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CN-121990655-A - Automatic cleaning and purifying system and method for magnetic substances of drilling fluid

CN121990655ACN 121990655 ACN121990655 ACN 121990655ACN-121990655-A

Abstract

A drilling fluid magnetic substance automatic cleaning and purifying system and method relate to the technical field of drilling and solve the problem that the normal work is affected by low temperature in winter construction due to the fact that underground tool instruments are out of order due to high magnetic substance content in the existing drilling fluid. The system comprises a supporting and protecting support, wherein an explosion-proof control cabinet is arranged at the top of the supporting and protecting support, a magnetic substance removing unit is arranged in the supporting and protecting support, a recovery unit is arranged at the lower part of the magnetic substance removing unit and is positioned at the bottom of the supporting and protecting support, the recovery unit is used for recovering removed substances of the magnetic substance removing unit, the magnetic substance removing unit and the recovery unit form a magnetic substance treatment device, and the method is that drilling fluid flowing in a drilling fluid flow channel in real time is purified through the magnetic substance treatment device. The drilling fluid magnetic substance automatic cleaning and purifying system can remove magnetic substances in the drilling fluid, reduce the failure rate of tool instruments, increase the anti-freezing heating mode and improve the operation efficiency.

Inventors

  • Meng Yuge
  • YUAN LEI
  • ZHAO ZHIXUE
  • ZHANG ZHENHUA
  • CHEN SHAOYUN
  • SUN SHIXUN
  • YUAN RUI
  • CHEN KAI

Assignees

  • 大庆钻探工程有限公司
  • 中国石油天然气集团有限公司

Dates

Publication Date
20260508
Application Date
20250821

Claims (12)

  1. 1. The automatic cleaning and purifying system for the magnetic substances of the drilling fluid is characterized by comprising a supporting and protecting bracket (20); An explosion-proof control cabinet (9) is arranged at the top of the supporting and protecting bracket (20), and a magnetic substance removing unit is arranged in the supporting and protecting bracket; The lower part of the magnetic substance removing unit is provided with a recovery unit; the recovery unit is positioned at the bottom of the supporting protection bracket and is used for recovering the removed objects of the magnetic substance removing unit; The magnetic substance removing unit and the recovery unit form a magnetic substance processing device.
  2. 2. The automatic cleaning and purifying system for magnetic substances of drilling fluid according to claim 1, wherein the supporting and protecting bracket (20) is of an inverted T shape, comprises an upper vertical plate and a bottom horizontal plate, wherein the bottom horizontal plate is a horizontal groove plate, the groove holes of the two side horizontal groove plates are oppositely formed in the inner sides of the groove plates, and the inner sides of the two side vertical plates are oppositely formed with grooves; The drilling fluid flow channel (18) is a square pipeline with two ends and an opening at the top, the supporting and protecting bracket is arranged at the upper part of the drilling fluid flow channel, and the bottom of the recovery unit corresponds to the opening at the upper part of the drilling fluid flow channel.
  3. 3. The drilling fluid magnetic substance automatic cleaning and purifying system is characterized in that the magnetic substance cleaning unit comprises parallel plates which are arranged in an up-down opposite mode, wherein the parallel plates are respectively an upper moving plate (17) and a lower shearing plate (6), a circular channel is formed in the shearing plate (6), a strong magnetic rod (4) penetrates through the channel, a plurality of threaded round holes are formed in the moving plate (17), the top end of the strong magnetic rod (4) is in threaded connection with the round holes in the moving plate, the lower end of the strong magnetic rod (4) can move up and down in the channel of the shearing plate (6), and the moving plate (17) is connected with the moving unit.
  4. 4. The automatic cleaning and purifying system for magnetic substances of drilling fluid according to claim 3, wherein the moving unit comprises two air cylinders A (3), and the two air cylinders A (3) are respectively connected with two opposite sides of the moving plate (17) through sliding blocks; The two cylinders A (3) are arranged in vertical plate grooves of the supporting protective bracket (20), and two sides of the shearing plate (6) are connected to the vertical plates of the supporting protective bracket.
  5. 5. The automatic cleaning and purifying system for magnetic substances of drilling fluid according to claim 4, wherein the recovery unit comprises a recovery tray (8), the recovery tray (8) is arranged between the horizontal groove plates at the bottom of the supporting and protecting bracket, and the recovery tray (8) is connected with the front-back moving unit.
  6. 6. The automatic cleaning and purifying system for the magnetic substances of the drilling fluid according to claim 5, wherein the front-back moving unit connected with the recovery tray (8) comprises a pair of air cylinders B (7), the air cylinders B (7) are arranged in horizontal groove plate slots of the supporting and protecting bracket, the rear part of the recovery tray (8) is connected with a sliding rod (19) on one side, opposite to an opening of a drilling fluid flow channel (18), of the recovery tray, and two ends of the sliding rod (19) are respectively connected with sliding blocks of the air cylinders B (7) to enable the recovery tray to move forwards and backwards.
  7. 7. The automatic cleaning and purifying system for the drilling fluid magnetic substances is characterized in that a partition plate is arranged in the middle of an explosion-proof control cabinet (9), a main control circuit module (10), an isolation grid (11), a heating regulating valve (14) and a heating element (15) are arranged in a space on one side of the partition plate, and a power supply module (12), a position sensor (13) and a temperature sensor (16) are arranged in a space on the other side of the partition plate.
  8. 8. The drilling fluid magnetic substance automatic cleaning and purifying system is characterized in that a heating regulating valve (14) and a heating element (15) are arranged on a bottom plate of an explosion-proof control cabinet, a supporting frame is arranged on the upper portion of the heating regulating valve (14) and the upper portion of the heating element (15), a main control circuit module (10) and an isolation grid (11) are arranged on the supporting frame, and a power module (12), a position sensor (13) and a temperature sensor (16) are fixedly arranged on the bottom plate of the explosion-proof control cabinet respectively.
  9. 9. The system of claim 7, wherein the power module (12) is a voltage conversion device, and the power module is used for supplying power to the device and converting 220V AC voltage into 24V DC voltage.
  10. 10. A method for automatically cleaning and purifying magnetic substances of drilling fluid by using the system as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps: s1, during drilling construction, openings at two ends of a drilling fluid flow channel are respectively connected with a vibrating screen and a drilling fluid tank, and drilling fluid returned from the well flows in the drilling fluid flow channel in real time; S2, fixedly mounting two groups of magnetic substance treatment devices at the upper part of the drilling fluid flow channel, setting starting time intervals of the two groups of devices and immersion time of the strong magnetic rod in the drilling fluid, and realizing that the strong magnetic rod is always kept in the drilling fluid flow channel to adsorb magnetic substances through intermittent operation of the two groups of devices; S3, the two sets of magnetic substance treatment devices are connected with a power supply and an air source, the device is started through a power supply switch (2), when the movable plate (17) moves downwards to the shearing plate (6), the lower part of the strong magnetic rod (4) is immersed into drilling fluid in a drilling fluid flow channel, and the movable plate is lifted up after the lower part stays for a set time; in the lifting process of the movable plate, when the position sensor (13) detects that the movable plate moves to a quarter height from the top end of the supporting protection bracket (20), a signal is transmitted to the main control circuit module (10), and the main control circuit module (10) feeds back a signal of backward movement of the recovery tray to the cylinder B (7) after receiving the signal, so that the recovery tray (8) moves backward to enter the position right below the device for preparation for recovery; When the position sensor detects that the recovery tray moves to the position right below the device, a signal is fed back to the main control circuit module (10), the main control circuit module continuously lifts the movable plate (17) to the topmost signal of the support protection bracket (20) and transmits the signal to the air cylinder A (3), and at the moment, in the lifting process of the strong magnetic rod (4), the magnetic substances adsorbed by the strong magnetic rod (4) are removed under the cooperation of the shearing plate (6) and the dust ring (5), and the removed magnetic substances fall onto the recovery tray; The movable plate (17) continues to move upwards, when the position sensor (13) detects that the movable plate moves to the top end of the bracket, a signal is fed back to the main control circuit module (10), and the main control circuit module (10) feeds back the hovering time of the movable plate when the movable plate is at the top end of the bracket and the signal of the forward movement of the recovery tray to the cylinder B (7); when the position sensor (13) detects that the recovery tray moves to the forefront end, a signal is fed back to the main control circuit module, the main control circuit module feeds back a downward movement signal of the moving plate to the air cylinder A (3) so that the strong magnetic rod is immersed in drilling fluid, and the moving plate moves up and down in a cyclic way, so that the automatic cleaning and purification of the magnetic substances of the drilling fluid are realized.
  11. 11. The method of claim 10, wherein the heating element (15) is preset to a temperature set value of 0-10 degrees in winter construction, the power supply switch (2) starts the system, the heating regulating valve (14) starts to regulate the temperature of the heating element (15) to rise to the set value, the temperature sensor (16) detects the internal temperature of the explosion-proof control cabinet in real time and feeds back the internal temperature to the main control circuit module (10), automatic real-time detection and regulation control of the temperature are realized, the internal temperature of the explosion-proof control cabinet is always kept at the set constant temperature, and the outdoor antifreezing and heat preservation effects of the system in winter are achieved.
  12. 12. The method of claim 10, wherein the two sets of devices are set to be started for 5-10 minutes, the strong magnetic rod is set to be immersed in the drilling fluid for 15-20 minutes, and the moving plate hovers for 5-10 seconds when moving to the top of the support.

Description

Automatic cleaning and purifying system and method for magnetic substances of drilling fluid Technical Field The invention relates to the technical field of drilling, in particular to a drilling fluid magnetic substance automatic cleaning and purifying system and method. Background At present, the domestic magnetic substance removing device is mainly applied to the coal mining industry, and the device for cleaning the magnetic substances in the drilling fluid in the drilling field is seldom developed. The electromagnetic slurry demagnetizer can realize the functions of full-automatic feeding and discharging, removing simple substance iron and the like, but the device principle adopts an electromagnetic generation magnetic mode, so that the safety protection level of the drilling site cannot be effectively ensured, the treatment capacity is 20m < 3 >/h, the displacement is smaller, the device is mainly applied to the coal mining industry, the treatment capacity of a drilling fluid ferromagnetic substance removing device can reach 90m < 3 >/h, and the drilling fluid is required to be fed into the device by a pump, so that the requirement on the pump is high for high-displacement work. The winter construction in the north usually adopts the construction of a heat preservation shed for freezing prevention and heat preservation, the heat preservation effect is not good. Disclosure of Invention The invention provides a drilling fluid magnetic substance automatic cleaning and purifying system, aiming at the problem that the normal work is affected by the low temperature of underground tool instruments in winter construction due to the high content of magnetic substances in the existing drilling fluid in the background technology. The drilling fluid magnetic substance automatic cleaning and purifying system can remove magnetic substances in the drilling fluid, reduce the failure rate of tool instruments, increase the anti-freezing heating mode and improve the operation efficiency. The invention solves the problems by the following technical proposal that the drilling fluid magnetic substance automatic cleaning and purifying system comprises a supporting and protecting bracket; the top of the supporting and protecting bracket is provided with an explosion-proof control cabinet, and the supporting and protecting bracket is internally provided with a magnetic substance removing unit; The lower part of the magnetic substance removing unit is provided with a recovery unit; the recovery unit is positioned at the bottom of the supporting protection bracket and is used for recovering the removed objects of the magnetic substance removing unit; The magnetic substance removing unit and the recovery unit form a magnetic substance processing device. The support protection bracket is in an inverted T shape and comprises an upper vertical plate and a bottom horizontal plate, wherein the bottom horizontal plate is a horizontal groove plate, groove holes of the two side horizontal groove plates are oppositely formed in the inner side of the groove plate, and grooves are formed in the two side vertical plates relatively; The drilling fluid flow channel is a square pipeline with two ends and an opening at the top, the supporting and protecting bracket is arranged at the upper part of the drilling fluid flow channel, and the bottom of the recovery unit corresponds to the opening at the upper part of the drilling fluid flow channel. The magnetic substance removing unit comprises a parallel plate which is arranged up and down oppositely, wherein the parallel plate is respectively a moving plate at the upper part and a shearing plate at the lower part, a circular channel is formed in the shearing plate, a strong magnetic rod penetrates through the channel, a plurality of threaded round holes are formed in the moving plate, the top ends of the strong magnetic rods are in threaded connection with the round holes in the moving plate, the lower ends of the strong magnetic rods can move up and down in the channel of the shearing plate, and the moving plate is connected with the moving unit. Further, the moving unit comprises two air cylinders A, wherein the two air cylinders A are respectively connected with two opposite sides of the moving plate through sliding blocks; the two cylinders A are arranged in vertical plate grooves of the supporting protective bracket, and two sides of the shearing plate are connected to the vertical plates of the supporting protective bracket. Further, the recovery unit comprises a recovery tray, the recovery tray is arranged between the horizontal groove plates at the bottom of the support protection bracket, and the recovery tray is connected with the front-back moving unit. Further, the front-back moving unit connected with the recovery tray comprises a pair of air cylinders B, wherein the air cylinders B are arranged in slots of a horizontal trough plate of the supporting and protecting bracket, the rear pa