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随着石油勘探技术及油层改造技术的不断提高以及我国能源发展战略的需要,低渗、特低渗透油藏的开发逐渐成为我国陆上石油工业稳定发展的重要潜力,同时也是我国未来石油可持续发展的重要技术方向。而特低渗透油藏的开发特点是储集层的物性较差,潜在裂缝或显裂缝较发育,油井一般无自然产能或很低,需要压裂改造后进入投产;天然能量很少,需要进行注水之后保持地层能量。所以,只有对特低渗透油藏进行注采井网的合理部署及优化设置才能充分发挥特低渗透油藏应有的开发价值。本文以安塞油田化子坪区块这一典型的特低渗透油藏为例,提出了其注采开发井网的设置与优化措施。
With the continuous improvement of petroleum exploration technology and oil layer reconstruction technology and the need of energy development strategy in our country, the development of low permeability and ultra-low permeability reservoirs has gradually become an important potential for the stable development of China’s onshore oil industry and the future of China’s oil sustainability Development of important technical direction. However, the development of ultra-low permeability reservoirs is characterized by poor physical properties of reservoirs, development of potential fractures or obvious fractures, lack of natural productivity or low oil wells, and their need to be put into operation after fracturing and reformation; natural energy is small and needs to be carried out Maintain formation energy after water injection. Therefore, only reasonable deployment and optimization of well pattern of ultra-low permeability reservoirs can fully utilize the development value of ultra-low permeability reservoirs. This paper takes the typical ultra-low permeability reservoir in the Hengziping area of Ansai Oilfield as an example, and puts forward the setting and optimization measures of well pattern of injection and development.