Vigor Non-rotating Casing Scraper

China Vigor Drilling Oil Tools And Equipment Co., Ltd. is one of the most professional manufacturers and suppliers of vigor non-rotating casing scraper in China, featured by competitive price and fast delivery. Welcome to buy high quality vigor non-rotating casing scraper in stock here from our factory.

 

Vigor Non-rotating casing scraper can be integrated as a part of a complete wellbore cleaning tool string used during the displacement process prior to running completion. It can be rotated and reciprocated without fear of damage to casing or tool due to the rugged design and the fact that it doesn't contain external bolts that could work loose under extreme conditions.

Vigor Non-rotating casing scraper consists of a onepiece Body, non-rotating Stabiliser and Scraper assembly. The main mandrel rotates through the stabiliser and Scraper assembly to avoid wear or damage to the casing during drill string rotation. The Scraper assembly is self-centralising inside the casing or liner to ensure equal cleaning at all well conditions. It's also rough, flexible and has the force needed remove and clean 360 degrees without rotation.

Benefits

- Clean 360 degrees without rotation

- Eliminates casing wear

- High strength mandrel

- Simple to run

- Multiple run possible

- Withstand drilling and milling operations

- Suitable for HTHP wells and can withstand chemical or acid attack

 

Features

 

- High Temperature Available(392℉-482℉)

- One piece mandrel

- Non rotating stabilizers

- Non rotating center sleeve

- No external nuts or bolts

- Extra large bypass areas for eliminating flow restriction

- Standard drill pipe connections

 

✔ Effective Debris Removal – Efficiently scrapes off cement, mud, and other deposits from casing walls, ensuring a clean wellbore.

✔ Non-Rotating Design – Operates without rotation, reducing wear and tear while maintaining casing integrity.

✔ Enhanced Durability – Constructed with high-grade materials for extended service life in harsh downhole conditions.

✔ Versatile Application – Compatible with various casing sizes and suitable for multiple stages of well construction.

✔ Improved Well Performance – Helps prevent formation damage and ensures better cement bonding for long-term well stability.

The Oilfield Rotating Casing Scrapers can be used to remove cement block, cement sheath, hard wax, various salt crystals and deposits, perforation burrs and iron oxide produced after casing corrosion on the inner wall of the casing, so that it can be unimpeded Various downhole tools are put into the ground. Especially when the annular space between the running tool and the inner wall of the casing is small, the next step of construction should be carried out after sufficient scraping. The use of casing scrapers has become an essential process in oilfield and oil-water well construction operations, the purpose of which is to improve the success rate of tool running and operation (such as the success rate of packer setting, etc.).

There are three types of casing scrapers: Anti-off casing scraper, Rubber tube type casing scraper and Spring type casing scraper. The anti-off casing scraper is composed of a main body, left and right rotating blades, springs, retaining rings, screws, blade seats, etc. The rubber sleeve casing scraper is composed of an upper joint, a blade, a rubber sleeve, a flushing tube, a lower joint, a shell, and a sealing ring. Spring casing scraper is mainly composed of shell (body), blade, pressure plate, screw, spring and other parts. The housing holds all parts. The upper end and the lower end have inner and outer drill pipe joint threads connected with tools such as drill pipes. In the middle section with the largest diameter, there are two rows of upper and lower alternately milling six large square grooves, and two symmetrical small square grooves at both ends of each large square groove are used to install blades, springs and pressure plates. The casing has water holes from top to bottom to circulate mud. One side of the blade is an arc-shaped surface with spiral grooves and service-shaped blades, and there are tapers at both ends to make the blade pass through each casing collar smoothly. Two lugs at the end of the cone define the dimensions of the scraper in its free state by means of pressure plates. There are four spring holes on the other side of the blade, and the reaction force of the compressed coil spring is the source of the radial feed force during scraping. The blade in the large square groove of the housing should be able to move freely up and down in the groove after being installed.

After the casing scraper is assembled, the outer diameter of the free extension of the blade and the knife plate is 2-10mm larger than the inner diameter of the scraped casing. When going into the well, the blade retracts the rubber tube or the spring barrel inwardly, and at this time, the maximum outer diameter is smaller than the inner diameter of the casing, so it can go down well smoothly. After entering the well, under the action of the elastic force of the rubber tube or spring, the blade and the cutting board move down close to the inner wall of the casing to cut the inner wall of the casing. Every reciprocating action cuts and scrapes the inner wall of the casing once, so that the purpose of scraping the casing can be achieved by reciprocating many times.

The casing scraper works in a fixed size casing space, so the adhesion on the inner diameter smaller than this size can be scraped off. This kind of scraping function is like a cylindrical reamer in mechanical processing, which uses a tough blade to cut off the cut material and smooth the cut surface. However, because the casing scraper works in a few thousand meters underground, the working environment is a small space, so it has its special working method. The maximum installation size of the casing scraper blade that has not entered the well is larger than the inner diameter of the casing. After entering the well, the blade must be pressed down and retracted by the spring. In addition, when scraping hard materials, it is impossible to scrape all to the inner diameter of the casing at one time, and it must be scraped several times. The inner diameter of the casing increases once each scraping, and the radial feed force is provided by the spring. The casing scraper is connected to the lower end of the downhole pipe string, and the up and down movement of the pipe string is the axial feed during the scraping process. Secondly, it can be seen from the structure of the blade that the blade of each spiral blade has two arc-shaped cutting edges, the inner and the outer. The margin surface, this larger area of the margin still has the effect of grinding and cutting the scraped cut surface during the up and down movement of the blade.

The purpose of the casing scraper is to remove the cement block, hardened drilling fluid, wax, sand, scale, burr, etc. in the casing, and create conditions for perforating, testing, sealing, and prolonging the production time of the production well.

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