夏32断块储层精细描述及应用效果分析

Precise reservoir description and analysis of its application results in Xia32 fault block.

针对夏 32断块含油砂体多、储层平面及层间物性差异大、动用状况不均等问题 ,对储层进行了精细描述 ,实施了整体解剖和系统对比 ,细分了沉积单元 ,利用沉积微相特征分析并预测油砂体展布规律。根据储层描述研究成果 ,结合目前开发状况 ,进行了油砂体注采井网完善。通过钻调整井、油水井补孔、投转注等措施 ,增加注水储量2 30× 10 4t,增加可采储量 36× 10 4t。

Xia32 fault block contains a large number of oilbearing sand bodies with physical properties varying greatly both laterally and vertically. There exist unbalanced producing reserves. Thus the precise reservoir description is made in this block. The integral analysis and systematic comparison are implemented. The block is subdivided vertically into different sedimentary units. The extension rule of oil sand body is predicted using the characteristics of sedimentary microfacies. The improvement of the injectionproduction pattern is designed for this block based on this reservoir description results and producing performance. Eighteen adjustment wells are drilled with an average daily oil production for single well of 18t and cumulative oil production of 21×10 4t. Improving measures are taken in 138 layers and 15 injection wells are put into action. Good results are obtained with an increased flooding reserve amounting to 230×10 4t and an increased recoverable reserves of 36×10 4t. The development effect is good.