abercrombie paris mlf crlr gzfk

Clay content of the reservoir rock permeability impairment Saudi Arabia and the capillary pressure and wettability


. Scanning electron microscopy of the same type of core shooting photos of other micro-Jq-~ t out, leaving a hole wall common clay crystals covering film, but the intergranular porosity remains relatively connectivity. Such core permeability is relatively high. Low permeability sandstone micrographs show that the clay crystals have been attached to the sand surface and in the intergranular pore space across. Scanning electron microscope identification emblem that carbonate Yanyan mind that the low percentage of clay is difficult to detect. The use of salt solution to flow test the Saudi sands, after scanning electron microscopy identified that cover the earth revolves on the surface of the sand has been removed and moved to the pore. Part of the opening block formation shown to be attributed to scattered damage reduces the relative permeability of the clay, that the measured permeability and permeability ratio of the initial photos show, Sa [aniya core damage most because they have more of Kat montmorillonite, montmorillonite is the core cause Safaniya higher ion exchange capacity of one of the reasons. Safaniya maximum core damage should be attributed to the fact that the comparison with the Alkhafjj core, they contain a higher proportion of dispersed clay and high anion exchange capacity. Alkhafji cores dispersed clay content of less, which is that they show less decline in the permeability of clay dispersion causes the fluid flow through easily accessible, because they are usually present in the pores. Instead layered clay was less affected. Temperature on relative permeability effects are obvious at higher temperatures, all sandstone core can obtain a higher relative permeability which should be attributed to the temperature of the clay minerals contained in rock characteristics. On a set of water-sensitive permeability of the carbonate Yanyan heart have also been studied. Yanyan heart is not that carbonated water sensitivity. This should be attributed to the following factors: ① the lack of swelling clay (one of the core X-ray diffraction analysis showed that no cores of clay swelling in fact. Only kaolin) {② exist in the minds of carbonate particles by Yanyan tightly adsorbed on the pore surface, this may be attributed to good results and solid core porosity is very low; ③ lack of core chemical reaction. This is because the clay content of carbonate Yanyan lack of heart so that they very little water sensitivity. Obtained from the experimental pH value of output are constant and resistivity of view. The conclusion is very natural. From the experimental data, the heart does not contain carbonate Yanyan montmorillonite, this is the result of foreign oil and gas exploration lg9 years they only receive a lower ion exchange capacity of one of the reasons. Saudi Arabia on different rock surfaces,ralph lauren pas cher, the use of Safanlya crude oil and distilled water at 22 ℃ under the conditions of the contact angle measurements indicate that the equilibrium contact angle of about to 20 hours. Different samples of rock surfaces are hydrophilic. The results show that,abercrombie marseille, Safaniya sandstone core of the largest contact angle. And at 22 ℃ under the conditions, S8faniya marrow core of the contact angle with distilled water added to increase the amount of NaCI and larger. These results suggest that use of NaC1 dissolved in sandstone cores will tuck into the presence of lipophilic as NaCI. In an oil-water interface (inorganic) ion adsorption may cause a layer of pure water,mbt chaussures paris, its thickness and inversely proportional to ion concentration. The results electrostatic effect kicks in, which increases in concentration, surfactant adsorption becomes more pronounced dispersed particles, holes and attached to the bridge-like pore wall in the capillary pressure curve clay showed that the basic difference between the nature of their pore network . Berea sandstone cores of sandstone and Safaniya show low initial pressure and mercury into the sand with dispersed particles of the pressure curve obtained similar values, it implies that the dispersed kaolin particles in the low pore volume under the influence. However, Alkhafji sandstone shape of the curve may indicate that the experiment used three types of sandstone cores lack of bridge-like porous clay. Conclusion Based on the experimental results, the paper obtained the following conclusions t (1) a significant reduction of water penetration can be attributed to the hole wall attached to the clay adsorption and migration. (2) flooding before, the dispersion of clay as the hearts of rock crystal attached to the pore walls symbiosis, after the core has been flooding,abercrombie paris, scattered clay to pore through the pores Tower Bridge mode. (3) pore size, the dispersed kaolin clay attached to the capillary pore pressure curve has a greater impact. (4) exists in aqueous solution of NaCI and a higher proportion of the contact angle will reduce the swelling clay. (5) at higher temperatures, all tests can be high sandstone core penetration. (6) Safaniya Chapter low permeability sandstone, which with its reduced intake of high permeability, a large contact angle, capillary pressure, and the small area under the curve relating to the low clay activity. r Su Zhongqi translated from the Japanese More articles related to topics：


复件 Define a new collection using husky chain

致密碳酸盐储层裂缝特性描述及模拟

Norway statoil in three-dimensional rotary steerable drilling technology, reservoir