Large-dip-angle hydraulic automatic casing running device

Abstract

The utility model provides a large-dip-angle hydraulic automatic casing running device, which relates to the technical field of coal mine tools, and comprises a movable orifice plate and a hydraulic cylinder, one end of the hydraulic cylinder is connected with one end of the movable orifice plate, one end of the movable orifice plate is provided with a through hole, the output end of the hydraulic cylinder is provided with a cylinder jackscrew head, and the output end of the hydraulic cylinder is provided with a through hole. The cylinder body jackscrew head movably penetrates through the through hole; the movable orifice plate is fixed at the orifice, a liquid supply pipeline is connected through the liquid supply port, a sleeve enters the movable orifice plate during construction, a hydraulic medium enters the hydraulic cylinder body, the cylinder body jackscrew head is pushed to advance to abut against the sleeve in the movable orifice plate, then the sleeve is clamped and fixed, the cylinder body jackscrew head retracts after liquid supply is closed, and the movable orifice plate is connected with the liquid supply pipeline through the liquid supply port. And the operation is repeated and matched with a drilling machine to complete gradual downward arrangement of the casing pipe in the large-elevation-angle hole, so that personnel for fixing the casing pipe at the orifice position are directly omitted, and the operation speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine tools, in particular to a large-angle hydraulic automatic casing lowering device. Background Art

[0002] The casing lowering process of high-angle drilling construction refers to the operation process of lowering casing of specific size and material into the wellbore step by step during the drilling process, especially in drilling operations that require a large elevation angle (i.e., a large angle measured upward from the baseline or horizontal plane);

[0003] During the casing lowering process of drilling at a high elevation angle, due to the deadweight of the casing, after the casing at the hole mouth is lowered into the hole, if you want to connect the next one, you need to manually stand on a work platform and use other methods to fix the casing at the hole mouth. After fixation, the drilling rig is used to push in part, and then fix and push in again. The labor intensity of the personnel standing on the work platform to fix the casing is large and the efficiency is low. In addition, the casing is fixed at the hole mouth by a person, and a signal is sent to the drilling rig operator after it is fixed, which may easily cause misoperation and malfunction of the confirmation signal, resulting in the casing in the hole falling and injuring people. Therefore, the utility model proposes a large-angle hydraulic automatic casing lowering device to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes a large-angle hydraulic automatic casing lowering device, which adopts the coal mine underground production water pressure to drive the hydraulic cylinder body, so as to achieve the purpose of loosening and tightening the casing lowered into the hole and cooperating with the drilling rig to continuously push the casing into the hole.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a large-angle hydraulic automatic casing device, comprising a movable orifice plate and a hydraulic cylinder body, one end of the hydraulic cylinder body is connected to one end of the movable orifice plate, one end of the movable orifice plate is provided with a through hole, the output end of the hydraulic cylinder body is provided with a cylinder body top screw head, and the cylinder body top screw head movably penetrates the through hole;

[0006] A liquid supply pipe is arranged at one end of the hydraulic cylinder body away from the movable orifice plate, and one end of the liquid supply pipe is connected with a liquid supply port.

[0007] A further improvement is that the liquid supply port is used to connect to the water supply port at the construction site, and the water supply port is connected to the valve body with a hose to control the opening and stopping.

[0008] A further improvement is that one end of the cylinder body top screw head is used to extend to the inside of the movable orifice plate, and one end of the cylinder body top screw head is provided with a soft rubber pad.

[0009] A further improvement is that a pressure gauge mounting head is provided on one side of the liquid supply pipe, and the pressure gauge mounting head is communicated with the liquid supply pipe, and the pressure gauge mounting head is used to mount a pressure gauge.

[0010] A further improvement is that the movable orifice plate comprises a first half hoop and a second half hoop, and one end of the first half hoop is rotatably connected to one end of the second half hoop through a hinge.

[0011] A further improvement is that a connecting block is provided at one end of the first half hoop and the second half hoop away from the hinge, and screw rods are passed through the two groups of the connecting blocks, and a nut is threadedly installed at one end of the screw rod.

[0012] A further improvement is that a first gasket is provided on one side of the outer end of the first half hoop, a second gasket is provided on the other side of the outer end of the second half hoop, and mounting holes are provided on both the first gasket and the second gasket.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model fixes the movable orifice plate at the orifice, and connects the liquid supply pipeline through the liquid supply port. During construction, the casing enters the movable orifice plate, and the hydraulic medium enters the hydraulic cylinder body, pushing the cylinder body top screw head forward to tighten the casing in the movable orifice plate, thereby playing a role in fixing the casing. After the liquid supply is closed, the cylinder body top screw head retracts, thereby loosening the casing at the movable orifice plate. This is repeated and cooperated with the drilling rig to gradually lower the casing in the large-angle hole, directly eliminating the need for personnel to fix the casing at the orifice, and controlling the liquid supply can complete the fixing and tightening of the casing in the hole, with quick response and fast operation speed.

[0015] 2. When the utility model is used, the same person can fix the hole casing and operate the drilling rig, which greatly reduces the misoperation caused by unclear signal confirmation and greatly improves the construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a schematic diagram of the hydraulic cylinder body of the utility model;

[0018] Figure 3 It is a schematic diagram of the movable orifice plate of the utility model.

[0019] Among them: 1. movable orifice plate; 2. hydraulic cylinder body; 3. through hole; 4. cylinder body top screw head; 5. liquid supply pipe; 6. liquid supply port; 7. pressure gauge mounting head; 8. first half hoop; 9. second half hoop; 10. hinge; 11. connecting block; 12. screw rod; 13. nut; 14. first gasket; 15. second gasket. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] Embodiment 1

[0022] according to Figure 1 , 2 As shown in , 3, this embodiment proposes a large-angle hydraulic automatic casing running device, including a movable orifice plate 1 and a hydraulic cylinder 2, one end of the hydraulic cylinder 2 is connected to one end of the movable orifice plate 1, one end of the movable orifice plate 1 is provided with a through hole 3, the output end of the hydraulic cylinder 2 is provided with a cylinder top screw head 4, and the cylinder top screw head 4 movably penetrates the through hole 3;

[0023] The end of the hydraulic cylinder body 2 away from the movable orifice plate 1 is provided with a liquid supply pipe 5, and one end of the liquid supply pipe 5 is connected to the liquid supply port 6. When in use, check the integrity of the device, install the pressure gauge on the pressure gauge mounting head 7 on the device, and use bolts to fix the first gasket 14 and the second gasket 15 between the device and the flange of the first casing of the orifice where the casing is to be placed; use a high-pressure hose to connect the production water to the φ19mm tee, and install a stop valve on the water supply end and the two water outlet ends of the tee. One of the water outlet ends is connected to the liquid supply port 6 with a high-pressure hose, and the other end is used for pressure relief. At the same time, check whether the water supply pressure at the construction site meets the operating requirements; close the stop valve at the water supply end, open the stop valve at the pressure relief end and the end connected to the device, and lower the first A casing is installed, and the first casing is pushed into the movable orifice plate 1, the water supply end and the stop valve connected to the device end are opened, the pressure relief end stop valve is closed, and the cylinder top screw head 4 is pushed forward to tighten the inner casing of the movable orifice plate 1, thereby playing the role of fixing the casing. The inner casing of the movable orifice plate 1 is connected to the next casing 0.3 to 0.5m outside the orifice. After the casing is connected, the drilling rig power head is matched with the drill rod with a tray to press against the lower end of the connected casing. At this time, the water supply stop valve is closed, the pressure relief stop valve is opened, the cylinder top screw head 4 retracts, and then the casing at the movable orifice plate 1 is loosened, and the drilling rig is used to push the connected casing into the hole, and the operation is repeated.

[0024] The liquid supply port 6 is used to connect the water supply port at the construction site, and the water supply port is connected to the valve body with a hose to control the opening and stopping. When in use, use a high-pressure hose to connect the production water to the φ19mm tee. A stop valve is installed on each of the tee water supply end and the two water outlet ends. One of the water outlet ends is connected to the liquid supply port 6 with a high-pressure hose, and the other end is used for pressure relief. At the same time, check whether the water supply pressure at the construction site meets the operating requirements. The liquid supply port 6 is connected to the water supply port at the construction site (generally a reserved φ19mm straight-through is used), and is connected with a KG19 high-pressure hose and a ball valve (or stop valve) to control the opening and stopping to ensure that pressure can be supplied and pressure relieved.

[0025] One end of the cylinder top screw head 4 is used to extend to the inside of the movable orifice plate 1, and one end of the cylinder top screw head 4 is provided with a soft rubber pad. The hydraulic cylinder 2 uses a reciprocating piston cylinder with an inner diameter of not less than 100 mm, and a high-strength pressure-resistant spring is installed at the inner end of the cylinder, wherein the cylinder top screw head 4 is connected to the cylinder piston. During processing, ensure that the length of the spring at the inner end of the cylinder is well matched with the cylinder top screw head 4. Too long or too short is not conducive to subsequent construction operations.

[0026] A pressure gauge mounting head 7 is provided on one side of the liquid supply pipe 5, and the pressure gauge mounting head 7 is connected to the liquid supply pipe 5. The pressure gauge mounting head 7 is used to mount a pressure gauge. During construction, a pressure gauge within 16MPa is mounted on the pressure gauge mounting head to ensure that the water pressure is not less than 1.5MPa during construction. If the water pressure is too low, there is a risk of the casing in the hole not being able to support the downward movement.

[0027] Embodiment 2

[0028] according to Figure 1 , 2 As shown in , 3, this embodiment proposes a large-angle hydraulic automatic casing running device, including a movable orifice plate 1 and a hydraulic cylinder 2, one end of the hydraulic cylinder 2 is connected to one end of the movable orifice plate 1, one end of the movable orifice plate 1 is provided with a through hole 3, the output end of the hydraulic cylinder 2 is provided with a cylinder top screw head 4, and the cylinder top screw head 4 movably penetrates the through hole 3;

[0029] The end of the hydraulic cylinder body 2 away from the movable orifice plate 1 is provided with a liquid supply pipe 5, and one end of the liquid supply pipe 5 is connected to the liquid supply port 6. When in use, check the integrity of the device, install the pressure gauge on the pressure gauge mounting head 7 on the device, and use bolts to fix the first gasket 14 and the second gasket 15 between the device and the flange of the first casing of the orifice where the casing is to be placed; use a high-pressure hose to connect the production water to the φ19mm tee, and install a stop valve on the water supply end and the two water outlet ends of the tee. One of the water outlet ends is connected to the liquid supply port 6 with a high-pressure hose, and the other end is used for pressure relief. At the same time, check whether the water supply pressure at the construction site meets the operating requirements; close the stop valve at the water supply end, open the stop valve at the pressure relief end and the end connected to the device, and lower the first A casing is installed, and the first casing is pushed into the movable orifice plate 1, the water supply end and the stop valve connected to the device end are opened, the pressure relief end stop valve is closed, and the cylinder top screw head 4 is pushed forward to tighten the inner casing of the movable orifice plate 1, thereby playing the role of fixing the casing. The inner casing of the movable orifice plate 1 is connected to the next casing 0.3 to 0.5m outside the orifice. After the casing is connected, the drilling rig power head is matched with the drill rod with a tray to press against the lower end of the connected casing. At this time, the water supply stop valve is closed, the pressure relief stop valve is opened, the cylinder top screw head 4 retracts, and then the casing at the movable orifice plate 1 is loosened, and the drilling rig is used to push the connected casing into the hole, and the operation is repeated.

[0030] The movable orifice plate 1 includes a first half hoop 8 and a second half hoop 9, and one end of the first half hoop 8 is rotatably connected to one end of the second half hoop 9 through a hinge 10. A connecting block 11 is provided at one end of the first half hoop 8 and the second half hoop 9 away from the hinge 10, and a screw rod 12 is penetrated through the two groups of the connecting blocks 11, and a nut 13 is threadedly installed at one end of the screw rod 12, which is convenient for threaded connection or unlocking, and the first half hoop 8 and the second half hoop 9 can be rotated to open or close. A first gasket 14 is provided on one side of the outer end of the first half hoop 8, and a second gasket 15 is provided on the other side of the outer end of the second half hoop 9. The first gasket 14 and the second gasket 15 are both provided with mounting holes. When in use, the device is fixedly connected to the flange of the first casing of the orifice where the casing is to be placed, and the first gasket 14 and the second gasket 15 are bolted to fix the device to the drilled orifice where the casing is to be placed.

[0031] The large-angle hydraulic automatic casing lowering device fixes the movable orifice plate 1 at the orifice, and connects the liquid supply pipeline through the liquid supply port 6. During construction, the casing enters the movable orifice plate 1, and the hydraulic medium enters the hydraulic cylinder body, pushing the cylinder body screw head 4 forward to tighten the casing in the movable orifice plate 1, thereby playing the role of clamping the casing. After the liquid supply is closed, the cylinder body screw head 4 retracts, thereby loosening the casing at the movable orifice plate 1. This is repeated and cooperates with the drilling rig to gradually lower the casing in the large-angle hole, directly eliminating the need for personnel to fix the casing at the orifice, and controlling the liquid supply can complete the fixing and tightening of the casing in the hole. It is quick to respond and has a fast operating speed. In addition, by using this product, the same person can fix the orifice casing and operate the drilling rig, which greatly reduces the misoperation caused by unclear signal confirmation and greatly improves construction safety.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-angle hydraulic automatic casing running device, comprising a movable orifice plate (1) and a hydraulic cylinder (2), characterized in that: One end of the hydraulic cylinder body (2) is connected to one end of the movable orifice plate (1), one end of the movable orifice plate (1) is provided with a through hole (3), the output end of the hydraulic cylinder body (2) is provided with a cylinder body screw head (4), and the cylinder body screw head (4) is movable through the through hole (3); A liquid supply pipe (5) is provided at one end of the hydraulic cylinder body (2) away from the movable orifice plate (1), and one end of the liquid supply pipe (5) is connected to a liquid supply port (6).

2. The large-angle hydraulic automatic casing running device according to claim 1 is characterized in that: The liquid supply port (6) is used to connect to the water supply port at the construction site, and the water supply port is connected to the valve body through a hose to control the opening and closing.

3. The large-angle hydraulic automatic casing running device according to claim 1 is characterized in that: One end of the cylinder body top screw head (4) is used to extend into the interior of the movable orifice plate (1), and one end of the cylinder body top screw head (4) is provided with a soft rubber pad.

4. The large-angle hydraulic automatic casing running device according to claim 1 is characterized in that: A pressure gauge mounting head (7) is provided on one side of the liquid supply pipe (5), and the pressure gauge mounting head (7) is communicated with the liquid supply pipe (5), and the pressure gauge mounting head (7) is used for mounting a pressure gauge.

5. The large-angle hydraulic automatic casing running device according to claim 1 is characterized in that: The movable orifice plate (1) comprises a first half hoop (8) and a second half hoop (9), one end of the first half hoop (8) being rotatably connected to one end of the second half hoop (9) via a hinge (10).

6. The large-angle hydraulic automatic casing running device according to claim 5 is characterized in that: A connecting block (11) is provided at one end of the first half hoop (8) and the second half hoop (9) away from the hinge (10), and screw rods (12) are passed through the two groups of connecting blocks (11), and a nut (13) is threadedly installed at one end of the screw rod (12).

7. The large-angle hydraulic automatic casing running device according to claim 6 is characterized in that: A first gasket (14) is provided on one side of the outer end of the first half hoop (8), and a second gasket (15) is provided on the other side of the outer end of the second half hoop (9). Both the first gasket (14) and the second gasket (15) are provided with mounting holes.

Images