Methods for destruction of complicated water-oil emulsions of Botakhan oilfield

UDK: 665.62
DOI: 10.24887/0028-2448-2017-6-109-111
Key words: water-oil emulsions, oil, oil treatment, demulsifier
Authors: Ye.S. Panova, G.I. Boyko (Satpayev Kazakh National Technical University, Kazakhstan, Almaty), R.G. Sarmurzina (National Company KazMunayGas JSC, Kazakhstan, Astana), N.P. Lubchenko (Higher Education Institution UNAT, Kazakhstan, Almaty), K.M. Kassymgaliyev (EmbaMunaiGas JSC, Kazakhstan, Atyrau), U.S. Karabalin (Association KazEnergy, Kazakhstan, Astana), B.U. Akchulakov (Almex Petrochemical LLP, Kazakhstan, Atyrau)

A new composite demulsifier KNTU-14 was developed to destroy the oil-water emulsions. The comparative study of the effectiveness of industrial demulsifiers (Dissolvan 4795 and 4908, Randem-2208) with KNTU-14 was implemented. The basic properties of oil-water emulsions of Botakhan oilfield were identified. Analysis of group composition of the oil phase of investigated oil-water emulsions were carried out. It is shown that asphaltenes are the primary stabilizers of oil-water emulsions of Botakhan oilfield. It was found that the products of tested wells - highly watered, formation water is highly mineralized of calcium chloride type; pH of the aqueous phase increases the stability of the test water emulsions.

According to the generalized results of the group composition of oil and properties of water it is assumed that the water-oil emulsion from the well number 150 is more stable than from the well number 121.

For the analysis of the raw water- oil emulsions in the presence of dispersed water, as well as for analysis of oil after the demulsification of oil-water emulsions to confirm the effectiveness of their destruction by reagent KNTU-14 was brought diferentsialno-thermal analysis (DTA). It has been shown that using demulsifier KNTU-14 as in a thermochemical or chemical demulsification it was obtained oil of first category of water content.

References

1. Nebogina N.A., Prozorova I.V., Yudina N.V., The process of stabilization and sludging of water-oil systems (In Russ.), Neftegazovoe delo, 2007, URL: http://ogbus.ru/authors/Nebogina/Nebogina_1.pdf.

2. Akhiyarov R.Zh., Gogolev D.A., Laptev A.B., Bugay D.E., Increase in the efficiency of water-oil environments demulsification by their magnetohydrodynamic processing (In Russ.), Neftegazovoe delo, 2006, URL: http://ogbus.ru/ authors/Ahiyarov/Ahiyarov_1.pdf.

3. Yasakov E.A., Investigation of the properties of the known (PC-H) and developed demulsifiers for dehydration and desalting of water-oil emulsions (In Russ.), Neftegazovoe delo, 2010, URL: http://ogbus.ru/authors/Yasakov/ Yasakov_1.pdf.

4. Pozdnyshev G.N., Stabilizatsiya i razrushenie neftyanykh emul'siy (Stabilization and destruction of oil emulsions), Moscow: Nedra Publ., 1982, 221 p.

5. Innovative patent no. 24256 KZ, Sposob obezvozhivaniya i obessolivaniya nefti (Method of dehydration and desalting of oil), Inventors: Boyko G.I., Lyubchenko N.P., Maymakov T.P., Shaykhutdinov E.M., Orazbekuly E., Zhunusov A.E., Zhermolenko E.A., Nursultanov M.E., Sabdalieva M.K.

6. Baykov N.M., Pozdnyshev G.N., Mansurov R.I., Sbor i promyslovaya podgotovka nefti, gaza i vody (Gathering and field preparation of oil, gas and water), Moscow: Nedra Publ., 1981.

7. Ermakov S.A., Mordvinov A.A., On the effect of asphaltenes on the stability of water-oil emulsions (In Russ.), Neftegazovoe delo, 2007, URL: http://ogbus.ru/authors/Ermakov/Ermakov_1.pdf.

8. Vody neftyanykh i gazovykh mestorozhdeniy SSSR (Waters of oil and gas fields of the USSR):  edited by Zor'kin L.M., Moscow: Nedra Publ., 1989, 27 p.

9. Orazbekuly E., Modifitsirovannyy sopolimer maleinovogo angidrida i ego model'nye soedineniya - novye khimicheskie reagenty dlya podgotovki neftey k transportirovke i pererabotke (Modified copolymer of maleic anhydride and its model compounds are new chemical reagents for the oil treatment to transportation and processing): thesis for the degree of Doctor of Philosophy, Almaty, 2013, URL: http://kazntu.kz/sites/default/files/kazntu.kz_131213_ND_Orazbekuly.pdf

A new composite demulsifier KNTU-14 was developed to destroy the oil-water emulsions. The comparative study of the effectiveness of industrial demulsifiers (Dissolvan 4795 and 4908, Randem-2208) with KNTU-14 was implemented. The basic properties of oil-water emulsions of Botakhan oilfield were identified. Analysis of group composition of the oil phase of investigated oil-water emulsions were carried out. It is shown that asphaltenes are the primary stabilizers of oil-water emulsions of Botakhan oilfield. It was found that the products of tested wells - highly watered, formation water is highly mineralized of calcium chloride type; pH of the aqueous phase increases the stability of the test water emulsions.

According to the generalized results of the group composition of oil and properties of water it is assumed that the water-oil emulsion from the well number 150 is more stable than from the well number 121.

For the analysis of the raw water- oil emulsions in the presence of dispersed water, as well as for analysis of oil after the demulsification of oil-water emulsions to confirm the effectiveness of their destruction by reagent KNTU-14 was brought diferentsialno-thermal analysis (DTA). It has been shown that using demulsifier KNTU-14 as in a thermochemical or chemical demulsification it was obtained oil of first category of water content.

References

1. Nebogina N.A., Prozorova I.V., Yudina N.V., The process of stabilization and sludging of water-oil systems (In Russ.), Neftegazovoe delo, 2007, URL: http://ogbus.ru/authors/Nebogina/Nebogina_1.pdf.

2. Akhiyarov R.Zh., Gogolev D.A., Laptev A.B., Bugay D.E., Increase in the efficiency of water-oil environments demulsification by their magnetohydrodynamic processing (In Russ.), Neftegazovoe delo, 2006, URL: http://ogbus.ru/ authors/Ahiyarov/Ahiyarov_1.pdf.

3. Yasakov E.A., Investigation of the properties of the known (PC-H) and developed demulsifiers for dehydration and desalting of water-oil emulsions (In Russ.), Neftegazovoe delo, 2010, URL: http://ogbus.ru/authors/Yasakov/ Yasakov_1.pdf.

4. Pozdnyshev G.N., Stabilizatsiya i razrushenie neftyanykh emul'siy (Stabilization and destruction of oil emulsions), Moscow: Nedra Publ., 1982, 221 p.

5. Innovative patent no. 24256 KZ, Sposob obezvozhivaniya i obessolivaniya nefti (Method of dehydration and desalting of oil), Inventors: Boyko G.I., Lyubchenko N.P., Maymakov T.P., Shaykhutdinov E.M., Orazbekuly E., Zhunusov A.E., Zhermolenko E.A., Nursultanov M.E., Sabdalieva M.K.

6. Baykov N.M., Pozdnyshev G.N., Mansurov R.I., Sbor i promyslovaya podgotovka nefti, gaza i vody (Gathering and field preparation of oil, gas and water), Moscow: Nedra Publ., 1981.

7. Ermakov S.A., Mordvinov A.A., On the effect of asphaltenes on the stability of water-oil emulsions (In Russ.), Neftegazovoe delo, 2007, URL: http://ogbus.ru/authors/Ermakov/Ermakov_1.pdf.

8. Vody neftyanykh i gazovykh mestorozhdeniy SSSR (Waters of oil and gas fields of the USSR):  edited by Zor'kin L.M., Moscow: Nedra Publ., 1989, 27 p.

9. Orazbekuly E., Modifitsirovannyy sopolimer maleinovogo angidrida i ego model'nye soedineniya - novye khimicheskie reagenty dlya podgotovki neftey k transportirovke i pererabotke (Modified copolymer of maleic anhydride and its model compounds are new chemical reagents for the oil treatment to transportation and processing): thesis for the degree of Doctor of Philosophy, Almaty, 2013, URL: http://kazntu.kz/sites/default/files/kazntu.kz_131213_ND_Orazbekuly.pdf


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