Predicting Estimated Ultimate Recovery from Flowing Material Balance Analysis Considering Rock and Connate Water Expansion for Unconventional Gas Reservoirs

2021 ◽  
Author(s):  
Aykut Atadeger ◽  
Mustafa Onur ◽  
Leslie G. Thompson ◽  
Barry A. Ruddick
Keyword(s):  
Material Balance ◽  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Connate Water ◽  
Unconventional Gas Reservoirs ◽  
Balance Analysis ◽  
Flowing Material ◽  
Estimated Ultimate Recovery

scholarly journals Flowing material balance method with adsorbed phase volumes for unconventional gas reservoirs

2019 ◽  
Vol 38 (2) ◽  
pp. 519-532
Author(s):  
Guofeng Han ◽  
Min Liu ◽  
Qi Li
Keyword(s):  
Coalbed Methane ◽  
Gas Adsorption ◽  
Material Balance ◽  
Balance Method ◽  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Adsorbed Phase ◽  
Unconventional Gas Reservoirs ◽  
Flowing Material ◽  
Material Balance Method

This paper presents an improved flowing material balance method for unconventional gas reservoirs. The flowing material balance method is widely used to estimate geological reserves. However, in the case of the unconventional gas reservoirs, such as coalbed methane reservoirs and shale gas reservoirs, the conventional method is inapplicable due to the gas adsorption on the organic pore surface. In this study, a material balance equation considering adsorption phase volume is presented and a new total compressibility is defined. A pseudo-gas reservoir is simulated and the results were compared with the existing formulations. The results show that the proposed formulation can accurately get the geological reserves of adsorbed gas reservoirs. Furthermore, the results also show that the volume of the adsorbed phase has a significant influence on the analysis, and it can only be ignored when the Langmuir volume is negligible.

Flowing Material Balance Analysis and Production Optimization in HPHT Sour Gas Field

2019 ◽  
Author(s):  
Azis Hidayat ◽  
Dwi Hudya Febrianto ◽  
Elisa Wijayanti ◽  
Diniko Nurhajj ◽  
Ahmad Sujai ◽  
...  
Keyword(s):  
Material Balance ◽  
Production Optimization ◽  
Gas Field ◽  
Balance Analysis ◽  
Flowing Material ◽  
Sour Gas

Comparison of fracturing unconventional gas reservoirs using CO2 and water: An experimental study

2021 ◽  
Vol 203 ◽  
pp. 108598
Author(s):  
C.P. Zhang ◽  
P. Cheng ◽  
Z.Y. Ma ◽  
P.G. Ranjith ◽  
J.P. Zhou
Keyword(s):  
Experimental Study ◽  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Unconventional Gas Reservoirs

Prediction of Uncertainty in Exploration of Unconventional Gas Reservoirs

2010 ◽  
Author(s):  
Mohan Gajanan Kelkar ◽  
Kyle Everett Bonney ◽  
Phillip Alan Bonney
Keyword(s):  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Unconventional Gas Reservoirs

A Dynamic Workflow of Well Health Issue Prediction – Sulfur Deposition

2021 ◽  
Author(s):  
Bashirul Haq
Keyword(s):  
Material Balance ◽  
Gas Production ◽  
Health Issue ◽  
Sulfur Deposition ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Actual Performance ◽  
Sulphur Deposition ◽  
Balance Analysis ◽  
Sour Gas

Abstract Sour gas reservoirs are vital sources for natural gas production. Sulphur deposition in the reservoir reduces a considerable amount of gas production due to permeability reduction. Consequently, well health monitoring and early prediction of Sulphur deposition are crucial for effective gas production from a sour gas reservoir. Dynamic gas material balance analysis is a useful technique in calculating gas initially in place utilizing the flowing wellhead or bottom hole pressures and rates during the well's lifetime. The approach did not apply to monitor a producing gas's health well and detect Sulphur deposition. This work aims to (i) modify dynamic gas material balance equation by adding the Sulphur deposition term, (ii) build a model to predict and validate the issue utilizing the modified equation. A unique form of the flowing material balance is developed by including Sulphur residue term. The curve fitting tool and modified flowing gas material balance are applied to predict well-expected behaviour. The variation between expected and actual performance indicates the health issue of a well. Initial, individual components of the model are tested. Then the model is validated with the known values. The workflow is applied to active gas field and correctly detected the health issue. The novel workflow can accurately predict Sulphur evidence. Besides,the workflow can notify the production engineers to take corrective measures about the subject. Keywords: Sulfur deposition, Dynamic gas material balance analysis, Workflow

Numerical Simulation of Low Permeability Unconventional Gas Reservoirs

2014 ◽  
Author(s):  
Yu Didier Ding ◽  
Yu-Shu Wu ◽  
Nicolas Farah ◽  
Cong Wang ◽  
Bernard Bourbiaux
Keyword(s):  
Numerical Simulation ◽  
Low Permeability ◽  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Unconventional Gas Reservoirs
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