Over the last decade, batch drilling has become increasingly prevalent in the petroleum industry as large and small investors alike seek to increase their profit margin. The perception of many of these oil companies was to drill and complete wells in batches with the hope of significant reduction in developmental cost for the field. That is, similar hole sections of different wells were drilled one after the other, the thinking being that efficiency and profits would be greatly increased.

One would therefore ask the question: Could batch drilling be used to develop marginal amounts of petroleum reserves anywhere in the world?

With respect to the experiences in Trinidad and Tobago, we have seen from several batch drilling projects that this type of drilling exercise may not be economical because of the geological makeup of our reservoirs.

This paper looks at the experiences of two such batch-drilling projects in Trinidad and Tobago and explores the cost effectiveness of such drilling, in our very complex and uncertain geology.

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