地质工程一体化理念在南海高温高压井的实践

doi:10.3969/j.issn.1672-7703.2020.02.014

摘要/Abstract

摘要： 中国南海西部高温高压区域油气资源丰富，该区块主要目的层埋深超过4000m，地层压力系数大于2.2，温度在200℃左右，勘探开发作业难度巨大，常规作业模式无法满足高温高压井作业要求。基于此，针对高温高压井地质及工程特征，从管理创新、技术优化和大数据等方面提出南海高温高压井地质工程一体化理念及技术体系。研究及实践表明：通过地质工程一体化管理与设计优化钻井流程和取资料方案，建立地质工程一体化大数据库实现多源信息共享，研究地质工程一体化预测、监测及有效控制技术，可有效解决南海高温高压井地质及工程问题。探索形成的 “随钻声波、中途VSP 和随钻前视组合技术”“地震、钻井、随钻测井、录井、中途VSP、随钻前视组合技术六位一体预监测技术”“地质工程智能监测、安全预警体系”等一体化特色作业体系在层位深度、异常高压、钻井情况等的精细预测、监测和控制方面取得了较好的应用效果。未来可通过进一步建设大数据平台和智能化勘探—开发—钻完井方案，深化地质工程一体化的应用，助力类似复杂油气资源的勘探与开发。

关键词: 地质, 工程, 一体化, 中国南海, 高温高压井

Abstract: The high temperature and high pressure area in the western South China Sea is rich in oil and gas resources. The buried depth of the main target layer in this area is deeper than 4000 m, the formation pressure coefficient is greater than 2.2, and the temperature is about 200 ?C. Therefore, exploration and development operations in this area are extremely difficult. The conventional operation mode cannot meet the operating requirements for high temperature and high pressure wells. Based on this situation, according to the geological and engineering characteristics of high temperature and high pressure wells, the concept and technical system of geology-engineering integration of high temperature and high pressure wells in the South China Sea is proposed, and described from the aspects of management innovation, technology optimization and big data. Research and practice have shown that the geological and engineering issues which affect high temperature and high pressure wells in the South China Sea can be effectively solved by optimizing the drilling process and data acquisition scheme through management and design of geology-engineering integration, establishing large databases for geology-engineering integration to achieve multi-source information sharing, and studying the prediction, monitoring and effective control technologies of geology-engineering integration. A series of integrated special operation systems have been formed, such as “combination technology of Acoustic-Logging-While- Drilling (ALWD), midway-VSP and look-ahead-while-drilling”, “the six-in-one pre-monitoring technology of seismic, drilling, logging-while-drilling, mud logging, midway-VSP, and look-ahead-while-drilling combination”, “geology-engineering intelligent monitoring and safety early-warning system”, etc. These operation systems have achieved good application results in fine prediction, monitoring and control of formation depth, abnormal high pressure and drilling conditions. In the future, further big data platforms and intelligent exploration – development – drilling and completion schemes will be established, the application of geology- engineering integration will be deepened, and the exploration and development of similar complex oil and gas resources supported.

中图分类号:

廖高龙, 郭书生, 胡益涛, 梁豪, 高永德, 王世越, 赵凯. 地质工程一体化理念在南海高温高压井的实践[J]. 中国石油勘探, 2020, 25(2): 142-154.

Liao Gaolong, Guo Shusheng, Hu Yitao, Liang Hao, Gao Yongde, Wang Shiyue, Zhao Kai. Practice of the geology-engineering integration concept in high temperature and high pressure wells in the South China Sea[J]. China Petroleum Exploration, 2020, 25(2): 142-154.

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