Base layer structure of pre-drilling engineering containing water-based rock debris
By designing a base structure that incorporates water-based rock cuttings, the problems of resource utilization of water-based rock cuttings and treatment of drilling wastewater were solved, enabling large-scale resource utilization, enhancing the stability and durability of the base structure, reducing the amount of earthwork excavation during construction, and achieving good social and economic benefits.
Patent Information
- Application Number
- CN202423048698.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing technologies offer limited pathways for the resource utilization of water-based rock cuttings, hindering large-scale utilization. Furthermore, drilling wastewater treatment is challenging, leading to environmental impact and resource waste.
The base structure, which incorporates water-based rock chips, includes a gravel layer, roadbed body, cement or concrete layer, impermeable geotextile, and drainage system. It is designed in an inverted trapezoidal or stepped shape, combined with a multi-layer structure and drainage blind ditch. Water-based rock chips are used to replace traditional building materials, thereby enhancing structural stability and drainage performance.
It enables large-scale resource utilization of water-based rock cuttings, saves mineral resources, improves the durability and stability of the base structure, reduces the amount of earthwork excavation during construction, reduces environmental pollution, and has good social and economic benefits.
Smart Images
Figure CN223496944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the fields of geotechnical engineering and petroleum pre-drilling engineering, and in particular to a base structure for pre-drilling engineering that includes water-based rock cuttings. Background Technology
[0002] The extraction of oil and gas resources also generates a large amount of waste that is difficult to treat effectively, including drilling wastewater, fracturing flowback wastewater, gas production wastewater, water-based rock cuttings and waste mud, and oily sludge. Among these, drilling water-based rock cuttings are classified as general industrial solid waste, mainly consisting of water-based rock cuttings separated by vibrating screens during drilling and attached drilling mud. Furthermore, the quantity of these water-based rock cuttings is substantial; in the Sichuan-Chongqing region alone, approximately 400,000 cubic meters of water-based rock cuttings are generated annually. 3 Its solid phase consists of approximately 80% fine rock particles.
[0003] Currently, the main method for resource utilization of water-based rock fragments is through the preparation of sintered bricks. This approach is relatively simple and the consumption of water-based rock fragments is extremely limited, making it impossible to achieve large-scale resource utilization of water-based rock fragments. Summary of the Invention
[0004] To address the aforementioned technical problems, this utility model proposes a base structure for pre-drilling engineering that includes water-based rock cuttings, enabling large-scale resource utilization of water-based rock cuttings.
[0005] This utility model is achieved by adopting the following technical solution:
[0006] A base structure for pre-drilling engineering containing water-based rock cuttings includes a gravel layer, a roadbed body disposed below the gravel layer, and a first water-based rock cuttings layer disposed on both sides of the roadbed body; the roadbed body comprises, from top to bottom, a cohesive soil layer, a second water-based rock cuttings layer, a solidification layer, and a stable base layer; the solidification layer is a cement layer or a concrete layer; the stable base layer includes a third water-based rock cuttings layer and a native soil layer disposed at intervals.
[0007] An impermeable geotextile is also installed between the first water-based rock debris layer and the roadbed body.
[0008] An impermeable geotextile is also placed between the cohesive soil layer and the gravel layer.
[0009] An impermeable geotextile is also provided between the solidified layer and the stable base layer.
[0010] The roadbed is generally in the shape of an inverted trapezoid.
[0011] The roadbed structure is generally stepped, with the dimensions of each layer increasing sequentially in the width direction from top to bottom.
[0012] The stabilized base layer in the roadbed has the same dimensions in the width direction; the dimensions of the cohesive soil layer, the second water-based rock debris layer, and the solidified layer decrease sequentially in the width direction; the mating surfaces of the ends of the cohesive soil layer, the second water-based rock debris layer, and the solidified layer with the first water-based rock debris layer are inclined surfaces.
[0013] The number of the third water-bed rock debris layer and the original soil layer is several.
[0014] It also includes connected drainage blind ditches and drainage pipes, wherein the drainage blind ditches are located within the first water-based rock debris layer and are positioned above the stable base layer.
[0015] The sum of the thicknesses of the gravel layer and the cohesive soil layer is 80 mm to 100 mm, the sum of the thicknesses of the second water-based rock debris layer and the solidified layer is 200 mm to 300 mm, and the thickness of the stabilized base layer is 300 to 400 mm.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. The base structure in this utility model can solve the problem of treating a large amount of drilling water-based rock cuttings solid waste. Compared with other traditional treatment methods, the consumption of rock cuttings is large. It realizes the recycling of drilling water-based rock cuttings in oil and gas blocks, and can also use some of the original soil to replace local building materials such as sand, gravel, rubble, strip stone, and crushed stone required for pre-drilling engineering. It saves mineral resources, is low-carbon and environmentally friendly, and has good social and economic benefits.
[0018] Furthermore, through this structural design, the aforementioned base structure has good durability; each layer has high unconfined compressive strength, a tiered distribution of stiffness, and reasonable structural mechanical properties, which can quickly diffuse surface loads, improve bearing capacity, and solve the problem of large pre-drilling engineering loads.
[0019] 2. In this utility model, the use of impermeable geotextile can ensure the strength and stability of each structure in the base layer, especially in preventing settlement and sliding, reducing the problem of uneven settlement of the base layer structure, and also alleviating the technical difficulties of rainwater soaking and erosion to a certain extent.
[0020] 3. The overall shape of the roadbed is an inverted trapezoid, which reduces the impact of water on the bottom original soil layer. It also reduces the amount of earthwork excavation during construction and can adapt to some special foundation conditions. The stepped shape of the roadbed facilitates construction and improves the stability of the base structure to a certain extent, distributing the pressure on the roadbed. The stable base layer in the roadbed has the same dimensions in the width direction, which helps to provide uniform and stable support, ensuring the overall structural stability of the roadbed. The dimensional design of the cohesive soil layer, the second water-based rock debris layer, and the solidification layer allows for better material allocation based on the actual conditions, according to the function and stress characteristics of each layer, avoiding unnecessary waste. The sloping mating surfaces also improve the interlayer bonding force and overall stability. Especially when the roadbed is subjected to lateral forces, the sloping design helps to enhance the anti-slip capacity between layers.
[0021] Therefore, the specific type of base structure can be reasonably selected according to the usage scenario. However, regardless of the type of structure, a large amount of water-based rock chips are required, and the corresponding strength and stability must be guaranteed.
[0022] 4. The installation of drainage blind ditches and drainage pipes improves the drainage design, removes excess water, and protects the base structure from damage due to seepage deformation.
[0023] 5. By limiting the thickness of each layer, this utility model ensures the stability of the base structure of drilling projects containing water-based rock cuttings. Attached Figure Description
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, wherein:
[0025] Figure 1 This is a schematic diagram of one possible structure of the present utility model;
[0026] Figure 2 This is another structural schematic diagram of the present invention;
[0027] Figure 3 This is another structural schematic diagram of the present utility model;
[0028] Figure 4 This is another structural schematic diagram of the present utility model;
[0029] Marked in the image:
[0030] 1. Crushed stone layer, 2. First water-based rock debris layer, 3. Cohesive soil layer, 4. Second water-based rock debris layer, 5. Solidified layer, 6. Third water-based rock debris layer, 7. Original soil layer, 8. Impermeable geotextile, 9. Drainage blind ditch. Detailed Implementation
[0031] Example 1
[0032] As a basic embodiment of this utility model, please refer to the appendix to the specification. Figure 1 This utility model includes a base structure for pre-drilling engineering containing water-based rock cuttings, comprising a crushed stone layer 1, a roadbed body disposed below the crushed stone layer 1, and a first water-based rock cutting layer 2 disposed on both sides of the roadbed body. The roadbed body, from top to bottom, comprises a cohesive soil layer 3, a second water-based rock cutting layer 4, a solidification layer 5, and a stabilized base layer. The solidification layer 5 is a cement layer or a concrete layer. The stabilized base layer comprises a third water-based rock cutting layer 6 and a native soil layer 7 disposed at intervals.
[0033] Example 2
[0034] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 2 This utility model includes a base structure for pre-drilling engineering containing water-based rock cuttings, comprising a crushed stone layer 1, a roadbed body disposed below the crushed stone layer 1, and a first water-based rock cutting layer 2 disposed on both sides of the roadbed body. An impermeable geotextile 8 is also provided between the first water-based rock cutting layer 2 and the roadbed body.
[0035] The roadbed is generally in the shape of an inverted trapezoid. From top to bottom, the roadbed consists of a cohesive soil layer 3, a second water-based rock debris layer 4, a solidified layer 5, and a stabilized base layer. The solidified layer 5 is a cement layer. The stabilized base layer consists of two third water-based rock debris layers 6 and one original soil layer 7, with the third water-based rock debris layer 6 and the original soil layer 7 spaced apart.
[0036] Example 3
[0037] As another preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 3 This utility model includes a base structure for pre-drilling engineering containing water-based rock cuttings, comprising a crushed stone layer 1, a roadbed body disposed below the crushed stone layer 1, and a first water-based rock cutting layer 2 disposed on both sides of the roadbed body. An impermeable geotextile 8 is also provided between the first water-based rock cutting layer 2 and the roadbed body.
[0038] The roadbed structure is generally stepped, with each layer increasing in width from top to bottom. The roadbed structure, from top to bottom, includes a cohesive soil layer 3, a second water-based rock debris layer 4, a solidified layer 5, and a stabilized base layer. The solidified layer 5 is a concrete layer. The stabilized base layer includes two third water-based rock debris layers 6 and two original soil layers 7, with the third water-based rock debris layers 6 and the original soil layers 7 spaced apart. An impermeable geotextile 8 is also installed between the solidified layer 5 and the stabilized base layer.
[0039] Example 4
[0040] As another preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 4This utility model includes a base structure for pre-drilling engineering containing water-based rock cuttings, comprising a crushed stone layer 1, a roadbed body disposed below the crushed stone layer 1, and a first water-based rock cutting layer 2 disposed on both sides of the roadbed body. The roadbed body, from top to bottom, comprises a cohesive soil layer 3, a second water-based rock cutting layer 4, a solidification layer 5, and a stabilized base layer. The solidification layer 5 is a cement layer or a concrete layer. The stabilized base layer comprises three third water-based rock cutting layers 6 and two original soil layers 7, with the third water-based rock cutting layers 6 and the original soil layers 7 spaced apart.
[0041] Among them, impermeable geotextile 8 is also provided between the first water-based rock debris layer 2 and the roadbed body, between the cohesive soil layer 3 and the crushed stone layer 1, and between the solidified layer 5 and the stable base layer.
[0042] Furthermore, the stabilized base layer in the roadbed has the same dimensions in the width direction. From top to bottom, the dimensions of the cohesive soil layer 3, the second water-based rock debris layer 4, and the solidified layer 5 decrease sequentially in the width direction; the mating surfaces of the ends of the cohesive soil layer 3, the second water-based rock debris layer 4, and the solidified layer 5 with the first water-based rock debris layer 2 are inclined surfaces.
[0043] Furthermore, a drainage ditch 9 is also provided within the first water-based rock debris layer 2, and the drainage ditch 9 is positioned higher than the stable base layer. The drainage ditch 9 is connected to a drainage pipe for draining water outwards.
[0044] More specifically, the sum of the thicknesses of the crushed stone layer 1 and the cohesive soil layer 3 is 80 mm to 100 mm, the sum of the thicknesses of the second water-based rock debris layer 4 and the solidified layer 5 is 200 mm to 300 mm, and the thickness of the stabilized base layer is 300 to 400 mm.
[0045] In summary, any other corresponding modifications made by those skilled in the art based on the technical solution and concept of this utility model without creative mental effort after reading this utility model document are all within the scope of protection of this utility model.
Claims
1. A base structure for pre-drilling engineering containing water-based rock cuttings, characterized in that: It includes a crushed stone layer (1), a roadbed body set below the crushed stone layer (1), and a first water-based rock debris layer (2) set on both sides of the roadbed body; the roadbed body includes, from top to bottom, a cohesive soil layer (3), a second water-based rock debris layer (4), a solidification layer (5), and a stable base layer; the solidification layer (5) is a cement layer or a concrete layer; the stable base layer includes a third water-based rock debris layer (6) and a native soil layer (7) set at intervals.
2. The base structure for pre-drilling engineering containing water-based rock cuttings according to claim 1, characterized in that: An impermeable geotextile (8) is also provided between the first water-based rock debris layer (2) and the roadbed body.
3. The base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2, characterized in that: An impermeable geotextile (8) is also provided between the cohesive soil layer (3) and the gravel layer (1).
4. The base structure for pre-drilling engineering containing water-based rock cuttings according to claim 3, characterized in that: An impermeable geotextile (8) is also provided between the solidified layer (5) and the stable base layer.
5. A base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2 or 4, characterized in that: The roadbed is generally in the shape of an inverted trapezoid.
6. The base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2 or 4, characterized in that: The roadbed structure is generally stepped, with the dimensions of each layer increasing sequentially in the width direction from top to bottom.
7. A base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2 or 4, characterized in that: The stable base layer in the roadbed has the same dimensions in the width direction; the dimensions of the cohesive soil layer (3), the second water-based rock debris layer (4) and the solidified layer (5) decrease sequentially in the width direction; the mating surfaces of the ends of the cohesive soil layer (3), the second water-based rock debris layer (4) and the solidified layer (5) with the first water-based rock debris layer (2) are inclined surfaces.
8. A base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2 or 4, characterized in that: The number of the third water-based rock debris layer (6) and the original soil layer (7) is several.
9. The base structure for pre-drilling engineering containing water-based rock cuttings according to claim 7, characterized in that: It also includes connected drainage blind ditch (9) and drainage pipe, wherein the drainage blind ditch (9) is located within the first water-based rock debris layer (2) and the location of the drainage blind ditch (9) is higher than the stable base layer.
10. A base structure for pre-drilling engineering containing water-based rock cuttings according to claim 2 or 4, characterized in that: The sum of the thicknesses of the gravel layer (1) and the cohesive soil layer (3) is 80 mm to 100 mm, the sum of the thicknesses of the second water-based rock debris layer (4) and the solidified layer (5) is 200 mm to 300 mm, and the thickness of the stabilized base layer is 300 to 400 mm.