The function and application of centralizer are briefly analyzed

The centralizer is connected with the sucker rod,and the sucker rod centralizer plays a good correction role,which solves the serious problem of eccentric wear in oil Wells.At the same time,it can also play a wax scraping role,can expand the use of pipes,rods and pumps.Life expectancy and extended pump inspection cycles have effectively increased well production and reduced production costs.
Function features of casing centralizer:

1)The casing centralizer is basically in a folded state when running into the well,with a small outer diameter in the initial state,which reduces the risk of stuck well.

2)No downhole pressure opening.The opening pressure is only related to the pressure difference between the annulus inside and outside the wellbore.Hydraulic shear pin is opened underground for high reliability.

3)The elastic centralizer is made of spring steel with large deformation,large expansion diameter and large supporting force after expansion.

4)After opening,it has the locking function,which can stop before and after the opening in time,and can adapt to different degrees of reaming.

The application of casing centralizer products in the cementing process of oil and gas Wells,the medium degree of casing has a great impact on the cementing quality.The purpose of the casing centralizer is to center the casing as much as possible during the cementing process,thus improving the cementing quality.Because directional and horizontal Wells are widely used in reservoir development,there are many problems in the application of traditional rigid and elastic casing centralizers.