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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44944

Design and Optimization of Suitable Artificial Lift For High BHP Wells

Naisarg R. Mehta, Dr. Shailendra J. Naik

Abstract

Based on the available reservoir and production data of a given field, it was understood that few wells were unable to generate the hydrocarbons on account of certain fluid properties, wellbore depth and decline in reservoir pressure. The BHP of these wells and PI is found to be higher. But the wells were either not productive enough or were not able to deliver up to the mark on account of necessity of reservoir pressure. Here, the challenge was to overcome the hydrostatic column pressure. Since the IPR and TPC were not intersecting. Accordingly, study of IPR, TPC and VLT was completed. Available resources in the given oil-field were taken into consideration, selection criteria of artificial lifting were applied and initial scrutiny was conducted to decide an artificial lifting method. Finally, gas lifting technique was found to be more suitable. The wells are generating oil & gas for a number of years, but now the production rate is minimizing with the time. Based upon initial calculations, screening criteria, availability of excessive gas in the same field and the potential of data; Continuous gas lifting has been found to be more appropriate and the best option to increase Production rate. Accordingly, this research purpose is to study the whole mechanism of artificial GL optimization to maximize oil and gas generation for the wells under consideration. Design of a GL system suited to the proper well condition and ready to maximize the production of the well has been worked out in this project. It will help to maximize the generation by optimizing GLR, number of gas injection valves and their spacing along with daily gas injection pressure and volumetric gas injection rate. The total gas used for oil generation is restricted by daily obtainability restrictions and maximum injection volume into each well. The problem is to recognize the injection of the optimum amount of gas into each well to maximize the total amount of oil generation from the high BHP reservoir on a daily basis has been addressed. IPM Prosper and manual design engineering calculations have been used to come to a conclusion. It is desired that, this kind of approach will be helpful to all those oil wells to derive productive gain and faster large financial benefits for such wells. OBJECTIVE: As the oil filed gets matured, the generation of the oil filed is minimizing over a number of years. This is occurring due to the truth that pressure inside the reservoir getting reduced as the oil & gas generated from the reservoir increasing, thus minimizing the flow of oil & gas from the reservoir. Design of a GL system convenient for the genuine well condition and able to maximize the oil and gas generation of the well. The purpose of this research is to study of GL system based on genuine data from an oil well and choose a system best convenient to maximize the generation of the oil field.

Keywords

Optimization, Gas Lift, Artificial lift, High BHP well

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