新民油田中洼北区块天然裂缝特征

Characteristics of natural fractures for northern Zhongwa block in Xinmin Oilfield

胡双全 刘文英 刘强鸿 许明旺

中原石油勘探局钻采处，河南 濮阳 475300

Drilling and Oil Production Engineering Department, Zhongyuan PetroleumExploration Bureau, SINOPEC,
Puyang 457001, China

利用大庆头台油田水平井取心观察的天然裂缝发育特征、注水井开发动态资料，以及新民油田中洼北区块2口探井油层压裂人工裂缝的监测结果，研究天然裂缝与人工裂缝的发育特征和决定其发育程度的地质因素，分析裂缝成因、分布规律，确定出中洼北新开发区块天然裂缝与人工裂缝的走向一致，均为东西向；以此结果确立中洼北区块合理的开发井网部署方案为：井排方向应平行于裂缝方向即东西向，且在井排方向上井距应拉大，以推迟后期注水产生的暴性水淹。

According to the natural fracture characteristics of the cores from a horizontal well, the developnent perfornent information of
injection wells in Toutai Oilfield in Daqing and the fracturing real-time inspection of two exploration wells in the northern block of
Zhongwa in Xinmin Oilfield, this paper analyzes the characteristics and the distributing rule of natural fractures and hydraulic
induced fractures and the geological factors which control the development and distribution. The strikes of natural fractures and
hydraulic induced fractures are identified in the block, which are all WE strike. Based on the result, the appropriate plan of
development pattern arrangement is established. The arrangement direction should be parallel with fracture direction. And the well
spasing should be widen on the line to delay the severe waterflooding during late water injection.