1.1.3 Adsorbed residual oil

The collectors containing oil, possess the branched out structure of a pore space and have high values of the specific surface characterised by high adsorptive capacity. In purely hydrophilic breeds inside porovaja the surface is covered by thin solid bed of an aqueous film.

On modern representations of oil it is the suspension solutions which dispersed phase are micelles of the asphaltenes representing solid matters with density to 1,2 g/sm, and a dispersion medium of a-mix of various hydrocarbons.

Composition and properties adsorbed IT depend both on properties of sheet oil, and from properties of a skeleton of breed and character of its saturation.

Polar components natural neftej are surfactants (PEAHENS), oxygen-bearing, nitrogen and sulphur. These of PEAHENS contain both polar, and hydrocarbonaceous components. Polar components (radicals) are adsorbed on vnutriporovoj surfaces [25]. As have shown the numerous experiments some of PEAHENS, containing in natural neftjah, rastvorimy in water and can make through through a shallow layer of water and be adsorbed on a surface of breed [26]. Besides composition of natural oil of the characteristic adsorbed IT depend also from termobaricheskih conditions in layers, mineral composition of a porous medium and composition of sheet waters,

The water originally sating a collector, makes essential impact on adsorption. The more the combined water maintenance, the is less adsorbed resins and asphaltenes on vnutriporovoj surfaces. It is caused by that the part vnutriporovoj surfaces, with the active sites of adsorption located on it, is isolated by water from PEAHENS of natural oil [27].

With other things being equal silicates aspire to adsorb simple organic bases, whereas carbonates the simple organic; acids. It is caused by that silicates routinely have negative charge, forming poorly acid surface in water near to neutral rn whereas carbonates have positive charge, forming poorly basic surfaces. These surfaces will preferably adsorb components of opposite polarity by means of reaction between acid and the basis.

At silicates the surface becomes negatively charged when rn exceeds size 2,4-3,7, and calcites do not become negatively charged while rn does not become more than 8-9,5.

Influences rn ionisation of surface-active organic acids and the bases containing in natural oil.

In systems silicate/oil/water quantivalent cations of metals can reduce solubility PAVov in a solution and promote their adsorption on a surface of minerals. Besides, the quantivalent

2 * ^* 2 ^ "2 ^* 2" ^ 3 |

Cations (Sa, Mg, Si, Ni, Fe) can act as activators PaVov of natural oil.

Quantitatively to yield authentic values adsorbed IT now it is difficult, as adsorbed oil is routinely studied together with residual oil of deadlock pores and partially with film and is capillary-jammed. Presumably adsorbed IT makes 5-15 % [12,29,30].

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A source: Kozhabergenov Murat Mokanovich. Substantiation of effective technologies doizvlechenija residual oil from obvodnennyh layers on an example of XIII horizon of deposit Uzen: Dis.... A Cand.Tech.Sci.: 25.00.17. - M: RGB, 2006. 2006

More on topic 1.1.3 Adsorbed residual oil:

  1. 1.1.4 Film residual oil
  2. 1.1.2 Is capillary-jammed residual oil
  3. 1.1 Kinds of residual oil in zavodnennyh layers
  4. 1.1.6 Residual oil at unstable replacement
  5. 1.2 Quantitative distribution of residual oil on the deposit area
  6. 1.3 Distribution of residual oil of water in emptiness of hydrophilic and hydrophobic collectors
  7. 1.1.5 Residual oil in deadlock pores and micronon-uniform zones
  8. 2.7 Bases of technology doizvlechenija residual oil from obvodnennyh chinks
  9. 2.6. Laboratory researches of possibility doizvlechenija micro-residual oil after zavodnenija for conditions of layers of XIII horizon of deposit Uzen
  11. Kozhabergenov Murat Mokanovich. the Substantiation of effective technologies doizvlechenija residual oil from obvodnennyh layers on an example of XIII horizon of deposit Uzen: Dis.... A Cand.Tech.Sci.: 25.00.17. - M: RGB,, 2006 2006
  12. temperature dependences of residual polarisation
  13. residual voltages in a blanket of details at PPD
  14. 3.2. Residual voltages as a result of surface deformation
  15. residual voltages as a result of surface heat
  16. influences of an operating time on character of change of residual voltages in a blanket
  17. an estimation of exactitude of the forecast of theoretical model of shaping of residual voltages
  19. the international residual mechanism for criminal tribunals
  20. 1.3. Structure of oil asphaltenes