摘要
以大井丛水平井为主体的小井场平台开发模式在致密油气、页岩油气等非常规油藏开发领域的作用越来越大。针对该开发模式的油藏描述方法还不够成熟,制约了该类型平台的推广应用。基于控制井和水平井测井资料的分析,探索了一种适合在大井丛水平井平台推广的油藏描述方法。该方法利用丰富的测井资料信息,以测井沉积旋回分析作为层序地层研究的切入点来确定小层划分标准,以测井沉积微相识别结果确定岩相砂体边界,以测井精细储层评价计算储层参数,以测井纵横波资料计算岩石力学参数评价油藏工程品质,通过建立高精度三维地质模型实现井区油藏三维精细描述。结合测井、地质、工程资料进行一体化评价,应用三维地质模型直观展示水平井轨迹与油藏甜点接触关系,为水平井压裂选层、规模高效开发提供技术支撑,助力大井丛水平井平台效益建产。该方法已在长庆油田H60平台进行试验,取得良好效果。
The development mode of small wellsite platform with cluster horizontal wells plays an increasingly important role in the development of unconventional reservoirs such as tight oil and shale oil&gas.However,the reservoir description method for this development model is not mature enough,which restricts the popularization and application of this type of platform.Based on the logging data of control wells and horizontal wells,we explores a reservoir description method suitable for the application of cluster horizontal well platform.This method uses abundant logging information,takes logging sedimentary cycle analysis as the breakthrough point of sequence stratigraphy to determine the criteria of small layer division,and uses logging sedimentary microfacies identification results to determine the lithofacies sand body boundary.In this paper,a complete set of reservoir description method for large cluster horizontal wells is formed by using fine reservoir evaluation and rock mechanics parameters.The three-dimensional fine description of reservoir in well area is realized by establishing a high-precision three-dimensional geological model.Combined with logging,geology and engineering data,the integrated evaluation is carried out,three-dimensional geological model is applied to intuitively display the contact relationship between horizontal well track and reservoir dessert,which provides technical support for horizontal well fracturing layer selection,large-scale and efficient development,assisting the benefit construction and production of cluster horizontal well platform.The method has been tested on H60 platforms in Changqing oilfield,and achieve good results.
作者
赵毅
成志刚
张树东
朱涵斌
李戈理
陈玉林
刘行军
ZHAO Yi;CHENG Zhigang;ZHANG Shudong;ZHU Hanbin;LI Geli;CHEN Yulin;LIU Xingjun(Applied Research Institute, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710077, China;Changqing Branch, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710201, China)
出处
《测井技术》
CAS
2021年第2期143-148,共6页
Well Logging Technology
关键词
丛式水平井
油藏描述
页岩油
三维地质建模
甜点预测
长庆油田
claster horizontal well
reservoir description
shale oil
three-dimensional geological modeling
dessert to predict
Changqing oilfield
