A novel well test model for fractured vuggy carbonate reservoirs with the vertical bead-on-a-string structure

2021 ◽  
Vol 196 ◽  
pp. 107938
Author(s):  
Qingyu Li ◽  
Xin Du ◽  
Qingjun Tang ◽  
Yandong Xu ◽  
Peichao Li ◽  
...  
Keyword(s):  
Carbonate Reservoirs ◽  
Test Model ◽  
Well Test ◽  
String Structure ◽  
Well Test Model

Pressure Transient Analysis for Fracture-Cavity Carbonate Reservoirs with Large Scale Fractures-Caves in Series Connection

2021 ◽  
pp. 1-20
Author(s):  
Cuiqiao Xing ◽  
Hongjun Yin ◽  
Hongfei Yuan ◽  
Jing Fu ◽  
Guohan Xu
Keyword(s):  
Transient Analysis ◽  
Carbonate Reservoir ◽  
Carbonate Reservoirs ◽  
Test Model ◽  
Well Test ◽  
Analysis Model ◽  
Pressure Transient Analysis ◽  
Linear Flow ◽  
Pressure Transient ◽  
Well Test Model

Abstract Fractured vuggy carbonate reservoirs are highly heterogeneous and non-continuous, and contains not only erosion pores and fractures but also the vugs. Unfortunately, the current well test model cannot be used to analyze fractured-vuggy carbonate reservoirs, due to the limitations of actual geological characteristics. To solve the above-mentioned problem, a pressure transient analysis model for fracture-cavity carbonate reservoir with radial composite reservoir that the series multi-sacle fractures and caves exist and dual-porosity medium (fracture and erosion pore) is established in this paper, which is suitable for fractured vuggy reservoirs. Laplace transformation is used to alter and solve the mathematical model. The main fractures' linear flow and the radial flow of caves drainage area are solved by coupling. The pressure-transient curves of the bottomhole have been obtained with the numerical inversion algorithms. The typical curves for well test model which has been established are drawn, and flow periods are analyzed. The sensitivity analysis for different parameters is analyzed. The variation characteristic of typical curves is by the theoretical analysis. With the increasing of fracture length, the time of linear flow is increased. While the cave radius is the bigger, the convex and concave of the curve is the larger. As a field example, actual test data is analyzed by the established model. An efficient well test analysis model is developed, and it can be used to interpret the actual pressure data for fracture-cavity carbonate reservoirs.

scholarly journals Numerical well test model for caved carbonate reservoirs and its application in Tarim Basin, China

2018 ◽  
Vol 161 ◽  
pp. 611-624 ◽  
Author(s):  
Yi-Zhao Wan ◽  
Yue-Wu Liu ◽  
Fang-Fang Chen ◽  
Neng-You Wu ◽  
Gao-Wei Hu
Keyword(s):  
Tarim Basin ◽  
Carbonate Reservoirs ◽  
Test Model ◽  
Well Test ◽  
Numerical Well Test ◽  
Well Test Model

Interference well-test model for vertical well with double-segment fracture in a multi-well system

2019 ◽  
Vol 183 ◽  
pp. 106412 ◽  
Author(s):  
Jiazheng Qin ◽  
Shiqing Cheng ◽  
Peng Li ◽  
Youwei He ◽  
Xin Lu ◽  
...  
Keyword(s):  
Test Model ◽  
Well Test ◽  
Vertical Well ◽  
Well Test Model

scholarly journals Fracture Network Numerical Well Test Model Based on the Discrete-fracture Model

2015 ◽  
Vol 126 ◽  
pp. 512-516
Author(s):  
Yizhao Wan ◽  
Yuewu Liu ◽  
Weiping Ouyang ◽  
Congcong Niu ◽  
Guofeng Han ◽  
...  
Keyword(s):  
Fracture Network ◽  
Fracture Model ◽  
Test Model ◽  
Well Test ◽  
Discrete Fracture Model ◽  
Model Based ◽  
Discrete Fracture ◽  
Numerical Well Test ◽  
Well Test Model

scholarly journals Pressure-Transient Behavior in a Multilayered Polymer Flooding Reservoir

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Jianping Xu ◽  
Daolun Li
Keyword(s):  
Transient Behavior ◽  
Polymer Flooding ◽  
Late Time ◽  
Test Model ◽  
Well Test ◽  
Flow Rates ◽  
Wellbore Storage ◽  
Layer Flow ◽  
Stable Flow ◽  
Well Test Model

A new well-test model is presented for unsteady flow in multizone with crossflow layers in non-Newtonian polymer flooding reservoir by utilizing the supposition of semipermeable wall and combining it with the first approximation of layered stable flow rates, and the effects of wellbore storage and skin were considered in this model and proposed the analytical solutions in Laplace space for the cases of infinite-acting and bounded systems. Finally, the stable layer flow rates are provided for commingled system and crossflow system in late-time radial flow periods.

A well-test model for gas hydrate dissociation considering a dynamic interface

Fuel ◽  
2022 ◽  
Vol 314 ◽  
pp. 123053
Author(s):  
Zhiming Chen ◽  
Dexuan Li ◽  
Shaoqi Zhang ◽  
Xinwei Liao ◽  
Biao Zhou ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Test Model ◽  
Well Test ◽  
Hydrate Dissociation ◽  
Dynamic Interface ◽  
Well Test Model
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