低渗致密储层三维地质力学建模与压裂工程甜点优选方法  

Three-dimensional Integrated Modeling and Fracturing Engineering Sweet Spot Optimization Method for Low Permeability Tight Reservoirs

作　　者：刘文俊 刘伟[1] 邓九涛 彭成勇 黄兆鑫 谭强[1] LIU Wen-jun;LIU Wei;DENG Jiu-tao;PENG Cheng-yong;HUANG Zhao-xin;TAN Qiang(College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102200,China;CNOOC Research Institute,Beijing 100028,China)

机构地区：[1]中国石油大学(北京)石油工程学院,北京102200 [2]中海油研究总院,北京100028

出　　处：《科学技术与工程》2022年第25期10985-10991,共7页Science Technology and Engineering

基　　金：国家自然科学基金(52074313);国家科技重大专项任务(2017ZX05049-003-002)。

摘　　要：致密储层作为一类常见的非常规油气储层,其有效开发依赖于水力压裂这一储层改造措施。高效的储层压裂改造方案,压裂位置的选择是关键。介绍了一种低渗致密储层多数据协同的三维地质与力学属性一体化建模方法及相应的压裂工程“甜点”优选方法。利用地震数据协同测井解释资料获得储层的地质构造信息完成地质构造建模,并耦合利用测井资料反演的弹性模量、泊松比、断裂韧性等力学参数以及地应力分布,获得目标储层的三维力学属性体。在此基础上,分析和识别不同尺度上影响低渗致密储层压裂效果的主要因素,提出了一种多尺度多因素的低渗致密储层可压裂性评价方法,可实现三维尺度的储层可压裂性评价。该方法在山西某低渗致密气田的现场应用结果表明,压后产量指标与所提出的压裂层段可压裂性指数均值呈现良好的正相关关系,印证了所提出方法具有较高的现场应用价值,可为压裂方案的制定提供指导。As a kind of common unconventional oil and gas reservoir, the effective development of tight reservoir depends on a reservoir reconstruction measure of hydraulic fracturing. The optimization of fracturing position is the key in an efficient reservoir fracturing project. An integrated 3 D modeling method and the corresponding fracturing engineering sweet-spot optimization method for low permeability tight reservoirs based on multidata was introduced. Seismic and logging interpretation data were coupled to obtain the reservoir geological structure information as well as complete the geological structure modeling, and the mechanical parameters such as elastic modulus, Poisson’s ratio, fracture toughness and in-situ stress distribution retrieved from logging data were coupled to obtain the three-dimensional geological attribute model of the target reservoir. On this basis, combined with a multi-scale and multi-factor low permeability tight reservoir fracability evaluation method, three-dimensional reservoir fracability evaluation can be realized. The field application results of this method in a low permeability tight gas field in Shanxi show that the post-fracturing production index has a good positive correlation with the average fracturing index of the fractured formation, which confirms that the proposed method has high field application value and can provide guidance for the formulation of fracturing scheme.

关 键 词：低渗致密储层 地质工程一体化 压裂工程甜点优选 三维地质力学建模 

分 类 号：TE357[石油与天然气工程—油气田开发工程]