The Test of CCUS Microseismic Detection Technology in Jilin Oilfield is Successful
On December 13, after a year of technical research, the CCUS microseismic detection technology of Jilin oilfield was successfully tested in the small well spacing test area, and 437 microseismic events were monitored in total, providing data support for the geological integrity evaluation of the CCUS test area.
This year, the Oil and Gas Technology Research Institute of Jilin Oilfield cooperated closely with DongfangGeophysical Exploration Company to select well Hei 79-4-5 at the edge of the block with a long gas injection time to carry out microseismic monitoring and judge the cap integrity of the CO2 flooding test area.
In recent years, Jilin Oilfield has accelerated the pace of CCUS construction. With the increase of carbon dioxide storage year by year, higher requirements are put forward for the monitoring of carbon dioxide storage in the test area. On the basis of the previous carbon flux and shallow well monitoring technology, the Oil and Gas Technology Research Institute expanded the application of the tower type vorticity micrometeorological monitoring technology to achieve regional real-time dynamic monitoring, and adopted mobile vorticity monitoring and surface carbon flux fixed point monitoring in key areas, basically meeting the needs of carbon dioxide storage monitoring. Since last year, the Oil and Gas Technology Research Institute has carried out field tests of CCUS microseismic monitoring technology, designed 12 level geophone underground, and completed the location of sound source signals near Wells. Combined with regional injection-production well dynamics, the effective microseismic events obtained by monitoring have been interpreted, and the integrity of the cap layer and the migration law of injected carbon dioxide in the monitoring area have been further clarified.