How To Select Drilling Tools Based on The Geological Conditions of Rotary Drilling Rig Construction

In the operation of rotary drilling RIGS, the selection of drilling tools is of vital importance, directly affecting the construction efficiency and quality. Different geological conditions correspond to different suitable drilling tools. Next, I'll talk to you about how to precisely select drilling tools based on geological conditions.

1. Clay and silty clay strata: These strata have high viscosity and are suitable for short spiral drill bits. They can quickly break the soil and carry the soil debris out of the hole, reducing clay adhesion and improving drilling efficiency.

2. Sand layer and gravel layer: Due to the loose particles that are prone to collapse, a double-bottom sand hopper is a good choice. It can effectively grasp and carry sand and gravel, ensuring the stability of hole formation.

3. Pebble formation: The particle size of pebbles varies. By using a rock-embedded cylinder drill, the cutting and grasping functions of the cylinder wall can be utilized to remove the pebbles from the hole, achieving efficient drilling.

4. Rock strata: For soft rock, the rotary bucket in combination with the cutting teeth can effectively break the rock. For hard rock, a cone drill is needed. With its sharp cone, it forcibly breaks the hard rock strata.

5. Backfill soil layer: Due to its complex composition, a short spiral drill bit is preferred for initial crushing, followed by cleaning with a sand hopper. This can effectively deal with the uncertainty of the backfill.

6. Silt texture layer: Silt is soft and highly fluid. A combination of drill tubes and valves can be used to prevent silt from flowing back and ensure the shape of the hole.

In conclusion, choosing the right drilling tools based on the geological conditions of the rotary drilling rig operation is like equipping the construction with appropriate "weapons". Only by fully understanding the geological characteristics and reasonably matching the drilling tools can the rotary drilling rig achieve the maximum efficiency and ensure the smooth progress of the construction.