CN115826085A - Electric shock integrated monitoring method and device based on electronic control trace explosive - Google Patents
Electric shock integrated monitoring method and device based on electronic control trace explosive Download PDFInfo
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- CN115826085A CN115826085A CN202211491594.1A CN202211491594A CN115826085A CN 115826085 A CN115826085 A CN 115826085A CN 202211491594 A CN202211491594 A CN 202211491594A CN 115826085 A CN115826085 A CN 115826085A
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Abstract
The invention belongs to the technical field of development of oil fields and dry and hot rocks, and discloses an electric shock integrated monitoring method and device based on an electric control trace explosive, which comprises the following steps: arranging an array observation system on the ground of a drilling fracturing section; supplying power to the shaft to control the trace explosive to explode; sending the electromagnetic signal received by the electromagnetic sensor and the vibration signal received by the detector to a receiving system through a communication cable; calculating the position of the vibration signal through a seismic source positioning algorithm, and calculating the position of the electromagnetic signal through a field source positioning algorithm to obtain the position of the proppant, the fracturing fluid wave and the range; and evaluating the fracturing effect according to the calculated position result. The system supplies human body safety voltage to the shaft and is used for exciting the trace explosive, the trace explosive can explode after receiving the emitted electromagnetic signal and is used as a seismic source to emit a vibration signal, so that the observation on the ground surface is easy, and the monitoring result directly indicates the position of the proppant.
Description
Technical Field
The invention belongs to the technical field of development of oil fields and dry and hot rocks, and particularly relates to an electric shock integrated monitoring method and device based on an electric control trace explosive.
Background
In the current hydraulic pressure monitoring technology, the micro-earthquake and the electromagnetic method are the most common, the physical mechanism of the micro-earthquake is clear, the rock fracture can be identified, but the liquid spread range cannot be judged, and the effective supporting fracture cannot be identified. The physical mechanism of the electromagnetic method is also clear, the liquid spread range can be identified, but the seam network extension rule cannot be identified, and effective supporting cracks cannot be accurately judged. The key to the failure of both microseismic and electromagnetic methods to identify effective propped fractures is the high difficulty in monitoring the proppant. The microseism monitors microseism events caused by stress field changes in the fracturing process, liquid does not necessarily arrive at the position of a positioning event, and the liquid does not necessarily arrive at the position of a propping agent, so that the microseism reconstruction volume is far larger than the effective propping volume. It is difficult to identify low levels of proppant by electromagnetic methods.
In order to solve the above problems, for example, patent CN113625367A discloses an electroseismic integrated monitoring method and system based on electrostrictive material, which introduces a monitoring method based on electrostrictive material. The method integrates the advantages of the frequency characteristic of the electric signal and the positioning event of the micro earthquake, develops the passive earthquake source of the traditional micro earthquake monitoring method into a controllable artificial earthquake source signal, and can accurately identify effective supporting cracks; the propping agents with different frequency characteristics are excited by electric signals to do stretching vibration, so that the repeated transformation effect can be evaluated; the conductive propping agents with different frequency characteristics can be injected into different fracturing layers of the same well, and the simultaneous monitoring of multiple layers can be realized through feeding multi-frequency current signals.
However, a practical proppant direct monitoring technology is not provided, and the microseism technology can infer the position of the proppant by monitoring the position of a crack, so that the technology is an indirect monitoring technology and has weak signals. In addition, the electric method and the electromagnetic method can not indicate the positions of specific cracks and propping agents when monitoring the range of the low-resistance fracturing fluid, and the underground or ground inclination measurement monitoring is indirect monitoring with lower precision.
Disclosure of Invention
The invention aims to provide an electric shock integrated monitoring method and device based on an electric control trace explosive, and aims to solve the problems in the prior art in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric shock integrated monitoring method based on an electronic control trace explosive comprises the following steps: s1, arranging an array observation system on the ground of a drilling fracturing section, wherein the array observation system comprises an electromagnetic sensor, a detector, a communication cable and a receiving system and is in a normal working state; s2, supplying power to the shaft to control the trace explosive to explode; s3, sending the electromagnetic signal received by the electromagnetic sensor and the vibration signal received by the detector to a receiving system through a communication cable; s4, calculating the position of the vibration signal through a seismic source positioning algorithm, and calculating the position of the electromagnetic signal through a field source positioning algorithm to obtain the position of the propping agent, the fracturing fluid wave and the range; and S5, evaluating the fracturing effect according to the calculated position result.
The trace explosive and the propping agent are mixed and enter a fracturing layer together. The electromagnetic sensors and the detectors are respectively provided with a plurality of groups; and a plurality of groups of electromagnetic sensors and detectors are embedded on the ground around the well site of the fracturing well in irregular shapes. The electromagnetic signal and the vibration signal are generated by supplying human body safety voltage to the shaft to excite the trace explosive to explode.
When the array observation system is arranged, the steps are as follows: digging a pit for embedding an electromagnetic sensor and a detector on the ground around a well site; placing an electromagnetic sensor and a detector in a pit and tamping with soil; the electromagnetic sensor and the detector are connected with a receiving system through a communication cable, and the power supply is switched on. The receiving system is a computer loaded with a field source positioning algorithm.
On the other hand, the invention provides an electric shock integrated monitoring device based on an electric control trace explosive, which comprises: a receiving system; the electromagnetic sensor and the detector are connected to the receiving system, and the power supply is used for providing electric support for the receiving system, the electromagnetic sensor and the detector. A signal source generation system; the signal source generating system is used for sending electromagnetic signals and vibration signals received by the power supply magnetic sensor and the detector.
The signal source generating system comprises: the trace explosive package and the propping agent are placed in the fracturing layer; and the electrode is connected in the trace explosive package and used for discharging to excite the trace explosive package to explode. The voltage adopted by the electrodes is lower than the human body safety voltage.
The invention has the technical effects and advantages that: compared with the prior art, the electric shock integrated monitoring method and device based on the electric control trace explosive provided by the invention have the following advantages:
1. according to the invention, human body safety voltage is supplied to the shaft and is used for exciting the trace explosive, the trace explosive can explode after receiving the emitted electromagnetic signal and is used as a seismic source to emit a vibration signal, so that the observation on the ground surface is easy, the position of the propping agent is directly indicated by the monitoring result, and the fracturing monitoring device has the advantages of high safety, low cost, simplicity and convenience in operation and high precision, and comprehensively evaluates the fracturing effect by combining the electromagnetic signal generated by the safety voltage in a fracturing layer.
2. The trace explosive emits stronger vibration signals, so that the observation on the ground is facilitated, the trace explosive is not a propping agent, is mixed with the propping agent and enters a stratum, and has the same distribution condition with the propping agent in a fracturing layer, so that the position of the propping agent can be known by monitoring the position of the trace explosive, sensors are arranged in irregular grids, the construction steps are reduced, the method is suitable for different terrains, and the method can be used for fracturing monitoring of vertical wells and horizontal wells in hot dry rocks and unconventional oil and gas;
3. continuous monitoring can be carried out by controlling different explosion time; meanwhile, the low-resistance signal of the fracturing fluid is utilized to monitor the wave and range of the fracturing fluid, so that the fracturing effect is comprehensively analyzed, the positions of the fracture and the fracturing fluid are obtained, the information is rich, and the analysis of the fracturing effect is facilitated;
4. the sensors and the detectors are distributed in the irregular grids, so that the construction steps are reduced, the method is suitable for different terrains, and can be used for monitoring the fracturing of vertical wells and horizontal wells in hot dry rocks and unconventional oil and gas.
Drawings
FIG. 1 is a flow chart of an electric shock integrated monitoring method based on an electric control trace explosive;
FIG. 2 is a flow chart of the present invention for deploying an array observation system;
FIG. 3 is a block diagram of a monitoring device deployed in a vertical well in an embodiment of the present invention;
fig. 4 is a structural view of a monitoring device arranged in a horizontal well in an embodiment of the present invention.
In the figure: 1. an electromagnetic sensor; 2. a detector; 3. a power source.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment of the invention provides an electric shock integrated monitoring method based on an electric control trace explosive, which comprises the following steps of:
s1, arranging an array observation system on the ground of a drilling fracturing section, wherein the array observation system comprises an electromagnetic sensor 1, a detector 2, a communication cable and a receiving system, and the electromagnetic sensor 1 and the detector 2 are respectively provided with a plurality of groups; the electromagnetic sensors 1 and the detectors 2 are embedded on the ground around the well site of the fracturing well in irregular shapes, and the observation system is in a normal working state;
as shown in fig. 2, when the array observation system is arranged, the steps are as follows:
s1.1, digging pit positions for embedding the electromagnetic sensor 1 and the detector 2 on the ground around a well site;
s1.2, placing the electromagnetic sensor 1 and the detector 2 in a pit position, and tamping with soil;
s1.3, connecting the electromagnetic sensor 1 and the wave detector 2 with a receiving system through a communication cable, and switching on a power supply 3.
And S2, supplying power to the shaft, controlling the trace explosive to explode, mixing the trace explosive and the propping agent, and enabling the mixture to enter a fracturing layer.
S3, sending the electromagnetic signal received by the electromagnetic sensor 1 and the vibration signal received by the wave detector 2 to a receiving system through a communication cable; the source of the electromagnetic signal and the vibration signal is generated by supplying human body safe voltage to a shaft and exciting trace explosive to explode.
S4, calculating the position of the vibration signal through a seismic source positioning algorithm, and calculating the position of the electromagnetic signal through a field source positioning algorithm to obtain the position of the propping agent, the fracturing fluid wave and the range;
and S5, evaluating the fracturing effect according to the calculated position result.
The fracturing monitoring device has the advantages of being high in safety, low in cost, easy and convenient to operate and high in precision, and comprehensively evaluating the fracturing effect by combining the electromagnetic signals generated by the safe voltage at the fracturing layer.
Example 2
The embodiment provides an electric shock integrated monitoring device based on an electric control trace explosive, and is shown in fig. 3 and 4. Wherein fig. 3 shows a state in which the monitoring device is disposed in a vertical well; fig. 4 shows a state in which the monitoring device is arranged in a horizontal well.
Specifically, the method comprises the following steps: a receiving system; the system comprises an electromagnetic sensor 1 and a wave detector 2 connected to the receiving system, and a power supply 3 for providing electric support for the receiving system, the electromagnetic sensor 1 and the wave detector 2. A signal source generation system; the signal source generating system is used for sending out electromagnetic signals and vibration signals received by the power supply magnetic sensor 1 and the wave detector 2.
The trace explosive emits stronger vibration signals, so that the observation on the ground is facilitated, the trace explosive is not a propping agent, is mixed with the propping agent and then enters a stratum, and has the same distribution condition with the propping agent in a fracturing layer, so that the position of the propping agent can be known by monitoring the position of the trace explosive, sensors are arranged on irregular grids, the construction steps are reduced, the method is suitable for different terrains, and the method can be used for fracturing monitoring of vertical wells and horizontal wells in hot dry rocks and unconventional oil and gas.
In some embodiments, the signal source generation system comprises: the trace explosive package and the propping agent are placed in the fracturing layer; and the electrode is connected in the trace explosive package and used for discharging to excite the trace explosive package to explode. The voltage adopted by the electrodes is lower than the human body safety voltage.
Specifically, continuous monitoring can be performed by controlling different explosion times; meanwhile, the low-resistance signal of the fracturing fluid is utilized to monitor the wave and range of the fracturing fluid, so that the fracturing effect is comprehensively analyzed, the positions of the fracture and the fracturing fluid are obtained, the information is rich, and the analysis of the fracturing effect is facilitated. The sensors and the detectors are distributed in the irregular grids, so that the construction steps are reduced, the method is suitable for different terrains, and can be used for monitoring the fracturing of vertical wells and horizontal wells in hot dry rocks and unconventional oil and gas.
As an optional implementation mode, the system also comprises a single chip microcomputer, the single chip microcomputer is communicated with the computer in a serial communication mode, the serial communication is a communication mode for carrying out data transmission according to bits through a data signal line, a ground line, a control line and the like, a data communication program which is represented by an RS232 protocol and is written by VB is used as a middleman to transmit data between the configuration king and the single chip microcomputer, real-time data exchange is conveniently realized by adopting dynamic data exchange DDE, and feedback signals of the electromagnetic sensor 1 and the detector 2 are calculated through a formula to realize online measurement data on a display computer.
Further, the receiving system is a computer loaded with a field source positioning algorithm, and is provided with a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the method in the above embodiment.
The programs described above may be run on a processor or may also be stored in memory (or referred to as computer-readable media), which includes both non-transitory and non-transitory, removable and non-removable media, that implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory computer readable media (trans entity med ia) such as modulated data signals and carrier waves.
These computer programs may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks, and corresponding steps may be implemented by different modules.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. An electric shock integrated monitoring method based on an electronic control trace explosive is characterized by comprising the following steps:
s1, arranging an array observation system on the ground of a drilling fracturing section, wherein the array observation system comprises an electromagnetic sensor, a detector, a communication cable and a receiving system and is in a normal working state;
s2, supplying power to the shaft, and controlling the trace explosive to explode;
s3, sending the electromagnetic signal received by the electromagnetic sensor and the vibration signal received by the detector to a receiving system through a communication cable;
s4, calculating the position of the vibration signal through a seismic source positioning algorithm, and calculating the position of the electromagnetic signal through a field source positioning algorithm to obtain the position of the propping agent, the fracturing fluid wave and the range;
and S5, evaluating the fracturing effect according to the calculated position result.
2. The electric shock integrated monitoring method based on the electric control trace explosive according to claim 1, characterized in that: and mixing the trace explosive and the propping agent, and allowing the mixture to enter a fracturing layer.
3. The electric shock integrated monitoring method based on the electric control trace explosive according to claim 1, characterized in that: the electromagnetic sensors and the detectors are arranged in a plurality of groups;
and a plurality of groups of electromagnetic sensors and detectors are embedded on the ground around the well site of the fracturing well in irregular shapes.
4. The electric shock integrated monitoring method based on the electric control trace explosive according to claim 1, characterized in that: the source of the electromagnetic signal and the vibration signal is generated by supplying human body safe voltage to a shaft and exciting trace explosive to explode.
5. The electric shock integrated monitoring method based on the electric control trace explosive according to claim 1, characterized in that: when the array observation system is arranged, the steps are as follows:
s1.1, digging a pit position for embedding an electromagnetic sensor and a detector on the ground around a well site;
s1.2, placing an electromagnetic sensor and a detector in a pit and tamping with soil;
s1.3, connecting the electromagnetic sensor and the detector with a receiving system through a communication cable, and connecting a power supply.
6. The electric shock integrated monitoring method based on the electric control trace explosive according to claim 5, characterized in that: the receiving system is a computer loaded with a field source positioning algorithm.
7. The utility model provides an electric shock integration monitoring devices based on automatically controlled trace explosive which characterized in that includes:
a receiving system;
electromagnetic sensor and detector connected to said receiving system, and
a power supply for providing electrical support to the receiving system, electromagnetic sensor and detector.
8. The electric shock integrated monitoring device based on the electric control trace explosive is characterized by further comprising: a signal source generation system;
the signal source generating system is used for sending electromagnetic signals and vibration signals received by the power supply magnetic sensor and the detector.
9. The electric shock integrated monitoring device based on the electric control trace explosive according to claim 8, characterized in that: the signal source generating system comprises:
the trace explosive package and the propping agent are placed in the fracturing layer;
and the electrode is connected in the trace explosive package and used for discharging to excite the trace explosive package to explode.
10. The electric shock integrated monitoring device based on the electric control trace explosive as claimed in claim 9, wherein: the voltage adopted by the electrode is lower than the human body safety voltage.
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| CN202211491594.1A CN115826085A (en) | 2022-11-25 | 2022-11-25 | Electric shock integrated monitoring method and device based on electronic control trace explosive |
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| CN202211491594.1A CN115826085A (en) | 2022-11-25 | 2022-11-25 | Electric shock integrated monitoring method and device based on electronic control trace explosive |
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