Continuous coiled tubing operation monitoring system
The flow-through coiled tubing operation monitoring system comprehensively monitors the temperature, pressure, and load inside and outside the coiled tubing, solving the problem of incomplete monitoring in existing technologies and improving operational accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA NAT PETROLEUM CORP
- Filing Date
- 2024-12-20
- Publication Date
- 2026-06-23
AI Technical Summary
Existing technologies cannot comprehensively monitor information such as downhole depth, temperature, drilling pressure, torque, and pressure during coiled tubing operations, resulting in low operational accuracy and significant discrepancies between software calculations and actual parameters.
The system employs a flow-through coiled tubing operation monitoring system, which includes a flow-through storage sub, a magnetically positioned temperature and pressure logging tool, and a load logging tool. These are connected via an instrument bus to monitor temperature, pressure, and load data inside and outside the coiled tubing. The system utilizes a high-sensitivity integrated temperature and pressure sensor and a load sensor to achieve comprehensive data acquisition and storage.
It achieves high-precision and accurate reflection of the status of downhole coiled tubing, timely detection of abnormalities, optimization of operating parameters, and improvement of operating efficiency and safety.
Smart Images
Figure CN122257784A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coiled tubing operation monitoring, and more specifically, to a flow-through coiled tubing operation monitoring system. Background Technology
[0002] With the continuous advancement of oil and gas exploration and development technologies, the number of horizontal wells drilled is increasing daily, especially in the development of unconventional oil and gas resources such as coalbed methane and shale gas, where the application of horizontal wells has become a mainstream trend. These oil and gas reservoirs are often located in complex geological structures, making them difficult to reach effectively using traditional vertical well drilling methods. Horizontal wells, with their longer horizontal sections, can penetrate the reservoir, significantly improving the recovery rate of oil and gas resources. Against this backdrop, numerous horizontal well operation projects have emerged. These projects are not only technically challenging but also place higher demands on the monitoring of various parameters during the operation. Among them, coiled tubing operations, as an efficient and flexible drilling and completion technology, occupy an important position in horizontal well operations. During operations such as drilling, sandblasting, and perforation, it is necessary to monitor important information such as the depth, temperature, drilling pressure, torque, and pressure of the coiled tubing. This information is crucial for formulating and adjusting the operation plan.
[0003] Currently, downhole data acquisition devices do not monitor temperature and pressure changes inside and outside coiled tubing. For example, patent application CN115263280A discloses a data acquisition device for downhole leak detection. This device includes, from top to bottom, a coiled tubing connector, a compensation sub, a double-valve valve, a flexible sub, a first centralizer, a collection unit, and a data acquisition sub. The data acquisition sub can acquire at least one of gamma data, tubing coupling position, fluid flow rate, temperature, and pressure. The collection unit can store the data acquired by the data acquisition sub. However, the temperature and pressure sensors in the data acquisition sub can only measure the temperature and pressure inside the tubing, failing to provide comprehensive data for subsequent coiled tubing operations. Furthermore, existing technologies use software simulation to estimate parameter changes during coiled tubing operations. However, the software calculation results often differ significantly from the actual parameters during operations, failing to accurately reflect information such as depth, temperature, drilling pressure, torque, and pressure in the downhole coiled tubing, thus reducing the accuracy of operations such as drilling and perforation. Summary of the Invention
[0004] The purpose of this invention is to address at least one of the aforementioned shortcomings of the prior art. For example, one objective of this invention is to provide a high-precision, high-accuracy, and accurate flow-through coiled tubing operation monitoring system that can reflect information such as depth, temperature, drilling pressure, torque, and pressure of downhole oil connections.
[0005] To achieve the above objectives, the present invention provides a flow-through coiled tubing operation monitoring system.
[0006] The flow-through coiled tubing operation monitoring system includes a flow-through storage sub, a flow-through magnetic positioning temperature and pressure logging tool, and a flow-through load logging tool connected via an instrument bus and a flow-through channel. The flow-through channel is located inside the flow-through storage sub, the flow-through magnetic positioning temperature and pressure logging tool, and the flow-through load logging tool, and is used to pass fluid during coiled tubing operations.
[0007] The flow-through storage sub section provides power to the flow-through magnetic positioning temperature and pressure logging tool and the flow-through load logging tool, and packages and stores magnetic positioning, first temperature, first pressure, second temperature, second pressure, and load data during the oilfield operation. The flow-through load logging tool monitors the load data, which includes at least one or more of tension, pressure, and torque. The flow-through magnetic positioning temperature and pressure logging tool monitors the magnetic positioning, first temperature, first pressure, second temperature, and second pressure, where the first temperature and first pressure are data monitored inside the coiled tubing, and the second temperature and second pressure are data monitored outside the coiled tubing.
[0008] In an exemplary embodiment of the current-flow coiled tubing operation monitoring system method of the present invention, the current-flow storage section may be provided with a first microprocessor, a first power supply, a power supply voltage and current monitoring module, a first memory, a read interface, and an instrument bus interface. The first power supply may be sequentially connected to the power supply voltage and current monitoring module and the first memory. The first memory may be connected to the first memory, the read interface, and the instrument bus interface respectively. The instrument bus interface may be connected to the instrument bus.
[0009] In an exemplary embodiment of the current-flow coiled tubing operation monitoring system method of the present invention, the current-flow storage section may also be provided with an instrument bus control switch, which can be connected to the first power supply and the first microprocessor respectively, and can control the switching of the instrument bus.
[0010] In an exemplary embodiment of the flow-through coiled tubing operation monitoring system method of the present invention, the flow-through magnetic positioning temperature and pressure logging instrument may be equipped with a first bus isolation module, a second power supply, a second microprocessor, a third microprocessor, a first address decoupling module, a first data loading module, a first integrated temperature and pressure sensor, a second integrated temperature and pressure sensor, and a first magnetic positioning sensor. The first bus isolation module may be connected to the instrument bus and the second power supply respectively; the second power supply may be connected to the second microprocessor and the third microprocessor respectively; the second microprocessor may be connected to the first address decoupling module and the first data loading module respectively; the first address decoupling module and the first data loading module may be connected to the instrument bus respectively; the third microprocessor may be connected to the first integrated temperature and pressure sensor, the second integrated temperature and pressure sensor, and the first magnetic positioning sensor respectively. The first integrated temperature and pressure sensor can be used to detect the first temperature and the first pressure; the second integrated temperature and pressure sensor can be used to detect the second temperature and the second pressure; and the first magnetic positioning sensor can be used to detect the magnetic positioning.
[0011] In an exemplary embodiment of the flow-through coiled tubing operation monitoring system method of the present invention, the first temperature and pressure integrated sensor may be provided with a first frequency doubling circuit, a first oscillation circuit, a first well temperature probe, a first signal amplification module, and a first pressure sensor. The first frequency doubling circuit, the first oscillation circuit, and the first well temperature probe may be connected in sequence. The first signal amplification module may be connected to the first pressure sensor. The first frequency doubling circuit and the first signal amplification module may be connected to the third microprocessor respectively.
[0012] The second integrated temperature and pressure sensor may include a second frequency multiplier circuit, a second oscillation circuit, a second well temperature probe, a second signal amplification module, and a second pressure sensor. The second frequency multiplier circuit, the second oscillation circuit, and the second pressure sensor may be connected in sequence. The second signal amplification module may be connected to the second sensor. The second frequency multiplier circuit and the second signal amplification module may be connected to the third microprocessor respectively.
[0013] In an exemplary embodiment of the flow-through coiled tubing operation monitoring system method of the present invention, the flow-through load logging tool may be equipped with a second bus isolation module, a third power supply, a fourth microprocessor, a fifth microprocessor, a second address decoupling module, a second data loading module, a tension / compression sensor, a torque sensor, a temperature sensor, and a vibration sensor. The second bus isolation module may be connected to the instrument bus and the third power supply, respectively. The third power supply may be connected to the fourth and fifth microprocessors, respectively. The third microprocessor may be connected to the second address decoupling module and the second data loading module, respectively. The second address decoupling module and the second data loading module may be connected to the instrument bus, respectively. The fifth microprocessor may be connected to the tension / compression sensor, the torque sensor, the temperature sensor, and the vibration sensor, respectively. The tension / compression sensor can be used to monitor tension and pressure, and the torque sensor can be used to monitor torque.
[0014] In an exemplary embodiment of the current flow coiled tubing operation monitoring system method of the present invention, a third signal amplification module may be provided between the fifth microprocessor and the tension / compression sensor and the torque sensor, respectively.
[0015] In an exemplary embodiment of the current flow coiled tubing operation monitoring system method of the present invention, at least one voltage-to-frequency conversion module may be provided before the signal amplification module.
[0016] In an exemplary embodiment of the overflow coiled tubing operation monitoring system method of the present invention, the first power source may be a battery pack selected according to the coiled tubing operation temperature requirements.
[0017] In an exemplary embodiment of the flow-through coiled tubing operation monitoring system method of the present invention, the torque range of the flow-through load logging tool can be 0 to 1500 N·m, the torque accuracy can be ±5%FS, the tension measurement range can be -20t to 20t, and the accuracy can be ±1.5%FS; the temperature accuracy of the flow-through magnetic positioning temperature and pressure logging tool can be ±2℃, the temperature response time can be less than 0.5S, the magnetic positioning signal-to-noise ratio can be greater than 3:1, and the magnetic positioning speed requirement can be greater than or equal to 600 m / h; the continuous working time of the flow-through storage sub can be greater than or equal to 24 hours.
[0018] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:
[0019] (1) The flow-through coiled tubing operation monitoring system of the present invention can circulate fluid through the internal flow-through channels of the flow-through storage sub, the flow-through magnetic positioning temperature and pressure logging tool, and the flow-through load logging tool, and will not be affected by the vibration generated during coiled tubing operation or the failure of the fluid system seal. The main body of the instrument adopts the flow-through and storage design concept to meet the string mechanical testing requirements under relatively severe working conditions such as coiled tubing fracturing and drilling.
[0020] (2) The overflow coiled tubing operation monitoring system of the present invention supplies power to the downhole tool string by installing a high-temperature resistant high-performance lithium battery in the overflow storage section, which can ensure the reliable operation of the downhole instruments; the voltage and current monitoring module manages and monitors the voltage and current information of the battery pack and controls the opening and closing of the instrument bus power supply; the memory packages and stores the magnetic positioning, temperature, pressure and load data monitored during the oilfield operation; the high-sensitivity temperature and pressure integrated sensor of the overflow magnetic positioning / temperature / pressure logging tool can monitor the changes in temperature and pressure inside and outside the coiled tubing during the operation; the overflow load logging tool can monitor the changes in tension, pressure and torque during the oilfield operation, providing a basis for formulating and adjusting the operation plan, and effectively solving the problem that the software calculation results differ greatly from the actual parameters during the oilfield operation.
[0021] (3) The flow-through coiled tubing operation monitoring system of the present invention can gain a more comprehensive understanding of the working status of the tubing and changes in the surrounding environment by measuring the temperature and pressure data inside and outside the coiled tubing. This helps to detect any abnormalities that may exist inside or outside the tubing in a timely manner, such as leaks, blockages, or abnormal pressure. Furthermore, based on the changes in temperature and pressure inside and outside the tubing, operating parameters, such as the temperature and pressure of the injected fluid, can be adjusted to optimize operating efficiency and reduce operating costs. Attached Figure Description
[0022] The above and other objects and / or features of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:
[0023] Figure 1 A schematic diagram of an embodiment of the flow-through coiled tubing operation monitoring system of the present invention is shown.
[0024] Figure 2 A schematic diagram of the flow-through storage short-power-saving principle of an embodiment of the flow-through coiled tubing operation monitoring system of the present invention is shown.
[0025] Figure 3 The diagram shows the electrical schematic of a flow-through magnetic positioning temperature and pressure logging instrument, representing an embodiment of the flow-through coiled tubing operation monitoring system of the present invention.
[0026] Figure 4The diagram shows the electrical schematic of a flow load logging instrument according to an embodiment of the flow-through coiled tubing operation monitoring system of the present invention. Detailed Implementation
[0027] The flow-through coiled tubing operation monitoring system of the present invention will be described in detail below with reference to exemplary embodiments.
[0028] It should be noted that the terms "first," "second," "third," etc., used in this invention are for ease of description and distinction only, and should not be construed as indicating or implying relative importance or describing a specific order or sequence. Terms such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" are only for ease of description and to establish relative orientation or positional relationships, and do not indicate or imply that the component referred to must have that specific orientation or position.
[0029] Coiled tubing, with its continuous and seamless nature, enables efficient drilling, milling, cleaning, and perforation operations under complex geological conditions, significantly improving operational efficiency and safety. Real-time monitoring of the coiled tubing and its operating environment is crucial during these operations. Specifically, monitored parameters include, but are not limited to, tubing depth, temperature, drilling pressure, torque, and overall pressure. Depth information helps precisely control the drill bit position, ensuring operations follow a predetermined trajectory. Temperature monitoring reflects changes in formation temperature, providing a basis for developing thermal management strategies. Drilling pressure and torque are key indicators for assessing drill bit performance and formation characteristics, playing a vital role in preventing drill bit damage and formation collapse. Pressure monitoring enables the timely detection and handling of potential well control risks, ensuring operational safety. Current downhole data monitoring devices typically only monitor data within the tubing. Monitoring only data within the tubing fails to provide a comprehensive understanding of external environmental changes, such as pressure and temperature variations, which may affect the accurate assessment of the overall tubing condition. For example, when there are abnormalities outside the oil pipeline, such as leaks or external damage, monitoring only the data inside the pipeline may not be able to detect these safety hazards in time, thus increasing the risk of accidents. Furthermore, more complex sensors and monitoring systems are needed, and current technologies have not yet addressed this issue.
[0030] To address the aforementioned issues, the inventors proposed a flow-through coiled tubing operation monitoring system. This system utilizes a flow-through load logging tool, a flow-through magnetic positioning temperature and pressure logging tool, and a flow-through storage sub connected via an instrument bus to manage and monitor temperature and pressure changes inside and outside the tubing, magnetic positioning, and various load data during coiled tubing operations.
[0031] To achieve the above objectives, the present invention provides a flow-through coiled tubing operation monitoring system.
[0032] In a first exemplary embodiment of the flow-through coiled tubing operation monitoring system of the present invention, the flow-through coiled tubing operation monitoring system includes a flow-through storage sub, a flow-through magnetic positioning temperature and pressure logging tool, and a flow-through load logging tool connected via an instrument bus and a flow-through channel. The flow-through channel is located inside the flow-through storage sub, the flow-through magnetic positioning temperature and pressure logging tool, and the flow-through load logging tool, and is used to allow fluid to pass through during coiled tubing operation.
[0033] The flow-through storage sub section can power the flow-through magnetic positioning temperature and pressure logging tool and the flow-through load logging tool, and package and store the magnetic positioning, first temperature, first pressure, second temperature, second pressure and load data during the oilfield operation.
[0034] Optionally, the overcurrent load logging tool may include a second bus isolation module, a third power supply, a fourth microprocessor, a fifth microprocessor, a second address decoupling module, a second data loading module, a tension / compression sensor, a torque sensor, a temperature sensor, and a vibration sensor. The second bus isolation module can be connected to both the instrument bus and the third power supply; the third power supply can be connected to both the fourth and fifth microprocessors; the third microprocessor can be connected to both the second address decoupling module and the second data loading module; the second address decoupling module and the second data loading module can be connected to both the instrument bus; and the fifth microprocessor can be connected to the tension / compression sensor, the torque sensor, the temperature sensor, and the vibration sensor. The tension / compression sensor can be used to monitor tension and compression, and the torque sensor can be used to monitor torque.
[0035] Optionally, a third signal amplification module can be provided between the fifth microprocessor and both the tension / compression sensor and the torque sensor.
[0036] The flow load logging tool can monitor load data, which includes at least one or more of tension, pressure and torque.
[0037] Optionally, the overcurrent magnetic positioning temperature and pressure logging tool may include a first bus isolation module, a second power supply, a second microprocessor, a third microprocessor, a first address decoupling module, a first data loading module, a first integrated temperature and pressure sensor, a second integrated temperature and pressure sensor, and a first magnetic positioning sensor. The first bus isolation module can be connected to the instrument bus and the second power supply, and the second power supply can be connected to the second and third microprocessors. The second microprocessor can be connected to the first address decoupling module and the first data loading module, and the first address decoupling module and the first data loading module can be connected to the instrument bus. The third microprocessor can be connected to the first integrated temperature and pressure sensor, the second integrated temperature and pressure sensor, and the first magnetic positioning sensor. The first integrated temperature and pressure sensor can be used to detect a first temperature and a first pressure, the second integrated temperature and pressure sensor can be used to detect a second temperature and a second pressure, and the first magnetic positioning sensor can be used to detect magnetic positioning.
[0038] Optionally, the first integrated temperature and pressure sensor may include a first frequency doubling circuit, a first oscillation circuit, a first well temperature probe, a first signal amplification module, and a first pressure sensor. The first frequency doubling circuit, the first oscillation circuit, and the first well temperature probe may be connected in sequence, the first signal amplification module may be connected to the first pressure sensor, and the first frequency doubling circuit and the first signal amplification module may be connected to the third microprocessor respectively.
[0039] The second integrated temperature and pressure sensor may include a second frequency doubling circuit, a second oscillation circuit, a second well temperature probe, a second signal amplification module, and a second pressure sensor. The second frequency doubling circuit, the second oscillation circuit, and the second well temperature probe may be connected in sequence. The second signal amplification module may be connected to the second pressure sensor. The second frequency doubling circuit and the second signal amplification module may be connected to a third microprocessor respectively.
[0040] The overflow magnetic positioning temperature and pressure logging tool can monitor magnetic positioning, first temperature, first pressure, second temperature and second pressure. The first temperature and first pressure are data monitored inside the coiled tubing, while the second temperature and second pressure are data monitored outside the coiled tubing.
[0041] Optionally, the overcurrent storage section may include a first microprocessor, a first power supply, a power supply voltage and current monitoring module, a first memory, a read interface, and an instrument bus interface. The first power supply may be connected in sequence to the power supply voltage and current monitoring module and the first memory. The first memory may be connected to the first memory, the read interface, and the instrument bus interface respectively. The instrument bus interface may be connected to the instrument bus.
[0042] Optionally, the primary power source can be a battery pack selected based on the temperature requirements of continuous tubing operations.
[0043] Optionally, the overcurrent storage section may also be equipped with an instrument bus control switch, which can be connected to the first power supply and the first microprocessor respectively, and can control the switching of the instrument bus.
[0044] Optionally, at least one voltage-to-frequency conversion module can be provided before the signal amplification module.
[0045] Optionally, the torque range of the overflow load logging tool can be 0 to 1500 N·m, the torque accuracy can be ±5% FS, the tension measurement range can be -20t to 20t, and the accuracy can be ±1.5% FS; the temperature accuracy of the overflow magnetic positioning temperature and pressure logging tool can be ±2℃, the temperature response time can be less than 0.5S, the magnetic positioning signal-to-noise ratio can be greater than 3:1, and the magnetic positioning speed requirement can be greater than or equal to 600 m / h; the continuous working time of the overflow storage sub can be greater than or equal to 24 hours.
[0046] Optionally, a flow-through coiled tubing operation monitoring system can be used to monitor the flow channels through which the fluid is supplied. During operation, fluid is pumped from the ground through the coiled tubing, flows through the flow channels, and then reaches the coiled tubing tool without affecting the tool's operation.
[0047] To better understand the exemplary embodiments of the present invention described above, further descriptions are provided below in conjunction with specific embodiments and accompanying drawings, but the examples given are not intended to limit the present invention.
[0048] Example 1
[0049] In this embodiment, a flow-through coiled tubing operation monitoring system is provided, such as... Figure 1 As shown, the monitoring system may include a flow-through storage sub, a flow-through magnetic positioning / temperature / pressure logging tool, and a flow-through load logging tool. This flow-through coiled tubing operation monitoring system can be added to a conventional coiled tubing operation tool string. One end of the flow-through storage sub can be connected to the coiled tubing, and the other end can be connected to the flow-through magnetic positioning / temperature / pressure logging tool. The other end of the flow-through magnetic positioning / temperature / pressure logging tool can be connected to the flow-through load logging tool.
[0050] The internal circuits of the overcurrent storage sub, overcurrent magnetic positioning / temperature / pressure logging tool, and overcurrent load logging tool can all be equipped with a WSTbus (single-core bus) interface. The bus is a common communication trunk for transmitting information between various functional components of a computer. The WSTbus interface adopts the WSTbus transmission method. The communication rate of the instrument's communication bus can be 500Kbits / sec. The instrument's communication bus code can adopt AMI code, and the instrument's communication bus amplitude can be ±1V.
[0051] Overcurrent storage short sections can be like Figure 2As shown, the instrument includes a microprocessor 1, a battery pack, a control switch, a memory, a power supply voltage and current monitoring module, a WSTbus interface, and a read interface. The battery pack can be connected to the microprocessor 1 via the power supply voltage and current monitoring module, and can also be connected to the control switch for power supply. The control switch, memory, WSTbus interface, and read interface can all be electrically connected to the microprocessor 1, and the control switch can be connected to the WSTbus interface. Different battery pack models with varying temperature performance can be selected to meet different operational requirements; for example, a high-performance, high-temperature resistant battery pack (lithium battery) can be selected for power supply. The power supply voltage and current monitoring module monitors the voltage and current information of the battery pack. The control switch controls the on / off switching of the instrument's bus power supply. The memory can be used to package and store magnetic positioning, temperature, pressure, and load data monitored during continuous oil operations.
[0052] Optionally, the microprocessor 1 can be a microprocessor of model PIC24FJ128GA106, the control switch can be an IC chip of model IRFR5410PBFIC, the memory can be a memory of model K9K8G08U0B, the read interface can be SPI (Serial Peripheral Interface), the upper connection thread of the overcurrent storage sub-section can be 2 to 3 / 8" PAC, the lower connection thread can be 2 to 7 / 8" PAC, the memory capacity can be 512M, and the continuous working time of the overcurrent storage sub-section can reach greater than or equal to 24 hours.
[0053] The overflow magnetic positioning temperature and pressure logging tool can be used as follows Figure 3 As shown, the device includes a power supply 1, a microprocessor 2, a microprocessor 3, a bus isolation module 1, an address decoupling module 1, a data loading module 1, a high-sensitivity integrated temperature and pressure sensor 1, and a high-sensitivity integrated temperature and pressure sensor 2. The bus isolation module 1 can be connected to the power supply 1, which can supply power to the microprocessors 2 and 3 via connection. The microprocessor 2 can be electrically connected to both the address decoupling module 1 and the data loading module 1. The microprocessor 3 can be electrically connected to the high-sensitivity integrated temperature and pressure sensor 1, the high-sensitivity integrated temperature and pressure sensor 2, and a magnetic positioning sensor. Both the high-sensitivity integrated temperature and pressure sensor 1 and the high-sensitivity integrated temperature and pressure sensor 2 include a temperature sensor and a pressure sensor. The high-sensitivity integrated temperature and pressure sensor 1 can be used for internal temperature and pressure monitoring, while the high-sensitivity integrated temperature and pressure sensor 2 can be used for external temperature and pressure monitoring.
[0054] Both the high-sensitivity temperature and pressure integrated sensor 1 and the high-sensitivity temperature and pressure integrated sensor 2 are equipped with a pressure-frequency conversion module, a signal amplification module and a pressure sensor connected in sequence, and a frequency multiplier circuit, an oscillation circuit and a well temperature probe connected in sequence.
[0055] The high-sensitivity temperature and pressure integrated sensor can also be a titanium / silicon-sapphire sensor, which has advanced technology and structure, and features high temperature, high pressure, high precision, high stability and high sensitivity.
[0056] The magnetic positioning sensor can be a CCL sensor (Collar Locator), which measures the casing couplings using an electromagnetic method. Depth can be corrected by specific coupling positions (short casing) or by using a corresponding coupling table. A coupling table is a table recording the length of each casing section during casing installation.
[0057] Optionally, microprocessor 2 and microprocessor 3 can be selected from microprocessors of model DSPIC33EP512MC806, and the upper and lower connecting threads of the overflow magnetic positioning temperature and pressure logging tool can be 2-7 / 8" PAC, the temperature resolution can be 0.01℃, the temperature accuracy can be ±2℃, the temperature response time can be less than 0.5S, the magnetic positioning signal-to-noise ratio can be greater than 3:1, the magnetic positioning speed requirement can be greater than or equal to 600 m / h, the pressure resolution can be 0.01MPa, and the pressure measurement accuracy can be 0.1MPa.
[0058] Overflow load logging tool, such as Figure 4 As shown, the system may also include a power supply 2, a microprocessor 4, a microprocessor 5, a bus isolation module 2, an address decoupling module 2, a data loading module 2, a vibration sensor, a temperature sensor, a tension / compression sensor, and a torque sensor. The bus isolation module 2 can be connected to the power supply 2, which can be powered by connecting to the microprocessors 4 and 5. The microprocessor 4 can be electrically connected to the address decoupling module 2 and the data loading module 2, respectively. The microprocessor 5 can be electrically connected to the vibration sensor, temperature sensor, tension / compression sensor, and torque sensor, respectively. A signal amplification module can also be installed between the microprocessor 5 and the tension / compression sensor and torque sensor. A voltage-to-frequency conversion module can be installed before the signal amplification module. The overcurrent load logging tool can monitor changes in tension, pressure, and torque during continuous oil operations, providing a basis for formulating and adjusting operational plans.
[0059] Optionally, microprocessor 4 and microprocessor 5 can be microprocessors of model DSPIC33EP512MC806. The upper connection thread of the flow-through magnetic positioning / temperature / flow-through load logging tool is 2 to 7 / 8" PAC, and the lower connection thread is 2 to 3 / 8" PAC. The torque range of the flow-through load logging tool is 0 to 1500 N·m, and the torque accuracy of the flow-through load logging tool is ±5% FS. The tension measurement range of the flow-through load logging tool can be -20t to 20t, and the accuracy can be ±1.5% FS.
[0060] Example 2
[0061] This embodiment provides a method for using a flow-through coiled tubing operation monitoring system, which includes flow-through coiled tubing operation monitoring system software that is compatible with the flow-through coiled tubing operation monitoring system of Embodiment 1. The flow-through coiled tubing operation monitoring system software can read the magnetic positioning, temperature, pressure, and load information stored in the flow-through storage section via a data cable or other methods, and can display the corresponding curves through the corresponding curve generation module. At the same time, it can also convert the data into common formats such as ASCII or LAS for output.
[0062] Optionally, the flow-through coiled tubing operation monitoring system software can monitor information such as the depth of the coiled tubing, the temperature and pressure inside and outside the tubing, drilling pressure, torque, tension and torque during operations such as drilling, sandblasting and perforation, providing a basis for formulating and adjusting operation plans.
[0063] Although the present invention has been described above in conjunction with exemplary embodiments and accompanying drawings, those skilled in the art should understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.
Claims
1. A flow-through coiled tubing operation monitoring system, characterized in that, The flow-through coiled tubing operation monitoring system includes a flow-through storage sub, a flow-through magnetic positioning temperature and pressure logging tool, and a flow-through load logging tool, all connected via an instrument bus and a flow-through channel. The flow-through channel is located inside the flow-through storage sub, the flow-through magnetic positioning temperature and pressure logging tool, and the flow-through load logging tool, and is used to circulate fluid during coiled tubing operations. The overflow storage section can power the overflow magnetic positioning temperature and pressure logging tool and the overflow load logging tool, and package and store magnetic positioning, first temperature, first pressure, second temperature, second pressure and load data during the oilfield operation. The flow-through load logging tool can monitor the load data, which includes at least one or more of tension, pressure, and torque. The overflow magnetic positioning temperature and pressure logging tool can monitor the magnetic positioning, first temperature, first pressure, second temperature and second pressure. The first temperature and first pressure are data monitored inside the coiled tubing, and the second temperature and second pressure are data monitored outside the coiled tubing.
2. The flow-through coiled tubing operation monitoring system according to claim 1, characterized in that, The overcurrent storage section includes a first microprocessor, a first power supply, a power supply voltage and current monitoring module, a first memory, a read interface, and an instrument bus interface. The first power supply is sequentially connected to the power supply voltage and current monitoring module and the first memory. The first memory is connected to the first memory, the read interface, and the instrument bus interface. The instrument bus interface is connected to the instrument bus.
3. The flow-through coiled tubing operation monitoring system according to claim 2, characterized in that, The overcurrent storage section is also equipped with an instrument bus control switch, which is connected to the first power supply and the first microprocessor respectively, and can control the switching of the instrument bus.
4. The flow-through coiled tubing operation monitoring system according to claim 1, characterized in that, The overcurrent magnetic positioning temperature and pressure logging tool includes a first bus isolation module, a second power supply, a second microprocessor, a third microprocessor, a first address decoupling module, a first data loading module, a first integrated temperature and pressure sensor, a second integrated temperature and pressure sensor, and a first magnetic positioning sensor. The first bus isolation module is connected to the instrument bus and the second power supply, which in turn is connected to the second and third microprocessors. The second microprocessor is connected to the first address decoupling module and the first data loading module, which are both connected to the instrument bus. The third microprocessor is connected to the first integrated temperature and pressure sensor, the second integrated temperature and pressure sensor, and the first magnetic positioning sensor. The first integrated temperature and pressure sensor detects the first temperature and the first pressure, the second integrated temperature and pressure sensor detects the second temperature and the second pressure, and the first magnetic positioning sensor detects the magnetic positioning.
5. The flow-through coiled tubing operation monitoring system according to claim 4, characterized in that, The first integrated temperature and pressure sensor includes a first frequency multiplier circuit, a first oscillation circuit, a first well temperature probe, a first signal amplification module, and a first pressure sensor. The first frequency multiplier circuit, the first oscillation circuit, and the first well temperature probe are connected in sequence. The first signal amplification module is connected to the first pressure sensor. The first frequency multiplier circuit and the first signal amplification module are respectively connected to the third microprocessor. The second integrated temperature and pressure sensor includes a second frequency multiplier circuit, a second oscillation circuit, a second well temperature probe, a second signal amplification module, and a second pressure sensor. The second frequency multiplier circuit, the second oscillation circuit, and the second well temperature probe are connected in sequence, and the second frequency multiplier circuit and the second signal amplification module are respectively connected to the third microprocessor.
6. The flow-through coiled tubing operation monitoring system according to claim 1, characterized in that, The overcurrent load logging tool includes a second bus isolation module, a third power supply, a fourth microprocessor, a fifth microprocessor, a second address decoupling module, a second data loading module, a tension / compression sensor, a torque sensor, a temperature sensor, and a vibration sensor. The second bus isolation module is connected to both the instrument bus and the third power supply. The third power supply is connected to both the fourth and fifth microprocessors. The third microprocessor is connected to both the second address decoupling module and the second data loading module, which are both connected to the instrument bus. The fifth microprocessor is connected to the tension / compression sensor, the torque sensor, the temperature sensor, and the vibration sensor. The tension / compression sensor monitors the tension and compression forces, and the torque sensor monitors the torque.
7. The flow-through coiled tubing operation monitoring system according to claim 6, characterized in that, A third signal amplification module is provided between the fifth microprocessor and the tension / compression sensor and the torque sensor.
8. The flow-through coiled tubing operation monitoring system according to any one of claims 4 to 5 and 7, characterized in that, At least one voltage-to-frequency conversion module is provided before the signal amplification module.
9. The flow-through coiled tubing operation monitoring system according to claim 2, characterized in that, The first power source is a battery pack selected according to the temperature requirements of continuous tubing operation.
10. The flow-through coiled tubing operation monitoring system according to claim 1, characterized in that, The torque range of the overflow load logging tool is 0–1500 N·m, the torque accuracy is ±5% FS, the tension measurement range is -20t to 20t, and the accuracy is ±1.5% FS; the temperature accuracy of the overflow magnetic positioning temperature and pressure logging tool is ±2℃, the temperature response time is less than 0.5s, the magnetic positioning signal-to-noise ratio is greater than 3:1, and the magnetic positioning speed requirement is greater than or equal to 600 m / h; the continuous working time of the overflow storage sub is greater than or equal to 24 hours.