Cementing Equipment Companies USA have various items such as land cementing units batch mixers which are used for drilling oil, gas or water wells.
The Casing is installed at various depths while drilling. It is held in place by cement and it also provides zone isolation. Down-hole equipment like Centralizers and Turbolizers are used for obtaining satisfactory zone isolation.
Float Shoes and Collars prevent the backflow after the cement has been pumped into place.
Before selecting a Cementing Equipment Companies USA, let us have a deep understanding of the various type of cementing equipment.
Parts of cementing equipments
There are different parts of Cementing Equipment such as-
Centralizers, Turbolizers and Scratchers
Devices fitted with hinged collars and bow springs helps in keeping the casing or liner in the centre of the wellbore to help ensure efficient placement of a cement sheath around the casing string.
If casing strings are cemented off centre, then there is a high risk that a channel of drilling fluid or contaminated cement would be left where the casing contacts the formation, thus creating an imperfect seal.
Turbolizers have added fins to “stir” up the drilling fluid and cement, so it keeps the flow turbulent so that the cement flows all the way around the casing in order to prevent channelling.
Scratchers use metal wires to scrape mud cake off permeable zones and it helps in obtaining a solid cement column.
Float Shoe
A rounded profile float shoe with an integral check valve is attached to the bottom of a casing string which prevents the reverse flow of cement slurry from the annulus into the casing string.
The float shoe also guides the casing towards the centre of the hole to minimize hitting rock ledges as the casing is run into the wellbore. By “floating” casing in, hook weight gets reduced.
With controlled or partial fill-up as the string is run, the casing string can be floated into position, including the need for the rig to carry the entire weight of the casing string. The outer portions of the float shoe are made of steel and generally, it matches the casing size and threads, although not necessarily the casing grade.
The inside including the external taper is usually made of cement or a thermoplastic since this material must be drilled out if the well has to be deepened beyond the casing point.
Guide shoes are a variety of a float shoe without a check valve.
Float Collar
A float collar is that which is installed near the bottom of the casing string. Cement plugs land on it during the primary cementing operation, thus it retains inside the casing of a small portion of the cement that may have become polluted. It is similar to a float shoe, as both are used for redundancy.
The internal check valves may be flapper type or maybe spring loaded balls.
The check-valve assembly fixed within the float collar prevents the flow back of cement slurry when pumping gets stopped. Without a float collar or a float shoe, the semi-liquid cement placed in the annulus could U-tube or flow back reverse into the casing. The density is greater of cement slurries than the displacement mud inside the casing causes the U-tube effect.
Stage Collar
Stage Collars are those who provide a means for cement slurry to be displayed higher in the annulus immediately following the primary cement job.
A series of differently sized rubber plugs pumped down inside the open casing and then later closes the sliding valves.
Cementing Plug
A rubber plug which is used to separate the cement slurry from other fluids is called a cementing plug, it reduces contamination and maintains predictable slurry performance. Two types of cementing plug are used on a cementing operation. The bottom plug is launched ahead of the cement slurry which minimizes contamination by fluids inside the casing prior to cementing.
A diaphragm in the plug body ruptures which allows the cement slurry to pass through after the plug reaches the landing collar.The top plug has a solid body which provides a positive indication of contact with the landing collar and the bottom plug through an increase in pump pressure.
How does cementing equipment companies USA work?
Cementing is used to plug a well so that it cannot be abandoned. The cement slurry flows to the bottom of the wellbore through the casing, which will eventually go through the pipe through which hydrocarbons flow in the surface.
From there, it fills in the space between the casing and the actual wellbore, and then it hardens.
How to choose the right cementing equipment companies USA?
It is not very difficult to choose the right cementing equipment company.
The important thing is to prioritize your requirements and then select a company.
Important aspects are functions, flow control and cementing equipment operation and also your budget. The equipment should be selected according to the use.Make sure you keep your requirement clear.
