Research progress on deep treatment and reuse technology of fracturing flowback fluid
摘要
With the wide application of fracturing technology in the development of unconventional oil and gas fields, the fracturing flowback fluid with high COD content, high mineralization and high suspended solids generated during the fracturing process has also increased. Difficulty and high cost of fracturing flowback fluid treatment have become one of the key factors restricting the efficient and economic development of oil and gas fields. The deep treatment and reuse technology of fracturing flowback fluid has become a focus of attention in the oil and gas extraction industry. In this paper, the treatment methods and research status of fracturing flowback fluid of domestic and abroad were reviewed from the aspects of pretreatment,advanced oxidation treatment, biological treatment, desalination technology and combined treatment method. The research status of different treatment technologies was analyzed and summarized, and the relevant issues of deep treatment and reuse in fracture flowback fluid were further elaborated, the trend of the deep treatment and the future development direction of fracture flowback fluid were elucidated.