A casing connection and running device for high-position large-diameter drilling holes and a use method thereof

Abstract

This invention provides a casing connection and delivery device for high-level large-diameter drilling, including an anchor chain, upper and lower hydraulic cylinders, rollers, delivery cylinders, a chain hoist, a floating cylinder, a connecting rod, a pneumatic motor, a guide rail, a drilling rig, a drill rod, a drill bit, an upper casing, a lower casing, and a clamping and rotating mechanism. In use, the casing connection and delivery device is moved forward to above the casing to be connected; the chain hoist is lowered to the casing, and the casing is lifted by binding or other means until the clamping and rotating mechanism can clamp the casing through the extension of the upper and lower hydraulic cylinders; the height of the casing relative to the borehole opening is adjusted by the extension and retraction of the upper and lower hydraulic cylinders; the inclination of the casing is adjusted by the rotary support to ensure that the inclination of the casing matches the opening angle; the clamping and rotating mechanism, the delivery cylinder, and the floating cylinder are controlled to clamp and connect the casing; the entire device is moved to deliver the casing into the borehole opening; and the drill rod and drill bit on the drilling rig are controlled to push the casing to the required position. This device can meet the requirements for lifting, connecting, and delivering large-diameter casings.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling, specifically to a casing connection and delivery device and its usage method for high-level large-diameter boreholes. Background Technology

[0002] In the field of coal mine drilling, crawler drilling rigs are an effective means of addressing issues such as gas outbursts and rock bursts in coal mines. To improve gas extraction efficiency, reduce the number of boreholes, and increase drilling efficiency, high-level, large-diameter boreholes are increasingly being used in many mining areas, especially in the Huaihe River Basin and Shanxi Province. However, during construction, due to the instability of the strata, it is necessary to lower the borehole casing. Because the borehole casing has a large diameter and heavy weight, and the underground working conditions are poor with limited space, lowering the casing is extremely difficult, often requiring 5-6 people working together. Furthermore, this process is inefficient, physically demanding, and has a low safety factor. Summary of the Invention

[0003] In view of the defects or deficiencies of the existing technology, the purpose of this invention is to provide a casing connection and delivery device and a method for use in high-level large-diameter drilling.

[0004] To achieve the above objectives, the present invention employs the following technical solutions:

[0005] A casing connection and delivery device for high-level large-diameter drilling, characterized in that it includes an anchor chain, upper and lower hydraulic cylinders, rollers; delivery cylinders, chain hoists, floating cylinders, connecting rods, pneumatic motors, guide rails, drilling rigs, drill rods, drill bits, upper casing, lower casing, and a clamping and rotating mechanism; wherein:

[0006] The anchor chain is anchored to the roof plate, enabling the entire device to be suspended from the top of the tunnel.

[0007] The pneumatic motor is driven by compressed air from the well and moves the entire device back and forth by rolling rollers on the guide rail.

[0008] The guide rail is made of I-beam steel, and the rollers are embedded inside the I-beam steel to roll.

[0009] The feeding and discharging cylinder adopts a single-cylinder double-piston structure to realize the feeding and discharging of the lower sleeve into the hole and the feeding connection of the upper sleeve 13.

[0010] According to the present invention, the upper and lower hydraulic cylinders include a connecting rod, a fixed seat, a slewing support, a rotating seat, a rotary cylinder, a top wheel, and a pivot pin; wherein:

[0011] The slewing support is installed between the fixed base and the rotating base to adjust the inclination of the rotating base and the lower connecting structure.

[0012] The upper and lower hydraulic cylinders are bolted together and mounted on the rotating base.

[0013] The chain hoist is mounted on the rotating seat and is used to lift the upper and lower sleeves.

[0014] The top wheel is installed at the bottom of the upper and lower cylinders, and its installation position adopts a slotted hole for adjusting the diameter of the clamping and rotating mechanism, so as to be suitable for clamping and connecting various sleeves.

[0015] One end of the rotary cylinder is hinged to the outer wall of the upper and lower cylinders, and the other end is connected to the clamping mechanism through a pivot pin 27, which is used to realize the clamping sleeve function requirement of the clamping mechanism.

[0016] Specifically, the clamping mechanism includes a rotating shaft, a driven wheel, a drive motor, a belt, a driving wheel, and a clamping housing; wherein:

[0017] The drive motor drives the drive wheel to rotate, which in turn drives the belt to rotate, thereby enabling the connection between the upper and lower sleeves.

[0018] The clamping housing is connected to the rotary cylinder via a pivot pin and to the upper and lower cylinders via a rotating shaft, thereby enabling the clamping housing to rotate around the rotating shaft under the pushing action of the rotary cylinder.

[0019] The driven pulley is mounted on the clamping housing through a waist-shaped hole, mainly used to achieve smooth belt transmission and belt tensioning;

[0020] Furthermore, both the driving wheel and the driven wheel are belt pulleys, which can be replaced by drive gears, and the belt can be replaced by a chain;

[0021] The method of using the above-mentioned casing connection and delivery device for high-level large-diameter drilling is characterized by including the following steps:

[0022] S1: After drilling, move the drilling rig backward and move the casing connection and delivery device forward to the top of the casing to be connected;

[0023] S2: The casing connection and delivery device uses downhole compressed air as a power source. It lowers the chain hoist to the casing and lifts it until the clamping and rotating mechanism can clamp the casing by extending the upper and lower cylinders.

[0024] S3: After the clamping and rotating mechanism clamps the casing, the height of the casing and the orifice is met by the extension and retraction of the upper and lower hydraulic cylinders; the inclination of the casing is adjusted by the rotary support to ensure that the inclination of the casing is consistent with the opening angle.

[0025] S4: After the height and inclination of the casing are adjusted, control the hydraulic motor of the clamping mechanism to drive the belt to rotate and drive the casing to rotate. At the same time, the upper casing is moved and the front and rear floating compensation during the thread tightening process is realized by the feeding cylinder and the floating cylinder respectively. After the casing thread connection is completed, move the whole set of devices to feed the casing into the hole, and at the same time control the drill rod and drill bit on the drilling rig to move forward until they hit the casing.

[0026] S5: A casing connection and delivery device for high-level large-diameter drilling. It loosens the casing and moves it to the rear of the drilling rig. By controlling the drill rod and drill bit on the drilling rig, it pushes the casing to the required position.

[0027] Furthermore, the sleeve connection method in step S4 is as follows:

[0028] S4-11: The clamping mechanism clamps the sleeve under the action of the rotating cylinder;

[0029] S4-12: The hydraulic motor that controls the clamping and rotating mechanism drives the belt to rotate. At this time, the feed of the casing is achieved by adjusting the piston rod of the feed and discharge cylinder.

[0030] S4-13: By using a floating hydraulic cylinder, thread wear during the sleeve connection process is reduced.

[0031] The further optimized method for casing delivery in step S4 is as follows:

[0032] S4-22: After the upper and lower casings are connected, the entire device is moved toward the wellhead by a pneumatic motor driven by downhole compressed air. It stops when the lower casing is close to the wellhead.

[0033] S4-23: The height of the sleeve and the orifice is adjusted by extending and retracting the upper and lower hydraulic cylinders, and the inclination of the sleeve is adjusted by the rotary support to ensure that the inclination of the sleeve is consistent with the opening angle.

[0034] S4-24: The lower casing is fed into the orifice by the simultaneous movement of the feed cylinder and the floating cylinder towards the orifice.

[0035] S4-25: Control the drill rod and drill bit on the drilling rig to move forward until they hit the casing, release the clamping mechanism, and control the drill rod and drill bit on the drilling rig to push the casing to the required position.

[0036] The present invention provides a casing connection and delivery device and method for high-level large-diameter drilling, which meets the requirements for lifting, connecting and delivering large-diameter casings, reduces the labor intensity and time spent by workers in the construction process of large-diameter casings, improves casing connection efficiency, and reduces the labor intensity of workers. It provides a new and safe and reliable casing connection and delivery device and method for the field of mining drilling construction, ensuring the safety of drilling construction. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the sleeve to be lifted.

[0038] Figure 2 This is a schematic diagram after the sleeve has been lifted.

[0039] Figure 3 A schematic diagram for adjusting the inclination of the casing;

[0040] Figure 4 This is a schematic diagram showing the connection and installation of the two sets of pipes.

[0041] Figure 5 This is a schematic diagram of the casing lowering structure;

[0042] Figure 6 This is a schematic diagram of the clamping and rotating mechanism;

[0043] Figure 7 A schematic diagram of the clamping and rotating mechanism holding the sleeve;

[0044] Figure 8 This is a schematic diagram of the hydraulic system of the casing connection and delivery device for high-level large-diameter drilling according to the present invention.

[0045] The labels in the attached diagram represent: 1. Anchor chain; 2. Upper and lower hydraulic cylinders; 3. Roller; 4. Feeding and releasing hydraulic cylinder; 5. Chain hoist; 6. Floating hydraulic cylinder; 7. Connecting rod; 8. Pneumatic motor; 9. Guide rail; 10. Drill rig; 11. Drill rod; 12. Drill bit; 13. Upper casing; 14. Lower casing; 15. Clamping and rotating mechanism; 21. Connecting rod; 22. Fixed seat; 23. Rotary support; 24. Rotating seat; 25. Rotary hydraulic cylinder; 26. Top wheel; 2 7. Turning pin; 151. Rotating shaft; 152. Driven wheel; 153. Drive motor; 154. Belt; 155. Drive wheel; 156. Clamping housing; 111. Hydraulic pump; 112. Moving relief valve; 113. Moving working valve; 114. Travel motor; 115. Function switching valve; 116. Working relief valve; 117. Air filter; 118. Suction oil filter; 119. Return oil filter; 120. Oil tank.

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Detailed Implementation

[0047] In order to make the advantages and features of the present invention more easily understood by those skilled in the art, and to make a clearer and more explicit definition of the scope of protection of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0048] See Figure 1-5This embodiment provides a casing connection and delivery device for high-level large-diameter drilling, including an anchor chain 1, upper and lower hydraulic cylinders 2, rollers 3; delivery cylinder 4, chain hoist 5, floating cylinder 6, connecting rod 7, pneumatic motor 8, guide rail 9, drilling rig 10, drill rod 11, drill bit 12, upper casing 13, lower casing 14, and clamping and rotating mechanism 15; wherein:

[0049] The anchor chain 1 is anchored to the top plate, so that the entire device is suspended from the top of the roadway.

[0050] The pneumatic motor 8 is driven by compressed air from the well and moves back and forth on the guide rail 9 via rollers 3;

[0051] The guide rail 9 adopts an I-beam structure, and the roller 3 is embedded inside the I-beam for rolling.

[0052] The feeding and discharging cylinder 4 adopts a single-cylinder double-piston structure to realize the feeding and discharging of the lower sleeve 14 into the hole and the feeding connection of the upper sleeve 13.

[0053] In this embodiment, the upper and lower hydraulic cylinders 2 include a connecting rod 21, a fixed base 22, a slewing support 23, a rotating base 24, a rotating hydraulic cylinder 25, a top wheel 26, and a pivot pin 27; wherein:

[0054] The slewing support 23 is installed between the fixed base 22 and the rotating base 24 to realize the tilt adjustment of the rotating base 24 and the lower connecting structure.

[0055] The upper and lower hydraulic cylinders 2 are bolted to the rotating base 24;

[0056] The chain hoist 5 is mounted on the rotating seat 24 and is used to lift the upper sleeve 13 and the lower sleeve 14.

[0057] The top wheel 26 is installed at the bottom of the upper and lower oil cylinders 2. Its installation position adopts a slotted hole for adjusting the diameter of the clamping and rotating mechanism 15, so as to be suitable for clamping and connecting various sleeves.

[0058] One end of the rotary cylinder 25 is hinged to the outer wall of the upper and lower cylinders 2, and the other end is connected to the clamping mechanism 15 through the pivot pin 27, so as to realize the clamping sleeve function requirement of the clamping mechanism 15.

[0059] The method of using the casing connection and delivery device for high-level large-diameter drilling (hereinafter referred to as the casing connection and delivery device) in the above embodiments includes the following steps:

[0060] S1: After drilling rig 10 has started working, move drilling rig 10 backward and move casing connection and delivery device forward to the top of the casing to be connected;

[0061] S2: The casing connection and delivery device uses downhole compressed air as a power source. It lowers the chain hoist 5 to the casing and lifts it until the clamping and rotating mechanism 15 can be extended by the upper and lower oil cylinders 2 to clamp the casing.

[0062] S3: After clamping the casing, the upper and lower cylinders 2 extend and retract to meet the height requirements between the casing and the orifice; the slewing support 23 adjusts the inclination of the casing to ensure that the inclination of the casing is consistent with the opening angle.

[0063] S4: After the height and inclination of the casing are adjusted, the hydraulic motor of the clamping mechanism 15 is controlled to drive the belt 154 to rotate and drive the casing to rotate. At the same time, the upper casing 13 is moved and the front and rear floating compensation during the thread tightening process is realized by the feeding cylinder 4 and the floating cylinder 6 respectively. After the casing thread connection is completed, the entire device is moved to feed the casing into the hole. At the same time, the drill rod 11 and drill bit 12 on the drilling rig 10 are controlled to move forward until they hit the casing.

[0064] S5: The casing connection and delivery device loosens the casing and moves it to the rear of the drilling rig. The drill rod 11 and drill bit 12 on the drilling rig 10 are controlled to push the casing to the required position.

[0065] As one implementation method, the sleeve connection process is as follows:

[0066] like Figure 6-7 As shown, the clamping mechanism 15 includes a rotating shaft 151, a driven wheel 152, a drive motor 153, a belt 154, a driving wheel 155, and a clamping housing 156. The drive motor 153 drives the driving wheel 155 to rotate, which in turn drives the belt 154 to rotate, thereby connecting the upper sleeve 13 and the lower sleeve 14. The clamping housing 156 is connected to the rotating cylinder 25 via a pivot pin 27, and is also connected to the upper and lower cylinders 2 via the rotating shaft 151, so that the clamping housing 156 rotates around the rotating shaft 151 under the pushing action of the rotating cylinder 25. The driven wheel 152 is installed on the clamping housing 156 through an oblong hole, mainly used to realize the smooth transmission of the belt 154 and the tensioning of the belt 154.

[0067] In actual manufacturing, the driving wheel 155 and the driven wheel 152 are both belt pulleys, which can be replaced by drive gears, and the belt 154 can be replaced by a chain.

[0068] In this embodiment, the hydraulic system for the casing connection and delivery device used for high-level large-diameter drilling is as follows:

[0069] like Figure 8As shown, the pneumatic motor 8 starts working under the action of compressed air downhole and drives the hydraulic pump 111 to run. The hydraulic oil enters the function switching valve 115 through the suction filter 118. When the function switching valve 115 is in the initial position, the hydraulic oil enters the moving working valve 113. The moving working valve 113 switches the forward and reverse rotation of the walking motor 114, and at the same time, the moving speed of the device is adjusted by the moving relief valve 112. When the function switching valve 115 is in another position, the hydraulic oil enters the multi-way valve group, which can control the upper and lower cylinders 2, the feeding and releasing cylinders 4, the floating cylinder 6, the rotating cylinder 25, and drive the motor 153. At the same time, the operating speed of each action is adjusted by the working relief valve 116. The air filter 117 is used to filter the air entering the oil tank 120, and the return oil enters the oil tank 120 through the return oil filter 119.

[0070] In this embodiment, the sleeve connection method is as follows:

[0071] S4-11: The clamping mechanism 15 clamps the sleeve under the action of the rotating cylinder 25;

[0072] S4-12: The hydraulic motor that controls the clamping mechanism 15 drives the belt to rotate. At this time, the feed of the casing is achieved by adjusting the piston rod of the feed cylinder 4.

[0073] S4-13: The wear of threads during the sleeve connection process is reduced by the action of the floating cylinder 6.

[0074] In this embodiment, the sleeve insertion and insertion method is as follows:

[0075] S4-22: After the upper casing 13 and the lower casing 14 are connected, the entire device is moved toward the wellhead by using downhole compressed air driven by the pneumatic motor 8. It stops when the lower casing 14 approaches the wellhead.

[0076] S4-23: The height of the sleeve and the orifice is adjusted by extending and retracting the upper and lower hydraulic cylinders 2, and the inclination of the sleeve is adjusted by the rotary support 23 to ensure that the inclination of the sleeve is consistent with the opening angle.

[0077] S4-24: The lower sleeve is fed into the orifice by the simultaneous movement of the feeding and releasing oil cylinder 4 and the floating oil cylinder 6.

[0078] S4-25: Control the drill rod and drill bit on the drilling rig to move forward until they hit the casing, release the clamping mechanism 15, and control the drill rod 11 and drill bit 12 on the drilling rig 10 to push the casing to the required position.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A casing connection and feeding device for high-level large-diameter drilling, comprising a drilling rig, a drill rod, and a drill bit, wherein the drilling rig is equipped with a drill rod, and the drill rod is equipped with a drill bit; characterized in that, It also includes anchor chains, upper and lower hydraulic cylinders, rollers; feed and release hydraulic cylinders, chain hoists, floating hydraulic cylinders, pneumatic motors, guide rails, upper sleeves, lower sleeves, and clamping and rotating mechanisms; among which: The anchor chain is anchored to the roof plate, enabling the entire device to be suspended from the top of the tunnel. The pneumatic motor is driven by compressed air from the well and moves the entire device back and forth by rolling rollers on the guide rail. The guide rail is made of I-beam steel, and the rollers are embedded inside the I-beam steel to roll. The feeding and releasing cylinder adopts a single-cylinder double-piston structure to realize the feeding and releasing of the lower sleeve into the hole and the feeding connection of the upper sleeve; the feeding and releasing cylinder and the floating cylinder respectively realize the movement of the upper sleeve and the back-and-forth floating compensation during the thread tightening process. The upper and lower hydraulic cylinders include a connecting rod, a fixed base, a slewing support, a rotating base, a rotary cylinder, a top wheel, and a pivot pin; wherein: The slewing support is installed between the fixed base and the rotating base to adjust the inclination of the rotating base and the lower connecting structure. The upper and lower hydraulic cylinders are bolted together and mounted on the rotating base. The chain hoist is mounted on the rotating seat and is used to lift the upper and lower sleeves. The top wheel is installed at the bottom of the upper and lower cylinders, and its installation position adopts a slotted hole for adjusting the diameter of the clamping and rotating mechanism, so as to be suitable for clamping and connecting various sleeves. One end of the rotary cylinder is hinged to the outer wall of the upper and lower cylinders, and the other end is connected to the clamping mechanism through a pivot pin, so as to realize the clamping sleeve function requirement of the clamping mechanism. The clamping mechanism includes a rotating shaft, a driven wheel, a drive motor, a belt, a driving wheel, and a clamping housing; wherein: The drive motor drives the drive wheel to rotate, which in turn drives the belt to rotate, thereby enabling the connection between the upper and lower sleeves. The clamping housing is connected to the rotary cylinder via a pivot pin and to the upper and lower cylinders via a rotating shaft, thereby enabling the clamping housing to rotate around the rotating shaft under the pushing action of the rotary cylinder. The driven wheel is mounted on the clamping housing through a waist-shaped hole, mainly used to achieve smooth belt transmission and belt tensioning.

2. The casing connection and feeding device for high-level large-diameter drilling as described in claim 1, characterized in that, Both the driving wheel and the driven wheel are belt pulleys.

3. The method of using the casing connection and delivery device for high-level large-diameter drilling as described in any one of claims 1 to 2, characterized in that, Includes the following steps: S1: After drilling, move the drilling rig backward and move the casing connection and delivery device forward to the top of the casing to be connected; S2: The casing connection and delivery device uses downhole compressed air as a power source. It lowers the chain hoist to the casing and lifts it until the clamping and rotating mechanism can clamp the casing by extending the upper and lower cylinders. S3: After the clamping and rotating mechanism clamps the casing, the height of the casing and the orifice is met by the extension and retraction of the upper and lower hydraulic cylinders; the inclination of the casing is adjusted by the rotary support to ensure that the inclination of the casing is consistent with the opening angle. S4: After the height and inclination of the casing are adjusted, control the hydraulic motor of the clamping mechanism to drive the belt to rotate and drive the casing to rotate. At the same time, the upper casing is moved and the front and rear floating compensation during the thread tightening process is realized by the feeding cylinder and the floating cylinder respectively. After the casing thread connection is completed, move the whole set of devices to feed the casing into the hole, and at the same time control the drill rod and drill bit on the drilling rig to move forward until they hit the casing. S5: The casing connection and delivery device loosens the casing and moves it to the rear of the drilling rig. The casing is then lowered to the required position by controlling the drill rod and drill bit on the drilling rig.

4. The method as described in claim 3, characterized in that: The sleeve connection method in step S4 is as follows: S4-11: The clamping mechanism clamps the sleeve under the action of the rotating cylinder; S4-12: The hydraulic motor that controls the clamping and rotating mechanism drives the belt to rotate. At this time, the feed of the casing is achieved by adjusting the piston rod of the feed and discharge cylinder. S4-13: By using a floating hydraulic cylinder, thread wear during the sleeve connection process is reduced.

5. The method as described in claim 3, characterized in that: The casing insertion / extraction method in step S4 is as follows: S4-22: After the upper and lower casings are connected, the entire device is moved toward the wellhead by a pneumatic motor driven by downhole compressed air. It stops when the lower casing is close to the wellhead. S4-23: The height of the sleeve and the orifice is adjusted by extending and retracting the upper and lower hydraulic cylinders, and the inclination of the sleeve is adjusted by the rotary support to ensure that the inclination of the sleeve is consistent with the opening angle. S4-24: The lower casing is fed into the orifice by the simultaneous movement of the feed cylinder and the floating cylinder towards the orifice. S4-25: Control the drill rod and drill bit on the drilling rig to move forward until they hit the casing, release the clamping mechanism, and control the drill rod and drill bit on the drilling rig to push the casing to the required position.

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