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GeoStrategies Inc. <br /> April 20, 1990 <br /> Well_Develume n t <br /> i <br /> All newt installed wells well be <br /> Y properly developed within 48 hours <br /> of completion No well will be developed until the well seal has set <br /> a minimum of 12 hours Development procedures will include one or <br /> more of the methods described below <br /> Bailing <br /> Bailing well be used to remove suspended sediments and drilling <br /> fluids from the well, where applicable The bailer will be <br /> raised and lowered through the column of water in the well so as <br /> to create a gentle surging action in the screened interval This <br /> technique may be used in conjunction with other techniques, such <br /> as pumping, and may be used alone if the well is of low yield <br /> Pumping <br /> Pumping well be used in conjunction with bailing or surging The <br /> pump well be operated in such a manner as to gently surge the <br /> entire screened interval of the well This may involve operating <br /> the pump with a packer type mechanism attached and slowly raising <br /> and lowering the pump, or by cycling the pump off and on to allow <br /> water to move in and out of the screened interval Care well be <br /> used not to overpump a well <br /> Surging <br /> Surging will be performed on wells that are screened in known or <br /> suspected high yield formations and/or on larger diameter <br /> (recovery) wells A surge block well be raised and lowered <br /> through the entire screened interval, forcing water in and out of <br /> the well screen and sand pack Pumping or air lifting will be <br /> used in conjunction with this method of development to remove any <br /> sediment brought into the well during surging <br /> Air Lifting <br /> Air lifting will be used to remove sediment from wells as an <br /> alternative to pumping under certain conditions When <br /> appropriate, a surge block designed for use with air lifting will <br /> be used to agitate the entire screened interval and water will be <br /> lifted out of the well using forced air When air lifting is <br /> performed, the air source well be either nitrogen or filtered air <br /> and the procedure will be performed gently to prevent any damage <br /> to the well screen or casing and to insure that discharged water <br /> is contained <br /> r <br /> Page 4 <br />