Research on Well Control and Blowout Prevention Technology for Small Diameter Core Drilling in Shallow Gas Area of Daqing Oilfield

Abstract:

The well control and blowout prevention is a most important technology in small diameter core drilling in the shallow gas area, for blowout is the most serious accident in drilling construction. According to the geological core drilling characteristics, and in view of the high risks characteristics of shallow gas such as shallow buried depth, wide distribution in the block, large probability of blowout and high risk of construction, the small diameter core drilling construction technical methods in shallow gas area are worked out; according to the relevant regulations of “Implementation Details for Well Control in Daqing Oilfield Drilling”(draft for comments), and combining the geological conditions in shallow gas areas in southern Changyuan of Daqing as well as the requirement of full hole coring in geological drilling, the well control equipment configuration standard of small diameter core drilling and technical measures are established to ensure safe production and no blowout accident.