As jianghan oil production plant has, in accordance with the "out of the question on the oil, water for the" train of thought, solid do a good job in water injection through perfecting injection-production well pattern, the implementation of injection water and governance owe segment well, improve waterflood, build a stable foundation, effectively enhance the level of reservoir management. From January to June, the old well of the plant decreased naturally to 7.82 percent, down 12 percent from the same period last year, the best level in nearly three years. From January to June, the plant was responsible for a total of 9 injection Wells, with a daily increase of 127 cubic meters, which effectively replenished the formation energy and further solidify the stable production base.
In jianghan oil region of sand bodies for oil area usu. in two lines is difficult to improve the actual, which combining with the characteristics of reservoir and injection-production corresponding rate of 27 indicators evaluation with poor development unit, the classification of injection-production perfecting implementation, improve the water drive reserves control degree. In order to reduce the natural decline of the block, the measures to optimize the well net are adopted to improve the injection ratio and reduce the natural decline of the block. The corresponding rate of the three injection-mining corresponding rates in the three sections of the city of zhong city and the city of zhong city is lower than the average level of the factory, and the measures to adjust the well spacing are adopted to improve the energy of the strata and ensure the effect of water injection. In order to ensure the formation of the "effective water", the experiment of artificial side-water flooding and flow field adjustment is carried out in the block of the contradictions between the Wells and the new trenches. This year the factory by strengthening yellow field oilfield yellow 2 wellblock weak direction - yellow diagonal - 2 Wells water injection water, improve the edge Wells yellow 2 and 13 completion fluid volume, gathered themselves together, and make the remaining oil to the yellow 2-5 well realize remaining oil targeted guidance, yellow 2-5 Wells to card leakage after nissan has risen from 0.8 tons to 5.3 tons of oil. From January to June, the plant implemented a total of 11 Wells in the flow field, adding 18.1 tons of oil.
In terms of the implementation of subdivision waterflooding, the plant can alleviate the contradiction between layers by increasing the injection rate and the distribution of the oil fields. Points in improving oilfield injection rate, the plant based on the block layered output condition and geological and technical personnel interlayer remaining oil potential, etc. The evaluation results, optimizing honghu 43, the new groove, the old oil fields, the central potential new development blocks, such as the eight mouth of injection Wells, implement comprehensive subdivision water injection adjustment. In improvement points injection level, combined with latent 42 oil group implement subdivision of understanding, water injection in clock in oil field is a part of Wells in the multilevel segmentation affusion work, realize the multilevel segmentation, refining the injection-production profile adjustment, to ensure the well meet the waterflood effect. At present, the plant has carried out a thin layer of water injection into the oil Wells of the zhongxin slope 7-17 and zhongxin 8 in zhongxin oilfield, aiming to achieve good results. In view of the factory could not be completed because of high water injection pressure injection allocation of injection Wells, the factory in accordance with the "production priority, energy priority, efficiency priority" principle, the segment on the guanghua, the central latent 43, and the new groove, drag city developing unit 19 key injection Wells, such as according to owe note after the corresponding oil well production condition, partial rights note measures. At the same time, strengthen to owe injector tracking analysis, measures of augmented injection invalid injection Wells to carry out the process supporting arguments on the ground, the benefit evaluation feasible water injection booster pump installation, improve the single well water injection, geological development demand.