Fracturing high-permeability reservoirs increases productivity
- Halliburton Energy Services, Duncan, OK (United States)
- Halliburton Energy Services, New Orleans, LA (United States)
Hydraulic fracturing of high-permeability reservoirs has increased long-term hydrocarbon production and reduced sand production in many areas of the world. A key element is the reduction of near well bore drawdown during production. Drawdown, the difference between reservoir and production pressures, is the driving force for flow into the well bore. As drawdown increases because of higher production rates or depletion, formation instability may cause fines and sand to migrate into the well bore region. A greater well bore radius reduces both radial velocity and drawdown. Fracturing beyond the well bore region effectively bypasses the damaged zone, increasing the effective radius of the well bore and enabling higher flow rates with lower drawdown pressures. In essence, the reservoir energy is used more efficiently because the conductive proppant bed bypasses the near well bore restrictions. The paper discusses candidate well selection; proppant selection; sand control; minifrac procedures; spurt losses; fracture design; equipment; case histories in West Africa and offshore Louisiana.
- OSTI ID:
- 7262613
- Journal Information:
- Oil and Gas Journal; (United States), Vol. 92:25; ISSN 0030-1388
- Country of Publication:
- United States
- Language:
- English
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