La Reforma FieldHidalgo County, Texas
- Sierra purchased the La Reforma Field from Merit Energy in 2002
- 4,800 acres
- Existing production 4.6 MMcfe/d
- Sierra acquired an existing 3-D database and combined it with surveys from ExxonMobil and Shell
- Subsequently, Sierra increased the land position to 6,300 acres
- Drilled and completed 22 successful wells
- Exit production 27 MMcfe/d
- La Reforma was sold to Chesapeake Energy in 2006
- Subsequently, Chesapeake increased production to a peak rate of 60 MMcfe/d
