Compaction in Media with Inner Boundaries and Application to Oil-Gas Geophysics Problems

Position of compaction poroviscous media

References

Compaction can take place in liquefied grounds, marshes, silts, running sands and in numerous technological processes involving liquid and paste-like mixes and colloid solutions, whenever both low- and high-viscosity phases are present. Such mixes are used in the chemical, petrochemical, biochemical and food-processing industries involving their mixing and processing. Similar processes can arise during the movement of liquid multiphase mixes through pipelines.

Gigantic tailings ponds form during the development of bituminous sands with the help of solutions containing surfactants. These ponds contain colloid solutions of hydrocarbons that are difficult to be recultivated. Sedimentation and consolidation of colloidal structures in the ponds are lasting for decades. Ecological problems restrict the potential of bitumen extraction with the help of such technologies. Colloidal structures form a coherent skeleton through which water flows.

Sedimentation and consolidation processes in vessel with impermeable bottom

Sedimentation and consolidation
processes in vessel with
permeable bottom

Compaction equation

1. As distinct from equations of fluid hydrodynamics, elasticity, poroelasticity and dynamics of suspensions, compaction equations of motion contain the intrinsic length of compaction

Material functions for viscosity and
permeability

External boundaries

"Internal boundaries (arising and..."

1-D model

The geological model of Bazhen
oil-bearing formation

Scheme of geological
model

Arising of compaction in zones I and II

Model of concretion

Continuous circle in poroviscous medium

Porous circle in poroviscous medium

The main result of this model

Consequence from this model

Movement of a Mud Mixture through a Mud Volcano Channel

Slide 23

The Wave Regime in a Magma Floating up under Mid-Ocean Ridges

Ascending mantle flows under
oceanic lithosphere