A pressurized coating and excess discharge mechanism for a while-drilling wall strengthening device

Abstract

The application discloses a kind of pressurized smearing and excess discharge mechanism of while drilling well wall reinforcing device, including reaction cabin mechanism, for mixing mud and reaction liquid and being evenly smeared on well wall by hanging brush with mixed liquid;Air bag chamber mechanism is used to deliver gas to reaction cabin mechanism, to promote mud and reaction liquid to mix fully or push mixed liquid;Mud isolation mechanism is in close contact with well wall by rubber contact ring;Pushing mechanism is used to push mud isolation mechanism and reaction cabin mechanism out, and press mud isolation mechanism tightly on well wall surface;The application realizes the overall coverage of well wall by multiple reaction cabin mechanisms operating independently;Mud isolation mechanism is tightly combined with well wall by pushing mechanism, solving the problem of mixed liquid and mud separation during solid wall operation;The problem of mixed liquid excess is solved by air bag chamber and check valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling, drilling engineering and well wall protection, and particularly relates to a pressurized smearing and excess discharge mechanism of a while-drilling well wall strengthening device. BACKGROUND

[0002] The self-walking and self-azimuth directional drilling technology has three major advantages: first, the drilling machine is cancelled. The bottom drive double drill bit replaces the rotary drive of the drilling machine, the while-drilling mud circulation replaces the ground mud pump circulation, and the near-bit drilling pressure adjustment system replaces the drilling machine hook control drilling pressure; second, the depth dependence on the drill pipe is eliminated. The armored cable pipe is used as the main transmission medium, which greatly reduces the tripping time and reduces the disturbance of the drill pipe to the well wall; third, the drilling system is self-walking and self-azimuth directional. It does not need to be set on the ground to pressurize the drill bit.

[0003] Similar to conventional drilling, when the target of no-drill pipe directional drilling is achieved, the well wall stability needs to be considered. First, the unstable or unstable area of the well wall needs to be known. For this purpose, the inventor proposes a "self-provided drilling stratum rock morphology continuous recording device", patent number: CN201921263123.9, which realizes the recording of the well wall morphology while drilling and determines the unstable or unstable area of the well wall; second, the obtained unstable or unstable well wall area needs to be reinforced, and there is no related solution and report at present, which is a blank. Therefore, the while-drilling well wall strengthening device is invented.

[0004] However, the mixture of A and B needs to be quickly smeared on the unstable area of the well wall before solidification, and the excess needs to be discharged into the circulating mud. Therefore, it is necessary to invent a pressurized smearing and excess discharge mechanism of a while-drilling well wall strengthening device. SUMMARY

[0005] The purpose of the present application is to solve the problems in the background art and provide a pressurized smearing and excess discharge mechanism of a while-drilling well wall strengthening device.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The present application provides a pressurized smearing and excess discharge mechanism of a while-drilling well wall strengthening device, comprising:

[0008] The reaction cabin mechanism is used for mixing the mud and the reaction liquid, and uniformly smearing the mixed liquid on the well wall through the hanging brush;

[0009] The gas bag chamber mechanism is used for delivering gas to the reaction cabin mechanism to promote the mixing of the mud and the reaction liquid or push the mixed liquid;

[0010] The mud isolation mechanism is in close contact with the well wall through the rubber contact ring;

[0011] Pushing mechanism, used for pushing the mud isolation mechanism and the reaction chamber mechanism out and pressing the mud isolation mechanism against the well wall surface;

[0012] The mud isolation mechanism comprises an isolation body, a rubber contact ring and a one-way valve, the isolation body is fixedly connected with the reaction chamber body, the rubber contact ring is distributed at the front end of the isolation body and contacts the well wall during operation;

[0013] The one-way valve comprises a one-way valve shell, a stop head and a spring, the one-way valve shell is fixedly arranged in the isolation body, the stop head is directed to the upper surface of the isolation body and is uniformly distributed on the lower surface of the isolation body.

[0014] Further, the number of the reaction chamber mechanisms is N, N is equal to 4, each reaction chamber mechanism operates independently, and each reaction chamber mechanism is connected with one mud isolation mechanism and two pushing mechanisms.

[0015] Further, the reaction chamber mechanism comprises a gas inlet, a mud delivery port, a reaction liquid delivery port, a stepping motor, a mixing device, a torsion motor, a threaded rod, a hanging brush, a reaction chamber body, a distance sensor and a baffle.

[0016] Further, the number of the gas inlets is 2, the gas inlets are symmetrically distributed on both sides of the reaction chamber body and are fixedly connected with the gas pipeline, the mud delivery port is fixedly connected with the lower pipeline of the mud recovery mechanism, and the reaction liquid delivery port is fixedly connected with the injection pipeline of the reaction liquid delivery mechanism.

[0017] Further, the stepping motor comprises a stepping motor body, a central shaft and a screw, the stepping motor body is fixed on the reaction chamber body through the screw, and the stepping motor body is connected with the mixing device through the central shaft.

[0018] Further, the number of the torsion motors is 2, the torsion motors are fixedly arranged in the isolation mechanism and are fixedly connected with the threaded rods, the number of the threaded rods is 2, the threaded rods are symmetrically distributed on both sides of the reaction chamber body and are connected with the hanging brush through threaded holes.

[0019] The hanging brush comprises threaded holes and sensor holes, the number of the threaded holes is 2, the threaded holes are symmetrically distributed on both sides of the hanging brush, the number of the distance sensors is 2, the distance sensors are symmetrically arranged in the upper and lower positions and are fixedly connected with the hanging brush through the sensor holes, and the baffle is slidingly connected in the sliding groove of the reaction chamber body.

[0020] Further, the air bag chamber mechanism comprises an air bag chamber outer wall, gas pipelines, bearing columns, air bags and reaction liquid delivery ports, the air bag chamber outer wall is fixedly connected with the blocking mechanism, the number of the gas pipelines is 8, the gas pipelines are symmetrically distributed in two layers, the gas pipelines are fixedly connected with the air bags, the air bags are connected with the gas inlets and the reaction chamber mechanisms through the air holes of the blocking mechanism, the number of the bearing columns is 2, the bearing columns are symmetrically distributed and are fixedly connected with the air bags and the blocking mechanism, and the number of the reaction liquid delivery ports is 2 and the reaction liquid delivery ports are symmetrically distributed.

[0021] Further, the pushing mechanism comprises a pushing rod, a base, a receiver, an antenna, a motor, a screw rod and bolts, the pushing rod is fixedly connected with the reaction chamber body, is connected with the motor through the screw rod and can move horizontally, the base is fixedly connected with the blocking mechanism, the receiver is fixedly connected with the antenna and the motor, forms a control network with the ground control chamber, and the motor is fixedly connected with the base through the four bolts.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] The multiple reaction chamber mechanisms are independently operated, the well wall is fully covered, the pushing mechanism is used to tightly combine the mud separation mechanism and the well wall, the problem of separating the mixed liquid and the mud during the solid wall operation is solved, the air bag chamber and the one-way valve are used to solve the processing problem when the mixed liquid is excessive, the broken well wall can be targetedly reinforced, and the mud can be recycled and utilized. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can be obtained by those skilled in the art according to these drawings.

[0025] Figure 1 It is a three-dimensional view of the application connected with the while-drilling well wall reinforcement device.

[0026] Figure 2 It is a front view of the application connected with the while-drilling well wall reinforcement device.

[0027] Figure 3 It is a structural view of the reaction chamber mechanism.

[0028] Figure 4 It is a sectional view of the reaction chamber mechanism.

[0029] Figure 5 It is a structural view of the stepping motor.

[0030] Figure 6 It is a structural view of the brush.

[0031] Figure 7 It is a front view of the air bag chamber mechanism.

[0032] Figure 8 It is a top view of the air bag chamber mechanism.

[0033] Figure 9It is a structural schematic diagram of the mud isolation mechanism.

[0034] Figure 10 It is a cross-sectional schematic diagram of the one-way valve.

[0035] Figure 11 It is a structural schematic diagram of the pushing mechanism.

[0036] Figure 12 It is a structural schematic diagram of the pushing mechanism Figure Two .

[0037] Figure 13 The blocking plate, the conveying belt, the pulley and the tension pulley connection schematic diagram. DETAILED DESCRIPTION

[0038] In order to better understand the technical solution, the method of the present application will be described in detail below with reference to the accompanying drawings.

[0039] Referring to the drawings, the present application proposes a pressurized smearing and excess discharge mechanism of a while-drilling well wall reinforcing device, comprising a reaction cabin mechanism 3, an air bag chamber mechanism 4, a mud isolation mechanism 5 and a pushing mechanism 6. Among them:

[0040] The reaction cabin mechanism 3 is used for mixing mud and reaction liquid, and uniformly smearing the mixed liquid on the well wall through the hanging brush 308, comprising a gas inlet 301, a mud conveying port 302, a reaction liquid conveying port 303, a stepping motor 304, a mixing device 305, a torsion motor 306, a threaded rod 307, a hanging brush 308, a reaction cabin body 309, a distance sensor 3010 and a baffle 3011.

[0041] Specifically, the number of the gas inlet 301 is 2, which is symmetrically distributed on both sides of the reaction cabin body 309, the gas inlet 301 is fixedly connected with the gas pipeline 402, the mud conveying port 302 is fixedly connected with the lower pipeline of the mud recovery mechanism 1, and the reaction liquid conveying port 303 is fixedly connected with the injection pipeline of the reaction liquid conveying mechanism 2.

[0042] The stepping motor 304 comprises a stepping motor body 30401, a center shaft 30402 and a screw 30403, the stepping motor body 30401 is fixed on the reaction cabin body 309 through the screw 30403, and is connected with the mixing device 305 through the center shaft 30402.

[0043] The number of the torsion motor 306 is 2, which is fixedly connected inside the isolation mechanism 5 and fixedly connected with the threaded rod 307, the number of the threaded rod 307 is 2, which is symmetrically distributed on both sides of the reaction cabin body 309 and connected with the hanging brush 308 through the threaded hole 30801.

[0044] The hanging brush 308 comprises threaded holes 30801 and sensor holes 30802, the number of the threaded holes 30801 is 2, which are symmetrically distributed on both sides of the hanging brush 308, the number of the distance sensors 3010 is 2, which are symmetrically distributed on the upper and lower sides, and the distance sensors 3010 are fixedly connected to the hanging brush 308 through the sensor holes 30802, the baffle 3011 is slidingly connected in the sliding groove of the reaction chamber body 309, specifically, the baffle 3011 is fixedly connected with a rack, the driving motor is fixedly connected in the reaction chamber body 309, and the driving motor output gear is engaged with the rack, so that the rack is driven to move by the rotation of the driving motor, and then the sliding of the baffle 3011 is realized.

[0045] The moving mode of the baffle 1011 can also be referred to Figure 13 That is, the baffle 1011 is fixedly connected with the conveying belt 301102, the pulley 301104 is rotatably installed in the reaction chamber body 309, and the conveying belt 301102 is sleeved outside the pulley 301104, the rotation of the pulley 301104 is driven by the driving motor, and the tensioning wheel 301103 is arranged at the side edge of the conveying belt 301102, which is used for adjusting the tension of the conveying belt 301102.

[0046] The air bag chamber mechanism 4 is used for conveying gas to the reaction chamber mechanism 3 to promote the mixing of the mud and the reaction liquid or to push the mixed liquid, which comprises an air bag chamber outer wall 401, gas pipelines 402, bearing columns 403, air bags 404 and reaction liquid conveying ports 405, the air bag chamber outer wall 401 is fixedly connected with the blocking mechanism 8, the number of the gas pipelines 402 is 8, which are symmetrically distributed in two layers, the gas pipelines 402 are fixedly connected with the air bags 404 and are connected with the gas conveying port 301 and the reaction chamber mechanism 3 through the air holes of the blocking mechanism 8, the number of the bearing columns 403 is 2, which are symmetrically distributed and fixedly connected with the air bags 404 and the blocking mechanism 8, and the number of the reaction liquid conveying ports 405 is 2, which are symmetrically distributed.

[0047] The mud isolation mechanism 5 is in close contact with the well wall through a rubber contact ring 502, which comprises an isolation body 501, the rubber contact ring 502 and a one-way valve 503, the isolation body 501 is fixedly connected with the reaction chamber body 309, the rubber contact ring 502 is distributed at the front end of the isolation body 501 and is in contact with the well wall during work.

[0048] Specifically, the one-way valve 503 comprises a one-way valve shell 50301, a blocking head 50302 and a spring 50303, the one-way valve shell 50301 is fixedly connected inside the isolation body 501, the blocking head 50302 is directed to the upper surface of the isolation body 501, and the spring 50303 is arranged between the blocking head 50302 and the isolation body 501.

[0049] The number of the one-way valves 503 is 4, which are uniformly distributed on the lower surface of the isolation body 501.

[0050] Pushing mechanism 6 for pushing mud isolation mechanism 5 and reaction chamber mechanism 3 out and pressing mud isolation mechanism 5 against the well wall surface, comprising push rod 601, base 602, receiver 603, antenna 604, motor 605, screw rod 606 and bolt 607, push rod 601 is fixedly connected with reaction chamber body 309, push rod 601 is connected with motor 605 through screw rod 606, and push rod 601 can move horizontally.

[0051] Specifically, base 602 is fixedly connected with blocking mechanism 8, receiver 603 is fixedly connected with antenna 604 and motor 605, a control network is formed with the ground control room, and motor 605 is fixedly connected with base 602 through four bolts 607.

[0052] Further, the number of mud isolation mechanisms 5 is four, which are symmetrically distributed in two layers, and the number of pushing mechanisms 6 is eight, each two pushing mechanisms 6 are connected with one reaction chamber mechanism 3.

[0053] Working principle and use process of the application:

[0054] The mud enters the inside of reaction chamber mechanism 3 through the mud conveying pipeline of mud recovery mechanism 1, the reaction liquid is injected into the inside of reaction chamber 3 from the ground storage through reaction liquid conveying mechanism 2, the stepping motor 304 drives the mixing device 305 to mix the mud and the reaction liquid, the gas bag chamber mechanism 4 delivers a small amount of gas to the reaction chamber mechanism 3 through the gas pipeline 402, so as to promote the mud and the reaction liquid to be fully mixed to form a preliminary mixed liquid;

[0055] When reaching the damaged rock layer, the device hovers by means of the continuous recording device of the rock stratum topography while drilling of the torque self-balancing drilling system, the antenna 604 of the pushing mechanism 6 receives the signal of the control room, the push rod 601 is driven by the motor 605 to push the mud isolation mechanism 5 and the reaction chamber mechanism 3 out, the mud isolation mechanism 5 is pressed against the well wall surface, the baffle 3011 is opened, the gas bag chamber mechanism 4 delivers a large amount of gas to the reaction chamber mechanism 3, the mixed liquid is sprayed out of the reaction chamber body 309 to the well wall, the mixed liquid is pushed to the surface of the damaged rock layer by means of the gas pressure, the pressure in the gas bag chamber mechanism 4 cannot compress the spring 50303 at this time, the one-way valve 503 is in a closed state, the threaded rod 307 is rotated by the torsion motor 306, so that the brush 308 moves vertically, after the distance sensor 3010 contacts the mud isolation mechanism 5, the torsion motor 306 is reversely rotated, so that the brush 308 repeatedly moves vertically, and the mixed liquid is uniformly smeared on the well wall.

[0056] After the protective layer is fixed, the slurry recovery device 1 and the reaction liquid conveying mechanism 2 stop working, the air bag chamber mechanism 4 continues to convey gas to the reaction chamber mechanism 3, at this time, the conveying gas pressure is greater than the gas pressure when spraying, the spring 50303 contracts, the one-way valve 503 is in the open state, and the excess mixed liquid is discharged through the one-way valve 503, after the discharge, the push mechanism 6 retracts the push rod 601, and the slurry isolation mechanism 5 and the reaction chamber mechanism 3 are taken back.

[0057] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressurized application and excess discharge mechanism for a while-strengthening device while drilling, characterized by, The utility model relates to a mud separation and reaction device for well wall, which comprises a mud separation mechanism (5), a reaction chamber mechanism (3), a gas bag chamber mechanism (4) and a pushing mechanism (6). The reaction chamber mechanism (3) comprises a gas inlet (301), a mud inlet (302), a reaction liquid inlet (303), a stepping motor (304), a mixing device (305), a torsion motor (306), a threaded rod (307), a hanging brush (308), a reaction chamber body (309), a distance sensor (3010) and a baffle (3011). The mud separation mechanism (5) comprises a separation body (501), a rubber contact ring (502) and a one-way valve (503). The pushing mechanism (6) is used for pushing the mud separation mechanism (5) and the reaction chamber mechanism (3) out and pressing the mud separation mechanism (5) against the surface of the well wall. The mud separation mechanism (5) comprises the separation body (501), the rubber contact ring (502) and the one-way valve (503). The one-way valve (503) comprises a one-way valve shell (50301), a stop head (50302) and a spring (50303). The reaction chamber mechanism (3) comprises the gas inlet (301), the mud inlet (302), the reaction liquid inlet (303), the stepping motor (304), the mixing device (305), the torsion motor (306), the threaded rod (307), the hanging brush (308), the reaction chamber body (309), the distance sensor (3010) and the baffle (3011). The gas inlet (301) is symmetrical and is fixedly connected with a gas pipeline (402). The mud inlet (302) is fixedly connected with a lower pipeline of the mud recovery mechanism (1). The reaction liquid inlet (303) is fixedly connected with an injection pipeline of the reaction liquid delivery mechanism (2). The stepping motor (304) comprises a stepping motor body (30401), a central shaft (30402) and a screw (30403). The torsion motor (306) is fixedly connected with the threaded rod (307). The hanging brush (308) comprises a threaded hole (30801) and a sensor hole (30802). The distance sensor (3010) is fixedly connected with the hanging brush (308) through the sensor hole (30802). The baffle (3011) is slidably connected in a sliding groove of the reaction chamber body (309). The air bag chamber mechanism (4) comprises an air bag chamber outer wall (401), a gas pipeline (402), a bearing column (403), an air bag (404) and a reaction liquid delivery port (405), the air bag chamber outer wall (401) is fixedly connected with the blocking mechanism (8), the number of the gas pipelines (402) is eight, which are symmetrically distributed in two layers, the gas pipelines (402) are fixedly connected with the air bag (404) and connected with the gas delivery port (301) and the reaction cabin mechanism (3) through the air holes of the blocking mechanism (8), the number of the bearing columns (403) is two, which are symmetrically distributed and fixedly connected with the air bag (404) and the blocking mechanism (8), and the number of the reaction liquid delivery ports (405) is two, which are symmetrically distributed.

2. The pressurized application and excess discharge mechanism of a while-drilling wall-strengthening device according to claim 1, characterized in that, The number of the reaction cabin mechanisms (3) is N, N is equal to 4, each reaction cabin mechanism (3) independently operates, and each reaction cabin mechanism (3) is connected with one mud isolation mechanism (5) and two pushing mechanisms (6).

3. The pressurized application and excess discharge mechanism of a while-drilling wall-strengthening device according to claim 1, characterized in that, The pushing mechanism (6) comprises a push rod (601), a base (602), a receiver (603), an antenna (604), a motor (605) and a screw rod (606), the push rod (601) is fixedly connected with the reaction cabin body (309) and connected with the motor (605) through the screw rod (606) and can move horizontally, the base (602) is fixedly connected with the blocking mechanism (8), the receiver (603) is fixedly connected with the antenna (604) and the motor (605) and forms a control network with an aboveground control room, and the motor (605) is fixedly connected with the base (602).

Images