Method for removing earth cuttings from holes being formed by a

Details Method for removing earth cuttings from holes being formed by a Method for removing earth cuttings from holes being formed by a

1982-11-22

1985-02-19

Suchfield, George A.

Boring or penetrating the earth

Processes

Boring with specific fluid

175320, E21B 718

Patent

active

044999577

ABSTRACT:
Disclosed is an apparatus and method for reducing the quantity of air or other gas needed to remove earth cuttings from a hole being drilled in the earth. The apparatus includes an accelerator core having connectors at each end for installing the accelerator in a string of drilling pipe. The accelerator core is hollow so that compressed air can be conveyed through to the drill tool assembly. Attached to the accelerator core is a pair of flanges which support a sleeve. The apparatus restricts the available flow area thereby accelerating the flow of air exhausting from the drill hole, to remove the drill cuttings using a minimum of pneumatic gas. The accelerators are spaced appropriately throughout the drilling string.

REFERENCES:
patent: 1801788 (1931-04-01), Zublin
patent: 2595715 (1952-05-01), Sloan
patent: 3172487 (1965-03-01), Klotz
patent: 4076083 (1978-02-01), Sizer

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