大牛地气田储层伤害研究

Study on reservoir damage in Daniudi Gasfield

在油气田的钻探和开发过程中容易对储层造成伤害,如何解决这一问题,将直接影响油气田的产量。导致储层伤害的因素有许多,为减少大牛地气田在开发过程中对砂岩储层造成的伤害,文中对该区储层的伤害因素进行了分析研究。以下二叠统石盒子组的盒1、盒2、盒3段低渗透砂岩储层为研究对象,通过详细的实验分析认为,造成储层伤害的主要因素是碱敏和水锁伤害,且盒2、盒3段储层存在固相侵入以及较弱的盐敏、水敏伤害。针对大牛地气田储层伤害的因素提出相应的降低储层伤害的对策,从而为气田的生产实践提供依据,实现气田的高产、稳产。

It’s very easy to damage reservoirs in the process of drilling and exploring, and the damage will directly affect the output of gas field. In order to reduce this damage, it is necessary to analyze the factors of reservoir damage. Taking the low permeability sandstone reservoirs of the first, second and third members of Lower Permian Shihezi Formation as examples, based on the test analysis, it is believed that reservoir damage mainly caused by alkali sensitivity and water lock, and there exists solid intrusion and weak salt sensitivity, water sensitivity. Correspond countermeasure is proposed so as to provide basis for field production and ensure high and stable gas field production.