Interpretation of pressure decline for minifracture treatments initiated at the interface of two formations
- Amoco Production Co., Tulsa, OK (USA)
This paper extends the classic pressure-decline analysis to the more complex case where the minifracture is initiated near the interface of two formations and penetrates two or more formation layers of different leakoff characteristics. The development shows that the classic analysis is still valid, but it gives an effective or average leakoff coefficient that depends on the areal extent of the minifracture at the end of pumping in each individual layer. Examples demonstrate how to estimate individual layer leakoff coefficients with this theory, minifracture pressure-decline field data, and the fracture geometry predicted by a 3D fracturing simulator. Finally, the results obtained are used to explain field fracturing observations.
- OSTI ID:
- 7017510
- Journal Information:
- SPE (Society of Petroleum Engineers) Production Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Production Engineering; (USA) Vol. 5:1; ISSN SPENE; ISSN 0885-9221
- Country of Publication:
- United States
- Language:
- English
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03 NATURAL GAS
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COMMINUTION
FIELD TESTS
FRACTURED RESERVOIRS
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GEOMETRY
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MATHEMATICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PRESSURE DROP
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THREE-DIMENSIONAL CALCULATIONS
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