7" Stop Collar Bevelled with Locking Screws

Diameter: 5 1/2" to 20"
Use: Horizontal Oil Well and Straight Wells
Surface Treatment: Electrostatic Painting
Plate Thickness: 3.8 mm
Color: Red, Black, Orange or Others
Samples:
US$ 0/Piece 1 Piece(Min.Order)
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Customization:
Gold Member Since 2010

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Manufacturer/Factory

Basic Info.

Model NO.
ZS71
HS Code
73072900
Production Capacity
10000PCS Per Month

Product Description

Product overview:

Casing centralizer is one of the necessary conventional casing accessories, casing centralizers can play the role of:

1. Reducing lower casing resistance phenomenon, make the casing down to the designed position.

2. Make casing centralizers centered in the oil well.

3. To reduce the sticking phenomenon to make the annular space hydrostatic pressure balanced.

4. Reduce channeling, improve the mud replacement efficiency, thus improve the cementing quality.

The reset force of double bow type centralizer is higher than the single bow centralizer, the performance is better than single bow type.


Product Description

Bow springs made of spring steel which has been heat teated and hardened tempered to ensure proper and consistent spring characteristics.

End collar hinges are folded toward inside. This way will minimize the collar stretch to occur when centralizers encounter tapers, commonly found in certain type of pipe connections.


A reinforcing rib stamped into the end collar. This way will strengthen and preserve it's round configuration during transport. Centralizers with built-in stop devices as well as those uncommon sizes are available based on request.

Function:
Take casing to designed position by reducing sticking while casing going down.

Let the casing pipe center on the well all the way.

Balance liquid pressure in annular space by reducing adhesion phenomenon.

Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect


Our Services.

Our products and services are closely related to oil drilling and oil well cementation. Our products include integral casing centralizer, welded casing centralizer, bow spring centralizer, float shoe, float collar, Suck Rod Pump, api pumping unit, Thread Protector, Thread Gauge, Api Valve Ball and Valve Seat, coupling and pump plungers.

Packaging & Shipping

Wooden case, standard export packaging, firm enough for long distance sea-shipped, air transportation and railway transportation.


Company Information

The predecessor of Puyang Zhongshi Group Co. Ltd, was the 5th Machine Repairing Factory of Puyang Zhongyuan Oil field, Sinopec Corp. In 1997, after being restructured according to the modern corporate system, the factory was named Puyang Zhongshi Group Co., Ltd.

With registered capital of USD 10.15 million, Puyang Zhongshi Group 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 USD 6.5 Million. 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.
 NO. Specification & Size I.D. mm Height mm Total Height Max Diameter
 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

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Gold Member Since 2010

Suppliers with verified business licenses

Manufacturer/Factory
Registered Capital
19.21 Million USD
Management System Certification
ISO9001:2015, ISO14001:2015, ISO45001:2016