Petroleum Terms Explained - 1

Permeability coefficient permeability max-mean ratio
The ratio of maximum permeability to average permeability in a layer, also known as the non-homogeneous coefficient.
Four-property relationship
Refers to lithology, physical properties, oiliness and electrical relations.
Heterogeneous innerbeded heterogeneity
Heterogeneity within a single oil reservoir, typically a vertical combination of rocks, refers to the degree of permeability differential and interlayer distribution.
Interlayer heterogeneity
Refers to the heterogeneity between the oil layer and the oil layer.
Planar heterogeneity
Mainly refers to the change of the oil sand body in the plane, mainly including the change of oil layer physical properties and lithology and lithofacies.
Barrier layer
The rock layer that acts as a baffle for fluid flow. The interlayer in the reservoir of the clastic rock is dominated by argillaceous rocks, but also includes a small amount of other lithologies.
Interlayer interbed
There are some discrete thin layers in the single sand layer, such as shale, argillaceous, silty sand, siliceous, calcium, etc., which are called interlayers, and it directly affects the vertical permeability of the single sand layer.
Clay mineral
The minerals that make up clay rocks include kaolinite, montmorillonite, illite, chlorite, etc. These clay minerals often fill in the pores of the reservoir and its existence has a great influence on the physical properties of the reservoir.
Reservoir sensitivity formation sensitivity
All oil wells are subject to varying degrees of damage, and the degree of damage to the reservoir is the sensitivity of the reservoir.
Sand Body Connectivity
The degree to which the sand bodies of various causes communicate with each other in the vertical direction and in the plane.
Seismic exploration
Artificial waves are used to excite seismic waves. By studying the propagation characteristics of seismic waves in the strata, underground geologic structures are identified.
A geophysical method for the exploration and development of oil and gas fields to predict lateral changes in reservoirs.
2D seismic 2D-seismic
The seismic waves are stimulated and received on a single observation line to obtain the characteristics of the underground geological body in a two-dimensional space.
3D seismic 3D-seismic
Excite and receive seismic waves on an observation surface to obtain features of the underground geological body in three-dimensional space.
4D seismic 4D-seismic
Repetitive three-dimensional seismic observations were made at the same location at regular intervals, and reservoir monitoring was conducted by studying the differences in the two-dimensional three-dimensional seismic observations.
High resolution seismic
Broad-band observations are used in the field and high-fidelity seismic exploration methods are used indoors.
Development of seismic development seismic
Using seismic technology, combined with drilling, logging, analysis and other multi-disciplinary data, new technologies for describing and dynamically monitoring oil and gas reservoirs were developed in the early stages of development of oil and gas fields.
Horizontal overlapping section
The seismic profile obtained only after horizontal superposition processing without offset homing processing.
Stacked cross section stacked-migrated section
First horizontal superposition processing, and then the seismic profile obtained by offset homing processing.
Offset Overlay Section migrated-stacked section
Offset homing is performed first, and then the seismic profile obtained by superposition of common depth points is performed.