A Study on rational well spacing for Producing Evaluation and Solution Scheme of the Water Injection in Northern Daqing Blocks

The inter of daqing oil field has already entered the period of high water cut,with the deepening of oil and gas field development technology,the current water flooding development objects in the high and moderate permeableness layers gradually transformed into poor thin layers, such reservoirs with the complicated structure have poor development benefits, but the remaining reserves of several million tons of the demonstrated reserves mainly exist in low permeability poor thin layers. The development well pattern deployment of thin and poor pay zones still have the problems of the imperfectly injection-prodction relation, poor water flooding wells driving, and low producing degree,and it is still difficult to employ the reservoirs with poor development. In order to improve the effect of oil development,and enhance the producing degree of low poor thin reservoirs with permeability,so that it can establish the effective driving energy system,the research on effective producing limitation and technology policy limitation of thin and poor pay zones need to strengthen. Through a lot of research abroad effective producing and rational development technology policy limitation research results on the thin and poor pay zones, based on the basis of previous word, the paper study the microscopic pore structure of thin and poor layers, and compares with the thick reservoirs, while carrying out the research on effective producing limitation and development technology policy limitation of thin and poor layers. On the basis of the standard model fitting the paper analyzed the plane and vertical distribution characteristics of the remaining and also discussed the rational well spacing for producing evaluation.