Research And Application Of Comprehensive Treatment Technology Of Well Eccentric In PuBei Faulted Block Oil-field

Changyuan vertical layers in lasaxing oilfield and reservoirs across the thin,large reservoir physical differences;development of sand bodies in the plane,reservoir heterogeneity is serious;layers due to above reasons contradictions and plane leads to water-injection development effects.Uneven degree of vertical reservoir,part of the potential of the poor use of layers are still not effectively used and remaining oil distribution in complex plane,tapping the potential of remaining reserves is difficult.Mainly in two aspects: the significant contradictions between a longitudinal upper,water absorption in between the layers in the layers are quite different.Demonstration area of six oil production plant of fine small layer between the different water layers with 548,accounting for 38.03% of the injection section.Water absorption in the small injection strength had reached 13.77 m3/d.m,poor water absorption in small layers of water only 3.25m3/d.m strength.On the second plane,heterogeneity is serious.On the same single sand body,water injection effect is very uneven.Horizontal joints of sand fracturing in oil production plant of fine geology research and remaining oil distribution based on the symmetry element for the study to reduce the layer as well as conflicts and to improve the degree of reservoirs using targeted,single sand fracturing adjustment techniques.Integrated consider longitudinal layer between real sex differences and plane sand body development of non-are quality sex,in plane Shang for single sand body implementation fracturing transformation,perfect note mining system,improve drive oil efficiency;in longitudinal Shang implementation subdivision fracturing,improve small layer of use degree,improved produced liquid profile and the sucking water profile,eventually reached on longitudinal Shang of potential layer one by one transformation of target.The study for adjustment and tapping of remaining oil to provide effective technical means for improving the development effect of old have important practical significance.Daqing oil field development process in the,past implementation fracturing transformation just for a well of several small layer for,main to single well yield,and increased note for purpose,and no consider to through fracturing transformation on whole well group implementation development adjustment,to improve well group and the block of overall development effect,so,and for Daqing oil field for level sewing single sand body transformation fracturing process technology research,will has is important of meaning.