The Executive Editors of SPE Reservoir Evaluation & Engineering alternate
writing the Executive Summary. This issue's summary is by Erdal Ozkan.
Recently, I looked at the statistics of our graduating class at the Colorado
School of Mines. The placement ratio is 100%, and the average starting salary
is U.S. $69,000, with a generous sign-up bonus. None of our graduates is
looking for a job; on the contrary, we are receiving an increasing number of
requests from the industry for students who might be interested in their open
positions. The situation seems to be the same for other university petroleum
For a long time, we have talked about the aging population of oil-industry
professionals and a potential shortage of new hires. The dreaded problem seems
to be confronting us now. We are required to fill the ranks of the workforce
necessitated by the increased activity and the new horizons of the industry.
To fill entry-level positions, petroleum engineering departments will have to
graduate more engineers. Of course, there will be a time lag until the larger
classes graduate, and the industry will have to deal with the shortage during
What seems to be the more important problem is how to fill up the positions of
the intermediate and highly experienced level of professionals who will have
to retire soon. Based on the current picture, it is not difficult to predict a
period of cross-company transfers and hiking salaries for those who qualify
for more senior positions and will remain in the workforce for a reasonable
period. We can even predict that the future mergers will look at the workforce
as an important asset and, for a change, mergers will not mean layoffs.
In addition to the changing employment trends, the need for new technology is
also becoming a more pressing issue. For some time, the new, cutting-edge
technology development did not receive priority treatment from the industry.
High oil prices and the apparent future challenges of exploring and exploiting
oil and natural gas under more complex conditions are bringing back to the
research its long lost glory. Those of us who remember the days when the
petroleum technology research competed with the research on space and military
technology should welcome this as a sign of a healthy industry that does not
live for short-term goals but looks way into the future and plans to take on
The first paper of this issue, A Fast and Direct Method of Permeability
Measurements on Drill Cuttings, presents a new method to measure the
permeability of drill cuttings. The method does not require specific
laboratory conditioning and takes only a few minutes to implement. The method
provides another quick and inexpensive tool in addition to conventional core
analysis for reservoir characterization.
The next paper, The Role of Cutoffs in Integrated Reservoir Studies,
discusses the role of cutoffs in integrated reservoir studies. It emphasizes
that the quantification of cutoffs should be compatible with the reservoir
mechanism and the methodology used to estimate hydrocarbons in place.
A Model for Changes in Coalbed Permeability During Primary and Enhanced
Methane Recovery describes the implementation of a bidisperse
pore-diffusion model in a coalbed reservoir simulator. To demonstrate the use
of the model, an application to the sub-bituminous Powder Basin coalbed is
The fourth paper, Modeling Coupled Fracture-Matrix Fluid Flow in
Geomechanically Simulated Fracture Networks, is on the numerical
investigation of the effects of coupled fracture-matrix fluid flow on
equivalent permeability. Fracture patterns generated by a
fracture-mechanics-based crack-growth simulator are used to simulate coupled
fracture-matrix fluid flow by a finite-difference simulator.
Application of Stream-Conversion Methods To Generate Compositional Streams
From the Results of a Multimillion-Cell Black-Oil-Simulation Study of the
Shaybah Field illustrates that an EOS-based stream-conversion method used
with detailed multimillion-cell black-oil simulators can be a feasible
approach to generate the compositional rates for the giant Shaybah field.
The sixth paper of this issue, Effects of Formation Damage and High-
Velocity Flow on the Productivity of Perforated Horizontal Wells,
investigates the effects of formation damage and non-Darcy flow on the
performance of perforated horizontal wells. A detailed semianalytical model is
used to obtain the results presented in this paper.
The seventh paper, An Innovative Approach To Integrate Fracture, Well-Test,
and Production Data Into Reservoir Models, presents an approach to
integrate fracture, pressure-transient, and production data into reservoir
description to be used in flow simulation. The utility of the approach is
discussed in an example application to a giant carbonate reservoir in the
Analysis of Interference Tests With Horizontal Wells presents practical
correlations to simplify the analysis of interference tests between two
horizontal wells. The limitations of some of the commonly used approaches are
Finally, A New Model To Obtain Representative Field Relative Permeability
for Reservoirs Produced Under Solution-Gas Drive discusses a novel
approach to calculate representative field relative permeabilities under
solution-gas-drive conditions. The approach is based on a model that
rigorously considers bubble nucleation, phase transfer, and gas displacement.
Overall, we have nine excellent papers in this issue. I hope you enjoy reading
them as much as I did
“Pressure Transient and Decline Curve Behavior in Naturally Fractured
Vuggy Carbonate Reservoirs,” by R. Camacho-Velázquez, M. Vásquez-Cruz, R.
Castrejón-Aivar, and V. Arana-Ortiz, which appeared in the April 2005
issue of SPE Reservoir Evaluation and Engineering magazine, contained several
misprints in Eqs. A-18, A-19, and A-20. The correct equations are printed
here: Equations to come
We apologize for any inconvenience these errors may have caused.