Deep drilling machine demountable for helicopter transport

In a drilling apparatus for drilling small diameter bore holes deep into the earth, said apparatus designed, for transportation purposes, to be demountable into a plurality of subassemblies, each having a weight less than a specified magnitude, the improvement comprising:

• a. a plurality of separate drive subassemblies, each of said drive subassemblies comprising;
• 1. a drive subassembly housing;
• 2. an engine;
• 3. a speed transmission means operable at the high speed of said engine, said transmission means including gear means to provide a plurality of reduced output speeds;
• 4. means to couple said engine to said transmission, and said transmission to drive means in said drive subassembly;
• 5. pump means;
• 6. means including clutch means to connect said pump means to said drive means in said subassembly;
• 7. means to connect said housings of a plurality of said subassemblies into a single compound assembly housing;
• and
• 8. means to connect a plurality of said drive means in a plurality of said subassemblies to a single output drive shaft;
• b. a drawworks comprising;
• 1. a drawworks housing;
• 2. an output drive shaft, including cable reel means on said output drive shaft;
• 3. input drive means comprising two separate drive shafts;
• 4. separate drive means, including clutch means, for coupling drive shaft to said output shaft;
• each of said drive means of different step-down speed ratio;
• 5. means to couple said two input drive shafts to turn together;
• and
• c. means to couple the output drive shaft of (a) to the input drive means of (b).