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CN-121853982-B - Intelligent well completion underground miniature intelligent electrohydraulic composite monitoring system

CN121853982BCN 121853982 BCN121853982 BCN 121853982BCN-121853982-B

Abstract

The invention belongs to the technical field of underground intelligent tools and discloses an intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system which comprises a supporting pipe, a valve body, a flow measuring pipe, a first single-core steel pipe cable sealing joint, a capacitance water content sensor, a multi-core steel pipe cable sealing joint, a first hydraulic pipeline sealing joint, a second single-core steel pipe cable sealing joint, a miniature hydraulic pump, a driving miniature motor, a three-position four-way reversing valve, a main control circuit board, a first temperature and pressure integrated sensor, a second temperature and pressure integrated sensor, a third temperature and pressure integrated sensor, a first ultrasonic sensor and a second ultrasonic sensor.

Inventors

  • WANG YINGRU

Assignees

  • 天津创科蓝能源科技有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (9)

  1. 1. The intelligent well completion underground miniature intelligent electrohydraulic composite monitoring system is characterized by comprising a supporting pipe, a valve body, a flow meter measuring pipe, a first single-core steel pipe cable sealing joint, a capacitance water content sensor, a multi-core steel pipe cable sealing joint, a first hydraulic pipeline sealing joint, a second single-core steel pipe cable sealing joint, a miniature hydraulic pump, a driving miniature motor, a three-position four-way reversing valve, a main control circuit board, a first temperature and pressure integrated sensor, a second temperature and pressure integrated sensor, a third temperature and pressure integrated sensor, a first ultrasonic sensor and a second ultrasonic sensor; The system comprises a main pipe, a valve body, a micro hydraulic pump, a driving micro motor, a three-position four-way reversing valve, a first temperature-pressure integrated sensor, a second temperature-pressure integrated sensor, a third temperature-pressure integrated sensor and a capacitance water content sensor, wherein the main pipe is fixedly connected with the flow measuring pipe; The main control circuit board is respectively and electrically connected with the driving micro motor, the three-position four-way reversing valve, the first temperature and pressure integrated sensor, the second temperature and pressure integrated sensor, the third temperature and pressure integrated sensor, the first ultrasonic sensor, the second ultrasonic sensor and the capacitance water content sensor; The device also comprises a pressure guiding pipe, a fifth communication hole and a seventh communication hole of the flow measuring pipe are respectively inserted into the supporting pipe and form static seal through two O-shaped sealing rings, the fifth communication hole is communicated with the fourth communication hole of the support pipe, the seventh communication hole is communicated with the sixth communication hole of the support pipe, and the flow measuring pipe is fixed on the support pipe through thirteen first socket head cap screws; The pressure guiding pipe is inserted into the jack of the pipe support and forms static seal through two O-shaped sealing rings, a filter screen is arranged in the bottom hole of the pressure guiding pipe, the center hole of the pressure guiding pipe is communicated with the second communication hole of the pipe support, the second communication hole is communicated with the first communication hole of the pipe support, the first communication hole is communicated with the center pipe of the pipe support, the outer side end of the first communication hole of the pipe support is sealed through a first NPT sealing plug, the upper end of the pressure guiding pipe is inserted into the jack of the valve body and forms static seal through two O-shaped sealing rings, the center hole of the pressure guiding pipe is communicated with the third communication hole of the valve body, and the third communication hole is communicated with the second pressure guiding hole of the valve body.
  2. 2. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 1, wherein the valve body is provided with a first hydraulic oil through hole, a second hydraulic oil through hole, a third hydraulic oil through hole, a fourth hydraulic oil through hole, a fifth hydraulic oil through hole, a sixth hydraulic oil through hole, a seventh hydraulic oil through hole, an eighth hydraulic oil through hole, a ninth hydraulic oil through hole, a tenth hydraulic oil through hole, an eleventh hydraulic oil through hole, a twelfth hydraulic oil through hole and a thirteenth hydraulic oil through hole, the second hydraulic oil through hole is communicated with the first hydraulic oil through hole, the fifth hydraulic oil through hole is communicated with the sixth hydraulic oil through hole, the third hydraulic oil through hole is communicated with the seventh hydraulic oil through hole, the seventh hydraulic oil through hole is communicated with the first pressure guiding hole, the ninth hydraulic oil through hole is communicated with the fourth hydraulic oil through hole and the oil storage tank, the tenth hydraulic oil through hole is communicated with the third hydraulic oil through hole and the oil filling cavity, and the twelfth hydraulic oil through hole is communicated with the fourth through hole, the first annular groove, the second annular groove and the oil return cavity; The valve body is further provided with a first wire passing groove, a second wire passing groove, a third wire passing groove, a fourth wire passing groove, a fifth wire passing groove, a wire storage hole, a first wire passing hole and a second wire passing hole, the first wire passing groove and the fifth wire passing groove are all communicated with the wire storage hole, the fourth wire passing groove and the fifth wire passing groove are all communicated with the circuit board bin, the third wire passing groove is communicated with the first annular cavity, and the first annular cavity is communicated with the first wire passing groove.
  3. 3. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 2, further comprising a high-pressure injection pipe and a first guide top ring, wherein a plug of the high-pressure injection pipe is inserted into an oil injection cavity and forms a static seal through two O-shaped sealing rings, the oil injection cavity is communicated with a tenth hydraulic oil through hole, and the other side of the high-pressure injection pipe is connected with an oil outlet of a miniature hydraulic pump through a flat thread and forms a static seal through one O-shaped sealing ring; The other end of the miniature hydraulic pump is connected with the fixing frame through flat threads, and the driving miniature motor is fixed on the fixing frame through three inner hexagon screws; the first guide top ring is inserted into a first guide groove of an oil storage tank of the valve body and tightly pushes against the driving micro motor, the end face of the oil storage tank is sealed through a second sealing plug, and the second sealing plug is fixed through flat threads and forms static seal through three O-shaped sealing rings.
  4. 4. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 3, wherein the main control circuit board is fixed on the circuit board supporting plate through four screws, the circuit board supporting plate is inserted into the circuit board bin along the guide rail of the first transition sealing plug, and the first transition sealing plug is arranged on the end face of the circuit board bin of the valve body through flat threads and forms a static seal through two O-shaped sealing rings; The main control circuit board is fixedly provided with a rectangular connector male head, a rectangular connector female head is fixedly arranged on the first transition sealing plug, the rectangular connector male head is inserted into the rectangular connector female head, the first single-core steel tube cable sealing joint is arranged on the first transition sealing plug through flat threads and forms static sealing through two O-shaped sealing rings, the single-core steel tube input cable is inserted into the first single-core steel tube cable sealing joint for sealing and fixing, the first single-core power sealing plug is further fixedly arranged on the first transition sealing plug, the copper core of the single-core steel tube input cable is connected with the copper core of the first single-core power sealing plug, and the copper core at the other end of the first single-core power sealing plug is connected with the rectangular connector female head through a single-core flexible cable.
  5. 5. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 4, wherein a first temperature-pressure integrated sensor is inserted into a first sensor mounting hole of a valve body and forms a static seal through an O-shaped sealing ring, a second guide top ring is arranged in the first sensor mounting hole, the first sensor mounting hole is sealed through a fourth sealing plug, the fourth sealing plug is fixed through flat threads and forms the static seal on two sides of a second annular groove through six O-shaped sealing rings; the second temperature and pressure integrated sensor is inserted into a second sensor mounting hole of the valve body and forms static seal through an O-shaped sealing ring, a third guide top ring is arranged in the second sensor mounting hole, the third guide top ring is inserted along a second guide groove, the second guide groove is communicated with an annular pressure guide hole on the valve body, the second sensor mounting hole is sealed through a sixth sealing plug, and the sixth sealing plug is fixed through flat threads and forms static seal through three O-shaped sealing rings; the third temperature and pressure integrated sensor is inserted into a symmetrical sensor mounting hole of the valve body and forms static seal through an O-shaped sealing ring, a fourth guide top ring is arranged in the symmetrical sensor mounting hole and is inserted along a third guide groove, the third guide groove is communicated with the third communication hole, the symmetrical sensor mounting hole is sealed through a third transition sealing plug, and the third transition sealing plug is mounted through flat threads and forms static seal through the three O-shaped sealing rings.
  6. 6. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 5, wherein the first ultrasonic sensor and the second ultrasonic sensor are arranged on two sides of a flow measuring hole of a flow measuring pipe through flat threads, and respectively form static seals through three O-shaped sealing rings, two ends of the flow measuring hole are respectively sealed through a seventh sealing plug and an eighth sealing plug, and the seventh sealing plug and the eighth sealing plug are respectively arranged through flat threads and respectively form the static seals through three O-shaped sealing rings; The boss of the flow meter measuring tube is inserted into the jack of the valve body and forms static seal through the two O-shaped sealing rings, a third wire passing hole on the flow meter measuring tube is communicated with a second wire passing hole of the valve body, and the second wire passing hole is communicated with a second wire passing slot of the third guide top ring.
  7. 7. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 6, wherein the communication and power supply flexible cable of the second ultrasonic sensor sequentially passes through the second wire passing cavity, the first wire guide hole, the third wire passing cavity and the second wire guide hole to enter the first wire passing cavity, then passes through the third wire guide hole and the second wire guide hole together with the communication and power supply flexible cable of the first ultrasonic sensor, and then passes through the second wire passing notch of the annular pressure guide hole, the third wire passing notch and the fourth wire passing groove of the valve body to be connected with the female head of the rectangular connector; The communication and power supply flexible cable of the first temperature and pressure integrated sensor sequentially passes through a fourth wire passing notch, a second wire passing hole, a first wire passing hole, a second wire passing groove, a first annular cavity, a first wire passing groove, a wire storage hole and a fifth wire passing groove of the second guide top ring to be connected with the rectangular connector bus head; the power supply flexible cable for driving the micro motor sequentially passes through the first wire passing notch of the first guide top ring, the third wire passing groove of the valve body, the first annular cavity, the first wire passing groove, the wire storage hole and the fifth wire passing groove to be connected with the rectangular connector bus head; The power supply flexible cable of the three-position four-way reversing valve sequentially passes through the first annular cavity, the first wire passing groove, the wire storage hole and the fifth wire passing groove of the valve body to be connected with the rectangular connector bus head; The communication and power supply flexible cable of the capacitance water content sensor passes through the wire storage hole of the valve body and the fifth wire passing groove to be connected with the female head of the rectangular connector.
  8. 8. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 1, further comprising an overflow valve, wherein the overflow valve is inserted into an overflow hole of the valve body, the overflow hole is sealed by a first sealing plug, and the first sealing plug is fixed by flat threads and forms a static seal by two O-shaped sealing rings; The tenth hydraulic oil through hole is communicated with the third hydraulic oil through hole, the seventh hydraulic oil through hole and the inlet of the overflow valve, the outlet of the overflow valve is communicated with the first radial through hole of the first sealing plug, the first radial through hole is communicated with the first annular groove, the one-way valve is fixed in the first communication cavity through flat thread sealing, the sixth hydraulic oil through hole is communicated with the first communication cavity, the first communication cavity is sealed through the third sealing plug, and the third sealing plug is fixed through flat thread and forms static sealing with the first pressure guiding hole through two O-shaped sealing rings.
  9. 9. The intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system according to claim 1, wherein the main control circuit board is integrated with a power supply module, a single-core cable communication module, an electromagnetic reversing valve control module, an underground hydraulic power source control module, a displacement signal acquisition universal module, a capacitance water content signal acquisition module, an ultrasonic flow signal acquisition module and a temperature and pressure signal acquisition module.

Description

Intelligent well completion underground miniature intelligent electrohydraulic composite monitoring system Technical Field The invention relates to the technical field of underground intelligent tools, in particular to an intelligent well completion underground miniature intelligent electro-hydraulic composite monitoring system. Background Because hydraulic drive has the advantages of strong thrust and stable operation, the hydraulic control type underground intelligent tool is mainly driven by hydraulic drive at present. The commonly used hydraulic control type intelligent well completion system in China mainly adopts three hydraulic control modes of an N+1 type, a digital decoding type and underground electric control hydraulic reversing type, however, the modes have obvious defects: firstly, an explosion-proof hydraulic control cabinet with complex structure, huge volume and high cost is required to be arranged on the ground, secondly, a hydraulic pipeline with a plurality of kilometers is required to be put into a shaft from the ground, the pipeline is high in cost, and the pipeline is easy to wear and puncture in the process of being put into the shaft, so that the whole intelligent well completion system is invalid; thirdly, the friction resistance is extremely high when hydraulic oil flows in a long-distance pipeline, a high-power hydraulic pump is required to be equipped, the volume of a hydraulic control cabinet is further increased, and the wellhead installation is inconvenient; Fourthly, the transmission delay of the hydraulic oil pressure control signal can reach a plurality of minutes, so that the underground hydraulic control tool is difficult to accurately control; Fifthly, the matched pressure and temperature monitoring system is large in size, difficult to put into a shaft, and incapable of accurately and optimally regulating and controlling the output of each production layer due to lack of underground flow meters. The defects seriously restrict the application and development of the intelligent well completion technology in oil and gas fields in China. Therefore, we propose an intelligent well completion underground miniature intelligent electrohydraulic composite monitoring system. Disclosure of Invention It is an object of the present invention to provide an intelligent completion downhole miniature intelligent electro-hydraulic composite monitoring system that addresses or at least alleviates one or more of the above-identified problems and other problems of the prior art. In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps: An intelligent well completion underground miniature intelligent electrohydraulic composite monitoring system comprises a supporting pipe, a valve body, a flow measuring pipe, a first single-core steel pipe cable sealing joint, a capacitance water content sensor, a multi-core steel pipe cable sealing joint, a first hydraulic pipeline sealing joint, a second single-core steel pipe cable sealing joint, a miniature hydraulic pump, a driving miniature motor, a three-position four-way reversing valve, a main control circuit board, a first temperature and pressure integrated sensor, a second temperature and pressure integrated sensor, a third temperature and pressure integrated sensor, a first ultrasonic sensor and a second ultrasonic sensor; The flow measuring tube is fixedly connected with the host, and the internal channel of the flow measuring tube is communicated with the internal channel of the host; the valve body is arranged on the supporting pipe, the miniature hydraulic pump, the driving miniature motor, the three-position four-way reversing valve and the main control circuit board are integrated in the valve body, the driving miniature motor is in transmission connection with the miniature hydraulic pump through the coupler, and the three-position four-way reversing valve is communicated with the miniature hydraulic pump through the hydraulic channel; the first temperature and pressure integrated sensor, the second temperature and pressure integrated sensor, the third temperature and pressure integrated sensor and the capacitance water content sensor are all arranged on the valve body; The first ultrasonic sensor and the second ultrasonic sensor are both arranged on the flow measuring tube; The main control circuit board is respectively and electrically connected with the driving micro motor, the three-position four-way reversing valve, the first temperature and pressure integrated sensor, the second temperature and pressure integrated sensor, the third temperature and pressure integrated sensor, the first ultrasonic sensor, the second ultrasonic sensor and the capacitor water content sensor; the first single-core steel pipe cable sealing joint, the second single-core steel pipe cable sealing joint and the multicore steel pipe cable sealing joint are all installed on the valve body, and the fi