Slurry scrap iron removing device and using method thereof

Abstract

The invention relates to the technical field of slurry scrap iron removing devices, in particular to a slurry scrap iron removing device and a using method thereof.The slurry scrap iron removing device comprises a slurry liquid inlet pipe, an upper flow guide chamber, a box, a lower flow guide chamber, a slurry liquid outlet pipe and an electromagnet, the upper flow guide chamber is trapezoidal, the upper end of the upper flow guide chamber communicates with the slurry liquid inlet pipe, and a plurality of upper flow guide holes penetrating vertically are formed in the lower end of the upper flow guide chamber; a box body is mounted at the lower end of the upper flow guide chamber, the upper part and the lower part of the box body are open, a plurality of electromagnets are horizontally arranged in the box body at intervals up and down, a lower flow guide chamber is mounted at the lower end of the box body and is inverted trapezoidal, a plurality of lower flow guide holes which are through up and down are formed in the upper side of the lower flow guide chamber, and the lower end of the lower flow guide chamber is communicated with a slurry outlet pipe. The device is reasonable and compact in structure and convenient to use, slurry can uniformly pass through the upper flow guide holes and then flow to the electromagnets through the upper flow guide chamber, the treatment time of iron chips and other magnetic substances in the slurry can be prolonged by passing the slurry through the electromagnets, and the slurry performance is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of slurry iron chip removal devices, and particularly relates to a slurry iron chip removal device and a use method thereof. Background Art

[0002] During the drilling process, a large amount of fine iron filings will be generated in the drilling fluid due to the presence of metal elements such as iron, nickel, and cobalt in the formation, as well as drill bit wear, open hole sidetracking, and casing window sidetracking. Due to the recycling of mud, the fine iron filings in it will have an adverse effect on mud treatment and supply equipment such as mud pumps, causing failures and shortening their lifespans. At the same time, the iron filings in the mud will also change the physical properties of the drilling fluid and affect normal operations. Therefore, the removal of iron filings in the formation mud is an important task before drilling construction. If the iron filings and other magnetic substances in the mud are not completely removed, the instrument cannot work properly, which will bring huge losses to all parties involved in the construction. Taking the common downhole equipment MWD / LWD as an example, the specific manifestations are: ① Magnetic materials enter the pulse generator rotor and destroy the pulse generator; ② Iron filings enter the mushroom head and puncture the rubber shoe of the pulse generator; ③ A large amount of iron filings enter the stator and block the stator; ④ A large amount of iron filings accumulate at the orifice plate, causing the orifice plate to rupture and fall off due to excessive pressure, and at the same time causing the pulse generator assembly to be destroyed; ⑤ The water holes of various downhole drilling tools are easily blocked, resulting in frequent drilling operations; ⑥ After a large amount of iron filings enter the motor, they block or puncture the power drilling tool, which is easy to cause complex situations or downhole accidents.

[0003] Currently, only a box with a built-in magnetic bar is set behind the vibrating screen. When the mud passes through this box, the iron filings are adsorbed by the magnetic bar. The magnetic bar is manually taken out at regular intervals to remove the iron filings. The magnetic material in the mud is not fully adsorbed, and the iron filings are manually removed, resulting in low mud circulation efficiency. Summary of the invention

[0004] The present invention provides a mud iron chip removal device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of insufficient iron chip removal, time-consuming and labor-intensive, and low construction efficiency in the prior mud iron chip removal device.

[0005] One of the technical solutions of the present invention is achieved through the following measures: a mud iron chip removal device, including a mud inlet pipe, an upper guide chamber, a box body, a lower guide chamber, a mud outlet pipe, and an electromagnet. The upper guide chamber is trapezoidal, the upper end of the upper guide chamber is connected to the mud inlet pipe, the lower end of the upper guide chamber is provided with a plurality of upper guide holes that pass through the upper and lower ends, the lower end of the upper guide chamber is installed with a box body, the box body is opened up and down, and a plurality of electromagnets are horizontally arranged at intervals in the box body, the lower end of the box body is installed with a lower guide chamber, the lower guide chamber is in an inverted trapezoidal shape, a plurality of lower guide holes that pass through the upper and lower ends are provided on the upper side of the lower guide chamber, and the lower end of the lower guide chamber is connected with the mud outlet pipe.

[0006] The following are further optimizations and / or improvements to the above technical solutions: The above may also include a cleaning liquid inlet pipe and a cleaning liquid outlet pipe. The upper end of the upper guide chamber is connected to the cleaning liquid inlet pipe, and the lower end of the lower guide chamber is connected to the cleaning liquid outlet pipe.

[0007] The above may also include a remote control center, a mud pump, a cleaning pump, a liquid inlet solenoid valve and a liquid outlet solenoid valve. The remote control center is connected to the mud pump, the cleaning pump, the liquid inlet solenoid valve and the liquid outlet solenoid valve respectively. The mud inlet pipe is connected to the mud pump, the cleaning inlet pipe is connected to the cleaning pump, the mud inlet pipe and the cleaning inlet pipe are connected to the liquid inlet solenoid valve, the mud outlet pipe and the cleaning outlet pipe are connected to the liquid outlet solenoid valve, the mud outlet pipe outlet is connected to the mud pool, and the cleaning outlet pipe outlet is connected to the waste liquid pool.

[0008] An electromagnet protection sleeve may be provided on the outer side of each electromagnet.

[0009] The electromagnets can be staggered in the box, with intervals of 20 mm to 50 mm between the electromagnets.

[0010] The second technical solution of the present invention is achieved through the following measures: a method for using a mud iron removal device, which is carried out according to the following method, wherein two groups of mud iron removal devices are set, and when the first group of mud iron removal devices is performing mud iron removal operations, the second group of mud iron removal devices is performing cleaning operations, and the remote control center controls the two groups of mud iron removal devices to alternately perform mud iron removal operations and cleaning operations, and the remote control center controls the liquid inlet solenoid valve and the liquid outlet solenoid valve to select the iron removal operation or the cleaning operation; the specific steps of the mud iron removal operation are that the mud is connected to the mud liquid inlet pipe after passing through the solid control system from the wellbore, and the mud enters the upper diversion chamber and flows downward into the box evenly through the upper diversion hole. The mud flows from top to bottom through the electromagnet protection sleeves at different positions. After the electromagnet is energized, the electromagnet protection sleeve absorbs the magnetic material in the mud. After passing through the electromagnet protection sleeve, the mud flows out from the mud outlet pipe through the lower guide hole. The mud after iron chips are removed enters the mud pool for recycling. After running for a certain period of time, the cleaning operation begins. The cleaning liquid enters the upper guide chamber from the cleaning liquid inlet pipe and enters the box body through the upper guide hole. The electromagnet is powered off, and the magnetic material can no longer be absorbed. The electromagnet protection sleeve is kept clean under the flushing of the cleaning liquid. After the cleaning liquid flows out from the lower guide hole, it enters the waste liquid pool through the cleaning liquid outlet pipe to collect the magnetic material and waste liquid, completing the iron chip removal and cleaning operations.

[0011] The invention has a reasonable and compact structure and is easy to use. The upper guide chamber allows the mud to evenly pass through the upper guide hole and then flow to the electromagnet. The mud passing through a plurality of electromagnets can increase the processing time of magnetic materials such as iron filings in the mud and ensure the mud performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] AttachedFigure 1 It is a schematic diagram of the main structure of an embodiment of the present invention.

[0013] Attached Figure 2 For attachment Figure 1 Schematic diagram of the cross-sectional three-dimensional structure.

[0014] Attached Figure 3 For attachment Figure 1 Schematic diagram of the three-dimensional structure of the middle and upper diversion chamber.

[0015] The codes in the attached drawings are: 1 is a mud inlet pipe, 2 is a cleaning inlet pipe, 3 is an upper guide chamber, 4 is a box body, 5 is a lower guide chamber, 6 is a mud outlet pipe, 7 is a cleaning outlet pipe, 8 is an electromagnet, and 9 is an electromagnet protection sleeve. DETAILED DESCRIPTION

[0016] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0017] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0018] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As attached Figure 1 , 2 As shown in Figure 3, the mud iron chip removal device includes a mud inlet pipe 1, an upper guide chamber 3, a box body 4, a lower guide chamber 5, a mud outlet pipe 6, and an electromagnet 8. The upper guide chamber 3 is trapezoidal, and the upper end of the upper guide chamber 3 is connected with the mud inlet pipe 1. The lower end of the upper guide chamber 3 is provided with a plurality of upper guide holes that pass through the upper and lower parts. The lower end of the upper guide chamber 3 is installed with a box body 4, which is open at the upper and lower parts. A plurality of electromagnets 8 are horizontally arranged at intervals in the box body 4 at the upper and lower parts. The lower guide chamber 5 is installed at the lower end of the box body 4. The lower guide chamber 5 is inverted trapezoidal, and a plurality of lower guide holes that pass through the upper and lower parts are provided on the upper side of the lower guide chamber 5. The lower end of the lower guide chamber 5 is connected with the mud outlet pipe 6.

[0019] When in use, the upper guide chamber 3 is trapezoidal and can disperse the mud, so that the mud flows out evenly from the upper guide hole and falls evenly on the electromagnet 8, which can significantly increase the processing time of magnetic materials such as iron filings in the mud, greatly reduce the iron filings content in the mud, ensure the mud performance, and then the mud enters the mud pool through the mud outlet pipe 6, and the mud can be recycled. The present invention can increase the mud processing time, fully absorb magnetic materials such as iron filings, absorb more thoroughly, and reduce safety hazards.

[0020] The above-mentioned slurry iron chip removal device can be further optimized and / or improved according to actual needs: Embodiment 2: As attached Figure 1 , 2 As shown in , 3 , it also includes a cleaning liquid inlet pipe 2 and a cleaning liquid outlet pipe 7 . The upper end of the upper guide chamber 3 is connected to the cleaning liquid inlet pipe 2 , and the lower end of the lower guide chamber 5 is connected to the cleaning liquid outlet pipe 7 .

[0021] By separately arranging the cleaning liquid inlet pipe 2 and the cleaning liquid outlet pipe 7 to perform cleaning operations, the residual cleaning liquid in the mud can be reduced.

[0022] Embodiment 3: As attached Figure 1 , 2 As shown in , 3, it also includes a remote control center, a mud pump, a cleaning pump, a liquid inlet solenoid valve and a liquid outlet solenoid valve. The remote control center is connected to the mud pump, the cleaning pump, the liquid inlet solenoid valve and the liquid outlet solenoid valve respectively. The mud inlet pipe 1 is connected to the mud pump, the cleaning inlet pipe 2 is connected to the cleaning pump, the mud inlet pipe 1 and the cleaning inlet pipe 2 are connected to the liquid inlet solenoid valve, the mud outlet pipe 6 and the cleaning outlet pipe 7 are connected to the liquid outlet solenoid valve, the outlet of the mud outlet pipe 6 is connected to the mud pool, and the outlet of the cleaning outlet pipe 7 is connected to the waste liquid pool.

[0023] The iron chip removal and cleaning operations are remotely controlled by the remote control center, eliminating the need for operators to manually clean the electromagnet 8, which is more efficient.

[0024] Embodiment 4: As attached Figure 1 , 2 As shown in FIG. 3 , each electromagnet 8 is provided with an electromagnet protection sleeve 9 on the outside. The electromagnet protection sleeve 9 is provided to protect the electromagnet 8, and the electromagnet 8 is cylindrical, installed in the electromagnet protection sleeve 9, and sealed.

[0025] Embodiment 5: As attached Figure 1 , 2 As shown in FIG. 3 , the electromagnets 8 are staggeredly arranged in the box body 4 , and the intervals between the electromagnets 8 are 20 mm to 50 mm.

[0026] By staggered arrangement of the electromagnets 8, the mud processing time can be increased and the magnetic material can be fully adsorbed.

[0027] Embodiment 6: As attached Figure 1 , 2As shown in Figure 3, the method for using the mud iron removal device is carried out according to the following method. Two groups of mud iron removal devices are set. When the first group of mud iron removal devices is performing mud iron removal operations, the second group of mud iron removal devices is performing cleaning operations. The remote control center controls the two groups of mud iron removal devices to alternately perform mud iron removal operations and cleaning operations. The remote control center controls the liquid inlet solenoid valve and the liquid outlet solenoid valve to select the iron removal operation or the cleaning operation. The specific steps of the mud iron removal operation are as follows: the mud passes through the solid control system from the wellbore and is connected to the mud inlet pipe 1. The mud enters the upper diversion chamber 3 and flows downward through the upper diversion hole to the box 4. The mud flows from top to bottom through different positions. The electromagnet protection sleeve 9 is arranged, and when the electromagnet 8 is energized, the electromagnet protection sleeve 9 absorbs the magnetic substance in the mud. After the mud passes through the electromagnet protection sleeve 9, it flows out from the mud outlet pipe 6 through the lower guide hole. The mud after the iron chips are removed enters the mud pool for recycling. After running for a certain period of time, the cleaning operation begins. The cleaning liquid enters the upper guide chamber 3 from the cleaning liquid inlet pipe 2, and enters the box body 4 through the upper guide hole. The electromagnet 8 is powered off, and the magnetic substance can no longer be adsorbed. The electromagnet protection sleeve 9 is kept clean under the flushing of the cleaning liquid. After the cleaning liquid flows out from the lower guide hole, it enters the waste liquid pool through the cleaning liquid outlet pipe to collect the magnetic substance and waste liquid, and the iron chips removal operation and the cleaning operation are completed.

[0028] Two groups of mud iron chip removal devices perform mud iron chip removal operations alternately to achieve continuity of the mud iron chip removal operations, and the mud treatment efficiency is higher.

[0029] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A slurry iron chip removal device, characterized in that It includes a mud inlet pipe, an upper guide chamber, a box body, a lower guide chamber, a mud outlet pipe, and an electromagnet. The upper guide chamber is trapezoidal, the upper end of the upper guide chamber is connected with the mud inlet pipe, the lower end of the upper guide chamber is provided with a plurality of upper guide holes which are passed through from top to bottom, the lower end of the upper guide chamber is installed with a box body, the box body is opened up and down, a plurality of electromagnets which are horizontally arranged are arranged at intervals up and down in the box body, the lower end of the box body is installed with a lower guide chamber, the lower guide chamber is in an inverted trapezoidal shape, a plurality of lower guide holes which are passed through from top to bottom are arranged on the upper side of the lower guide chamber, and the lower end of the lower guide chamber is connected with the mud outlet pipe.

2. The slurry iron chip removal device according to claim 1 is characterized in that It also includes a cleaning liquid inlet pipe and a cleaning liquid outlet pipe. The upper end of the upper guide chamber is connected to the cleaning liquid inlet pipe, and the lower end of the lower guide chamber is connected to the cleaning liquid outlet pipe.

3. The slurry iron chip removal device according to claim 2 is characterized in that It also includes a remote control center, a mud pump, a cleaning pump, a liquid inlet solenoid valve and a liquid outlet solenoid valve. The remote control center is connected to the mud pump, the cleaning pump, the liquid inlet solenoid valve and the liquid outlet solenoid valve respectively. The mud inlet pipe is connected to the mud pump, the cleaning inlet pipe is connected to the cleaning pump, the mud inlet pipe and the cleaning inlet pipe are connected to the liquid inlet solenoid valve, the mud outlet pipe and the cleaning outlet pipe are connected to the liquid outlet solenoid valve, the mud outlet pipe outlet is connected to the mud pool, and the cleaning outlet pipe outlet is connected to the waste liquid pool.

4. The slurry iron chip removal device according to claim 1, 2 or 3, characterized in that An electromagnet protection sleeve is arranged on the outside of each electromagnet.

5. The slurry iron chip removal device according to claim 1, 2 or 3, characterized in that The electromagnets are staggered in the box, with intervals of 20 mm to 50 mm between the electromagnets.

6. The slurry iron chip removal device according to claim 4 is characterized in that The electromagnets are staggered in the box, with intervals of 20 mm to 50 mm between the electromagnets.

7. A method for using the slurry iron chip removal device according to any one of claims 4 to 6, characterized in that According to the following method, two groups of mud iron removal devices are set up. When the first group of mud iron removal devices is performing mud iron removal operations, the second group of mud iron removal devices is performing cleaning operations. The remote control center controls the two groups of mud iron removal devices to perform mud iron removal operations and cleaning operations alternately. The remote control center controls the liquid inlet solenoid valve and the liquid outlet solenoid valve to select the iron removal operation or the cleaning operation. The specific steps of the mud iron removal operation are that the mud passes through the solid control system from the wellbore and is connected to the mud inlet pipe. The mud enters the upper diversion chamber and flows downward into the box evenly through the upper diversion hole. The mud flows from top to bottom through the electromagnets at different positions. Protective sleeve, when the electromagnet is energized, the electromagnet protective sleeve absorbs the magnetic material in the mud, and the mud passes through the electromagnet protective sleeve and flows out from the mud outlet pipe through the lower guide hole. The mud after iron chips are removed enters the mud pool for recycling. After running for a certain period of time, the cleaning operation begins, and the cleaning liquid enters the upper guide chamber from the cleaning inlet pipe and enters the box through the upper guide hole. The electromagnet is powered off, and the magnetic material can no longer be absorbed. The electromagnet protective sleeve is kept clean under the flushing of the cleaning liquid. After the cleaning liquid flows out from the lower guide hole, it enters the waste liquid pool through the cleaning liquid outlet pipe to collect the magnetic material and waste liquid, completing the iron chip removal and cleaning operations.

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