Precautions in use of horizontal directional drilling

Precautions in use of horizontal directional drilling

Horizontal directional drilling does not dig the ground surface, and lays other underground utilities, such as a crossing construction technology such as pipes and cables. It is often used in the development of natural resources or power installation. So, how to avoid some problems that occur during the construction of horizontal directional drilling?

First, when using horizontal directional drilling, it is necessary to select the appropriate drill bit and underground mud motor or guide plate according to the geological conditions to be traversed. The mud pump should be turned on to the soil entry point. It will drive the rotary cutting formation to continuously advance under the thrust of the drilling rig. After each drilling, the position must be measured to adjust the direction of the drill in time to ensure that the completed drilling guide curve can meet the design Requirements. Through such repeated operations until the completion of the operation, in this way, it is possible to avoid the problem that the work efficiency is affected by the deviation of the bit position.

Second, under normal circumstances, when using a small drill, if the diameter is greater than 200 mm, pre-reaming is required. The range and number of pre-reaming needs to be determined according to the geological conditions and the type of rig. A
The above are some matters that need to be paid attention to when using the horizontal directional drill. The invention of the horizontal directional drill provides protection for the pipeline, so that the related maintenance costs are reduced, and the cost is saved.