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Help improve the quality and efficiency of mature offshore oil fields and put my country’s first independently developed set of submarine water injection trees into operation

Help improve the quality and efficiency of mature offshore oil fields and put my country's first independently developed set of submarine water injection trees into operation -Help-improve-the-quality-and-efficiency-of-mature-offshore-oil

Before the water-injection tree enters the water, the operator is opening the valve of the water-injection tree.Photo provided by interviewee

Experts say that over time, the recovery rate of old oil and gas fields gradually decreases. Especially in producing oil and gas fields located in shallow seas, due to production layer deficit and insufficient mining energy, they need to rely on water injection, gas injection and other mining methods to improve recovery. As oil continues to be extracted from the seabed, the permeability of underground oil layers becomes worse and the formation pressure continues to decrease, so the oil often cannot flow out naturally. The water injection tree is like a “syringe”, which is an underwater water injection pipeline connecting the oil layer deep in the formation and the platform. The device can inject energy into the “capillaries” of the formation to drive oil and gas to flow to designated locations and increase oil and gas recovery.

Help improve the quality and efficiency of mature offshore oil fields and put my country's first independently developed set of submarine water injection trees into operation -1707514015_537_Help-improve-the-quality-and-efficiency-of-mature-offshore-oil

At the installation site of the water injection tree, the operators debug the equipment before setting it in.Photo provided by interviewee

According to Yan Bangchuan, project manager of CNOOC Zhanjiang Branch, the water injection tree put into use this time has innovatively designed hydraulic docking bushings to solve problems such as directional docking of vertical water injection trees and oil pipe hangers. At the same time, it cooperates with the development of large-diameter water-isolated high-pressure vertical Pipe, solves the problem of “acclimatization” of underwater wellheads installed on jack-up platforms, effectively improves operating efficiency, and verifies the safety and reliability of this domestically produced equipment.Compared with similar foreign products, the weight is reduced by 40%, the cost is reduced by 60%, and it can be widely used in shallow waters..

Help improve the quality and efficiency of mature offshore oil fields and put my country's first independently developed set of submarine water injection trees into operation -1707514015_268_Help-improve-the-quality-and-efficiency-of-mature-offshore-oil

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