涧峪岔油田提高采收率技术研究

涧峪岔油田属于典型低渗透油藏,经过5年多的注水开发,储层孔隙结构和渗透率发生了很大变化。层内及层间矛盾进一步加剧,形成了高渗带及渗流优势通道,水驱状况和剩余油分布日益复杂,油田稳产难度不断加大,综合含水83%。这不仅大大影响了原油的采出程度,而且增加了采油成本。为了提高水驱采收率,必须对大孔道和高渗透层进行封堵。调剖技术作为降低油井含水和提高原油采收率的有效手段,成为涧峪岔油田持续发展的关键。

Research on Technologies of Enhanced Oil Recovery in Jianyucha Oilfield

Jianyucha oilfield is a typical low permeability reservoir, after more than five years waterflooding development, reservoir void structure and permeability ratio have undergone great changes. Contradictions of inner layer and between layers further aggravated, forming high permeability zone and seepage advantage channel, water flooding condition and remaining oil distribution are becoming more and more complex, the difficulty of stable oil field production is increasing, comprehensive water cut is about 83%, which not only can greatly affect the recovery degree of crude oil, but also can increase oil production cost. In order to improve water flooding recovery, large pore path and high permeability layer must be blocked. The profile technology as an effective means of reducing water cut and enhanced oil recovery has become the key technology for Jianyucha oilfield sustainable development.