Well Development Techniques Part (4)
Well Jetting
Development by high velocity jetting may be done with either water or air. A jetting tool is attached to the lower end of the drill string and lowered to the bottom of the well screen. Rotation is controlled by the rotary rig. The jetting tool activated by either air or water forces high-pressure fluid out the nozzles of the tool very effectively, developing the formation. Because of the high pressures used damages to the well screens may result through improper use of jetting tools. However, jetting is seen as possibly the most highly effective development technique in terms of well yield after completion. The essential point to be made is that yield depends to a great extent on the development method used. Particles loosened by jetting tools may be later removed by pumping or bailing.
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