Scientific Petroleum 2024, 2
GEOLOGY,
GEOPHYSICS & FORMATION EVALUATION
Prediction of oil and gas potential and the distribution area of reservoirs in the Zardab-Shikhbaghy-Kishlyak area of the muradkhanli oil and gas region A I. Khuduzade, H. İ. Shakarov, L. C. Abilhasanova, N. H. Mehdiyeva, N. H. Alkhasova «Azneft» PU, SOCAR. Baku, Azerbaijan «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan GGD, Exploration Geophysics Production Branch, Baku, Azerbaijan Azerbaijan State Oil and Industry University, Baku, Azerbaijan |
The comprehensive analysis and generalization of the result of geophysical exploration works conducted in the Yevlakh-Agjabedin depression also covered the Zardab, Shikhbaghy, Eastern Shikhbaghy and Kishlak structures. The geological cross-section and stratigraphy of the work area were studied through deep wells drilled in the Zardab, Shikhbaghy areas as well as in the neighboring Soyudlu and Muradkhanli areas. The geological structure of the area includes Cretaceous-Quaternary deposits. In the work area, it is observed that the thicknesses of the Neogene-Paleogene sediment complex decrease and some horizons completely wedge out indicating favorable conditions for the formation of lithological-stratigraphic traps. The prospects of the work area are associated with the carbonate and effusive sediments of the upper Cretaceous and the fractured and clastic reservoirs of the Eocene and Maykop. As a result of seismic and drilling works in the work area, three structural levels were identified: Mesozoic, Paleogene and Neogene-Anthropogene. Dynamic and kinematic interpretation works were carried out in the research area structural maps were drawn up relevant parameters were selected and attribute analyses were calculated. Natural oil and gas manifestations were observed in the area. RMS, Variance, Generalized Spectral Decomposition and Sweetness attributes enable the identification of areas distinguished by the variable properties of the wave field. According to the calculated RMS attribute map high amplitude values in the Upper Eocene sediments are locally observed around fractures in the northern and northeastern parts of the area. Keywords: seismic exploration; deposit; attribute analysis; kinematic and dynamic parameters; RMS attribute; instantaneous amplitude; variance attribute; high amplitude values; sweetness attributes. e-mail: hafiz.shekerov@socar.az Date submitted: 07.10.2024 Date accepted: 16.12.2024 |
RESERVOIR ENGINEERING
Determining the minimum risk zones and reduction of geological risks in the application of enhanced oil recovery methods S. O. Heydarli «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan |
For effective results in the application of both traditional and innovative Enhanced Oil Recovery (EOR) methods, a comprehensive analysis of geological and mining data is essential. Insufficient data or uneven distribution across the oil field often introduces significant challenges and uncertainties in selecting the most suitable EOR techniques and delineating their optimal application areas. These complexities necessitate a systematic approach to manage geological risks and enhance the effectiveness of EOR strategies. To address these challenges, a novel methodology has been developed to identify, assess, and mitigate geological risks associated with the implementation of EOR techniques. This approach encompasses the identification of geological parameters that influence EOR performance, distinguishing both positive and negative factors. Moreover, the boundary values for these parameters have been determined, enabling a more precise evaluation of their impact and enhancing the reliability of the results. The spatial distribution of each parameter across the field has been meticulously mapped, allowing for a detailed assessment of risk zones versus minimum-risk zones. These maps were then integrated to highlight the areas most suitable for EOR applications with minimal geological risks. A key advantage of this methodology is its applicability at all stages of field development, ensuring continuous risk assessment and optimization of recovery strategies. By leveraging this comprehensive approach, oil recovery efforts can be significantly enhanced while minimizing associated risks. This not only improves decision-making processes in oil production but also ensures the reliability and efficiency of selected EOR methods, contributing to more sustainable and productive resource exploitation. Keywords: oil reservoir; geological risk; uncertainty; thermal method; minimum-risk zone. e-mail: servan.heydarli@gmail.com Date submitted: 24.10.2024 Date accepted: 03.12.2024 |
| Kh. M. Ibrahimov, A. A. Hajiyev, A. F. Akbarova, F. K. Kazimov «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan |
The article focuses on optimizing acid treatments for the wellbore zone, considering the geological and lithological characteristics of the formation. The geological and lithological characteristics of the deposits in the OGPDs of the «Azneft» PU were investigated, and the selection of acids was justified depending on the lithological composition of the deposits. By conducting laboratory studies, the effect of acid compositions on cuttings samples taken from different horizons was studied, the optimal acid composition and volume were selected, and the mutual effect of their compositions with formation fluids was determined. The study of the effect of acid compositions on cuttings samples taken from the 600-640 m depth of the GA horizon of the «Absheronneft» OGPD showed that compositions with a low content of hydrofluoric acid in the composition had a better effect on the decomposition of cuttings. Thus, since the samples were decomposed and dispersed when affected by these compositions, the penetration of the acid into the rock sample was facilitated and the mass loss was higher. The research also indicated that compositions containing organic acids were particularly effective in breaking down the rock samples. The presence of organic acids appears to enhance the dissolution and disintegration of the rock, making them a promising choice for acid treatments. Laboratory experiments conducted on drilling cuttings from the Pirallahı field of «Absheronneft» OGPD have shown that the best permeability recovery is achieved with a solvent mixture consisting of 6% HCl and 2% HF, resulting in a 37% recovery. Keywords: acid treatment of the bottomhole zone; wellbore zone; chemical solvent compositions; improving fluid filtration; restoring permeability. e-mail: aliabas.haciyev@socar.az Date submitted: 15.10.2024 Date accepted: 16.12.2024 |
| Kh. A. Feyzullayev, M. S. Khalilov, A. A. Damirov «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan; Baku State University, Baku, Azerbaijan Lankaran State University, Lankaran, Azerbaijan |
Based on mathematical modeling under the influence of capillary and gravitational forces of condensate operating in depletion mode, settling in the gas-condensate layer, as a result of redistribution in height, the formation of a technogenic-condensate flow at the gas-water boundary and the production of condensate by a horizontal well drilled into it were studied. Initially, when exploiting a gas condensate formation with a five-point production well, the nature of the distribution of reservoir pressure and phases along the height, the time of formation of technogenic condensate and the interval of its location along the height of the gas field were determined. In the second case, the process of water exposure was realized by exploiting the formation with production wells to remove condensate with a horizontal well drilled into a technogenic condensate deposit. Mining wells reveal the productive height of the formation in two ways: in the first case from the upper part, in the second case from the lower part, and after entering the condensate flow, the horizontal well is introduced into operation. Exposure to water ends at 98% dilution of the horizontal well product. The results of calcuıations show that the formation of technogenic condensate at the water-gas interface in the reservoir depletion mode is the result of the segregation process. The greatest effect in increasing the condensate yield of a horizontal well drilled into a technogenic condensate field is achieved by pumping water from the upper part of the formation. Keywords: gas-condensate reservoir; segregation process; technogenic condensate fringe; horizontal well; condensate recovery coefficient. e-mail: xasay.feyzullayev@socar.az Date submitted: 15.10.2024 Date accepted: 17.12.2024 |
PRODUCTION
& OPERATIONS
Development of a new composition for the prevention of asphaltene-paraffin-resin deposits T. F. Ibadzade «OilGasScientificResearchProject» Institute, SOCAR, Baku, Azerbaijan |
This article focuses on the use of chemical methods against asphaltene-resin-paraffin (ARP) deposits. The article mentions the «NQ-AP-1» regent, which consists of a demulsifier, methyl alcohol and alkaline waste, against the formation of ARP deposits. Based on laboratory studies, the optimal mass percentage of components in the composition was determined. In addition to the demulsifier, the composition to be used against ARP sediments contains methyl alcohol and the optimal amount of components of alkaline waste obtained from the treatment of diesel fuel, demulsifier – 0.8%; methanol – 5.2%; alkaline waste – 94%. The effect of the prepared «NQ‑AP‑1» reagent on the rheological properties of ARP oils was studied, and as a result of the reagent's effect, the oil changed its rheological properties and showed the properties of Newtonian oils. The optimal consumption rate of the reagent was determined by the «cold fingers» method. Here, the amount of paraffin collected on «cold fingers» was compared to crude oil and oil with 600, 800 and 1000 g of reagent added to 1 t. While the amount of ARP collected on «cold fingers» in unreacted oil was maximum (10.41 g), when 800 g/t of reagent was added to the system, this indicator was 7 g. The research results show that the reagent «NQ-AP-1» can be used as an effective method against ARP deposits, the use of the composition allows to achieve high economic efficiency. The composition provides a fairly high efficiency against ARP deposits, it is designed to prevent ARP deposits during oil extraction and transportation. Keywords: asphaltene-resinparaffin deposits; chemical treatment; inhibitor; demulsifier; well bottomhole zone. e-mail: terlan.ibadzade95@gmail.com Date submitted: 30.09.2024 Date accepted: 13.12.2024 |
Development of a gas-sand separator with adjustable design parameters to prevent the negative impact of mechanical impurities on borehole pumping equipment L. G. Hacikarimova, F. F. Ahmed, E. S. Abdullayeva, E. Sh. Azimova Azerbaijan State Oil and Industry University, Baku, Azerbaijan |
A significant proportion of Azerbaijan's oil fields consist of low gradient fractured rock and are in a late stage of development. The development of such fields is characterised by low production rates, intensive sanding and high water cut. The majority of wells (more than 70%) are operated mainly by the deep pumping method. Electric centrifugal submersible and borehole pumps are the most common. Various types of impact on the bottom hole zone of the reservoir to stimulate oil production result in increased removal of mechanical contaminants. Sand particles and mechanical impurities in the produced products destroy the working parts of the deep well rod pumps, resulting in frequent and premature failure. Finely dispersed gas in the well fluid also has a negative effect on pump performance. An effective method of combating the harmful effects of mechanical impurities and gas on pump operation is the use of gas sand separators. In order to prevent the negative effects of gas and mechanical impurities on the operation of the rod deep well pump, a gas-sand separator with adjustable design parameters has been developed. The developed gas-sand separator can be used in any sand well, as the distance between the spring strings is adjusted according to the size of sand particles and mechanical impurities in the well product. The developed gas-sand separator has successfully passed field testing. The implementation took place at OGPA Apsheronneft (well No. 952). As a result, the well's overhaul period was increased to the range of 2-2.5. Keywords: well; oil; sand; gas; mechanical impurities; sucker rod pump; plunger; cylinder; performance; separator; spring; screw; well products. e-mail: elmira_abdullayeva_2024@mail.ru Date submitted: 18.09.2024 Date accepted: 13.12.2024 |
INJECTION
& PRODUCING FACILITIES
|
A. N. Gurbanov, A. Y. Comardov
Azerbaijan State
Oil and Industry University, Baku, Azerbaijan
«OilGasScientificResearchProject»
Institute, SOCAR, Baku, Azerbaijan |
The
accidents arising in the collection and transportation system, as a result of
complications during transportation and storage of gas and gas condensate,
caused by their physicochemical and rheological properties, lead to both loss
of production and damage to the ecological state of the environment. As we
know, the difficulties and obstacles that arise during the collection,
preparation for transportation, and storage of hydrocarbons are related to
their multicomponent and multiphase nature, as well as their structural
structure, the elimination of which has been investigated. The complexity and
complications arising from the collection, transportation and storage of
hydrocarbons in many cases due to their complexity and multiphase, as well as
their structural structure. Collection and transportation of multiphase well
products at offshore fields requires the selection of a reasonable pipeline
diameter. The collection distance of gas condensate mixtures cannot be
increased indefinitely by increasing the pipeline diameter and has a maximum
limit. Increasing the collection distance beyond this limit leads to filling
the gas pipeline with liquid (condensate) and deterioration of the efficient
operation of the gas pipeline. To determine the hydraulic resistance
coefficient, known formulas were used for a single-phase hydraulic medium using
the velocity and density of the mixture, as well as its viscosity. At the same
time, the use of two dependences for laminar and turbulent flows for the
calculation of the hydraulic resistance coefficient was considered sufficient.
At the same time, empirical formulas are used to determine the diameter and
length of pipelines.. Keywords: transportation;
pipeline; gas-condensate; systems; diameter; hydraulic; liquid; separation; hydrodynamic;
separation. e-mail: anarcomerd1978@gmail.com Date
submitted: 21.10.2024 Date accepted:
16.12.2024 |
ENVIRONMENT
PROTECTION
|
I. F. Guliyev
Baku State University, Baku, Azerbaijan |
The
article deals with the ecological and geochemical peculiarities of naturally
growing woody plants in the mid-mountainous conditions of the
Valvalachai-Gusarchai interfluve area located on the northeastern slope of the
Greater Caucasus. Comparing the average mass of elements in woody-shrub
vegetation shows that some species of plants are distinguished by higher
content of some elements). Hornbeam is characterized by larger amounts of Cr,
Co, Pb, beech by Ni, Cu, and oak by Zn among the woody plants. Beech is
distinguished by minimal amounts of Cr. Minimal amounts of Co, Ni, Cu, Zn are
characteristic of birch, Pb of oak. The lowest amounts of Cr, Ni, Zn, Pb are
observed in the hazelnut tree. The amount of cobalt in this tree is slightly
higher. Ratios between maximal and minimal amounts are statistically reliable.
The comparative analysis of the intensity of biological absorption of elements
in terrestrial plant and woody-shrub vegetation of the landscape showed a
significantly weaker level of absorption of all studied elements (except Cr) by
woody-shrub vegetation. The absorption intensity of chromium is close to the
absorption intensity of terrestrial vegetation. So, Cu, Zn, Pb move from
intensive absorption order to moderate absorption order in terrestrial
vegetation, and depending on plant species, their absorption intensity
decreases by 5.3-9.0, 9-18 and 2.2-5.3 times, respectively. Ni is characterized
by medium absorption intensity in terrestrial vegetation and woody shrub
vegetation, but absorption intensity is 1.3-3.5 times lower in woody
vegetation. Cobalt moves from moderate absorption in terrestrial vegetation to
weak absorption in woody-shrub vegetation (with 7.5-12 times decrease in
absorption intensity). Keywords: ecological
and geochemical peculiarities; northeastern slope of the Greater Caucasus; naturally
growing woody plants; chemical elements (Cr, Co, Ni, Cu, Zn, Pb). e-mail: ilgar.guliyev1@gmail.com Date submitted: 09.12.2024 Date accepted: 13.12.2024 |
FUNDAMENTAL
RESEARCH
|
G. S. Guseinov, T. E. Karimli,
T. H. Tahmazova
Azerbaijan State
University of Oil and Industry, Baku, Azerbaijan
Baku State
University, Baku, Azerbaijan |
This
article is devoted to the study and determination of optimal process flow
charts for gold extraction from the Gyzylbulag deposit ores, as well as to the
analysis of their practical significance in the context of modern mining
production. In the context of growing demand for gold and resource limitations,
it is important to develop effective methods that not only increase the extraction
rate, but also minimize the environmental impact and economic costs.The article
considers the features of the ore composition of the Gyzylbulag deposit, their
mineral and chemical composition, which play a key role in choosing the
appropriate extraction technology. The authors analyze in detail the efficiency
of traditional methods, such as gravity concentration, for processing these
ores, considering each of them in terms of extraction rate. Particular
attention is paid to the integration of various methods into a single process
flow chart, which allows to increase the overall gold extraction rate and
reduce losses of the precious metal at all stages of processing. The practical
significance of the results lies in the proposal of processing schemes that can
be applied not only at the Gyzylbulag deposit, but also in other regions with
similar geological conditions. These schemes are aimed at optimizing gold
extraction while reducing production costs and environmental impact, which
meets the objectives of sustainable development in the mining industry. The
article is addressed to specialists in the field of mineral processing,
researchers and practitioners involved in the development of effective methods
for processing gold-bearing ores. Keywords: native
gold; gravity; gold dimensions; flotation. e-mail: kerimli.terlan@inbox.ru Date submitted: 16.09.2024 Date accepted:
16.12.2024 |
Scientific Petroleum 2024, 2
