Relay drilling column discharge device and discharge method

Abstract

The present invention discloses a relay-type drilling column discharge device, comprising a column relay support seat placed in front of the wellhead center of the drilling platform, a lower manipulator placed at the lower back crossbeam of the derrick, a column relay clamping clamp assembly placed in the middle of the second-level platform close to the wellhead centerline, a hydraulic elevator suspended on a lifting ring, and a pipe laying device placed above the second-level platform. The present invention can also use a set of pipe laying devices installed under the second-level platform to perform pipe laying operations. The relay-type drilling column discharge device of the present invention solves the problems in the prior art of the pipe laying device and the drilling platform manipulator handing over in the wellhead area and the pipe laying action affecting the top drive swimming operation time, which affects the drilling efficiency. The present invention also discloses a relay-type drilling column discharge method.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas drilling equipment, and relates to a relay-type drilling column discharge device. The present invention also relates to a method for discharging drilling columns by using the relay-type drilling column discharge device. Background Art

[0002] In recent years, automated tubular string handling technology for drilling and workover rigs has developed rapidly, and has been widely adopted in small batches. During this process, the use of pipe-laying devices and drill floor manipulators has enabled unmanned, automated pipe-laying of the upper portion of the second-floor drilling column and positioning of the lower portion of the drilling column on the drill floor stand. This mechanized column-laying method replaces manual column-laying, reducing labor intensity and improving safety. Despite its significant advantages, its adoption has been slow, primarily due to the following reasons: The mechanized column-laying rate is 18 to 19 pipes per hour (based on an estimate of a 28-meter column on a conventional ZJ70DB drilling rig), compared to a slightly lower rate of 20 to 23 pipes per hour for manual column-laying, resulting in a slightly lower efficiency. After carefully analyzing and comparing the work process of raising and lowering the column using conventional pipe-laying devices with the manual discharge process, it was found that the four links, including the drilling platform manipulator aligning the lower part of the column at the center line of the wellhead, transferring the lower part of the column to the root platform, and the pipe-laying device aligning the upper part of the column near the center line of the wellhead, transferring the upper part of the column out of the wellhead, took a total of 50 seconds, accounting for 25% of the total time for raising and lowering a column, which is a large proportion. Summary of the Invention

[0003] The purpose of the present invention is to provide a relay drilling column discharge device, which solves the problem in the prior art that the connection between the pipe discharge device and the drilling platform manipulator in the wellhead area and the pipe discharge action affect the top drive movement time, which affects the drilling efficiency.

[0004] Another object of the present invention is to provide a relay drilling column discharge method.

[0005] The technical solution adopted by the present invention is a relay-type drilling column discharge device, which includes a column relay support seat placed in front of the center of the wellhead on the drilling platform, a lower manipulator placed on the back beam at the bottom of the derrick, a column relay clamping clamp assembly placed in the middle of the second-level platform near the center line of the wellhead, a hydraulic elevator suspended on the lifting ring, and a pipe discharge device placed above the second-level platform.

[0006] The pipe arrangement device can move forward, backward, left and right.

[0007] When using the relay-type drilling column discharge device, during the process of pulling out or drilling down, the lower joint seat of the drilling column is placed above the relay support seat, and the upper part of the drilling column is clamped by the clamping clamp head of the column relay clamping clamp head assembly on the second-level platform, and the drilling column is in a relay storage state; thereafter, during the process of pulling out, the drilling column is grabbed by the pipe discharge device and discharged into the second-level platform. During the process of drilling down, the drilling column is buckled with a hydraulic elevator, and with the cooperation of the lower manipulator, the drilling column is sent to the center line of the wellhead.

[0008] The drilling column relay is stored outside the operating path area of ​​the drilling rig travel system in front of the wellhead centerline.

[0009] The pipe laying device can be installed under the second-floor platform, that is, the pipe laying device of the present invention can also be used to carry out pipe laying operations by installing a set of pipe laying devices under the second-floor platform.

[0010] The second technical solution adopted by the present invention is a relay-type drilling column discharge method, which adopts the above-mentioned relay-type drilling column discharge device. The drilling column discharge process when drilling is started is as follows:

[0011] This process is when the drilling column is lifted by the pipe arrangement device from the state of being located at the center line of the wellhead to the state of the second-level platform. The specific process is as follows:

[0012] After the drilling rig's swimming system lifts the drilling column a certain distance from the joint, the lower manipulator pushes the lower part of the drilling column from the wellhead center line to above the column relay support seat on the front side of the wellhead; the lifting ring pushes the upper part of the drilling column into the column relay clamping clamp assembly on the second-level platform in front of the wellhead, the clamping clamp clamps the drilling column, the drilling rig's swimming system is lowered, the drilling column seat is placed on the column relay support seat, the drilling rig's swimming system continues to be lowered, the hydraulic elevator opens, the lifting ring is retracted, and the swimming system descends to lift the next column; the pipe laying device aligns the drilling column and buckles it with the drill pipe body under the column joint, the clamping clamp of the column relay clamping clamp assembly opens, the pipe laying device lifts the column, and the drilling column is arranged into the second-level platform by moving in the front, rear, left and right directions.

[0013] The process of taking, placing and transferring the drilling column when drilling is as follows:

[0014] This process is the process from the drilling column being discharged in the second-level platform to being located at the center line of the wellhead, as follows:

[0015] The pipe laying device lifts the drilling column from the discharged state of the second-layer platform, and lifts the drilling column to the column relay clamping clamp assembly at the front side of the wellhead by moving forward, backward, left and right. The lower part of the column is placed on the column relay support seat, and the clamping clamp of the column relay clamping clamp assembly clamps the drilling column; the lifting ring extends forward until the drilling column enters the hydraulic elevator, and the hydraulic elevator is buckled. At the same time, the lower manipulator extends forward to the lower part of the drilling column, and the clamping clamp of the column relay clamping clamp assembly on the second-layer platform is released. The drilling column and the lifting ring are retracted to move the upper end of the drilling column to the center line of the wellhead, and the drilling rig's swimming system is lifted to make the drilling column leave the column relay support seat; the lower manipulator is retracted to make the lower part of the drilling column continue to move toward the wellhead under the action of its own weight until it is aligned with the wellhead column joint and the wellhead pipe string joint. The swimming system lowers the drilling column to make its lower joint contact with the wellhead column joint, and then use the make-up and break-out tool to make it buckle up, so that the drilling column is connected to the column in the wellbore, completing the work before the drilling column is lowered into the well.

[0016] The beneficial effects of the present invention are:

[0017] The present invention utilizes a column relay support seat and a column relay clamping jaw assembly to relay and store the drilling column outside the operating path area of ​​the drilling rig's swimming system. During the drilling operation, the drilling column is discharged into the second-layer platform by a pipe laying device. During the drilling operation, the drilling column is taken out from the second-layer platform by the pipe laying device, and then the drilling column is transported to the wellhead by a hydraulic elevator and a lower manipulator. This solves the problem that the pipe laying device and the drilling platform manipulator need to be handed over in the wellhead area and the pipe laying action takes too long to occupy the swimming operating space of the drilling rig's swimming system, thereby affecting the efficiency of drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the relay-type drilling column discharge device of the present invention;

[0019] Figure 2 This is a schematic diagram of the lower end of the drilling column entering the relay support seat when the relay-type drilling column discharge device of the present invention is in use;

[0020] Figure 3 This is a schematic diagram showing the upper end of a drilling column being clamped by a clamping jaw when the relay-type drilling column discharge device of the present invention is in use;

[0021] Figure 4 This is a schematic diagram of the pipe arrangement device aligning with the drilling column when the relay-type drilling column arrangement device of the present invention is in use;

[0022] Figure 5 It is a schematic diagram of the pipe arrangement device lifting the drilling column and entering the second-layer platform when the relay drilling column discharge device of the present invention is in use.

[0023] In the figure, 1. Column relay support seat, 2. Lower manipulator, 3. Column relay clamping clamp assembly, 4. Hydraulic elevator, 5. Pipe laying device. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The relay drilling column discharge device of the present invention has the following structure: Figure 1 As shown, it includes a column relay support seat 1 placed in front of the wellhead center of the drilling platform, a lower manipulator 2 placed on the back beam at the bottom of the derrick, a column relay clamping clamp assembly 3 placed in the middle of the second-level platform near the wellhead center line, a hydraulic elevator 4 suspended on the lifting ring, and a pipe arrangement device 5 placed above the second-level platform.

[0026] The pipe arrangement device 5 can move in the front and rear directions as well as in the left and right directions.

[0027] When using the relay-type drilling column discharge device, during the process of pulling out or drilling down, the lower joint seat of the drilling column is placed above the relay support seat 1, and the upper part of the drilling column is clamped by the clamping clamp head of the column relay clamping clamp head assembly 3 on the second-layer platform, and the drilling column is in a relay storage state; thereafter, during the process of pulling out, the drilling column is grabbed by the pipe discharge device 5 and discharged into the second-layer platform. During the process of drilling down, the hydraulic elevator 4 is used to buckle the drilling column, and with the cooperation of the lower manipulator 2, the drilling column is sent to the center line of the wellhead.

[0028] The drilling column relay is stored outside the operating path area of ​​the drilling rig travel system in front of the wellhead centerline.

[0029] The relay-type drilling column discharge method of the present invention adopts the above-mentioned relay-type drilling column discharge device. The drilling column discharge process when drilling is started is as follows:

[0030] This process is when the drilling column is lifted by the pipe arrangement device 5 from the state of being located at the center line of the wellhead to the state of the second floor platform. Figure 5 The drilling column is lifted by the pipe arrangement device 5 and moves on the second floor. Figure 1 Located at the center line of the wellhead Figure 5 The status process shown is as follows:

[0031] like Figure 2 As shown, after the drilling rig swimming system lifts the drilling column a certain distance away from the joint, the lower manipulator 2 pushes the lower part of the drilling column from the wellhead center line to the top of the wellhead front column relay support seat 1; Figure 3As shown, the lifting ring pushes the upper part of the drilling column into the column relay clamping clamp assembly 3 on the second-level platform in front of the wellhead. The clamping clamp clamps the drilling column, the drilling rig traveling system is lowered, the drilling column seat is placed on the column relay support seat 1, the drilling rig traveling system continues to be lowered, the hydraulic elevator 4 is opened, the lifting ring is retracted, and the traveling system moves downward to lift the next column; Figure 4 、 Figure 5 As shown, the pipe laying device 5 is aligned with the drilling column and is engaged with the drill pipe body below the column joint. The clamping jaws of the column relay clamping jaw assembly 3 are opened, and the pipe laying device 5 lifts the column and arranges the drilling column into the second-level platform by moving forward, backward, left, and right.

[0032] The process of taking, placing and transferring the drilling column when drilling is as follows:

[0033] This process is the process of the drilling column from the discharge state in the second-level platform to the state of being located at the center line of the wellhead. Figure 1 The drilling column is located at the center line of the wellhead when it is suspended by the hydraulic elevator 4. Figure 5 The discharge status shown on the second floor is Figure 1 The process of being located at the wellhead centerline is as follows:

[0034] like Figure 4 、 Figure 5 As shown, the pipe laying device lifts the drilling column from the second-floor platform in the discharge state, and lifts the drilling column to the column relay clamping clamp assembly 3 at the front side of the wellhead by moving in the forward, backward, left and right directions. The lower part of the column is placed on the column relay support seat 1, and the column relay clamping clamp assembly 3 clamps the drilling column with the clamp head; Figure 2 、 Figure 3 As shown, the lifting ring extends forward until the drilling column enters the hydraulic elevator 4, and the hydraulic elevator 4 is engaged. At the same time, the lower manipulator 2 extends forward to the lower part of the drilling column, and the column relay clamping clamp assembly 3 on the second-level platform clamps the clamp head to release the drilling column, and the lifting ring is retracted, so that the upper end of the drilling column is at the center line of the wellhead, and the drilling rig travel system is lifted up, so that the drilling column leaves the column relay support seat 1; Figure 2 、 Figure 1 As shown, the lower manipulator 2 is retracted, and the lower part of the drilling column continues to move toward the wellhead under the action of its own weight until it is aligned with the wellhead column joint and the wellhead pipe string joint. The swimming system lowers the drilling column so that its lower joint contacts the wellhead column joint, and then the make-up and break-out tool is used to make it, so that the drilling column is connected to the column in the wellbore, completing the work before the drilling column is lowered into the well.

[0035] The pipe laying device 5 of the present invention can also be used to perform pipe laying operations by installing a set of pipe laying devices under the second-floor platform.

[0036] The drilling column discharge process and method when pulling out of the drill hole are opposite to the drilling column taking-in, placing and moving process and method when drilling down.

[0037] The oil drilling rig structure of the present invention is applicable to oil drilling rigs and workover rigs of various specifications and drive types.

[0038] Example 1

[0039] The structure of the relay drilling column discharge device is as follows: Figure 1 As shown, it includes a column relay support seat 1 placed in front of the wellhead center of the drilling platform, a lower manipulator 2 placed on the back beam at the bottom of the derrick, a column relay clamping clamp assembly 3 placed in the middle of the second-level platform near the wellhead center line, a hydraulic elevator 4 suspended on the lifting ring, and a pipe arrangement device 5 placed above the second-level platform.

[0040] Example 2

[0041] The structure of the relay drilling column discharge device is as follows: Figure 1 As shown, it includes a column relay support seat 1 placed in front of the wellhead center of the drilling platform, a lower manipulator 2 placed at the back crossbeam of the lower part of the derrick, a column relay clamping clamp assembly 3 placed in the middle of the second-level platform near the wellhead centerline, a hydraulic elevator 4 suspended on the lifting ring and a pipe arrangement device 5 placed above the second-level platform. The pipe arrangement device 5 can move in the forward, backward and left and right directions. The drilling column relay is stored outside the operating path area of ​​the drilling rig swimming system in front of the wellhead centerline.

[0042] Example 3

[0043] The structure of the relay drilling column discharge device is as follows: Figure 1 As shown, it includes a column relay support seat 1 placed on the front side of the wellhead center of the drilling platform, a lower manipulator 2 placed on the back crossbeam of the lower part of the derrick, a column relay clamping clamp assembly 3 placed in the middle of the second-level platform near the wellhead center line, a hydraulic elevator 4 suspended on the lifting ring and a pipe laying device 5 placed above the second-level platform. The pipe laying device 5 can move in the front, rear and left and right directions. During the process of pulling out or drilling down, the lower joint seat of the drilling column is placed above the relay support seat 1, and the upper part of the drilling column is clamped by the clamping clamp of the column relay clamping clamp assembly 3 at the second-level platform, and the drilling column is in a relay storage state; thereafter, during the process of pulling out, the drilling column is grabbed by the pipe laying device 5 and placed into the second-level platform. During the process of drilling down, the hydraulic elevator 4 is used to buckle the drilling column, and the drilling column is sent to the wellhead center line with the cooperation of the lower manipulator 2.

[0044] Example 4

[0045] The relay drilling column discharge method, the drilling column discharge process when drilling is as follows:

[0046] This process is when the drilling column is lifted by the pipe arrangement device 5 from the state of being located at the center line of the wellhead to the state of the second floor platform. Figure 5 The drilling column is lifted by the pipe arrangement device 5 and moves on the second floor. Figure 1 Located at the center line of the wellhead Figure 5 The status process shown is as follows:

[0047] like Figure 2 As shown, after the drilling rig swimming system lifts the drilling column a certain distance away from the joint, the lower manipulator 2 pushes the lower part of the drilling column from the wellhead center line to the top of the wellhead front column relay support seat 1; Figure 3 As shown, the lifting ring pushes the upper part of the drilling column into the column relay clamping clamp assembly 3 on the second-level platform in front of the wellhead. The clamping clamp clamps the drilling column, the drilling rig traveling system is lowered, the drilling column seat is placed on the column relay support seat 1, the drilling rig traveling system continues to be lowered, the hydraulic elevator 4 is opened, the lifting ring is retracted, and the traveling system moves downward to lift the next column; Figure 4 、 Figure 5 As shown, the pipe laying device 5 is aligned with the drilling column and is engaged with the drill pipe body below the column joint. The clamping jaws of the column relay clamping jaw assembly 3 are opened, and the pipe laying device 5 lifts the column and arranges the drilling column into the second-level platform by moving forward, backward, left, and right.

[0048] The process of taking, placing and transferring the drilling column when drilling is as follows:

[0049] This process is the process of the drilling column from the discharge state in the second-level platform to the state of being located at the center line of the wellhead. Figure 1 The drilling column is located at the center line of the wellhead when it is suspended by the hydraulic elevator 4. Figure 5 The discharge status shown on the second floor is Figure 1 The process of being located at the wellhead centerline is as follows:

[0050] like Figure 4 、 Figure 5 As shown, the pipe laying device lifts the drilling column from the second-floor platform in the discharge state, and lifts the drilling column to the column relay clamping clamp assembly 3 at the front side of the wellhead by moving in the forward, backward, left and right directions. The lower part of the column is placed on the column relay support seat 1, and the column relay clamping clamp assembly 3 clamps the drilling column with the clamp head; Figure 2 、 Figure 3 As shown, the lifting ring extends forward until the drilling column enters the hydraulic elevator 4, and the hydraulic elevator 4 is engaged. At the same time, the lower manipulator 2 extends forward to the lower part of the drilling column, and the column relay clamping clamp assembly 3 on the second-level platform clamps the clamp head to release the drilling column, and the lifting ring is retracted, so that the upper end of the drilling column is at the center line of the wellhead, and the drilling rig travel system is lifted up, so that the drilling column leaves the column relay support seat 1; Figure 2 、 Figure 1As shown, the lower manipulator 2 is retracted, and the lower part of the drilling column continues to move toward the wellhead under the action of its own weight until it is aligned with the wellhead column joint and the wellhead pipe string joint. The swimming system lowers the drilling column so that its lower joint contacts the wellhead column joint, and then the make-up and break-out tool is used to make it, so that the drilling column is connected to the column in the wellbore, completing the work before the drilling column is lowered into the well.

Claims

1. Relay type drilling column discharge device, characterized in that: It comprises a column relay support seat (1) placed on the front side of the wellhead center of the drilling platform, a lower manipulator (2) placed on the back crossbeam of the lower part of the derrick, a column relay clamping clamp assembly (3) placed in the middle of the second-level platform near the wellhead center line, a hydraulic elevator (4) suspended on the lifting ring, and a pipe arrangement device (5) placed above the second-level platform; The pipe arrangement device (5) can move in the forward and backward directions as well as in the left and right directions; When using the relay-type drilling column discharge device, during the process of pulling out or drilling down, the lower joint seat of the drilling column is placed above the relay support seat (1), and the upper part of the drilling column is clamped by the clamping head of the column relay clamping head assembly (3) at the second-level platform, and the drilling column is in a relay storage state; thereafter, during the process of pulling out, the drilling column is grabbed by the pipe discharge device (5) and discharged into the second-level platform. During the process of drilling down, the drilling column is buckled by the hydraulic elevator (4), and the drilling column is sent to the wellhead center line with the cooperation of the lower manipulator (2).

2. The relay type drilling column discharge device according to claim 1, characterized in that: The pipe arrangement device (5) is installed below the second-floor platform.

3. The relay type drilling column discharge device according to claim 1, characterized in that: The location where the drilling column relay is stored is outside the running path area of ​​the drilling rig swimming system at the front side of the wellhead center line of the wellhead.

4. The relay drilling column discharge method is characterized in that: Using the relay-type drilling column discharge device described in claim 1, the drilling column discharge process when drilling is started is as follows: This process is the process of the drilling column being lifted by the pipe arrangement device (5) from the state of being located at the center line of the wellhead to the state of being located at the second floor platform. The specific process is as follows: After the drilling rig swimming system lifts the drilling column away from the joint by a certain distance, the lower manipulator (2) pushes the lower part of the drilling column from the wellhead centerline to the top of the column relay support seat (1) at the front of the wellhead; the lifting ring pushes the upper part of the drilling column into the column relay clamping clamp head assembly (3) on the second-layer platform at the front of the wellhead, and the clamping clamp head clamps the drilling column. The drilling rig swimming system is lowered, and the drilling column seat is placed on the column relay support seat (1). The drilling rig swimming system continues to be lowered, the hydraulic elevator (4) is opened, the lifting ring is retracted, and the swimming system goes down to lift the next column; the pipe arrangement device (5) is aligned with the drilling column and buckled onto the drill pipe body below the column joint, the clamping clamp head of the column relay clamping clamp head assembly (3) is opened, and the pipe arrangement device (5) lifts the column and arranges the drilling column into the second-layer platform by moving in the forward, backward, left, and right directions; The process of taking, placing and transferring the drilling column when drilling is as follows: This process is the process from the drilling column being discharged in the second-level platform to being located at the center line of the wellhead, as follows: The pipe arrangement device lifts the drilling column from the discharge state of the second-layer platform, and lifts the drilling column to the column relay clamping clamp assembly (3) at the front side of the wellhead by moving in the forward, backward, left and right directions. The lower part of the column is placed on the column relay support seat (1), and the column relay clamping clamp assembly (3) clamps the drilling column with the clamp head; the lifting ring extends forward until the drilling column enters the hydraulic elevator (4), and the hydraulic elevator (4) is buckled. At the same time, the lower manipulator (2) extends forward to the lower part of the drilling column, and the column relay clamping clamp assembly (3) on the second-layer platform is ) The clamping clamp head releases the drilling column, the lifting ring is retracted, and the upper end of the drilling column is moved to the center line of the wellhead. The drilling rig swimming system is lifted up, and the drilling column is separated from the column relay support seat (1); the lower manipulator (2) is retracted, and the lower part of the drilling column continues to move toward the wellhead under the action of its own weight until it is aligned with the wellhead column joint and the wellhead pipe column joint. The swimming system lowers the drilling column so that its lower joint contacts the wellhead column joint, and then uses the make-up and break-out tool to make the drilling column connected to the column in the wellbore, completing the work before the drilling column is lowered into the well.

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