During the oil well production process, the main function of using screen casing for sand control completion is to control sand production and collapse of the production layer. However, the corrosion and scaling behavior of oil and gas wells will have an adverse impact on the service life and performance of slotted screens. This is because in the oil and gas well environment, the action of various chemicals and formation fluids will cause the screen casing to Corrosion and scaling occur on the surface, affecting its normal operation and filtration effect.
Corrosion issues:
There are various corrosive media in the oil and gas well environment, such as acidic substances, high temperature and high pressure environments, etc., which will corrode the material of the slotted screen pipe. Corrosion can cause damage, pores or even cracks on the surface of slotted screens, affecting their filtration and screening functions, and may also cause pipeline leakage or damage.
In response to corrosion problems, anti-corrosion measures can be taken, such as selecting corrosion-resistant materials, surface coating protection, regular inspection and maintenance, etc., to extend the service life of screen casing and ensure their normal operation.
Scaling problem:
The formation fluids present in oil and gas wells may contain various solid particles, sediments and salt substances. These substances will deposit and scale on the surface of the slotted screen tube, affecting the filtration effect and permeability of the slotted screen tube.
The scaling problem can be solved through regular cleaning and maintenance, selecting scaling inhibitors, optimizing the fluid handling system and other measures to ensure the normal operation and filtration effect of the slotted screen.
Comprehensive measures:
In order to solve the corrosion and scaling problems of screen casing during the production process of oil and gas wells, comprehensive measures need to be taken. The first is to select corrosion-resistant and wear-resistant materials during the design stage and provide surface coating protection for the screen casing ; the second is to conduct regular inspection and maintenance to detect and deal with corrosion and scaling problems in a timely manner; at the same time, appropriate measures can be taken Fluid treatment technology and scale inhibitors maintain the permeability and filtration effect of slotted screens.
In general, the use of slotted screens for sand control completion during the production process of oil and gas wells is an important means to effectively control sand production and collapse of production layers. However, in practical applications, attention needs to be paid to the impact of corrosion and scaling problems on slotted screens. , take corresponding protective and maintenance measures to ensure the service life and effectiveness of the screen casing and meet the production needs of oil and gas wells.