Product overview
Casing centralizer is one of the necessary conventional casing accessories, upon well operations completion, the rational use of casing centralizer can play the role of
Reducing lower casing resistance phenomenon, making the casing smoothly down to the design position
Making casing centralizer centered within the well
Reducing the sticking phenomenon to make the annular space hydrostatic pressure balanced
Reduce channeling, improve the mud replacement efficiency, thus improve the cementing quality.
Bow spring centralizer
1. These Centralizers are designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in a Vertical, Horizontal and Deviated well 2. Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant to achieve the uniform hardness all over 3. Spec and performance index of bow spring casing centralizer meet API Spec 10D. The woven centralizer is connected by pin when in use, the unfolded centralizer can be stacked flatly for convenient storage and transportation.
Rigid centralizer
Rigid casing centralizer is used in deviated wells and horizontal wells. There are several blades on the rigid centralizer that can keep casing from contacting the wellbore wall Roller rigid centralizer which is most suitable for highly deviated wells and horizontal wells has two or three rollers in each blade. It can change slipping friction to rolling friction, so the Roller rigid centralizer greatly reduces the friction between casing and wellbore wall and let casing go to desired position smoothly
Cast aluminum centralizer
The smooth spiral 360 overlap solid vane design of centralizers provide max wall contact will not damage wellhead equipment, has high impact and shock resistance comand fluid swirl. The 30slope from the body to the height of the vane will eliminate scraping, or digging into the formation. The solid cast aluminum centralizers bine with high tensile and yield strengths
Casing Centralizer Technical Parameters
| No. | Type | Inside diameter (mm) | Height (mm) | Total height (mm) | Largest diameter (mm) |
| 1 | 5 “*12-1/4” | 128-131 | 105 | 690 | 330 |
| 2 | 5 ”*20” | 128-131 | 105 | 720 | 535 |
| 3 | 5-1/2 ”*7” | 142-148 | 55 | 650 | 215 |
| 4 | 5-1/2 ”*8-1/2” | 142-148 | 55 | 650 | 225 |
| 5 | 6 ”*8-1/2” | 156-158 | 55 | 650 | 235 |
| 6 | 7 ”*8-1/2” | 181-186 | 55 | 650 | 235 |
| 7 | 7 ”*9-5/8” | 181-186 | 55 | 650 | 255 |
| 8 | 7-5/8 ”*9-5/8” | 197-201 | 55 | 650 | 275 |
| 9 | 9-5/8 ”*12-1/4” | 250-255 | 55 | 650 | 330 |
| 10 | 13-3/8 ”*17-1/2” | 342-347 | 55 | 650 | 450 |
| 11 | 5-1/2 ”*8-1/2” | 142-148 | 110 | 650 | 225 |
| 12 | 7 ”*9-5/8” | 181-186 | 110 | 650 | 255 |
| 13 | 7 ”*8-1/2” | 181-186 | 110 | 650 | 235 |
| 14 | 5 ”*6-1/2” | 128-131 | 110 | 650 | 175 |
| 15 | 7-5/8 ”*9-1/2” | 196-200 | 110 | 650 | 250 |
| 16 | 10-3/4 ”*12-1/4” | 274-276 | 110 | 650 | 330 |
| 17 | 5 ”*6-1/4” | 130-132 | 110 | 650 | 170 |
| 18 | 9-5/8 ”*12-1/4” | 250-255 | 110 | 650 | 330 |
| 19 | 13-3/8 ”*17-1/2” | 342-347 | 110 | 650 | 450 |
| 20 | 5-1/2 ”*8-1/2” | 142-148 | 55 | 650 | 225 |
Other products supply
♦ pumping unit ♦ Tubing pump/sucker rod pump and accessories ♦ Float collar and float shoe ♦ Casing centralizer ♦ Cementing plug ♦ Cementing head ♦ Stage Collar ♦ Casing/ Tubing coupling ♦ Drill pipe♦ Sucker rod ♦ Thread protector ♦ Air blaster
With registered capital of 60,840,000 yuan, is composed of 9 subsidiaries, including 8 manufacturers and 1 trade company. Zhongshi Group covers an area of 200,000 sq.m, including workshop area of 50,000 sq.m. Various kinds of production equipment values 38,600,000 yuan. It has a strong mechanical processing capability.
Our leading products are pumping unit, tubing pump & sucker rod pump, cementing accessories, down-hole tools, wellhead (X-mas tree), drilling solid control series, pressure vessel,camping house, air cannon, belt feeder and so on. They are mainly supplied to Central Asia, Southeast Asia, Africa and Middle East and many other countries.
Zhongshi Group has been the Tier One internet service provider of Sinopec. We passed ISO9001 quality management system certification and got approved to use API monograms on its oil machineries. So far, we have attained API 5CT, API 10D, API 11AX, API 11E and more are applying for.
With strong technical backup, reliable product quality, advanced marketing regime and good service system, this company wins popularity and recognition of vast consumers home and abroad.
We would like to faithfully cooperate with friends from all circles with classic products and service to achieve common development.
