【摘 要】
:
Theoretical rock-physical models and experimental measurement in natural organic-rich shale tend to be restricted to specific lithologies and quantity,thus resist generalization.An alternative approac
【机 构】
:
China university of petroleum-Beijing
【出 处】
:
EAGE-SCA International Symposium on Digital Rock Physics and
论文部分内容阅读
Theoretical rock-physical models and experimental measurement in natural organic-rich shale tend to be restricted to specific lithologies and quantity,thus resist generalization.An alternative approach to overcome such challenge is to work with well-controlled analogs where it is possible to accurately quantify desired factors and investigate their effect separately.This study propose a novel hot-pressing technique to create realistic synthetic organic-rich shale that take into account both diagenetic pressure and temperature,for which we design an automatic thermoregulatory and pressure-controlled system.Quartz,calcite,illite powders(more than 4000 mesh)and organic matter as well as the associated ranges of percentage are predesigned for modelling,temperature and pressure were calculated and calibrated based on the buried depth of target shale layer.The model exhibits P-wave and S-wave anisotropy(ε,γ)with magnitude of 23%and 16%,porosity of less than 5%,permeability of less than 0.1mDa,density of more than 2.1g/cc,bulk modules of 15.4Gpa,Young modules of 28.3Gpa,Poissons ratio of 0.194.Furthermore,microstructural features of organic matter and non-organic composition in the synthetic shale by SEM imaging shows similar spatial distribution with natural shale.
其他文献
Carbonate reservoirs hold more than 60%of hydrocarbon resource over the world,but their recovery factors are low and they prove to be challenging reservoirs to understand and operate.It is broadly acc
We present a statistical analysis of CT-scans of core samples and statistical simulation of the images having the same pore-to-skeleton distribution as original scans.The analysis includes estimation
Modeling of rock and the associated properties based on high-resolution tomography of rock samples has made tremendous progress in recent years.
Rock DNA is a novel concept to characterize a reservoir rock.Multi-scale digital rock physics(DRP)has been used extensively in over 200 reservoir rocks spanning from micro-Darcy to Darcy level of perm
Nuclear magnetic resonance(NMR)logging has potential application values in unconventional reservoirs exploration for its directly measuring the information of pore fluids in formation.The tight sandst
The pore spaces of tight sandstone reservoirs have obvious fractal characteristics,therefore their fractal dimensions derived from capillary pressure curves are usually used to quantitatively evaluate
This study applies X-ray CT combined with conventional core analysis to investigate the effect of fractures and vugs on carbonate petrophysical properties on microscopic and core scale.
The two phase fluid distribution is mainly dominated by wettability in rocks where the wetting fluid is always contacting with the pore wall.It can be interpreted by 2D NMR method because in the confi
At present,most of numerical simulation based on digital core only considers the separation of matrix and pore,instead of the mineral components which is very important in the research on pore structu