Preliminary Study on Oil Test and Completion Technology of Over 9000 m Deep Wells—Taking Guole X Well as an Example

In recent years, the exploration and development of Tarim Basin has been developing in the vertical direction, and the oil and gas in deep and ultra-deep depths has gradually increased from 8000 m to 9000 m. The operating environment of oil test and completion is increasingly harsh, and the construction complexity is increasing, which puts forward higher requirements for oil test technology. In view of the actual situation of Guole X well, which is characterized by extreme depth, ultra-high temperature, high pressure, hydrogen sulfide, Overflow and leakage are in the same layer, extremely long open hole section and related technical difficulties, based on the idea of geological engineering integration, and on the basis of the force analysis and calculation of pipe string, Combined with the field practice, the integration of oil test and completion has been formed, which is suitable for “clean well completion, open hole long support, shallow completion string and soft stratification transformation” as the core, realizing the operational objectives of integration of testing, acid pressure, completion and oil production, and also exploring a set of mature, reliable and applicable oil test technology for ultra-deep high-temperature and high-pressure oil and gas Wells over 9000 m [1]. At the same time, the technology has certain guiding significance for similar high-temperature and high-pressure gas well testing.