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REP00257
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REP00257
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Entry Properties
Last modified
8/24/2016 11:29:11 PM
Creation date
11/26/2007 9:36:57 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1999002
IBM Index Class Name
Report
Doc Date
6/23/2003
Doc Name
Cavity Characterization Plan
From
American Soda LLP
To
DMG
Media Type
D
Archive
No
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. 1. The wellhead on 29-24 will be modified to ANSI class 900 valves and <br /> fittings. A logging head will be installed on top of the long string tubular. <br /> The logging head will facilitate pressure control while performing the <br /> temperature fogs. <br />2. Natural gas will be directed through flow and pressure instrumentation <br /> and will be initiated down either or both the short tubing string or the short <br /> string casing on well 29-24. Concurrent with the natural gas injection, <br /> fluid from the cavity will be directed from the long string tubing on well 29- <br /> 24 through flow and pressure measurement and combined with the <br /> wellfield production fluid and transported by pump to the plant stripping <br /> facility. <br />3. ASLLP envisions initiating the test at rates between 20 - 50 gallons per <br /> minute of displaced fluid from the cavity for the initial startup. This will <br /> allow ASLLP to address any equipment or instrumentation issues that <br /> may be present. <br />4. During the startup phase, well 29-24 will be temperature logged every 24 <br /> hours. At present, it is unknown the degree of resolution that the <br /> temperature log will provide. It is anticipated that by shutting in the well <br /> for a period of 4 - 8 hours, a measurable temperature difference between <br /> the fluid and gas can be observed. <br />5. The initial temperature logs will be performed after 0, 2, 4, 6, and 8 hours <br /> of shutting in the wall. The "wait :ime" procedure for the temperature log <br />• will be adopted to correspond with the highest degree of gas-fluid <br /> intertace resolution. <br />6. As information and experience is gained on the temperature logging <br /> procedure, the time interval between temperature logs may be adjusted. <br /> It is possible that the temperature log time interval could be increased up <br /> to 96 hours between logs. <br />7. After completion of the startup phase, the injection rate of natural gas and <br /> the subsequent flow of displaced fluid will be slowly increased. The flow <br /> of displaced fluid will be the operational control. It is anticipated that <br /> displaced fluid flow rates of 200 gallons per minute can be achieved and <br /> maintained. <br />8. As the injection pressure of the natural gas approaches the natural gas <br /> pipeline pressure, compression of the natural gas will be initiated. The <br /> compressor will increase the pressure of the natural gas. Natural gas <br /> flow rates will be maintained at a higher pressure. <br />9. The displacement will continue until the majority of the fluid is displaced <br /> from the cavity. ASLLP proposes placing a 50' - 100' safety buffer from <br /> the bottom of the long string tubing. The safety buffer would insure that <br /> natural gas would not be introduced into the displaced fluid. The safety <br /> buffer will prevent the characterization of the last 50' - 100' of the cavity. <br />10. Upon completion of the displacement, the well will be shut in. The gas <br /> pressure from the well will be slowly vented and directed through the gas <br />• pipelines to the Piceance facility boilers and/or gas separator flares. <br />
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