Anti-rotation cementing plug

1. During cement injection, it is used to isolate cement slurry and mud and prevent the mud permeating in cement slurry affecting cementing quality.;2. Structural characteristics: the series of cementing plugs are divided into common cementing plugs, the upper/lower plugs used for double-plug commenting, and the upper/middle/lower plugs used for two-stage cementing.

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Cementing tools

Cementing plug

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Product introduction

Purpose

1. During cement injection, it is used to isolate cement slurry and mud and prevent the mud permeating in cement slurry affecting cementing quality.

2. Structural characteristics: the series of cementing plugs are divided into common cementing plugs, the upper/lower plugs used for double-plug commenting, and the upper/middle/lower plugs used for two-stage cementing.

Specifications of casing	Scope of casing application		Outer diameter of rubber bowl
in.	kg/m	lb/ft	mm	in.
4-1/2	14.14-17.26	9.50-11.60	110	4.331
5	17.11-35.86	11.50-24.10	122	4.803
5-1/2	20.83-39.88	14.00-26.80	135	5.315
7	25.30-56.55	17.00-38.00	170	6.693
7-5/8	35.72-63.69	24.00-42.80	185	7.283
9-5/8	53.57-79.62	36.00-53.50	235	9.252
10-3/4	60.27-97.77	40.50-65.70	260	10.236
13-3/8	71.43-107.15	48.00-72.00	333	13.11
20	139.89-197.93	94.00-133.00	498	19.606

➣ Standard cement plugs are applicable for various float collars and float shoes; anti-rotation cement plugs are applicable for anti-rotation float collars and float shoes.

➣ Two-stage seals and scraping wings are designed for the top plugs and bottom plugs

➣ Scraping wings used for processing of abrasion-proof material

➣ An anti-rotation mechanism is designed for the anti-rotation plugs, improving drilling-off speeds greatly.

➣ It is drillable when PDC drill bits or cone bits are used.

Casing mud scraper

Multi-stage cement injector

Related products

Multi-stage cement injector
Multi-stage cement injectors are also known as stage collars or double-stage collars. DSG-A multi-stage cement injectors are mechanical (also known as hydraulic domestically), and they are special devices used to divide cement injection operation into two steps. They are mainly used in the operation in the following cases.
Float collar and float shoe of cement
1. The top of the float shoe has the function of orientation.;2. The filling material of the cement float collar and float shoe is high-strength Grade G cement. Such cement can ensure leak-tightness and good drillability.;3. The material of the valve body is high-strength aluminum alloy that can provide good erosion resistance and back pressure resistance.;4. There are two optional forms of valves, i.e. Single valves and double valves.
Cementing plug
The upper and lower plugs isolate different liquids, and the drilling fluid or cement slurry can be scrapped off from the inner wall of the casing. The bumping signal will be given when bumping is completed, indicating cementing completion. The plugs can be divided into several types, including the upper/lower casing plugs, self-locking plugs, liner plugs, multi-stage cementing plugs and anti-rotation plugs. Both the length of the cement plug in the casing and the quality of the cement mantle in the casing shoe accessories can be ensured. Such plugs are also be mounted in cement heads to isolate the rubber products of different types of liquid during cementing operation.
Cementing plug
Standard plugs are applicable for various float collars and float shoes. The anti-rotation mechanism is designed for the anti-rotation plugs, improving drilling-off speeds greatly. Self-locking plugs are advanced technically and can be used safety; the product performance can reach the advanced level in China.
Self-locking plug
The QZZS-A forced self-locking float collar and its associated self-locking plug (the plug also has the functions of forcing and self-locking) can provide effective self-locking and sealing. Through ground tests and the sit application of multiple wells, the tool is proven to have a reasonable structure. It can provide easy operation and reliable sealing, intentionally solving the series of problems caused by the cement plug that is left in the casing due to the non-return function failure of the float collar and the upward moving of the plug after cementing operation.
Resin roller centralizer
During the casing lowering in deep wells, extended reach wells and long horizontal drainholes, cuttings will be tucked in the slot space of the slotted rolling ball centralizer, which will lead to encumbered ball rolling, stronger friction and difficult casing lowering. The roller of the resin roller centralizer is made of bearing steel, ensuring both the bearing strength of itself and the minimum friction generated during steel ball rolling.
Single-plug cement head
Single-plug cement heads are used for cement injection.Single-plug cement heads can be connected to casings.
Double-plug cementing head
1. Equipped with quick connectors for easy connection; can be connected to API casing threads/drill stem threads, ensuring a wide application scope;2. Indicator used to indicate rubber plug drop (if any);3. Compensating pipes are mounted for easy baffle pin opening
Cementing tools---Thermal compensator
➣ The thermal compensator is connected into the casing string of the heavy oil thermal recovery well to provide effective compensation for the casing string elongation caused by steam injection process or the casing string shrinkage caused by carbon dioxide injection and other measures. In this way, casing deformation and damage caused by elongation or shrinkage can be prevented.