关键词: 浅层气, 　泄漏, 　固井, 　树脂水泥浆, 　防治技术

Abstract: In the process of exploration and development, shallow gas does great harm to drilling operations. Currently, how to effectively seal the shallow well section to prevent secondary disasters, is a technical problem in petroleum industry both at home and abroad. There are shallow gas in many blocks in Bohai oilfield, and the most typical one in Bozhong area. The conventional cementing cementing of shallow gas is difficult to meet the sealing requirements, resulting in the leakage of shallow gas to bring economic loss and drilling engineering risk. Aiming at the problem of shallow gas prevention and control, this paper improves drilling technology, cementing method, cement type optimization and auxiliary measures, innovatively introduces resin cement slurry system, and forms a set of sealing technology suitable for shallow gas in Bohai bay, which has been successfully applied in Bozhong A oilfield to ensure drilling operation safety and to achieve greater economic benefits.

Key words: Shallow gas, Let out, Well cementation, Resin cement slurry, Prevention and control technology