二连地区阿南低渗透砂岩油藏高效开发技术

阿南油田为低渗透、复杂断块油藏、油藏物性差，构造破碎，非均质性强，开发难度比较大。随着油田的开发，逐步暴露了油水关系复杂，、注水效率较低，水驱动用程度低、油田产量下降快、受效油井含升快等问题。针对上述剖。在深入研究地质资料和剩余油分布的基础上，提出了一系列有针对性比较强的调整措施，如：细分开发层系、加密井网、完善注采关系，油层改造，调整注采结构等，获得了较好的控水稳油效果，使得阿南油田连续9a稳产在700t/d左右，采油速度稳定在1．6％以上，确保了该油田的高速效开发。

High-efficiency Development Technique for Anan Low Permeable Sandstone Reservoir in Erlian Area

Anan Oil Field is a low permeable and complicated fault block reservoir with a poor property, crushed structure, apparent heterogeneity and difficult development. With the development of the oil field, some problems appear, such as complicated relation between oil and water, low efficiency of water injection, low producing efficiency of water flooding, rapid decline of oil production, rapid increase of the water cut in good producing wells. This paper studies the geologic data and residual oil distribution and proposes a series of adjustment measures including subdividing development series of strata, infilling patterns, perfecting injection production relation, reservoir reform and adjusting injection production structure. The measure obtains a nice effect of stabilizing oil production and controlling water cut. Anan Oil Field keeps a stable production of 700 t/d and production rate of more than 1.6% for 9 years.