It was discovered in 1962 by Pakistan Shell Oil Company.

It is controlled by Sylhet Gas Fields Limited.

[4] In 2012, conducting a 3D seismic surveys, Bapex found oil reserves of nearly 137 million barrels in Kailashtilla and Haripur; of which 109 million barrels of oil reserve at Kailashtilla and the remaining of 28 million barrels in Haripur.

[2] Oil was first discovered in Haripur field in the 1980s.

According to the BAPEX, the oil found in Kailashtila field is lighter and easily extractable, then that in Haripur.