Paper Information

Journal:   IRANIAN INTERNATIONAL JOURNAL OF SCIENCE   Fall 2004 , Volume 5 , Number 2; Page(s) 203 To 221.
 
Paper: 

PETROPHYSICAL EVALUATION AND DETERMINATION OF ROCK TYPES IN A CARBONATE RESERVOIR IN SW IRAN WITH INTERPRETATION OF PETROGRAPHY AND GEOPHYSICAL WELL LOGS

 
 
Author(s):  BEIRANVAND B., KAMALI M.R.
 
* 
 
Abstract: 
Reservoir characterization plays a critical role in appraising the economic success of reservoir management and development methods. This study identifies the different rock types that comprise reservoirs, marginal reservoirs and non-reservoirs. Porosity and permeability are the key parameters for identifying the rock types and reservoir characterization. The qualification of these parameters is usually measured directly from cores using conventional core analysis methods, and indirectly using geophysical well logs, well tests, and artificial neural network methods. However, for determination of rock types and reservoir evaluation, in addition to quantity of porosity and permeability we need to determine pore geometry and pore aperture size which are related to grain size, sorting and packing as well as to factors such as the mineralogy and diagenetic history of the reservoir. This paper presents the results of a combination of conventional core analysis, capillary pressure curve characteristics, compressional net stress analysis, thin sections and SEM petrographical investigations integrated with geophysical well logs. A total of 4 different rock types were identified within the reservoir interval, in addition to two types of pore throat, one with a larger flow capacity than the other. The low permeability in non-reservoir rock types is probably related to higher amounts of clay minerals that affect pore throat connectivity and fining the pore throats between the microcrystalline calcites in the reservoir.
 
Keyword(s): PETROPHYSICS, ROCK TYPES, CARBONATE RESERVOIR, IRAN.
 
References: 
  • ندارد
 
  Yearly Visit 48
 
Latest on Blog
Enter SID Blog