技术领域Technical Field
本发明属于钻井工程技术领域，特别是涉及一种面向钻井现场的带压接箍检测系统。The invention belongs to the technical field of drilling engineering, and in particular relates to a pressure-connected collar detection system for drilling sites.
背景技术Background Art
石油天然气钻井过程是石油天然气开发过程中的一个重要环节，钻井过程中钻杆在井口进出过程直接反映钻井过程的正常进行。油管接箍探测装置主要由基体、密封圈、均压孔、探测柱塞、驱动油缸、油管接箍、接近开关、探测传感器等部分组成。当井内流体压力平衡时，液压控制装置会控制接箍装置处于接箍状态。带压接箍检测装置处于检测过程中。在带压起/下油管过程中，油管均匀段处于接箍检测装置中运动，接箍检测传感器检测到均匀的较小的运动信号，所以检测装置发给上位机信号为正常运动信号，上位机控制匝瓦油压开关控制过程为开放过程，钻杆可以正常上下运动；油管接箍活动至接箍检测处，因为油管接箍外径超过正常油管的外径，接箍通过接箍检测过程中，将使接箍检测传感器检测到的信号发生变化，利用串行数据RS-485把信号发送至上位机，由上位机送达声光报警，同时为闸板防喷器生成调控信号，确保压力平衡时开启密封副，使油管接箍能够正常通过，同时上位机控制卡瓦的液压控制系统，使卡瓦控制，完成正常的接管或卸管控制。The oil and gas drilling process is an important part of the oil and gas development process. The process of the drill pipe entering and exiting the wellhead during the drilling process directly reflects the normal progress of the drilling process. The oil pipe coupling detection device is mainly composed of a base, a sealing ring, a pressure equalizing hole, a detection plunger, a driving cylinder, an oil pipe coupling, a proximity switch, a detection sensor and other parts. When the fluid pressure in the well is balanced, the hydraulic control device will control the coupling device to be in the coupling state. The pressure coupling detection device is in the detection process. During the process of lifting/lowering the tubing under pressure, the uniform section of the tubing moves in the coupling detection device, and the coupling detection sensor detects a uniform and small movement signal, so the signal sent by the detection device to the host computer is a normal movement signal. The host computer controls the slip oil pressure switch control process as an open process, and the drill pipe can move up and down normally; the tubing coupling moves to the coupling detection point, because the outer diameter of the tubing coupling exceeds the outer diameter of the normal tubing, the coupling will change the signal detected by the coupling detection sensor during the coupling detection process, and the signal is sent to the host computer using serial data RS-485, which sends an audible and visual alarm and generates a control signal for the gate blowout preventer to ensure that the sealing pair is opened when the pressure is balanced, so that the tubing coupling can pass normally. At the same time, the host computer controls the hydraulic control system of the slip to control the slip and complete the normal take-over or unloading control.
现场作业期间，如果井下工具口径较大(封隔器等)，且需要通过防喷器，那么接箍检测将造成阻挡，导致现场作业无法进行。按照实际要求，装置选择液压驱动控制，由尾部装入驱动液压缸，在油管接箍探测过程中，向驱动油缸下达指令，使之伸出，从而完成油管接箍探测工作。如果井下工具需要通过，向驱动油缸下达指令，使之收回，为井下工具提供通过通道，如此便可以正常通过，避免其他作业受到不利影响。During field operations, if the downhole tool has a large diameter (packer, etc.) and needs to pass through the blowout preventer, the coupling detection will cause obstruction, making it impossible to carry out field operations. According to actual requirements, the device selects hydraulic drive control, and the drive hydraulic cylinder is installed at the tail. During the tubing coupling detection process, a command is issued to the drive cylinder to extend it, thereby completing the tubing coupling detection work. If the downhole tool needs to pass, a command is issued to the drive cylinder to retract it, providing a passage for the downhole tool, so that it can pass normally and avoid adverse effects on other operations.
目前市场上接箍检测装置主要包括：机械式、磁感式、现有的霍尔式和激光式三种。各种接箍检测装置在长期使用中，由于油污、杂质、空气颗粒、灰尘等易于堆积在检测处，使得接箍检测装置容易出现机械故障损坏无法检测、漏检、错检、下井检测完好而上井检测无法进行等故障，给钻井过程带来极大的安全隐患。At present, there are three main types of coupling detection devices on the market: mechanical, magnetic, existing Hall and laser. In the long-term use of various coupling detection devices, oil, impurities, air particles, dust, etc. are easily accumulated at the detection point, making the coupling detection device prone to mechanical failure, failure to detect, missed detection, wrong detection, and failure to perform the detection when the downhole detection is intact, which brings great safety hazards to the drilling process.
对于机械式检测方式而言，主要是在钻井过程中的不断地起钻、下钻，使机械的弹簧在不断地工作过程中产生过度疲劳而发生损坏，以及不断地起钻、下钻过程中机械长期的接触摩擦损坏，使机械式的检测系统寿命大打折扣。For mechanical detection methods, the continuous pulling out and drilling in the drilling process causes the mechanical spring to become overly fatigued and damaged during the continuous working process, and the long-term contact friction damage of the machine during the continuous pulling out and drilling in the process greatly reduces the life of the mechanical detection system.
对于磁感式和现有的霍尔式检测系统，因为它们在使用过程中都采用的是永久磁铁检测，或者采用的是直流供电产生磁场而进行检测。这样在检测过程中会或多或少的吸附一些铁磁性物质，或者在起钻过程中的泥沙污物会吸附于检测系统中，严重干扰了检测系统，使检测系统不稳定等诸多原因发生。For the magnetic induction and existing Hall detection systems, because they use permanent magnet detection or DC power supply to generate magnetic field for detection, some ferromagnetic substances will be more or less absorbed during the detection process, or mud and dirt during the drilling process will be absorbed in the detection system, which seriously interferes with the detection system and makes the detection system unstable.
对于光电检测系统，在下钻过程中能够完好的检测。主要弊端在于，在起钻过程中因为钻杆或者接箍头所带的泥沙严重阻碍了光电检测系统的检测，无法正常工作。The photoelectric detection system can detect well during the drilling process. The main disadvantage is that the sand and mud carried by the drill pipe or the coupling head seriously hinder the detection of the photoelectric detection system during the drilling process, and it cannot work normally.
发明内容Summary of the invention
本发明的目的是提供一种面向钻井现场的带压接箍检测系统，以解决上述现有技术存在的问题。The purpose of the present invention is to provide a pressure-bonded collar detection system for drilling sites to solve the problems existing in the above-mentioned prior art.
为实现上述目的，本发明提供了一种面向钻井现场的带压接箍检测系统，包括钻杆接箍体，所述钻杆接箍体由隔离圈和位于所述隔离圈外侧的环形导磁圈构成；To achieve the above-mentioned object, the present invention provides a drilling site-oriented crimping collar detection system, comprising a drill pipe collar body, wherein the drill pipe collar body is composed of an isolation ring and an annular magnetic conductive ring located outside the isolation ring;
所述隔离圈和所述环形导磁圈之间安装有若干电磁线圈，各所述电磁线圈沿所述隔离圈的外边缘周向等间距排布，各所述电磁线圈靠近所述隔离圈的一端均安装有传感器；A plurality of electromagnetic coils are installed between the isolation ring and the annular magnetic conductive ring, and the electromagnetic coils are arranged at equal intervals along the outer edge of the isolation ring, and a sensor is installed at one end of each electromagnetic coil close to the isolation ring;
信号检测系统，与各所述传感器电连接，所述信号检测系统包括通信模块，所述信号检测系统通过所述通信模块与上位机通信连接；A signal detection system, electrically connected to each of the sensors, the signal detection system comprising a communication module, and the signal detection system is communicatively connected to a host computer via the communication module;
供电单元，包括直流供电模块和电磁线圈供电模块，所述直流供电模块分别与所述信号检测系统和各所述传感器电连接，所述电磁线圈供电模块与各所述电磁线圈电连接。The power supply unit includes a DC power supply module and an electromagnetic coil power supply module. The DC power supply module is electrically connected to the signal detection system and each of the sensors respectively, and the electromagnetic coil power supply module is electrically connected to each of the electromagnetic coils.
可选的，所述信号检测系统还包括依次连接的加法放大模块、峰值检波模块、直流放大模块、压控振荡器、单稳态模块和单片机；Optionally, the signal detection system further includes an addition amplifier module, a peak detection module, a DC amplifier module, a voltage-controlled oscillator, a monostable module and a single-chip microcomputer connected in sequence;
所述加法放大模块与各所述传感器电连接，所述单片机通过所述通信模块与所述上位机通信连接。The addition amplifier module is electrically connected to each of the sensors, and the single chip microcomputer is communicatively connected to the host computer via the communication module.
可选的，所述通信模块采用RS-485通信电路。Optionally, the communication module adopts RS-485 communication circuit.
可选的，相邻所述电磁线圈的绕组方向相反。Optionally, the winding directions of adjacent electromagnetic coils are opposite.
可选的，各所述传感器均采用霍尔传感器，各所述传感器的瞬时霍尔输出极性均为正极性。Optionally, each of the sensors is a Hall sensor, and the instantaneous Hall output polarity of each of the sensors is positive.
可选的，所述隔离圈采用环氧树脂隔离圈。Optionally, the isolation ring is an epoxy resin isolation ring.
可选的，所述电磁线圈供电模块和所述直流供电模块均连接有电源。Optionally, the electromagnetic coil power supply module and the DC power supply module are both connected to a power source.
可选的，所述电磁线圈供电模块包括依次连接的电源、直流/交流变换器、交流功率放大器和隔离变压器，所述隔离变压器还与各所述电磁线圈电连接。Optionally, the electromagnetic coil power supply module includes a power supply, a DC/AC converter, an AC power amplifier and an isolation transformer connected in sequence, and the isolation transformer is also electrically connected to each of the electromagnetic coils.
本发明的技术效果为：The technical effects of the present invention are:
本发明在使用过程中可以自动检测钻杆的平均直径、接箍头的平均直径与带压接箍检测霍尔传感器所布置的空间直径的差值，并且可以消除钻杆在提升过程中所带泥沙对检测系统的影响；本系统在使用过程中将几个直径平均差值以频率的形式传给了上位机，使系统消除了传输过程中误差，使系统应用更稳定，更可靠。During use, the present invention can automatically detect the difference between the average diameter of the drill pipe, the average diameter of the coupling head and the spatial diameter of the Hall sensor arranged for detecting the crimped coupling, and can eliminate the influence of mud and sand carried by the drill pipe during the lifting process on the detection system; during use, the system transmits several average diameter differences to the host computer in the form of frequency, so that the system eliminates errors in the transmission process and makes the system application more stable and reliable.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单的介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
构成本申请的一部分的附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
图1为本发明实施例中的面向钻井现场的带压接箍检测的整体结构图；FIG1 is an overall structural diagram of a crimping collar detection device for drilling sites in an embodiment of the present invention;
图2为本发明实施例中的面向钻井现场的带压接箍检测供电及磁场激发结构示意图；2 is a schematic diagram of a power supply and magnetic field excitation structure for detecting a crimping collar facing a drilling site in an embodiment of the present invention;
图3为本发明实施例中的面向钻井现场的带压接箍检测传感器检测及加法电路的结构示意图；3 is a schematic diagram of the structure of the detection and addition circuit of the crimping collar detection sensor facing the drilling site in an embodiment of the present invention;
图4为本发明实施例中的面向钻井现场的带压接箍检测峰值检波及放大电路的结构示意图；4 is a schematic diagram of the structure of a peak detection and amplification circuit for crimping collar detection facing a drilling site in an embodiment of the present invention;
图5为本发明实施例中的面向钻井现场的带压接箍检测的A/D转换及单片通信电路的结构示意图；5 is a schematic diagram of the structure of an A/D conversion and single-chip communication circuit for crimping collar detection at a drilling site in an embodiment of the present invention;
标号说明：1、固定导磁圈；2、环氧树脂隔离圈；3、第一电磁线圈；4、第二电磁线圈；5、第三电磁线圈；6、第四电磁线圈；7、第五电磁线圈；8、第六电磁线圈；9、第七电磁线圈；10、第八电磁线圈；11、第一霍尔传感器；12、第二霍尔传感器；13、第三霍尔传感器；14、第四传感器；15、第五霍尔传感器；16、第六霍尔传感器；17、第七霍尔传感器；18、第八传感器；19、供电系统；20、检测通信系统；21、直流/交流变换器；22、交流功率放大器；23、隔离变压器；24、加法放大电路；25、峰值检波电路；26、直流放大电路；27、压控振荡器；28、单稳态电路；29、STC11F02单片机；30、RS-485通信电路。Explanation of reference numerals: 1. Fixed magnetic coil; 2. Epoxy resin isolation ring; 3. First electromagnetic coil; 4. Second electromagnetic coil; 5. Third electromagnetic coil; 6. Fourth electromagnetic coil; 7. Fifth electromagnetic coil; 8. Sixth electromagnetic coil; 9. Seventh electromagnetic coil; 10. Eighth electromagnetic coil; 11. First Hall sensor; 12. Second Hall sensor; 13. Third Hall sensor; 14. Fourth sensor; 15. Fifth Hall sensor; 16. Sixth Hall sensor; 17. Seventh Hall sensor; 18. Eighth sensor; 19. Power supply system; 20. Detection communication system; 21. DC/AC converter; 22. AC power amplifier; 23. Isolation transformer; 24. Adding amplifier circuit; 25. Peak detection circuit; 26. DC amplifier circuit; 27. Voltage-controlled oscillator; 28. Monostable circuit; 29. STC11F02 single-chip microcomputer; 30. RS-485 communication circuit.
具体实施方式DETAILED DESCRIPTION
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述，给出了本发明的若干实施例，但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例，相反地，提供这些实施例的目的是使对本发明的公开内容更加透彻全面。To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
需要说明的是，当元件被称为“固设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件，本文所使用的术语“垂直的”“水平的”“左”“右”以及类似的表述只是为了说明的目的；It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element in the middle; when an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element in the middle at the same time; the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only;
关于本文中所使用的“包含”“包括”“具有”“含有”等等，均为开放性的用语，即意指包含但不限于。The words “include,” “including,” “have,” “contain,” etc. used in this article are open-ended terms, meaning including but not limited to.
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同，本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明，本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
实施例一Embodiment 1
如图1－图5所示，本实施例中提供了一种面向钻井现场的带压接箍检测系统，包括钻杆接箍体，所述钻杆接箍体由隔离圈和位于所述隔离圈外侧的环形导磁圈构成；所述隔离圈和所述环形导磁圈之间安装有若干电磁线圈，各所述电磁线圈沿所述隔离圈的外边缘周向等间距排布，各所述电磁线圈靠近所述隔离圈的一端均安装有传感器；信号检测系统，与各所述传感器电连接，所述信号检测系统包括通信模块，所述信号检测系统通过所述通信模块与上位机通信连接；供电单元，包括直流供电模块和电磁线圈供电模块，所述直流供电模块分别与所述信号检测系统和各所述传感器电连接，所述电磁线圈供电模块与各所述电磁线圈电连接。As shown in Figures 1 to 5, this embodiment provides a pressure-bonded coupling detection system for drilling sites, including a drill pipe coupling body, wherein the drill pipe coupling body is composed of an isolation ring and an annular magnetic conductive ring located outside the isolation ring; a plurality of electromagnetic coils are installed between the isolation ring and the annular magnetic conductive ring, and each of the electromagnetic coils is arranged at equal intervals along the circumference of the outer edge of the isolation ring, and a sensor is installed at one end of each electromagnetic coil close to the isolation ring; a signal detection system is electrically connected to each of the sensors, and the signal detection system includes a communication module, and the signal detection system is communicatively connected to a host computer through the communication module; a power supply unit includes a DC power supply module and an electromagnetic coil power supply module, and the DC power supply module is electrically connected to the signal detection system and each of the sensors, respectively, and the electromagnetic coil power supply module is electrically connected to each of the electromagnetic coils.
本实施例公开了一种面向钻井现场的带压接箍检测，是一种钻井现场起钻杆、下钻杆时的安全检测控制装置，本实施例通过传感器检测带压钻杆体与钻杆接箍体的直径不一样的对比，将信号变换处理后传给上位机系统，控制液压装置的运动，液压装置的运动可带动卡瓦的运动。当传感器检测到接箍头变大时，上位机控制液压系统打开，控制防喷器及卡瓦关闭；当传感器检测到接箍头变小时，上位机控制液压系统关闭，控制防喷器及卡瓦打开，钻杆处于自由提升和下井状态；该面向钻井现场的带压接箍检测系统能智能的检测钻杆体和接箍体的变化，通过自动检测对比，实现监测接箍动作行为，为系统逻辑动作提供实时数据，为上位机判断接箍位置进行防喷器及卡瓦开关操作，对钻井现场安全生产，提供了保障。The present embodiment discloses a pressure-coupling detection for drilling sites, which is a safety detection and control device for lifting and lowering drill pipes at drilling sites. The present embodiment detects the difference in diameter between the pressure-coupling body of the drill pipe and the coupling body of the drill pipe through a sensor, and transmits the signal to the upper computer system after signal conversion and processing, so as to control the movement of the hydraulic device, and the movement of the hydraulic device can drive the movement of the slips. When the sensor detects that the coupling head becomes larger, the upper computer controls the hydraulic system to open, and controls the blowout preventer and slips to close; when the sensor detects that the coupling head becomes smaller, the upper computer controls the hydraulic system to close, and controls the blowout preventer and slips to open, and the drill pipe is in a free lifting and lowering state; the pressure-coupling detection system for drilling sites can intelligently detect the changes of the drill pipe body and the coupling body, and monitor the coupling action behavior through automatic detection and comparison, provide real-time data for the system logic action, and judge the coupling position for the upper computer to operate the blowout preventer and slips, which provides a guarantee for the safe production at the drilling site.
本实施例针对现有的接箍检测装置工作时存在的技术问题，设计了一种能够自动检测接箍点、由上位机自动开启接箍点的通过、或者卡瓦卡死阻止通过、排除一切随钻杆所带污泥、污物而实现自动接箍检测的装置。In view of the technical problems existing in the operation of the existing coupling detection device, this embodiment designs a device that can automatically detect the coupling point, automatically open the passage of the coupling point by the upper computer, or block the passage by the cava, and eliminate all mud and dirt brought along with the drill pipe to realize automatic coupling detection.
面向钻井现场的带压接箍检测系统，由固定导磁圈1、环氧树脂隔离圈2、第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10、第一传感器11、第二传感器12、第三传感器13、第四传感器14、第五传感器15、第六传感器16、第七传感器17、第八传感器18、供电系统19、检测通信系统20等组成。The crimping coupling detection system for drilling sites is composed of a fixed magnetic conductive ring 1, an epoxy resin isolation ring 2, a first electromagnetic coil 3, a second electromagnetic coil 4, a third electromagnetic coil 5, a fourth electromagnetic coil 6, a fifth electromagnetic coil 7, a sixth electromagnetic coil 8, a seventh electromagnetic coil 9, an eighth electromagnetic coil 10, a first sensor 11, a second sensor 12, a third sensor 13, a fourth sensor 14, a fifth sensor 15, a sixth sensor 16, a seventh sensor 17, an eighth sensor 18, a power supply system 19, a detection communication system 20, etc.
其中固定导磁圈1直接固定于第一电磁圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10上端，直接形成导磁的闭合回路；第一传感器11位于第一电磁线圈3的下端，用以检测第一电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第二传感器12位于第二电磁线圈4的下端，用以检测第二电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第三传感器13位于第三电磁线圈5的下端，用以检测第三电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第四传感器14位于第四电磁线圈6的下端，用以检测第四电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第五传感器15位于第五电磁线圈7的下端，用以检测第五电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第六传感器16位于第六电磁线圈8的下端，用以检测第六电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第七传感器17位于第七电磁线圈9的下端，用以检测第七电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；第八传感器18位于第八电磁线圈10的下端，用以检测第八电磁线圈通过钻杆体或者是通过钻杆接箍头的磁场强度；供电系统19由2套独立的供电系统组成，一套供电系统给电磁线圈单独供电，一套供电系统给传感器检测、放大调理电路及通信处理电路供电；检测通信系统20主要负责传感器系统的调理放大处理、与上位机的通信处理工作；环氧树脂隔离圈2主要用于隔离检测系统与钻杆和钻杆接箍头之间的缝隙、同时也用于隔离钻杆和钻杆接箍头所带上的泥沙等附着物的作用，使磁路畅通。The fixed magnetic coil 1 is directly fixed to the upper ends of the first electromagnetic coil 3, the second electromagnetic coil 4, the third electromagnetic coil 5, the fourth electromagnetic coil 6, the fifth electromagnetic coil 7, the sixth electromagnetic coil 8, the seventh electromagnetic coil 9 and the eighth electromagnetic coil 10, directly forming a closed magnetic loop; the first sensor 11 is located at the lower end of the first electromagnetic coil 3, and is used to detect the magnetic field strength of the first electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the second sensor 12 is located at the lower end of the second electromagnetic coil 4, and is used to detect the magnetic field strength of the second electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the third sensor 13 is located at the lower end of the third electromagnetic coil 5, and is used to detect the magnetic field strength of the third electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the fourth sensor 14 is located at the lower end of the fourth electromagnetic coil 6, and is used to detect the magnetic field strength of the fourth electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the fifth sensor 15 is located at the lower end of the fifth electromagnetic coil 7, and is used to detect the magnetic field strength of the fifth electromagnetic coil through the drill pipe body or through the drill pipe coupling head. The sixth sensor 16 is located at the lower end of the sixth electromagnetic coil 8 to detect the magnetic field strength of the sixth electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the seventh sensor 17 is located at the lower end of the seventh electromagnetic coil 9 to detect the magnetic field strength of the seventh electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the eighth sensor 18 is located at the lower end of the eighth electromagnetic coil 10 to detect the magnetic field strength of the eighth electromagnetic coil through the drill pipe body or through the drill pipe coupling head; the power supply system 19 is composed of two independent power supply systems, one power supply system supplies power to the electromagnetic coil alone, and one power supply system supplies power to the sensor detection, amplification and conditioning circuit and communication processing circuit; the detection communication system 20 is mainly responsible for the conditioning and amplification processing of the sensor system and the communication processing work with the host computer; the epoxy resin isolation ring 2 is mainly used to isolate the gap between the detection system and the drill pipe and the drill pipe coupling head, and is also used to isolate the mud and sand attached to the drill pipe and the drill pipe coupling head, so that the magnetic circuit is unobstructed.
所述第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9和第八电磁线圈10，这8个电磁线圈的摆放及布置方式具有特殊的摆放和布置方式，相邻的电磁线圈组成互相逆绕组形式；第一电磁线圈3与固定导磁圈1连接处如果是顺时针绕组、则第二电磁线圈4与固定导磁圈1连接处必须是逆时针绕组、第三电磁线圈5与固定导磁圈1连接处必须是顺时针绕组、第四电磁线圈6与固定导磁圈1连接处必须是逆时针绕组，第五电磁线圈7与固定导磁圈1连接处必须是顺时针绕组、第六电磁线圈8与固定导磁圈1连接处必须是逆时针绕组、第七电磁线圈9与固定导磁圈1连接处必须是顺时针绕组、第八电磁线圈10与固定导磁圈1连接处必须是逆时针绕组、这样第八电磁线圈10与第一电磁线圈3之间构成了完全闭合的导磁圈连接，保证了磁路的连续畅通。The placement and arrangement of the eight electromagnetic coils, namely, the first electromagnetic coil 3, the second electromagnetic coil 4, the third electromagnetic coil 5, the fourth electromagnetic coil 6, the fifth electromagnetic coil 7, the sixth electromagnetic coil 8, the seventh electromagnetic coil 9 and the eighth electromagnetic coil 10, have a special placement and arrangement, and the adjacent electromagnetic coils form mutually counter-clockwise windings; if the first electromagnetic coil 3 and the fixed magnetic conductive ring 1 are connected in a clockwise winding, then the second electromagnetic coil 4 and the fixed magnetic conductive ring 1 must be connected in a counter-clockwise winding, and the third electromagnetic coil 5 and the fixed magnetic conductive ring 1 must be connected in a counter-clockwise winding. It must be a clockwise winding, the connection between the fourth electromagnetic coil 6 and the fixed magnetic coil 1 must be a counterclockwise winding, the connection between the fifth electromagnetic coil 7 and the fixed magnetic coil 1 must be a clockwise winding, the connection between the sixth electromagnetic coil 8 and the fixed magnetic coil 1 must be a counterclockwise winding, the connection between the seventh electromagnetic coil 9 and the fixed magnetic coil 1 must be a clockwise winding, and the connection between the eighth electromagnetic coil 10 and the fixed magnetic coil 1 must be a counterclockwise winding. In this way, a completely closed magnetic coil connection is formed between the eighth electromagnetic coil 10 and the first electromagnetic coil 3, ensuring the continuity and smoothness of the magnetic circuit.
所述第一传感器11、第二传感器12、第三传感器13、第四传感器14、第五传感器15、第六传感器16、第七传感器17、第八传感器18都为线性霍尔传感器，如果第一传感器11放于第一电磁线圈3的下端，并且第一传感器11如果是面向电磁线圈是磁场极性N面，此时的瞬时霍尔输出极性为正极性、则第二传感器12放于第二电磁线圈4的下端，并且第二传感器12则应是面向电磁线圈磁场极性S面，且此时的瞬时霍尔输出极性也应为正极性、第三传感器13放于第三电磁线圈5的下端，并且第三传感器13则应是面向电磁线圈磁场极性N面，此时的瞬时霍尔输出极性也为正极性、第四传感器14放于第四电磁线圈6的下端，并且第四传感器14则是面向电磁线圈磁场极性S面，此时的瞬时霍尔输出极性也为正极性、第五传感器15放于第五电磁线圈7的下端，并且第五传感器15应是面向电磁线圈是磁场极性N面，此时的瞬时霍尔输出极性为正极性、则第六传感器16放于第六电磁线圈8的下端，并且第六传感器16则是面向电磁线圈磁场极性S面，此时的瞬时霍尔输出极性也为正极性、第七传感器17放于第七电磁线圈9的下端，并且第七传感器17则是面向电磁线圈磁场极性N面，此时的瞬时霍尔输出极性也为正极性、第八传感器18放于第八电磁线圈10的下端，并且第八传感器18则是面向电磁线圈磁场极性S面，此时的瞬时霍尔输出极性也为正极性，这样可以确保加法电路的灵敏度，同时也保证了接箍头检测的灵敏度。The first sensor 11, the second sensor 12, the third sensor 13, the fourth sensor 14, the fifth sensor 15, the sixth sensor 16, the seventh sensor 17, and the eighth sensor 18 are all linear Hall sensors. If the first sensor 11 is placed at the lower end of the first electromagnetic coil 3, and the first sensor 11 is facing the N side of the magnetic field polarity of the electromagnetic coil, the instantaneous Hall output polarity at this time is positive, then the second sensor 12 is placed at the lower end of the second electromagnetic coil 4, and the second sensor 12 should face the S side of the magnetic field polarity of the electromagnetic coil, and the instantaneous Hall output polarity at this time should also be positive, the third sensor 13 is placed at the lower end of the third electromagnetic coil 5, and the third sensor 13 should face the N side of the magnetic field polarity of the electromagnetic coil, and the instantaneous Hall output polarity at this time is also positive, the fourth sensor 14 is placed at the lower end of the fourth electromagnetic coil 6, and the fourth sensor 14 is facing the electromagnetic line The fifth sensor 15 is placed at the lower end of the fifth electromagnetic coil 7, and the fifth sensor 15 should face the electromagnetic coil, which is the magnetic field polarity N surface. At this time, the instantaneous Hall output polarity is positive. The sixth sensor 16 is placed at the lower end of the sixth electromagnetic coil 8, and the sixth sensor 16 faces the electromagnetic coil magnetic field polarity S surface. At this time, the instantaneous Hall output polarity is also positive. The seventh sensor 17 is placed at the lower end of the seventh electromagnetic coil 9, and the seventh sensor 17 faces the electromagnetic coil magnetic field polarity N surface. At this time, the instantaneous Hall output polarity is also positive. The eighth sensor 18 is placed at the lower end of the eighth electromagnetic coil 10, and the eighth sensor 18 faces the electromagnetic coil magnetic field polarity S surface. At this time, the instantaneous Hall output polarity is also positive. This can ensure the sensitivity of the adding circuit and also ensure the sensitivity of the coupling head detection.
供电系统19由2套独立的供电系统组成，一套供电系统给电磁线圈单独供电，一套供电系统给传感器检测系统供电，给电磁线圈单独供电的系统采用交流供电系统供电，这样就消除了因采用直流供电产生固定的磁场而吸附铁磁性污物，而使检测系统灵敏度发生变化，进而使检测系统产生故障的可能。通过直流/交流变换，产生1KHz左右的正弦交流信号，通过放大隔离后形成固定频率和有效值的正弦交流电，供给各电磁线圈，这样可以通过交流信号的作用，消除钻井过程中的钻杆上所带的铁磁性物质、泥沙对检测系统形成影响。The power supply system 19 is composed of two independent power supply systems, one of which supplies power to the electromagnetic coil alone, and the other supplies power to the sensor detection system. The system that supplies power to the electromagnetic coil alone is powered by an AC power supply system, which eliminates the possibility that the detection system sensitivity changes due to the fixed magnetic field generated by the use of DC power supply and the adsorption of ferromagnetic dirt, thereby causing the detection system to fail. Through DC/AC conversion, a sinusoidal AC signal of about 1KHz is generated, which is amplified and isolated to form a sinusoidal AC with a fixed frequency and effective value, and is supplied to each electromagnetic coil. In this way, the effect of the AC signal can eliminate the influence of ferromagnetic substances and mud on the drill pipe during the drilling process on the detection system.
设计了8个空间对称的互相耦合电磁系统，设计了8个互相对应的霍尔传感器，形成以加法形式来减少钻井钻杆或钻杆接箍头的偏心，对检测误差的影响。第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10在空间对称分布，第一传感器11、第二传感器12、第三传感器13、第四传感器14、第五传感器15、第六传感器16、第七传感器17、第八传感器18在空间也是对称分布，并且对这8路传感器信号采用加法电路进行求和，这样就完全避免了钻杆和钻杆接箍头在运动过程中偏心于检测系统而发生的检测偏差。Eight spatially symmetrical mutually coupled electromagnetic systems and eight mutually corresponding Hall sensors are designed to form an additive form to reduce the influence of the eccentricity of the drilling drill pipe or the drill pipe coupling head on the detection error. The first electromagnetic coil 3, the second electromagnetic coil 4, the third electromagnetic coil 5, the fourth electromagnetic coil 6, the fifth electromagnetic coil 7, the sixth electromagnetic coil 8, the seventh electromagnetic coil 9, and the eighth electromagnetic coil 10 are symmetrically distributed in space, and the first sensor 11, the second sensor 12, the third sensor 13, the fourth sensor 14, the fifth sensor 15, the sixth sensor 16, the seventh sensor 17, and the eighth sensor 18 are also symmetrically distributed in space, and the signals of these eight sensors are summed by an addition circuit, so that the detection deviation caused by the eccentricity of the drill pipe and the drill pipe coupling head to the detection system during movement is completely avoided.
检测通信系统20中的检测系统中，采用了加法运算电路，使钻杆和钻杆接箍头在运动过程中偏心于检测系统而发生的检测信号偏差得以圆满的解决。In the detection system of the detection communication system 20, an addition circuit is used to satisfactorily solve the detection signal deviation caused by the eccentricity of the drill pipe and the drill pipe coupling head to the detection system during movement.
基于空间对称的互相耦合电磁系统，加法电路就可以正常的做加法运算，这样就避免了钻杆或者钻杆接箍处于接箍检测系统的偏心位置时产生霍尔传感器的输出值不一致的不必要的处理。做加法运算是使处于钻杆或者钻杆接箍处于接箍检测系统的偏心位置时，不同的霍尔传感器产生不同的霍尔电势，会产生不同的检测值，通过加法运算使整个系统处于同一个直径差值范围内。Based on the spatially symmetrical mutually coupled electromagnetic system, the addition circuit can perform addition operations normally, thus avoiding unnecessary processing of inconsistent output values of the Hall sensor when the drill pipe or the drill pipe coupling is in the eccentric position of the coupling detection system. The addition operation is to make different Hall sensors generate different Hall potentials and different detection values when the drill pipe or the drill pipe coupling is in the eccentric position of the coupling detection system, and the entire system is placed in the same diameter difference range through the addition operation.
检测通信系统20中，通信系统采用了RS-485串行数据通信系统，达到了与上位机系统的完美对接。本系统通过峰值检波电路、放大电路可以达到钻杆和接箍钻杆的平均直径与检测霍尔传感器之间的空间平均直1径之差。通过带压接箍检测通过压控振荡器、单稳态放大电路将钻杆和接箍钻杆的平均直径与检测霍尔传感器之间的空间平均直径之差转换成频率信息，再通过STC11F02单片机和RS-485将信号传给上位机进行处理。In the detection communication system 20, the communication system adopts the RS-485 serial data communication system, which achieves perfect docking with the host computer system. This system can achieve the difference between the average diameter of the drill pipe and the coupling drill pipe and the spatial average diameter between the detection Hall sensor through the peak detection circuit and the amplifier circuit. Through the pressure-coupling detection, the difference between the average diameter of the drill pipe and the coupling drill pipe and the spatial average diameter between the detection Hall sensor is converted into frequency information through the voltage-controlled oscillator and the monostable amplifier circuit, and then the signal is transmitted to the host computer for processing through the STC11F02 microcontroller and RS-485.
如图1所示，面向钻井现场的钻杆带压接箍检测，包括固定导磁圈1、环氧树脂隔离圈2、第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10、第一霍尔传感器11、第二霍尔传感器12、第三霍尔传感器13、第四霍尔传感器14、第五霍尔传感器15、第六霍尔传感器16、第七霍尔传感器17、第八霍尔传感器18、供电系统19、检测通信系统20等组成。其中固定导磁圈1通过磁芯分别与第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10相连，并固定在一起，第一电磁线圈3与第二电磁线圈4通电时组成顺畅的完整NS磁极，第二电磁线圈4与第三电磁线圈5通电时也要组成顺畅的完整NS磁极，第三电磁线圈5与第四电磁线圈6通电时组成顺畅的完整NS磁极，第四电磁线圈6与第五电磁线圈7通电时也要组成顺畅的完整NS磁极，第五电磁线圈7与第六电磁线圈8通电时同样要组成顺畅的完整NS磁极，第六电磁线圈8与第七电磁线圈9通电时也要组成顺畅的完整NS磁极，第七电磁线圈9与第八电磁线圈10通电时同样要组成顺畅的完整NS磁极，第八电磁线圈10与第一电磁线圈3通电时同样要组成顺畅的完整NS磁极；第一霍尔传感器11位于第一电磁线圈3磁极下、第二霍尔传感器12位于第二电磁线圈4磁极下、第三霍尔传感器13位于第三电磁线圈5磁极下、第四霍尔传感器14位于第四电磁线圈6磁极下，第五霍尔传感器15位于第五电磁线圈7磁极下、第六霍尔传感器16位于第六电磁线圈8磁极下、第七霍尔传感器17位于第七电磁线圈9磁极下、第八霍尔传感器18位于第八电磁线圈10磁极下，并且它们受磁场极化的方向要一致，也就是说第一霍尔传感器11、第二霍尔传感器12、第三霍尔传感器13、第四霍尔传感器14、第五霍尔传感器15、第六霍尔传感器16、第七霍尔传感器17、第八霍尔传感器18在各自的电磁极性的极化下，这8个线性霍尔传感器在任何同一时刻具有相同极性的霍尔电压特性。As shown in Figure 1, the drill pipe crimping collar detection for the drilling site includes a fixed magnetic ring 1, an epoxy resin isolation ring 2, a first electromagnetic coil 3, a second electromagnetic coil 4, a third electromagnetic coil 5, a fourth electromagnetic coil 6, a fifth electromagnetic coil 7, a sixth electromagnetic coil 8, a seventh electromagnetic coil 9, an eighth electromagnetic coil 10, a first Hall sensor 11, a second Hall sensor 12, a third Hall sensor 13, a fourth Hall sensor 14, a fifth Hall sensor 15, a sixth Hall sensor 16, a seventh Hall sensor 17, an eighth Hall sensor 18, a power supply system 19, a detection communication system 20, etc. The fixed magnetic conductive ring 1 is respectively connected with the first electromagnetic coil 3, the second electromagnetic coil 4, the third electromagnetic coil 5, the fourth electromagnetic coil 6, the fifth electromagnetic coil 7, the sixth electromagnetic coil 8, the seventh electromagnetic coil 9 and the eighth electromagnetic coil 10 through the magnetic core and fixed together. The first electromagnetic coil 3 and the second electromagnetic coil 4 form a smooth and complete NS magnetic pole when energized, and the second electromagnetic coil 4 and the third electromagnetic coil 5 also form a smooth and complete NS magnetic pole when energized. The third electromagnetic coil 5 and the fourth electromagnetic coil 6 form a smooth and complete NS magnetic pole when energized, and the fourth electromagnetic coil 6 and the fifth electromagnetic coil 7 also form a smooth and complete NS magnetic pole when energized. The fifth electromagnetic coil 7 and the sixth electromagnetic coil 8 also form a smooth and complete NS magnetic pole when energized, the sixth electromagnetic coil 8 and the seventh electromagnetic coil 9 also form a smooth and complete NS magnetic pole when energized, the seventh electromagnetic coil 9 and the eighth electromagnetic coil 10 also form a smooth and complete NS magnetic pole when energized, and the eighth electromagnetic coil 10 also forms a smooth and complete NS magnetic pole when energized. To form a smooth and complete NS magnetic pole; the first Hall sensor 11 is located under the magnetic pole of the first electromagnetic coil 3, the second Hall sensor 12 is located under the magnetic pole of the second electromagnetic coil 4, the third Hall sensor 13 is located under the magnetic pole of the third electromagnetic coil 5, the fourth Hall sensor 14 is located under the magnetic pole of the fourth electromagnetic coil 6, the fifth Hall sensor 15 is located under the magnetic pole of the fifth electromagnetic coil 7, the sixth Hall sensor 16 is located under the magnetic pole of the sixth electromagnetic coil 8, the seventh Hall sensor 17 is located under the magnetic pole of the seventh electromagnetic coil 9, and the eighth Hall sensor 18 is located under the magnetic pole of the eighth electromagnetic coil 10, and the directions of their magnetic field polarization must be consistent, that is to say, the first Hall sensor 11, the second Hall sensor 12, the third Hall sensor 13, the fourth Hall sensor 14, the fifth Hall sensor 15, the sixth Hall sensor 16, the seventh Hall sensor 17, and the eighth Hall sensor 18 are polarized at their respective electromagnetic polarities, and these eight linear Hall sensors have Hall voltage characteristics of the same polarity at any same time.
如图2-图5所示，直流/交流变换器21接交流功率放大器22，达到恒定的交流电压值和频率，通过隔离变压器23给第一电磁线圈3、第二电磁线圈4、第三电磁线圈5、第四电磁线圈6、第五电磁线圈7、第六电磁线圈8、第七电磁线圈9、第八电磁线圈10提供同频、同相、幅值稳定的交流电压而产生交变磁场，这样就避开了钻井过程中钻杆和钻杆接箍所带出的铁磁性物质以及泥沙而形成的影响检测的诸多影响因素。As shown in Figures 2 to 5, the DC/AC converter 21 is connected to the AC power amplifier 22 to achieve a constant AC voltage value and frequency, and an AC voltage with the same frequency, phase and stable amplitude is provided to the first electromagnetic coil 3, the second electromagnetic coil 4, the third electromagnetic coil 5, the fourth electromagnetic coil 6, the fifth electromagnetic coil 7, the sixth electromagnetic coil 8, the seventh electromagnetic coil 9 and the eighth electromagnetic coil 10 through the isolation transformer 23 to generate an alternating magnetic field, thereby avoiding many factors affecting detection caused by ferromagnetic materials and mud brought out by the drill pipe and the drill pipe coupling during the drilling process.
加法放大电路24，主要完成同频同相的8个线性霍尔传感器第一霍尔传感器11、第二霍尔传感器12、第三传霍尔传感器13、第四霍尔传感器14、第五霍尔传感器15、第六霍尔传感器16、第七传霍尔传感器17和第八霍尔传感器18信号相加，相加的原因是因为钻杆或者钻杆接箍头通过接箍检测霍尔传感器时往往不是正好处于正中心通过，而出现一些偏离，导致距离霍尔传感器远的霍尔传感器输出电压偏小，而距离霍尔传感器近的霍尔传感器输出电压偏大，为了使检测准确，实施例采用了同相相加的办法，很好的解决了因偏心而影响检测精度的问题。峰值检波电路25是为了检测霍尔传感器的最大峰值电压，使测量精度更高、直流放大电路26是为了给压控振荡器27以更准确，更为稳定测量精度信号；单稳态电路28、是为了使压控振荡器27输出的频率数字化，STC11F02单片机29采用INTO中断处理，以便对单稳态电路28输出的压控振荡器27输出的频率数字化进行计数处理，以便RS-485通信电路30向上位机直接传送检测的数据。The adding amplifier circuit 24 mainly completes the addition of signals of the first Hall sensor 11, the second Hall sensor 12, the third Hall sensor 13, the fourth Hall sensor 14, the fifth Hall sensor 15, the sixth Hall sensor 16, the seventh Hall sensor 17 and the eighth Hall sensor 18 of the same frequency and phase. The reason for the addition is that the drill pipe or the drill pipe coupling head is often not exactly at the center when passing through the coupling to detect the Hall sensor, and some deviation occurs, resulting in a small output voltage of the Hall sensor far from the Hall sensor, while a large output voltage of the Hall sensor close to the Hall sensor. In order to make the detection accurate, the embodiment adopts the method of in-phase addition, which well solves the problem of affecting the detection accuracy due to eccentricity. The peak detection circuit 25 is used to detect the maximum peak voltage of the Hall sensor to make the measurement more accurate. The DC amplifier circuit 26 is used to provide the voltage-controlled oscillator 27 with a more accurate and stable measurement accuracy signal. The monostable circuit 28 is used to digitize the frequency output by the voltage-controlled oscillator 27. The STC11F02 microcontroller 29 uses INTO interrupt processing to count the frequency digitization output by the voltage-controlled oscillator 27 output by the monostable circuit 28, so that the RS-485 communication circuit 30 can directly transmit the detected data to the host computer.
本实施例的带压接箍检测系统在使用过程中可以自动检测钻杆的平均直径、接箍头的平均直径与带压接箍检测霍尔传感器所布置的空间直径的差值，并且可以消除钻杆在提升过程中所带泥沙对检测系统的影响；本系统在使用过程中将几个直径平均差值以频率的形式传给了上位机，使系统消除了传输过程中出现的误差，使系统应用更稳定，更可靠。During use, the crimped coupling detection system of this embodiment can automatically detect the difference between the average diameter of the drill pipe, the average diameter of the coupling head and the spatial diameter of the crimped coupling detection Hall sensor, and can eliminate the influence of mud and sand carried by the drill pipe during the lifting process on the detection system; during use, the system transmits several average diameter differences to the host computer in the form of frequency, so that the system eliminates the errors occurring during the transmission process, making the system application more stable and reliable.
以上所述，仅为本申请较佳的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应该以权利要求的保护范围为准。The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410993915.0ACN118774739B (en) | 2024-07-24 | 2024-07-24 | A pressure-coupling detection system for drilling sites |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410993915.0ACN118774739B (en) | 2024-07-24 | 2024-07-24 | A pressure-coupling detection system for drilling sites |
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| CN118774739Atrue CN118774739A (en) | 2024-10-15 |
| CN118774739B CN118774739B (en) | 2025-03-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410993915.0AActiveCN118774739B (en) | 2024-07-24 | 2024-07-24 | A pressure-coupling detection system for drilling sites |
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| CN (1) | CN118774739B (en) |
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