煤层气地质工程一体化平台的建设构想

Construction concept of integrated geological engineering platform for coalbed methane

基于国内煤层气井产量普遍较低,煤层气行业地质研究与工程脱节较严重的实际情况,迫切需要引入地质工程一体化思路,有助于形成科学的工程决策。提出煤层气地质工程一体化平台的理论构想,规划设计平台的业务架构与功能架构,集成Petrel地质建模、Compass钻完井设计、MFrac压裂设计、CBM-SIM储层数值模拟等各类专业软件工具,建立地质工程一体化共享数据库、产气贡献监测平台和智能排采远程控制平台,固化标准的地质工程一体化技术工作流程,并建立相应的专业知识库。通过平台的建设打通煤层气勘探开发上下游的专业壁垒,实现全流程数据与成果共享,打造集煤层气开发的地质评价、工程设计优化、数据共享于一体的服务平台。以煤储层三维地质模型为基础,开展地质及煤储层综合评价研究,对钻井、固井、压裂、排采等工程作业方案进行设计及动态优化,集成气井产气贡献监测和智能排采远程控制系统,实现煤层气地质工程一体化和项目全生命周期管理,同时可以减少重复工作量,提高煤层气勘探开发工程效率和气井产量,实现降本增效。

The production of coalbed methane(CBM)wells in China is generally low,and the CBM geological research is seriously divorced from the engineering,so it is urgent to introduce the idea of geological engineering integration,which is helpful to form a scientific engineering decision.In this paper,the idea of constructing a CBM geological engineering integration platform is proposed,and its business framework and function framework are built.Various professional software tools are integrated,such as Petrel for geological modeling,compass for drilling and completion design,MFrac for fracturing design,and CBM-SIM for reservoir numerical simulation.An integrated shared database of geological engineering,a gas production contribution monitoring platform,and a remote control platform for intelligent drainage are established.The standard workflow for geological engineering integration technology is solidified,and the corresponding professional knowledge base is established.On the platform,professional barriers between the upstream and downstream of the CBM exploration and development are removed,and all the process data and results are shared to create a service platform of CBM development geological evaluation,engineering design optimization,and data sharing.Based on the 3D geological model of coal reservoirs,a comprehensive evaluation of geology and reservoirs is carried out.The drilling,cementing,fracturing,drainage and other engineering operation schemes are designed and dynamically optimized.The gas production contribution monitoring and intelligent drainage and production remote control system are integrated to realize the integration of CBM geological engineering and the whole life cycle management of the project.At the same time,the repetitive workload can be reduced to improve the efficiency of CBM exploration and development engineering and the production of gas wells,resulting in reduced cost and increased efficiency.