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Information Only - Waste Isolation Pilot Plant - U.S. Department of ...

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Xl-36<br />

that no such structure, and hence no economic hydrocarbon accumu.ation, exists in these<br />

deeper zones within the confmes <strong>of</strong> the WIPP land withdrawal area, Consequently, ba,:,::':<br />

on available data, it appears thaI me Pennsylvanian Strawn, Atoka, and Morrow,~tions<br />

are the only pre-Penlian stratigraphic units with significant eccmomic oil and gas<br />

pGlcntiai underneath theii.:IPP site,<br />

PROJECTED FUTURE On.. AND GAS PRODUCTION<br />

Future oil. gas, and gas condensate production was projected (estimated) on an<br />

anmlaJ basis for oil and gas pools with probable resources underneath the WIPP land<br />

withdrawal area and surrounding one-mile-wide additional study area. Projections<br />

were made separately for each oil and gas pool or reservoir stratum projected to<br />

extend under the WIPP land withdrawaJ. area.<br />

Projections for primary recovery were made using the following factors:<br />

1) The average or typical production decline curves generated for each<br />

<strong>of</strong> the pools (primary recovery);<br />

2) Wells presently producing within the WIPP land withdrawal area and<br />

additional study area and the expected remaining production life for<br />

each <strong>of</strong> these wells;<br />

3) Projected future rates <strong>of</strong> drilling for undrilled proration spacing<br />

locations identified as containing probable resources. assuming that<br />

WIPP is not closed to drilling - future rates <strong>of</strong> drilling were based on<br />

histOrical rates <strong>of</strong> drilling in each oil and gas pool projected to extend<br />

underneath WIPP;<br />

4) Estimated probable oil and gas resources recoverable by primary<br />

production methods.<br />

Projections for secondary (watert100d) recovery were made using the following<br />

factors:<br />

1) Estimated probable oil and gas resources recoverable by waterflood<br />

production methods;<br />

2) Estimatea tuture annual pr:::ary production <strong>of</strong> oil and gas;<br />

3) Historical secondary recovery rates <strong>of</strong> analogous watertlooded oil<br />

pools as a function <strong>of</strong> primary production and decline in primary<br />

production.<br />

<strong>Information</strong> <strong>Only</strong>

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