Abstract: This article makes briefings about a series of research on how to make technological breakthrough in effective development of offshore low-permeability oil fields so as to settle the contradiction between “development on the basis of a few wells” and “establishment of effective production and injection pattern,” the contradiction between “high-efficiency production” and “low degree of spread” and the contradiction between “high-speed development” and “injection-production imbalance.” Based on theoretical analysis and laboratory experiment, the method for making technological breakthrough for effective development is brought under a systematic study, thus proposing to implement effective injection and production, keep energy continually and transform reservoirs effectively for gradual settlement of the above-stated three basic contradictions. A set of methods to make technological breakthrough for effective development of offshore low-permeability oilfields is created, which are of great significance to development of the pilot offshore low-permeability oil fields.

Key words: offshore oilfields, low-permeability oil reservoir, effective development, injection and production, maintenance of energy, reservoir transformation

摘要： 针对海上低渗透油田开发过程中出现的"少井开发"与"建立有效注采"之间的矛盾、"高效动用"与"波及程度低"之间的矛盾、"高速开发"与"注采不平衡"之间的矛盾,通过理论分析与室内实验,对其有效开发技术突破方法进行了系统研究。提出了实施有效注采、少井多控、持续能量保持和高效储层改造等方法,逐级化解了以上3项基本矛盾,建立并形成了一套海上低渗透油田有效开发技术突破方法,对于海上低渗透油田先导试验区开发具有重要的指导意义。

关键词: 海上油田, 低渗透油藏, 有效开发, 注采, 少井多控, 能量保持, 储层改造