Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Nov 8, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Sep 13, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Aug 2, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Jan 31, 1984

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

—

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Oct 11, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Jan 31, 1984

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Mar 20, 1984

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Mar 20, 1984

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Mar 20, 1984

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Apr 26, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Apr 26, 1983

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

—

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Aug 17, 1982

Chemicals

Owner

ROUGHRIDER DRILLING FLUIDS, INC.

Aug 17, 1982