摘要
根据中国致密油的主要特征,结合近年来致密油勘探取得的成效,分析有效开发面临的主要挑战,探索致密油开发的关键技术方向。中国致密油以陆相沉积为主,分布面积偏小、物性差,不同盆地致密油地质特征差别较大,但低孔、低渗、低压特征突出,与海相沉积致密油存在较大差异,有效开发面临产量低、采收率低、效益差等多方面的挑战。在近3年技术攻关和现场试验取得认识的基础上,为实现致密油的规模效益开发,提出了以水平井规模重复"压采"开发为主导技术的一体化开发模式,主要包括"一体化"设计、"平台式"长水平井钻井、"规模化"体积压裂、"重复式"改造、"控制式"采油、"工厂化"作业、"集中式"地面建设等关键技术。建议重点加强致密油开发基础理论、实用开发技术、致密油开发全生命周期经济技术评价等方面的研究工作。
Based on the main geological features and technical breakthroughs made in tight oil exploration, the major challenges facing tight oil development are analyzed, and the key technical trend for tight oil development is discussed in this paper. Mainly found in continental deposits, tight oil reservoirs in China feature small area, poor physical properties, big differences in geological characteristics between different basins, but low porosity, low permeability and pressure in general. In contrast to marine tight oil, tight oil in continental deposits faces such challenges as low production and recovery, and poor economics. Through nearly three years of research and pilot test, an integrated development mode with repeated fracturing of horizontal wells as the principal technique has been proposed, which includes integrated design, platform long horizontal well drilling, massive volume fracturing, re-fracturing stimulation, controlled production, factory-like operation, concentrated surface construction etc. It is recommended that study be strengthened on basic tight oil development theory, practical development technologies, and economic evaluation of tight oil development over the whole life cycle.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2014年第2期198-205,共8页
Petroleum Exploration and Development
基金
中国石油致密油成藏条件与关键配套技术攻关项目(101013kt1009)
关键词
中国陆相致密油
地质特征
有效开发
关键技术
水平井重复“压采”
continental tight oil
geological characteristics
effective development
key techniques
repeated fracturing of horizontal wells
