Control of capital expenditure on drilling/completion operations is important. In many instances the cost of drilling has meant that projects were deferred or cancelled completely. This paper discusses the factors which should be considered in reducing drilling/ completion costs by improving performance in the well pre-planning to well on production, cycle.
Major technological advances in equipment utilised in all aspects of drilling operations are also discussed, highlighting their benefits.
The use of computers for handling and storage of information can assist in the task of analysing drilling performance. An accurate database is of overriding importance and fundamental to being able to define where improvements can be made. A recent case history of one of Shell International’s operating companies is discussed as an example of the techniques employed in analysing performance and data are presented to illustrate the points made.
In a large international company such as Shell, with exploration and development drilling operations worldwide, some means of ensuring that operating departments learn from each other is also required. Performance indicators were developed to assist both operating departments and specialists in Shell Central Offices in The Hague to accomplish this. The benefits of such indicators from the drilling/completion performance aspect are discussed and numerical examples are given which illustrate how such indicators may be used to pinpoint adverse trends.