Productivity and Drainage Area of Fractured Horizontal Wells in Tight Gas Reservoirs
- 1 October 2008
- journal article
- conference paper
- Published by Society of Petroleum Engineers (SPE) in SPE Reservoir Evaluation & Engineering
- Vol. 11 (05), 902-911
- https://doi.org/10.2118/108110-pa
Abstract
Summary: This paper discusses the performance and productivity of fractured horizontal wells in heterogeneous, tight-gas formations. Production characteristics and flow regimes of unfractured and fractured horizontal wells are documented. The results show that if hydraulic fracturing affects stress distribution to create or rejuvenate natural fractures around the well, the productivity of the system is significantly increased. Unless there is significant contrast between the conductivities of the hydraulic and natural fractures, hydraulic fractures may not significantly contribute to the productivity. For extremely tight formations, the effective drainage area may be limited to the naturally fractured region around the well and the hydraulic fractures. It is also shown that very long transient flow periods govern the productivity and economics of fractured horizontal wells in tight formations. The results of this study are also applicable to oil production from fractured shale.Keywords
This publication has 22 references indexed in Scilit:
- Analysis of Horizontal-Well Responses: Contemporary vs. ConventionalSPE Reservoir Evaluation & Engineering, 2001
- Analyzing Well Production Data Using Combined-Type-Curve and Decline-Curve Analysis ConceptsSPE Reservoir Evaluation & Engineering, 1999
- An Analysis of Horizontal Wells Intercepted by Multiple FracturesSPE Journal, 1997
- New Solutions for Well-Test-Analysis Problems: Part 2 — Computational Considerations and ApplicationsSPE Formation Evaluation, 1991
- Fracturing Aspects of Horizontal WellsJournal of Petroleum Technology, 1990
- Pressure-Transient Analysis for Horizontal WellsJournal of Petroleum Technology, 1990
- Horizontal-Well Pressure AnalysisSPE Formation Evaluation, 1989
- Numerical Simulation of Water-Oil Flow in Naturally Fractured ReservoirsSociety of Petroleum Engineers Journal, 1976
- The Use of Source and Green's Functions in Solving Unsteady-Flow Problems in ReservoirsSociety of Petroleum Engineers Journal, 1973
- The Behavior of Naturally Fractured ReservoirsSociety of Petroleum Engineers Journal, 1963