Rotating head for air, gas and mud drilling

Details Rotating head for air, gas and mud drilling Rotating head for air, gas and mud drilling

1981-02-10

1983-05-17

Purser, Ernest R.

Wells

Above ground apparatus

Central valve or closure and lateral port

277 31, 308187, 175229, 175195, E21B 302

Patent

active

043835775

ABSTRACT:
A rotating head assembly having roller thrust bearings rotatably journaling an inner barrel is provided with pump means for continuous forced circulation of lubricating oil to, and around, the thrust bearings during operation. A lubricating oil chamber substantially surrounds the bearings, which chamber is effectively sealed against leakage of oil fluids, and other debris, into the chamber and lubricating oil out of the chamber. The lower end of the rotatably journaled inner barrel is provided with a stripper rubber structured to enable use of the head with drill pipe of diverse outer diameters.

REFERENCES:
patent: 1157644 (1915-10-01), London
patent: 3400938 (1968-09-01), Williams
patent: 3529835 (1970-09-01), Lewis
patent: 4037890 (1977-07-01), Kurita et al.
patent: 4181185 (1980-01-01), Keller et al.
patent: 4304310 (1981-12-01), Garrett

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