WELLSITE
Well-Site Geology service provides on-site geological supervision to deliver reliable and accurate decision-making information during oil and gas well drilling.
The purpose of this reference guide is to outline and describe the duties and responsibilities of a Wellsite Geologist. In addition, it will provide a detailed series of guidelines and procedures which are followed by Wellsite Geologists during their stay at the wellsite. This will enable the maximum amount of data to be obtained, the data recorded concisely and then communicated in a timely manner to the responsible personnel. |
This text addresses geologists who are going out to work as wellsite geologists in an offshore or onshore location for the first time. It gives instructions and a checklist-type overview over those wellsite operations which need geological input or supervision. THE WELLSITE GUIDE is not a sample description manual or geological data handbook. It is assumed that the wellsite candidate is – first of all – a geologist and knows, owns and is capable of using the basic tool kit of geological reference books, log charts and computer utilities, as far as they are of relevance for the work. |
Mud logging is a useful evaluation technique that has developed since the advent of rotary drilling in the 1920’s. Since mud circulates constantly during drilling, mud logging can provide information on a continuous formation sample. A mud logger checks mud for oil and gas and collects bit cuttings for analysis. Bit cutting analysis is very useful, since it can tell much about rock types and formation characteristics, which must be known for mapping formation beds. Information gathered by mud logging is recorded on a mud log. |
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