Advantages of screen casing sand control technology

In recent years, with the rapid development of the petroleum and mining industries, the maturity of oil well drilling technology in desert areas, the increased efforts in the mid- and late-stage development of oil fields, the rise of large-scale offshore oil production, and the vigorous development of geothermal wells, brine wells, and deep water wells, the demand for screen casing consumption has continued to increase. The traditional drilling and production process of drilling, casing pipe, and blasting and perforating can no longer adapt to complex terrain. Due to the need for modern drilling and production technology with high efficiency and high recovery rate, screen casings have been widely promoted and used in underground liquid drilling and production in the mining industry.

What is screen casing sand control technology?

The basic principle of screen casing sand control technology is to set a screen casing or screen casing outside the production string to prevent formation sand from entering the inside of the string. The screen casing is usually made of metal mesh, wire wrap or porous material, and has a certain strength and wear resistance. Screen casing sand control technology is an important technical means widely used in the field of oil and gas extraction. Like slotted casing, the main purpose of the screen casing is to prevent sand in the formation from entering the production string to ensure the normal production of oil and gas wells. Screen casing sand control technology has many forms and processes, each with its unique advantages and scope of application.

The key role and advantages of screen casings in sand control operations

Screen casings are widely used in the regeneration of old wells in oil exploration, new oil wells and exploration (test) wells, off shore oil production wells and pumping pipes, and are used for horizontal wells, side drilling wells, radial branch wells or open holes, gravel-filled screen casing completions, and limited sand control. In people's daily lives, geothermal wells, salt water wells, drought-resistant wells and domestic water wells also use screen casing for limited sand control. The general vertical shaft uses circular slit (hole) screen casing instead of blasting perforations to avoid many troubles caused by bullet perforations. For this reason, it is also widely promoted and used at home and abroad.

Screen casings are key equipment for underground sand control, which has a direct impact on sand control quality, cost and oil well production. Once the screen casing fails, the oil well will stop producing sand, causing the entire sand control operation to fail. Therefore, choosing a suitable screen casing and ensuring its stability and durability are the keys to the success of sand control operations.

Advantages of screen casing in sand control

High-efficiency sand control: Screen casing sand control technology can effectively prevent formation sand from entering the production pipe string, reduce the sand content in production, and ensure the normal production of oil and gas wells.

Wide adaptability: Screen casing sand control technology is suitable for various complex formations and different types of oil and gas wells, including offshore oil fields, onshore oil fields and shale gas wells, etc., and has wide adaptability.

Increase production: By using screen casing sand control technology, the production of oil and gas wells can be significantly increased. Effective sand control measures reduce the sand content in production, reduce production resistance, and increase the production of oil wells.

Extend life: Screen casing sand control technology can effectively reduce the wear of sand on production pipes and equipment, extend the production life of oil and gas wells, and reduce the frequency of maintenance and replacement of equipment.

Cost-effectiveness: Although the initial installation cost of screen casing sand control technology is high, its long-term high-efficiency sand control effect can significantly reduce the maintenance and repair costs in production and improve the overall economic benefits.

Comprehensive sand control technology: Combining multiple sand control technologies, such as chemical sand control and mechanical sand control, to form a comprehensive sand control system to improve the sand control effect. For example, while using screen casing sand control, chemical sand control agents are injected to further prevent sand from entering the production pipe column.

Application examples of screen casing sand control technology

In the application of oil field wells, the screen casing high-pressure extrusion gravel packing sand control technology has shown remarkable results. For example, in the sand control operation in the Yanmu West area, this technology not only effectively suppressed the clay expansion in the formation, but also significantly improved the permeability of the near-well area and increased the water injection volume of the well, indicating that this technology has good promotion value.

The screen casing sand control technology has shown remarkable results in the application of oil field wells, with the advantages of high success rate, long effective period, wide adaptability, no pollution to the formation, good sand control effect, etc.Screen casing sand control technology plays an important role in the development of oil and gas fields. Its efficient sand control effect, wide adaptability and significant economic benefits make it the preferred technology for sand control operations in oil and gas wells.