CN209444284U - It is a kind of can Operating Pressure planer-type derrick - Google Patents

Abstract

A gantry-type derrick capable of working under pressure, which consists of two telescopic masts, mast beams, swimming hooks, large fixed pulley blocks, hook hydraulic winches and a support platform. The two telescopic masts are vertically installed on the On the ground, the upper ends of the two are connected by a mast beam, and the lower end is fixed together by a connecting seat. The large fixed pulley block is installed on the mast beam, the support platform is fixed between two telescopic masts, and the large hook hydraulic winch Installed on the supporting platform, the wire rope of the hook hydraulic winch is connected with the swimming hook after passing through the large fixed pulley block. The utility model is equipped with a swimming hook, which not only has a large lifting force, but also is easy to operate and effectively shortens the workover time. The utility model overcomes the defects in lifting force and working efficiency of the existing snubbing frame body, is suitable for snubbing workover operations of various deep water wells, oil wells and gas wells, can improve the workover efficiency, and reduce the consumption of manpower and material resources .

Description

A gantry type derrick capable of working under pressure

technical field

The utility model relates to a gantry type derrick device capable of working over wells under pressure, which can effectively get rid of the dependence of the under pressure equipment on the workover rig, and belongs to the technical field of petroleum.

Background technique

With the increase of oilfield development and the increase of single well production time, no matter for water wells, oil wells or gas wells, maintenance operations are indispensable. There are three methods of workover for pressured wells, one is to workover after decompressing, the other is to use killing fluid to kill the well and then workover, and the third is to workover under pressure. The disadvantages of depressurization and workover are that the time for depressurization and recovery of production in the later period is longer, and the maintenance efficiency is low; there are two main disadvantages of maintenance with killing hydraulic wells. One is that the killing fluid will affect the stability of the original formation , thus affecting the output of the mine, and the second is that the killing fluid will cause serious pollution to the surrounding environment of the well site. On the other hand, workover under pressure is carried out without depressurization or well snubbing, which will neither affect the stability of the original formation nor pollute the environment. Moreover, the operation period is short and the recovery of production in the later stage is quick. It is precisely because of the many advantages of hot workover operations that this technology has been developed rapidly and has been promoted in major oil fields.

The snubbing workover operation must use the snubbing workover equipment, and the snubbing workover equipment is roughly divided into two parts, one part is the wellhead device part, and the other part is the frame part of the snubbing device. At present, most of the frame parts of the pressurized device only play a supporting role and do not have lifting capacity. However, the workover under pressure will inevitably have to run down the pipe string, so this frame without lifting capacity must rely on the workover rig to work. There are two types of existing pressurized work frames with lifting capacity. One is to install a lifting cylinder on the frame. However, since the stroke of the lifting cylinder cannot be too long, the work efficiency of this frame is low. If it is too low, resources such as manpower and material resources will be consumed. The other is to install a single-arm mast on the frame body, which is limited by the self-loading of the mast body. The lifting force of this frame body is small and cannot be used for maintenance operations in deep wells.

Utility model content

The purpose of the utility model is to provide a gantry-type derrick capable of working under pressure with large lifting force and high workover efficiency to meet the requirements of oilfield workover for the work frame.

Problem described in the utility model is solved with following technical scheme:

A gantry-type derrick capable of working under pressure, which consists of two telescopic masts, mast beams, swimming hooks, large fixed pulley blocks, hook hydraulic winches and a support platform. The two telescopic masts are vertically installed on the On the ground, the upper ends of the two are connected by a mast beam, and the lower ends are fixed together by a connecting seat. The large fixed pulley block is installed on the mast beam, the support platform is fixed between two telescopic masts, and the large hook hydraulic winch Installed on the support platform, the wire rope of the hook hydraulic winch is connected with the swimming hook after passing through the large fixed pulley block.

The above-mentioned gantry-type derrick capable of working under pressure has the same structure of the two telescopic masts. Each telescopic mast includes a support beam, an inner box, an outer box and a telescopic drive device. The support beam is inserted into the inner box and connected with the inner box. The side wall of the body is in sliding contact, the inner box is inserted into the outer box and is in sliding contact with the side wall of the outer box, and the lower part of the outer box of the two telescopic masts is equipped with hydraulic outriggers, and the hydraulic outriggers are supported on the ground; The lower parts of the two telescopic masts are fixed together through the connecting seat, the middle and lower parts are connected through the supporting platform, and the upper ends of the supporting beams of the two telescopic masts are connected into one body through the mast crossbeam; the telescopic driving device includes a gantry hydraulic winch and seven pulleys. One pulley is installed at the upper end of the outer box, the second pulley and the seventh pulley are installed at the lower end of the inner box, the third pulley and the sixth pulley are installed at the upper end of the inner box, the fourth pulley and the fifth pulley are installed at the lower end of the support beam, so The gantry hydraulic winch is installed on the connecting seat, and the wire rope of the gantry hydraulic winch winds through the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley and the seventh pulley and then connects with the outer box The upper end is fixedly connected.

The above-mentioned gantry type derrick capable of working under pressure also includes a lifting platform and a lifting hydraulic cylinder, the lifting platform is located between two telescopic masts, and the cylinder body of the lifting hydraulic cylinder is vertically fixed on the support On the platform, the upper end of the piston rod of the lifting hydraulic cylinder is connected with the lifting platform.

In the above-mentioned gantry type derrick capable of working under pressure, two hydraulic outriggers are provided at the lower part of the outer box of each telescopic mast, and the four hydraulic outriggers of the two outer boxes are respectively located on the four corners of the same rectangle.

The above-mentioned gantry-type derrick capable of working under pressure also includes an operation platform, which is fixed on the upper end of the outer box of the telescopic mast, and is used to provide a place for personnel to operate and install an operation control system.

In the gantry-type derrick capable of working under pressure, both the operating platform and the supporting platform include a fixed part and a folding part, the fixed part is fixedly connected to the outer box of the telescopic mast, and the folding part is hinged to the fixed part.

The above-mentioned gantry-type derrick capable of working under pressure also includes a floating auxiliary hook, an auxiliary hook hydraulic winch, and a small fixed pulley block. The small fixed pulley block is installed on the mast beam, and the auxiliary hook hydraulic winch is installed on the supporting platform. , the steel wire rope of the auxiliary hook hydraulic winch is connected with the swimming auxiliary hook after passing through the small fixed pulley block.

For the above-mentioned gantry type derrick capable of working under pressure, a load-bearing platform is provided on the upper part of the connecting seat, and the load-bearing platform is used to install the wellhead device and is set to bear the weight of the device.

For the gantry type derrick capable of working under pressure, four lifting hydraulic cylinders (10) are provided, and they are evenly distributed around the vertical centerline of the lifting platform (12).

In the gantry type derrick capable of working under pressure, the upper ends of the support beam (3-3), the inner box (3-2) and the outer box (3-1) are all connected to the ground through guy ropes.

The utility model has its own swimming hook, which not only has a large lifting force, but also is very convenient to operate, and effectively shortens the workover time. The derrick overcomes the defects of the existing snubbing frame in terms of lifting force and work efficiency, and is suitable for snubbing workover operations of water wells, oil wells and gas wells of various depths, which can greatly improve the workover efficiency and reduce manpower and material resources. consume.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic diagram of the retracted state of the utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a schematic diagram of the extended state of the utility model;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is the structural representation of gantry mast;

Fig. 6 is the top view of the utility model after the mast beam, the large fixed pulley block and the small fixed pulley block are removed;

Fig. 7 is a schematic structural view of the telescopic driving device.

The list of each label in the figure is: 1, small fixed pulley block, 2, mast beam, 3, telescopic mast, 3-1, outer box body, 3-1-1, the third gantry structure, 3-1-2, the first Six gantry structural parts, 3-1-3, outer box side panels, 3-1-5, outer box column, 3-2, inner box body, 3-2-1, second gantry structural parts, 3-2- 2. The fifth gantry structure, 3-2-3, the inner box column, 3-2-4, the inner box side plate, 3-3, the support beam, 3-3-1, the first gantry structure, 3- 3-2. The fourth gantry structure, 3-3-3. Support column, 4. Auxiliary hook hydraulic winch, 5. Telescopic drive device, 5-1. The first pulley, 5-2. The second pulley, 5- 3. The third pulley, 5-4, the fourth pulley, 5-5, the fifth pulley, 5-6, the sixth pulley, 5-7, the seventh pulley, 5-8, the gantry hydraulic winch, 5-9, Wire rope, 6. Hydraulic outriggers, 7. Load-bearing platform, 8. Support platform, 9. Hook hydraulic winch, 10. Lifting hydraulic cylinder, 11. Operating platform, 12. Lifting platform, 13. Dading pulley block, 14 , positioning pin hole, 15, connecting seat, 16, swimming big hook.

Detailed ways

Referring to Fig. 1 and Fig. 2, the utility model includes two gantry masts 3, a mast beam 2, a large fixed pulley block 13, a small fixed pulley block 1, four lifting hydraulic cylinders 10, a swimming hook 16, a lifting platform 12, Operating platform 11, supporting platform 8, load-bearing platform 7, large hook hydraulic winch 9, auxiliary hook hydraulic winch 4, four hydraulic supporting legs 6 and connecting seat 15. The mast is not directly installed on the ground. There are two hydraulic outriggers on each piece of mast, and two pieces of mast have four hydraulic outriggers. These four hydraulic outriggers are placed directly on the ground to form a stable structure. If the ground is soft, a larger pad can be placed under the hydraulic outrigger.

The two ends of the mast beam 2 are respectively connected to the upper parts of the two gantry masts 3 through bolt assemblies to form a gantry type. The maximum bearing capacity of the mast beam 2 can reach 130 tons, that is, it can safely bear within 130 tons. Four hydraulic support legs 6 are used for lifting and lowering the whole frame structure.

Referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the structures of the two gantry masts 3 are the same, with a telescopic function, and each gantry mast 3 includes an outer box body 3-1, an inner box body 3-2, and a support beam 3 -3 and the telescopic driving device 5, wherein the outer box body 3-1 is composed of the third gantry structure part 3-1-1, the sixth gantry structure part 3-1-2, the outer box side plate 3-1-3 and The outer box column 3-1-5 is assembled into a box with an upper opening by welding; the inner box 3-2 is composed of the second gantry structure 3-2-1, the fifth gantry structure 3-2-2, The inner box side plate 3-2-4 and the inner box column 3-2-3 are assembled into an upper open box by welding; the support beam 3-3 is composed of the first gantry structure 3-3-1, the fourth gantry The structural member 3-3-2 and the support column 3-3-3 are welded. The support beam 3-3 is in the cavity of the inner box body 3-2, and the inner box body 3-2 is in the cavity of the outer box body 3-1, forming a three-stage telescopic structure as a whole, and the extended state and the retracted state are equal to each other. There is a pin shaft locking structure for locking (the positioning pin can be inserted into the positioning pin hole 14 to lock), and the extension length can be adjusted according to the specific requirements of the pressurized equipment. The telescopic driving device 5 is used for pulling up the inner box body 3-2 and the support beam 3-3.

The mast of the utility model is a three-level mast, and the lower level is a fixed level, and there are 5-8 connections between the fixed levels of the two masts, and the connection mode is completed by rectangular steel welding.

During the process of hot work, the staff mainly carry out related operations on the operation platform 11. According to actual needs, the hot work operation control cabinet can also be installed on the operation platform 11 to control the corresponding components. There is space for the control cabinet and associated operators.

The lifting platform 12 is used to install corresponding components in the process of working with pressure, and the lifting hydraulic cylinder 10 can make the platform move up and down. Four lifting hydraulic cylinders 10 are arranged, and the four lifting hydraulic cylinders are arranged symmetrically to the center. The lower end of the lifting hydraulic cylinder 10 is assembled with the support platform 8 through a bolt assembly, and the upper end of the hydraulic cylinder is assembled with the lifting platform 12 through a bolt assembly.

Both the operating platform 11 and the support platform 8 are composed of two parts, namely a fixed part and a folding part, the fixed part is fixedly connected with the outer box of the telescopic mast, and the folding part is hinged with the fixed part.

The hook hydraulic winch 9 and the auxiliary hook hydraulic winch 4 are assembled with the support platform 8 through bolt assemblies.

Referring to Fig. 7, the telescopic driving device 5 includes a first pulley 5-1, a second pulley 5-2, a third pulley 5-3, a fourth pulley 5-4, a fifth pulley 5-5, and a sixth pulley 5-6. , the seventh pulley 5-7 and the gantry hydraulic winch 5-8, the gantry hydraulic winch 5-8 is assembled with the connecting seat 15 through the bolt assembly, the first pulley 5-1 is fixed on the third gantry structure at the upper end of the outer box 3-1 3-1-1; the third pulley 5-3 and the sixth pulley 5-6 are fixed on the second gantry structure 3-2-1 at the upper end of the inner box 3-2; the fourth pulley 5-4 and the sixth pulley The fifth pulley 5-5 is fixed on the fourth gantry structure 3-3-2 at the lower end of the support beam 3-3; On the five gantry structural parts 3-2-2; the wire rope 5-9 of the gantry hydraulic winch 5-8 bypasses the seven pulleys in turn and is fixed on the third gantry structural part 3-1-1 at the upper end of the outer box 3-1 , when the gantry hydraulic winch 5-8 takes in the rope, the inner box body 3-2 and the support beam 3-3 are pulled up by seven pulleys.

Four hydraulic outriggers 6 are respectively assembled with two gantry masts 3 through bolt assemblies, and are used to lift and lower the entire frame structure. Realize the balanced lifting of the whole frame body, and can also level the skewed frame body, and each leg can be locked at any position within its own travel range, and the locking method adopts double-action locking for safety considerations , It has both hydraulic locking mechanism and mechanical locking mechanism to realize hydraulic and mechanical double locking.

In order to prevent the inner box body 3-2 from coming out of the outer box body 3-1, an inner box body limit block can be set at the upper end of the outer box body 3-1. Similarly, in order to prevent the support beam 3-3 from the inner box body 3-1 2, the upper end of the inner box body 3-2 can be provided with a support beam limit block.

The utility model is provided with a stay rope, and the overall device needs to be tightened with a stay rope after it stands steadily above the wellhead to prevent the frame body from shaking. The whole frame body is provided with 12 stay ropes, and the frame body has two gantry masts. A gantry mast is divided into three levels, and each level is provided with two stay ropes, so there are 12 stay ropes in total, and every four stay ropes of the 12 stay ropes are arranged symmetrically at the same height, and the 12 stay ropes make the whole The frame is integrated with the ground, which can effectively prevent the frame from shaking and provide a safety guarantee for the entire pressurized operation.

Claims (10)

1. A gantry type derrick capable of working under pressure is characterized in that it comprises two telescopic masts (3), mast beams (2), swimming hooks (16), large fixed pulley blocks (13), large Hook hydraulic winch (9) and support platform (8), two telescopic masts (3) are vertically installed on the ground through outriggers, the upper ends of the two are connected by mast beams (2), and the lower ends are fixed by connecting seats (15) Together, the large fixed pulley block (13) is installed on the mast beam (2), the support platform (8) is fixed between two telescopic masts (3), and the hook hydraulic winch (9) is installed on On the supporting platform (8), the wire rope of the hook hydraulic winch (9) is connected with the swimming hook (16) after winding through the large fixed pulley block (13). 2. The gantry type derrick capable of working under pressure according to claim 1, characterized in that, the structures of the two telescopic masts (3) are identical, and each telescopic mast (3) includes a support beam (3-3), an inner Box (3-2), outer box (3-1) and telescopic driving device (5), the support beam (3-3) is inserted into the inner box (3-2) and connected with the inner box (3- 2) is in sliding contact with the side wall of the outer box (3-1), the inner box (3-2) is inserted into the outer box (3-1) and is in sliding contact with the side wall of the outer box (3-1), and the two telescopic masts (3) The lower part of the outer box body (3-1) is equipped with hydraulic outriggers (6), and the hydraulic outriggers are supported on the ground. The lower parts of the two telescopic masts are fixed together by connecting seats (15), and the middle and lower parts are supported by a support platform (8 ), the upper ends of the support beams (3-3) of the two telescopic masts (3) are connected into one body through the mast crossbeam (2); the telescopic driving device (5) includes a gantry hydraulic winch (5-8) and seven pulleys , the first pulley (5-1) is installed on the upper end of the outer box (3-1), and the second pulley (5-2) and the seventh pulley (5-7) are installed on the lower end of the inner box (3-2). Three pulleys (5-3) and the 6th pulley (5-6) are arranged on inner casing (3-2) upper end, and the 4th pulley (5-4) and the 5th pulley (5-5) are installed on support beam ( 3-3) the lower end, the gantry hydraulic winch (5-8) is installed on the connection seat (15), and the wire rope (5-9) of the gantry hydraulic winch (5-8) is wound around the first pulley (5-1) in turn ), the second pulley (5-2), the third pulley (5-3), the fourth pulley (5-4), the fifth pulley (5-5), the sixth pulley (5-6) and the seventh pulley (5-7) is fixedly connected with outer casing (3-1) upper end behind. 3. The gantry type derrick capable of working under pressure according to claim 1 or 2, characterized in that, the composition also includes a lifting platform (12) and a lifting hydraulic cylinder (10), and the lifting platform (12 ) between the two telescopic masts (3), the cylinder body of the lifting hydraulic cylinder (10) is vertically fixed on the support platform (8), and the upper end of the piston rod of the lifting hydraulic cylinder (10) is in contact with the lifting platform (12) CONNECTION. 4. The gantry type derrick capable of working under pressure according to claim 3, characterized in that, the lower part of the outer box (3-1) of each telescopic mast (3) is provided with two hydraulic legs (6 ), the four hydraulic support legs (6) of the two outer boxes (3-1) are respectively located on the four corners of the same rectangle. 5. The gantry type derrick capable of working under pressure according to claim 4, characterized in that the composition also includes an operating platform (11), and the operating platform (11) is fixed on the outer box of the telescopic mast (3) (3-1) The upper end is used to provide a personnel operation site and install an operation control system. 6. The gantry type derrick capable of working under pressure according to claim 5, characterized in that, the operating platform (11) and the support platform (8) both include a fixed part and a folding part, and the fixed part and the telescopic mast (3) The outer box body (3-1) is fixedly connected, and the folding part is hinged to the fixed part. 7. The gantry type derrick capable of working under pressure according to claim 6, characterized in that, the composition also includes a swimming auxiliary hook, an auxiliary hook hydraulic winch (4) and a small fixed pulley block (1), the small fixed The pulley block (1) is installed on the mast beam (2), and the auxiliary hook hydraulic winch (4) is installed on the support platform (8), and the steel wire rope of the auxiliary hook hydraulic winch (4) is wound with the small fixed pulley block (1) and Swimming auxiliary hook connection. 8. The gantry type derrick capable of working under pressure according to claim 6, characterized in that, the upper part of the connecting seat (15) is provided with a load-bearing platform (7), and the load-bearing platform is used for installing wellhead devices, carrying The weight of this device is set. 9. The gantry-type derrick capable of working under pressure according to claim 8, characterized in that four lifting hydraulic cylinders (10) are arranged, and they are evenly distributed around the vertical centerline of the lifting platform (12) . 10. The gantry type derrick capable of working under pressure according to claim 9, characterized in that, the support beam (3-3), the inner box body (3-2) and the outer box body (3-1) The upper ends are all connected to the ground through stay ropes.