| Autor: |
Richard S. Wheeler, D. V. Satya Gupta, Harold Dean Brannon, Marshall G. Ault, Hong Sun, Paul S. Carman, Jia Zhou |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Day 1 Mon, September 28, 2015. |
| DOI: |
10.2118/174801-ms |
| Popis: |
The primary objective of hydraulic fracture stimulation is to use “ideal” fracturing fluids to initiate and propagate fractures, transport proppant and place a conductive proppant pack in the created fracture. Resident hydrocarbons may be more easily produced in the created fracture broadways. Thus, optimization of conductive fracture area is perhaps the most critical tenets of fracture stimulation. The effective fracture area is characterized by the conductive fracture height and length, and is often compromised by the inability to place the proppant throughout the created fracture area. Several attempts have been implemented to improve the effective fracture area, such as hybrid fracturing, ultralightweight proppant (ULWP) delivery, channel fracturing, and slug fracturing. The techniques are all based on viscosity-governed proppant transport mechanisms. This paper proposes a new fluid system for nearly perfect proppant suspension to improve proppant transport and vertical distribution in fractures. It improves effective fracture height by placing proppant across the complete productive interval under downhole conditions when properly applied. This leads to better transverse and vertical placement of proppant in the fracture and significantly increases the fractured surface area. The degradability of the fluid can lead to non-damaged fracture conductivity with time by internal or external stimulus. Criteria and considerations for successful applying such fluids to optimize proppant placement and maximize fracture conductivity are discussed. Job design is elaborated in terms of fluid mechanics and proppant transportation mechanics differences and benefits over traditional crosslinked gel systems. The execution, experiences, and subsequent well performance of treatment applications results are compared to offsets treated with a traditional crosslinked gel system. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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