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Keywords: analytical solution
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Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205862-MS
... assumption. Moreover, this work presents the approximate analytical solutions to analyze main-dominating heat transfer mechanisms at different flow periods and further offers a semilog-straight-line method to analyze the sandface temperature measurements during drawdown and buildup periods in the NFGRs...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206245-MS
... in such transient conditions. The full time-dependent analytical solutions are then utilized to obtain the final production allocation. The methodology has been developed and validated using data from a dozen of tracer campaigns. The approach is here presented through a selected case study, where a parallel...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-204274-STU
... to make an EGS project successful, extensive studies should be conducted, especially for the purposes of evaluating and predicting future thermal performance of subsurface system. The main objective of this study is to present novel analytical models and their analytical solutions for predicting...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201658-MS
... (or MFHW) does not have a general analytical solution due to high complexity in the non-linear terms (although, as comment, there are several approximate and analytical solutions for the single-phase version of this problem). As such, we validate our solution approach in steps, based on the number...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201531-MS
... during both fracture propagation and well shut-in periods. To model fluid leakoff during fracture propagation, we adopt the superposition principle to decompose the problem into two separate problems; we then obtain the analytical solution. Two synthetic cases are presented to validate the proposed...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195900-MS
... Abstract This paper presents a simple yet rigorous analytical solution for two-phase (gas-oil) flow in closed volatile oil reservoirs. The solution includes all flow regimes over the life of a multi-fractured horizontal well, including the usually long-duration early transient flow followed...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195947-MS
... in turn reversely affects the productivity index of the production well. A new nonlinear analytical solution is developed for the drawdown-dependent productivity index of reservoirs under steady-state flow. Biot's theory of poroelasticity is used to derive the depletion-induced changes in the reservoir...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196154-MS
... f 2 w f / 2 − k f z k f y h Δ p f 1 − Δ p f a 1 L = 1 η f y ∂ Δ p f 1 ∂ t In this study, we propose an analytical solution for fault leakage into multiple overlying layers. The vertical fault intersects...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195991-MS
... and the irreducible water are in a local thermal equilibrium so that their temperatures are identical, i.e., T s = T w = T o = T , No heat transfer exists to over- and under-burden strata from the reservoir, and Gravity and capillary effects are negligible. The analytical solutions...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191524-MS
... of the injection layer. A periodic flow rate pulse is disseminated from the injection well. The pressure pulses traveled through the caprock are observed in the above zone. The hydraulic characteristics of the low permeability caprock are estimated applying the analytical solution based on the above zone pressure...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191602-MS
... permeability, which can transform the initially sealing fault into partially conductive. This paper examines the transient pressure response to a sudden change in anisotropic fault permeability as an indicator of fault seal breakdown. Analytical solutions for pressure-transient response for a line-source...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191568-MS
... domains. We discuss the transfer function between the two domains and apply approximations to the analytical solution to define a "correction factor" that is applied to the Warren and Root type transfer function. The approach used in this work is adopted from previous work by Zimmerman et al. (1993 ) who...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191670-MS
... reservoir simulation displacement Earthquake flow in porous media friction initial pressure Injection Rate fluid flow fracture Magnitude analytical solution injection equation reservoir Upstream Oil & Gas reservoir simulator simulator seismicity wastewater injection permeability...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191698-MS
... calculation primary fracture ddpv Upstream Oil & Gas reservoir pressure production data drillstem/well testing square-root-of-time model fluid property Clarkson Artificial Intelligence compressibility porosity analytical solution heterogeneous reservoir Reservoir Heterogeneity reservoir...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187225-MS
... reservoir geomechanics Simulation shear failure Upstream Oil & Gas cavity shape v-shaped cavity flow assurance mechanism experiment Reservoir Characterization sand production Papamicho analytical solution cavity Haimson plastic strain stress contrast failure pattern...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187280-MS
...). Finally, using a modified analytical solution in the frequency domain, the hydraulic diffusivity coefficient is obtained. The modified analytical solution only takes pressure data at the pulsing well and the observation well; no injection-rate data is required in the analysis. We verified the accuracy...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187232-MS
... simulation Fluid Dynamics numerical simulation analytical solution integral transformation waltrich Raghavan dynamic ipr ipr model relative permeability Garcia gas-oil ratio flow rate Sousa bottomhole permeability To this day, well deliverability is still obtained by nodal analysis...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187063-MS
... Permeability permeability value formation pressure Drillstem Testing open interval pressure transient solution pressure interference multiple impulse test analytical solution reservoir pressure pulse formation layer pressure response wellbore interval impulse response multiple location impulse...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187178-MS
... Abstract In this work, to the knowledge of the authors, it is the first time that an analytical solution demonstrates how the pressure profile changes with frequency and when this change takes place. Case studies are also presented to analyze the impact of different pressure profiles on well...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181473-MS
... (PDHG), the new developed technique can be used without additional operational cost or interruption of field operations. In this paper, the effects of polymer are described by shear rate dependent viscosity (non-Newtonian flow). We developed an analytical solution of wellbore pressure by combining...

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