Captive refinery MTBE plants

 - Captive refinery MTBE plants

Carbon monoxide (CO)

 - Carbon monoxide (CO)

Carbon sink

 - Carbon sink

Casing

 - Casing

Casinghead gas (or oil well gas)

 - Casinghead gas (or oil well gas)

Catalysts

 - Catalysts

Catalytic cracking

 - Catalytic cracking

Catalytic hydrocracking

 - Catalytic hydrocracking

Cellulose

 - Cellulose

Cellulosic ethanol

 - Cellulosic ethanol

Cement

 - Cement

Central warm air furnace

 - Central warm air furnace

Cetane Number

 - Cetane Number

Christmas Tree

 - Christmas Tree

Clean Ballast

 - Clean Ballast

Co-generation System

 - Co-generation System

Cofiring

 - Cofiring

Compressed natural gas (CNG)

 - Compressed natural gas (CNG)

Concession

 - Concession

Condensate

 - Condensate

Contracted gas

 - Contracted gas

Conventional oil and natural gas production

 - Conventional oil and natural gas production

Cracker/Cat Cracker

 - Cracker/Cat Cracker

Crine

 - Crine

Crude oil

 - Crude oil

Crude oil acquisitions

 - Crude oil acquisitions

Cryogenic

 - Cryogenic

CSWIP

 - CSWIP