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Keywords: natural fracture
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Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 15–17, 2019
Paper Number: SPE-196585-MS
... fracture network flowback proppant natural fracture permeability evolution flowback rate reservoir society of petroleum engineers unpropped part equation fracture closure closure behavior permeability fracture propagation Unconventional shale reservoirs have become an essential source...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 15–17, 2019
Paper Number: SPE-196613-MS
... field legacy data and numerical simulation outputs to develop proxy models that improve sweet-spot analysis and production estimates in unconventional reservoirs. machine learning regression support vector machine upstream oil & gas natural fracture artificial intelligence coefficient...
Proceedings Papers

Paper presented at the SPE/AAPG Eastern Regional Meeting, October 7–11, 2018
Paper Number: SPE-191809-18ERM-MS
... process is not fully understood. This paper provides a comprehensive workflow to model the fracture pattern development by accounting for interactions with numerous natural fractures. We present a robust finite element model with adaptive insertion of three-dimensional cohesive elements for fracture...
Proceedings Papers

Paper presented at the SPE/AAPG Eastern Regional Meeting, October 7–11, 2018
Paper Number: SPE-191800-18ERM-MS
... Abstract Natural fractures are the main producibility factor in the weathered granite reservoirs (basement rock) and volcanic-rock reservoirs. Production practices show that these reservoirs could have high production rate, but the difference of well productivity between single wells is obvious...
Proceedings Papers

Paper presented at the SPE/AAPG Eastern Regional Meeting, October 7–11, 2018
Paper Number: SPE-191778-18ERM-MS
... instantaneous shut-in pressure ISIP along the horizontal length, shale lithofacies variation and natural fracture (fissure) in the reservoir, it is possible to estimate the contribution of different stages to the production for both wells MIP-4H and MIP-6H. shale gas Modeling & Simulation natural...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 4–6, 2017
Paper Number: SPE-187524-MS
... Abstract Microseismicity is a physical phenomenon which allows us to estimate the production capability of the well after hydraulic fracturing (HF) in a naturally fractured (NF) reservoir. Some of the microseismic events are reactivations of NFs induced by a direct hit of HF, while others are...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 4–6, 2017
Paper Number: SPE-187533-MS
... both the clay swelling and related issue of brine (within the dilute HCl solution) and rock-acid reaction. (2) Matrix permeability of calcite rich shales improved with dilute acid imbibition. (3) Effective fracture permeability of un-propped (natural fracture) calcite rich and clay rich shales are...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 4–6, 2017
Paper Number: SPE-187535-MS
... Abstract The production from a hydraulically fractured unconventional well depends on the stimulated permeability and its interaction with the naturally fractured background permeability. Since the propagation of a hydraulic fracture is often asymmetric and depends on geomechanical factors, the...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, September 13–15, 2016
Paper Number: SPE-184077-MS
... Abstract Unconventional reservoirs require hydraulically fractured horizontal wells in order to produce reservoir fluids economically. Induced hydraulic fractures interacting with pre-existing natural fractures results in complex fracture networks (CFNs). Even though hydraulic fracture...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, September 13–15, 2016
Paper Number: SPE-184060-MS
... Figure 6 Pressure build-up responses for various minimum natural fracture length values; natural fracture density equals to 2.5; the time scale is set between 0 and 10 days. Figure 7 Pressure build-up responses for various natural fracture strike values; "80-20" represents 80% of...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 13–15, 2015
Paper Number: SPE-177319-MS
... Abstract To model hydraulic fracture propagation in naturally fractured reservoirs, fracture propagation is generally assumed to be a single planar fracture propagated only in the vertical direction from a horizontal well, regardless of the presence of natural fractures. In this paper, we...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 21–23, 2014
Paper Number: SPE-171016-MS
... Abstract The most effective method for stimulating unconventional reservoirs is using properly designed and successfully implemented hydraulic fracture treatments. The interaction between pre-existing natural fractures and the engineered propagating hydraulic fracture is a critical factor...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 21–23, 2014
Paper Number: SPE-171006-MS
... along natural fractures and faults so high uranium spikes can help identify their presence. The Density wireline tool provides a measure of the formation density and is normally used to calculate porosity. The low density of kerogen appears as excess porosity, a fact that can be used to derive a...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, August 20–22, 2013
Paper Number: SPE-165681-MS
... effect of free gas, adsorbed gas and dissolved gas in a material balance crossplot of P/Z vs. cumulative gas production. Historically, the large contribution of organic porosity, natural fractures and hydraulic fractures that can contribute a significant amount of free petroleum in place has not been...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, August 20–22, 2013
Paper Number: SPE-165698-MS
... perpendicular to a horizontal well. Some of these models include natural fractures perpendicular to the hydraulic fractures. In these models, there is uncertainty in whether transient linear flow is dominated by fractures or matrix. Identification of the medium in transient flow usually requires assuming...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, August 20–22, 2013
Paper Number: SPE-165713-MS
... Li et al. (2013) proposed a numerical model that integrates turbulent flow, rock stress response, interactions of hydraulic fracture propagation with natural fractures, and influence of natural fractures on formation Young's modulus. They postulate that the pre-existing natural fractures in...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, August 20–22, 2013
Paper Number: SPE-165721-MS
... Odusina et al. (2011) is one of the few studies that did an experiment on 1 inch by 1 inch core but reported natural fractures present in the sample, which might show the imbibition effect is from the fractures and not the matrix as shown in Fig. 2 . The author concluded that Eagle Ford and...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 13–15, 2010
Paper Number: SPE-136532-MS
... understood that hydromechanical behavior of natural fractures is affected by the state of the stresses in the deep formations ( Matsuki et al. 2008 ; Bratton et al. 2004 ). The state of the stresses in a field is represented by the magnitude and the direction of three principle stresses, which are mainly...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, September 23–25, 2009
Paper Number: SPE-125987-MS
... production is dependent upon the number of natural fractures intercepted and long-term production is dependent upon the amount of surface area exposed in the fracture network. Total improved production is dependent upon complex fracture geometry, which is influenced by many factors: stress contrasts, fluid...
Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, September 23–25, 2009
Paper Number: SPE-125893-MS
... conducted using a publicly available numerical model, specifically developed to simulate gas production from naturally fractured reservoirs. Reasons for selecting a non-commercial simulator for this study were two folds. First, we wanted to make sure that our results, discussions, and conclusions are...

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