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China Petroleum & Chemical News.
com.
A few days ago, the large-diameter layered sand control intelligent water injection technology implemented by the Shengli Oilfield Petroleum Engineering Technology Research Institute was successfully tested in the CB25GB-2 well of the marine oil production plant, marking the construction of the CB20C intelligent injection-production demonstration zone in the Shengli Offshore Oilfield Take a big step forward
.
Focusing on the overall planning requirements for the construction of the intelligent injection-production demonstration zone in the oilfield, Shengli Oilfield planned 1-2 injection-production demonstration zones in offshore oilfields for the first time, and specially established an offshore intelligent injection-production project team, and initially selected the CB20C well zone for demonstration zone construction
.
Irregular area injection-production well pattern is adopted in this block, with perfect well pattern, high injection-production correspondence rate, high degree of subdivision, but high water cut, low formation energy level, prominent inter-layer contradiction, unbalanced injection and production, and frequent deployment is required
The intelligent stratified sand control and stratified injection-production technology can realize the testing and control of the stratified production parameters of oil and water wells, real-time grasp the production dynamics and output conditions of each oil layer, deepen the understanding of reservoir productivity, and meet the requirements of energy saving and consumption reduction
.
Through the intelligent separation and prevention of injection technology, precise injection can be achieved, the layered injection-production ratio can be optimized, and the liquid production structure can be improved.
In response to the situation of the factory's CB25GB-2 well, the technicians successively designed series of sand control pipe strings with different diameters such as 108/118 mm, and hand-lost technology, and integrated them with the existing cabled intelligent water injection technology.
The completion operation is strictly controlled.
After three days and three nights of uninterrupted construction, the well has been successfully completed.
The technical advantages and work attitude have been highly recognized by the on-site construction party
.
At present, well CB25GB-2 has passed layered monitoring, and each layer has reached the injection allocation requirements, and the implementation effects of the corresponding oil wells are being closely tracked
