Please enable JavaScript for this site to function properly.
OnePetro
  • Help
  • About us
  • Contact us
Menu
  • Home
  • Journals
  • Conferences
  • Log in / Register

Log in to your subscription

and
Advanced search Show search help
  • Full text
  • Author
  • Company/Institution
  • Publisher
  • Journal
  • Conference
Boolean operators
This OR that
This AND that
This NOT that
Must include "This" and "That"
This That
Must not include "That"
This -That
"This" is optional
This +That
Exact phrase "This That"
"This That"
Grouping
(this AND that) OR (that AND other)
Specifying fields
publisher:"Publisher Name"
author:(Smith OR Jones)

Compositional Simulation for Effective Reservoir Management: The Brady South Weber Pressure-Maintenance Project

Authors
Peter H. Holst (PHH Engineering Ltd.) | Thomas W. Zadick (Champlin Petroleum Co.)
DOI
https://doi.org/10.2118/9321-PA
Document ID
SPE-9321-PA
Publisher
Society of Petroleum Engineers
Source
Journal of Petroleum Technology
Volume
34
Issue
03
Publication Date
March 1982
Document Type
Journal Paper
Pages
635 - 644
Language
English
ISSN
0149-2136
Copyright
1982. Society of Petroleum Engineers
Disciplines
1.6 Drilling Operations, 5.2 Reservoir Fluid Dynamics, 2.4.3 Sand/Solids Control, 4.1.5 Processing Equipment, 5.1 Reservoir Characterisation, 4.2 Pipelines, Flowlines and Risers, 5.1.2 Faults and Fracture Characterisation, 5.4.3 Gas Cycling, 5.2.1 Phase Behavior and PVT Measurements, 5.5.8 History Matching, 4.1.2 Separation and Treating, 5.4.2 Gas Injection Methods, 5.5 Reservoir Simulation, 1.6.9 Coring, Fishing, 5.6.4 Drillstem/Well Testing, 5.8.8 Gas-condensate reservoirs, 4.6 Natural Gas, 5.8.3 Coal Seam Gas, 5.2.2 Fluid Modeling, Equations of State, 1.2.3 Rock properties
Downloads
0 in the last 30 days
126 since 2007
Show more detail
View rights & permissions
SPE Member Price: USD 12.00
SPE Non-Member Price: USD 35.00

Summary

This paper discusses the problems encountered, the logic used to address their solutions, and the compositional models developed to history match a partial pressure-maintenance project in a rich retrograde gas reservoir. Residue gas from the tailgate of a lean-oil refrigerated plant is being reinjected to optimize condensate recovery.

Since the discovery of the South Weber reservoir in Nov. 1972, several compositional modeling studies were completed to determine the proper plan of development and reservoir management. However, these studies were carried out without the benefit of any producing history. In late 1975 the reservoir was placed on production. A study was begun in March 1978 to develop mathematical models that were consistent in matching observed performance (at this time about 21 % of the original gas in place had been produced). This paper concentrates on that study. To utilize all available data in the history match, compositional models were developed to simulate reservoir performance, tubing flow behavior, and performance of the primary and test separators, the stabilizer, and the plant. These models then were used (1) to update rate-time forecasts under current operations. (2) to investigate the feasibility of infill drilling or changing the flood pattern, and (3) to determine the benefits of changing to nitrogen injection for partial pressure maintenance.

The results of this study demonstrate utility of the compositional simulator to supplement and reinforce measured production data and to test various hypotheses efficiently that might explain observed performance. Furthermore. the study demonstrates that the simulator can be used to predict the sensitivity of the project performance to different reservoir characteristics or various operating scenarios.

Introduction

The Brady South Weber reservoir is in southern Wyoming, 30 miles southeast of Rock Springs. It was discovered in Nov. 1972 with a successful test of the Weber in the Brady Deep Unit Well 1 W. Reservoir fluid analyses of recombined surface samples indicated that the fluid was a very rich retrograde gas. The gas is sour, having about 1.2 % H2S and 34 % CO2. Because of the complex fluid, the formation depth, and the well cost, mathematical modeling has been used throughout the project as a key to effective reservoir management. Table 1 summarizes objectives and major conclusions of previous simulation studies. All these studies were undertaken without the benefit of any producing history in an attempt to identify an optimal exploitation plan. With completion of a lean-oil refrigerated plant, production began in Nov. 1975. The field-wide rate from seven producing wells averaged 34 MMcf/D of primary separator gas and 6.600 B/D of stabilized condensate. Residue gas from the South Weber, the South Nugget, and more recently the North Weber is being reinjected into the South Weber reservoir. An average of 37 MMcf/D of residue gas has been reinjected into six peripheral wells. Cumulative production to Dec. 1979 mas 10 MMbbl, or about 21 % of the original condensate in place. Gas production have been less than predicted in earlier studies. However, six of the seven producing wells have not been fracture stimulated. The initial GOR was lower than reservoir fluid analyses indicated. Increasing GOR's (presumably the result of residue gas breakthrough) were premature at some wells and late at others. On a field-wide basis of GOR vs. cumulative production, the reservoir performed better than predicted. Water production at Wells 1OW and 16W, in the southwest portion of the reservoir. was higher than expected.

JPT

P. 635^

File Size  667 KBNumber of Pages   10
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
    • Issue 12
    • Issue 11
    • Issue 10
    • Issue 09
    • Issue 08
    • Issue 07
    • Issue 06
    • Issue 05
    • Issue 04
    • Issue 03
    • Issue 02
    • Issue 01
Show more

Other Resources

Looking for more? 

Some of the OnePetro partner societies have developed subject- specific wikis that may help.


 


PetroWiki was initially created from the seven volume  Petroleum Engineering Handbook (PEH) published by the  Society of Petroleum Engineers (SPE).








The SEG Wiki is a useful collection of information for working geophysicists, educators, and students in the field of geophysics. The initial content has been derived from : Robert E. Sheriff's Encyclopedic Dictionary of Applied Geophysics, fourth edition.

  • Home
  • Journals
  • Conferences
  • Copyright © SPE All rights reserved
  • About us
  • Contact us
  • Help
  • Terms of use
  • Publishers
  • Content Coverage
  • Privacy
  Administration log in