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通过对超前注水、同步注水、滞后注水进行了对比分析,肯定了超前注水的效果。甘谷驿油田西部注水试验已4年多了,4年多来反九点法注采井网,由于井距小、微裂缝发育、主裂缝明显,东西向油井在部分水淹或含水较高,而南北向油井压裂引效措施后产量不理想,稳产期相对较短,因此优化裂缝主向、侧向井距组合,适当调整注采井网,是提高甘谷驿油田西部注水试验井区效果的关键。
Through the comparison of advanced water injection, synchronous water injection and lag water injection, the effect of advanced water injection is affirmed. The water injection test in the western part of Ganguyi Oilfield has been more than 4 years. In the past 4 years, the anti-nine-point method has been used for injection and production of well patterns. Due to the small well spacing and the development of microcracks, the main fractures are obvious and the east- However, the yield is not ideal after the north-south oil well fracturing pilot project and the stable production period is relatively short. Therefore, the combination of the main and lateral well spacing of fractures is optimized, and the injection and production well patterns are properly adjusted to improve the effect of the injection well test in the west of the Ganguyi Oilfield The essential.