二次加密后井网适应性研究

A study on well pattern suitability after the secondary infill drilling adjustment for a block of Daqing.

依据油田开发基本理论和方法，针对大庆北一区断东区块二次加密调整前后的井网特点，分别从水驱控制程度和波及系数两个方面，对加密前原井网和４种加密布井方案进行了井网适应性评价，给出最优布井方案。现场按所选最优布井方案实施加密调整措施后，该区块原油可采储量和采收率均有增加。利用灰色模型法对加密前后的开发指标进行了预测，预计加密后到２０００年，累积产油量增加７０８．２５×１０４ｔ，采收率提高４．２８％，表明二次加密布井方案是成功的，达到了改善油田开发效果的目的。图４表４参３（陈志宏摘）

Based on the principle and method of oilfield development and according to the well pattern feature before and after the secondary infilling adjustment in the eastern faulted area of North 1 block of Daqing oil field, well pattern suitability was evaluated in terms of water drive conformance and sweep efficiencies of old well pattern and of the four kinds of infill well pattern, giving out the best infill well pattern. After adjustment, both oil rate and oil recovery of this area increased indicating that the secondary infill well pattern is successful. The development indices before and after infill drilling have been predicted by grey modeling slowing that by the year of 2000, due to continuous infill drilling, the accumulative oil production will be increased by 708.25×10 4t. With an incremental oil recovery factor of 4.28%.