Analysis of the technology of intensifying oil production through the bottomhole formation zone treatment in the Potochnoe field

The paper considers the influence of crank radius change on pumping unit kinematics during the dynamic fluid level control between tubing and casing in order to reduce the string fault rate. To improve the quality of prediction of these factors, the calculation of the movement of the polished rod over time is carried out using the Fourier variable separation method: the product of the balance bar head of a pumping unit defined as the movement of the slider of the pumping mechanism (in a straight line – like the chords of a circle), and the difference of such a chord with the length of the circle section equivalent to the movement of the articulated joint of the balance bar with the connecting rod. As a result, the accuracy of calculations is improved and the solution of the problem is simplified.

Section: Resultsmentioning

confidence: 99%

Influence of formation drilling conditions on the choice of well stimulation method

Gabzalilova

Garifullina

2022

“…The main reason for the low productivity of wells along with poor natural permeability of the formation and poor-quality perforation is a decrease in the bottomhole zone permeability [2].…”

Section: Introductionmentioning

confidence: 99%

Impact of hydraulic fracturing on development indicators at BS10, BS11, US11 zones of Yuzhno-Yagunskoye field

Gabdrakhmanov

Almukhametova

Karimova

et al. 2022

The study considers three production zones of Yuzhno-Yagunskoye field. The study analyzes one method of oil intensification from the formation, namely Hydraulic Fracture Treatment (HFT), and provides the results of its influence on development indicators within three zones of Yuzhno-Yagunskoye field. A series of hydraulic fracturing operations was carried out in the period from 1995 to 2017. The methods for analyzing the bottomhole zone of the formation were used to process field data. However, it should be noted that in comparison with previous periods of hydraulic fracturing technology, the effect is reduced, which implies further modification of the used hydraulic fracturing technology. The purpose of this study is to evaluate the process efficiency of hydraulic fracturing at Yuzhno-Yagunskoye field. The above results were used during hydraulic fracturing at Yuzhno-Yagunskoye field.

Restoration of intake capacity of injection well by vibrations

Zaripova

Gabdrakhimov

2019

Nowadays deterioration of productivity and intake capacity of wells cause different problems in exploitation of oil and gas fields. It happens because of some irreversible physicochemical processes in the bottomhole formation zone: swelling of clay materials, colmation, formation of stable emulsions, confluence of salts, iron oxides etc. Various methods and technologies are used to solve these problems. However, they have disadvantages, for example, material and energy intensity, short-lived equipment, technological complexity. The method of pulse action by various vibrations seems to be the most effective solution. Vibrations are mechanisms that create controlled fluctuations of the working body influencing a recycled material and a reservoir. Now they are widely used in different industries.