Pre-exploration stage

1 exploratory well drilled in Fuyang oil layer in this area is Zhao 1 well drilled in 1962. This well saw the oil and gas show, but did not explain the oil layer, so it did not run casing. The well discovered at 1 in this area is Fang 16, and this well encountered 1978. This well is located in the 7th layer of Fuyang oil layer (1956.4 ~ 1959.6m), with a daily oil production of 1.8 1t and a water production of 0. During the 24 years from 1962 to 1986, about 40 exploratory wells were drilled, including1/industrial oil flow wells.