关键词: 稠油油藏, 水侵, 开发特征, 开发对策, 孤岛油田

Abstract: There are abundant heavy oil reservoirs in Shengli oilfield,but most of them with active edge and bottom water.During the process of huff and puff,the reservoir pressure decreases continuously,which results in the edge and bottom water advancing forward,water content ratio of flooded area raises sharply,and water flooded area expands which comes up to 70 percent of the total producing area.In order to enhance the ultimate recovery factor,exploitative law is analyzed in heavy oil reservoir with edge and bottom water.Displacement performance curve is applied in heavy oil reservoir for the first time.And in accordance with the present situation of water invasion,the whole heavy oil reservoir is divided into different well blocks,i.e.,strong watercut block,weak watercut block,nonwatercut block,and outer layer watercut block etc.Variation law of development target is analyzed by using heavy oil permeability knowledge.According to different development contractions,distinct adjusting program is adopted,and then remarkable effect is acquired

Key words: heavy oil reservoir, water invasion, development feature, development strategy, Gudao Oilfield