致密油水平井多级压裂后产能影响因素分析  

Analysis of Influencing Factors on Productivity after Multistage Fracturing to Tight Oil of Horizontal Well

作　　者：梅显旺 罗梅[1] 马威奇[1] 聂锴[2] 刘攀峰[2] 

机构地区：[1]大庆油田有限责任公司试油试采分公司,黑龙江大庆143412 [2]大港油田分公司石油工程研究院,天津300280

出　　处：《油气井测试》2016年第4期29-32,76,共4页Well Testing

基　　金：中国石油天然气股份有限公司油气勘探重点工程技术攻关项目"大庆探区低渗透及海拉尔盆地复杂岩性低渗透储层试油(含储层改造)工艺配套技术研究"(03B411402)部分内容

摘　　要：水平井多级压裂是低渗透致密储层提高产能和解决储量动用难等问题的重要技术措施,广泛应用于油气田勘探开发等领域。如何优化设置水平井多段裂缝,将决定压裂工具和工艺的选择,最终影响到压裂效果。以矩形边界油藏内压裂水平井为对象,在不同压裂裂缝形态的基础上,建立描述油藏与裂缝关系的物理模型和数学模型,并对其进行差分求解、编程。应用该模型对X井压后产能进行预测,预测产能与本井实际产能相吻合,证实建立的数值模拟模型可行。应用数模方法对影响水平井压后产能的地质和工程因素进行分析,研究储层渗透率、压裂段数、井底流压、裂缝半长和簇间距等因素对压后产能的影响,优化了水平井压裂的裂缝形态参数,从而更好地指导水平井压裂设计的编制,提高压裂水平井的施工效果和成功率。The multistage fracturing has been an important technique to improve the productivity of low permeability reservoir and solve the problem of hard reserves producing,which has been widely used in oil and gas field exploration and development. How to optimize the setting of multi section cracks in horizontal wells,determines the selection about fracturing process and tool,eventually related to the effect of fracture. Taking the fractured horizontal well in rectangular reservoir as studied subject,on the basis of fracture morphology of horizontal well fracturing,the physical model and mathematical model of reservoir and fracture are established to which of the differential solution and programming has be done. The model is applied to predict the productivity of X,the result is in good agreement with real yield,confirmed that the established numerical simulation model is feasible. The mathematical simulation method is used to study the geological and engineering factors that affect the productivity of horizontal well. The effects of reservoir permeability,fracturing segment number,bottom hole flowing pressure,fracture half length and spacing on the capacity of the reservoir are analyzed,and fracture parameters for horizontal well fracturing are optimized,so as to better guide the design optimization of horizontal well fracturing,improve the efficiency and success rate of horizontal well fracturing.

关 键 词：水平井多级压裂 数值模拟 产能影响因素 压裂优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]