Products Description LEANOMS
The Odex Drilling System is a drilling technique used in the construction of deep foundation piles, particularly in challenging ground conditions. It is commonly employed in situations where conventional drilling methods, such as the use of a temporary casing or drilling fluid, are impractical or ineffective.
Products Advantage LEANOMS
The Odex Drilling System consists of a steel casing pipe that is driven into the ground using a hydraulic hammer or oscillator. The casing pipe is equipped with an eccentric drill bit at its base, which is designed to cut through difficult formations such as rock or hard soil. The eccentricity of the drill bit helps to maintain stability during drilling and prevents the casing from getting stuck.
The drilling process begins by driving the casing pipe into the ground. As the casing advances, the eccentric drill bit creates a borehole slightly larger than the casing diameter. The drilling action displaces the soil or rock cuttings inside the casing, allowing it to be extracted at the surface.
Once the desired depth is reached, the casing is typically filled with concrete or grout to reinforce the pile and provide structural stability. The casing can then be left in place or removed, depending on the specific project requirements.
The Odex Drilling System offers several advantages. It allows for the installation of piles in challenging ground conditions, such as hard rock or dense soil, where other drilling methods may encounter difficulties. The system also provides increased control over borehole stability, reducing the risk of collapse or deviation during drilling.
Furthermore, the Odex Drilling System is a versatile technique that can be used for various types of deep foundation construction, including drilled shafts, auger-cast piles, and secant pile walls. Its adaptability makes it suitable for a wide range of construction projects, such as bridges, high-rise buildings, and infrastructure development.
It's important to note that while the Odex Drilling System has been used in many projects, it's always recommended to consult with a qualified engineer or geotechnical specialist to determine the most appropriate foundation construction method for a specific project based on the site conditions and requirements.
The Odex Drilling System is a specialized tool used in drilling operations to control the deviation of the wellbore and maintain the verticality of the well. It is commonly used in challenging drilling environments such as unstable formations or when drilling through highly deviated sections. Here are the general steps to use an Odex Drilling System:
Work Steps LEANOMS
The Odex Drilling System is a specialized tool used in drilling operations to control the deviation of the wellbore and maintain the verticality of the well. It is commonly used in challenging drilling environments such as unstable formations or when drilling through highly deviated sections. Here are the general steps to use an Odex Drilling System:
Prepare the equipment: Ensure that you have the necessary tools and equipment for the operation, including the eccentric casing, drill pipe, drill bit, drilling mud, and supporting rig equipment.
Plan the operation: Evaluate the drilling conditions and wellbore trajectory to determine the appropriate use of the eccentric casing system. This involves assessing the geological formations, pore pressure, wellbore stability, and other factors that may affect drilling performance.
Install the eccentric casing: Lower the eccentric casing into the wellbore, usually by attaching it to the drill pipe. The eccentric casing is designed with an offset or an eccentricity, meaning it is not centered within the drill pipe. This eccentricity helps to control the deviation of the wellbore.
Connect the drilling assembly: Connect the drill bit and other drilling tools to the bottom end of the eccentric casing. Ensure that all connections are secure and properly torqued.
Start drilling: Begin rotating the drill string and apply downward force to the drill bit. The eccentric casing helps to guide the drill bit and maintain the desired trajectory by offsetting the center of rotation.
Monitor the drilling process: Continuously monitor drilling parameters such as weight on bit, rotary speed, drilling mud properties, and formation responses. Adjust the drilling parameters as necessary to optimize drilling performance and maintain wellbore stability.
Withdraw the Odex Drilling System: Once the desired depth or target has been reached, the eccentric casing can be retrieved by pulling it out of the wellbore along with the drill string.
Continue drilling operations: If required, continue drilling operations using conventional drilling techniques or transition to other drilling tools or systems as per the drilling plan.
Specification LEANOMS
| Recommended model | Outer Dia.(A)mm | Inner Dia.(B)mm | The Max. Wall Thickness |
Reamed Dia. (C)mm |
Inner Dia.Of Casing Shoe(D)mm |
Inner Dia. Of Casing Shoe That Pilot Bit Can Pass Through |
Type Of Hammer Recommended |
Hammer Type(E) | Drill Pipe |
| Order Guide:Outer Dia(A)+Inner Dia(B)+Reamed Dia(C)+Inner Dia. Of Casing Shoe(D)+Hammer Type(E) | |||||||||
| LEC108-DHD3.5-84 | 108 | 96 | 6 | 118 | 86 | 84 | DHD3.5 | DHD3.5/QL30 | 76 |
| LEC114-DHD3.5-90 | 114 | 102 | 6 | 123 | 92 | 90 | DHD3.5 | DHD3.5/QL30 | 76 |
| LEC127-DHD340-97 | 127 | 109 | 9 | 138 | 99 | 97 | DHD340 | DHD340A/COP44/QL40 | 76 |
| LEC140-DHD340-115 | 140 | 128 | 6 | 152 | 117 | 115 | DHD340 | DHD340A/COP44/QL40 | 76 |
| LEC168-DHD350-140 | 168 | 156 | 6 | 185 | 142 | 140 | DHD350 | DHD350R/COP54/QL50 | 76/89 |
| LEC178-DHD350-146 | 178 | 158 | 10 | 195 | 148 | 146 | DHD350 | DHD350R/COP54/QL50 | 76/89 |
| LEC183-DHD350-150 | 183 | 163 | 10 | 200 | 152 | 150 | DHD350 | DHD350R/COP54/QL50 | 76/89 |
| LEC194-DHD360-165 | 194 | 180 | 7 | 209 | 167 | 165 | DHD360 | DHD360/COP64/QL60 | 89/114 |
| LEC219-DHD360-190 | 219 | 205 | 7 | 237 | 192 | 190 | DHD360 | DHD360/COP64/QL60 | 89/114 |
| LEC245-DHD380-208 | 245 | 225 | 10 | 264 | 210 | 208 | DHD380 | DHD380/CO84/QL80 | 114 |
| LEC273-DHD380-240 | 273 | 259 | 7 | 308 | 242 | 240 | DHD380 | DHD380/COP84/QL80 | 114 |
| LEC325-Numa100-280 | 323 | 303 | 10 | 358 | 282 | 275 | Numa100 | Numa100/SD10 | 114 |
