Next Article in Journal
A New Model for Estimating the Diffuse Fraction of Solar Irradiance for Photovoltaic System Simulations
Next Article in Special Issue
Study of the Effect of Clay Particles on Low Salinity Water Injection in Sandstone Reservoirs
Previous Article in Journal
Sectoral Electricity Consumption and Economic Growth: The Time Difference Case of China, 2006–2015
Previous Article in Special Issue
Investigation of the Flow Characteristics of Methane Hydrate Slurries with Low Flow Rates
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Energies 2017, 10(2), 250; doi:10.3390/en10020250

Production Characteristics with Different Superimposed Modes Using Variogram: A Case Study of a Super-Giant Carbonate Reservoir in the Middle East

1
Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
2
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Academic Editor: Alireza Bahadori
Received: 30 August 2016 / Revised: 15 January 2017 / Accepted: 6 February 2017 / Published: 18 February 2017
(This article belongs to the Special Issue Oil and Gas Engineering)
View Full-Text   |   Download PDF [3235 KB, uploaded 18 February 2017]   |  

Abstract

Heterogeneity of permeability is an important factor affecting the production of a carbonate reservoir. How to correctly characterize the heterogeneity of permeability has become a key issue for carbonate reservoir development. In this study, the reservoirs were categorized into four superimposed modes based on the actual logging data from a super-giant heterogeneous carbonate reservoir in the Middle East. A modified permeability formula in terms of the variogram method was presented to reflect the heterogeneity of the reservoirs. Furthermore, the models of oil production and water cut were established and the analytical solutions were obtained. The calculation results show that the present model can predict the productivity of wells with different heterogeneous layers more accurately and rapidly. The larger the varigoram value, the stronger the heterogeneity of the reservoirs, and the faster the decline of production owing to a quicker reduction of formation pressure. With the increase in variogram value, the relative permeability of the oil phase is smaller and the water phase larger, and the water cut becomes larger. This study has provided a quick and reasonable prediction model for heterogeneous reservoir. View Full-Text
Keywords: carbonate reservoir; production decline; superimposed mode; variogram; water cut carbonate reservoir; production decline; superimposed mode; variogram; water cut
Figures

Figure 1a

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wei, C.; Song, H.; Li, Y.; Zhang, Q.; Song, B.; Wang, J. Production Characteristics with Different Superimposed Modes Using Variogram: A Case Study of a Super-Giant Carbonate Reservoir in the Middle East. Energies 2017, 10, 250.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top