Investigating Modern Methods of Water Wells Rehabilitation for Use in Iran

One of the problems in wells after long term use is creation of deposits on well screen or gravel packs. The deposits, despite the presence of water in the context of the aquifer, prevent the penetration of water into the well. As a result, it greatly reduces the amount of water production of the well. Rehabilitation of wells is removing the deposits from the front and back of the well screen. There have been some methods of well rehabilitation before, but today, with the development of technology, more efficient methods have been developed which cause less damage to the aquifer and the environment. In this study, new methods of well rehabilitation is investigated for implementation in Iran. A criteria for determining the efficiency of the methods is proposed. The method of air shock in combination to water jet is estimated to be more efficient with less time and cost consumption for implementing in Iran.