Study of methods for increasing the productivity of flooded gas condensate wells

Authors

  • S. V. Matkivskyi JSC UkrGasVydobuvannya
  • L. І. Matiishyn Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Street Ivano-Frankivsk Ukraine, 76019
  • A. V. Tyro Український науково-дослідний інститут природних газів

DOI:

https://doi.org/10.31471/1993-9868-2022-1(37)-33-40

Keywords:

productive deposit, well, water drive, watering, fluid accumulation, optimization of operating conditions, artificial lift, gas lift, hydrocarbon recovery enhancement.

Abstract

Most of the productive deposits in the fields of Ukraine are at the final stage of development and are characterized by selective watering. The difficulty of extracting residual reserves of natural gas is associated with the peculiarities of development at the final stage, which is characterized by low values ​​of reservoir pressure, low production rate and watering of production wells with various complications during their operation. In order to remove the gas-liquid mixture from the bottom of wells, many methods and inventions have been developed that are widely used in production. The developed technologies are characterized by different efficiency and have a number of technological limitations, which is mainly due to the peculiarities of the geological structure of hydrocarbon deposits. Given the above, there is a need for additional research to improve existing and develop new technologies for the operation of flooded wells. Using the Schlumberger PipeSim software package, studies were carried out to optimize the operating conditions of a flooded well under conditions of active formation water inflow into gas-saturated horizons by reducing the diameter of the tubing string, lowering the wellhead pressure and transferring the well to the gas lift method of operation. The calculations were performed for the conditions of a hypothetical well for various values ​​of wellhead pressure, tubing diameters, and various flow rates of gas-lift gas. The results of the studies indicate that the maximum flow rate of the production well is ensured by replacing the diameter of the tubing string from 62 mm to 50.3 mm, lowering the wellhead pressure from 10.16 MPa to the minimum allowable value at the level of 5 MPa and the gas-lift gas flow rate at the level of 59 th.m3/day during gas lift operation. The feasibility of implementing the studied methods and technologies depends solely on the ratio of non-watered and watered productive area of ​​the deposit.

 

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Published

2022-06-30

How to Cite

Matkivskyi С. В., Matiishyn Л. І., & Tyro А. В. (2022). Study of methods for increasing the productivity of flooded gas condensate wells. Oil and Gas Power Engineering, (1(37), 33–40. https://doi.org/10.31471/1993-9868-2022-1(37)-33-40

Issue

Section

SCIENTIFIC AND TECHNICAL PROBLEMS OF PETROLEUM ENGINEERING