In Sazhong Development Area Two Or Three Kind Of Water Flooding Comprehensive Adjustment Method

The polymer flooding is constantly expanding in Sazhong oil field of Daqing, but according to the planning and design of water flooding,the water flooding still has a long production period,and the development is mainly concentrated in the second and the third type reservoirs, the two types oil field have many layers and big thickness.After the primary and secondary encrypt adjustment, the exploitation potential of water flooding is getting smaller, diminishing natural is getting greater, production capacity is declining. Therefore, it is necessary to study the comprehensive exploration method to look for the ways and means of water flooding development for the second and the third type reservoirs; Studying the comprehensive adjustment technology to improve the effect of the second and the third type reservoirs water flooding development, extending the production cycle of water flooding.This paper studied the distributing of sandstone on the basic of researching and evaluation effect of water flooding combining with the new drilling geological features,according to the results of new drilling water flooded layer interpretation, sidewall coring data, a neural network to describe remaining oil method and single well single layer remaining geological reserves evaluation method. This paper definite the distribution of residual oil of second and third type reservoirs.This paper carried through the water flooding comprehensive exploration method aiming at the experimental zone of the second and the third combing the condition of the thrice production network, spacing, firstly studying the influencing factor of the second and the third reservoir water flooding development, mainly studying the adaptive conditions, for the studying of high water cut period the second or the third kinds of law and carry out the high water cut reservoir water that flooding development is under the condition of dense well pattern control of water exploration method to study and to lay a solid foundation; Tracking through the use of mature water flooding adjustment technology and reasonable optimized segmentation injection water, deep profile control, increasing the adjustment scheme and injection-production well matching design, making the reasonable experimental zone water injection and production structure adjustment, the control of injection water inefficient, invalid loops, controlling water cut is rising velocity, controlling the production decline and improving the inside layer, interlayer and use difference between well group, forming two, three types of reservoir water flooding development stage of form a complete set of comprehensive water flooding adjustment technology. To use differences between experimental zone between interval, the well group and the pressure difference is narrowed, realizing the production decline, casing damage occurred, controlling water cut rising velocity effectively, the effect of experimental zone is further improved.