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Several tasks will need to be completed before the natural gas injection can <br />be initiated: <br />7. Engineering study to determine the affects of confining pressure on the <br />cavity stability. <br />Agapito and Associates has performed a study of the relationships of <br />cavity diameter, cavity pressure, and cavity pressure cycling to overall cavity <br />stability. Past work indicates that by managing size and cavity pressure, a long <br />term stable cavity can be maintained. This study will serve as ASLLP's guidance <br />for this issue. This engineering study is included as a supplement to this plan. <br />2. Install an 8" tap into the Piceance facility natural gas pipeline. <br />To provide natural gas for the displacement of the fluid from well 29-24, a tap <br />will need to be installed on the 8" natural gas pipeline currently feeding the <br />boilers at the Piceance facility. The area chosen for the tap is directly southeast <br />of well 20-36. This is a disturbed area with excellent access. No additional <br />disturbance would be anticipated. (Figure 3) <br />The tap will consist of an 8" weld-in tee and hot tap. ASLLP has performed this <br />type of work in the past. <br />• Upon completion of the hot tap a 4" to 8" isolation valve will be installed. <br />~ 3. Install approximately 3500 feet of 4"surface pipeline to transport natural <br />gas to well 29-24. <br />To provide natural gas for the displacement of the fluid from well 29-24, a <br />4" pipeline will be installed on the Piceance facility main piperack. This line will <br />start directly southeast of v!~e1120-36 and end at well 29-24 following the existing <br />pipe rack. This is a disturbed area. No additional disturbance would be <br />anticipated. (Figure 4) <br />4. Install a gas compressor to compress the gas for downhole injection. <br />A natural gas fuel reciprocating gas compressor will be installed on the 29- <br />~I 24 well pad. The compressor will be set within the area of the well location. No <br />additional disturbances are anticipated. <br />The compressor will be a self contained rental unit. The installation will <br />require the construction of a sand base on the well pad. The unit will be <br />transported by truck to the location, and then installed. (Figure 5) <br />• <br />