Numerical Seepage Model for Joint Type Loess

2018 ◽  
pp. 110-119 ◽  
Author(s):  
Yang Luo ◽  
Wen-chieh Cheng ◽  
T.-H. Wang
Keyword(s):  
Seepage Model

Tightness and stability evaluation of salt cavern underground storage with a new fluid–solid coupling seepage model

2021 ◽  
Vol 202 ◽  
pp. 108475
Author(s):  
Xiangsheng Chen ◽  
Yinping Li ◽  
Yufeng Shi ◽  
Yang Yu ◽  
Yalong Jiang ◽  
...  
Keyword(s):  
Underground Storage ◽  
Stability Evaluation ◽  
Salt Cavern ◽  
Seepage Model

A new seepage model for shale gas reservoir and productivity analysis of fractured well

Fuel ◽  
2014 ◽  
Vol 124 ◽  
pp. 232-240 ◽  
Author(s):  
Jia Deng ◽  
Weiyao Zhu ◽  
Qian Ma
Keyword(s):  
Shale Gas ◽  
Productivity Analysis ◽  
Gas Reservoir ◽  
Shale Gas Reservoir ◽  
Seepage Model ◽  
Fractured Well

scholarly journals The Seepage Model Considering Liquid/Solid Interaction in Confined Nanoscale Pores

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-14
Author(s):  
Xiaona Cui ◽  
Erlong Yang ◽  
Kaoping Song ◽  
Yuming Wang
Keyword(s):  
Solid Wall ◽  
Pore Wall ◽  
Interaction Coefficient ◽  
Two Dimensions ◽  
Navier Stokes ◽  
Confined Space ◽  
Navier Stokes Equation ◽  
Capillary Radius ◽  
Seepage Model ◽  
Shale Reservoirs

Different from conventional reservoirs, nanoscale pores and fractures are dominant in tight or shale reservoirs. The flow behaviors of hydrocarbons in nanopores (called “confined space”) are more complex than that of bulk spaces. The interaction between liquid hydrocarbons and solid pore wall cannot be neglected. The viscosity formula which is varied with the pore diameter and interaction coefficient of liquids and solids in confined nanopores has been introduced in this paper to describe the interaction effects of hydrocarbons and pore walls. Based on the Navier-Stokes equation, the governing equation considered liquid/solid effect in two dimensions has been established, and approximate theoretical solutions to the governing equations have been achieved after mathematic simplification. By introducing the vortex equation, the complex numerical seepage model has been discretized and solved. Numerical results show that the radial velocity distribution near the solid wall has an obvious change when considering the liquid/solid interaction. The results consist well with that approximate mathematical solution. And when the capillary radius is smaller, the liquid and solid interaction coefficient n is greater. The liquid and solid interaction obviously cannot be neglected in the seepage model if the capillary radius is small than 50 nm when n>0.1. The numerical model has also been further validated by two types of nanopore flow tests: from pore to throat and inversely from throat to pore. There is no big difference in flow regularity of throat to pore model considering when liquid/solid interaction or not, whereas the liquid/solid interaction of pore to throat model totally cannot be overlooked.

scholarly journals Prediction of water breakthrough time in horizontal Wells in edge water condensate gas reservoirs

2020 ◽  
Vol 213 ◽  
pp. 02009
Author(s):  
Quan Hua Huang ◽  
Xing Yu Lin
Keyword(s):  
Horizontal Well ◽  
Negative Impact ◽  
Horizontal Wells ◽  
Breakthrough Time ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Water Breakthrough ◽  
Calculation Results ◽  
Seepage Model ◽  
Reasonable Prediction

Horizontal Wells are often used to develop condensate gas reservoirs. When there is edge water in the gas reservoir, it will have a negative impact on the production of natural gas. Therefore, reasonable prediction of its water breakthrough time is of great significance for the efficient development of condensate gas reservoirs.At present, the prediction model of water breakthrough time in horizontal Wells of condensate gas reservoir is not perfect, and there are mainly problems such as incomplete consideration of retrograde condensate pollution and inaccurate determination of horizontal well seepage model. Based on the ellipsoidal horizontal well seepage model, considering the advance of edge water to the bottom of the well and condensate oil to formation, the advance of edge water is divided into two processes. The time when the first water molecule reaches the bottom of the well when the edge water tongue enters is deduced, that is, the time of edge water breakthrough in condensate gas reservoir.The calculation results show that the relative error of water breakthrough time considering retrograde condensate pollution is less than that without consideration, with a higher accuracy. The example error is less than 2%, which can be effectively applied to the development of edge water gas reservoir.

Investigation on multi-scale pore seepage model of shale gas reservoir considering diffusion and slippage effect

2020 ◽  
Vol 24 (11) ◽  
Author(s):  
LiJuan Jiang ◽  
HongGuang Sun ◽  
Shuai Yang ◽  
Yong Zhang ◽  
Han Xu
Keyword(s):  
Shale Gas ◽  
Gas Reservoir ◽  
Multi Scale ◽  
Shale Gas Reservoir ◽  
Slippage Effect ◽  
Seepage Model

Experimental Study on Seepage Model of Rubber-Plastic Porous Tube

2011 ◽  
Vol 314-316 ◽  
pp. 311-314
Author(s):  
Qi Dong Chen ◽  
Chun Yan He ◽  
Tao Meng
Keyword(s):  
Experimental Study ◽  
Drip Irrigation ◽  
Theoretical Basis ◽  
Darcy Law ◽  
Porous Tube ◽  
Actual Application ◽  
Material Characteristics ◽  
Seepage Model ◽  
Seepage Law

This paper analyses seepage model of rubber-plastic porous tube by the Darcy law based on its material characteristics. Integrating seepage examinations the seepage law of porous tube was found ,providing theoretical basis for actual application of rubber-plastic porous tube in drip irrigation、aeration and so on .

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