CN210605509U - Release control circuit of electrical release device of logging headstall - Google Patents
Release control circuit of electrical release device of logging headstall Download PDFInfo
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- CN210605509U CN210605509U CN201921584276.3U CN201921584276U CN210605509U CN 210605509 U CN210605509 U CN 210605509U CN 201921584276 U CN201921584276 U CN 201921584276U CN 210605509 U CN210605509 U CN 210605509U
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Abstract
The utility model provides a release control circuit of electrical release device of logging horse halter, the supporting release process control who is used for electrical release device of logging horse halter, including rectification detection circuitry and melting control circuit, wherein: the rectification detection circuit comprises a transformer T, a main rectification circuit, a first filter capacitor C1, a second filter capacitor C2, a consumption diode VR, an equivalent series resistor R and an electromagnetic relay K, and the melting control circuit comprises a heating wire H, a second piston assembly G and a bidirectional selection switch F; this release control circuit has dual safety protection function, and at the in-process of carrying out the logging, the melting control circuit opens circuit, and unable circular telegram work realizes one-level safety protection, and after stopping logging operation, the melting control circuit is closed, when needing the initiative release logging bridle, and melting control circuit circular telegram fuses the heating wire, and the stroke control through second piston assembly in the fusing process realizes second grade safety protection, reduces the unnecessary waste of the electric power energy.
Description
Technical Field
The utility model relates to a control circuit, in particular to release control circuit of electrical release device of logging bridle.
Background
The logging bridle is a quick connector tool for connecting a logging cable and a logging instrument, and is widely applied in the field of oilfield production. The traditional logging bridle is designed with a mechanical tension weak point for preventing blocking, when an underground instrument is blocked, the force is applied to ensure that the logging bridle is broken at the weak point tension rod to avoid the cable from breaking down in the well, in actual production, the tension rod cannot be reused due to the mechanical weak point, and once the tension rod is broken, the cable needs to be replaced and installed again, so that the problems of large raw material consumption and high production cost exist, particularly, the tension rod cannot be fully transmitted to the weak point tension rod due to the fact that the logging cable is rubbed or extruded by the wall of the well casing, or the phenomenon that the instrument falls and is damaged due to the fact that the logging instrument is located at a certain distance from the well bottom when the clamping position is met. Therefore, the electrical release device for the logging headstall is developed and applied more and more, the electrical release device can be used for realizing the active release of the logging headstall, controlling the release position and protecting a logging instrument; 201520558842 discloses a releasable halter, specifically disclosing an electrical weak point, namely an electrical release device, which is designed and installed on a force-bearing central axis and directly bears the whole weight of the logging halter and a logging instrument connected with the logging halter during logging operation, therefore, the fuse body serving as the safety switch is inevitably required to have enough tensile strength, namely, a larger cross-sectional area, so that the fuse of the safety switch consumes larger electric power, takes longer fusing time, has the problems of large energy consumption and low release efficiency, and meanwhile, the accident fracture hidden danger exists at the connection weak point during logging operation, the stability and reliability of the release is also to be improved and enhanced. Therefore, the improvement of the prior art, the development and application of the novel logging bridle electric release device and the matched design of a safe and stable release control circuit are a practical subject in the field of current oilfield production.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a log bridle electrical release device's release control circuit, the supporting usefulness a log bridle electrical release device's release process control.
A well logging bridle electrical apparatus release device includes: the device comprises a connecting rod seat 1, a clamping jaw 2, a thrust cylinder 3, a spring 5, a connecting rod 11 and a first piston assembly 6; the first piston assembly 6 comprises: a first piston sleeve 6a, a first piston rod 6b, a first insulating seat 6e, a heating wire H wound outside the first piston sleeve 6a, and a meltable metal 6c filled inside the first piston sleeve 6 a; the first piston housing 6a and the first piston rod 6b are made of a conductive metal material, and the first insulating base 6e is made of an insulating material.
Wherein: the upper end surface of the connecting rod seat 1 is coincidently butted with the lower end surface of the connecting rod 11, the lower end is provided with an internal thread for fixedly connecting with a pressure-bearing joint 13, the middle part is provided with an outward convex circular table, and the circular table surface is provided with an annular groove; the clamping jaws 2 are arc-shaped, the outer side surface of each clamping jaw 2 is provided with a smooth transition diameter-increasing area 9, the outer diameter of the lower part of each clamping jaw 2 is increased, a plurality of clamping jaws 2 are combined into a cylindrical combined body, the number of the clamping jaws 2 is preferably 3-6, the cylindrical combined body is annularly sleeved at the overlapped butt joint position of the connecting rod seat 1 and the connecting rod 11, an upper row of flanges 2a and a lower row of flanges 2b arranged on the inner side surface of each clamping jaw 2 are respectively embedded into annular grooves formed in the connecting rod 11 and the connecting rod seat 1, and the connecting rod 11 and the connecting rod seat 1 are connected together in a clamping manner; the upper end of the cylindrical assembly is clamped into a cavity at the lower part of the thrust cylinder 3, the upper end of the cylindrical assembly is fixedly limited by the thrust cylinder 3, the thrust cylinder 3 and the cylindrical assembly can be kept to slide relatively, the lower end of the cylindrical assembly is arranged in an annular groove formed in a circular table surface at the middle part of the connecting rod seat 1, a certain matching gap is preset between the inner side of the cylindrical assembly and the annular groove, and the lower end of the cylindrical assembly is fixedly limited by the annular groove, so that the connecting rod seat 1 and the connecting rod 11 are fixedly connected together; the upper end of the first piston assembly 6 is fixedly connected to the thrust cylinder 3 by means of the first piston rod 6b, and the lower end of the first piston assembly is fixedly connected to the connecting rod seat 1 by means of the first insulating seat 6c, so as to play a role of fixedly supporting the thrust cylinder 3; the spring 5 is mounted on the upper portion of the thrust cylinder 3, the upper end of the spring is limited by a limiting ring 8 fixedly mounted on the connecting rod 11, the lower end of the spring is supported on the thrust cylinder 3, the spring 5 is in a fully compressed state in an initial state and has elastic force, and the elastic force acts on the thrust cylinder 3 and keeps static balance with the supporting force of the first piston assembly 6 on the thrust cylinder 3.
A release control circuit of a logging bridle electric release device is used for controlling the release process of the logging bridle electric release device in a matching way, and comprises: a rectification detection circuit 60 and a melting control circuit 70; the rectification detection circuit 60 comprises a transformer T, a main rectification circuit 61, a first filter capacitor C1, a second filter capacitor C2, a voltage stabilizing diode VR, an equivalent series resistor R and an electromagnetic relay K, wherein the first filter capacitor C1, the second filter capacitor C2, the voltage stabilizing diode VR and the electromagnetic relay K are connected to the output end of the main rectification circuit 61, and the rectification detection circuit comprises: the input end of the transformer T is connected with two detection logging cables X, the output end of the transformer T is connected with the input end of the main rectifying circuit 61, the first filter capacitor C1 is connected in parallel with the output end of the main rectifying circuit 61, one end of the equivalent series resistor R is connected with the positive output end of the main rectifying circuit 61, the voltage stabilizing diode VR is reversely connected in parallel between the other end of the equivalent series resistor R and the negative output end of the main rectifying circuit 61, the second filter capacitor C2 and the electromagnetic relay K are respectively connected in parallel with the voltage stabilizing diode VR, the first filter capacitor C1 and the second filter capacitor C2 are preferably electrolytic capacitors, and meanwhile, the first filter capacitor C1 and the second filter capacitor C2 are respectively connected in parallel with a first coupling capacitor C3 and a second coupling capacitor C4, the filtering and shaping effects are further improved; the melting control circuit 70 is composed of two power supply cables Y for supplying power and a connection loop for connecting the two power supply cables Y, and includes the heating wire H connected as a heating element, and a bidirectional selector switch F controlled by the electromagnetic relay K, wherein: the heating wire H is connected in the connection loop, the bidirectional selector switch F is disposed at the power supply end of a certain power supply cable Y, the contact a1 and the contact a2 of the bidirectional selector switch F are disposed at the corresponding end of the power supply of the certain power supply cable Y and the connection loop, respectively, the bidirectional selector switch F is closed at the contact a1 when the electromagnetic relay K has current flow, and conversely, the bidirectional selector switch F is closed at the contact a2 when the electromagnetic relay K has no current flow.
In the oilfield logging bridle, the logging bridle electrical apparatus release device is arranged in the oilfield logging bridle quick release unit, the upper end of the logging bridle electrical apparatus release device is connected to the connecting rod 11, the lower end of the logging bridle electrical apparatus release device is arranged on the pressure-bearing joint 13, and a release control circuit of the logging bridle electrical release device is used for controlling a release process; the oilfield logging bridle is used for logging operation, alternating current is introduced into the detection logging cable X and is applied to the input end of the rectification detection circuit 60, the input current is transformed by the transformer T, the main rectifying circuit 61 rectifies the signal, and then filters and shapes the signal through the first filter capacitor C1 and the second filter capacitor C2, and at the same time, under the voltage division and the follow current protection of the equivalent series resistor R and the voltage stabilizing diode VR on the current relay K respectively, a stable direct current is generated in the electromagnetic relay K, at which time the current relay K controls the bidirectional selection switch F to be closed at the contact point a1, the power supply cable Y on which the bidirectional selection switch F is mounted is connected, the melting control circuit 70 is disconnected, so that the primary safety protection of the melting control circuit 70 is realized; when the logging bridle needs to be actively released, after the power supply of a downhole logging instrument is interrupted, no current passes through the detection logging cable X, at the moment, the current relay K controls the bidirectional selector switch F to be closed at a contact point a2, the power supply cable Y provided with the bidirectional selector switch F is disconnected, the melting control circuit 70 forms a complete loop, and then power supplies are connected to two ends of the two power supply cables Y, the power supplies can be selected from alternating current or direct current, power is supplied to the heating wire H for heating, and the meltable metal 6c pre-arranged in the first piston sleeve 6a is melted; at this time, as the meltable metal 6c in a molten state continuously flows into the first insulating seat 6c, the first piston rod 6b can move downwards relative to the first piston sleeve 6a, so that the supporting force of the first piston assembly 6 on the thrust cylinder 3 is gradually lost, under the action of the elastic force of the spring 5, the thrust cylinder 3 moves downwards relative to the connecting rod 11 and the jaws 2, when the fixed limit point of the thrust cylinder 3 on each jaw 2 is transferred to the lower end of the jaw 2, because the upper end loses the fixed limit function, when the thrust cylinder 3 is pressed against the transition diameter increasing area 9 outside the jaw 2 and below the position, because each jaw 2 is subjected to moment, the cylindrical assembly formed by the jaws 2 is unfolded in a flower shape at the upper end, so that the flanges 2a on each jaw 2 are respectively separated from the annular grooves formed on the connecting rod 11, thereby disconnecting the connection between the rod holder 1 and the connecting rod 11.
Further, the well logging headstall electrical appliance release device further comprises a second piston assembly G which is used as a non-automatic reset normally-closed slow-motion protective travel switch and used for controlling the connection and disconnection of the melting control circuit 70; the second piston assembly G includes a second piston sleeve 7a, a second piston rod 7b, a second insulating base 7d, and a conductive piston 7c mounted on an end of the second piston rod 7b, the second piston rod 7b is movable in the second piston sleeve 7a relative to the second piston sleeve 7a, a movement stroke length is longer than that of the second piston sleeve 7a, the conductive piston 7c is always kept in close contact with an inner wall of the second piston sleeve 7a in the second piston sleeve 7a, the second piston sleeve 7a and the conductive piston 7c are made of a metal conductive material, the second piston rod 7b and the second insulating base 7d are made of an insulating material, an upper end of the second piston assembly G is fixedly connected to the thrust cylinder 3 by the second piston rod 7b, and a lower end of the second piston assembly G is fixedly connected to the connecting rod base 1 by the second insulating base 7d, the line pin a on the conductive piston 7c and the line pin B on the second piston sleeve 7a are connected in series into the melting control circuit 70, namely: the melting control circuit 70 further includes the second piston assembly G, and the second piston assembly G and the heating wire H are connected in series to the connection loop in the melting control circuit 70; when alternating current is introduced into two power supply cables Y to heat the heating wire H to melt the meltable metal 6c, the thrust cylinder 3 drives the second piston rod 7B to move downwards relative to the second piston sleeve 7a, the conductive piston 7c is kept in the second piston sleeve 7a and is in close contact with the inner surface of the second piston sleeve 7a before the meltable metal 6c is completely melted, so that the melting control circuit 30 is kept on, after the meltable metal 6c is completely melted, the moving stroke of the second piston rod 7B exceeds the length of the second piston sleeve 7a, the conductive piston 7c moves out of the second piston sleeve 7a and is disconnected from the second piston sleeve 7a, so that the connection between the connection pin A of the conductive piston 7c and the connection pin B of the second piston sleeve 7a is disconnected, thereby disconnecting the loop of the melting control circuit 70 and stopping the continuous heating of the heating wire H in time, thereby realizing the secondary safety protection of the melting control circuit 30 and reducing the unnecessary waste of electric power energy.
The utility model has the advantages that: the utility model provides a well logging bridle electrical apparatus release control circuit with dual safety protection function, in carrying out the well logging in-process, rectification detection circuitry control melting control circuit open circuit, make melting control circuit unable circular telegram work, realize the first grade safety protection, after stopping logging operation, rectification detection circuitry control makes melting control circuit closed, on this basis, when needing initiatively to release the well logging bridle, can realize independently releasing to melting control circuit circular telegram fusing heating wire, the stroke protection of through the second piston assembly in the fusing in-process realizes the second grade safety protection to melting control circuit, in time cut off melting control circuit, interrupt power supply, reduce the unnecessary waste of electric power energy.
Drawings
FIG. 1 is one of partial assembly views of a logging bridle with dual release functions of mechanical release and electrical release.
Fig. 2 is a partial assembly view II of the logging bridle with the double releasing functions of mechanical releasing and electrical releasing.
Fig. 3 is a partial assembly drawing III of the logging bridle with the double releasing functions of mechanical releasing and electrical releasing.
FIG. 4 is a simplified diagram of an assembly structure of a well logging bridle electric appliance release device.
FIG. 5 is a schematic diagram of a release state structure of a release device of a logging bridle electrical appliance.
Fig. 6 is a schematic view of the cross-sectional shape of the jaw.
FIG. 7 is a circuit diagram of a release control circuit of the electrical release device of the logging headstall in a logging state.
FIG. 8 is a circuit diagram of a release control circuit of the electrical release device of the logging bridle in a release state.
Detailed Description
The claimed technical solution of the present invention is further described below with reference to the following specific embodiments and the accompanying drawings.
A logging bridle with a mechanical release function and an electrical apparatus release function is composed of a torpedo joint 10, a fishing cap 4, a steel ball connecting device 20 arranged in the fishing cap 4, a mechanical weak point device 30, an electrical release device 40, a split thread sleeve 14, a sealing barrel 15, a pressure-bearing joint 13 and a lower thread sleeve 16, an interface joint 50 and a release control circuit 51 of the logging bridle electrical apparatus release device arranged in the interface joint 50, as shown in figures 1, 2 and 3; the torpedo joint 10 is connected with the release joint 21 through a thread, the torpedo joint 10 is connected with the steel ball connecting device 20, the steel ball joint 24 is connected with the weak point tension rod 31 through a thread, the steel ball connecting device 20 is connected with the weak point tension device 30, the weak point tension rod 31 is connected with the connecting rod 11 through a thread, the mechanical weak point device 30 is connected with the electrical release device 40, and the torpedo joint 10, the steel ball connecting device 20, the mechanical weak point device 30 and the electrical release device 40 are sequentially connected with one another to form a logging bridle quick release unit; further, the connecting rod seat 1 is in threaded connection with the force bearing joint 13, and is in fit connection with the lower thread sleeve 16 to connect the electrical release device 40 with the interface joint 50, the sealing cylinder 15 is borne on an outer convex circular table surface of the pressure bearing joint 13 and is in threaded connection with the pressure bearing joint 13 to play a sealing protection role for the electrical release device 40, and the fishing cap 4 is borne on the outer convex circular table surface of the interface joint 50 and is in threaded connection with the interface joint 50 to play a protection role for the logging bridle quick release unit.
As shown in fig. 4, the electric appliance release device 40 is composed of a connecting rod seat 1, a jaw 2, a thrust cylinder 3, a spring 5, a connecting rod 11, a balancing rod 12, a limiting ring 8, a first piston assembly 6 and a second piston assembly G; the first piston assembly 6 comprises a first piston sleeve 6a, a first piston rod 6b, a first insulating seat 6e, a heating wire H and meltable metal 6c, and the second piston assembly G comprises a second piston sleeve 7a, a second piston rod 7b, a second insulating seat 7d and a conductive piston 7 c; the first piston sleeve 6a, the first piston rod 6b, the second piston sleeve 7a and the conductive piston 7c are made of a conductive metal material, and the first insulating base 6e, the second piston rod 7b and the second insulating base 7d are made of an insulating material.
The clamping jaws 2 are arc-shaped, as shown in fig. 6, the outer side surface is provided with a smooth transition diameter-increasing area 9, the inner side surface is provided with an upper row of flanges 2a and a lower row of flanges 2b, the front end surface of the lower row of flanges 2b is a lower contraction inclined surface, the thickness of a bottom area 2c below the lower row of flanges 2b is reduced, and the inner side surface is also provided with a lower contraction inclined surface; the 6 clamping jaws 2 are combined to form a cylindrical combined body, the upper end of the cylindrical combined body is clamped into a lower cavity of the thrust cylinder 3, the lower end of the cylindrical combined body is arranged in an annular groove formed in a circular table top in the middle of the connecting rod seat 1, and based on the thickness reduction of the bottom area 2d on the clamping jaws 2 and a lower contraction inclined plane of the clamping jaws, a fit clearance is naturally formed between the inner side of the cylindrical combined body and the annular groove as shown in fig. 4 and 5; the upper end of the first piston assembly 6 is fixedly connected to the thrust cylinder 3 by means of the first piston rod 6b, the lower end of the first piston assembly is fixedly connected to the connecting rod seat 1 by means of the first insulating seat 6c, and the thrust cylinder 3 is fixedly supported, meanwhile, the upper end of the second piston assembly G is fixedly connected to the thrust cylinder 3 by means of the second piston rod 7b, and the lower end of the second piston assembly G is fixedly connected to the connecting rod seat 1 by means of the second insulating seat 7 d.
As shown in fig. 7 and 8, the release control circuit 51 of the well logging headstall electrical apparatus release device includes: a rectification detection circuit 60 and a melting control circuit 70; the rectification detection circuit 60 is connected in parallel with the detection logging cable X, and is composed of a transformer T, a main rectification circuit 61, a first filter capacitor C1 connected to the output end of the main rectification circuit 61, a first coupling capacitor C3, a second filter capacitor C2, a second coupling capacitor C4, a zener diode VR, an equivalent series resistor R, and an electromagnetic relay K, wherein the first filter capacitor C1 and the second filter capacitor C2 are tantalum capacitors with excellent temperature characteristics, so as to fully ensure the stability of filtering and shaping of the rectification detection circuit 60, and wherein: the first filter capacitor C1 is 22 microfarads, the first coupling capacitor C3 is 0.1 microfarads, the two are connected in parallel at the output end of the main rectifying circuit 61, the equivalent series resistor R is 150 ohm, one end is connected to the output positive end of the main rectifying circuit 61, the voltage stabilizing diode VR is reversely connected in parallel between the other end of the equivalent series resistor R and the output negative end of the main rectifying circuit 61, the second filter capacitor C2 is 22 microfarads, the second coupling capacitor C4 is 0.1 microfarads, and the two and the electromagnetic relay K are respectively connected in parallel at two ends of the voltage stabilizing diode VR; the melting control circuit 70 is composed of the heating wire H, the second piston assembly G, and a bidirectional selector switch F controlled by the electromagnetic relay K, wherein: the heating wire H and the second piston assembly G are connected in series in a connection loop between two power supply cables Y, the bidirectional selector switch F is disposed at a power supply end of one of the power supply cables Y, and the contact a1 and the contact a2 are disposed on the connection loop between the power supply cable Y and the two power supply cables Y, respectively.
During the logging operation process by using the logging headstall with the dual release function, the detection logging cable Y is connected with an alternating current power supply to supply power to the logging instrument, so that the melting control circuit 70 is continuously disconnected, as shown in fig. 7, if the operation is blocked, a pulling force can be applied to the cable to break the weak point pulling rod 31, and the logging instrument is released through the mechanical weak point device 30; when the logging instrument needs to be actively released for the purpose of protecting the logging instrument or according to the requirements of the logging operation process, the power supply to the downhole logging instrument is interrupted, and the melting control circuit 70 is closed, as shown in fig. 8; a direct current power supply is connected into the melting control circuit 70, the current intensity is controlled within the range of 400-450 milliamperes, the heating wire H in the first piston assembly 6 is heated, the meltable metal 6c is melted, at the moment, the second piston assembly G and the first piston assembly 6 act in a matching mode, after the meltable metal 6c is completely melted, the second piston assembly G cuts off the connecting loop of the melting control circuit 70 through stroke control of the second piston rod 7b, the power supply to the heating wire H is stopped, and unnecessary waste of power energy is reduced; meanwhile, the first piston assembly 6 controls the clamping jaw 2 to release clamping connection between the connecting rod 11 and the connecting rod seat 1, and then when a pulling force is applied to a cable, the cable can pull the torpedo joint 10, the release joint 21, the steel ball joint 24, the weak point tension rod and the connecting rod 11 to lift up, so that relative motion is generated between the steel ball joint 24 and the steel ball lock sleeve 23, the steel ball 22 loses the constraint of the steel ball lock sleeve 23 and is released, the connection between the release joint 21 and the steel ball joint 24 is broken, the pulling force is further applied to the cable, the torpedo joint 10 and the release joint 21 are separated from the fishing cap 4 and are lifted to the ground together with the cable, and other components and logging instruments are left in a well for further fishing.
Claims (4)
1. A release control circuit of a logging bridle electric release device is characterized by comprising: a rectification detection circuit (60) and a melting control circuit (70);
the rectification detection circuit (60) comprises a transformer T, a main rectification circuit (61), a first filter capacitor C1, a second filter capacitor C2, a voltage stabilizing diode VR, an equivalent series resistor R and an electromagnetic relay K, wherein the first filter capacitor C1, the second filter capacitor C2, the voltage stabilizing diode VR, the equivalent series resistor R and the electromagnetic relay K are connected to the output end of the main rectification circuit (61), and the rectification detection circuit comprises: the input end of the transformer T is connected with two detection logging cables (X), the output end of the transformer T is connected with the input end of the main rectifying circuit (61), the first filter capacitor C1 is connected in parallel with the output end of the main rectifying circuit (61), one end of the equivalent series resistor R is connected with the output positive end of the main rectifying circuit (61), the voltage stabilizing diode VR is reversely connected in parallel between the other end of the equivalent series resistor R and the output negative end of the main rectifying circuit (61), and the second filter capacitor C2 and the electromagnetic relay K are respectively connected in parallel with the voltage stabilizing diode VR;
the melting control circuit (70) is composed of two power supply cables (Y) for supplying power and a connecting loop for connecting the two power supply cables (Y), and comprises a heating wire H connected as a heating element and a bidirectional selector switch F controlled by the electromagnetic relay K, wherein: the heating wire H is connected in the connection loop, the bidirectional selector switch F is disposed at the power supply end of a certain power supply cable (Y), the contact a1 and the contact a2 of the bidirectional selector switch F are disposed at the corresponding end of the power supply of the certain power supply cable (Y) and the connection loop, respectively, the bidirectional selector switch F is closed at the contact a1 when the electromagnetic relay K has current flowing, and conversely, the bidirectional selector switch F is closed at the contact a2 when the electromagnetic relay K has no current flowing.
2. The release control circuit of the electrical release device of the logging headstall as claimed in claim 1, characterized in that: the melting control circuit (70) further comprises a second piston assembly G, and the second piston assembly G and the heating wire H are connected in series on the connecting loop in the melting control circuit (70).
3. The release control circuit of the electrical release device of the logging bridle as claimed in claim 1 or 2, wherein: the first filter capacitor C1 and the second filter capacitor C2 are electrolytic capacitors.
4. The release control circuit of the electrical release device of the logging headstall as claimed in claim 3, characterized in that: the first filter capacitor C1 and the second filter capacitor C2 are respectively connected in parallel with a first coupling capacitor C3 and a second coupling capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584276.3U CN210605509U (en) | 2019-09-23 | 2019-09-23 | Release control circuit of electrical release device of logging headstall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584276.3U CN210605509U (en) | 2019-09-23 | 2019-09-23 | Release control circuit of electrical release device of logging headstall |
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| CN210605509U true CN210605509U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921584276.3U Active CN210605509U (en) | 2019-09-23 | 2019-09-23 | Release control circuit of electrical release device of logging headstall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073973A (en) * | 2021-06-04 | 2021-07-06 | 山东辛丁技术有限公司 | Oil well downhole data wireless transmission method |
| CN113250678A (en) * | 2021-05-07 | 2021-08-13 | 中海油田服务股份有限公司 | Control system for halter, ground system and control method thereof |
-
2019
- 2019-09-23 CN CN201921584276.3U patent/CN210605509U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250678A (en) * | 2021-05-07 | 2021-08-13 | 中海油田服务股份有限公司 | Control system for halter, ground system and control method thereof |
| CN113250678B (en) * | 2021-05-07 | 2023-03-14 | 中海油田服务股份有限公司 | Control system for halter, ground system and control method thereof |
| CN113073973A (en) * | 2021-06-04 | 2021-07-06 | 山东辛丁技术有限公司 | Oil well downhole data wireless transmission method |
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Effective date of registration: 20210617 Address after: 157000 1 / F, No.5 workshop, area 1, accelerator, Sino Russian Industrial Park, Jiangnan New Town, Dong'an District, Mudanjiang City, Heilongjiang Province Patentee after: Mudanjiang Aotai Refining Technology Co.,Ltd. Address before: 157000 1st floor, No.5 workshop, area 1, accelerator, Sino Russian Information Industrial Park, Jiangnan New Town, Dong'an District, Mudanjiang City, Heilongjiang Province Patentee before: MUDANJIANG TIANQING TECHNOLOGY Co.,Ltd. |
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