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[Mudassssir011]

Dear Professional,

I am a entrant in the field of oil and gas, and am working in the engineering procurement and construction department of the company. Today, I was assigned to develop the datasheet for automatic choke valve for a remote well with WHFP of 5500 psig at 70 MMScfd gas flowrate and a CGR of 5-10 bbl/MMscfd and WGR of 1 bbl/MMscfd. We want the sizing of auto choke to be done at maxium/normal/minimum of 70/50/25 mmscfd gas flowrate. Everything is going good but there is a discusion with which i am confused, which is about the selection of valve characteristics of this automated choke valve. One process engineer suggests equal percentage and other saying linear. One is saying linear would be best suited if we had oil wells and other is saying equal percentage would not provide better control over flow as a small opening will result in increase in flowrate. I am in a bit of confusion state.

I welcome you all for the discussion to better understand the role of valve characteristics in chike valve.

[chocobang]

Refer to some vendor catalogues (i.e. https://masterflo.co...es-technology/)

 

Chokes are usually have high system pressure drop upstream (i.e. tubing) and downstream. This might be the reason equal percentage are used by choke valve vendors. Furthermore, wells (depending on type) sometimes are known to turndown after a year or so. An equal percentage will have better turndown capacity.