Published August 2022, Pg. 70-76

Section: Young scientists and specialists

UOT: 622.276.6

DOI: 10.37474/0365-8554/2022-08-70-76

A new method of development of inhomogeneous formation

U.T. Ahmadova - SOCAR Downstream Management LLC

To improve the efficiency of flooding process, a method of development of inhomogeneous formation allowing isolating flooded high-permeable zones, preventing salt deposition directly in the reservoir, increasing displacement ratio due to the inter-phase tension, wettability and permeability of a rock as well is offered.

The method includes adding chemical agents into the seawater with its further injection into the deposit through injection wells. The optimum amount of added mixture has been specified experimentally. The mixture of the chemical agents is added into the seawater in amount of 1.0 %, while the increase of displacement efficiency reaches up to 9.1 %. In case if produced water is hard, prior to the injection of seawater bank, an alkali water bank with pH from 11.4 to 14 is injected into the deposit.

References:

1. Brikov A.V., Markin A.N. Ispol´zovanie  reagentov neftepromyslovoy khimii v usloviyakh morskikh neftegazodobyvayushchikh ob´yektov // Territoriya Neftegaz, 2016, No 7-8, s. 52-56.

2. Litvinenko V.I. Problemy zavodneniya neftyanykh mestorozhdeniy shel´fa arkticheskikh morey // Zapiski Gornogo instituta,
t. 176, s. 57-60.

3. Yousef A.A., Ayirala S.C. A Novel Water Ionic Composition Optimization Technology for SmartWater Flooding Application in Carbonate Reservoirs: SPE-169052-MS https://doi.org/10.2118/169052-MS 2014

4. Mahmoud M., Elkatatny S., Abdelgawad K.Z. Using high- and low-salinity seawater injection to maintain the oil reservoir pressure without damage. J Petrol Explor. Prod Technol, 2017, 7, pp. 589–596. https://doi.org/10.1007/s13202-016-0279-x

5. Ghasemiana J., Riahia S., Ayatollahib Sh, Mokhtaric R. Effect of salinity and ion type on formation damage due to inorganic scale deposition and introducing optimum salinity // Journal of Petroleum Science and Engineering, 177 (2019), pp. 270-281.

https://doi.org/10.1016/j.petrol.2019.02.019

6. Jafar Mazumder M.A. A Review of Green Scale Inhibitors: Process, Types, Mechanism and Properties / M.A. Jafar Mazum-
der // Coatings, 2020, No 10, pp. 1-29.

7. Khormali A. Study of adsorption/desorption properties of a new scale inhibitor package to prevent calcium carbonate formation during water injection in ail reservoirs / A. Khormali, D.G.Petrakov, R.N.Moghaddam // Journal of Petroleum Science and Engineering, 2017, No 153, pp. 257-267. 

8. Macedo R.G. Water-soluble carboxymethylchitosan as green scale inhibitor in oil wells / R.G.Marcedo, N.N.Marques, L.C.Paulucci [et al.] // Carbohydrate Polymers, 2019, No 7, pp. 137-142.

9. Wang H. The study of a highly efficient and environment-friendly scale inhibitor for calcium carbonate scale in oil fields / H.Wang, J.Hu, Z.Yang [et al.] // Petroleum, 2021, No 1, pp. 1-14.

10. Zhang Z. Fluorescent-tagged hyper-branched polyester for inhibition of CaSO4 scale and the scale inhibition mechanism / Z.Zhang, M.Lu, J.Liu [et al.] // Materials Today Communications, 2020, No 12, pp. 1-30.

11. Aksenov D.A. Effektivnost´ predotvrashcheniya otlozheniy soley s pomoshch´yu ingibitorov // European science, 2016, No 56, s. 5-7.

12. Akhmedov F.M. Razrabotka novogo ingibitora, sposobnogo predotvrashchat´ soleotlozheniya // Azerbaidzhanskoe neftyanoe khozaistvo, 2021, No 4, s. 32-37.

13. Voloshin A.I. Ingibitory dlya predotvrashcheniya soleotlozheniya v neftedobyche / A.I. Voloshin, V.N. Gusakov, A.V. Fakhreyeva [i dr.] // Neftepromyslovoe delo, 2018, No 11, s. 59-72.

14. Gasanov Kh.I. Ingibitory soleotlozheniya na osnove fosfatov etilendiamina i solyanoy kisloty / Kh.I. Gasanov, N.N. Khali-
lov // Bulatovskie chteniya, 2020, t. 2, s. 126-128.

15. Dokichev V.A. Uglevody – noviy klass “zelenykh” ingibitorov soleotlozheniy / V.A. Dokichev, E.I. Koptyaeva, F.G. Ishmuratov i dr. // Neftyanoe khozaistvo, 2016, No 5, s. 92-94.

16. Matiev K.I. Ingibitor soleotlozheniya. Podana zayavka na Evraziyskiy patent No 202000291 i polucheno reshenie o vydache patenta ot 13.01.2022/ A.M. Samedov, A.D. Aga-zade, F.M. Akhmedov, 2020.

17. Puchina G.R. Sovremennaya praktika preduprezhdeniya i udaleniya soleotlozheniy / G.R. Puchina, V.V. Ragulin, A.G. Telin
[i dr.] // Neftegazovoe delo, 2020, No 2, s. 72-80.