CN115667670A - Movable fracturing sledge, fracturing well site and maintenance method of fracturing sledge - Google Patents

Abstract

The application discloses a movable fracturing sledge, a fracturing well site and a maintenance method of the fracturing sledge, and relates to the field of oil-gas equipment. A mobile fracturing skid comprising: the fracturing skid comprises a fracturing skid body and a plurality of traveling devices, wherein the traveling devices are distributed at the bottom of the fracturing skid body; every running gear includes mounting bracket and running gear, and the mounting bracket is connected in the bottom of fracturing sledge body, and running gear sets up in the mounting bracket, and running gear is used for driving fracturing sledge body and removes. A fracturing well site comprising a plurality of fracturing stations, each fracturing station being provided with a fracturing sled, the fracturing sleds comprising a mobile fracturing sledge or a fixed fracturing sledge. A maintenance method of a fracturing sledge is applied to the fracturing well site. The fracturing sledge can be inconvenient to transfer due to the fact that the fracturing sledge is moved in the current mode, and the problems of labor force and the like are increased.

Description

Movable fracturing sledge, fracturing well site and maintenance method of fracturing sledge

Technical Field

The application belongs to the technical field of oil and gas equipment, and particularly relates to a mobile fracturing sledge, a fracturing well site and a maintenance method of the fracturing sledge.

Background

In a fracturing well site, when a fracturing sledge breaks down or needs to be maintained and maintained, the fracturing sledge needs to be moved to a maintenance and maintenance station for corresponding operation. At present, the fracturing sledge is dragged manually, and the fracturing sledge is transferred to a corresponding station. However, the above-mentioned method of moving the fracturing sledge requires a lot of manpower, which causes the problems of inconvenient transportation of the fracturing sledge, increased labor intensity, and the like.

Disclosure of Invention

The embodiment of the application aims to provide a movable fracturing sledge, a fracturing well site and a maintenance method of the fracturing sledge, and the problems that the fracturing sledge is inconvenient to move and labor force is increased due to the current mode can be solved.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a portable fracturing sled, this portable fracturing sled includes: the fracturing device comprises a fracturing sledge body and a plurality of traveling devices distributed at the bottom of the fracturing sledge body;

every running gear includes mounting bracket and running gear, the mounting bracket connect in the bottom of fracturing sledge body, running gear set up in the mounting bracket, running gear is used for driving the fracturing sledge body removes.

The embodiment of the application also provides a fracturing well site, which comprises a plurality of fracturing stations, wherein each fracturing station is provided with a fracturing sledge;

the fracturing sleds comprise the movable fracturing sleds, or the fracturing sleds comprise fixed fracturing sleds.

The embodiment of the application also provides a maintenance method of the fracturing skid, which is applied to the fracturing well site, and the maintenance method of the fracturing skid comprises the following steps:

determining a fracturing skid in the fracturing well site needing maintenance;

cutting off a manifold and a cable which are connected with a fracturing sledge needing to be maintained;

moving the fracturing sleds needing maintenance out of the corresponding fracturing stations, and transferring the fracturing sleds to the maintenance stations for maintenance operation;

moving the maintained fracturing sledge into a corresponding fracturing station;

connecting the manifold and the cable with the maintained fracturing sledge;

and starting the fracturing sledge after maintenance to perform fracturing operation.

In this application embodiment, can drive fracturing sledge body through running gear and freely remove to make the fracturing sledge can remove according to the actual demand. Compare in the mode that adopts the manual work to pull the fracturing sledge, portable fracturing sledge in this application embodiment need not to increase the manpower, but directly drives the fracturing sledge body through a plurality of running gear and remove to predetermineeing the position when needs remove to improve the convenience that the fracturing sledge body removed greatly, meanwhile, can not additionally increase personnel's labour, and reduced intensity of labour.

Drawings

Fig. 1 is a schematic view of a first structure of a mobile fracturing sled according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a second structure of the mobile fracturing skid disclosed in the embodiments of the present application;

fig. 3 is a first structural schematic view of the support frame and the walking device disclosed in the embodiment of the present application;

fig. 4 is a second structural schematic diagram of the support frame and the walking device disclosed in the embodiment of the present application;

fig. 5 is a schematic diagram of a mobile fracturing sled according to an embodiment of the present disclosure in a mobile state;

fig. 6 is a schematic view of a mobile fracturing sled according to an embodiment of the present disclosure in a non-mobile state.

Description of reference numerals:

100-fracturing the sled body; 110-a support frame; 111-a first support profile; 112-a second support profile; 113-a stationary support plate; 114-a fixed seat; 120-bottom sledge; 130-fracturing pump;

200-a walking device; 210-a mounting frame; 211-a first side panel; 212-a second side panel; 213-a first connection plate; 214-a second connecting plate; 215-a fixed frame; 220-a lifting driving mechanism; 221-air bag; 222-a long hole; 230-a traveling mechanism; 231-a roller; 232-a travel drive; 233-speed reducer; 234-coupling; 240-articulated shaft.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 to 6, the present application discloses a mobile fracturing sled, which is applied to a fracturing well site, and the mobile fracturing sled can move in the fracturing well site, so as to facilitate maintenance and maintenance.

The disclosed mobile fracturing sledge comprises a fracturing sledge body 100 and a plurality of traveling devices 200, wherein the traveling devices 200 are distributed at the bottom of the fracturing sledge body 100, the fracturing sledge body 100 can be supported by the traveling devices 200, and meanwhile, the fracturing sledge body 100 can be driven to move after the traveling devices 200 are started, so that the fracturing sledge body 100 can be moved to a preset position, for example, the fracturing sledge body 100 with faults or needing maintenance is moved to a maintenance and maintenance station, or the fracturing sledge body 100 after maintenance or maintenance is moved to an operation station (namely, the fracturing station described below) of a fracturing well site, and therefore the fracturing sledge body 100 can be freely moved. Optionally, the fracturing sled body 100 may include a bottom sled 120 and a fracturing pump 130 disposed on the bottom sled 120, and it should be noted that the structure of the fracturing sled body 100 and its working principle can be referred to related art, and will not be described in detail herein.

Based on above-mentioned setting, in this application embodiment, can drive fracturing sledge body through running gear and freely remove to make the fracturing sledge can remove according to the actual demand. Compare in the mode that adopts the manual work to pull the fracturing sledge, portable fracturing sledge in this application embodiment need not to increase the manpower, but directly drives the fracturing sledge body through a plurality of running gear and remove to predetermineeing the position when needs remove to improve the convenience that the fracturing sledge body removed greatly, meanwhile, can not additionally increase personnel's labour, and reduced intensity of labour.

In order to switch the state of the fracturing skid body 100 between the moving state and the working state (i.e., the non-moving state), in the embodiment of the present application, each traveling device 200 may further include a lifting driving mechanism 220. Wherein, mounting bracket 210 swing joint is in fracturing sledge body 100, and lift actuating mechanism 220 sets up in fracturing sledge body 100, and the drive end and the mounting bracket 210 of lift actuating mechanism 220 are connected, and running gear 230 sets up in mounting bracket 210. Based on this, under the driving action of the lifting driving mechanism 220, the mounting frame 210 can move relative to the fracturing sled body 100 and synchronously drive the traveling mechanism 230 to move, so as to lift the traveling mechanism 230, so that the traveling mechanism 230 can contact with or separate from a supporting surface, wherein the supporting surface may be the ground, or any other surface for placing or traveling the fracturing sled body 100.

Based on the above arrangement, when the mobile fracturing sled is in a moving state, the plurality of traveling devices 200 can all be in contact with the supporting surface, so that the fracturing sled body 100 is separated from the supporting surface, specifically, the plurality of traveling devices 200 descend and are in contact with the supporting surface, and as the plurality of traveling devices 200 continuously descend, the fracturing sled body 100 is jacked up under the action of a counterforce, so that the fracturing sled body 100 is separated from the supporting surface; then, the plurality of traveling devices 200 are started, and the fracturing skid body 100 can be carried by the plurality of traveling devices 200 to move freely, so that the fracturing skid body 100 can be moved to a preset position.

In the case that the mobile fracturing skid is in a non-moving state (i.e., an operating state), the plurality of traveling devices 200 may be separated from the support surface, specifically, when the fracturing skid body 100 does not need to be transferred, the plurality of traveling devices 200 are all in a retraction state, at this time, the plurality of traveling devices 200 are separated from the support surface, and when there is no supporting action of the plurality of traveling devices 200, the fracturing skid body 100 falls to the support surface, and in this case, the fracturing skid body 100 may not move, so that stability of the fracturing skid body 100 during operation may be ensured.

In this application embodiment, under the driving action of lift actuating mechanism 220, can drive running gear 230 through mounting bracket 210 and rise and break away from the supporting surface, and place fracturing sledge body 100 in the supporting surface, perhaps descend and follow the supporting surface jack-up with fracturing sledge body 100, thereby can realize fracturing sledge body 100 and the switching between mobile state and non-mobile state, both can guarantee the convenience of transferring to fracturing sledge body 100 under the mobile state, can guarantee fracturing sledge body 100 steady operation under the non-mobile state again.

Compare in the mode that adopts equipment such as fork truck, crane to drag fracturing sledge, portable fracturing sledge in this application embodiment need not additionally to use other equipment to drag fracturing sledge body 100, but directly holds up fracturing sledge body 100 and drives fracturing sledge body 100 and remove to predetermineeing the position through a plurality of running gear 200 when needs remove to improve the convenience that fracturing sledge body 100 removed greatly, meanwhile, can not additionally increase personnel's labour.

Referring to fig. 3, 5 and 6, in some embodiments, the mounting frame 210 may swing with respect to the fracturing skid body 100 to achieve partial lifting of the mounting frame 210 through a swing mode, so as to drive the traveling mechanism 230 to lift.

For example, the mounting bracket 210 has a first end and a second end opposite to each other, wherein the first end of the mounting bracket 210 is rotatably connected to the fracturing sled body 100, so that the mounting bracket 210 can swing relative to the fracturing sled body 100; the driving end of the lifting driving mechanism 220 is movably connected with the second end of the mounting frame 210, so that the mounting frame 210 is driven to swing through the lifting driving mechanism 220; the traveling mechanism 230 is disposed between the first end and the second end of the mounting frame 210.

Optionally, the bottom of the fracturing sled body 100 may be provided with a fixing base 114, the fixing base 114 is provided with a through hole, accordingly, the first end of the mounting frame 210 may be provided with a connecting lug with a through hole, and a pin shaft is inserted into the through hole of the connecting lug and the through hole of the fixing base 114, so as to facilitate the mounting frame 210 to swing relative to the fracturing sled body 100.

Based on the above arrangement, under the driving action of the lifting driving mechanism 220, the second end of the mounting frame 210 can be lifted along with the driving end of the lifting driving mechanism 220, so that the whole mounting frame 210 swings relative to the fracturing sled body 100, meanwhile, the traveling mechanism 230 swings along with the mounting frame 210, and in the swinging process, the traveling mechanism 230 can be lifted to be separated from the supporting surface or lowered to be in contact with the supporting surface, so that the movable fracturing sled can be switched between a traveling state and a non-traveling state.

Of course, the first end of the mounting frame 210 may also be rotatably connected to the fracturing sled body 100, the driving end of the lifting driving mechanism 220 is movably connected to the middle region of the mounting frame 210, and the traveling mechanism 230 is disposed at the second end of the mounting frame 210, so that the lifting of the traveling mechanism 230 may also be implemented, so as to implement switching between a traveling state and a non-traveling state of the mobile fracturing sled.

Considering that the mounting bracket 210 swings with respect to the fracturing sled body 100 and the driving end of the lifting driving mechanism 220 moves in the lifting direction (i.e., vertical direction), the respective movements of the mounting bracket 210 and the driving end may interfere with each other, so that the traveling mechanism 230 cannot lift.

To prevent the occurrence of motion interference, referring mainly to fig. 5, in some embodiments, one of the driving end of the elevating driving mechanism 220 and the second end of the mounting bracket 210 is provided with a long hole 222, and the other is provided with a hinge shaft 240, wherein the hinge shaft 240 is rotatably and movably disposed in the long hole 222. Based on this, in the process of lifting the driving end of the lifting driving mechanism 220, the hinge shaft 240 can rotate in the long hole 222 and perform position adjustment in the long hole 222, so that the generation of motion interference between the mounting frame 210 and the driving end of the lifting driving mechanism 220 can be effectively avoided, and the normal lifting of the traveling mechanism 230 is ensured.

In a more specific embodiment, the slot 222 can be disposed at the driving end of the lifting driving mechanism 220, and the hinge shaft 240 can be disposed at the second end of the mounting bracket 210, so as to lift the traveling mechanism 230.

In other embodiments, the mounting frame 210 is slidably connected to the fracturing skid body 100 and can be lifted relative to the fracturing skid body 100, so that the overall lifting of the mounting frame 210 can be realized through a lifting mode to drive the traveling mechanism 230 to lift.

Optionally, a slideway extending in the lifting direction may be disposed at the bottom of the fracturing skid body 100, and a sliding structure is disposed at a part of the mounting frame 210, and is slidably disposed in the slideway. Thus, under the driving action of the lifting driving mechanism 220, the mounting frame 210 can be lifted integrally and synchronously drive the traveling mechanism 230 to lift, so that the mobile fracturing sledge can be switched between a traveling state and a non-traveling state.

Referring to fig. 5 and 6, in some embodiments, the lifting driving mechanism 220 may include an inflatable and deflatable air bag 221, one end of the air bag 221 is fixed to the fracturing sled body 100, and the other end of the air bag 221 is connected to the mounting bracket 210, and the air bag 221 expands in volume when being inflated, so that a squeezing action can be generated on the mounting bracket 210 to push the traveling mechanism 230 through the mounting bracket 210, so that the traveling mechanism 230 squeezes the supporting surface, and the fracturing sled body 100 is jacked up under the action of a counterforce; when the air bag 221 is deflated, the air bag 221 is deflated by using an air pump, so that the traveling mechanism 230 can be lifted, and at this time, the fracturing sled body 100 is lowered under the action of gravity, so that the fracturing sled body 100 falls to the supporting surface.

Alternatively, the airbag 221 may be a columnar airbag, and an axis of the columnar airbag is parallel to the ascending and descending direction, of course, other shapes are also possible, and the shape of the airbag 221 is not particularly limited in this embodiment.

In the embodiment of the present application, the traveling device 200 may include at least one of a crawler type traveling mechanism, a roller type traveling mechanism, a crawl type traveling mechanism, a roller type traveling mechanism, and a sliding shoe type traveling mechanism. The traveling mechanism 230 may be configured to move the fracturing sled body 100 freely. It should be noted that specific structures of the crawler type traveling mechanism, the crawling type traveling mechanism, the roller type traveling mechanism and the sliding shoe type traveling mechanism may be referred to the related art, and will not be described in detail herein.

In addition, the walking device 200 may be driven by an electric, hydraulic, or pneumatic motor to provide a stable driving force for walking.

The specific structure of the roller-type traveling mechanism will be described in detail below.

Referring to fig. 3 and 4, in some embodiments, the traveling mechanism 230 may include a rotatable roller 231, and a rotation shaft of the roller 231 is connected to the mounting frame 210. Specifically, the mounting bracket 210 may include a first side plate 211, a second side plate 212, a first connecting plate 213 and a second connecting plate 214, wherein the first side plate 211 and the second side plate 212 are spaced apart along a first direction, the first connecting plate 213 and the second connecting plate 214 are each connected between the first side plate 211 and the second side plate 212, respectively, and are spaced apart along a second direction, the first connecting plate 213 is located at a first end of the mounting bracket 210, and the second connecting plate 214 is located at a second end of the mounting bracket 210. Wherein the first direction and the second direction are perpendicular to each other. Here, the first direction may be parallel to the moving direction of the fracturing sled body 100, the second direction may be a left-right direction of the moving direction of the fracturing sled body 100, and the lifting direction may be an up-down direction of the fracturing sled body 100, such that the first direction, the second direction, and the lifting direction are perpendicular to each other. Further, the rotating shaft of the roller 231 is connected to the first side plate 211 and the second side plate 212, respectively, and the roller 231 is located between the first connecting plate 213 and the second connecting plate 214.

Based on the above arrangement, the rollers 231 are enclosed inside by the first side plate 211, the second side plate 212, the first connecting plate 213 and the second connecting plate 214, so that the rollers 231 can be protected, the interference of the external environment on the rotation of the rollers 231 can be prevented, and the normal rotation of the rollers 231 can be ensured; in addition, the roller 231 may increase the contact area between the traveling mechanism 230 and the supporting surface to a certain extent, so as to improve the stability of the movement of the fracturing sled body 100.

Optionally, as shown in fig. 4, the traveling mechanism 230 may further include a traveling driving element 232, a speed reducer 233 and a coupling 234, wherein an output end of the traveling driving element 232 is connected to an input end of the speed reducer 233, an output end of the speed reducer 233 is connected to the coupling 234, and the coupling 234 is connected to a rotating shaft of the roller 231. Alternatively, the travel drive 232 may be a motor. Based on the above arrangement, the walking driving force is output by the walking driving member 232, the walking capability of the walking mechanism 230 can be improved through the speed reduction and torque increasing effects of the speed reducer 233, and the output end of the speed reducer 233 is in transmission connection with the rotating shaft of the roller wheel 231 through the coupler 234, so as to transmit power. In this way, the running driving member 232 sequentially passes through the speed reducer 233 and the coupling 234 to drive the roller 231 to rotate, so that the fracturing sled body 100 can run.

With continued reference to fig. 4, in order to fix the running gear 230, the mounting bracket 210 may further include a fixing frame 215, the fixing frame 215 is fixed to the first side plate 211, the speed reducer 233 is fixed to the fixing frame 215, and the coupling 234 rotatably penetrates through the fixing frame 215. Based on this, the speed reducer 233 may be fixed to the mounting bracket 210 by the fixing frame 215, so that not only power transmission may be achieved, but also normal lifting of the traveling mechanism 230 may be ensured.

In order to adjust the direction of the mobile fracturing skid, in some embodiments, the mobile fracturing skid may further include a plurality of steering devices (not shown), the steering devices are connected with the traveling devices 200 in a one-to-one correspondence, and the steering devices are all connected to the bottom of the fracturing skid body 100. Based on this, the steering device can rotate the traveling device 200 relative to the fracturing skid body 100, so as to change the orientation of the traveling device 200, and under the action of the steering devices, the traveling devices 200 can synchronously rotate, and the respective rotation parameters are the same, so that the fracturing skid body 100 can travel according to a preset track, and the fracturing skid body 100 can be transferred to a preset position.

It should be noted that the specific structure of the steering device and the steering principle thereof can be referred to the related art, and will not be described in detail herein.

Considering that the fracturing skid body 100 is easy to freely turn when the steering device is arranged, the fracturing skid body 100 is caused to freely move. Based on this, the fracturing sledge can also include a plurality of first locking devices (not shown in the figure) when moving, and a plurality of first locking devices are connected with a plurality of turning devices one-to-one, and first locking device is used for locking or unblock corresponding turning device. When the first locking devices are in a locking state, the steering devices cannot rotate continuously, and at the moment, the traveling devices 200 respectively connected with the steering devices cannot rotate, so that steering cannot be realized; when the first locking devices are unlocked, the steering devices can rotate, and at this time, the traveling devices 200 connected to the steering devices can rotate, so as to steer the fracturing sled body 100.

It should be noted that the specific structure of the first locking device and its working principle can be referred to the prior art, and will not be described in detail herein.

Consider that the frac sled body 100 needs to be stationary during the fracturing operation. Based on this, the fracturing sled can further include a plurality of second locking devices when moving, the plurality of second locking devices are connected with the plurality of traveling mechanisms 230 in a one-to-one correspondence, and the second locking devices are used for locking or unlocking the corresponding traveling mechanisms 230. When the second locking devices are locked, the traveling mechanisms 230 are locked and cannot move, so that the fracturing skid body 100 cannot move, and the stability of the fracturing skid body 100 in the fracturing operation process can be ensured; when the second locking devices are all in the unlocked state, the traveling mechanisms 230 can move, and at this time, the fracturing sled body 100 can move through the traveling mechanisms 230, so that maintenance is facilitated.

It should be noted that the specific structure of the second locking device and the working principle thereof can be referred to the prior art, and will not be described in detail herein.

Referring to fig. 5 and 6, in order to install a plurality of traveling devices 200, in the embodiment of the present invention, a plurality of supporting frames 110 may be disposed at the bottom of the fracturing skid body 100, and the plurality of supporting frames 110 are connected to the plurality of traveling devices 200 in a one-to-one correspondence manner, so that each traveling device 200 is installed through each supporting frame 110.

In some embodiments, each support bracket 110 may include a first support profile 111, a second support profile 112, and a fixed support plate 113, wherein the first support profile 111 is spaced apart from the second support profile 112, and the fixed support plate 113 is connected between the first support profile 111 and the second support profile 112; the mounting bracket 210 is movably connected to at least one of the first support section 111 and the second support section 112, and the elevating driving mechanism 220 is fixed to the fixed support plate 113.

Alternatively, both the first support section bar 111 and the second support section bar 112 may be i-shaped steel or the like.

When the mounting bracket 210 swings relative to the fracturing skid body 100, the mounting bracket 210 may be rotatably connected with the first support profile 111 or the second support profile 112; when the mounting bracket 210 is lifted relative to the fracturing skid body 100, the mounting bracket 210 can be slidably connected to the first support profile 111 and the second support profile 112, respectively.

Based on the above arrangement, the mounting bracket 210 can move relatively to the fracturing sled body 100, such as swing or lifting movement, and the fixing firmness and stability of the lifting driving mechanism 220 can be ensured.

With reference to fig. 1-6, based on the above arrangement, embodiments of the present application further disclose a fracturing well site, which includes a plurality of fracturing stations, each of which is provided with a fracturing skid. So, can carry out fracturing operation respectively through the fracturing sledge of every fracturing station to satisfy the operation demand.

In addition, the fracturing well site can further comprise structures such as a variable voltage frequency converter, a cable, a manifold and a protection plate, wherein the cable can be connected with each fracturing sledge so as to supply power to the fracturing sledges and can also transmit signals so as to realize control of the fracturing sledges; the variable-voltage frequency converter is used for providing a variable-voltage variable-frequency function for a fracturing well site so as to meet fracturing requirements; the manifold is connected with each fracturing sledge, so that liquid is conveyed to the fracturing sledges through the manifold, and the liquid is pressurized through the fracturing sledges to meet fracturing requirements; the protection plate is a protection component of the fracturing well site, and can be arranged outside the fracturing operation part to play a protection role.

In some embodiments, the fracturing skid may comprise a mobile fracturing skid as described above, in which case, when the fracturing skid needs to leave the fracturing well site, e.g., needs to reach the maintenance station for maintenance, the fracturing skid body 100 may be carried by the traveling device 200 to move out of the fracturing well site from the fracturing station and to the maintenance station for maintenance work; after the maintenance is finished, the fracturing sledge body 100 is carried by the walking device 200 again to move from the maintenance station to the fracturing station, so that the fracturing operation is continuously performed at the fracturing station.

In other embodiments, the fracturing skid may include a fixed fracturing skid, that is, the traveling apparatus 200 is not provided, in which case, when the fracturing skid needs to leave the fracturing well, for example, when the fracturing skid needs to reach the maintenance station for maintenance, the fracturing skid may be transferred by an external transfer apparatus to transfer the fracturing skid from the fracturing station to the maintenance station for maintenance; and after the maintenance is finished, the fracturing sledge is transferred from the maintenance station to the fracturing station through the transfer equipment again to carry out fracturing operation. The transfer device may be a forklift, a crane, or the like.

Referring to fig. 1 to 6, embodiments of the present application further disclose a maintenance method of a fracture skid, which is applied to the fracture well site, and the disclosed maintenance method of the fracture skid may include:

determining a fracturing sledge needing maintenance in a fracturing well site;

cutting off a manifold and a cable which are connected with a fracturing sledge needing to be maintained;

moving the fracturing sleds needing maintenance out of the corresponding fracturing stations, and transferring the fracturing sleds to the maintenance stations for maintenance operation;

moving the maintained fracturing sledge into a corresponding fracturing station;

connecting the manifold and the cable with the maintained fracturing sledge;

and starting the fracturing sledge after maintenance to perform fracturing operation.

Further, moving the fracturing sleds needing maintenance out of the corresponding fracturing stations, comprising:

the fracturing sledge is moved between a fracturing station and a maintenance station through a walking device 200 of the fracturing sledge;

alternatively, the fracturing skid is moved between the fracturing station and the service station by an external transfer device.

The maintenance process will be described in detail below using the mobile fracturing skid as an example:

identifying the fracturing sleds needing maintenance according to the working requirements of the fracturing well site, for example, determining whether the maintenance time is reached according to the use time of each fracturing sleds recorded in a control system of the fracturing well site, and sending a signal to an alarm device of the fracturing station after the maintenance time is reached so as to prompt maintenance. Then, controlling the fracturing well site to stop supplying, closing a main valve of a manifold, and cutting off a main power supply of the fracturing well site; a manipulator of the remote control robot disconnects a high-low pressure manifold, a cable and the like connected with a fracturing sledge needing maintenance from a well site system; controlling the sliding opening of a protective sliding door around a fracturing station where a fracturing pry needing maintenance is located; the remote control walking device drives the fracturing sledge body to move from the fracturing station to the maintenance station through the walking device; and controlling the protective sliding door to slide and close, normally opening the fracturing well site for operation, and simultaneously maintaining the fracturing sledge needing maintenance at a maintenance station.

After the maintenance of the fracturing sleds is finished, controlling the fracturing well site to stop working, closing a manifold main valve, cutting off a main power supply, controlling a protective sliding door at a corresponding fracturing station to open, remotely controlling the fracturing sleds after maintenance to return to the fracturing station from the maintenance station, controlling the protective sliding door to slide and close, and remotely controlling a manipulator of a robot to connect the fracturing sleds after maintenance with a high-low pressure manifold, a cable and the like again; and (4) restarting the main valve and the main power supply of the fracturing well site, and restarting the fracturing well site for operation.

Based on the process, maintenance operation of the fracturing sleds in the fracturing well site can be achieved, and the service life of the fracturing sleds is prolonged.

To sum up, this application embodiment can realize the free removal of fracturing sledge body 100 through a plurality of running gear 200 to in order to transfer fracturing sledge body 100 to preset the position, and can also realize the switching of fracturing sledge body 100 between mobile state and non-mobile state, both can guarantee to move the convenience that the state moved to fracturing sledge body 100 down, can guarantee the stable operation of fracturing sledge under the non-mobile state again.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims (17)

1. A mobile fracturing sled, comprising: the fracturing skid comprises a fracturing skid body (100) and a plurality of traveling devices (200) distributed at the bottom of the fracturing skid body (100);

every running gear (200) includes mounting bracket (210) and running gear (230), mounting bracket (210) connect in the bottom of fracturing sled body (100), running gear (230) set up in mounting bracket (210), running gear (230) are used for driving fracturing sled body (100) remove.

2. The mobile fracturing sled of claim 1, wherein the traveling device (200) further comprises a lifting driving mechanism (220), the lifting driving mechanism (220) is disposed on the fracturing sled body (100), and a driving end of the lifting driving mechanism (220) is connected with the mounting rack (210);

the mounting frame (210) is movably connected to the fracturing sled body (100);

under the condition that the mobile fracturing sledge is in a mobile state, a plurality of travelling mechanisms (230) are in contact with a supporting surface so as to separate the fracturing sledge body (100) from the supporting surface;

the plurality of travelling mechanisms (230) are each disengaged from the support surface with the mobile fracturing sled in a non-mobile state.

3. The mobile fracturing sled of claim 2, wherein the mounting frame (210) has a first end and a second end opposite to each other, the first end of the mounting frame (210) is rotatably connected to the fracturing sled body (100), and the driving end of the lifting driving mechanism (220) is movably connected to the second end of the mounting frame (210);

the traveling mechanism (230) is arranged between the first end and the second end of the mounting frame (210).

4. The mobile fracturing skid of claim 3, wherein one of the driving end of the lifting driving mechanism (220) and the second end of the mounting bracket (210) is provided with a long hole (222), and the other is provided with a hinge shaft (240);

the hinge shaft (240) is rotatably and movably disposed in the elongated hole (222).

5. The mobile fracturing skid of claim 2, wherein the mounting frame (210) is slidably connected to the fracturing skid body (100) and is liftable with respect to the fracturing skid body (100).

6. The mobile fracturing sled of any one of claims 2 to 5, wherein the lifting drive mechanism (220) comprises an inflatable and deflatable air cell (221), one end of the air cell (221) is fixed to the fracturing sled body (100), and the other end of the air cell (221) is connected to the mounting frame (210).

7. The mobile fracturing skid of claim 1, wherein the running gear (200) comprises at least one of a crawler-type running gear, a roller-type running gear, a crawl-type running gear, a roller-type running gear, and a skid-shoe type running gear.

8. The mobile fracturing skid of claim 7, wherein the mount (210) comprises a first side plate (211), a second side plate (212), a first connecting plate (213) and a second connecting plate (214), the first side plate (211) and the second side plate (212) being spaced apart in a first direction, the first connecting plate (213) and the second connecting plate (214) each being connected between the first side plate (211) and the second side plate (212), respectively, and being spaced apart in a second direction, the first connecting plate (213) being located at a first end of the mount (210), the second connecting plate (214) being located at a second end of the mount (210), the first direction being perpendicular to the second direction;

the running mechanism (230) comprises a rotatable roller (231), the rotating shaft of the roller (231) is respectively connected with the first side plate (211) and the second side plate (212), and the roller (231) is located between the first connecting plate (213) and the second connecting plate (214).

9. The mobile fracturing sled of claim 8, wherein the traveling mechanism (230) further comprises a traveling driving member (232), a speed reducer (233) and a coupling (234), the output end of the traveling driving member (232) is connected with the input end of the speed reducer (233), the output end of the speed reducer (233) is connected with the coupling (234), and the coupling (234) is connected with the rotating shaft of the roller (231);

the mounting frame (210) further comprises a fixed frame (215), the fixed frame (215) is fixed to the first side plate (211), the speed reducer (233) is fixed to the fixed frame (215), and the coupler (234) rotatably penetrates through the fixed frame (215).

10. The mobile fracturing skid according to any of claims 1, 7 to 9, wherein the traveling means (200) is driven by electric, hydraulic or pneumatic motors.

11. The mobile fracturing skid of claim 1, further comprising a plurality of steering devices;

the plurality of steering devices are connected with the plurality of walking devices (200) in a one-to-one correspondence mode, and the plurality of steering devices are connected to the bottom of the fracturing sledge body (100).

12. The mobile fracturing sled of claim 11, further comprising a plurality of first locking devices;

the plurality of first locking devices are connected with the plurality of steering devices in a one-to-one correspondence mode, and the first locking devices are used for locking or unlocking the corresponding steering devices.

13. The mobile fracturing skid of claim 1, further comprising a plurality of second locking devices;

the plurality of second locking devices are connected with the plurality of travelling mechanisms (230) in a one-to-one correspondence mode, and the second locking devices are used for locking or unlocking the corresponding travelling mechanisms (230).

14. The mobile fracturing skid according to any of claims 2 to 5, wherein a plurality of support frames (110) are arranged at the bottom of the fracturing skid body (100), and the plurality of support frames (110) are connected with the plurality of walking devices (200) in a one-to-one correspondence manner;

each support frame (110) comprises a first support section bar (111), a second support section bar (112) and a fixed support plate (113), the first support section bar (111) and the second support section bar (112) are arranged at intervals, and the fixed support plate (113) is connected between the first support section bar (111) and the second support section bar (112);

the mounting frame (210) is movably connected to at least one of the first supporting section bar (111) and the second supporting section bar (112), and the lifting driving mechanism (220) is fixed to the fixed supporting plate (113).

15. A fracturing well site, which is characterized by comprising a plurality of fracturing stations, wherein each fracturing station is provided with a fracturing sledge;

the fracturing sled comprises the mobile fracturing sled of any of claims 1 to 14, or alternatively, the fracturing sled comprises a stationary fracturing sled.

16. A method for servicing a fracture skid for use in the fracture wellsite of claim 15, comprising:

determining a fracturing skid in the fracturing well site needing maintenance;

cutting off a manifold and a cable which are connected with a fracturing sledge needing to be maintained;

moving the fracturing sleds needing maintenance out of the corresponding fracturing stations, and transferring the fracturing sleds to the maintenance stations for maintenance operation;

moving the maintained fracturing sledge into a corresponding fracturing station;

connecting a manifold and a cable with the maintained fracturing sledge;

and starting the fracturing sledge after maintenance to perform fracturing operation.

17. The method of servicing a fracturing skid of claim 16, wherein moving the fracturing skid in need of servicing out of the corresponding fracturing station comprises:

the fracturing sledge is moved between a fracturing station and a maintenance station through a traveling device (200) at the bottom of the fracturing sledge;

alternatively, the fracturing skid is moved between the fracturing station and the service station by an external transfer device.

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