API 10D bow spring casing centralizer

Description

Casing centralizer as a cementing tool is applied in vertical, deviated and horizontal wells to centralize casing for improving the cementing quality. The cement could be concreted firmed between casing and borehole wall. It can be installed on casing joint or any position working with stop collar for centralizing. Our centralizer with API standard sizes range from 4-1/2” to 26” and surface is coated by powder baking or paint baking. The products have high tensile and yield strength, shock, impact and corrosion resistance performance.

Single Piece Centralizer

API single piece centralizer performs satisfactorily in open hole as well as cased hole. These high quality product, developed to meet and exceed API 10D specifications for using in highly demanding downhole conditions. Single piece centralizer combines the highest restoring force with zero start force and zero running force. The single piece centralizer is used to position the casing in the center of the wellbore in vertical deviated and horizontal wells.

The single piece centralizers reduce the effect of channeling by improving the cement flow, the results in more uniform cement thickness in the well bore .By reducing the pipe movement before cement sets in. The single piece centralizers are able to minimize gas channeling.

The single piece centralizers are one piece construction in special high strength steel which imparts excellent hardness and spring action ensuring an unmatched ability to come back to its original shape after undergoing rigorous stress loads conditions.

The single piece centralizers are available in size 4-1/2" to 26".Any special sizes or combination can be available on requirement.

This centralizer undergoes a special Iron Phosphate coating process to prevent it from rust and coated with special Polyester Powder. It is shipped in assembled condition only. When shipping them, in order to save space and shipment charges for customers, we usually put the smaller size centralizer into bigger size centralizer.

Bow Spring Centralizer Hinged Type

Hinged bow spring centralizer is a traditional processed and economic centralizer, this kinds of centralizer is used in general vertical or slightly deviated wells .In the past, this kinds of bow spring centralizer is with the highest restoring force and the lowest starting force, so they are widely used in the drilling or cementing jod, but now it is not the highest restoring force bow spring centralizer. It is simple way to increase the restoring force according to bow height. The higher bow, the more restoring force.

The bow of spring centralizer is made of 65Mn steel which is better tensile strength than general steel, but it is not up API standard, so we need process them by heat treatment in the high temperature and then annealing treatment in the cool water with special chemical material .What we do is to ensure the bow higher restoring force. This kinds of heat treated bow provides good centralization in the well when in fast running casing.

Their installation on the casing pipe is very convenient. It requires only the placement of the two assembled halves on the pipe and inserting the pin in the end collar hinge.

In order to increase anti-corrosion, we need use the special spring alloy steel, not simple 65Mn alloy steel according to customer's well environment. For the collar of bow spring centralizer, we use Q235 steel. It is not restrict requirement in API standard. What we do is to meet the restoring force according to API standard. The Hinged bow spring centralizers are available in size 4-1/2" to 26". We supply two kinds of hinged bow spring centralizer like welded centralizer and non welded centralizer.

The bow is open and packed in the wooden case with pins, lowering the shipment charges.

Casing Centralizer Positive Type

This hinged non welded positive casing centralizer uses hinged pins to secure the hinged designed end collars together around the casing.The positive casing centralizer consists of straight formed positive bars, which are attached using rivets onto the hinged end collars.

The design is hinged for ease of installation and is normally run over a stop collar or coupling.Non weld Positive Centralizer are Provided with rigid bows of U – Profile design instead of spring bows to ensure maximum fluid passage and reduces frictional drag force in deviated hole conditions . They provide almost 100% standoff when run inside a cased hole.The flat U profile is fitted in self locking retaining lips for firm and positive hold.

Bows can be selected to meet any hole Size from a choice of ten standard U profile depths and bow heights.

Hinged non weld positive casing centralizers are available in sizes 4-1/2" to 26".Any special sizes or combinations are available on request.

Packing&Shipping

The normal package is wooden box(Size: L*W*H) and we can also package the goods according to customers' special request.

Goods will be delivered by sea, train, truck, air, etc.

Company Introduction

Located in Qingdao city of Shandong province and with many years of export experience, FRT Machinery has developed into one of the first-class petroleum equipment suppliers capable of providing comprehensive services to customers.

We have competitive prices of our main products of casing accessories like bow spring centralizer, solid rigid centralizer,float equipment, cementing plug etc. The market share of FRT is growing steadily and rapidly. Our products have a presence in more than 50 countries and regions in the world, covering North America, Latin America, Russia and Central Asia, the Middle East, Asia Pacific, Europe and Africa.

FRT regards continuous learning ability as one of the company's core competitiveness and provides regular training to employees to enhance their comprehensive abilities and skills.

We are committed to focusing on the challenges and pressures of customers' attention, providing competitive solutions and continuously creating the maximum value for customers. Safety and environmental and social responsibility are at the core of all our business activities.