摘要
M油田CIII油藏含砾砂岩段大多数井采用一套层系笼统生产,由于层间矛盾严重,各层产能及采出程度差异大,对单井单层产量的准确劈分是剩余油研究的关键。常用的地层系数结合生产压差的方法进行劈分后定量吻合程度不高,因此结合生产实例建立动态劈产模型:1依据不同水驱模式、隔夹层、储层物性差异、产液剖面等六种因素进行CIII1-3层与下部CIII4-5油层间的产量劈分;2用试凑法建立了油井CIII1-3层累积产油量与油层有效厚度、含油饱和度关系的劈产动态模型,并提出该模型的应用原则。通过老井产液剖面、岩心渗透率等资料较好验证了劈产结果的可靠性,为下步剩余油挖潜提供了重要依据。
Most wells using a set of general production in CIII oil reservoir in gravel- bearing sandstone of Tazhong4 oilfield,due to serious interlayer contradiction,capacity of each layer and recovery degree difference is big,accurate split of every single production is the key to remaining oil research. The quantitative match degree is not high for commonly used formation coefficient with the method of production pressure differential split,so combining with the production instance to establish dynamic splitting model: 1Complete production split between the upper layer of CIII1- 3 and lower layer of CIII4- 5 according to different water drive model,interlayer insulation,reservoir property differences,liquid production profile data and other six aspects,2Refer to trial and error method to establish the well C III1- 3 layers of cumulative oil production and reservoir effective thickness,production dynamic model of the relationship between oil saturation. Meanwhile,the application principle of the model is presented. The old wells fluid producing profile and core permeability data are used to verify the reliability of production better,which provides an important basis for the next step of recovering of remaining oil.
出处
《新疆石油天然气》
CAS
2015年第4期36-40,3,共5页
Xinjiang Oil & Gas
关键词
M油田
石炭系
含砾砂岩段
剩余油
产量劈分
劈产系数
Tazhong4 oilfield
Carboniferous system
Gravel-bearing
Remaining oil
Production split
Splitting coefficient