Simulation ocean module drilling machine well drilling device

Abstract

A simulation ocean module drilling machine well drilling device relates to the technical field of ocean platform structure and equipment safety evaluation, and comprises a derrick body and a base, the derrick body is fixedly mounted on the base, and a first simulation swing device arranged at the upper end of the derrick and a second simulation swing device arranged on the base are arranged on the derrick body. Influences of wind power and ocean platform deck swing on the derrick are simulated respectively. The derrick body is of a sectional structure, sections are rigidly and detachably connected, and different structural strength states are simulated by replacing damaged sections and non-damaged sections; a hydraulic cylinder and a large hook are arranged on the upper portion of the derrick and connected through a steel wire rope, and the hydraulic cylinder drives the large hook to move up and down to simulate static load or dynamic load in drilling operation. The device is low in cost and convenient to test, can effectively simulate various working conditions in an actual drilling environment, and is suitable for experimental research, performance evaluation and safety evaluation of marine drilling equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of ocean platform structure and equipment safety assessment technology, especially relates to a kind of simulation ocean module drilling rig drilling device. BACKGROUND

[0002] Ocean drilling rig derrick is in harsh marine environment, needs to bear wind and wave, current, working load, multiple complex load, and its structural strength, rigidity, stability directly determine operation safety.In addition, the floating swing characteristics of ocean platform deck can cause derrick to produce pitch, roll and other movements with platform, and long-term alternating load is easy to cause structural fatigue failure.In order to guarantee the safety of staff, the safety of drilling, it is extremely important to carry out structural performance verification and optimization to ocean drilling rig derrick.

[0003] However, for ocean drilling rig derrick this kind of large steel structure, the actual prototype manufacturing cost is quite high, on the other hand, due to site conditions, noise interference and test cost and other factors limit, actual prototype field dynamic test is often difficult to carry out smoothly.

[0004] Therefore, it is necessary to make a physical model of equal scale to simulate the dynamic test of ocean drilling rig derrick. UTILITY MODEL CONTENT

[0005] In order to realize the dynamic performance test of ocean drilling rig derrick, the utility model provides a kind of simulation ocean module drilling rig drilling device, the utility model is scale physical model, to model in the way of physics to exert simulation load in different position and direction, and detect the change of the strength, rigidity, stability etc. of derrick body under the load.

[0006] The utility model provides a technical scheme is: a kind of simulated ocean module drilling rig drilling device, including derrick body and base, derrick body is fixedly installed on base;The upper end of derrick body is provided with first simulated swing device, first simulated swing device exerts sway load to derrick body, to simulate the sway movement generated by wind to derrick body;When first simulated swing device is placed transversely, it exerts lateral swing force to derrick body, simulates that derrick body is laterally swung by sea wind;When first simulated swing device is placed longitudinally, it exerts longitudinal swing force to derrick body, simulates that derrick body is longitudinally swung by sea wind;Second simulated swing device is provided on base, second simulated swing device exerts sway load to base, to simulate the sway generated by ocean platform deck to drive derrick body;When second simulated swing device is placed transversely, it exerts lateral swing force to base, simulates that ocean platform deck is laterally swung by seawater fluctuation;When second simulated swing device is placed longitudinally, it exerts longitudinal swing force to base, simulates that ocean platform deck is longitudinally swung by seawater fluctuation;Derrick body is segmented structure in height direction, rigid connection and detachable between segment and segment, the structural strength difference of derrick body under damaged state and undamaged state is realized by replacing damaged segment and undamaged segment;Hydraulic cylinder is provided on the upper portion of derrick body, large hook is provided below hydraulic cylinder, large hook is connected with hydraulic cylinder by wire rope, and the up-down movement of large hook is driven by hydraulic cylinder, to simulate static load or dynamic load when large hook hoists drilling tool in drilling operation.

[0007] Further technical scheme is: the first simulated swing device includes first rotary table, first connecting rod and first swing assembly, first rotary table is provided with eccentric shaft with eccentricity, the swing assembly includes sliding rod, the middle portion of sliding rod is sleeved with rotating sleeve, the rotating sleeve can only rotate around sliding rod, and cannot slide along sliding rod, the rotating sleeve is hinged with one end of first connecting rod, the other end of first connecting rod is hinged with eccentric shaft of first rotary table, the rotation of first rotary table drives the sliding of rotating sleeve through first connecting rod, and then drives the sliding of sliding rod in its own axial direction, the two ends of sliding rod are respectively provided with guide cylinders by sliding sleeve, the guide cylinders are respectively fixedly connected with derrick body, the two sides of sliding rod are respectively threadedly connected with adjusting rings, and spring is arranged between each adjusting ring and guide cylinder;When sliding rod slides left and right, guide cylinder and derrick swing are respectively pushed by spring.

[0008] Further: the threads on the two sides of sliding rod are reverse threads, under the condition that adjusting ring does not rotate, when sliding rod rotates, the positions of two adjusting rings on sliding rod can be changed simultaneously, the compression amounts of two springs can be changed synchronously, so that the size of swing force is changed;In order to limit the rotation of adjusting ring, sliding sleeve is fixedly connected to the outer wall of adjusting ring, the axial direction of sliding sleeve is same with the axial direction of adjusting ring, guide shaft that slides with sliding sleeve is fixedly arranged on derrick body, under the action of guide shaft, when sliding rod rotates, adjusting ring only generates displacement in the axial direction of sliding rod.

[0009] Further: one end of the sliding rod extends from the guide cylinder and the extending part is connected with a chain wheel A by spline, a chain wheel B is arranged at the lower end of the derrick body, the chain wheel A and the chain wheel B are matched by a chain, so that the rotation of the chain wheel A on the ground is realized.

[0010] The further technical scheme is: the second simulation swing device comprises a second rotary disc, a second connecting rod and a second swing assembly, the second swing assembly comprises a spring cylinder, a sliding block is arranged in the spring cylinder, one end of the second connecting rod extends into the spring cylinder and is fixedly connected with the sliding block, springs are arranged on both sides of the sliding block, the second connecting rod is of a telescopic structure in screw connection, the second rotary disc is provided with at least three eccentric holes with different eccentric distances, and the other end of the second connecting rod can be inserted into the eccentric hole.

[0011] Compared with the prior art, the beneficial effects of the utility model lie in:

[0012] 1. The utility model discloses a scale simulation model of a drilling derrick. A first simulation swing device applies a simulation load to the model to simulate the swing of the derrick body caused by wind force, and the swing force is adjustable, thereby simulating the wind disturbance of a derrick body caused by a wind of different intensity. A second simulation swing device applies a swing load to the base to simulate the swing of the derrick body caused by the swing of a platform deck. The swing force is also adjustable, thereby simulating the influence of the swing of a platform deck of different intensity on the derrick body.

[0013] 2. Because the utility model is a simulation model, the manufacturing cost is much lower than that of an actual prototype. In addition, the test cost, noise interference and site limitation of the utility model are also superior to those of an actual prototype.

[0014] 3. The utility model can realize the difference in the structural strength of the derrick body in the damaged state and the undamaged state by replacing the damaged section and the undamaged section of the derrick.

[0015] 4. The utility model drives the hook to move up and down by a hydraulic cylinder to simulate the static load or dynamic load of the hook when hoisting a drilling tool in a drilling operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a front view of the utility model when the derrick body is provided with a first simulation swing device.

[0017] Figure 2 Fig. 2 is a side view of the utility model when the derrick body is provided with a first simulation swing device.

[0018] Figure 3 Fig. 3 is a structural schematic view of the first simulation swing device of the utility model.

[0019] Figure 4 is the schematic diagram of the connection state of the first rotating disc, the first connecting rod and the rotating sleeve in the utility model.

[0020] Figure 5 is the front view of the derrick body with the second simulation swing device in the utility model.

[0021] Figure 6 is the side view of the derrick body with the second simulation swing device in the utility model.

[0022] Figure 7 is the structural schematic diagram of the second simulation swing device in the utility model.

[0023] Figure 8 is the front view of the derrick body with the hydraulic cylinder and the hook in the utility model.

[0024] Figure 9 is the structural view of the utility model when replacing a section of damaged derrick.

[0025] In the drawing: 1, base; 2, derrick body; 3, first simulation swing device; 4, second simulation swing device; 5, hydraulic cylinder; 6, hook; 2001, damaged section; 2002, undamaged section; 3001, guide cylinder; 3002, adjusting ring; 3003, limiting ring; 3004, sliding rod; 3005, chain wheel A; 3006, rotating sleeve; 3007, first connecting rod; 3008, first rotating disc; 3009, eccentric shaft; 4001, spring cylinder; 4002, sliding block; 4003, second connecting rod; 4004, eccentric hole; 4005, second rotating disc. DETAILED DESCRIPTION

[0026] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0027] The utility model discloses a derrick body 2 and base 1, derrick body 2 fixed mounting on base 1. The utility model is according to the actual prototype of drilling rig derrick according to 1:10 similar proportion and is made into the scale model. The derrick part is composed of five sections, is connected with the "herringbone" through the pin shaft. The base 1 is used for simulating the ocean platform deck, and the swing of the ocean platform deck will also affect the performance of the derrick body 2.

[0028] As Figure 1 ,2 As shown, the upper end of the derrick body 2 is provided with a first simulated swing device 3, which applies a swing load to the derrick body 2 to simulate the swing motion of the derrick body 2 caused by wind. As shown in Figure 1 As shown, when the first simulated swing device 3 is placed transversely, it applies a transverse swing force to the derrick body 2, at which time the derrick body 2 is simulated to be swung transversely by sea wind. As shown in Figure 2 As shown, when the first simulated swing device 3 is placed longitudinally, it applies a longitudinal swing force to the derrick body 2, simulating the derrick body 2 to be swung longitudinally by sea wind.

[0029] As shown in Figure 3 、 4 As shown, the first simulated swing device 3 includes a first rotating disc 3008, a first connecting rod 3007 and a swing assembly. The first rotating disc 3008 is driven by a driving device (which can be a motor and a speed reducer) fixedly installed outside the derrick body 2, and is installed on the output shaft of the driving device. The first rotating disc 3008 is provided with an eccentric shaft 3009 arranged eccentrically. The swing assembly includes a sliding rod 3004, the middle part of which is sleeved with a rotating sleeve 3006. The sliding rod 3004 at both ends of the rotating sleeve 3006 is provided with a limiting ring 3003. Under the limitation of the limiting ring 3003, the rotating sleeve 3006 can only rotate around the sliding rod 3004, but cannot slide along the sliding rod 3004. The rotating sleeve 3006 is hingedly connected to one end of the first connecting rod 3007, and the other end of the first connecting rod 3007 is hingedly connected to the eccentric shaft 3009 of the first rotating disc 3008. The rotation of the first rotating disc 3008 drives the rotating sleeve 3006 to slide in its own axial direction through the first connecting rod 3007, and further drives the sliding rod 3004 to slide in its own axial direction. The sliding rod 3004 is sleeved with a guide cylinder 3001 at both ends, respectively, and the guide cylinder 3001 is fixedly connected to the derrick body 2, respectively. The sliding rod 3004 is threadedly connected with an adjusting ring on both sides, and a spring is arranged between each adjusting ring and the guide cylinder 3001. When the sliding rod 3004 slides in its axial direction, the guide cylinder 3001 and the derrick body 2 are swung by the spring. By rotating the adjusting ring relative to the position of the guide cylinder 3001, the stiffness of the spring can be adjusted, and the size of the simulated wind can be adjusted.

[0030] The utility model discloses a kind of mechanism for adjusting the position of adjusting ring 3002 on ground: the screw thread of sliding rod 3004 both sides is reverse thread, under the condition that adjusting ring does not rotate, the position of two adjusting rings on sliding rod 3004 can be changed simultaneously when sliding rod 3004 rotates, spring can be compressed or decompressed simultaneously, to change the size of swing force degree;In order to limit the rotation of adjusting ring, sliding sleeve is fixedly connected on the outer wall of adjusting ring, the axial direction of sliding sleeve is same with the axial direction of adjusting ring, guide shaft that slidingly cooperates with sliding sleeve is fixedly arranged on well rig body 2, under the action of guide shaft, adjusting ring only generates the displacement of the axial direction of sliding rod 3004 when sliding rod 3004 rotates.The end of sliding rod 3004 extends from guide cylinder 3001, and the extending part is connected with sprocket A 3005 by spline, sprocket B (not shown in the drawing) is arranged at the lower end of well rig body 2, and sprocket A 3005 cooperates with sprocket B through chain (not shown in the drawing), to realize the rotation of sprocket A 3005 driven on ground.It needs to be explained that when sliding rod 3004 does not need to rotate, chain can be disassembled from sprocket B, since the distance between two sprockets can be changed when sprocket A 3005 slides with sliding rod 3004, chain can be damaged by tension.

[0031] Second simulation swing device 4 is arranged on base 1, and second simulation swing device 4 applies swing load to base 1 to simulate the swing of offshore platform deck to well rig body 2. Figure 5 As shown, when second simulation swing device 4 is placed horizontally, it applies horizontal swing force to base 1 to simulate the horizontal swing of offshore platform deck with seawater fluctuation. Figure 6 As shown, when second simulation swing device 4 is placed vertically, it applies vertical swing force to base 1 to simulate the vertical swing of offshore platform deck with seawater fluctuation. Through the simulation swing of offshore platform deck, the detection of the performance influence of well rig body 2 is realized.

[0032] Well rig body 2 is segmented in height direction (five segments in the embodiment), and segments are rigidly connected and detachable. Figure 9 As shown, the structural strength difference of well rig body 2 in damaged state and undamaged state is realized by replacing damaged segment 2001 and undamaged segment 2002. Figure 9 As shown, the strength of well rig under the same swing is retested after replacing damaged segment 2001 well rig.

[0033] As shown, the strength of well rig under the same swing is retested after replacing damaged segment 2001 well rig. Figure 8As shown in the figure, the upper part of the derrick body 2 is provided with a hydraulic cylinder 5, and a hook 6 is arranged below the hydraulic cylinder 5, the hook 6 is connected with the hydraulic cylinder 5 through a wire rope, and the up-down movement of the hook 6 is driven through the hydraulic cylinder 5, so as to simulate the static load or dynamic load when the hook 6 hoists a drilling tool in a drilling operation.

[0034] As shown in the figure, Figure 7 As shown in the figure, the second simulation swing device 4 includes a second turntable 4005, a second connecting rod 4003 and a second swing assembly, the second swing assembly includes a spring barrel 4001, a sliding block 4002 is arranged in the spring barrel 4001, one end of the second connecting rod 4003 extends into the spring barrel 4001 and is fixedly connected with the sliding block 4002, springs are arranged on both sides of the sliding block 4002, the second connecting rod 4003 is a telescopic structure in a threaded connection mode, the second turntable 4005 is provided with at least three eccentric holes 4004 with different eccentric distances, the other end of the second connecting rod 4003 can be inserted into the eccentric hole 4004, firstly, by adjusting the length of the second connecting rod 4003 and the insertion position of the second connecting rod 4003 on the second turntable 4005, the stroke of the sliding block 4002 in the spring barrel 4001 can be changed, the stroke change will cause the compression amount of the spring to change, and then the swing force of the base 1 is affected.

[0035] The utility model discloses a hardware device of derrick simulation model mainly solves the problem of simulating wind swing, simulating ocean platform deck swing, simulating derrick has the problem of lossless / lossless performance and simulating dynamic load and static load.

[0036] The above-mentioned strength test, rigidity test and other modes / methods can be carried out by using conventional test methods in the field, and the modes / methods are not within the protection scope of the utility model, and will be simply described below.

[0037] The strength analysis process of the scale derrick model is as follows: firstly, the test working condition is determined, and the mechanical parameters such as the elastic modulus and allowable stress of the model material are confirmed; secondly, strain sensors are pasted at the stress concentration parts such as the derrick truss nodes, columns and diagonal braces, and after zero point calibration and load calibration, the data acquisition system is connected; under static working condition, the load is applied in stages, and after the load at each stage is stable, the strain data is collected, under dynamic working condition, the frequency and amplitude of wind load, vibration and hook 6 dynamic load are set, and real-time dynamic strain data is synchronously collected; then, the strain data is converted into stress value based on Hooke's law, the stress distribution characteristics are drawn, and the peak stress of each measuring point is extracted; finally, the peak stress is compared with the material allowable stress, the strength of the derrick under each working condition is checked, the weak position of the strength is located, and the working condition range of safe bearing is summarized.

[0038] The rigidity performance of the scale model was studied based on the electric servo load simulation device, hydraulic hook system and strain-displacement monitoring components. First, the rigidity test conditions were determined, the load and allowable deformation were converted according to the similarity criterion, the sensors were arranged at the key positions such as the top of the derrick and the nodes and the calibration was completed. Then, the static loading test and dynamic loading test were carried out, and the load, displacement and strain data were collected synchronously. The rigidity coefficient was calculated by drawing the load-displacement curve, the rigidity compliance was determined by comparing the maximum deformation and the allowable deformation, and the weak position of rigidity was located. The research results provide experimental basis for the structural rigidity optimization design of the actual offshore drilling derrick.

Claims

1. A simulated marine modular drilling rig drilling device, comprising a derrick body (2) and a base (1), wherein the derrick body (2) is fixedly mounted on the base (1), characterized in that: The upper end of the derrick body (2) is provided with a first simulated swing device (3). The first simulated swing device (3) applies a swing load to the derrick body (2) to simulate the swing motion generated by the wind on the derrick body (2). A second simulated swing device (4) is provided on the base (1). The second simulated swing device (4) applies a swing load to the base (1) to simulate the swing of the deck of the offshore platform on the derrick body (2). The derrick body (2) is a segmented structure in the height direction. The segments are rigidly connected and detachable. The structural strength difference of the derrick body (2) in the damaged state and the undamaged state is achieved by replacing the damaged segment (2001) and the undamaged segment (2002). The upper part of the derrick body (2) is equipped with a hydraulic cylinder (5), and a large hook (6) is provided below the hydraulic cylinder (5). The large hook (6) is connected to the hydraulic cylinder (5) by a steel wire rope. The up and down movement of the large hook (6) is driven by the hydraulic cylinder (5) to simulate the static load or dynamic load when the large hook (6) lifts the drilling tool during drilling operations.

2. The simulated marine modular drilling rig drilling device according to claim 1, characterized in that: The first simulated swing device (3) includes a first turntable (3008), a first connecting rod (3007), and a first swing assembly. The first turntable (3008) has an eccentrically set eccentric shaft (3009). The swing assembly includes a sliding rod (3004), and a rotating sleeve (3006) is fitted in the middle of the sliding rod (3004). The rotating sleeve (3006) can only rotate around the sliding rod (3004) and cannot slide along the sliding rod (3004). (3006) is hinged to one end of the first connecting rod (3007), and the other end of the first connecting rod (3007) is hinged to the eccentric shaft (3009) of the first turntable (3008). Guide cylinders (3001) are slidably fitted at both ends of the sliding rod (3004). The guide cylinders (3001) are fixedly connected to the derrick body (2). Adjusting rings are threadedly connected to both sides of the sliding rod (3004). A spring is provided between each adjusting ring and the guide cylinder (3001).

3. The simulated marine modular drilling rig drilling device according to claim 2, characterized in that: The threads on both sides of the sliding rod (3004) are reverse threads. The outer wall of the adjusting ring is fixed with a sliding sleeve. The axial direction of the sliding sleeve is the same as that of the adjusting ring. The derrick body (2) is fixed with a guide shaft that slides with the sliding sleeve. Under the action of the guide shaft, when the sliding rod (3004) rotates, the adjusting ring generates an axial displacement of the sliding rod (3004).

4. The simulated marine modular drilling rig drilling device according to claim 3, characterized in that: One end of the sliding rod (3004) extends from the guide cylinder (3001) and a sprocket A (3005) is splined on the extended part. A sprocket B is set at the lower end of the derrick body (2). Sprocket A (3005) and sprocket B are connected by a chain, thereby driving sprocket A (3005) to rotate on the ground.

5. The drilling device for a simulated marine modular drilling rig according to claim 1, characterized in that: The second simulated swing device (4) includes a second turntable (4005), a second connecting rod (4003), and a second swing assembly. The second swing assembly includes a spring cylinder (4001), a sliding block (4002) is provided inside the spring cylinder (4001), one end of the second connecting rod (4003) extends into the spring cylinder (4001) and is fixedly connected to the sliding block (4002). Springs are provided on both sides of the sliding block (4002). The second connecting rod (4003) is a threaded telescopic structure. The second turntable (4005) has at least three eccentric holes (4004) with different eccentric distances. The other end of the second connecting rod (4003) can be inserted into the eccentric hole (4004).

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