Well Performance Analysis using 4D Seismic

2009 ◽  
Author(s):  
Michael Nickel ◽  
Lars Sonneland
Keyword(s):  
Performance Analysis ◽  
Well Performance ◽  
4D Seismic

scholarly journals Step-drawdown tests in exploitation wells for thermal and mineral water – Case study from Slovenia

Geologija ◽  
2020 ◽  
Vol 63 (2) ◽  
pp. 281-294
Author(s):  
Luka Serianz ◽  
Nina Rman ◽  
Mihael Brenčič
Keyword(s):  
Performance Analysis ◽  
Production Rate ◽  
Test Performance ◽  
Mineral Water ◽  
Approximate Equation ◽  
Graphical Analysis ◽  
Well Performance ◽  
Water Wells ◽  
Technical Status ◽  
Maximum Production Rate

A comparative analysis of step-drawdown tests was performed in order to estimate the well performance in Slovenian thermal and mineral water wells. Tests were performed in 30 wells, each having its own maximum production rate determined in the concession decrees. The main focus of well performance analysis, using graphical analysis of the Jacob approximate equation, was to estimate the adequacy of the wells production rate as well as to identify possible changes in the technical status of the wells over years. 5 of total 30 wells were not included in the analysis due to technical issues during test performance. Well performance analysis includes the calculation of nonlinear well losses related to turbulent flow and linear head loss (aquifer and well) assumed to be related to laminar flow. Results indicate that the ratios between nonlinear well losses and linear head (well and aquifer) losses, in this paper referred as laminar losses, are from 6.9 % to 97.4 %. Laminar losses parameter suggests, all investigated wells were classified with either good (11 wells), medium (7 wells) or poor (7 wells) performance. The addressed analysis represents a very important basis for further thermal and mineral water extraction, e.g. optimizing the maximum allowed production rate as granted in concession decrees and diagnose potential changes in the technical status of each well

Advanced Well Performance Analysis and Monitoring on Al Shaheen Field

2014 ◽  
Author(s):  
Denis Malakhov ◽  
Michael Gunningham ◽  
Abdulla Al-sadah ◽  
Abdulla Al-Suwaidi
Keyword(s):  
Performance Analysis ◽  
Well Performance

A Compositional Rescaled Exponential Model for Multiphase-Production-Performance Analysis of Boundary-Dominated Gas/Condensate Reservoirs

SPE Journal ◽  
2018 ◽  
Vol 24 (02) ◽  
pp. 618-646
Author(s):  
Ryan Will ◽  
Qian Sun ◽  
Luis F. Ayala
Keyword(s):  
Performance Analysis ◽  
Numerical Models ◽  
Compositional Analysis ◽  
Gas Condensate ◽  
Production Performance ◽  
Analytical Models ◽  
Reservoir Modeling ◽  
Well Performance ◽  
Reservoir Performance ◽  
Hydrocarbon Reservoir

Summary Hydrocarbon-reservoir-performance forecasting is an integral component of the resource-development chain and is typically accomplished using reservoir modeling, by means of either numerical or analytical methods. Although complex numerical models provide rigorous means of capturing and predicting reservoir behavior, reservoir engineers also rely on simpler analytical models to analyze well performance and estimate reserves when uncertainties exist. Arps (1945) empirically demonstrated that certain reservoirs might decline according to simple, exponential, hyperbolic, or harmonic relationships; such behavior, however, does not extend to more-complex scenarios, such as multiphase-reservoir depletion. Because of this limitation, an important research area for many years has been to transform the equations governing flow through porous media in such a way as to express complex reservoir performance in terms of closed analytical forms. In this work, we demonstrate that rigorous compositional analysis can be coupled with analytical well-performance estimations for reservoirs with complex fluid systems, and that the molar decline of individual hydrocarbon-fluid fractions can be expressed in terms of rescaled exponential equations for well-performance analysis. This work demonstrates that, by the introduction of a new partial-pseudopressure variable, it is possible to predict the decline behavior of individual fluid constituents of a variety of gas/condensate-reservoir systems characterized by widely varying richness and complex multiphase-flow scenarios. A new four-region-flow model is proposed and validated to implement gas/condensate-deliverability calculations at late times during variable-bottomhole-pressure (BHP) production. Five case studies are presented to support each of the model capabilities stated previously and to validate the use of liquid-analog rescaled exponentials for the prediction of production-decline behavior for each of the hydrocarbon species.

Production Performance Analysis of Volga-Ural Mature Waterflood with PRIME Diagnostic Metrics

2021 ◽  
Author(s):  
Artur Mihailovich Aslanyan ◽  
Bulat Galievich Ganiev ◽  
Azat Abuzarovich Lutfullin ◽  
Ildar Zufarovich Farkhutdinov ◽  
Marat Yurievich Garnyshev ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Production Performance ◽  
Diagnostic Tools ◽  
Practical Case ◽  
Well Performance ◽  
Summary Table ◽  
Main Challenge ◽  
Production History ◽  
Infill Drilling ◽  
Production Trend

Abstract The paper presents a practical case of production performance analysis at one of the mature waterflood oil fields located at the Volga-Ural oil basin with a large number of wells. It is a big challenge to analyse such a large production history and requires a systematic approach. The main production complication is quite common for mature waterflood projects and includes non-uniform sweep, complicated by thief injection and thief water production. The main challenge is to locate the misperforming wells and address their complications. With the particular asset, the conventional single production analysis techniques (oil production trend, watercut trend, reservoir and bottom-hole pressure trend, productivity trend, conventional pressure build-up surveys and production logging) in the vast majority of cases were not capable of qualifying the well performance and assessing of remaining reserves status. The performance analysis of such an asset should be enhanced with new diagnostic tools and modern methods of data integration. The current study has made a choice in favor of using a PRIME analysis which is multi-parametric analytical workflow based on a set of conventional and non-conventional diagnostic metrics. The most effective diagnostics in this study have happened to be those are based on 3D dynamic micro-models, which are auto-generated from the reservoir data logs. PRIME also provided useful insights on well performance, formation properties and the current conditions of drained reserves which helped to select the candidates for infill drilling, pressure maintenance, workovers, production target adjustments and additional surveillance. The paper illustrates the entire PRIME workflow, starting from the top-level field data analysis, all the way to generating a summary table containing well diagnostics, justifications and recommendations.

Combined Production Logging, Transient Testing, and Well-Performance Analysis

1998 ◽  
Author(s):  
C.S. Kabir ◽  
S.F. Hoadley ◽  
Q. Al-Dashti ◽  
D. Kamal ◽  
A.R. Hasan ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Well Performance

scholarly journals Practical Considerations for Well Performance Analysis and Forecasting in Shale Plays

2016 ◽  
Vol 9 (1) ◽  
pp. 107-136
Author(s):  
D. Ilk ◽  
T. A. Blasingame ◽  
O. Houzé
Keyword(s):  
Performance Analysis ◽  
Primary Sources ◽  
Low Permeability ◽  
Well Performance ◽  
Reservoir Properties ◽  
Considerable Uncertainty ◽  
Nano Scale ◽  
Macro Scale ◽  
Pressure Stress ◽  
Stress Dependent

Analysis and forecasting of well performance data in unconventional reservoirs is and will likely remain problematic as there is considerable uncertainty related to our current lack of understanding of the fluid flow phenomenon in low/ultra-low permeability reservoir systems.There are many unknowns which are the primary sources of the uncertainty on production performance.To name a few, these can be stated as the link between flow in nano scale and macro scale, effect of natural fractures and stress fields/geomechanics, pressure/stress dependent dynamic reservoir properties (e.g., permeability), Pressure-volume-temperature (PVT) properties at nano scale, extent of drainage area, etc. Recently, a great amount of research has been performed to understand and relate these issues to well performance analysis and forecasting, but still no conclusive answer has been provided.The objective of this paper is to briefly discuss the specifics of flow in low permeability systems and models to represent well performance then present a methodology to analyze and forecast production data.

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