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孤岛油田东区Ng3稠油单元采用热采方式开发,单元南部井网未加密区及单元北部强水侵区储量动用状况较差。在单元潜力分析及依据评价基础上,对南部井区实施井网加密,将200×283m反九点法井网加密为141×200m五点法井网;对单元北部实施稠油水淹层顶部水平井挖潜。本次调整是在现有认识的基础上对东区东Ng3稠油进行整体调整,部署新井20口,提高储量动用程度。方案实施效果较好,调整后井区日油水平由375t上升至554t,含水由84.6%下降至82.1%。
The Ng3 heavy oil unit in the eastern part of Gudao Oilfield was developed by means of thermal recovery. The utilization of reserves in the unconfined area of the well and the strong water intrusion in the northern part of the unit was poor. Based on the unit potential analysis and the basis evaluation, we carried out the well pattern encryption in the southern well area, and encrypted the 200 × 283m anti-9-point well pattern to 141 × 200m five-well pattern. In the north of the unit, Hirata tapping potential. This adjustment is based on the existing understanding of East East Ng3 heavy oil to adjust the overall deployment of new wells 20 to improve the utilization of reserves. The implementation of the scheme was better. After adjustment, the daily oil level in well area increased from 375 tons to 554 tons, and the water content decreased from 84.6% to 82.1%.