CCUS technology is a crucial technology for achieving the goal of “dual carbon”

involving process such as capture

transportation

injection

extraction and re-injection. Shengli Oilfield has developed essential engineering technologies for transportation and injection through years of exploration. To manage the phase changes of CO

2

and the risks of long-distance leakage due to pressure loss and temperature variations

a safety transportation technology for long-distance CO

2

pipelines was es

tablished. This technology is based on phase state control

ensuring efficient and cost-effective transportation. developed China’s first casing pipeline transport pump; and built China’s longest long-distance supercritical pressure CO

2

pipeline

which makes up for the shortcomings of the long-distance CO

2

transport in China. In order to meet the needs of high-pressure injection of large-displacement CO

2

in the demonstration project

China’s first high-pressure dense-phase injection pump has been developed

realizing high-pressure dense-phase injection of 40 MPa. In view of the problems of high injection pressure

high gas-to-liquid ratio

low pumping efficiency

and corrosion of CO

2

the engineering process technology of injection and extraction supporting such as safe injection of gas pipeline columns for pressure-free wells

multi-functional oil recovery pipeline columns

and corrosion prevention of CO

2

repulsion has been formed to realize high-efficiency

safe injection and extraction and long-lasting corrosion protection. China's first multi-field

multi-node

one-million-ton CCUS demonstration project integrating pipeline transport engineering

injection equipment

flooding and sequestration

injection-extraction process

and gathering-transmission and re-injection

has been operating well and realizing “smooth

safe

efficient and green” operation in all aspects. This summary of the one-million-ton CCUS transportation-injection-extraction process and supporting equipment in Shengli Oilfield is intended to provide reference and guidance for the construction of subsequent CCUS project.