effective porosity वाक्य
उदाहरण वाक्य
मोबाइल
- Often the porosity or effective porosity is used as an upper bound to the specific yield.
- The identification of clay types is also useful for calculating the effective porosity of reservoir rock.
- Log derivation of effective porosity includes CBW as part of the volume of shale ( V sh ).
- ;Effective porosity \ phi _ { e1 } : The sum of all the interconnected pore space.
- In the vast majority of cases, this core analysis and Petroleum Engineering definition of effective porosity equates to total porosity.
- A dramatic example of a core effective porosity vs log effective porosity discrepancy comes from some Greensand reservoirs in Western Australia.
- A dramatic example of a core effective porosity vs log effective porosity discrepancy comes from some Greensand reservoirs in Western Australia.
- However, glauconitic microporosity is measured as part of the effective porosity in core plugs, even if they are humidity dried.
- Log effective porosities calculated at 25 % in some Greensand reservoirs have yielded core analysis effective porosities of 35 % at equivalent depths.
- Log effective porosities calculated at 25 % in some Greensand reservoirs have yielded core analysis effective porosities of 35 % at equivalent depths.
- Specific yield can be close to effective porosity, but there are several subtle things which make this value more complicated than it seems.
- The effective porosity is of great importance in considering the suitability of rocks or sediments as oil or gas reservoirs, or as aquifers.
- However, there is also a concept of closed porosity and effective porosity, i . e ., the pore space accessible to flow.
- The difference is the glauconitic microporosity which contains water at reservoir conditions and is included as part of the Vsh ( non-effective porosity ) by log analysis.
- "' Sonic logging "'is a well logging tool that provides a lithology and rock textures, most notably decreasing with an increasing effective porosity.
- Therefore it is essential to have a core-or at least a good understanding of the geology-before invoking total " vs " effective porosity relationships.
- More importantly for the consideration of effective porosity, though, glauconite grains ( part of the Vsh ) have intra-particular microporous pore space which retains capillary-bound water.
- Although shales have low permeability and low effective porosity, shale gas is usually considered separate from tight gas, which is contained most commonly in sandstone, but sometimes in limestone.
- Porosity that is not considered " effective porosity " includes water bound to clay particles ( known as bound water ) and isolated " vuggy " porosity ( vugs not connected to other pores ).
- In essence, total porosity minus shale water, where solid minerals and the volume of shale ( Vsh ) constitute the matrix ( non-effective porosity ) and the remaining volume constitutes the effective porosity.
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