油砂山薄互层复杂断块油藏开发层系细分研究

油砂山油田属于长井段薄互层复杂断块油藏,具有油层数量多、纵向跨度大、砂泥岩薄互层、非均质性强等特点。针对油砂山油田目前开发中存在的含水上升快、储量动用程度低、注采系统不完善、注水效果差等问题,以油田探明地质储量为物质基础,依据细分层系可行性研究,确定了油藏分断块、分层系的细分开发方案,实施后取得了明显的开发调整效果。

Subdivision study of development layer series in complex fault block with thin inter-bedded reservoirs of Youshashan oilfield

Youshashan oilfield belongs to complex fault block oil reservoirs with thin inter-bedded layers and long intervals,being of the characteristics of multiple oil layers,large longitudinal span,thin sand-shale inter-bedded layers,strong heterogeneity,etc.Aiming at the problems of Youshashan oilfield development at present such as quick water cut rising,low degree of reserves producing,imperfect injectionproduction system,and poor water injection effect,on the material basis of oilfield verified geological reserves,according to feasibility study of layer series subdivision,the subdivision development plan by block and layer series has been established.And therefore,obvious development adjustment results have been achieved after implementation.