SAGD METHOD AND POSSIBILITY OF APPLICATION FOR HEAVY OIL FIELDS OF KAZAKHSTAN

The production of high-viscosity oils is now becoming more and more important due to the depletion of traditional oil and gas fields. For the development of deposits of heavy oils, thermal extraction methods are of greatest interest. The essence of thermal production methods is the injection of a heat carrier – steam into the reservoir to reduce the viscosity of oil. The extraction, preparation and transportation of such oils is often complicated and sometimes impossible due to its low mobility due to the high viscosity of this oil. The field of scientific activity during the commissioning of heavy high-viscosity oils is expanding. In the world, light oils are extracted no more than 50%, heavy high-viscosity oils in the range of 10 to 30%, depending on the characteristics of oil, water and reservoir. Thermal extraction methods are of the greatest interest for the development of heavy oil deposits. Thermal methods of oil field development are divided into two fundamentally different types. The first is based on intra-layer combustion processes created by initiating the combustion of coke residues in the bottom-hole zone of injection wells, followed by the movement of the combustion front by pumping air (dry gorenje gorenje gorenje gorenje gorenje) or air and water (wet gorenje). The second is based on the injection (from the surface) of heat carriers into oil formations. The essence of thermal extraction methods is the injection of a coolant – steam into a productive reservoir to reduce the viscosity of oil.Of a number of thermal methods, the most interesting is the technology of steam-assisted gravity stimulation of a reservoir (SAGD).

1. https://vseonefti.ru/neft/tyazhelaya-neft.html.

2. Hajn N. (2008) Geologija razvedka, burenie i dobycha nefti. – M.: ZAO «Olimp-Biznes». – 752 p.

3. Zaurbekov K.S., Logvinenko A. Obzor i analiz nauchnyh statej po parogravitacionnomu vozdejstviju na plasty vysokovjazkoj nefti. Trudy Mezhdunarodnyh Satpaevskih chtenij «Nauchnoe nasledie Shahmardana Esenova», Almaty, KazNITU im. K.I. Satpaeva, 12–14 aprelja 2017 g.

4. Butler R.M., Morkys I.J. A new process (VAPEX) for recovering heavy oils using hot water and hydrocarbon vapour // The Journal of Canadian Petroleum Technology. – 1991. – Vol. 30. – № 1. pp. 97–106.

5. Sadler K.W. An EUB Review of In Situ Oil Sands Bitumen Production // SPE paper 30240-MS presented at SPE International Heavy Oil Symposium, 19–21 June, Calgary, Alberta, Canada. – 1995.

6. Hisamov R.S., Amerhanov M.I., Hanipova Ju.V. (2016) Izmenenie svojstv i sostava vysokovjazkih neftej pri realizacii tehnologii parogravitacionnogo vozdejstvija v processe razrabotki Ashal'chinskogo mestorozhdenija. – M.: Neftjanoe hozjajstvo.

7. Tehnologija dobychi «tjazheloj» nefti. : Materialy Evrazijskogo jenergeticheskogo foruma Conoco Phillips (5 sentjabrja 2008 g.).

8. Pshenicyn M., OAO «Udmurtneft'». Metod parogravitacionnogo drenazha (SAGD). XVIII Mezhdunarodnaja specializirovannaja vystavka gazovoj promyshlennosti RosGazJesspo, g. Sank- Peterburg , 7–10 oktjabrja 2014 g.

9. Optimizacija razrabotki mestorozhdenija tjazheloj nefti. – 2006. : www.slb.com/oilfield. Schlumberger.

10. Metod parogravitacionnogo drenazha (SAGD) : https://vseonefti.ru/upstream/sagd.html.