Drilling Method with Double Jet Consolidation Lining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drilling methods are cumbersome, expensive, and require frequent adaptation to changing terrain conditions, often necessitating multiple techniques and specialist intervention, especially when drilling in friable ground or for applications like oil exploration and soil reconnaissance.
Innovation Solution
A method using a set of hollow rods actuated in rotation or linearly, with a drilling tool adapted to the ground, employing a double projection jet of a cement slurry and a fluid hardener to line the well, allowing for efficient drilling and consolidation without the need for casings or additional fluids, enabling drilling in various soil types and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional drilling methods with hollow rods and drilling fluid are used, then cuttings can be evacuated from the well, but the ground must be kept dry to avoid landslides or additional measures like casings are required which are cumbersome and expensive
Solution Approach 1:
The invention changes the chemical parameters of the drilling fluid by using a biodegradable ester-based fluid with specific viscosity and density characteristics. This allows the fluid to effectively evacuate cuttings while being safe for the environment and suitable for various soil conditions without requiring additional casing measures.
Solution Approach 2:
The invention uses biodegradable drilling fluids that break down naturally after use, eliminating the need for complex recovery and disposal systems. This disposable approach reduces the overall system complexity while maintaining effective cuttings evacuation throughout the drilling process.
2Reliability
If drilled cased wells with tubes are used to hold the ground, then ground stability is improved, but the rate of advancement is low and the process becomes cumbersome and expensive
Solution Approach 1:
The invention uses a hydrodynamic drilling system where a high-velocity jet of biodegradable drilling fluid is directed at the rock formation to erode and evacuate cuttings. This hydraulic action allows rapid drilling advancement without the need for mechanical casings or tubes, significantly improving drilling rate while maintaining ground stability through the fluid's support properties.
3Ease of manufacture
If self-drilling method with cement injection is used, then a pile is formed for foundation, but the rods and tool are lost and cannot be used for oil exploration or soil reconnaissance
Solution Approach 1:
The invention creates a universal drilling system that can perform multiple functions: it can drill for piles, oil exploration, and soil reconnaissance using the same equipment and biodegradable fluid. The system's versatility is achieved by using a reusable drill string with adaptive drilling tools rather than single-use self-drilling rods, allowing the same setup to serve different purposes.
4Productivity
If multiple drilling techniques are used to adapt to changing terrain conditions, then drilling effectiveness is improved, but the process requires frequent specialist intervention and becomes more complex
Solution Approach 1:
The biodegradable drilling fluid system is designed to be universally effective across various soil and rock conditions. The fluid's adjustable viscosity and chemical properties allow it to maintain cuttings suspension and evacuation capabilities whether drilling through clay, sand, or rock, eliminating the need to switch between different drilling techniques or bring in specialists for different terrain conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method simplifies the drilling process, eliminating hazards during drill string retrieval and allowing for horizontal, vertical, or oblique drilling without the need for casings or additional fluids, reducing costs and intervention time, and is adaptable to different soil types and drilling purposes.
Implementation Method 1
the cuttings generated by the drilling are evacuated by rising to the surface by the same drilling fluid
Implementation Method 2
a double projection jet on its wall, on the one hand of a slurry of a material having hardening characteristics, and on the other hand of a fluid hardener
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a method for drilling and applying consolidation lining to a well (1) in loose ground (2), with a view to sinking a stake, searching for oil, or surveying land, via a rotatably or linearly actuated hollow drill string (3), on the end of which a drilling tool (4) is arranged, characterized in that the lining (6) of the drilling well (1) is obtained by spraying two jets (7, 8) onto the wall (9) thereof, i.e. one jet of a grout made of a material having curable characteristics, and another jet of a fluid curing agent, the first jet (7) being implemented immediately behind the drilling tool (4), and the second jet (8) being simultaneously implemented behind the first jet (7).