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

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