Boyle’s Gas Law and Its Application in Drilling

Understand Boyle’s Gas Law

Boyle’s law states that at constant temperature, the absolute pressure and the volume of a gas are inversely proportional in case of constant temperature within a closed system. It may sound pretty hard to understand what it is.

Well, we can describe the statement above into simple mathematics as following formula:

Boyle’s Gas Law: P x V = constant

Or express Boyle’s law in another term: P1 x V1 = P2 x V2

Where; P = Pressure and V = Volume

It sounds easy a little bit to understand.

Let’s apply Boyle’s law into our drilling business

Calculate the volume of gas you will have on the surface, 14.7 psi for atmospheric pressure, when 1 bbl of gas kick is circulated out from reservoir where has formation pressure of 3,000 psi.

Boyle’s Gas Law: P1 x V1 = P2 x V2

P1= 3000 psi (reservoir pressure)

V1 = 1 bbl (volume at bottom hole)

P2 = 14.7 psi (atmosphere pressure)

V2 = ? (volume at surface)

P1 x V1 = P2 x V2

3000 x 1 = 14.7 x V2

V2 = 204 bbl

Reference book: Well Control Books

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10 Responses to Boyle’s Gas Law and Its Application in Drilling

  1. MUHAMMED ADNAN KHAN says:

    Thank you for your useful information. Kindly send me some Litrature fo Silicate Mud system and send us the testing procedure of Sodium Silicate in the system.

  2. Alibek says:

    Isn’t “P*V=const” when “T=const”?
    Otherwise, it should be “(P*V)/T=const”. If I remember school programm well.

  3. Alibek says:

    What I mean is that temperature of resourvoir is higher than temperature on surface.

  4. farzad fezzi says:

    Thank you for your useful information. Kindly send me some Litrature fo Silicate Mud system and send us the testing procedure of Sodium Silicate in the system.

  5. Fortune Ikonwa says:

    Thank you for your useful information. Kindly send me some Literature on Glycol mud system and Silicate Mud system and send us the testing procedure of Glycol and Sodium Silicate in the system.

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