Evaluation of petrophysical heterogeneity of oil-gas reservoirs according to the data of geophysical studies of wells (Guneshly deposit as an example)
Journal Title: Геофизический журнал - Year 2017, Vol 39, Issue 2
Abstract
Investigations of the character of spatial variability of petrophysical properties of rocks, i. e. of their macro- and micro-heterogeneity are of special importance because they control the degree of saturation with fluids and intensity of fluid dynamics and are widely used for both calculation of resources and compiling the projects of development of oil-gas deposits. The article gives an evaluation of geological heterogeneity of rocks-collectors applying the data of geophysical studies of wells by the example of interruption suite (IS) of Guneshli deposit, which is the main oil-bearing object by the amount of its resources. A suite is represented by alternation of coarse- and medium-grained sands, sandstones and siltstones with thin argillaceous layers. The main parameters of macro-geterogeneity have been given by blocks in the whole IS, which were obtained by wells of the initial period of development: partitioning (the number of layers), thickness of one layer and overall thickness saturated with oil. In order to study heterogeneity of rocks-collectors applying the data of GSW relative amplitude of anomaly was chosen, which characterizes lithological and filtration-capacitive properties of rocks. Relationships of incipient yields of wells and coefficients of displacement of oil with parameters of heterogeneity of the layer-collector have been obtained. Effect of heterogeneity has been shown for factors of exhaustion of oil from the deposit. The studies conducted allowed to reveal the zones with better filtration-capacitive properties capable to be used for more objective rating of oil resources and the choice of optimal regime of development.
Authors and Affiliations
A. A. Feyzullayev, V. N. Lunina, G. T. Akhmedova
Keywords
Related Articles
- EP ID EP198094
- DOI 10.24028/gzh.0203-3100.v39i2.2017.97380
- Views 70
- Downloads 0
The experience of comparing the variations of the induction vector in magnetically conjugate points
Processing was performed and graphs of induction vector change were obtained from 1991—2005 to 2014 on 12 pairs of magnetically conjugated observatories located on all continents and some islands in the geomagnetic latit...
Properties of acoustic axes in triclinic media
We developed a method of obtaining relationships that describe the position of the acoustic axes in a triclinic medium and the dependencies between them. It is proved that these relations are linearly independent in the...
Magnetic declination of the territory of Ukraine: the results of observations and calculations
A technology is proposed for calculating the strength and angular components of the vector of the induction of the Earth's magnetic field. The technology is based on the development of a three-dimensional model of the ea...
Few words about Boris Paton
Few words about Boris Paton
Commentary on the article by H.H. Guliyev "Analysis of result of interpretation of elastic parameters of solid core of the Earth from the standpoint of current geomechanics"
Commentary on the article by H.H. Guliyev "Analysis of result of interpretation of elastic parameters of solid core of the Earth from the standpoint of current geomechanics"