Four-single-pipe-column conveying device and conveying method

Abstract

The conveying device comprises a frame body, a V-shaped groove is formed in the top of the frame body in the length direction of the frame body, a pushing mechanism located above the V-shaped groove is arranged on the frame body in a sliding mode, and the pushing mechanism can push the pipe columns located in the middle of the V-shaped groove to move; a plurality of tubular column operation modules are arranged in the V-shaped groove, each tubular column operation module comprises a separating mechanism, a single rolling-in mechanism and a kicking-out mechanism which are movably inlaid in the V-shaped groove in pairs in a staggered mode, and each pair of separating mechanism, single rolling-in mechanism and kicking-out mechanism can turn upwards towards the inclined faces of the two sides of the V-shaped groove. And inner stop pins capable of extending out of the inclined surfaces are embedded on the inclined surfaces on the two sides of the V-shaped groove. The pipe column conveying device for the power catwalk aims at solving the problems that an existing pipe column conveying device for the power catwalk can only achieve conveying of one or three pipe columns, and two or four pipe columns are difficult to separate, and the efficiency of the power catwalk is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling and development, and in particular relates to a four-single-pipe-string conveying device and a conveying method. Background Art

[0002] On existing land oil drilling rigs, power catwalks have gradually replaced conventional catwalks, and the application of power catwalks is becoming more and more common. The function of the power catwalk is to transport the pipe string in both directions between the yard area and the drilling platform. The equipment has been automated, and the entire process does not require human intervention, which greatly reduces the labor intensity of drilling workers and reduces operational risks. In recent years, with the exploration and development of deep wells and ultra-deep wells, the four-single drilling process is gradually being promoted and applied. Compared with the conventional three-single drilling process, the four-single drilling process has greatly improved the drilling speed, comprehensive efficiency and drilling cycle. However, in each operation cycle of most power catwalks, the pipe string conveying device can only convey one pipe string (drill pipe, drill collar, casing, etc.), and the operating efficiency is relatively low. The efficiency of the power catwalk has become the key to improving the efficiency of the pipe string automation system.

[0003] In order to solve the problem of low efficiency of existing power catwalks, a pipe string conveying device for power catwalks that can convey three drill pipes at a time has been launched. However, this type of pipe string conveying device can only convey one or three drill pipes. It is difficult to separate two or four pipe strings, especially for the application of four-single-pipe drilling technology in deep wells and ultra-deep wells. The pipe string conveying device that can convey three pipes at a time can no longer meet the use requirements. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a four-single-pipe-string conveying device and a conveying method, which aims to solve the problem that the existing pipe-string conveying device for power catway can only realize the conveyance of single or three pipe strings and it is difficult to separate two or four pipe strings, thereby improving the efficiency of the power catway.

[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0006] The push mechanism can push the pipe column located in the middle of the V-shaped groove to move; a plurality of pipe column operation modules are arranged in the V-shaped groove, and each group of pipe column operation modules comprises a separation mechanism, a single rolling-in mechanism and a kicking-out mechanism which are staggered and movably embedded in the V-shaped groove in pairs. Each pair of the separation mechanism, the single rolling-in mechanism and the kicking-out mechanism can be turned upward toward the inclined surfaces on both sides of the V-shaped groove, and the inclined surfaces on both sides of the V-shaped groove are embedded with inner stop pins which can extend out of the inclined surfaces; after the separation mechanism is turned upward, the pipe column can be separated to the inclined surfaces on both sides of the V-shaped groove, and the inner stop pins can limit the pipe columns on the inclined surfaces on both sides after extending out of the inclined surfaces, and after the single rolling-in mechanism is turned upward, the single pipe column against the inner stop pin can be rolled into the middle of the V-shaped groove; after the kicking-out mechanism is turned upward, the pipe column in the V-shaped groove can be kicked out of the V-shaped groove.

[0007] Furthermore, the pushing mechanism includes a portal frame slidably arranged on the frame body, a push plate connected to the lower end surface of the portal frame crossbeam and facing the middle position of the V-shaped groove, and a driving component for driving the portal frame to reciprocate along the length direction of the V-shaped groove.

[0008] Furthermore, the driving assembly includes a driving wheel arranged at one end of both sides of the frame, a passive wheel arranged at the other end of both sides of the frame, and a transmission chain connecting the driving wheel and the passive wheel on each side. Chain connecting frames are arranged on both sides of the portal frame near the bottom, and the chain connecting frames on both sides are correspondingly connected to the transmission chain.

[0009] Furthermore, the separation mechanism includes a separation plate and a first telescopic drive device, the separation plate is movably embedded in the V-shaped groove and is hinged to the frame, one end of the first telescopic drive device is hinged to the frame, and the other end is hinged to the separation plate; the upper end surface of the separation plate is V-shaped, and the non-hinged side of the separation plate is a convex arc surface.

[0010] Furthermore, the single rolling-in mechanism includes a seesaw and a second telescopic drive device, the seesaw is movably embedded in the V-shaped groove and is hinged to the frame, one end of the second telescopic drive device is hinged to the frame, and the other end is hinged to the seesaw; the lifting part of the seesaw can roll the pipe column resting on the inner stop pin into the middle of the V-shaped groove.

[0011] Furthermore, the kick-out mechanism includes a kick-out plate matching the V-shaped groove and a third telescopic drive device, the kick-out plate is movably embedded in the V-shaped groove, one end of the kick-out plate is hinged to the frame, one end of the third telescopic drive device is hinged to the frame, and the other end is hinged to the kick-out plate.

[0012] Furthermore, outer stop pins capable of extending out of the top of the V-shaped groove are embedded on the top of both sides of the V-shaped groove.

[0013] Furthermore, a four-bar anti-falling mechanism is arranged on both sides of the frame body, and the four-bar anti-falling mechanism includes a power rod, a first swing rod, a cross rod and a second swing rod, both ends of the cross rod are respectively hinged to one end of the first swing rod and the second swing rod, the other ends of the first swing rod and the second swing rod are hinged to the frame body, one end of the power rod is hinged to the frame body, and the other end is hinged to the first swing rod.

[0014] Furthermore, limited seats are provided on the inclined surfaces on both sides of the V-shaped groove near the tail position.

[0015] A four-single-pipe-string conveying method adopts the four-single-pipe-string conveying device, including a drill delivery operation and a drill throwing operation, wherein the drill delivery operation includes:

[0016] Step 1), placing the first set of two pipe strings into the V-shaped groove;

[0017] Step 2), controlling the separation mechanism to flip upward to separate the first group of two pipe strings onto one side slope of the V-shaped groove;

[0018] Step 3), sending the second group of two pipe strings into the V-shaped groove and being blocked by the upwardly flipped separation mechanism on the other side slope of the V-shaped groove;

[0019] Step 4), controlling the inner stop pins on the inclined surfaces on both sides of the V-shaped groove to extend out of the inclined surfaces to limit the position of the pipe columns on the inclined surfaces on both sides;

[0020] Step 5), controlling the single-tube rolling mechanism to flip upward to roll the single tube column on one side or the other side of the inclined surface against the inner stop pin into the middle of the V-shaped groove;

[0021] Step 6), controlling the pushing mechanism to push the single pipe string rolled into the middle of the V-shaped groove to move to the wellhead;

[0022] Step 7), after the single pipe string moved to the wellhead is lifted off the V-shaped groove, the pushing mechanism is controlled to return to the initial position, and steps 5) to 7) are repeated until all the pipe strings on the inclined surfaces on both sides are transported;

[0023] The drilling operation includes:

[0024] Step ①, controlling the pushing mechanism to move to a position in the V-shaped groove close to the wellhead, placing one end of the first single pipe string against the pushing mechanism, and controlling the pushing mechanism to retreat until the first single pipe string completely falls into the V-shaped groove;

[0025] Step ②, controlling the separation mechanism to flip upward to separate the first single pipe string onto one side slope of the V-shaped groove;

[0026] Step ③, controlling the inner stop pin on the inclined surface on one side of the V-shaped groove to extend out of the inclined surface to limit the first single pipe column;

[0027] Step ④, controlling the pushing mechanism to move to a position in the V-shaped groove close to the wellhead, placing one end of the second single pipe string against the pushing mechanism, and controlling the pushing mechanism to retreat until the second single pipe string completely falls into the V-shaped groove;

[0028] Step ⑤, controlling the inner stop pin on the inclined surface on one side of the V-shaped groove to retract, so that the first single pipe string falls to contact with the second single pipe string;

[0029] Step ⑥, controlling the separation mechanism to flip upward to separate the first single pipe string and the second single pipe string onto one side slope of the V-shaped groove;

[0030] Step 7, controlling the inner stop pin on the inclined surface on one side of the V-shaped groove to extend out of the inclined surface to limit the first single pipe column and the second single pipe column;

[0031] Step ⑧, according to the operating principle of steps ① to ⑦, the third single pipe string and the fourth single pipe string are limited by the inner stop pin on the inclined surface on the other side of the V-shaped groove;

[0032] Step ⑨, controlling the inner stop pins on the inclined surfaces on both sides of the V-shaped groove to retract, so that the first, second, third and fourth single pipe columns contact and fall into the V-shaped groove;

[0033] Step (10), controlling the kicking mechanism to flip upward to kick the first, second, third and fourth single pipe strings in the V-shaped groove out of the V-shaped groove.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] The present invention provides a four-single pipe string conveying device. During the drilling operation, the separation mechanism that can be flipped upward can be used to separate and block the two pipe strings on the inclined surfaces on both sides of the V-shaped groove, and the inner stop pins that can be extended from the inclined surfaces on both sides can be used to temporarily limit the pipe strings on the inclined surfaces on both sides. The single pipe string against the inner stop pin can be rolled into the middle of the V-shaped groove in cooperation with the single rolling mechanism. Finally, the single pipe string rolled into the middle of the V-shaped groove is pushed to the wellhead by the pushing mechanism. At the same time, during the drilling operation, the separation mechanism, the inner stop pin, the single rolling mechanism and the kicking mechanism can be used to kick out up to four pipe strings in the V-shaped groove at a time. The present invention can accommodate up to four pipe strings. The power catwalk can convey four pipe strings to the drilling platform in one operation cycle, which can greatly reduce the number of catwalk lifting times, is energy-saving and efficient, and has high pipe string conveying efficiency, meeting the requirements of the four-single drilling process. In addition, the number of pipe strings transported by the four-single-pipe-string transport device can be adjusted according to the on-site working conditions. It can handle one, two, three or four pipe strings, which is flexible and convenient.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 is a front view of a single pipe string conveying device according to a fourth embodiment of the present invention;

[0039] Figure 2 is a top view of a single pipe string conveying device according to a fourth embodiment of the present invention;

[0040] Figure 3 It is a schematic diagram of the structure of the pushing mechanism in the single pipe string conveying device in the fourth embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of a separation mechanism in a single pipe string conveying device in a fourth embodiment of the present invention;

[0042] Figure 5 Schematic diagram of a single pipe rolling mechanism in a single pipe conveying device according to a fourth embodiment of the present invention;

[0043] Figure 6 Schematic diagram of a kick-out mechanism in a single pipe string conveying device according to a fourth embodiment of the present invention;

[0044] Figure 7Schematic diagram of an inner stop pin in a single pipe string conveying device according to a fourth embodiment of the present invention;

[0045] Figure 8 Schematic diagram of an outer stop pin in a single pipe string conveying device according to a fourth embodiment of the present invention;

[0046] Fig. 9 1 is a schematic diagram of the structure of a four-link anti-falling mechanism in a single pipe string conveying device in a fourth embodiment of the present invention;

[0047] Fig.10 This is a schematic diagram of a drilling process of a single pipe string conveying device according to a fourth embodiment of the present invention;

[0048] Fig.11 1. It is a schematic diagram of the drilling process of the single pipe string conveying device according to the fourth embodiment of the present invention;

[0049] Fig.12 1 is a schematic diagram of the structure of a single pipe column conveying device according to a fourth embodiment of the present invention on a hydraulic cylinder lifting power catwalk;

[0050] Fig.13 It is a schematic diagram of the structure of a single pipe column conveying device according to a fourth embodiment of the present invention on a wire rope lifting power catwalk.

[0051] In the figure: 1-frame;

[0052] 2-push mechanism; 200-door frame; 201-push plate; 202-driving wheel; 203-passive wheel; 204-transmission chain; 205-chain connecting frame; 206-protective cover;

[0053] 3-separation mechanism; 300-separation plate; 301-first telescopic driving device; 3-L-left separation mechanism; 3-R-right separation mechanism;

[0054] 4-single rolling mechanism; 400-rocker; 401-second telescopic drive device; 4-L-left single rolling mechanism; 4-R-right single rolling mechanism;

[0055] 5-kick-out mechanism; 500-kick-out plate; 501-third telescopic drive device;

[0056] 6-inner stop pin; 6-L-left inner stop pin; 6-R-right inner stop pin; 7-outer stop pin; 7-L-left outer stop pin; 7-R-right outer stop pin;

[0057] 8-four-link anti-drop mechanism; 800-power rod; 801-first swing rod; 802-cross rod; 803-second swing rod; 9-limiting seat;

[0058] 13- tilting mechanism (catwalk pipe rack); 14- pipe column I; 15- pipe column II; 16- pipe column III; 17- pipe column IV; 18- pipe column V; 19- pipe column VI; 20- pipe column VII; 21- pipe column VIII; 22- pull-up catwalk base; 23- bracket; 24- ramp; 25- drilling platform; 26- four single pipe column conveying device; 27- lifting catwalk base; 28- rear lifting cylinder; 29- lifting bracket I; 30- front lifting cylinder; 31a- lifting bracket II. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Combination Figure 1 and Figure 2 As shown, a four-single-pipe conveying device according to an embodiment of the present invention comprises a frame 1, a V-shaped groove is provided on the top of the frame 1 along its length direction, a pushing mechanism 2 is slidably provided on the frame 1 and is located above the V-shaped groove, and the pushing mechanism 2 can push the pipe located in the middle of the V-shaped groove to move, that is, the pushing mechanism 2 can reciprocate along the V-shaped groove. Figure 2As shown, multiple groups of pipe column operation modules are arranged in the V-shaped groove, and each group of pipe column operation modules includes a separation mechanism 3, a single rolling mechanism 4 and a kicking mechanism 5 which are staggered and movably embedded in the V-shaped groove in pairs, and each pair of separation mechanisms 3, single rolling mechanism 4 and kicking mechanism 5 can be turned upward toward the inclined surfaces on both sides of the V-shaped groove, and the inclined surfaces on both sides of the V-shaped groove are embedded with inner stop pins 6 that can extend out of the inclined surfaces. To expand, each group of pipe column operation modules includes two separation mechanisms 3, two single rolling mechanisms 4 and two kicking mechanisms 5, respectively. More specifically, one separation mechanism 3 can be turned upward toward the inclined surface on one side of the V-shaped groove, and the other separation mechanism 3 can be turned upward toward the inclined surface on the other side of the V-shaped groove; similarly, one single rolling mechanism 4 can be turned upward toward the inclined surface on one side of the V-shaped groove, and the other single rolling mechanism 4 can be turned upward toward the inclined surface on the other side of the V-shaped groove; one kicking mechanism 5 can be turned upward toward the inclined surface on one side of the V-shaped groove, and the other kicking mechanism 5 can be turned upward toward the inclined surface on the other side of the V-shaped groove. Among them, after the separation mechanism 3 is flipped upward, it can separate the pipe column to the inclined surfaces on both sides of the V-shaped groove. After the inner stop pin 6 extends out of the inclined surface, it can limit the position of the pipe columns on the inclined surfaces on both sides. After the single rolling mechanism 4 is flipped upward, it can roll the single pipe column against the inner stop pin 6 into the middle of the V-shaped groove; after the kicking mechanism 5 is flipped upward, it can kick the pipe column in the V-shaped groove out of the V-shaped groove. It should be noted that the matching number of the pipe column operation module can be determined according to the length of the frame 1, such as Figure 1 and Figure 2 As shown, the conveying device of this embodiment is equipped with two sets of pipe column operation modules.

[0061] In one embodiment, combining 1 to Figure 3 As shown, the pushing mechanism 2 includes a portal frame 200 slidably disposed on the frame body 1, a push plate 201 connected to the lower end surface of the cross beam of the portal frame 200 and facing the middle position of the V-shaped groove, and a driving assembly for driving the portal frame 200 to reciprocate along the length direction of the V-shaped groove. Specifically, the driving assembly drives the portal frame 200 to reciprocate along the length direction of the frame body 1, and the portal frame 200 drives the push plate 201 to move together when moving. Because the push plate 201 faces the middle position of the V-shaped groove, it can be ensured that only the pipe column in the middle of the V-shaped groove of the frame body 1 can be pushed each time, and the pipe columns stored on the inclined surfaces on both sides of the V-shaped groove can pass through the notch between the portal frame 200 and the push plate 201.

[0062] Better, combined Figure 1As shown, the driving assembly includes a driving wheel 202 provided at one end of both sides of the frame 1, a driven wheel 203 provided at the other end of both sides of the frame 1, and a transmission chain 204 connecting the driving wheel 202 and the driven wheel 203 on each side. Chain connecting frames 205 are provided on both sides of the portal frame 200 near the bottom, and the chain connecting frames 205 on both sides are correspondingly connected to the transmission chain 204. In other words, a chain connecting frame 205 is provided at the bottom of the left and right sides of the portal frame 200, respectively, and a group of driving wheels 202, driven wheels 203 and transmission chains 204 are installed on the left and right sides of the frame 1, respectively. The driving wheel 202 can rotate forward and reverse, and under the rotation of the driving wheel 202, the transmission chain 204 is rotated, thereby driving the portal frame 200 to move together.

[0063] Exemplarily, the driving wheel 202 may be driven by a hydraulic motor or an electric motor, and the transmission chain 204 may also be replaced by a steel wire rope.

[0064] Preferably, Figure 3 As shown, a protective cover 206 is also installed on the portal frame 200 .

[0065] In one embodiment, if Figure 4 As shown, the separation mechanism 3 includes a separation plate 300 and a first telescopic drive device 301. The separation plate 300 is movably embedded in the V-shaped groove and hinged to the frame 1. One end of the first telescopic drive device 301 is hinged to the frame 1, and the other end is hinged to the separation plate 300. The upper end surface of the separation plate 300 is V-shaped, and the non-hinged side of the separation plate 300 is a convex arc surface. Specifically, the separation plate 300 can swing up and down under the action of the first telescopic drive device 301. The working side of the separation plate 300 is V-shaped, which can move the pipe column in the V-shaped groove of the frame to the inclined surface on one side of the V-shaped groove. The non-working side of the separation plate 300 is an arc surface, which can block the two pipe columns that roll in for the second time on the inclined surface on the other side of the V-shaped groove. Exemplarily, the first telescopic drive device 301 is driven by a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a motor.

[0066] In one embodiment, if Figure 5 As shown, the single rolling mechanism 4 includes a seesaw 400 and a second telescopic drive device 401. The seesaw 400 is movably embedded in the V-shaped groove and hinged to the frame 1. One end of the second telescopic drive device 401 is hinged to the frame 1, and the other end is hinged to the seesaw 400. The lifting part of the seesaw 400 can roll the pipe column against the inner stop pin 6 into the middle of the V-shaped groove. Specifically, the seesaw 400 can swing up and down under the action of the second telescopic drive device 401, and the pipe column above the seesaw 400 is flipped into the V-shaped groove of the frame through the up and down swinging of the seesaw 400. Preferably, the length of the seesaw 400 is adjustable to adapt to pipe columns of different sizes, ensuring that only one pipe column is flipped in at a time. Exemplarily, the second telescopic drive device 401 is driven by a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a motor.

[0067] In one embodiment, if Figure 6 As shown, the kick-out mechanism 5 includes a kick-out plate 500 matched with the V-shaped groove and a third telescopic drive device 501. The kick-out plate 500 is movably embedded in the V-shaped groove. One end of the kick-out plate 500 is hinged to the frame 1. One end of the third telescopic drive device 501 is hinged to the frame 1, and the other end is hinged to the kick-out plate 500. Specifically, the kick-out plate 500 can swing up and down under the action of the third telescopic drive device 501, and the kick-out plate 500 can flip 4 pipe columns into the frame V-shaped groove at one time. Exemplarily, the third telescopic drive device 501 is driven by a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a motor.

[0068] In one embodiment, if Figure 7 As shown, the bottom of the inner stop pin 6 is controlled by a telescopic drive device. When the separation mechanism 3 moves the pipe column to the inclined surface of the V-shaped groove, the inner stop pin 6 extends to block the pipe column on the inclined surface of the V-shaped groove to prevent the pipe column from sliding down to the middle position of the V-shaped groove.

[0069] As a more preferred embodiment, Figure 1 and Figure 8 As shown, outer stop pins 7 that can extend out of the top of the V-shaped groove are embedded on the top of both sides of the V-shaped groove. After the outer stop pins 7 are extended, when the pipe column rolls into the V-shaped groove, it can prevent the pipe column from rolling out from the opposite side due to excessive rolling force. For example, the bottom of the outer stop pin 7 is controlled by a telescopic drive device, and the telescopic drive device can be driven by a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a motor.

[0070] As a more preferred embodiment, Figure 1 , Figure 2 and Fig. 9 As shown, a four-link anti-falling mechanism 8 is arranged on both sides of the frame 1, and the four-link anti-falling mechanism 8 includes a power rod 800, a first swing rod 801, a cross bar 802 and a second swing rod 803. The two ends of the cross bar 802 are respectively hinged to one end of the first swing rod 801 and the second swing rod 803, and the other ends of the first swing rod 801 and the second swing rod 803 are hinged to the frame 1. One end of the power rod 800 is hinged to the frame 1, and the other end is hinged to the first swing rod 801. Specifically, before the four-single pipe column conveying device is lifted, the four-link anti-falling mechanism 8 is controlled to be lifted, and the cross bar 802 is higher than the upper plane of the frame 1 to prevent the pipe column from falling from the frame 1 after an accidental tilt; when the frame 1 is lowered to the lowest position, the four-link anti-falling mechanism 8 is controlled to fall and retract, and the cross bar 802 is lower than the upper plane of the frame 1, so that the pipe column can roll in or out without obstruction.

[0071] As a more preferred embodiment, Figure 2As shown, a limit seat 9 is provided on the inclined surfaces on both sides of the V-shaped groove near the tail position. Specifically, the limit seat 9 is installed at the tail of the frame 1, one on each side, and the position can be adjusted according to the length of different pipe strings. The adjustment method can be manual or hydraulic cylinder driven automatic adjustment, which is used to block the lower end of the pipe string to prevent the pipe string from sliding down.

[0072] Reference Fig.12 and Fig.13 As shown, the four-single-pipe-column conveying device of the present invention can be matched with various structural forms of power catwalks such as a lifting type power catwalk and a wire rope lifting type power catwalk.

[0073] The working principle of the present invention is described in more detail below with reference to the accompanying drawings.

[0074] This embodiment takes the delivery of 4 pipe strings (the pipe strings enter from the left side of the device) as an example to illustrate the specific drilling workflow, which specifically includes the following steps:

[0075] Step 1: Reference Fig.10 a and 10b, the right outer stop pin 7-R extends, and the left tilt mechanism 13 is actuated to roll the pipe column I14 and the pipe column II15 into the V-shaped groove of the frame body 1;

[0076] Step 2: Reference Fig.10 c, the right separation mechanism 3-R is actuated, and the separation plate 300 moves the pipe column I14 and the pipe column II15 to the right side of the V-shaped groove of the frame 1;

[0077] Step 3: Reference Fig.10 d. The right separation mechanism 3-R remains stationary, and the left tilting mechanism 13 is actuated again to roll the pipe column III16 and the pipe column IV17 into the V-shaped groove of the frame body 1. Under the blocking of the separation plate 300, the pipe column III16 and the pipe column IV17 are isolated on the left side of the V-shaped groove of the frame body 1;

[0078] Step 4: Reference Fig.10 e and 10f, the left inner stop pin 6-L and the right inner stop pins 6-R extend to block the pipe column I14 and pipe column II15 as well as pipe column III16 and pipe column IV17 on the left and right sides of the V-shaped groove of the frame body 1 respectively, the right separation mechanism 3-R is actuated, the separation plate 300 is retracted to the initial position, the left outer stop pin 7-L, the right outer stop pin 7-R and the left and right four-link anti-drop mechanism 8 extend to prevent the pipe column from accidentally falling off from the frame body 1, and the loading operation of the four pipe columns is completed at this time;

[0079] Step 5: Lift or pull the four-piece pipe conveying device to the height of the drilling floor;

[0080] Step 6: Reference Fig.10g and 10h, the right single rolling mechanism 4-R is actuated, the seesaw 400 extends and then retracts to flip the pipe column II15 into the middle position of the V-shaped groove of the frame 1, and the pipe column I14 slides down onto the right stop pin 6-R under the action of its own weight;

[0081] Step 7: Reference Fig.10 i. The pushing mechanism 2 pushes the pipe string II15 in the V-shaped groove to the wellhead (rat hole) and is then lifted away by the traveling crane system. At the same time, the pushing mechanism 2 retreats to the initial position, completing the transportation operation of the first pipe string;

[0082] Step 8: Reference Fig.10 j and 10k, the left single rolling mechanism 4-L is actuated, the seesaw 400 extends and then retracts to roll the pipe string III16 into the middle position of the V-shaped groove of the frame 1, and the pipe string IV17 slides down onto the left stop pin 6-L under the action of its own weight; the pushing mechanism 2 pushes the pipe string III16 in the V-shaped groove to the wellhead (rat hole) and is then lifted away by the traveling crane system, and at the same time the pushing mechanism 2 retreats to the initial position, completing the conveying operation of the second pipe string;

[0083] Step 9: Repeat the above process, the left single rolling mechanism 4-L operates again, the seesaw 400 extends and then retracts to flip the pipe string IV17 into the middle position of the V-groove of the frame 1; the pushing mechanism 2 pushes the pipe string IV17 in the V-groove to the wellhead (rat hole) and is lifted up by the traveling crane system, and the pushing mechanism 2 retreats to the initial position at the same time, completing the transportation operation of the third pipe string; the right single rolling mechanism 4-R operates again, the seesaw 400 extends and then retracts to flip the pipe string I14 into the middle position of the V-groove of the frame 1; the pushing mechanism 2 pushes the pipe string I14 in the V-groove to the wellhead (rat hole) and is lifted up by the traveling crane system, and the pushing mechanism 2 retreats to the initial position at the same time, completing the transportation operation of the fourth pipe string;

[0084] It should be understood that the order of tubular column transportation can be adjusted according to the actual situation on site, and can be specifically: 1) tubular column II→tubular column III→tubular column IV→tubular column I; or, 2) tubular column II→tubular column III→tubular column I→tubular column IV; or, 3) tubular column II→tubular column I→tubular column III→tubular column IV; or, 4) tubular column III→tubular column IV→tubular column II→tubular column I; or, 5) tubular column III→tubular column II→tubular column IV→tubular column I; or, 6) tubular column III→tubular column II→tubular column I→tubular column IV;

[0085] Step 10: The single-pipe delivery device of the fourth embodiment is lowered to the ground, and the inner stop pin 6, the outer stop pin 7 and the four-link anti-drop mechanism 8 are all retracted, thereby completing the entire drill delivery process. Repeating the above steps can complete the continuous drill delivery operation.

[0086] This embodiment takes the delivery of 4 pipe strings (the pipe strings enter from the left side of the device) as an example to illustrate the specific drilling work process, which specifically includes the following steps:

[0087] Step 1: Reference Fig.11 a. The limit seat 9 is adjusted to a suitable position according to the length of the pipe string, and the left outer stop pin 7-L, the right outer stop pin 7-R and the four-link anti-drop mechanism 8 on the left and right sides are extended to lift or pull the four single pipe string conveying devices to the height of the drilling floor;

[0088] Step 2: Reference Fig.11 b. The pushing mechanism 2 moves to the front end of the frame 1, and the traveling lifting system places the pipe column V18 on the pushing mechanism 2. The traveling lifting system is operated to lower and the pushing mechanism 2 is operated to retreat at the same time, until the pipe column V18 completely falls into the V-shaped groove of the frame 1, and the pipe column V18 is separated from the traveling lifting system, and the pushing mechanism 2 is continued to retreat to the appropriate position at the front end of the limit seat 9;

[0089] Step 3: Reference Fig.11 c and 11d, the right separation mechanism 3-R is actuated, the separation plate 300 moves the pipe column V18 to the right side of the V-shaped groove of the frame body 1, the right inner stop pin 6-R extends, the right separation mechanism 3-R retracts, and the separation plate 300 retracts into the V-shaped groove;

[0090] Step 4: Reference Fig.11 e. The pushing mechanism 2 moves to the front end of the frame 1, and the traveling lifting system places the pipe column VI19 on the pushing mechanism 2. The traveling lifting system is operated to lower and the pushing mechanism 2 is operated to retreat at the same time, until the pipe column VI19 completely falls into the V-shaped groove of the frame 1, and the pipe column VI19 is separated from the traveling lifting system, and the pushing mechanism 2 is continued to retreat to the appropriate position at the front end of the limit seat 9;

[0091] Step 5: Reference Fig.11 f, 11g and 11h, the right inner stop pin 6-R is retracted, the pipe column V18 rolls into the middle of the V-shaped groove of the frame body 1, the right separation mechanism 3-R is actuated, the separation plate 300 simultaneously moves the pipe column V18 and the pipe column VI19 to the right side of the V-shaped groove of the frame body 1, the right inner stop pin 6-R is extended, the right separation mechanism 3-R is retracted, the separation plate 300 is retracted into the V-shaped groove, and at this time, the pipe column V18 and the pipe column VI19 are thrown onto the right inclined surface of the V-shaped groove of the frame body 1;

[0092] Step 7: Similar operation, throw the pipe column VII20 and the pipe column VIII21 onto the left slope of the V-shaped groove of the frame 1, as shown in FIG. Fig.11 As shown in i;

[0093] Step 8: Lower the four single pipe string conveying devices to the ground;

[0094] Step 9: Reference Fig.11j and 11k, the inner stop pin 6, the outer stop pin 7 and the four-link anti-falling mechanism 8 are all retracted, the kick-out mechanism 5 is actuated, the kick-out plate 500 flips the four pipe columns onto the pipe rack at the same time, the outer stop pin 7 and the four-link anti-falling mechanism 8 are extended, and the entire drilling process is completed. Repeat the above steps to complete the continuous drilling operation.

[0095] The four-pipe conveying device and conveying method provided by the present invention change the traditional conveying mode of conveying one pipe at a time, reduce the number of pipe conveying times, solve the problems of low conveying efficiency of power catwalks in the four-pipe drilling process and untimely conveying of pipes during coordinated operations. The four-pipe conveying device can adapt to power catwalks of different structural forms and to the use requirements of different drilling rigs, and has strong adaptability.

[0096] The pipe string transportation process of the present invention can also be applied to the three-single-pipe drilling process. It only needs to adjust the structure according to the size of the three-single-pipe strings to achieve the purpose of weight reduction and energy saving.

[0097] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0098] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0099] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0101] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A four-single-pipe-string conveying device, characterized in that: The invention comprises a frame (1), wherein a V-shaped groove is provided on the top of the frame (1) along its length direction, and a pushing mechanism (2) is slidably provided on the frame (1) and is located above the V-shaped groove, and the pushing mechanism (2) can push a pipe column located in the middle of the V-shaped groove to move; a plurality of groups of pipe column operation modules are arranged in the V-shaped groove, and each group of the pipe column operation modules comprises a separation mechanism (3), a single rolling-in mechanism (4) and a kicking-out mechanism (5) which are staggered and movably embedded in the V-shaped groove in pairs, and each pair of the separation mechanism (3), the single rolling-in mechanism (4) and the kicking-out mechanism (5) The ejection mechanism (5) can flip upwards toward the inclined surfaces on both sides of the V-shaped groove, and the inclined surfaces on both sides of the V-shaped groove are inlaid with inner stop pins (6) that can extend out of the inclined surfaces; after the separation mechanism (3) flips upwards, it can separate the pipe column to the inclined surfaces on both sides of the V-shaped groove, and after the inner stop pins (6) extend out of the inclined surfaces, they can limit the position of the pipe columns on the inclined surfaces on both sides; after the single rolling-in mechanism (4) flips upwards, it can roll the single pipe column against the inner stop pins (6) into the middle of the V-shaped groove; after the kick-out mechanism (5) flips upwards, it can kick the pipe column in the V-shaped groove out of the V-shaped groove.

2. A four-single-tube-string conveying device according to claim 1, characterized in that: The pushing mechanism (2) comprises a portal frame (200) slidably arranged on the frame body (1), a push plate (201) connected to the lower end surface of the crossbeam of the portal frame (200) and facing the middle position of the V-shaped groove, and a driving component for driving the portal frame (200) to reciprocate along the length direction of the V-shaped groove.

3. A four-single-tube-string conveying device according to claim 2, characterized in that: The driving assembly comprises a driving wheel (202) arranged at one end of both sides of the frame (1), a driven wheel (203) arranged at the other end of both sides of the frame (1), and a transmission chain (204) connecting the driving wheel (202) and the driven wheel (203) on each side, and chain connecting frames (205) are arranged on both sides of the portal frame (200) near the bottom, and the chain connecting frames (205) on both sides are correspondingly connected to the transmission chain (204).

4. A four-single-tube-string conveying device according to claim 1, characterized in that: The separation mechanism (3) comprises a separation plate (300) and a first telescopic drive device (301); the separation plate (300) is movably embedded in the V-shaped groove and is hinged to the frame (1); one end of the first telescopic drive device (301) is hinged to the frame (1), and the other end is hinged to the separation plate (300); the upper end surface of the separation plate (300) is V-shaped, and the non-hinged side of the separation plate (300) is a convex arc surface.

5. The four-single-pipe-string conveying device according to claim 1, characterized in that: The single rolling-in mechanism (4) comprises a seesaw (400) and a second telescopic drive device (401); the seesaw (400) is movably embedded in the V-shaped groove and is hinged to the frame (1); one end of the second telescopic drive device (401) is hinged to the frame (1), and the other end is hinged to the seesaw (400); the lifting portion of the seesaw (400) can roll the pipe column against the inner stop pin (6) into the middle of the V-shaped groove.

6. A four-single-pipe-string conveying device according to claim 1, characterized in that: The kick-out mechanism (5) comprises a kick-out plate (500) matched with the V-shaped groove and a third telescopic drive device (501); the kick-out plate (500) is movably embedded in the V-shaped groove; one end of the kick-out plate (500) is hinged to the frame (1); one end of the third telescopic drive device (501) is hinged to the frame (1), and the other end is hinged to the kick-out plate (500).

7. The four-single-pipe-string conveying device according to claim 1, characterized in that: External stop pins (7) capable of extending out of the top of the V-shaped groove are inlaid on the tops of both sides of the V-shaped groove.

8. The four-single-pipe-string conveying device according to claim 1, characterized in that: A four-link anti-falling mechanism (8) is arranged on both sides of the frame (1), and the four-link anti-falling mechanism (8) comprises a power rod (800), a first swing rod (801), a cross rod (802) and a second swing rod (803), the two ends of the cross rod (802) are respectively hinged to one end of the first swing rod (801) and the second swing rod (803), the other ends of the first swing rod (801) and the second swing rod (803) are hinged to the frame (1), and one end of the power rod (800) is hinged to the frame (1), and the other end is hinged to the first swing rod (801).

9. The four-single-tube-string conveying device according to claim 1, characterized in that: Limiting seats (9) are arranged on the inclined surfaces on both sides of the V-shaped groove near the tail position.

10. A method for transporting four single pipe strings, characterized in that: The four-single-pipe-string conveying device according to any one of claims 1 to 9 includes a drill delivery operation and a drill throwing operation, wherein the drill delivery operation includes: Step 1), placing the first set of two pipe strings into the V-shaped groove; Step 2), controlling the separation mechanism (3) to flip upward to separate the first group of two pipe columns onto one side slope of the V-shaped groove; Step 3), sending the second group of two pipe strings into the V-shaped groove and being blocked by the upwardly flipped separation mechanism (3) on the other side of the inclined surface of the V-shaped groove; Step 4), controlling the inner stop pins (6) on the inclined surfaces on both sides of the V-shaped groove to extend out of the inclined surfaces to limit the position of the pipe columns on the inclined surfaces on both sides; Step 5), controlling the single-piece rolling mechanism (4) to flip upwards and rolling the single pipe column on one or the other inclined surface against the inner stop pin (6) into the middle of the V-shaped groove; Step 6), controlling the pushing mechanism (2) to push the single pipe string rolled into the middle of the V-shaped groove to move to the wellhead; Step 7), after the single pipe string moved to the wellhead is lifted off the V-shaped groove, the pushing mechanism (2) is controlled to return to the initial position, and steps 5) to 7) are repeated until all the pipe strings on the inclined surfaces on both sides are transported; The drilling operation includes: Step ①, controlling the pushing mechanism (2) to move to a position in the V-shaped groove close to the wellhead, placing one end of the first single pipe string against the pushing mechanism (2), and controlling the pushing mechanism (2) to retreat until the first single pipe string completely falls into the V-shaped groove; Step ②, controlling the separation mechanism (3) to flip upwards and separate the first single pipe string onto a side slope of the V-shaped groove; Step ③, controlling the inner stop pin (6) on the inclined surface on one side of the V-shaped groove to extend out of the inclined surface to limit the position of the first single pipe column; Step ④, controlling the pushing mechanism (2) to move to a position in the V-shaped groove close to the wellhead, placing one end of the second single pipe string against the pushing mechanism (2), and controlling the pushing mechanism (2) to retreat until the second single pipe string completely falls into the V-shaped groove; Step ⑤, controlling the inner stop pin (6) on the inclined surface on one side of the V-shaped groove to retract, so that the first single pipe column falls to contact with the second single pipe column; Step ⑥, controlling the separation mechanism (3) to flip upward to separate the first single pipe string and the second single pipe string onto one side slope of the V-shaped groove; Step 7, controlling the inner stop pin (6) on the inclined surface on one side of the V-shaped groove to extend out of the inclined surface to limit the first single pipe column and the second single pipe column; Step ⑧, according to the operating principle of steps ① to ⑦, the third single pipe column and the fourth single pipe column are limited by the inner stop pin (6) on the inclined surface on the other side of the V-shaped groove; Step ⑨, controlling the inner stop pins (6) on the inclined surfaces on both sides of the V-shaped groove to retract, so that the first, second, third and fourth single pipe columns contact and fall into the V-shaped groove; Step ⑩, controlling the kicking mechanism (5) to flip upward to kick the first, second, third and fourth single pipe columns in the V-shaped groove out of the V-shaped groove.

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