2023 - 2 - Scientific Petroleum

Scientific Petroleum
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Scientific Petroleum 2023, 2
O. V. Rajabli
Azerbaijan State Oil and Industry Universit, Baku, Azerbaijan
In order to evaluate the paleotectonics of the Mesozoic sediments in the Yalama-Khudat uplift zone, lithofacies and tectonic activity index were used. Representation of lithofacies with more accurate data and digital values of thickness data help to obtain realistic results about paleotectonic development. In the study, the tectonic development of the Yalama area was evaluated based on geological data. Although the decrease of tectonic activity continued towards the end of the Cretaceous, the repetition of lithofacies can be explained by the repetition of marine transgression and regression processes in the same area. The paleotectonic accumulation conditions of the Cretaceous sediments had their influence on the oil-gas generation and collector characteristics of the sediments.

Keywords: Paleotectonic analysis; Lithofacies features; Sediment accumulation rate; Tectonic activity.
e-mail: orkhanrajabli@gmail.com
N. A. Imamverdiyev, M. Y. Hasanguliyeva, A. A. Valiyev, R. E. Rustamova
Baku State University, Baku, Azerbaijan; Institute of Geology and Geophysics of the Ministry of Science and Education Republic of Azerbaijan, Baku, Azerbaijan; Azerbaijan International Mining Company, Baku, Azerbaijan
The source of the primary magmatic magma of the Upper Pliocene-Quaternary trachybasalt-trachyandesite volcanic complex of the central part of the Lesser Caucasus is investigated in the article. The distribution of rare earth elements in the rocks of the trachybasalt-trachyandesite complex indicates that the source of the vulcanite’s was a metasomatically altered garnetbearing mantle substrate. Based on the geochemical characteristics of moderately alkaline olivine basalts, it was determined that the source of the magma is a lithospheric mantle containing metasomatized phlogopite-garnet-rutile.

Keywords: Lesser Caucasus; Upper Pliocene-Quaternary volcanism; Primary magma; Lithospheric mantle hosting metasomatized phlogopite-garnetrutile.
e-mail: inazim17@yahoo.com
G. A. Abbasov, N. N. Khalilov, L. M. Talibzade, L. B. Gurbanzade
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
As a result of analyzing solutions and dry residues obtained during the study of the interaction of core samples with various types of water, it was found that the interaction of the core with distilled water resulted in the dissolution of Na++K+, Ca2+, Cl-, HCO3- ions and other components, leading to a decrease in the mass of the core dry residue by more than 2.0%. Interaction of the core with technical water led to an increase in mass by approximately 1.0%. In the case of seawater, the mass of the core dry residue decreased by more than 1.0%. The conducted research proves that the interaction of the core with different types of water causes certain physico-chemical processes, as a result of which the dissolution and precipitation of various salts occur. These results can have significant practical value in conducting analysis and determining the composition of various solutions.

Keywords: Core; Technical water; Seawater; Distilled water; Soluble salts; Precipitated salts; Sulfate-sodium type.
e-mail: nurlan.xalilov1@gmail.com
E. S. Abdullaeva
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
Considerable petroleum reserves of Azerbaijan are confined to fields, the layers of which are mainly structured of incompetent rocks. Well operation is accompanied by the destruction of the bottom-hole formation zone, and, as a consequence, sand production, which leads to a drop in oil production. Sand production leads to the formation of sand plugs in wells, which makes it difficult for fluid to flow from the formation to the well. In this regard, new foam and foam-polymer compositions for washing sand plugs in sand-producing wells have been developed and studied. The advantage of the developed foam systems as flushing liquids in order to ensure optimal consumption of surfactants and aluminum nanoparticles is considered. Considering that the problem of sanding in the fields of Azerbaijan is very relevant, the developed foam compositions are widely used.

Keywords: Oil well; Bottom – hole; Appearance; Sand pluq; Foam compositions; Polimer; Aluminum nanoparticles.
e-mail: elmiraabdullayeva2016mailru.abd@mail.ru
K. I. Metiyev, M. E. Alsafarova, N. I. Emel
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
A new inhibitor «NDP-22M» was developed to reduce the pour point of highly paraffinic oils and prevent the formation of asphalt, resin and paraffin deposits. The inhibitor contains a nonionic surfactant, a depressant agent and a solvent. The prepared inhibitor has the ability to reduce the pour point and viscosity of oil, as well as to prevent ARPD. The prepared inhibitor was studied on oil brought from the wells of the oil and gas production department of the production association «Azneft», «Oil Pipeline Administration». In this oil, the amount of paraffin is 10.8%. In the course of research, it was found that the effectiveness of adding 300 g/t of reagent to oil is 75%.

Keywords: Precipitation; Depressant; Oil; Pour point; Paraffins; Depressive effect; Dynamic viscosity; Viscosity effect.
e-mail: matanatalsafarova@gmail.com
А. Q. Gurbanov, L. Q. Hajikerimova, A. F. Akperova
UBOC, Baku, Azerbaijan; «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
The deposition of asphaltenes, resins, paraffins (ARP) and salts in tubing, surface equipment and transport lines is one of the important problems in the production and transportation of well products. At high temperatures at the bottom of the well, the components of crude oil are in a liquid state; when the temperature decreases, as they rise to the surface and exit the well, asphaltene, resinous, and paraffin compounds begin to separate from the oil and settle in production pipes and equipment. Laboratory studies were carried out using highly paraffinic oil from the Sangachal-Duvanni-Khara-Zira field, a new developed paraffin sedimentation inhibitor named after N. Narimanov. The effectiveness of inhibitors was determined by the «cold block» method. The results of numerous studies have shown that the developed new inhibitor is highly effective in preventing the precipitation of paraffins and salts, as well as in improving both the rheological properties and the freezing point of oils.

Keywords: Well; Parafin; Asphaltene; Resin; Salt; Bottomhole zone; Tubing; Reagent; Inhibitor; Composition.
e-mail: lala.qadjikerimova@mail.ru
M. A. Jamalbayov , Kh. M. Ibrahimov, N. A. Alizadeh
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan; Heydar Aliyev Military Institute, Baku, Azerbaijan
The problem of displacing hydrocarbon systems injected into the reservoir by water in zonally heterogeneous collectors is considered. In this case, the reservoir of circular shape, developed by a single central well, is assumed to consist of two zones with different reservoir and rheological properties. The solution to the problem is obtained, taking into account the incomplete displacement, compressibility of water, and PVT properties of the hydrocarbon system—phase transformation, mass exchange between phases of the hydrocarbon system. Based on the binary representation of the complex hydrocarbon system, a solution to the considered problem is obtained, and an algorithm for calculating the main indicators of the hydrocarbon displacement process to the well is proposed. This algorithm accounts for the fact that the reservoir has different reservoir and rheological characteristics in the near-wellbore region (internal zone) and the distant part of the reservoir (i.e., in the external zone).

Keywords: Displacement; Gas-condensate mixture; Volatile oil; Heterogeneous reservoir; Water flooding; Binary model; Unsteady-state flow.
e-mail: mehemmed.camalbeyov@socar.az
К. I. Matiyev, A. M. Samedov, A. D. Aghazadeh, F. M. Akhmedov
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
In the field development practice, the most common method for protecting oilfield equipment and pipeline surfaces from inorganic salt deposits is inhibitor protection. To enhance prevention efficiency, a salt deposit inhibitor has been developed, which contains a surfactant, acid, and anionic polymer. The aim of this development is to eliminate the need for scarce and expensive reagents, increase formation productivity by preventing the formation of inorganic deposits during the treatment of carbonate and terrigenous productive formations, and eliminate contamination of formation and downhole equipment by insoluble salts, as well as salt deposits in pipeline systems. Samples prepared at a flow rate of 10-30 g/t demonstrated a high inhibitor effect in preventing calcium sulphate and carbonate deposition. Field tests of the developed salt deposition inhibitor yielded positive results.

Keywords: Salt deposition inhibitor; Adsorptiondesorption properties; Inhibition efficiency; Calcium sulfate; Calcium carbonate; Field tests.
e-mail: kazim.metiyev@socar.az
Publisher’s Note
This article was published on December 2022 with several errors in the authors and affiliations. The correct authors and affiliations appear below. All online versions of the article were corrected on January 2023; the article is correct as it appears in the online version of the journal.
Development and laboratory test of the gelling composition for the selective isolation of formation waters
Kh. M. Ibragimov, А. Q. Gurbanov, F. K. Kazımov, A. F. Akberova
«OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan
Umid Babek Operation Company (UBOC), Баku, Azerbaijan
Scientific Petroleum No. 2 (2022) 040-046
Scientific Petroleum 2023, 2

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