Products Description LEANOMS
Casing advancement systems, or drilled casings, are today’s preferred method for drilling in difficult ground conditions, for example, where there are boulders or loose formations.
What is a Casing Advancement System?
The Casing Advancement System is a drilling method in that casing and drilling occur at the same time. Installing the casing when you are drilling minimizes the hole collapsing risk and enables contractors to perform their work faster and with higher quality. The system adds value whether the mission is to install a foundation, support elements or simply case the hole in collapsing formation.
Where do we use Casing Advancement System?
As much as 90% of the land surface of the earth is covered with loose, unconsolidated material. When drilling in so-called overburden, the conditions are often challenging with the risk of collapsing walls, hole deviations and failure to reach design depth or bedrock.
How to select a Casing Advancement System?
Selecting the right system depends on several factors including the ground conditions and application. This catalog will guide you to select the most suitable product for different application scenarios.
Specification LEANOMS
Symmetrix is a patented system comprised of an ingeniously simple concentric method of drilling through the Overburden Casing System. Symmetrix drills straight holes, in any type of ground conditions, at any angle and to depths beyond 100 meters.
Drilling in Overburden Casing System
Casing Systems are installed into the overburden basically for two different reasons:
1. To create a conduit through the overburden for example;
■ gas, oil, water and geothermal wells
■ utility lines
■ starter casings for exploration
■ grouting casings
2. To create foundation and support structures such as;
■ piles
■ forepoling, pipe roofs
■ ground stabilization
■ anchors
The Overburden Casing System range includes systems for drilling both permanent and retrievable casings. In the case of the permanent casing, the ring bit is sacrificed and left in the bottom of the hole, while drilling retrievable casings all system components are retrieved for re-use.
