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针对目前国际石油开采的发展形势,大力开发海洋油气资源势在必行。本文主要介绍了适合我国深水安全钻进的双梯度钻井——采用双密度方案的双梯度钻井技术。双密度钻井技术共有3种方式,即注空心球双梯度钻井技术、隔水管气举双梯度钻井技术和隔水管稀释双梯度钻井技术。文中还对我国发展双密度钻井技术提出了看法和建议。
In view of the current situation of international oil exploration, it is imperative to vigorously develop offshore oil and gas resources. This paper mainly introduces the double gradient drilling which is suitable for deepwater drilling in our country - double gradient drilling technology adopting double density scheme. There are three ways to double-density drilling technology, namely, double-hole drilling with hollow ball, dual-gradient riser with air lift and double-gradient riser dilution. The paper also put forward opinions and suggestions on the development of double-density drilling technology in our country.