Equipment. Technologies. Materials

SOLUTION OF THE FIRST PRINCIPAL BOUNDARY VALUE PROBLEM FOR A RIGID ANISOTROPIC HALF-PLANE

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Published: Friday, 30 September 2022 18:29

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Volume 12 (4), September 2022, Pages 68-75

¹Ismet Agalarova ²Ghazala Kheyrabadi

^1,2Assistant, Department of Mechanics, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

In this paper, we consider the solution of the first basic boundary value problem for an elastic half-plane with a circular cavity. In the article, the definition of an unknown function given in the inner contour is not associated with deviations due to the contour variable of the boundary condition, but with a system of infinite linear algebraic equations obtained in the process of orthogonalization of this boundary condition. The coefficients of the system of algebraic equations are expressed by integrals over a circular contour.

Keywords: System of algebraic equations, algorithm, anisotropic medium, integral, function.   

INVESTIGATION OF THE INFLUENCE OF THE LOWERING DEPTH OF DOWNHOLE SUCKER-ROD PUMPS ON THE DELIVERY FACTOR

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Published: Friday, 30 September 2022 18:09

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Volume 12 (4), September 2022, Pages 53-60

¹Ilqar Ahmadov, ²Sabina Tagiyeva, ³Samira Mansurova

¹SOCAR, Design Institute of Oil and Gas, Leading Researcher, Ph.d. Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ²SOCAR, Design Institute of Oil and Gas, Senior Researcher, Ph.D Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ³Assistant professor of Industrial Machines Department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

It is well known that, at present, late stage fields are operated mainly by sucker-rod pumps. The pumps are usually operated in rather complicated technological and hydrodynamic conditions, strongly influencing its efficiency. In the article the possible influence of downhole sucker-rod pump (DSRP) depth on delivery factor that is one of the indicators of operating efficiency of the entire sucker-rod pumping unit is investigated on the basis of actual field information. The values of oil and water delivery coefficients were calculated and functional dependence on the depth of sucker-rod pump immersion was built. The results showed an increase in the oil supply coefficient and a decrease in its water supply coefficient in the considered ranges of values. Mathematical models of the dependencies were also obtained. As a result of the conducted research, the expediency of the controlled increase of the depth of suspension of pumps in the conditions of operation of the considered field is confirmed.

Keywords: down-hole sucker-rod pump, delivery ratio, well operation, pump parameters, depth of pump suspension

ADVANTAGES OF TEMPERATURE RESISTANT COMPOSITE ALLOY MATERIALS

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Published: Friday, 30 September 2022 18:16

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Volume 12 (4), September 2022, Pages 61-67

¹Amir Mustafayev, ²Chingiz Nasirov

¹Docent, "Mechanics" department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ²Master, "Oil, gas transportation and storage" department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Composite materials are widely used in the manufacture of cutting-chopping and destructive elements of oilfield tools and equipment used in drilling, operation and workover of wells. In order to increase the cutting ability of the cutting part of the tool, the advantages of composite materials such as tungsten carbide (TC) are investigated in comparison with other materials and their resistance to high temperatures is ensured. The finite element method (two-dimensional simplex elements) is used to determine the stress-strain state created on the contact surfaces of the cutting-grinding and destructive tools.

Keywords: composite material, finite elements, tension, deformation, cutting tool.

ANALYSIS OF WASHING SOLUTIONS FOR OPENING PRODUCTIVE FORMATION IN WELL DRILLING

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Published: Friday, 30 September 2022 18:04

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Volume 12 (4), September 2022, Pages 46-52

¹Alihikmat Ahmadov, ²Fariz Gafarov, ³Makhluqa Rakhimova

¹Associate Professor, Dean the faculty of "Oil-mechanical", Ph.Ddepartment of «Industrial machines», Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ²Assistent professor of    «Mechanical»  department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ³Assistent professor of    «Mechanical»  department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail: This email address is being protected from spambots. You need JavaScript enabled to view it., https://orcid.org/ 0000-0001-6308-0704

ABSTRACT

The article deals with the selection of fluid solutions used in the drilling of oil and gas wells. As it is known, with the increase of the depth, the liquid expands and its density decreases. When determining the hydrostatic pressure of a fluid, it is recommended to take into account the change in temperature depending on the depth of the well. To do this, it is important to accurately determine the law of temperature change depending on the depth of the well. The quality of the solutions used in drilling a well depends on its basic physical properties. Thus, with a change in depth, reservoir pressure and temperature increase. Therefore, determining the density of the solution for optimal depth intervals is of great importance. The article recommends the use of quality washing solutions, such as well drilling fluid.

Keywords: sealant, design, elastic material, relaxation, durability.