Float collar

➣ The outer shell of the float collar is made of 35 CrMo alloy steel, and all internal parts are made of drillable materials. It can be used in vertical wells, high-angle deviated holes and horizontal wells.;➣ Its capability of preventing back pressure is higher than 25MPa. Various models of float collars, float shoes, sulphate resistant.

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Float shoe
➣ The float shoe is equipped with circulating extension pipes.;➣ Its outer shell is made of 35 CrMo alloy steel, and all of its internal parts are made of drillable materials. It can be used in vertical wells, high-angle deviated holes and horizontal wells.;➣ Its capability of preventing back pressure is higher than 25MPa.
Casing mud scraper
➣ In order to improve the cementing quality between cement and the formation (second interface), our company develops “oversized mud cake remover”. It adopts unique design and materials, and is formed with unique process. For the scraper, high-elasticity manganese steel wires are adopted, woven and inter-embedded to realize 360° all-side scraping. The steel bodies at the both ends are centralized, and the blocking of swirl channels is prevented. The model can be selected according to the enlargement rate to ensure the effect. It is a unique product at home and abroad currently.
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.
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.