基于Petrel三维地质建模的单元容积法优化及应用--以准噶尔盆地石西油田地热资源评价为例  

Optimization and Application of Unit Volume Method Based on Petrel Three-dimensional Geologic Modeling:A Case Study of Geothermal Resource Evaluation in Shixi Oil Field,Junggar Basin

作　　者：李冲达 管全中 芦慧[2] 张超[1] 黄荣华[1] 张浩竹 LI Chongda;GUAN Quanzhong;LU Hui;ZHANG Chao;HUANG Ronghua;ZHANG Haozhu(Chengdu University of Technology,Chengdu,Sichuan 610059;Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000)

机构地区：[1]成都理工大学,四川成都610059 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《地球学报》2025年第2期483-492,共10页Acta Geoscientica Sinica

基　　金：中国石油新疆油田分公司勘探开发研究院“准噶尔盆地地热资源潜力评价及有利靶区优选”项目资助。

摘　　要：单元容积法是地热资源评价的常用方法,通常是在二维平面上刻画参数,将各单元参数计算后累加总量,对于范围过大且不规则的研究区,计算精度降低且计算繁复。因此,本研究基于石西油田丰富的地质资料,利用地温参数模拟成孔隙度,建立Petrel属性模型(即地温场模型)对单元容积法进行优化,实现相关参数三维上的精细刻画,自动得出温差与体积的乘积,直接用于后续计算。优化的单元容积法计算的研究区10 km以浅地热资源量为2521.58×10^(18) J,对比基于COMSOL Multiphysics模型的热储法的计算结果低12.57%,优化的单元容积法突出了热储温度的不均匀性和体积估算的准确性,提高了计算效率和计算精度;基于地温模型分析了现今地温场的分布特征和主控因素,优选出研究区A、B两口井及周边区域为有利区。本研究明确了石西油田地热资源潜力及分布规律,为研究区合理利用地热资源提供科学依据。The unit volume method is a commonly used method for geothermal resource evaluation,which involves inscribing the parameters on a two-dimensional plane and accumulating the total amount after calculating the parameters of each unit.This reduces the calculation accuracy and is cumbersome for the large and irregular study area.Therefore,in this study,based on the rich geological data of the Shixi Oilfield,we use the ground temperature parameter to simulate the porosity,establish the Petrel property model(i.e.,ground temperature field model)to optimize the unit volume method,realize the fine inscription of the relevant parameters on the three-dimensional plane,and automatically derive the product of the temperature difference and volume,which can be used for subsequent calculations.The optimized unit volume method calculates the geothermal resources in the study area at a depth of 10 km to be 2521.58×10^(18) J,which is 12.57%lower than that calculated by the thermal storage method based on the COMSOL Multiphysics model.The optimized unit volume method highlights the inhomogeneity of the temperature of the thermal storage and the accuracy of the volume estimation,and improves the computational efficiency and computational accuracy.Based on the geothermal model,the distribution characteristics and main controlling factors of the present-day geothermal field are analyzed,and wells A and B and the surrounding areas in the study area are favorable zones.This study clarifies the potential and distribution patterns of geothermal resources in the Shixi Oilfield and provides a scientific basis for the rational utilization of geothermal resources in the study area.

关 键 词：准噶尔盆地 石西油田 地热资源 Petrel三维地质建模 单元容积法优化 有利区 

分 类 号：P314.3[天文地球—固体地球物理学]