裂缝性低渗油藏调剖工艺适应性评价及效果分析

Adaptability evaluation and effect analysis of profile control technology in fractured low permeability reservoir

裂缝性低渗油藏开发难度较高,本文以奈曼区块为例,主要考虑该区块低渗透储层及人工与天然裂缝交错复杂的地质特征,结合目前存在的主要生产矛盾,开展水井化学调剖工艺适应性评价,并对现场应用效果进行分析。结果表明,所选用的调剖剂配方及施工参数在裂缝性低渗油藏中应用是可行的,能够满足现场施工需求,为下步区块推广应用调剖工艺提供了依据。

The development of fractured low-permeability reservoir is difficult.Taking Nai man block as an example,this paper mainly considers the complex geological characteristics of low-permeability reservoir and the intersection of artificial and natural fractures in this block,combined with the current main production contradictions,carries out the adaptability evaluation of water well chemical profile control technology,and analyzes the field application effect.The results show that the selected profile control agent formula and construction parameters are feasible in fractured low permeability reservoir.It can meet the needs of on-site construction.It provides a basis for the popularization and application of profile control technology in the next block.