solid centralizers have proven to be the casing centralizer which eliminates secondary cement squeezing and assures zonal isolation. The solid straight blade design promotes self-cleaning in the wellbore with less fluid restrictions and drag than bow centralizers and allows pipe to rotate and reciprocate freely inside the centralizer. Solid Centralizers are the superior casing accessories, delivering 360º total cement coverage.
solid centralizers are available for casing sizes ranging from 4 ½” to 20”.
Rigid centralizers are an integral part of the cementing process. They provide the mechanism that centers the casing in the hole and allows uniform cement flow around the casing to help protect it at all points. Several styles of centralizers are available for matching different well specifications and hole sizes, including turbulence generating designs that help clean the annulus and distribute the cement more evenly and uniformly. All models offer ample clearance for fluid passage and are extra effective in centering the casing, even in highly deviated holes and improve cement flow by reducing the effects of channeling.
Features for spiral blade rigid centralizers:
a. Reducing gouging and scraping of formation.
b. Maximum wall contact.
c. Spiral blades allow better cement coverage.
Features for straight blade rigid centralizers:
a. Easy to install.
b. Less flow restriction than other centralizers.
c. Unaffected by lateral load.
d. Casing moves freely within the centralizers.
e. Reducing differential sticking and casing contact.
Parameter
Model
|
Max OD(mm)
|
ID(mm)
|
Length(mm)
|
4-1/2" x 6"
|
145
|
116.5
|
200
|
5" x 6"
|
145
|
129
|
200
|
5-1/2" x 8-1/2"
|
205-210
|
142
|
200/300
|
6-5/8" x 8-1/2"
|
205-210
|
171
|
200/300
|
7" x 8-1/2"
|
205-210
|
181
|
200/300
|
7" x 9-1/2"
|
225-235
|
181
|
200/300
|
7" x 9-5/8"
|
225-235
|
181
|
200/300
|
9-5/8" x 12-1/4"
|
300-305
|
248
|
200
|
13-3/8" x 17-1/2"
|
430-435
|
346
|
200
|
没有评论:
发表评论