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通过注水保持油层压力的方法开发非均质油藏,不可避免会造成油井含水或部分油井水淹.注入水窜入油井时,不管低渗透层是否受到开发,大部分注入水进入到高渗透层,因而使低渗透层在开发过程中采油速度很慢,或是基本未投入生产.为了降低产水量,保持或提高采油量,必须对已开发的非均质油藏实施相应的堵水调剖措施,防止注入水沿高渗透带水锥突进到油井,影响水驱采收率.本文建立了应用模糊综合评判方法优选非均质油藏调剖井和层的数学模型,通过实例分析表明,运用综合评判方法优选调剖井和层是一种客观有效的方法,该评价方法计算方便,易于操作和推广.
The development of heterogeneous reservoirs by injecting water to maintain reservoir pressure inevitably results in the flooding of wells or flooding of some wells.When injecting water into an oil well, most of the injected water enters the high permeability layer, regardless of whether the low permeable layer has been developed , So that the low permeability layer in the development process of oil production is very slow, or basically not in production.In order to reduce water production, maintain or increase oil production, the reservoir must be developed heterogeneous reservoir water profile control Measures to prevent the injected water from penetrating into the oil well along the water cone of the high permeable belt and affecting the waterflood recovery.The paper established a mathematical model to optimize the profile control wells and layers of heterogeneous reservoirs by fuzzy comprehensive evaluation method, It is an objective and effective method to optimize well and layer by using comprehensive evaluation method. The evaluation method is easy to calculate, easy to operate and popularize.