiled tubing according to the present invention.
Fig. 2 shows the fully extended state of the piston rod in the integrated hydraulic system of the orienter shown in fig. 1.
Fig. 3 shows the fully retracted state of the piston rod in the integrated hydraulic system of the direction finder shown in fig. 1.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
In this application it is to be noted that the end of the director hydraulic integration system for coiled tubing according to the invention lowered into the wellbore close to the wellhead is defined as the upper end or similar and the end remote from the wellhead is defined as the lower end or similar.
FIG. 1 shows the structure of an integrated orienter hydraulic system 100 for coiled tubing according to the present invention. As shown in fig. 1, the integrated hydraulic director system 100 includes a hydraulic housing 1. The hydraulic housing 1 is configured to be cylindrical, a first cavity 11 and a second cavity 12 are arranged inside the hydraulic housing 1, and the first cavity 11 and the second cavity 12 are axially spaced from each other and are not communicated. The first chamber 11 is configured to extend axially inward from an upper end surface (left end in fig. 1) of the hydraulic housing 1, and the second chamber 12 is configured to extend axially inward from a lower end surface (right end in fig. 1) of the hydraulic housing 1, so that a partition is formed in the middle of the hydraulic housing 1, with the first chamber 11 and the second chamber 12 being located on both axial sides of the partition, respectively.
According to the invention, a first sealing seat 61 is arranged at the upper end of the hydraulic shell 1, and the first sealing seat 61 is fixedly connected with the upper end of the hydraulic shell 1, so that the first cavity 11 forms a sealed cavity. Meanwhile, a second sealing seat 62 is arranged at the lower end of the hydraulic housing 1, and the second sealing seat 62 is fixedly connected with the lower end of the hydraulic housing 1, so that the second cavity 12 forms a sealed cavity.
In one embodiment, the upper end and the lower end of the hydraulic housing 1 are respectively configured as a positive tapered connection buckle and a negative tapered connection buckle, the first sealing seat 61 and the second sealing seat 62 are correspondingly configured as a negative tapered connection buckle and a positive tapered connection buckle, and the first sealing seat 61 and the second sealing seat 62 are connected with the two ends of the hydraulic housing 1 in an adaptive manner through the corresponding tapered connection buckles. Preferably, a plurality of sealing elements are respectively arranged between the connection surfaces of the first sealing seat 61, the second sealing seat 62 and the hydraulic housing 1, so as to form a fixed sealing connection.
According to the invention, a drive is provided in the first chamber 11. As shown in fig. 1, the driving apparatus includes a driving motor 21 and a hydraulic pump 22 connected to an output end of the driving motor 21, and the hydraulic pump 22 is disposed axially inside the driving motor 21. In one embodiment, the output end of the driving motor 21 is provided with a coupling 23, and the hydraulic pump 22 is connected with the driving motor through the coupling 23. The drive motor 21 can drive the hydraulic pump 22 to rotate in the forward direction or in the reverse direction.
The integrated hydraulic director system 100 further comprises downhole electronic control means (not shown) arranged outside the hydraulic housing 1. The downhole electric control device is connected with the driving device and used for sending control signals to control the driving device to operate. In one embodiment, an electric control joint 5 is arranged at the end of the first cavity 11, the electric control joint 5 penetrates through the first sealing seat 61, and one end of the electric control joint 5 is connected with the driving motor 21, and the other end is connected with a downhole electric control device. The downhole electronic control device transmits a control command to the driving motor 21 through the electronic control joint 5, so that the driving motor 21 controls the hydraulic pump 22 to work according to the control command.
As shown in fig. 1, a piston rod 3 is provided in the second chamber 12. The piston rod 3 comprises a rod-shaped body, on the outer circumference of which radial protrusions 30 are provided which extend radially outwards. The radially outer surface of the radial projection 30 forms a dynamic seal with the inner surface of the second cavity 12, such that the radial projection 30 separates an upper piston chamber 31 and a lower piston chamber 32 within the second cavity 12, the upper piston chamber 31 and the lower piston chamber 32 being located at an axially upper end and an axially lower end of the radial projection 30, respectively. Thus, the radial projection 30 serves as a piston, and upper and lower end surfaces thereof are formed as piston end surfaces for receiving hydraulic oil pressure.
The lower end of the piston rod 3 is configured as a connecting joint 33, the connecting joint 33 is used for connecting a lower mechanical drilling tool, and the orientator hydraulic integrated system 100 drives the lower mechanical drilling tool to move through the piston rod 3, so that the corresponding orientation requirement is realized.
According to the invention, in the side wall region of the hydraulic housing 1, a first channel bore 13 and a second channel bore 14 are provided, which are spaced apart from one another in the circumferential direction, and the first channel bore 13 and the second channel bore 14 are each arranged so as to extend in the axial direction. Preferably, the first and second flow channel openings 13, 14 are each arranged in a radially symmetrical side wall region of the hydraulic housing 1. It is of course understood that the first and second flow passage holes 13 and 14 may be arranged to be spaced apart in the circumferential direction instead of being arranged to be radially symmetrical, as long as two mutually independent flow passages can be formed. The upper end of the first flow passage hole 13 communicates with an internal oil passage of the hydraulic pump 22, and the lower end communicates with the upper piston chamber 31, thereby forming a first oil passage. The upper end of the second flow passage hole 14 communicates with the internal oil passage of the hydraulic pump 22, and the lower end communicates with the lower piston 32 chamber, thereby forming a second oil passage.
In the process that the driving motor 21 receives a control command sent by the downhole electric control device and controls the hydraulic pump 22, when the driving motor 21 drives the hydraulic pump 22 to rotate in the forward direction, the hydraulic pump 22 sucks hydraulic oil in the lower piston cavity 32 through the second oil path and pumps the hydraulic oil to the upper piston cavity 31 through the first oil path. As the hydraulic pump 22 continues to pump oil, the hydraulic oil in the upper piston chamber 31 generates high-pressure thrust on the upper end surface of the radial protrusion 30, thereby pushing the piston rod 3 to move downward until the piston rod 3 is fully extended. Fig. 2 shows the piston rod 3 in a fully extended state. When the driving motor 21 drives the hydraulic pump 22 to rotate reversely, the hydraulic pump 22 sucks the hydraulic oil in the upper piston chamber 31 through the first oil passage and pumps the hydraulic oil to the lower piston chamber 32 through the second oil passage. As the hydraulic pump 22 continues to pump oil, the hydraulic oil in the lower piston chamber 32 generates a high-pressure thrust on the lower end surface of the radial protrusion 30, thereby pushing the piston rod 3 to move upward until the piston rod 3 is completely retracted. Fig. 3 shows the piston rod 3 in a fully retracted state. Therefore, the reciprocating motion of the piston rod 3 is realized, so that the lower mechanical drilling tool is driven to move, and the corresponding directional requirement is realized.
According to the present invention, the integrated hydraulic system 100 of the direction finder further comprises an oil compensating device 4, wherein the oil compensating device 4 stores hydraulic oil. As shown in fig. 1, the oil compensating device 4 is disposed in the first chamber 11. The oil compensating device 4 is connected to a lower end of the hydraulic pump 22, and the oil compensating device 4 is communicated with an internal oil passage of the hydraulic pump 22. In one embodiment, the oil compensating device 4 can be, for example, a pancake. The hydraulic integrated system 100 of the director is in a high-pressure operation state in the working process, hydraulic oil leakage loss can exist in the operation process, and hydraulic oil in the hydraulic integrated system 100 of the dynamic compensation system can be supplemented in time through the oil compensation device 4, so that oil leakage of the hydraulic integrated system 100 of the director in the high-pressure operation state is compensated, the pressure in the system is effectively balanced, the underground working reliability of the hydraulic integrated system 100 of the director is greatly improved, and the maintenance period of the hydraulic integrated system 100 of the director is prolonged.
The operation of the integrated orienter hydraulic system 100 for coiled tubing according to the present invention is briefly described below. The integrated hydraulic director system 100 is first connected to the coiled tubing and the lower mechanical drill is connected to the connection nipple 33 at the lower end of the piston rod 3, whereby the coiled tubing is lowered into the wellbore together with the integrated hydraulic director system 100. In the drilling process, when the piston rod 3 needs to be extended out to drive the lower mechanical drilling tool to move downwards, the underground electric control device sends a forward rotation instruction and transmits the forward rotation instruction to the driving motor 21 through the electric control connector 5, the driving motor 21 controls the output shaft of the driving motor 21 to rotate forward after receiving the control instruction, so that the hydraulic pump 22 is driven to rotate forward through the coupler 23, the hydraulic oil in the lower piston cavity 32 is sucked by the hydraulic pump 22 through the second oil path, and the hydraulic oil is pumped to the upper piston cavity 31 through the first oil path. As the hydraulic pump 22 continues to pump oil, the hydraulic oil in the upper piston cavity 31 generates high-pressure thrust on the upper end surface of the radial protrusion 30, so as to push the piston rod 3 to move downward until the piston rod 3 is completely extended. When the piston rod 3 needs to be retracted to drive the lower mechanical drilling tool to move upwards, a reverse rotation instruction is sent by the underground electric control device and is transmitted to the driving motor 21 through the electric control connector 5, the driving motor 21 controls the output shaft of the driving motor 21 to rotate reversely after receiving the control instruction, so that the hydraulic pump 22 is driven to rotate reversely through the coupler 23, the hydraulic pump 22 sucks hydraulic oil in the upper piston cavity 31 through the first oil path and pumps the hydraulic oil to the lower piston cavity 32 through the second oil path. As the hydraulic pump 22 continues to pump oil, the hydraulic oil in the lower piston chamber 32 generates a high-pressure thrust on the lower end surface of the radial protrusion 30, thereby pushing the piston rod 3 to move upward until the piston rod 3 is completely retracted. Therefore, the reciprocating motion of the piston rod 3 is realized, so that the lower mechanical drilling tool is driven to move, and the corresponding directional requirement is realized. The oil compensation device 4 dynamically compensates oil leakage of the hydraulic integrated system 100 of the system director in a high-pressure working state in the working process, so that the pressure in the system is effectively balanced.
The hydraulic integrated system 100 for the orientator of the continuous tube integrates the hydraulic driving mechanism part and the reversing mechanism part, thereby improving the integration level, greatly reducing the occupied space of the hydraulic integrated system 100 for the orientator and obviously reducing the complexity and the failure rate of the hydraulic integrated system 100 for the orientator. Meanwhile, the hydraulic integrated system 100 of the director can supplement the hydraulic oil inside in time through the oil compensation device 4, so that the oil leakage of the hydraulic integrated system 100 of the director of the dynamic compensation system in a high-pressure working state can be compensated, the pressure in the system can be effectively balanced, the underground working reliability of the hydraulic integrated system 100 of the director can be greatly improved, and the maintenance period of the hydraulic integrated system 100 of the director can be prolonged.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An integrated orienter hydraulic system for coiled tubing, comprising:
a hydraulic housing (1) provided, inside it, with a first cavity (11) and a second cavity (12) axially spaced from each other;
the driving device is arranged in the first cavity and comprises a driving motor (21) and a hydraulic pump (22) connected with the output end of the driving motor, and the hydraulic pump is positioned on the axial inner side of the driving motor;
a piston rod (3) disposed within the second chamber, the piston rod separating an upper piston chamber (31) and a lower piston chamber (32) within the second chamber; and
the downhole electric control device is in electric signal connection with the driving motor;
the side wall area of the hydraulic shell is provided with a first flow passage hole (13) and a second flow passage hole (14) which are circumferentially spaced from each other and axially extend, two ends of the first flow passage hole are respectively communicated with an internal oil passage of the hydraulic pump and the upper piston cavity, two ends of the second flow passage hole are respectively communicated with an internal oil passage of the hydraulic pump and the lower piston cavity, and the driving motor can receive a control signal sent by the underground electric control device and drive the hydraulic pump to rotate forwards or reversely, so that the hydraulic pump correspondingly pumps hydraulic oil into the upper piston cavity or the lower piston cavity, and the piston rod is controlled to reciprocate.
2. The integrated hydraulic director integration system according to claim 1, wherein said first and second flow passage apertures are respectively provided in radially symmetrical sidewall regions of said hydraulic housing.
3. An integrated hydraulic director system according to claim 1 or 2, further comprising an oil compensation device (4) capable of balancing the pressure within the integrated hydraulic director system.
4. The integrated hydraulic director integration system of claim 3, wherein the oil compensator is disposed within the first chamber and connected to the lower end of the hydraulic pump, and the oil compensator has hydraulic oil stored therein.
5. An integrated hydraulic director control system according to claim 1 or 2, characterized in that an electrically controlled joint (5) is provided at the end of the first chamber, one end of which is connected to the drive motor and the other end is connected to the downhole electrical control means.
6. An integrated hydraulic director control system according to claim 5, characterized in that a first sealing seat (61) is fixed at the end of the first chamber, through which the electrical control joint is connected to the drive motor and the downhole electrical control device, respectively.
7. An integrated hydraulic director system according to claim 1 or 2, characterised in that a second sealing seat (62) is fixed at the end of the second chamber, the piston rod passing axially through the second sealing seat and the piston rod partially protruding.
8. An integrated hydraulic director system according to claim 7, wherein said piston rod is in dynamic sealing connection with said second sealing seat.
9. Integrated hydraulic director system according to claim 1, characterised in that said hydraulic pump is connected to the output of said drive motor by means of a coupling (23).
10. Integrated hydraulic director system according to claim 1, characterised in that the axially outer end of the piston rod is configured as a connection joint (33) for connection to a lower mechanical drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277798.6A CN114508520A (en) | 2020-11-16 | 2020-11-16 | Director hydraulic integrated system for coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277798.6A CN114508520A (en) | 2020-11-16 | 2020-11-16 | Director hydraulic integrated system for coiled tubing |
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| Publication Number | Publication Date |
|---|---|
| CN114508520A true CN114508520A (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011277798.6A Pending CN114508520A (en) | 2020-11-16 | 2020-11-16 | Director hydraulic integrated system for coiled tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114508520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007955A1 (en) * | 2022-07-05 | 2024-01-11 | 中国石油化工股份有限公司 | Mechanics-electronics-hydraulics integrated directional tool for continuous tubing drilling |
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