A Novel Approach To Detect Interacting Behavior Between Hydraulic Fracture and Natural Fracture by Use of Semianalytical Pressure-Transient Model
- Cong Xiao (China University of Petroleum, Beijing) | Leng Tian (China University of Petroleum, Beijing) | Yayun Zhang (China University of Petroleum, Beijing) | Tengfei Hou (China University of Petroleum, Beijing) | Yaokun Yang (China University of Petroleum, Beijing) | Ya Deng (China National Petroleum Corporation) | Yanchen Wang (Shengli Oilfield Service Corporation) | Sheng Chen (China National Petroleum Corporation)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- December 2017
- Document Type
- Journal Paper
- 1,834 - 1,855
- 2017.Society of Petroleum Engineers
- interference analysis, fractured reservoir, pressure transient analysis, interacting behavior, fracture geometry
- 5 in the last 30 days
- 291 since 2007
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The detection of interacting behavior between the hydraulic fracture (HF) and the natural fracture (NF) is of significance to accurately and efficiently characterize an underground complex-fracture system induced by hydraulic-fracturing technology. This work develops a semianalytical pressure-transient model in the Laplace domain to detect interacting behavior between HF and NF depending on pressure-transient characteristics. Our results have shown that no matter what the flow state (compressible or incompressible flow) within a hydraulically induced fracture system, we can easily detect interacting behavior between HF and NF depending on whether the “dip” shape occurs at the formation radial-flow regime. Referring to sensitivity analysis, distance between NF and well, horizontal distance between NF and HF, and NF length are the three most sensitive factors to detect fracture-interacting behavior. Depending on interference analysis, although the pressure-transient characteristics of a pseudosteady-state dual-porosity model can interfere with our proposed methodology, the difference between our model and a pseudosteady-state dual-porosity system lies in whether the value of the horizontal line of dimensionless pressure derivative is equal to 0.5 at the formation radial-flow regime. Our work obtains some innovative insights into detecting fracture-interacting behavior, and the valuable results can provide significant guidance for refracturing operations and fracture detection in an underground fracture system.
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