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2.7 Bases of technology doizvlechenija residual oil from obvodnennyh chinks

The composition applied as a superseding reagent should correspond to following criteria:

The composition should make through maximally penetrating 6 depth obvodnivshegosja a layer with permeability from 0,03 to 0,15 мкм2;

The composition should increase replacement factor;

The composition should not cause irreversible decrease in permeability of a porous medium;

The composition should not influence processes of assembly and oil preparation negatively;

Composition components should be accessible, cheap, be manufactured at domestic factories.

To these requirements satisfies the emulsive systems manufactured by Joint-Stock Company "HIMEKO-GANG".

Basis of technology of increase in an oil recovery from obvodnennyh chinks is the return emulsion in composition, volume %: solar oil - 20, neftenol NZ - 4, 32 % solution СаС12 - 3, water with a sheet mineralization (6 g/l NaCl + 2 g/l CaCl ^ - 73. Above laboratory researches prove high petrosuperseding ability of the yielded composition in relation to porous mediums with a residual petrosaturation.

The technology consists in zakachke in obvodnivshujusja on 60 - 80 % a chink specified above a reagent in serially portions: the first portion in number of 10 - 15 м3 on metre obvodnivshihsja the layer intervals, the second portion in number of 15 - 20 m of/m, the third portion in number of 20 - 25 m3/m etc.

After zakachki every portion the chink is deduced on a technological mode and in each 2 hours gauging debita on liquids and a sampling on water content in production is manufactured. If the diurnal oil recovery minus a hydrocarbonaceous component zakachannogo quantities of a reagent above than before processing it is manufactured zakachka a new portion of a reagent until an additional oil recovery does not become an equal hydrocarbonaceous component.

Technological process of application of a composition does not demand creation of the special equipment and is manufactured on the basis of existing technics and carried out by means of the equipment applied at capital and underground repair of chinks.

Following means are necessary for work:

Containers for reception and storage of reagents;

Vehicles for delivery of reagents to objects of processing (a tank lorry of type АЦ-10, АЦ-15 or any other mark);

Cementing aggregate ЦА-320 (ЦА-320М) - for washing, zakachki reagents and water.

The quantity of units of technics can differ depending on volume

zakachivaemyh compositions.

Zakachka working composition it is manufactured in the extracting chinks meeting following requirements:

priskvazhinnaja the platform and access roads should provide placement of the equipment and a special equipment for carrying out of research works and processing, and also to meet requirements of the accident prevention, fire safety and preservation of the environment;

Chinks should be investigated on character and a source obvodnenija by means of methods of the promyslovo-geophysical researches, providing construction of profiles of inflow and obvodnenija;

- The interval of punching and sump should be free from a deposit and alien subjects;

obsadnaja the column of a chink except for a punching interval should be tight;

There should be a qualitative dissociation of an operated layer with above - and subjacent layers, absence zakolonnyh overflows of fluids;

Nasosno-compressor pipes (NKT) both other special land and underground equipment should be preliminarily prepared and opressovany the pressure exceeding working in 1.5 times;

The land and well equipment, and also water waters should be ready to start-up of forcing chinks under zakachku waters;

The sheet temperature should not exceed 100 °s;

Centre obvodnennost production on an influence site can change in limits from 40 to 80 %.

Application of technology does not demand changes in system of maintenance of sheet pressure. Preparation of working compositions is carried out on a platform directly on a bush, removed on distance not less than 10 m from a forcing chink.

2.8 Bases of technology tamponirovanija obvodnivshihsja intervals

The composition applied as a superseding reagent should correspond to following criteria:

The composition should make through maximally penetrating 6 depth obvodnivshegosja a layer with permeability from 0,03 to 0,15 мкм2;

The composition should cause irreversible decrease in permeability of a porous medium;

The composition should not influence processes of assembly and oil preparation negatively;

Composition components should be accessible, cheap, be manufactured at domestic factories.

To these requirements satisfy the emulsive systems manufactured by Joint-Stock Company "HIMEKO-GANG".

Technology basis tamponirovanija obvodnennyh layer intervals in chinks is the return emulsion as a part of %: solar oil - 20, neftenol NZb - 4, 32 % solution SaS ^ - 3, water with a sheet mineralization (6 g/l NaCl + 2 g/l CaClJ - 73.

Above by laboratory researches it is proved high tamponirujushchaja ' ability of the yielded composition in relation to obvodnivshimsja to porous mediums.

The composition of the specified composition prepares or in special container, or in a tank lorry for what after mixing within 5-10 minutes components are follow-up agitated by the pump of aggregate ЦА-320. Emulsion forcing in volume 20 - 25 м3 on metre obvodnennyh intervals carry out by means of aggregate ЦА-320, and pressure of forcing of the first working solution support equal or smaller on 10 % of producing pressure of water injection from KNS. Excess of pressure of forcing is inadmissible. Forcing pressure control carry out by decrease or reduction of feed rate of aggregate.

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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 2.7 Bases of technology doizvlechenija residual oil from obvodnennyh chinks:

  1. 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
  2. 2.6. Laboratory researches of possibility doizvlechenija micro-residual oil after zavodnenija for conditions of layers of XIII horizon of deposit Uzen
  3. 3.4 Bases of technology of increase in productivity of chinks
  4. 4.3.2 Features of behaviour of an oil recovery and obvodnennosti layer production on chinks of XIII horizon in comparison with chinks of the North Salymsky deposit
  5. 1.2 Quantitative distribution of residual oil on the deposit area
  6. 1.1.6 Residual oil at unstable replacement
  7. 1.1.4 Film residual oil
  8. 1.1.2 Is capillary-jammed residual oil
  9. 4.3.4 Signs of display of properties of wettability of collectors on change of an oil recovery and obvodnenosti chinks
  10. 1.1 Kinds of residual oil in zavodnennyh layers
  11. 3.4.4. Technology of processing of chinks and preparation of working solutions
  12. 1.3 Distribution of residual oil of water in emptiness of hydrophilic and hydrophobic collectors
  13. 1.1.3 Adsorbed residual oil
  14. 1.1.5 Residual oil in deadlock pores and micronon-uniform zones
  15. CHAPTER 1 MODERN REPRESENTATIONS ABOUT RESIDUAL OIL In DEPOSITS AFTER THEM ZAVODNENIJA
  16. publicly-legal bases of the state-private Partnership in an oil and gas complex