Reciprocating type oil pipe catwalk

Abstract

The invention relates to the technical field of petroleum equipment, in particular to a reciprocating type oil pipe catwalk which comprises N guide rails, N is an integer larger than 1, and the N guide rails are arranged side by side. The tackles are arranged on the guide rails, the number of the tackles is N, and the N tackles and the N guide rails are arranged in a one-to-one correspondence mode; wherein the N pulleys are connected in series; and the two pulleys on the two adjacent guide rails are arranged in a staggered manner. According to the reciprocating type oil pipe catwalk, the N guide rails are arranged side by side, the tackles on the adjacent guide rails are connected in series and arranged in a staggered mode, the front tackle is used for conveying the oil pipe firstly, then the rear tackle is used for conveying the oil pipe, ground personnel do not need to walk along with the tackles when pulling and conveying the oil pipe, and the effect can be achieved within a small range; and the labor intensity of field operators is reduced, and the risk of waist injury of workers is reduced.

Description

Technical Field

[0001] This application relates to the technical field of oil equipment, and particularly relates to a reciprocating tubing catwalk. Background Art

[0002] Currently, in oilfield workover operations, the process requires that the tubing must not touch the ground and must be placed on a horizontal tubing bridge. During on-site operations, a pulley is used to transport the tubing, and ground personnel need to follow the tubing pulley back and forth for a long time every day, resulting in extremely high labor intensity and prone to causing waist injuries to employees.

[0003] Therefore, how to overcome the above technical defects has become a technical problem that urgently needs to be solved. Summary of the Invention

[0004] In view of this, this application provides a reciprocating tubing catwalk.

[0005] Specifically, this application is implemented through the following technical solutions:

[0006] This application provides a reciprocating tubing catwalk, including: guide rails, the number of guide rails is N, N is an integer greater than 1, and N guide rails are arranged side by side; pulleys, arranged on the guide rails, the number of pulleys is N, and N pulleys and N guide rails are arranged in one-to-one correspondence; among them, N pulleys are connected in series; two pulleys on adjacent two guide rails are arranged in a staggered manner.

[0007] The reciprocating tubing catwalk provided by this application is used to transport tubing. The reciprocating tubing catwalk includes guide rails and pulleys. The pulleys are used to transport tubing, and the guide rails serve as the tracks for the pulleys to move. Specifically, the number of guide rails and pulleys is the same, both are N, N is an integer greater than 1, N guide rails are arranged side by side, and one pulley is correspondingly arranged on each guide rail.

[0008] It should be noted that during oilfield workover operations, transporting tubing mainly means transporting the tubing from the tubing bridge end to the wellhead end, or transporting the tubing taken out of the wellhead back to the tubing bridge end. It can be understood that two pulleys on adjacent two guide rails are arranged in a staggered manner, and the front-back staggering distance between adjacent two pulleys can be adjusted as needed. When one pulley is located at the tubing bridge end, the adjacent pulley is located at the wellhead end. Since the pulleys are connected in series, when the pulley located at the tubing bridge end moves to the wellhead end, it can drive the adjacent pulley to move to the tubing bridge end. When N is equal to 2, 1 tubing can be transported away or back at a time. When N is equal to 4, 2 tubings can be transported away or back at a time. The number of N can be specifically selected according to the actual working needs.

[0009] The reciprocating tubing catwalk provided by the present application has N guide rails arranged side by side. A pulley is provided on each guide rail, and N pulleys are provided on N guide rails. The N pulleys are connected in series, and the pulleys on adjacent two guide rails are arranged in a staggered manner. The staggered pulleys perform a mechanical reciprocating motion. First, the tubing is transported by the pulley in the front, and then the tubing is transported by the pulley in the back, overcoming the problem in the related art that when using a single pulley to transport the tubing, the operator needs to follow the pulley back and forth, resulting in a large labor intensity. The N pulleys reciprocate on the track. When the ground personnel pull and send the tubing, they do not need to follow the pulley back and forth, which can be achieved within a small range, reducing the labor intensity of the on-site operators and the risk of lumbar injury to the workers.

[0010] In addition, the reciprocating tubing catwalk in the above technical solution provided by the present application may further have the following additional technical features:

[0011] In some embodiments, optionally, the guide rail includes a first track and a second track arranged side by side, and the pulley includes a first pulley and a second pulley; the first pulley is arranged on the first track and can slide along the first track; the second pulley is arranged on the second track and can slide along the second track; wherein, the first pulley and the second pulley are connected in series, and the first pulley and the second pulley are arranged in a staggered manner.

[0012] In some embodiments, optionally, the guide rail further includes a first baffle and a second baffle arranged oppositely, and the reciprocating tubing catwalk further includes: a first limiting rod, arranged between the first baffle and the second baffle; a second limiting rod, arranged between the first baffle and the second baffle, and the second limiting rod is arranged side by side with the first limiting rod to form the first track; a third limiting rod, arranged between the first baffle and the second baffle; a fourth limiting rod, arranged between the first baffle and the second baffle, and the fourth limiting rod is arranged side by side with the third limiting rod to form the second track.

[0013] In some embodiments, optionally, the reciprocating tubing catwalk further includes: a first fixed pulley, arranged on the first baffle and located between the first limiting rod and the second limiting rod; a second fixed pulley, arranged on the first baffle and located between the third limiting rod and the fourth limiting rod; a first rope, one end of the first rope is connected to the first end of the first pulley, and the other end of the first rope bypasses the first fixed pulley and the second fixed pulley and is then connected to the first end of the second pulley.

[0014] In some embodiments, optionally, the reciprocating tubing catwalk further includes: a third fixed pulley, arranged on the second baffle and located between the third limiting rod and the fourth limiting rod; a fourth fixed pulley, arranged on the second baffle and located between the first limiting rod and the second limiting rod; a second rope, one end of the second rope is connected to the second end of the second pulley, and the other end of the second rope bypasses the third fixed pulley and the fourth fixed pulley and is then connected to the second end of the first pulley.

[0015] In some embodiments, optionally, the reciprocating tubing catwalk further includes: a first limiting plate connected to the first limiting rod and the second limiting rod, and the first limiting plate is configured to limit the moving range of the first pulley; a second limiting plate connected to the third limiting rod and the fourth limiting rod, and the second limiting plate is configured to limit the moving range of the second pulley.

[0016] In some embodiments, optionally, the reciprocating tubing catwalk further includes: a lifting assembly disposed at the bottom of the guide rail, and the lifting assembly is configured to lift the guide rail.

[0017] In some embodiments, optionally, the lifting assembly includes: a support base including a mounting hole; a screw rod disposed in the mounting hole; a bushing disposed on the support base, the bushing is in threaded connection with the screw rod, and a supporting portion disposed on the screw rod, and the supporting portion is configured to support the guide rail; wherein, rotating the bushing can drive the screw rod to rise or fall.

[0018] In some embodiments, optionally, the support base further includes: a base; support legs disposed on the base; a base plate disposed on the support legs, and the mounting hole is disposed on the base plate.

[0019] In some embodiments, optionally, the pulley includes: a carriage including a positioning notch; wheels disposed on both sides of the carriage; shock-absorbing members disposed in the carriage; and connecting members disposed at both ends of the carriage.

[0020] The technical solutions provided in this application at least bring the following beneficial effects:

[0021] The reciprocating tubing catwalk provided in this application can be used to transport tubing, and can solve the problems of safety and high labor intensity in transporting tubing during minor repair operations, and is convenient for staff to use. This application is suitable for transporting tubing of different specifications, and the height of the tubing catwalk can be adjusted to be the same as that of the tubing bridge according to the height of the tubing bridge. Taking N = 2 as an example, the two tubing pulleys set at the upper limit of the tubing catwalk are one in front and one behind during tubing transportation, and perform a mechanical reciprocating motion. When ground personnel pull and send the tubing, they do not need to follow the pulley back and forth, and it can be achieved within a small range; in the working state where the height of the tubing bridge is flush, when placing the tubing from the tubing bridge onto the pulley, just pull it, and the tubing will seat into the pulley. When placing the tubing from the pulley onto the tubing bridge, just pry it. Since the pulley is limited in movement within the track, the situation of the pulley tipping over will not occur, which is convenient for ground personnel to operate safely and easily without changing the operation speed. In addition, the double tubing catwalk of this application has a reasonable structure, is simple to operate, and is convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the reciprocating tubing catwalk provided by the embodiment of the present application;

[0025] Figure 2 For Figure 1 Another angle structural schematic diagram of the reciprocating tubing catwalk of the illustrated embodiment;

[0026] Figure 3 For Figure 1 Another angle structural schematic diagram of the reciprocating tubing catwalk of the illustrated embodiment;

[0027] Figure 4 For Figure 1 Another angle structural schematic diagram of the reciprocating tubing catwalk of the illustrated embodiment;

[0028] Figure 5 For Figure 1 Structural schematic diagram of the pulley of the reciprocating tubing catwalk of the illustrated embodiment;

[0029] Figure 6 For Figure 1 Structural schematic diagram of the lifting assembly of the reciprocating tubing catwalk of the illustrated embodiment.

[0030] Among them, Figures 1 to 6 The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0031] 100 reciprocating tubing catwalk, 110 guide rail, 112 first track, 114 second track, 116 first baffle, 118 second baffle, 120 pulley, 122 first pulley, 124 second pulley, 125 carriage, 126 wheel, 127 shock absorber, 128 connecting piece, 129 positioning notch, 130 first limiting rod, 132 second limiting rod, 134 third limiting rod, 136 fourth limiting rod, 140 first fixed pulley, 142 second fixed pulley, 146 first rope, 150 third fixed pulley, 152 fourth fixed pulley, 154 second rope, 160 first limiting plate, 162 second limiting plate, 170 lifting assembly, 172 support seat, 174 screw rod, 176 bushing, 178 supporting portion, 180 mounting hole, 182 base, 184 support leg, 186 base plate, 188 fixed tube. Detailed implementation manners

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0033] The following will refer to Figures 1 to 6 and, through specific embodiments and their application scenarios, describe the reciprocating tubing catwalk 100 provided in the embodiments of this application in detail.

[0034] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, this application provides a reciprocating tubing catwalk 100, including: guide rails 110, the number of guide rails 110 is N, N is an integer greater than 1, and N guide rails 110 are arranged side by side; trolleys 120, provided on the guide rails 110, the number of trolleys 120 is N, and N trolleys 120 and N guide rails 110 are arranged in one-to-one correspondence; among them, N trolleys 120 are connected in series; two trolleys 120 on two adjacent guide rails 110 are arranged in a staggered manner.

[0035] The reciprocating tubing catwalk 100 provided in this application is used to transport tubing. The reciprocating tubing catwalk 100 includes guide rails 110 and trolleys 120. The trolleys 120 are used to transport tubing, and the guide rails 110 serve as the tracks for the trolleys 120 to move. Specifically, the number of guide rails 110 and trolleys 120 is the same, both being N, N is an integer greater than 1, N guide rails 110 are arranged side by side, and one trolley 120 is correspondingly provided on each guide rail 110.

[0036] It should be noted that during oilfield workover operations, transporting tubing mainly means transporting the tubing from the tubing bridge end to the wellhead end, or transporting the tubing taken out of the wellhead back to the tubing bridge end. It can be understood that two trolleys 120 on two adjacent guide rails 110 are arranged in a staggered manner, and the front-back staggering distance between two adjacent trolleys 120 can be adjusted as needed. When one trolley 120 is located at the tubing bridge end, the adjacent trolley 120 is located at the wellhead end. Since the trolleys 120 are connected in series, when the trolley 120 located at the tubing bridge end moves to the wellhead end, it can drive the adjacent trolley 120 to move to the tubing bridge end. When N is equal to 2, 1 tubing can be transported away or back at a time. When N is equal to 4, 2 tubings can be transported away or back at a time. The number of N can be specifically selected according to the actual working needs.

[0037] The reciprocating tubing catwalk 100 provided by the present application arranges N guide rails 110 side by side. A pulley 120 is arranged on each guide rail 110. N guide rails 110 are provided with N pulleys 120. The N pulleys 120 are connected in series, and the pulleys 120 on adjacent two guide rails 110 are arranged in a staggered manner. The staggered pulleys 120 perform a mechanical reciprocating motion. First, the front pulley 120 is used to transport the tubing, and then the rear pulley 120 is used to transport the tubing, overcoming the problem in the related art that when using a single pulley to transport the tubing, the operator needs to follow the pulley back and forth, resulting in a large labor intensity. The N pulleys 120 reciprocate on the track. When the ground personnel pull and send the tubing, there is no need to follow the pulley 120 back and forth, which can be achieved within a small range, reducing the labor intensity of the on-site operators and the risk of lumbar injury to the workers.

[0038] In some embodiments, optionally, as Figure 1 shown, the guide rail 110 includes a first track 112 and a second track 114 arranged side by side. The pulley 120 includes a first pulley 122 and a second pulley 124. The first pulley 122 is arranged on the first track 112, and the first pulley 122 can slide along the first track 112. The second pulley 124 is arranged on the second track 114, and the second pulley 124 can slide along the second track 114. Wherein, the first pulley 122 and the second pulley 124 are connected in series, and the first pulley 122 and the second pulley 124 are arranged in a staggered manner.

[0039] In this embodiment, the guide rail 110 includes a first track 112 and a second track 114 arranged side by side. The pulley 120 includes a first pulley 122 and a second pulley 124, that is, N = 2. Two pulleys 120 are used to reciprocate along the track to transport the tubing. Specifically, the first pulley 122 is arranged on the first track 112, the second pulley 124 is arranged on the second track 114. The first pulley 122 and the second pulley 124 are connected in series, and the first pulley 122 and the second pulley 124 are arranged in a staggered manner to ensure that when one pulley 120 is at the tubing bridge end, the other pulley 120 is at the wellhead end. When running the tubing in, the first pulley 122 can be used to transport the tubing from the tubing bridge end to the wellhead end first. At this time, the second pulley 124 is located at the wellhead end. When the first pulley 122 transports the tubing to the wellhead end, since the first pulley 122 and the second pulley 124 are connected in series, during the process of the first pulley 122 moving towards the wellhead end, it can drive the second pulley 124 to move from the wellhead end to the tubing bridge end. At this time, the workers can use the second pulley 124 to continue transporting the tubing to the wellhead end. The mechanical reciprocating motion of the first pulley 122 and the second pulley 124 enables the ground personnel to pull and send the tubing without following the pulley 120 back and forth, which can be achieved within a small range, reducing the labor intensity of the on-site operators and the risk of lumbar injury to the workers.

[0040] In practical applications, the guide rail 110, as the main body of the motion mechanism, is composed of two C-shaped steel channels about 10 meters in length and one H-shaped steel. The H-shaped steel is in the middle, and the two C-shaped steel channels are on both sides. The openings of the H-shaped steel and the C-shaped steel channels face each other. The H-shaped steel has a specification of 100mm×100mm, and the C-shaped steel channel has a specification of 100mm×50mm. The specifications can be adjusted according to specific usage conditions.

[0041] In some embodiments, optionally, as Figure 1 and Figure 2 shown, the guide rail 110 further includes a first baffle 116 and a second baffle 118 which are oppositely arranged. The reciprocating tubing catwalk 100 further includes: a first limiting rod 130, arranged between the first baffle 116 and the second baffle 118; a second limiting rod 132, arranged between the first baffle 116 and the second baffle 118. The second limiting rod 132 and the first limiting rod 130 are arranged side by side to form a first track 112; a third limiting rod 134, arranged between the first baffle 116 and the second baffle 118; a fourth limiting rod 136, arranged between the first baffle 116 and the second baffle 118. The fourth limiting rod 136 and the third limiting rod 134 are arranged side by side to form a second track 114.

[0042] In this embodiment, the guide rail 110 further includes a first baffle 116 and a second baffle 118 which are oppositely arranged. The first baffle 116 and the second baffle 118 are located at both ends of the guide rail 110. The first track 112 and the second track 114 are arranged side by side between the first baffle 116 and the second baffle 118. The reciprocating tubing catwalk 100 further includes four limiting rods arranged side by side, namely a first limiting rod 130, a second limiting rod 132, a third limiting rod 134, and a fourth limiting rod 136. The first limiting rod 130, the second limiting rod 132, the third limiting rod 134, and the fourth limiting rod 136 are matched with the wheels 126 of the pulley 120 and are all arranged between the first baffle 116 and the second baffle 118. The first limiting rod 130 and the second limiting rod 132 are arranged side by side to form a first track 112, and the third limiting rod 134 and the fourth limiting rod 136 are arranged side by side to form a second track 114.

[0043] In practical applications, the first baffle 116 and the second baffle 118 are oppositely arranged at both ends of the guide rail 110 to play a role in restricting the width. The first baffle 116 and the second baffle 118 are respectively fixed to both ends of the guide rail 110 with fixing bolts. One end can also be fixed by bolts and the other end by welding. The function of bolt fixing is to facilitate the replacement and maintenance of the pulley 120; the limiting plate is a steel plate about 10mm thick, and the four corners are rounded.

[0044] In practical applications, the first limiting rod 130, the second limiting rod 132, the third limiting rod 134, and the fourth limiting rod 136 are arranged on the C-channel steel and H-beam in the guide rail 110. The limiting rods are solid wire rods and are welded to the guide rail 110. The four limiting rods have the same specifications. One limiting rod is welded to each of the openings on both sides of the H-beam, and one limiting rod is welded to each of the openings of the two C-channel steels. The length of the limiting rod is slightly shorter than that of the guide rail 110.

[0045] In some embodiments, optionally, as Figure 1 shown, the reciprocating tubing catwalk 100 further includes: a first fixed pulley 140, arranged on the first baffle 116 and located between the first limiting rod 130 and the second limiting rod 132; a second fixed pulley 142, arranged on the first baffle 116 and located between the third limiting rod 134 and the fourth limiting rod 136; a first rope 146, one end of the first rope 146 is connected to the first end of the first pulley 122, and the other end of the first rope 146 passes around the first fixed pulley 140 and the second fixed pulley 142 and then is connected to the first end of the second pulley 124.

[0046] In this embodiment, the reciprocating tubing catwalk 100 further includes a first fixed pulley 140, a second fixed pulley 142, and a first rope 146. Specifically, the first fixed pulley 140 and the second fixed pulley 142 are arranged at intervals on the first baffle 116. Among them, the first fixed pulley 140 is located between the first limiting rod 130 and the second limiting rod 132, and the second fixed pulley 142 is located between the third limiting rod 134 and the fourth limiting rod 136. One end of the first rope 146 is connected to the first end of the first pulley 122, and the other end of the first rope 146 passes around the first fixed pulley 140 and the second fixed pulley 142 and then is connected to the first end of the second pulley 124, so that the first ends of the first pulley 122 and the second pulley 124 are connected in series. The length of the first rope 146 can be set according to actual needs. Furthermore, when the first pulley 122 moves in one direction, the second pulley 124 can be driven to move in the opposite direction, so as to alternately use the first pulley 122 and the second pulley 124 to transport the tubing to the target position.

[0047] In some embodiments, optionally, as Figure 1 shown, the reciprocating tubing catwalk 100 further includes: a third fixed pulley 150, arranged on the second baffle 118 and located between the third limiting rod 134 and the fourth limiting rod 136; a fourth fixed pulley 152, arranged on the second baffle 118 and located between the first limiting rod 130 and the second limiting rod 132; a second rope 154, one end of the second rope 154 is connected to the second end of the second pulley 124, and the other end of the second rope 154 passes around the third fixed pulley 150 and the fourth fixed pulley 152 and then is connected to the second end of the first pulley 122.

[0048] In this embodiment, the reciprocating tubing catwalk 100 further includes a third fixed pulley 150, a fourth fixed pulley 152, and a second rope 154. Specifically, the third fixed pulley 150 and the fourth fixed pulley 152 are arranged at intervals on the second baffle 118. Among them, the fourth fixed pulley 152 is located between the first limiting rod 130 and the second limiting rod 132, and the third fixed pulley 150 is located between the third limiting rod 134 and the fourth limiting rod 136. One end of the second rope 154 is connected to the second end of the second pulley 124, and the other end of the second rope 154 is connected to the second end of the first pulley 122 after passing around the third fixed pulley 150 and the fourth fixed pulley 152, thereby realizing the series connection of the second ends of the first pulley 122 and the second pulley 124. The length of the second rope 154 can be set according to actual needs, so that when the first pulley 122 moves in one direction, the second pulley 124 can be driven to move in the opposite direction, facilitating the alternate use of the first pulley 122 and the second pulley 124 to transport the tubing to the target position.

[0049] In practical applications, the first fixed pulley 140, the second fixed pulley 142, the third fixed pulley 150, and the fourth fixed pulley 152 are all U-shaped bearings. The four fixed pulleys are respectively fixed on the inner surfaces of the first baffle 116 and the second baffle 118 by welding or bolts for the guiding and movement of the ropes.

[0050] In practical applications, the ropes can be steel wires. There are two steel wires, and each is respectively connected in series with the fixed pulleys arranged on one end baffle of the guide rail 110 and the two pulleys 120, and fixed on the steel wire fixing rings at both ends of the pulley 120 to form a closed loop. The first fixed pulley 140, the second fixed pulley 142, the third fixed pulley 150, and the fourth fixed pulley 152 are provided with anti-off pulley settings for the steel wires.

[0051] In some embodiments, optionally, as Figure 1 and Figure 2 shown, the reciprocating tubing catwalk 100 further includes: a first limiting plate 160, connected to the first limiting rod 130 and the second limiting rod 132, and the first limiting plate 160 is used to limit the movement range of the first pulley 122; a second limiting plate 162, connected to the third limiting rod 134 and the fourth limiting rod 136, and the second limiting plate 162 is used to limit the movement range of the second pulley 124.

[0052] In this embodiment, the reciprocating tubing catwalk 100 further includes a first limit plate 160 and a second limit plate 162. The first limit plate 160 and the second limit plate 162 are mainly provided to enable the pulley 120 to stop when it moves to a suitable position, facilitating the workers to place the tubing on the pulley 120 and to remove the tubing from the pulley 120 when the tubing reaches the target position. Specifically, the first limit plate 160 is disposed on the first track 112. The first limit plate 160 is connected to the first limit rod 130 and the second limit rod 132. The number of the first limit plates 160 is two. The two first limit plates 160 can limit the moving range of the first pulley 122. When the first pulley 122 contacts the first limit plate 160, it will stop moving. The second limit plate 162 is disposed on the second track 114. The second limit plate 162 is connected to the third limit rod 134 and the fourth limit rod 136. The number of the second limit plates 162 is two. The two second limit plates 162 can limit the moving range of the second pulley 124. When the second pulley 124 contacts the second limit plate, it will stop moving.

[0053] In practical applications, the first limit plate 160 and the second limit plate 162 are square tubes, which are used to limit the moving distance of the pulley 120 and can also prevent the pulley 120 from hitting the fixed pulley. The two ends of the first limit plate 160 and the second limit plate 162 are respectively fixed to the guide rail 110 with bolts.

[0054] In some embodiments, optionally, as Figure 1 、 Figure 2 、 Figure 3 and Figure 6 shown, the reciprocating tubing catwalk 100 further includes: a lifting assembly 170, which is disposed at the bottom of the guide rail 110, and the lifting assembly 170 is used to lift and lower the guide rail 110.

[0055] In this embodiment, the reciprocating tubing catwalk 100 further includes a lifting assembly 170. The lifting assembly 170 is disposed at the bottom of the guide rail 110, and the lifting assembly 170 is used to lift and lower the guide rail 110. Since the guide rail 110 is relatively long, the number of the lifting assemblies 170 is multiple. The multiple lifting assemblies 170 are spaced apart and disposed at the bottom of the guide rail 110, and the multiple lifting assemblies 170 jointly control the ascending and descending of the guide rail 110.

[0056] In some embodiments, optionally, as Figure 6 shown, the lifting assembly 170 includes: a support base 172, and the support base 172 includes a mounting hole 180; a screw rod 174, which is disposed in the mounting hole 180; a bushing 176, which is disposed on the support base 172, and the bushing 176 is in threaded connection and cooperation with the screw rod 174; a supporting portion 178, which is disposed on the screw rod 174, and the supporting portion 178 is used to support the guide rail 110; wherein, rotating the bushing 176 can drive the screw rod 174 to ascend or descend.

[0057] In this embodiment, the lifting assembly 170 includes a support base 172, a screw 174, a bushing 176, and a supporting portion 178. Specifically, the support base 172 is located at the bottom of the lifting assembly 170. An installation hole 180 is provided at the top of the support base 172, and a bushing 176 is provided at the upper part of the support base 172. The screw 174 sequentially passes through the bushing 176 and the installation hole 180. Specifically, the screw 174 is in threaded connection and cooperation with the bushing 176. Rotating the bushing 176 can cause the screw 174 to rise or fall. A supporting portion 178 is provided above the screw 174, and the supporting portion 178 is used to support the guide rail 110. By rotating the bushing 176 that is in threaded connection with the screw 174, the screw 174 can be raised or lowered, so as to drive the supporting portion 178 above the screw 174 and the guide rail 110 supported by the supporting portion 178 to rise or fall.

[0058] In actual application, a fixing pipe 188 is further provided below the guide rail 110, and the fixing pipe 188 is welded to the guide rail 110. The fixing pipe 188 is a pipe with a diameter of about φ60.3 mm, and there are five in total. The five fixing pipes 188 are evenly distributed and welded below the guide rail 110, which are used to fix the width of the guide rail 110 and increase the strength, and are also used for placing the lifting assembly 170. The lifting assembly 170 is specifically located below the fixing pipe 188.

[0059] In some embodiments, optionally, as Figure 6 shown, the support base 172 further includes: a base 182; support legs 184 provided on the base 182; a base plate 186 provided on the support legs 184, and the installation hole 180 is provided on the base plate 186.

[0060] In this embodiment, the support base 172 further includes a base 182, support legs 184, and a base plate 186. Specifically, the base 182 is provided at the bottommost of the support base 172. To improve the stability of the structure, the horizontal area of the base 182 is relatively large. Support legs 184 are provided above the base 182. The number of support legs 184 is multiple, and the multiple support legs 184 are arranged in a rectangle. A base plate 186 is provided above the support legs 184, and an installation hole 180 is provided on the base plate 186. The screw 174 sequentially passes through the bushing 176 and the installation hole 180.

[0061] In actual application, the bushing 176 is a rotating bushing 176. A flat thrust ball bearing is provided inside the bushing 176, and an adjustment hole is provided on the bushing 176. The adjustment hole is used to install an adjustment rod to rotate the bushing 176 through the adjustment rod, and the screw 174 is lifted or lowered by rotating the bushing 176, so as to drive the supporting portion 178 above the screw 174 and the guide rail 110 supported by the supporting portion 178 to rise or fall.

[0062] In practical applications, the lifting assembly 170 includes a base 182, support legs 184, a substrate 186, a rotary bushing 176, a flat thrust ball bearing, a fixing nut, adjustment holes, adjustment rods, a screw 174, support pads, and tie rods. The fixing nut is arranged below the substrate 186 and is in threaded engagement with the screw 174. After adjusting the guide rail 110 to a suitable height, the fixing nut can be tightened to lock the lifting assembly 170. The supporting portion 178 can be a support pad, and the tie rods are arranged between the support pad and the screw 174, and the tie rods can play a role in protection and buffering.

[0063] In some embodiments, optionally, as Figure 5 shown, the trolley 120 includes: a carriage 125, the carriage 125 including a positioning notch 129; wheels 126 arranged on both sides of the carriage 125; shock absorbers 127 arranged inside the carriage 125; and connectors 128 arranged at both ends of the carriage 125.

[0064] In this embodiment, the trolley 120 includes a carriage 125, wheels 126, shock absorbers 127, and connectors 128. Specifically, a positioning notch 129 is provided on the carriage 125, and the positioning notch 129 is used for positioning the oil pipe. The oil pipe can be placed on the positioning notch 129, and the positioning notch 129 can prevent the oil pipe from moving out of the carriage 125 when transporting the oil pipe. The number of wheels 126 is four, with two wheels 126 at the front and two at the back, and the four wheels 126 are respectively arranged on both sides of the carriage 125. The wheels 126 can drive the carriage 125 and the oil pipe carried on the carriage 125 to move along the track. A shock absorber 127 is also arranged inside the carriage 125, and the shock absorber 127 can be used to protect the male thread of the oil pipe. Connectors 128 are arranged at both ends of the carriage 125, and the connectors 128 are used to connect ropes to string adjacent trolleys 120 through the ropes.

[0065] In actual applications, the shock absorber 127 can be a rubber block, the positioning notch 129 can be an arc weir, and the connecting member 128 is a wire rope fixing ring. The pulley 120 includes a carriage 125, an axle, wheels 126, a wire rope fixing ring, a rubber block, and an arc weir. The carriage 125 is composed of C-channel steel and steel plates with a specification of 100 mm × 50 mm. One side of the carriage 125 is an arc weir, and the arc of the arc weir matches the oil pipe; two axles are welded above the exposed bottom plate of the carriage 125, and two wheels 126 are respectively provided on each axle. The wheels 126 are U-shaped bearings; the rubber block is arranged inside the carriage 125 to protect the male thread of the oil pipe; the wire rope fixing rings are welded at both ends of the exposed bottom plate of the carriage 125 to connect the wire ropes in series. There are two pulleys 120, which are arranged in the guide rail 110, and the wheels 126 on the pulley 120 ride on the limit rod. The directions of the arc weirs on the first pulley 122 and the second pulley 124 are the same; the pulley 120 is limited to move in the guide rail 110, and the upper plane of the pulley 120 is at the same height as the upper plane of the guide rail 110, or slightly lower than the upper plane of the guide rail 110.

[0066] In oilfield workover operations, the process requires that the oil pipe must not touch the ground and must be placed on a horizontal oil pipe bridge. The oil pipes used in workovers are generally about 9.6 meters long per root. To meet the needs of oil and gas production, several hundred working oil pipes usually need to be prepared on site. To facilitate the lowering of the oil pipe into the well or lifting it out of the well and placing it on the oil pipe bridge, an oil pipe catwalk needs to be built on the oil pipe bridge.

[0067] In the prior art during the operation process, the oil pipe catwalk is composed of two pipe fittings cut and welded into pipe clamps, two oil pipes, and an oil pipe pulley 120. When building the oil pipe catwalk, first place the two pipe clamps on the front and rear two horizontally placed oil pipes on the built oil pipe bridge, lift the two oil pipes and place them on the pipe clamps, and then place the oil pipe pulley 120 on the two oil pipes, and the oil pipe catwalk is completed. The built oil pipe catwalk is above the oil pipe bridge and is about 10 cm higher than the oil pipe bridge. The completed oil pipe catwalk faces the wellhead and has a longitudinal relationship with the wellhead, and the oil pipe catwalk and the oil pipe bridge are in a vertical relationship.

[0068] Using the reciprocating oil pipe catwalk 100 in the above embodiment, the workover process can be divided into the following steps:

[0069] First, build the oil pipe bridge at the workover construction site. Secondly, place the three support seats 172 at the position on one side of the oil pipe bridge longitudinally facing the wellhead, place the compound oil pipe catwalk on the support seats 172, and the fixed pipe 188 on the compound oil pipe catwalk sits on the support tiles on the support seats 172; use the adjusting rod to adjust the height of the support seats 172, so as to adjust the height of the compound oil pipe catwalk to be the same as that of the oil pipe bridge, and the compound oil pipe catwalk is completed.

[0070] Subsequently, when lowering the tubing, the wellhead staff first lift one end of the tubing (female thread end) at the wellhead and place it on the tubing pillow placed between the compound tubing catwalk and the wellhead. The ground staff pull the pulley to a position flush with the end of the tubing (male thread end), insert the movable jaw of the pipe wrench into the male thread of the tubing to pull the tubing onto the tubing pulley, then use the pipe wrench to grip the tubing body and push the tubing to a position convenient for the wellhead staff to operate. The wellhead staff buckle the tubing sling on the tubing, hang the sling ring, insert the sling pin, lift the tubing, and one pulley moves with the tubing to the wellhead position, while the other pulley moves to a position near the male thread of the tubing under the traction of the wire rope. The ground staff only need to repeat the above actions within a small range to continue the operation of pulling and feeding the tubing. When pulling the tubing out of the well, the ground staff first pull one pulley on the compound tubing catwalk to the end of the tubing (the rear end of the tubing catwalk), and the other pulley will move to the wellhead. The wellhead staff place the male thread end of the single tubing pulled out of the well on the tubing pulley. Under the action of the gravity of the lowered tubing, the pulley and the tubing move together to the end of the tubing catwalk. When the female thread end of the tubing is about three meters away from the wellhead, the ground staff use the pipe wrench to grip the tubing body and pull the handle of the pipe wrench backward to drive the tubing and the pulley to move to the end of the tubing catwalk. After the tubing is placed on the tubing pillow, the wellhead staff remove the tubing sling, and the ground staff pull the handle of the pipe wrench backward to drive the tubing to move to the end of the tubing catwalk to a suitable position, and use the pipe wrench to pry the tubing from the tubing pulley to the tubing bridge. The ground staff only need to repeat the above actions within a small range to continue the operation of pulling and feeding the tubing.

[0071] Finally, after the work of repairing oil and gas wells is completed, the compound tubing catwalk is transported to the next well repair site with the well repair equipment and continues to be used according to the above steps.

[0072] The above description is only for the convenience of those skilled in the art to understand the technical solution of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0073] Although this specification contains many specific implementation details, these should not be construed as limiting the scope of any invention or the scope of what is claimed, but rather are mainly used to describe the features of specific embodiments of a particular invention. Certain features described in multiple embodiments in this specification can also be combined and implemented in a single embodiment. On the other hand, the various features described in a single embodiment can also be separately implemented in multiple embodiments or implemented in any suitable sub-combination. In addition, although features may function in certain combinations as described above and are even initially claimed as such, one or more features from the claimed combination can in some cases be removed from the combination, and the claimed combination can be directed to a sub-combination or a variant of a sub-combination.

[0074] Similarly, although the operations are depicted in the drawings in a particular order, this should not be construed as requiring that the operations be performed in the particular order shown or sequentially, or that all illustrated operations be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Additionally, the separation of various system modules and components in the above-described embodiments should not be understood to be required in all embodiments, and it should be understood that the program components and systems described can generally be integrated together in a single software product or packaged into multiple software products.

[0075] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the acts recited in the claims can be performed in a different order and still achieve the desired result. Additionally, the processes depicted in the figures are not necessarily in the particular order or sequential order shown to achieve the desired result. In some implementations, multitasking and parallel processing may be advantageous.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0077] The above are only specific embodiments of the present application, which enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A reciprocating tubing catwalk (100), characterized in that, the reciprocating tubing catwalk (100) includes: Guide rails (110), the number of the guide rails (110) is N, N is an integer greater than 1, and the N guide rails (110) are arranged side by side; Trolleys (120), provided on the guide rails (110), the number of the trolleys (120) is N, and the N trolleys (120) and the N guide rails (110) are arranged in one-to-one correspondence; Wherein, the N trolleys (120) are connected in series; The two trolleys (120) on two adjacent guide rails (110) are arranged in a staggered manner.

2. The reciprocating tubing catwalk (100) according to claim 1, characterized in that, the guide rail (110) includes a first track (112) and a second track (114) arranged side by side, and the trolley (120) includes a first trolley (122) and a second trolley (124); The first trolley (122) is arranged on the first track (112), and the first trolley (122) can slide along the first track (112); The second trolley (124) is arranged on the second track (114), and the second trolley (124) can slide along the second track (114); Wherein, the first trolley (122) is connected in series with the second trolley (124), and the first trolley (122) and the second trolley (124) are arranged in a staggered manner.

3. The reciprocating tubing catwalk (100) according to claim 2, characterized in that, the guide rail (110) further includes a first baffle (116) and a second baffle (118) arranged oppositely, and the reciprocating tubing catwalk (100) further includes: A first limiting rod (130), arranged between the first baffle (116) and the second baffle (118); A second limiting rod (132), arranged between the first baffle (116) and the second baffle (118), and the second limiting rod (132) and the first limiting rod (130) are arranged side by side to form the first track (112); A third limiting rod (134), arranged between the first baffle (116) and the second baffle (118); A fourth limiting rod (136), arranged between the first baffle (116) and the second baffle (118), and the fourth limiting rod (136) and the third limiting rod (134) are arranged side by side to form the second track (114).

4. The reciprocating tubing catwalk (100) according to claim 3, characterized in that, it further includes: A first fixed pulley (140), arranged on the first baffle (116), between the first limiting rod (130) and the second limiting rod (132); A second fixed pulley (142), arranged on the first baffle (116), between the third limiting rod (134) and the fourth limiting rod (136); The first rope (146), one end of the first rope (146) is connected to the first end of the first pulley block (122), and the other end of the first rope (146) is wound around the first fixed pulley (140) and the second fixed pulley (142) and then connected to the first end of the second pulley block (124).

5. The reciprocating tubing catwalk (100) according to claim 3, wherein, further comprising: A third fixed pulley (150), disposed on the second baffle (118), between the third limiting rod (134) and the fourth limiting rod (136); A fourth fixed pulley (152), disposed on the second baffle (118), between the first limiting rod (130) and the second limiting rod (132); A second rope (154), one end of the second rope (154) is connected to the second end of the second pulley block (124), and the other end of the second rope (154) is wound around the third fixed pulley (150) and the fourth fixed pulley (152) and then connected to the second end of the first pulley block (122).

6. The reciprocating tubing catwalk (100) according to claim 3, wherein, further comprising: A first limiting plate (160), connected to the first limiting rod (130) and the second limiting rod (132), and the first limiting plate (160) is used to limit the moving range of the first pulley block (122); A second limiting plate (162), connected to the third limiting rod (134) and the fourth limiting rod (136), and the second limiting plate (162) is used to limit the moving range of the second pulley block (124).

7. The reciprocating tubing catwalk (100) according to any one of claims 1 to 6, wherein, further comprising: A lifting assembly (170), disposed at the bottom of the guide rail (110), and the lifting assembly (170) is used to lift the guide rail (110).

8. The reciprocating tubing catwalk (100) according to claim 7, wherein, the lifting assembly (170) includes: A support seat (172), the support seat (172) includes a mounting hole (180); A screw rod (174), disposed in the mounting hole (180); A bushing (176), disposed on the support seat (172), and the bushing (176) is in threaded connection with the screw rod (174); A supporting portion (178), disposed on the screw rod (174), and the supporting portion (178) is used to support the guide rail (110); wherein, rotating the bushing (176) can drive the screw rod (174) to rise or fall.

9. The reciprocating tubing catwalk (100) according to claim 8, wherein, the support seat (172) further includes: A base (182); Support legs (184), disposed on the base (182); A base plate (186), disposed on the support legs (184), and the mounting hole (180) is disposed on the base plate (186).

10. The reciprocating tubing catwalk (100) according to any one of claims 1 to 6, characterized in that, the pulley (120) comprises: a carriage (125), the carriage (125) comprising a positioning notch (129); wheels (126) provided on both sides of the carriage (125); a shock absorber (127) provided inside the carriage (125); connecting members (128) provided at both ends of the carriage (125).

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