基于人工裂缝地震预测的储层物性地质建模方法及应用  

Geological Modeling Method and Application of Reservoir Physical Properties Based on Artificial Fracture Seismic Prediction

作　　者：张学娟 冯丽 雍丹丹 王涵 冯庭乐 佘海燕 ZHANG Xuejuan;FENG Li;YONG Dandan;WANG Han;FENG Tingle;SHE Haiyan(School of Petroleum and Natural Gas Engineering,Chongqing Institute of Science and Technology,Chongqing 400000,China)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆400000

出　　处：《能源与节能》2023年第10期14-17,21,共5页Energy and Energy Conservation

基　　金：重庆市自然科学基金面上项目“基于压裂效果的页岩脆性定量评价方法研究”(cstc2021jcyj-msxmX0984);重庆科技学院科技创新基金项目“低渗储层物性改造地震预测研究——以西峰油田X井区为例”(YKJCX2120118);重庆科技学院科技创新基金项目“高13区块扶杨油层致密储层地震预测方法研究”(YKJCX2220120)。

摘　　要：西峰油田西41井区长81油层组属于低孔特低渗储层,天然裂缝不发育,油藏开发已借助压裂技术对储层进行改造,为了有效预测研究区目的层剩余油分布,需要对压裂后储层物性发生的变化进行精细刻画。利用压裂后采集的地震数据,采用五维地震裂缝预测技术预测人工压裂后地层裂缝信息;以压裂前井数据作为基质模型建立的基础数据,以压裂后五维地震裂缝预测结果作为裂缝信息,建立人工压裂后储层物性地质模型;根据油田动态数据模拟试算拟合度情况分析物性预测建模结果。分析结果表明,基于人工裂缝地震预测的储层物性建模方法建立的油藏模型,全区日产油量指标及全区综合含水指标模拟试算拟合度均较高,该方法建立的压裂后储层物性地质模型能够反映地层实际地质情况。The Chang 81 oil reservoir group in the West 41 well area of Xifeng Oilfield belongs to a low porosity and ultra-low permeability reservoir,with underdeveloped natural fractures.The reservoir development has been transformed using fracturing technology.In order to effectively predict the distribution of remaining oil in the target formation in the study area,it is necessary to finely characterize the changes in reservoir properties that occur after fracturing.In this paper,the seismic data collected after fracturing were used to predict the fracture information of the artificially fractured formation using five-dimensional seismic fracture prediction technology;the pre-fracturing well data were used as the base data for matrix model establishment,and the five-dimensional seismic fracture prediction results after fracturing were used as the fracture information to establish a geological model of the reservoir properties after artificial fracturing;the results of the physical property prediction modeling were analyzed based on the simulated trial fit of the oilfield dynamic data.The analysis results show that the reservoir model based on the seismic prediction of artificial fractures has a high fit of the daily oil production index and the comprehensive water content index in the whole area,and the geological model of reservoir properties after fracturing established by this method can reflect the actual geological conditions of the formation.

关 键 词：低渗储层 人工压裂 裂缝建模 物性预测 地质模型 

分 类 号：TE19[石油与天然气工程—油气勘探]