Highly deviated or horizontal wells have led to new thinking in the application of well completion and stimulation technology. Horizontal drilling technology has advanced rapidly over the past few years. It is now common to be able to drill and control horizontal holes of greater than 1,000ft. displacement. However, horizontal completion technology is still on a steep learning curve and many completion practices need to be refined to contribute to the economic success of a horizontal project. In addition, a better understanding of reservoir performance with horizontal completions will be needed.
Proven completion techniques used in less deviated wells have not proved to be cost effective or efficient in this new application. This paper addresses several of these problem areas by discussing the shortcomings of vertical well completion technology and offers solutions to horizontal applications.
Specific completion areas discussed include production string isolation, influence of horizontal wellbore deviation, stimulation considerations, sand control and downhole production equipment. Case histories of three Bima Field wells, offshore Indonesia, are presented to illustrate various completion practices.