With static wellbore condition, any gas entering into mud while tripping is called “Trip Gas”. Gas will be seen while circulating bottom up after tripping back in hole again. Trip gas is caused by swabbing effect while tripping out of hole.
If you see a lot of trip gas after circulating out, this situation indicates that the wellbore is almost in a balance condition.
IT IS A GOOD SHORT NOTICE .
THANKS
Good information regarding different type of gases. However, can you please elaborate as to how much quantity of gas shown on the monitor is acceptable?
Depend on the situation. Typically, the gas unit is less than 500 unit = OK.
thanks