A kick was taken when drilling a high-pressure zone of a depth of 9,875 ft with a mud density of 9 ppg. After the well was shut-in, the pressures...

A kick was taken when drilling a high-pressure zone of a depth of 9,875 ft with a mud density of 9 ppg. After the well was shut-in, the pressures recorded were SIDP = 300 psi and SICP = 370 psi. The total pit gain observed was 5 bbl. The annular capacity against 900 ft of drill collar is 0.0292 bbl/ft. The overkill safety margin is 0.5 ppg. Compute the formation pressure, kick density, the type of fluid, and the required kill mud weight.