雷家地区致密油储层单井压后产能预测研究

Productivity Prediction for Single Well After Fracturing of Tight Oil Reservoir in Leijia Area

为提高雷家地区致密油产建效益,降低投资风险,需建立较为准确的致密油单井压后产能预测模型。在对雷家地区沙四段致密油地质背景的剖析和储层特征研究的基础上,进一步分析储层品质和工程品质两方面因素对致密油单井压后产能的影响,筛选出包括储层品质和工程品质中的裂缝属性等致密油单井压后产能主要影响因素,进而通过数值模拟建立致密油储层压后单井产能预测模型,预测值与实际试油产量相对比,符合率较高,综合预测符合率达82%,为今后致密油储层单井压后产能预测提供一项重要的参考指标。

In order to improve the production and construction benefits and reduce the investment risk,a more accurate productivity prediction of tight oil well after fracturing in Leijia area should be built.Based on the analysis of the geological background and reservoir’s characteristics of the tight oil in E 2S 4 formation,Leijia area,this paper further analyses the influence of the reservoir quality and the engineering quality on the well’s production after fracturing of tight oil reservoir,screens out the main factors of the well’s production after fracturing of tight oil reservoir,including reservoir quality and fracture attributes of engineering quality,and establishes the prediction model by numerical simulation.The prediction model of single well productivity has a high coincidence rate with the actual production test.The comprehensive prediction coincidence rate is 82%.It provides an important reference index for the productivity prediction of single well after fracturing of tight oil reservoirs in the future.