靜17塊小井距加密調(diào)整方案研究
[Abstract]:Block Jing 17 is structurally located in the eastern part of Jinganbao structural belt, and the development target layer is S34 member, which is a lithologic-structural reservoir, belonging to fan delta front deposit with an average porosity of 14.3% and an average permeability of 76 脳 10 ~ (- 3) 渭 m ~ 2. The buried depth of the reservoir is-2070m / m ~ 2230m, the oil-bearing area is 6.1km~ 2, and the geological reserve is 669.85 脳 104t. Since it was put into development in 1988, Jing 17 block has gone through three different stages, namely, upper stage, stable stage and decreasing stage. It is very difficult to develop because of the low porosity and permeability of the reservoir and the high condensate properties of the crude oil. The main problem is that the water injection effect is not good under the condition of large well spacing in low permeability sandstone reservoir, and the effect of oil well is poor, which seriously affects the overall development of the block. At present, the oil recovery rate of Jing 17 block is only 0.19%, and the recovery degree is 6.89%. It is difficult to reach the standard recovery rate of 17.5% according to the current well spacing and development pattern. Therefore, it is necessary to carry out multi-scheme research including straight well infill, horizontal well fracturing and so on, to carry out reasonable well pattern spacing, to compile reasonable infill scheme, to perfect injection-production well pattern, and to realize water flooding development in block. Improve the effect of block development. In foreign countries, the idea of "anti-nine-point water injection-five-point method-infilling well pattern-tertiary oil recovery" is often used to develop low permeability oil fields, and good results have been obtained. Generally speaking, the higher the well density and the higher the control degree of the water drive, the higher the oil recovery. In China, Changqing Petroleum Management and Exploration Bureau makes use of orthogonal test to carry out numerical simulation and optimization development scheme, taking the maximum cumulative net present value corresponding well pattern density as the reasonable well pattern density. On the basis of single index analysis (mining degree, stable production life and cumulative net present value), the multi-index comprehensive analysis is carried out to find the optimal scheme design.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TE324
【共引文獻(xiàn)】
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