CN107165588B - A kind of horizontal bit change in seabed more changing device - Google Patents

Abstract

The invention relates to a subsea horizontal drill bit replacement device, which is composed of front and rear, left and right, up and down push-pull systems, an overturning oil cylinder system, a clamping system, an isolation oil cylinder system, a power tong system and a sealed shell system. It is characterized in that: the upper bolts of the left and right push-pull system are connected with the front and rear push-pull system, and the upper bolts of the front and rear push-pull system are connected with the up and down push-pull system; When replacing the old drill bit, the drill bit is loosened or tightened by the power tong system; the drill bit and the drill pipe are separated or connected by the clamping system, and the clamping system can move back and forth, left and right, and up and down; the flip cylinder system makes the clamping The system flips. Compared with the prior art, the present invention can replace the old drill bit at the subsea wellhead, thereby shortening the tripping time of the drill bit and the tripping time of the drill bit, thereby shortening the drilling cycle, reducing labor intensity, and reducing the overall cost of offshore oil and gas drilling .

Description

A subsea horizontal drill bit replacement device

technical field

The invention relates to the technical field of offshore oil and gas drilling equipment, in particular to a subsea horizontal drill bit replacement device.

Background technique

With the shortage of land oil and gas resources, the world's coastal countries have successively explored and exploited offshore oil and gas resources, and the exploration and exploitation of offshore oil and gas resources has gradually become the main trend of the development of the oil and gas industry at home and abroad. In addition, as my country's economy continues to grow rapidly, insufficient supply of oil and gas resources will become the main contradiction hindering economic development. In order to increase the possession of oil and gas resources, offshore oil and gas exploration and exploitation have become the strategic focus of my country's sustainable energy development.

Since the development of offshore oil and gas exploitation, drilling is still the main way of oil and gas exploitation. From drilling to completion of an oil and gas well, the following three main tasks need to be carried out: breaking the rock at the bottom of the well, transporting the broken rock (that is, cuttings) to the offshore platform, and completing the cementing. The drill bit is used in drilling engineering. The key rock-breaking tool for breaking rock and forming a wellbore. In the prior art, when the drill bit is worn by the formation, or when the drill bit encounters complex formations such as hard formations, abrasive formations, and shale layers, it is necessary to pull out the old drill bit at the bottom of the well to the offshore platform to replace the new drill bit; when pulling out, It is necessary to use hydraulic tongs to remove the single shackle of the drill pipe one by one, so that the old drill bit can be lifted to the offshore platform, and the worn out old drill bit can be replaced on the offshore platform, or the old drill bit that does not match the complex formation should be replaced. drill. After the old drill bit has been replaced, it is necessary to run in the drill. When running in, hydraulic tongs must be used to buckle up the drill pipes one by one to form a drill string, so that the new drill bit can be lowered into the well bottom. When the new drill bit is lowered into the bottom of the well, the pump is restarted for drilling operations, thereby achieving the purpose of increasing the drilling speed and reducing the overall cost of drilling.

However, the long tripping and tripping operation time caused by replacing the old drill bit increases the drilling cycle of offshore oil and gas wells and labor intensity, which greatly increases the drilling cost.

Contents of the invention

In order to overcome the above-mentioned shortcoming of existing drill bit replacement equipment, the object of the present invention is to provide a kind of subsea horizontal drill bit replacement device, which can replace the old drill bit at the subsea wellhead device, so as to shorten the drill bit tripping time and The down-drilling time of the drill bit, thereby shortening the drilling time of offshore oil and gas wells.

In order to achieve the above object, the technical solution of the present invention is achieved in that:

A subsea horizontal drill bit replacement device, comprising a left and right push-pull system 1, a front-to-rear push-pull system 2, an up-and-down push-pull system 3, a turning cylinder system 4, a clamping system 5, an isolation cylinder system 6, a power tong system 7 and a sealed casing 8 structure, which is characterized in that: the left and right bottom of the sealed shell 8 is bolted to the left and right push-pull system 1; the upper side of the left and right push-pull system 1 is connected to the front and rear push-pull system 2; the upper side of the front and rear push-pull system 2 is connected to the upper and lower push-pull system 3; The right side of the push-pull system 3 is connected with the overturning cylinder system 4; the overturning cylinder system 4 is pin-connected with the clamping system 5; the inner bolt on the right side of the sealing shell 8 is connected with the power clamp system 7; the isolation cylinder system 6 is located in the sealing shell 8 center positions;

The left and right push-pull system 1, the front and rear push-pull system 2, and the up-and-down push-pull system 3 are all composed of motors, slide rails and ball screws; The right side bolt of the straight support plate 34 is connected with a slide rail 32 and a ball screw 31, and the right side bolt of the slide rail 32 is fixed with a connection support plate 33; the right side of the connection support plate 33 is connected with the turning cylinder system 4 bolts;

The turning cylinder system 4 is composed of a suspension arm 41, a turning cylinder 42, a suspension tube 43 and a turning arm 45; the suspension arm 41 is in the shape of a 7, and the left end surface of the suspension arm 41 is designed with a through hole through which the bolt passes. The suspension arm 41 is fastened to the right end surface of the connecting support plate 33; the left end surface of the suspension arm 41 is designed with a double clevis, and the pin shaft passes through the double clevis and the single clevis of the overturning oil cylinder 42, and the overturning oil cylinder 42 and the suspension arm 41 form a pin. Shaft connection; the top right side of the suspension arm 41 is designed with a rectangular groove 44, the surface of the rectangular groove 44 is designed with a pin hole, the pin shaft passes through the pin hole and the pin hole of the flip arm 45 and the flip arm 45 and the suspension arm 41 form a pin connection; the single clevis of the piston rod of the turning cylinder 42 is connected with the double clevis pin of the suspension tube 43;

The suspension tube 43 is cylindrical, and the upper outer surface of the suspension tube 43 is welded with double clevis and flip arm 45. The double clevis of the suspension tube 43 forms a pin connection with the flip oil cylinder 42, and the flip arm 45 of the suspension tube 43 is connected with The suspension arm 41 forms a pin connection; the left end surface of the suspension tube 43 is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the motor to the left end surface of the suspension tube 43; the inner surface of the suspension tube 43 is equipped with a clamping system 5 .

The clamping system 5 includes a mounting cylinder 51, a clamping oil cylinder 52 and jaws 56. The mounting cylinder 51 is cylindrical, and balls are installed between the mounting cylinder 51 and the suspension cylinder 43; the lower end surface of the mounting cylinder 51 and the motor The rotating shaft forms a spline connection; the upper surface of the installation cylinder 51 is designed with a through hole, and the bolt passes through the through hole and the cylinder body 53 holding the oil cylinder 52 is fastened to the upper end surface of the installation cylinder 51; the lower end surface of the cylinder body 53 A rectangular bump 57 is designed, and the end surface of the rectangular bump 57 is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the cylinder body 53 to the upper end surface of the installation cylinder 51; the end surface bolt of the cylinder body 53 is connected with a flange end cover 55 , the piston rod 54 passes through the flange end cover 55 and is installed in the cylinder body 53 ; the end of the piston rod 54 is threadedly connected with the jaw 56 .

Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention can replace the old drill bit at the seabed inlet device, shorten the tripping time of the drill bit and the tripping time of the drill bit, and then reduce the amount of offshore oil and gas resources. The comprehensive cost of drilling and mining. 2. The clamping system of the present invention can move back and forth, left and right, and up and down, and more drill bits can be arranged at one time.

Description of drawings

Figure 1 is a three-dimensional schematic diagram of the connection between the up and down, front and rear push-pull system and the turning cylinder system.

Fig. 2 is a schematic diagram of the connection of the up and down push-pull system and the front-rear push-pull system.

Fig. 3 is a three-dimensional schematic diagram of the turning cylinder system.

Fig. 4 is a three-dimensional schematic diagram of the tilting cylinder system at different angles.

Fig. 5 is a schematic diagram of the connection between the suspension tube and the clamping system.

Fig. 6 is a three-dimensional sectional view of the connection between the suspension tube and the clamping system.

Fig. 7 is a three-dimensional cross-sectional view of the clamping system.

Fig. 8 is a sectional view of the clamping cylinder.

Figure 9 is a three-dimensional view of the cylinder.

Fig. 10 is a three-dimensional sectional view of the installation cylinder.

Fig. 11 is a schematic diagram of each system in the initial state of the present invention.

Fig. 12 is a schematic diagram when the power tong is loosened.

Fig. 13 is a schematic diagram of the clamping system separating the drill bit from the drill pipe.

Fig. 14 is a schematic diagram of the clamping system moving the old drill bit to the drill bit replacement position.

Fig. 15 is a schematic diagram of the clamping system when a new drill bit is removed.

Fig. 16 is a schematic diagram of the clamping system clamping the new drill bit to the drill pipe and initially connecting the drill bit and the drill pipe.

1. Left and right push-pull system;

2. Front and rear push-pull system;

3. Up and down push-pull system, 31. Ball screw, 32. Slide rail, 33. Connecting support plate, 34. Vertical support plate;

4. Flip cylinder system, 41. Suspension arm, 42. Flip cylinder, 43 Suspension cylinder, 44. Rectangular slot, 45. Flip arm;

5. Clamping system, 51. Installation barrel, 52. Clamping cylinder, 53. Cylinder body, 54. Piston rod, 55. Flange end cover, 56. Gripper jaw, 57. Rectangular bump;

6. Isolation cylinder system;

7. Power tong system;

8. Sealed shell;

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to Figures 1 to 2, and Figures 11 to 16, a subsea horizontal drill bit replacement device consists of a left and right push-pull system 1, a front and rear push-pull system 2, an up and down push-pull system 3, a flip cylinder system 4, a clamping system 5, and an isolation The oil cylinder system 6, the power tongs system 7 and the sealed housing 8 system constitute. The left and right bottom bolts of the sealed shell 8 are connected with left and right push-pull system 1; the upper side bolts of left and right push-pull system 1 are connected with front and rear push-pull system 2; the upper side bolts of front and rear push-pull system 2 are connected with up and down push-pull system 3; The turning cylinder system 4 is connected; the turning cylinder system 4 is pin-connected with the clamping system 5; the inner bolt on the right side of the sealing shell 8 is connected with the power tong system 7; the isolation cylinder system 6 is located at the center of the sealing shell 8.

The working principle of the subsea drill bit replacement device is as follows: Referring to Figure 11, when the old drill bit is drilling normally, the piston rod of the isolation cylinder system 6 is in an elongated state, so that the riser communicates with the wellhead device, thereby preventing the circulating sand during drilling from entering the seal The left and right sides of the housing 8. Referring to Figure 12, when the old drill bit needs to be replaced, the drill bit needs to be lifted to the subsea wellhead, the mud pump is turned off, and the piston rod of the isolation cylinder system 6 is withdrawn, and the old drill bit is lifted to the height of the power tong, and then started The motor at the power tongs makes the ball screw rotate, and then the power tongs system 7 is stretched out to the old drill bit; finally the power tongs are started, so that the power tongs clamp the old drill bit to carry out the loosening operation. Referring to Fig. 13, when the drill shackle operation is about to be completed, the shackle is stopped, and the motor at the power tong is started to rotate the ball screw, so that the power tong system 7 is retracted to the original position; then the clamping system 5 is placed in a vertical position. state, start the motors at left and right push-pull system 1, front and rear push-pull system 2, and up-and-down push-pull system 3 to rotate the ball screw, and then move the clamping system 5 to the old drill bit; then make the piston rod of the clamping system 5 clamp the old drill The drill bit is rotated so that the old bit is completely separated from the drill pipe. Referring to Figure 14, when the old drill bit is separated from the drill pipe, the motors at the left and right push-pull system 1, front and rear push-pull system 2, and up-and-down push-pull system 3 make the ball screw rotate, and then the clamping system 5 is retracted to the drill bit suspension frame ; When the clamping system 5 clamps the old drill bit and moves to the drill bit suspension frame, then rotate the motor to rotate the clamping system 5, so that the old drill bit is installed on the drill bit suspension frame. With reference to Fig. 15, after the old drill bit is installed on the suspension frame, start the motors at the left and right push-pull system 1, the front and rear push-pull system 2, and the up-and-down push-pull system 3, so that the ball screw rotates, and then the clamping system 5 withdraws from the installation position of the old drill bit; After the clamping system 5 exits the installation position of the old drill bit, start the left and right push-pull system 1, the front and rear push-pull system 2, and the up and down push-pull system 3, and after the clamping system 5 moves to the new drill bit, the piston rod of the clamping system 5 stretches out and Clamp the new drill bit, and start the motor to make the clamping system 5 rotate, and then separate the new drill bit from the suspension frame. Referring to Figure 16, when the new drill bit is separated from the suspension frame, start the left and right push-pull system 1, front and rear push-pull system 2, and up-and-down push-pull system 3, and then move the clamping system 5 to the drill pipe; when the new drill bit moves to the drill pipe, , so that the motor at the suspension system rotates, and then the new drill bit is connected to the drill pipe to realize the initial make-up; when the new drill bit and the drill pipe are initially made-up, start the left and right push-pull system 1, front and rear push-pull system 2, and up-and-down push-pull system again 3. Return the clamping system 5 to the original position; finally move the power tongs to the new drill bit, and then start the power tongs to fasten the new drill bit. After the fastening operation of the power tong is completed, it returns to the initial position, and the piston rod of the isolation cylinder system 6 is stretched out to re-establish the water riser and the wellhead flow channel.

1-2, the left and right push-pull system 1, front and rear push-pull system 2, and up-and-down push-pull system 3 are all composed of motors, slide rails and ball screw structures. The front and rear push-pull system 2 makes the clamping system 5 move back and forth; the left and right push-pull system 1 makes the clamping system 5 move left and right; the up-and-down push-pull system 3 makes the clamping system 5 move up and down, and the up-down push-pull system 3 also functions as an installation flip oil cylinder The role of System 4. The lower end of the vertical support plate 34 of the upper and lower push-pull system 3 is connected with the front and rear push-pull system 2 bolts; the right side bolt of the vertical support plate 34 is connected with a slide rail 32 and a ball screw 31, and the right side bolt of the slide rail 32 is fastened There is a connecting support plate 33; the right side of the connecting supporting plate 33 is connected with the turning cylinder system 4 with bolts.

Referring to Figures 3 to 4, the overturning cylinder system 4 serves to install the clamping system 5 and turn the clamping system 5 into a horizontal or vertical state. The turning cylinder system 4 is composed of a suspension arm 41, a turning cylinder 42, a suspension tube 43 and a turning arm 45; the suspension arm 41 plays the role of connecting the upper and lower push-pull systems 3, and provides an installation position for the clamping system 5; The overturning oil cylinder 42 plays the role of overturning the clamping system 5, so that the clamping system 5 is in a horizontal or vertical state; the suspension tube 43 plays the role of installing the motor and installing the clamping system 5; the overturning arm 45 plays the role of overturning The role of the clamping system 5.

The suspension arm 41 is 7-shaped, and the left end surface of the suspension arm 41 is designed with a through hole, and the bolt passes through the through hole to fasten the suspension arm 41 to the right end surface of the connecting support plate 33 . The left end face of suspension arm 41 is designed with double clevis, and pin shaft passes through double clevis and the single clevis of overturning oil cylinder 42, and makes overturning oil cylinder 42 and suspension arm 41 form pin shaft connection. The right side of the top of the suspension arm 41 is designed with a rectangular groove 44, the surface of the rectangular groove 44 is designed with a pin hole, the pin shaft passes through the pin hole and the pin hole of the flip arm 45, and the flip arm 45 and the suspension arm 41 form a pin shaft connect.

Referring to Fig. 3 ~ 4, the left and right ends of described overturning oil cylinder 42 are designed with single clevis; The left single clevis of overturning oil cylinder 42 cooperates with the double clevis of suspension arm 41, and forms pin connection; The right single clevis of overturning oil cylinder 42 and The double clevis of suspension tube 43 cooperates, and forms pin shaft connection.

The suspension tube 43 is cylindrical, and the upper outer surface of the suspension tube 43 is welded with double clevis and flip arm 45; The turning arm 45 is pinned to the suspension arm 41 . The left end surface of the suspension tube 43 is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the motor to the left end surface of the suspension tube 43 . A clamping system 5 is installed on the inner surface of the suspension tube 43, and spherical balls are installed between the clamping system 5 and the suspension system.

7, the clamping system 5 includes a mounting cylinder 51, a clamping cylinder 52 and a jaw 56; the mounting cylinder 51 is used to install the clamping cylinder 52 and transmit the rotational movement of the motor; the clamping The oil cylinder 52 is used to clamp the drill bit, and under the rotation of the motor, the drill bit is separated from the drill bit suspension frame, or the drill bit is initially connected to the drill rod; the clamping jaw 56 is used to contact the drill bit and clamp the drill bit.

Referring to FIG. 7 , the mounting cylinder 51 is cylindrical, and balls are installed between the mounting cylinder 51 and the suspension cylinder 43; the lower end surface of the mounting cylinder 51 forms a spline connection with the rotating shaft of the motor, thereby transmitting the rotational motion of the motor. The upper surface of the installation cylinder 51 is designed with 16 through holes, and the bolts pass through the through holes and the cylinder body 53 holding the oil cylinder 52 is fastened to the upper end surface of the installation cylinder 51 .

Referring to FIGS. 8-10 , the clamping cylinder 52 system includes a cylinder body 53 , a piston rod 54 , a flange end cover 55 and jaws 56 . The lower end surface of the cylinder body 53 is designed with a rectangular protrusion 57 , and the end surface of the rectangular protrusion 57 is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the cylinder body 53 to the upper end surface of the installation cylinder 51 . The end face of the cylinder body 53 is bolted to a flange end cover 55 , and the piston rod 54 passes through the flange end cover 55 and is installed in the cylinder body 53 . The upper surface of the cylinder body 53 is not shown in contact with the baffle, and the baffle is bolted to the suspension tube 43 to limit the axial displacement of the clamping cylinder 52 system. The end of the piston rod 54 is screwed to the clamping jaw 56 .

Claims (2)

1. A submarine horizontal drill bit replacement device, which consists of a left and right push-pull system (1), a front-to-back push-pull system (2), an up-and-down push-pull system (3), a flip cylinder system (4), a clamping system (5), an isolation The oil cylinder system (6), the power tong system (7) and the sealing shell (8) are characterized in that: the left and right bottom bolts of the sealing shell (8) are connected with the left and right push-pull system (1); the left and right push-pull system (1) ) The upper side bolts are connected with the front and rear push-pull system (2); the front and rear push-pull system (2) the upper side bolts are connected with the up and down push-pull system (3); the up and down push-pull system (3) the right side bolts are connected with the flip cylinder system (4); the flip cylinder The system (4) is pin-connected with the clamping system (5); the inner bolt on the right side of the sealing housing (8) is connected with the power tong system (7); the isolation cylinder system (6) is located at the center of the sealing housing (8); The left and right push-pull system (1), the front-to-back push-pull system (2), and the up-down push-pull system (3) are all composed of motors, slide rails and ball screws; the vertical support plate (34) of the up-down push-pull system (3) The lower end is connected with the front and rear push-pull system (2) by bolts; the right side bolt of the vertical support plate (34) is connected with the slide rail (32) and the ball screw (31), and the right side bolt of the slide rail (32) is fixed with the connecting support plate (33); the right side of the connecting support plate (33) is bolted to the overturning cylinder system (4); The turning cylinder system (4) is composed of a suspension arm (41), a turning cylinder (42), a suspension tube (43) and a turning arm (45); the suspension arm (41) is in the shape of a 7, and the suspension arm (41 ) is designed with a through hole on the left end surface, and the bolt passes through the through hole to fasten the suspension arm (41) to the right end surface of the connecting support plate (33); the left end surface of the suspension arm (41) is designed with double clevis, and the pin shaft passes through the double The earring and the single clevis of the overturning cylinder (42), and make the overturning cylinder (42) form a pin shaft connection with the suspension arm (41); the right side of the top of the suspension arm (41) is designed with a rectangular groove (44), the rectangular groove (44) The surface is designed with a pin hole, and the pin shaft passes through the pin hole and the pin hole of the turning arm (45), and makes the turning arm (45) and the suspension arm (41) form a pin shaft connection; the turning cylinder (42) The single clevis of the piston rod is connected with the double clevis pin of the suspension tube (43); The suspension tube (43) is cylindrical, and the upper outer surface of the suspension tube (43) is welded with double clevis and flip arm (45), and the double clevis of the suspension tube (43) and the flip cylinder (42) form a pin shaft Connection, the turning arm (45) of the suspension tube (43) forms a pin connection with the suspension arm (41); the left end surface of the suspension tube (43) is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the motor to the suspension tube ( 43) on the left end surface; the inner surface of the suspension tube (43) is equipped with a clamping system (5). 2. A subsea horizontal drill bit replacement device according to claim 1, characterized in that: the clamping system (5) includes a mounting cylinder (51), a clamping cylinder (52) and clamping jaws (56) , the installation cylinder (51) is cylindrical, and balls are installed between the installation cylinder (51) and the suspension cylinder (43); the lower end surface of the installation cylinder (51) forms a spline connection with the rotating shaft of the motor; the installation cylinder (51) The upper surface of the upper surface is designed with a through hole, and the bolt passes through the through hole and fastens the cylinder body (53) of the clamping oil cylinder (52) to the upper end surface of the installation cylinder (51); the lower end surface of the cylinder body (53) is designed There is a rectangular bump (57), and the end face of the rectangular bump (57) is designed with a threaded hole, and the bolt passes through the threaded hole to fasten the cylinder body (53) to the upper end surface of the installation cylinder (51); the cylinder body (53) The end face bolts are connected with a flange end cover (55), and the piston rod (54) passes through the flange end cover (55) and is installed in the cylinder body (53); the end of the piston rod (54) and the jaw (56) threaded connection.