Insight Gained From Experimental Gas-Cycling Eor in the Unconventional Montney and Duvernay Formations

2020 ◽  
Author(s):  
F. Brent Thomas ◽  
Michael Piwowar ◽  
Mehdi Noroozi ◽  
William Gibb ◽  
Juan Marin ◽  
...  
Keyword(s):  
Gas Cycling

Realistic K Values of C7+ Hydrocarbons for Calculating Oil Vaporization During Gas Cycling at High Pressures

1969 ◽  
Vol 21 (07) ◽  
pp. 901-915 ◽  
Author(s):  
Alton B. Cook ◽  
C.J. Walker ◽  
George B. Spencer
Keyword(s):  
High Pressures ◽  
Gas Cycling

Well Placement and Rate Optimization for Gas Cycling in Gas Condensate Reservoirs

2015 ◽  
Author(s):  
Mohammed Abdul Qadeer Siddiqui ◽  
Sami Alnuaim ◽  
Rizwan Ahmed Khan
Keyword(s):  
Gas Condensate ◽  
Well Placement ◽  
Gas Condensate Reservoirs ◽  
Rate Optimization ◽  
Gas Cycling

Kaybob South - Reservoir Simulation of a Gas Cycling Project with Bottom Water Drive

1970 ◽  
Vol 22 (04) ◽  
pp. 481-492
Author(s):  
M.B. Field ◽  
J.W. Givens ◽  
D.S. Paxman
Keyword(s):  
Reservoir Simulation ◽  
Bottom Water ◽  
Gas Cycling

A Numerical Simulation of Kaybob South Gas Cycling Projects

1971 ◽  
Vol 23 (10) ◽  
pp. 1253-1262 ◽  
Author(s):  
M.B. Field ◽  
I.M. Wytrychowski ◽  
J.K. Patterson
Keyword(s):  
Numerical Simulation ◽  
Gas Cycling

Simulation of Gas Cycling Using a Beta Model

1995 ◽  
Author(s):  
F.M. Guehria ◽  
R.S. May ◽  
T.E. Baiar
Keyword(s):  
Gas Cycling

Compositional Simulation of a Gas-Cycling Project, Bonnie Glen D-3A Pool, Alberta, Canada

1974 ◽  
Vol 26 (11) ◽  
pp. 1285-1294
Author(s):  
Fred R. Thompson ◽  
A. Richard Thachuk
Keyword(s):  
Compositional Simulation ◽  
Gas Cycling

Stability of Gas Injection Using Lateral Wells in Layered Oil Reservoirs

2007 ◽  
Vol 18-19 ◽  
pp. 271-276
Author(s):  
E. Steve Adewole ◽  
B.M. Rai
Keyword(s):  
Pressure Distribution ◽  
Gas Injection ◽  
Oil Production ◽  
Bottom Layer ◽  
Oil Reservoirs ◽  
Mobility Ratio ◽  
Fluid Velocities ◽  
The Stability ◽  
Gas Cycling ◽  
Gas Properties

The stability of gas injection in a layered reservoir drilled with lateral wells, is studied using a generalized pressure distribution-dependent mobility ratio expression. Stable injection guarantees clean oil production. The mobility ratio compared layers’ fluid velocities across a common permeable interface. Studies were based on injected gas compressibilities and viscosities only. Results show that injection stability is affected by (1) injected gas properties, and (2) injection layer; i.e., whether gas cycling (bottom layer injection) or gas injection (top layer injection). Gas cycling tends to exhibit more instability than gas injection operation.

Unsteady-State Distributions of Fluid Compositions in Two-Phase Oil Reservoirs Undergoing Gas Injection

1967 ◽  
Vol 7 (01) ◽  
pp. 61-74 ◽  
Author(s):  
Robert C. McFarlane ◽  
T.D. Mueller ◽  
F.G. Miller
Keyword(s):  
Oil Recovery ◽  
High Speed ◽  
Gas Injection ◽  
Gas Storage ◽  
Oil Reservoirs ◽  
Oil Reservoir ◽  
Two Phase ◽  
Secondary Recovery ◽  
Compositional Effects ◽  
Gas Cycling

Abstract During the process of gas storage in pressure-depleted oil reservoirs, it has been observed that in some instances additional liquid oil is recovered and that the composition of the storage gas is materially altered. A mathematical study was made of the dynamic behavior of such a depleted oil reservoir undergoing gas injection. The important variable considered in this study, not included in previously published work, was that of compositional effects on the phase behavior of two-phase flow. Pressure, saturation and component composition profiles were developed for a linear, horizontal and homogeneous porous medium containing oil and gas but undergoing dry gas injection. Special new techniques were developed to overcome the problems of numerical smoothing which arise in the solution of the equations representing such systems. The method of solution includes the development of partial differential equations describing the behavior of the system, representing these equations by finite difference approximations, making certain simplifying assumptions and, finally, applying methods of numerical analysis with the aid of a high-speed digital computer. In an example calculation, results using the mathematical model are compared with field observations made on a gas storage project in Clay County, Tex. This field project involved a depleted oil reservoir used' for gas storage and gas cycling purposes. As a result of these processes, the reservoir yielded substantial amounts of secondary oil, both in the form of stock tank oil and as vaporized products in the produced gas. The methods derived in this study may be applied to a variety of oil reservoir problems which are dependent on compositional effects. INTRODUCTION In recent years the number of oil reservoirs being used for gas storage purposes has increased greatly, and there has been at least one published account of additional oil recovery resulting from gas cycling a depleted oil reservoir after repressuring with dry gas for storage purposes. Additional oil recovery from oil reservoirs resulting from gas storage operations could become an important secondary recovery process. This is especially true since the use of natural gas in large metropolitan areas continues to increase and more gas storage volume near these areas is needed. These facts provided the motivation for the work reported here. This paper reports on a study of the inter-relations of composition, saturation and pressure changes which occur when hydrocarbon gas is injected into an oil reservoir system. From an understanding of the process, prediction methods may be developed for use in forecasting the secondary recovery products from gas storage operations in oil reservoirs and, consequently, .the economics of such projects can be developed.

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