NATURAL GAS PRODUCTION ENGINEERING MOHAN KELKAR PDF

Every gas well will suffer from liquid loading problem as the rate from the well declines. Every gas well produces some produced water if not also condensate. At high gas flow rates, gas is able to entrain the liquid to the surface. However, that water or condensate cannot be carried to the surface at lower gas flow rates. Liquid loading results in premature abandonment of a gas well as the liquid accumulates at the bottom of the well creating significant backpressure.

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Every gas well will suffer from liquid loading problem as the rate from the well declines. Every gas well produces some produced water if not also condensate. At high gas flow rates, gas is able to entrain the liquid to the surface.

However, that water or condensate cannot be carried to the surface at lower gas flow rates. Liquid loading results in premature abandonment of a gas well as the liquid accumulates at the bottom of the well creating significant backpressure. In the last 10 years, most of the gas well development has changed from primarily vertical wells to horizontal wells. All the wells drilled in unconventional formations are horizontal wells. The flow behavior of gas and liquid in inclined wells is significantly different than what is commonly observed in vertical wells.

To mitigate the liquid loading problems, it is important that we can correctly predict the inception of liquid loading in both vertical and horizontal wells. In this presentation, we provide an analytical procedure to predict the liquid loading in both vertical and horizontal wells.

The method is based on transition from annular to slug flow as the liquid film on the tubing surface becomes unstable at the low gas flow rates. The proposed equation can be applied at any inclination angle. We have validated our results with both the lab data and field data. We demonstrate that our prediction of inception of liquid loading are superior to existing correlations in the literature.

He served as a chairman of Petroleum Engineering department from through August of He has authored over 60 refereed papers and has made over technical presentations at various technical meetings.

He has authored or co-authored three books.

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NATURAL GAS PRODUCTION ENGINEERING

Flipboard Kelkar Committee to look at ways to raise oil, gas production India currently imports 80 per cent of its oil needs and about half of its natural gas requirement. India currently imports 80 per cent of its oil needs and about half of its natural gas requirement. Oil Minister M Veerappa Moily wants to cut down reliance on imports to half. Towards this objective, the ministry "constituted a Committee headed by Dr Vijay Kelkar to prepare a roadmap for enhancing domestic production of oil and gas and sustainable reduction in import dependency by ," an official statement said. The Committee has been asked to submit its report to the government within six months. India produces around 33 million tonne crude, which is enough to meet just about 20 per cent of the demand for fuel. Natural gas production at million standard cubic meters per day is just half of the demand.

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Natural gas production engineering

Reservoir performance covers the fundamentals of reservoir gas flow and details the best methods for testing wells, according to the time and money available. Reserve calculations and diagnostic testing from production data are covered. The importance of flow regime and non-Darcy flow on test design and interpretation is emphasized for new wells and for the possibility of improving the performance of older wells. Also discussed are performances of tight formations, horizontal wells, fractured wells, and methods for estimating gas reserves.

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Kelkar Committee to look at ways to raise oil, gas production

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