Conoco Inc.

Mark P DiStefano

Jack H Cole

C Michael Swindoll

Paul E Pilkington

Marvin C Allen

The invention relates to an apparatus for grouting holes in the ground to prevent a contaminated zone within the ground from contaminating other zones in the ground. In particular, the grouting apparatus is adapted to follow the hole previously formed in the ground and not detour therefrom forming a separate hole which will be grouted in lieu of the previously formed hole. When the grouting apparatus reaches the bottom of the hole, grouting material is expelled from the lower end thereof. The apparatus is thereafter withdrawn as the grouting material fills the vacated hole. The apparatus comprises a plurality of tubular segments connected together to form a pipestring. At the bottom end of the string, there is attached a tip assembly. The tip assembly comprises an outer tubular sleeve and an internal telescoping tubular sleeve. The internal tubular sleeve includes a pointed tip with a shoulder having a larger diameter than the internal tubular sleeve and at least one port along the tubular sleeve for allowing passage of the grouting material out of the string.

Method of sealing holes in the ground

This invention relates to a device for cleaning and decontaminating rods, shafts or other long tubular materials. In particular, the device cleans and decontaminates rods that are used in downhole remediation tasks that might otherwise transfer contaminants out of the ground. The device scrubs, washes, rinses and dries the outer surface of the rod while recovering the wash and rinse fluids and any soil or other debris scrubbed from the surface of the rods. In one variation, the rinse fluid is recycled for use as wash fluid to conserve fluids used in the field.

Shaft cleaning and decontamination apparatus

Method and apparatus for downhole chromatography. A tool housing includes a chromatograph and a formation tester for extracting a fluid sample from a formation adjacent the wall of an uncased well bore. When such a sample is extracted it is directed into the chromatograph which analyzes the same and transmits the information to the surface. Thereafter, solvent from a reservoir in the housing is used to purge the chromatograph to enable the tool to be relocated to a different level for additional formation fluid analysis.

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Ponca City, OK, United States of America

Mark P DiStefano