A stable derrick

Abstract

The application relates to the technical field of resource exploration and development equipment, in particular to a stable derrick, and the technical scheme is characterized in that the derrick comprises a derrick main body, a load dispersion assembly and a position adjusting assembly used for adjusting the relative positions of the derrick main body and the load dispersion assembly, the derrick main body is installed on the position adjusting assembly, and the position adjusting assembly is installed on the load dispersion assembly, so that the pressure distribution of the derrick on the ground is uniform, the situation that local subsidence is caused by long-term operation is reduced, and the stability of the derrick is improved.

Description

Technical Field

[0001] This application relates to the field of resource exploration and development equipment technology, and in particular to a stable derrick. Background Technology

[0002] In the field of resource exploration and development, the derrick serves as the core support and load-bearing device for geothermal drilling operations. Its installation quality directly affects the safety, efficiency, and subsequent work results of drilling operations. During drilling, the derrick must continuously bear the dynamic load generated by the hoisting and lowering of the drill string, the static weight of the drilling pump and other supporting equipment, and also withstand the external forces such as wind in the working environment. Therefore, a reasonable foundation structure design is essential to ensure the smooth transfer of load to the ground and guarantee the structural stability of the derrick during long-term operation.

[0003] Currently, to meet diverse drilling needs, derrick installations must adapt to varying regional foundation conditions. Geothermal wells, due to their resource characteristics, are often located in near-surface strata, where foundations often exhibit complex and diverse properties. Existing derrick foundations mostly utilize traditional concrete pouring or simple steel scaffolding. While concrete foundations offer excellent load-bearing capacity, they have long construction cycles and stringent requirements for site flatness, making them unsuitable for the flexible relocation needs of geothermal drilling. Simple steel foundations, while convenient to install, are easily constrained by foundation characteristics. In some natural sites, the existing foundation structure lacks sufficient contact with the ground, leading to deviations in load transfer paths and uneven pressure distribution on the ground. Long-term operation may cause localized settlement, affecting the derrick's levelness and overall stability. These issues require further solutions. Utility Model Content

[0004] To ensure uniform pressure distribution on the ground from the derrick, reduce localized subsidence caused by long-term operation, and improve the stability of the derrick, this application provides a stable derrick, employing the following technical solution: This application provides a stable derrick, including a derrick body, a load-distributing component, and an adjustment component for adjusting the relative position of the derrick body and the load-distributing component. The derrick body is mounted on the adjustment component, and the adjustment component is mounted on the load-distributing component.

[0005] Preferably, the load-distribution component includes several steel pipe rows, which are fixedly connected to the side of the positioning component away from the main body of the derrick.

[0006] Preferably, the derrick body includes a base and a structural reinforcement frame, the base is installed on the adjustment assembly, and the structural reinforcement frame is fixedly connected to the side of the base away from the adjustment assembly.

[0007] Preferably, the positioning assembly includes a derrick slide and a sliding support, the sliding support is installed on the derrick slide, the side of the derrick slide away from the sliding support is fixedly connected to a steel pipe row, and the base is installed on the side of the sliding support away from the derrick slide.

[0008] Preferably, the steel pipe array is fixedly connected to the side of the derrick slide away from the sliding support, and the steel pipe array is distributed in a matrix.

[0009] Preferably, there are two of each of the derrick slide rails and sliding supports, with each sliding support installed on one of the derrick slide rails. The sliding supports are fixed at intervals on both sides of the base away from the structural reinforcement frame, and the steel pipe rows are arranged at intervals along the length of the derrick slide rails.

[0010] Preferably, the base is provided with a support rod, and the end of the sliding bracket is provided with a limiting plate for limiting the position of the support rod.

[0011] Preferably, the steel pipe bank is provided with an anti-slip layer, which is fixedly connected to the side of the steel pipe bank away from the derrick slide.

[0012] In summary, compared with the prior art, the beneficial effects of the technical solution provided in this application include at least the following: The main body of the derrick in this application is the primary load-bearing structure. More drilling equipment is installed through the derrick body, bearing the weight of the drilling equipment, and to a certain extent bearing or offsetting the vibration, torque and tension brought about during construction. The derrick body is installed in a suitable position on the load-distribution component through the adjustment component. The adjustment component can adjust the relative position of the derrick body and the load-distribution component to a certain extent, so that the derrick body is installed in a suitable position. The load-distribution component, as the side of the stabilizing derrick that is in contact with the ground or soil surface, allows the total weight brought by the stabilizing derrick to be evenly transferred to the foundation to a certain extent, reducing the occurrence of local settlement of the foundation, and to a certain extent, enabling the stabilizing derrick to be placed stably on the ground or soil surface, thereby improving the stability of the derrick. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a stable derrick as described in the embodiments of this application.

[0014] Figure 2 This is a top view of the stable derrick structure described in the embodiments of this application.

[0015] Figure 3 This is an enlarged structural diagram of part A of the stable derrick described in the embodiments of this application.

[0016] Explanation of reference numerals in the attached figures: 1. Main body of the derrick; 11. Base; 111. Support rod; 12. Structural reinforcement frame; 2. Load distribution assembly; 21. Steel pipe row; 211. Anti-slip layer; 3. Adjustment assembly; 31. Derrick slide; 32. Sliding support; 321. Limiting plate. Detailed Implementation

[0017] The following combination Figures 1-3 The present application will be described in further detail below. The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0018] Reference Figure 1 The present application relates to a stable derrick, which includes a derrick body 1, a load-distributing component 2, and an adjusting component 3 for adjusting the relative position of the derrick body 1 and the load-distributing component 2. The derrick body 1 is installed on the adjusting component 3, and the adjusting component 3 is installed on the load-distributing component 2.

[0019] Specifically, in order to meet different drilling needs, improve the stability of the overall structure of the derrick, and further optimize the installation effect of the derrick on the ground, soil surface, foundation, etc., this application provides a stable derrick composed of a derrick body 1, a load-distributing component 2, and an adjustment component 3.

[0020] The structural sequence of the stable derrick in this embodiment, from top to bottom, is as follows: derrick body 1, adjustment assembly 3, and load-distribution assembly 2. The derrick body 1 is the main load-bearing structure, supporting and bearing the weight of drilling equipment. It also absorbs or mitigates vibrations, torques, and tensions generated during construction. The derrick body 1 is installed in a suitable position on the load-distribution assembly 2 via the adjustment assembly 3. The adjustment assembly 3 can adjust the relative positions of the derrick body 1 and the load-distribution assembly 2 to a certain extent, ensuring the derrick body 1 is installed in a suitable position, making the derrick's working position more suitable for drilling operations. The load-distribution assembly 2 serves as the side of the stable derrick that contacts the ground or soil surface. It distributes the total weight of the stable derrick evenly to the foundation, reducing localized foundation settlement and allowing the stable derrick to be placed stably on the ground or soil surface. The stable derrick of this application can make the pressure of the derrick on the ground evenly distributed, reduce the occurrence of local settlement caused by long-term operation, and improve the stability of the derrick.

[0021] Drilling equipment includes common construction components such as drilling rigs, drilling tools, wire ropes, traveling block hooks, and pulley blocks, which are installed on the main body of the derrick according to installation requirements.

[0022] After the position adjustment component 3 is adjusted, it needs to be fixed to ensure that the main body 1 of the derrick above is stable in one position, thereby reducing the occurrence of displacement during construction.

[0023] In one embodiment, the load distribution component 2 includes several steel pipe rows 21, which are fixedly connected to the adjustment component 3 on the side away from the main body 1 of the derrick.

[0024] Reference Figure 2 and Figure 3 Specifically, in this embodiment of the application, the load-distributing component 2 consists of several steel pipe rows 21 spaced apart and installed on the positioning component 3. Each steel pipe row 21 is composed of several steel pipes laid flat and fixedly connected together. The steel pipes are fixedly connected to each other through an externally fitted and fixed structure, which enables the stable derrick to cope with more silty and soft soil surfaces, makes the bottom of the derrick more stable and in contact with the ground, and thus makes the ground stress uniform.

[0025] In one embodiment, the steel pipes are circular steel pipes, each with a through hole. Bolts are passed through the through holes to be connected, and nuts are used to secure them together, forming a steel pipe row 21. The bolts pass through the steel pipe row 21 in a row-to-row direction, ensuring a stable connection between the steel pipes.

[0026] In another embodiment, the steel pipe is a circular steel pipe, which is fixed by an external "U"-shaped fastener, such as a U-bolt matching the diameter of the steel pipe, to fix the parallel steel pipes.

[0027] In one embodiment, the steel pipe row 21 consists of several layers, such as two layers. Each layer of the steel pipe row 21 has four steel pipes arranged and fixedly connected. The two layers of steel pipe row 21 are fixedly connected. The thickened steel pipe row 21 enables the stable derrick to adapt to more silty or soft ground.

[0028] In one embodiment, the steel pipe row 21 can be fitted with additional anchoring structures for a more stable installation on the ground. These could include bolts fixed to the ground.

[0029] In one embodiment, the derrick body 1 includes a base 11 and a structural reinforcement frame 12. The base 11 is installed on the adjustment assembly 3, and the structural reinforcement frame 12 is fixedly connected to the side of the base 11 away from the adjustment assembly 3.

[0030] Specifically, in this embodiment, the derrick body 1 consists of a base 11 and a structural reinforcement frame 12. The base 11 and the structural reinforcement frame 12 are used to install the required drilling equipment. After the stable derrick is installed on the ground, the structural reinforcement frame 12 and the base 11 are arranged sequentially from the top to the ground. The base 11 is specifically used to realize the main load-bearing and connection of the adjustment component 3.

[0031] In one embodiment, the positioning component 3 includes a derrick slide 31 and a sliding support 32. The sliding support 32 is installed on the derrick slide 31. The side of the derrick slide 31 away from the sliding support 32 is fixedly connected to the steel pipe row 21. The base 11 is installed on the side of the sliding support 32 away from the derrick slide 31.

[0032] Specifically, this application uses the adjustment component 3 to connect the base 11 at a higher position and the load-distributing component 2 at a lower position. The adjustment component 3 has two working states: before and after fixing. The derrick slide 31 serves as the bottom of the adjustment component 3. The bottom of the derrick slide 31 is used to install the steel pipe row 21 and to contact the ground to a certain extent, cooperating with the steel pipe row 21 to contact the ground. A sliding bracket 32 ​​is installed above the derrick slide 31. The sliding bracket 32 ​​is first installed on the derrick slide 31 by sliding connection, and the base 11 is then installed on the sliding bracket 32, so that the final position of the derrick body 1 can be adjusted along the sliding direction before fixing.

[0033] In one embodiment, both the derrick slide 31 and the sliding support 32 have limiting holes. After confirming the position, the sliding support 32 is adjusted to align with the limiting holes of the derrick slide 31. The position is then limited by external limiting components, such as bolts and nuts, in conjunction with the limiting holes. Finally, the structural reinforcement frame 12 above the base 11 is installed, followed by the installation of the necessary equipment and components.

[0034] In another embodiment, the derrick slide 31 and the sliding bracket 32 ​​are fixed by welding after the position is confirmed.

[0035] In one embodiment, the base 11 is provided with a support rod 111, and the end of the sliding bracket 32 ​​is provided with a limiting plate 321 for limiting the position of the support rod 111.

[0036] Specifically, in this embodiment, the base 11 is provided with a support rod 111, i.e. a support foot. The support foot is aligned with the limiting hole provided on the sliding bracket 32. With any fixed connection method, the base 11 is installed on the sliding bracket 32.

[0037] In this embodiment, the limiting plate 321 is fixedly or integrally connected to one end of the sliding bracket 32, and at least one is provided; this embodiment uses two. Specifically, the limiting plate 321 is an "L"-shaped plate, which allows the support rod 111 to be placed more quickly and conveniently in the appropriate position on the sliding bracket 32 ​​when the base 11 needs to be installed on it, thereby improving installation efficiency. Furthermore, during construction, the limiting plate 321 can provide lateral support to the support rod 111 to a certain extent, making the base 11 more stable.

[0038] In one embodiment, the steel pipe row 21 is fixedly connected to the side of the derrick slide 31 away from the sliding support 32, and the steel pipe row 21 is distributed in a matrix.

[0039] Specifically, the steel pipe rows 21 are arranged in a grid matrix along the width (lateral) and length (longitudinal) directions of the derrick. The lateral rows are evenly arranged with 4-6 blocks on each side, and the longitudinal rows are arranged at a spacing that matches the length of the derrick slide 31. The individual steel pipe rows 21 are parallel and attached to each other, forming a complete load-bearing matrix covering the area below the derrick base 11, similar to a multi-column and multi-row grid structure.

[0040] The matrix distribution significantly increases the contact area between the steel pipe rows 21 and silty ground, transforming the concentrated loads of the derrick, drilling rig, and drilling tools into uniformly distributed surface loads. This reduces the risk of localized stress concentration leading to collapse or settlement of the silty ground. Furthermore, the matrix arrangement allows each steel pipe row 21 to form an integrated load-bearing system through horizontal angle steel, U-bolts, and other fasteners, enhancing the deformation resistance of the foundation structure and providing a flat and stable installation reference for the derrick slide rail 31 and base 11. Precise alignment with the installation position of the derrick slide rail 31 ensures uniform stress on the connecting lugs between the slide rail and the steel pipe rows 21. Combined with the anchoring structure, this further enhances the overall anti-overturning and anti-vibration capabilities of the derrick, adapting to the load-bearing characteristics of silty ground.

[0041] There are two derrick slides 31 and two sliding supports 32. Each sliding support 32 is installed on one of the derrick slides 31. The sliding supports 32 are fixed at intervals on both sides of the base 11 away from the structural reinforcement frame 12. The steel pipe rows 21 are arranged at intervals along the length of the derrick slide 31.

[0042] Specifically, this embodiment of the application is designed for a derrick foundation layout area of ​​10m*12m. 126 evenly distributed points are used for light dynamic penetration testing of the foundation bearing capacity. The probe points are spaced 1 meter apart, the hammer weight is 10kg, the free fall distance is 80cm, and the probe diameter is 40mm. The foundation bearing capacity is (0.8×N-2)×9.8, with a minimum value of [0.8×(32+38+45) / 3-2]×9.8=281Kpa. At this point, the derrick's self-weight is 36000kg, and the maximum hook load of the drilling rig is 1700KN. Assuming that both the derrick slide rail 31 and the sliding support 32 are provided in pairs, the contact area between the derrick foundation and the ground is calculated based on two scenarios.

[0043] In one implementation, 0.6m × 4m × 6 × 2 = 28.8m², meaning the foundation dimensions for the 21 steel pipe rows are 0.6m wide and 4.0m long, calculated based on 6 rows per side. The foundation load calculated based on 6 pipe rows per side is (36000kg × 9.8 / 1000 + 1700KN) / (28.8) = 71.28KPa < 281KPa.

[0044] In another implementation, 0.6m×4m×4×2=19.2m2, that is, the foundation dimensions of the steel pipe row 21 are 0.6m wide and 4.0m long, calculated based on 4 rows on each side. The foundation load calculated based on 4 rows on each side is (36000kg×9.8 / 1000+1700KN) / (19.2)=106.92KPa<281Kpa.

[0045] The calculation results show that the bearing capacity of the foundation in the area where the derrick is located meets the bearing requirements.

[0046] In one embodiment, the steel pipe bar 21 is provided with an anti-slip layer 211, which is fixedly connected to the side of the steel pipe bar 21 away from the derrick slide 31.

[0047] Specifically, in this embodiment, the anti-slip layer 211 is made of wear-resistant rubber pads or anti-slip patterned steel plates with a thickness of 8-12mm. It is cut and shaped according to the bottom contour of the steel pipe row 21 and fixed by bolt penetration or high-strength adhesive, fully adhering to the bottom of the steel pipe row 21 away from the derrick slide 31. The anti-slip layer 211 is in direct contact with the silty ground. Through its textured or serrated structure, it increases the coefficient of friction with the ground, effectively suppressing the lateral or longitudinal slippage of the steel pipe row 21 caused by external forces such as drilling operation vibration and wind, and adapting to the weak friction of the silty ground.

[0048] In one embodiment, the surface of the rubber pad is provided with a diamond-shaped anti-slip texture, and the surface of the patterned steel plate is pressed with raised anti-slip teeth, so that the anti-slip layer 211 is firmly connected to the steel pipe row 21, reducing the risk of falling off.

[0049] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A stable derrick, characterized in that, It includes a derrick body (1), a load-distributing component (2), and an adjustment component (3) for adjusting the relative position of the derrick body (1) and the load-distributing component (2). The derrick body (1) is installed on the adjustment component (3), and the adjustment component (3) is installed on the load-distributing component (2).

2. The stable derrick according to claim 1, characterized in that, The load distribution component (2) includes several steel pipe rows (21), which are fixedly connected to the side of the positioning component (3) away from the main body of the derrick (1).

3. The stable derrick according to claim 2, characterized in that, The main body (1) of the derrick includes a base (11) and a structural reinforcement frame (12). The base (11) is installed on the adjustment assembly (3), and the structural reinforcement frame (12) is fixedly connected to the side of the base (11) away from the adjustment assembly (3).

4. The stable derrick according to claim 3, characterized in that, The adjustment assembly (3) includes a derrick slide (31) and a sliding support (32). The sliding support (32) is installed on the derrick slide (31). The side of the derrick slide (31) away from the sliding support (32) is fixedly connected to the steel pipe row (21). The base (11) is installed on the side of the sliding support (32) away from the derrick slide (31).

5. The stable derrick according to claim 4, characterized in that, The steel pipe row (21) is fixedly connected to the side of the derrick slide (31) away from the sliding support (32), and the steel pipe row (21) is distributed in a matrix.

6. The stable derrick according to claim 4, characterized in that, Two of each of the derrick slide rails (31) and sliding supports (32) are provided. Each of the sliding supports (32) is installed on one of the derrick slide rails (31). The sliding supports (32) are fixed at intervals on both sides of the base (11) away from the structural reinforcement frame (12). The steel pipe rows (21) are arranged at intervals along the length of the derrick slide rails (31).

7. The stable derrick according to claim 4, characterized in that, The base (11) is provided with a support rod (111), and the end of the sliding bracket (32) is provided with a limiting plate (321) for limiting the position of the support rod (111).

8. The stable derrick according to claim 4, characterized in that, The steel pipe bank (21) is provided with an anti-slip layer (211), which is fixedly connected to the side of the steel pipe bank (21) away from the derrick slide (31).

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