Over the last decade, foam as a cleaning agent has become widespread in the drilling of wells for solid minerals.
Introduction in the practice of drilling works of the technology of diamond drilling of wells with flushing with foam cleaning agents has shown the necessity of development of drilling mode parameters taking into account the influence of the temperature factor.
The development of a methodology for calculating the depth of pneumatic percussion drilling with the use of gas-liquid cleaning agent seems to be very important for the correct assessment of the possibilities of pneumatic percussion drilling and determination of rational modes of supplying gas-liquid mixture (GMS), providing the maximum energy parameters of the pneumatic percussion at minimum pressure losses in the well.
Foam is one of the varieties of flushing agents, especially promising when drilling wells in complicated conditions. Practical development of this affective technological means requires a well-founded by calculations selection of pumping and compressor equipment, design of rational modes of circulation ...
Currently, the most productive method of drilling exploration wells with air blowing is pneumatic percussion drilling. In 1979 about 200 thousand meters of wells were drilled by this method during exploration of mineral deposits ...
The most productive method of drilling with air blowing is drilling with the use of submersible pneumatic drills. Application of this progressive drilling method is limited by complications caused by formation water inflows into the well, which cause formation of slurry glands and plugs ...
Well sinking in mudstones of the Exploration Formation is usually accompanied by collapse of well walls. This leads to high time consumption for wellbore development and re-drilling of collapsed intervals ...
The study of mineralogical composition and physical and mechanical properties of rocks is an important stage in the process of development and selection of flushing fluids for drilling exploration wells ....
