Drill fluid powered hydraulic system

Patent · Tue Jul 08 04:00:00 EDT 1980

OSTI ID:5074645

Kellner, J

A rotary drill shaft driving system is decribed that is adapted to be connected to drill pipe providing a source of drill fluid to the system and useful for rotating a drill shaft having a bit connected at one end of the shaft, through the use of drill fluid supplied to said system, comprising: a motor driven by hydraulic fluid flowing in only one direction and connected to such shaft means for rotation of such shaft; drive means for supplying said hydraulic fluid flowing in said one direction; actuation means adapted to receive drill fluid from said source and responsive to flow of said drill fluid for actuating said drive means; and coordination means responsive to rotation of such shaft for synchronizing flow of drill fluid to said actuation means with supply of hydraulic fluid to said drive means, said drive means including: first supply means for holding and supplying only a fixed amount of said hydraulic fluid, and a first valve actuated by said coordination means for causing said flow of said fixed amount of said hydraulic fluid to be substantially smooth and unidirectional; said first supply means being in fluid flow communication with said first valve, said actuating means including: reciprocating sealed piston means, second supply means for receiving and supplying a fixed amount of said drill fluid, said piston means being located between said first and second supply means; and a second valve actuated by said coordination means and in fluid flow communication with said source of drill fluid and said second supply means, said second valve including an outlet and means for converting such discrete amounts of such drill fluid to a continuous flow of such drill fluid at said outlet.

• Assignee: Smith International Inc
• Patent Number(s): US 4211291
• OSTI ID: 5074645
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
ACCUMULATORS
CONTAINERS
CONTROL EQUIPMENT
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
DRILLS
EQUIPMENT
FLOW REGULATORS
FLUIDS
HEAT EXCHANGERS
HYDRAULIC EQUIPMENT
MACHINE PARTS
ROTARY DRILLS
SHAFTS
TANKS
VALVES