The process of producing and pumping cement into a wellbore is known as oilfield cementing. A wellbore can be protected and sealed by cementing. When the cement slurry is pumped into the well, it performs cementing, replacing the drilling fluids still in the well with cement.
The casing, which will eventually serve as the pipe through which the hydrocarbons flow to the surface, allows the cement slurry to flow to the bottom of the wellbore. From there, it hardens and fills the area between the wellbore’s real casing. In addition to firmly positioning the casing, this forms a seal that prevents outside materials from entering the well flow.
Process of preparing the cement for oilfield cementing:
Establishing the quantity of cement needed for the job is crucial when preparing a well for cementing. This is accomplished using a caliper log to measure the borehole’s depth and diameter. Multi-finger caliper logs measure the diameter of the well concurrently at several sites using mechanical and sonic methods to account for variations in the wellbore diameter and calculate the volume of the open hole.
Before beginning cementing operations, the cement must have the necessary physical qualities. Before the cement is pumped into the hole, the right set of cement is also selected, including the density and viscosity of the substance.
Special mixers are employed to make the wet cement, also known as slurries, such as hydraulic jet mixers, recirculating mixers, or batch mixers. Portland cement, which is calibrated with additives to create one of eight different API classes of cement, is the cement used in the well cementing process. Each is used in different circumstances in oilfield cementing.
Accelerators reduce the time the cement needs to set, and retarders, which do the reverse and lengthen the time the cement needs to set, are examples of additives. Lightweight and heavyweight additives are added to the cement to change its density.
The cement’s compressive strength, flow characteristics, and dehydration rates can change by adding additives. We can use the extenders to expand the cement. It lowers the cement cost. We can also use antifoam additives to stop foaming inside the well. Bridging materials are also introduced to plug lost circulation zones.
Top Recommendations for Oilfield Cementing Products:
For cementing services to run a booming oilfield cementing operation, they need top-notch industrial items produced by reputable manufacturers.
The following are a few of the top goods that drilling companies and industry professionals in Canada have identified as being on trend:
1. Bentonite Premium Gel NT
A clay called bentonite is produced by altering volcanic ash. Its characteristics produce a gelatinous and viscous fluid frequently utilized in many applications for hydration, swelling, water absorption, and viscosity.
Bentonite is used in industrial settings to lubricate and cool cutting blades, clear away debris, and assist in avoiding blowouts.
2. Carbonate of Calcium
As a drilling additive, calcium carbonate is employed as a formation-bridging and filter cake-sealing agent. It is also employed as a weighing material to improve the density of drilling fluids and control downhole pressure.
3. Lime Hydrated
In water-based and inversion emulsion oil fluids, hydrated lime, commonly called slaked lime, serves as a source of calcium and hydroxyl ions.
The importance of investing in the best oilfield cementing equipment:
Regardless of a well’s depth, well cementing is a crucial service inherent to a well. Construction is essential for all stages of a well’s development and life cycle. Primary cementing is one of the numerous methods of cementing.
Primary oilfield cementing involves injecting cement into the annular space between the casing and wellbore to ensure a complete and long-lasting hydraulic seal. The following are some of the key cementing goals:
- Ensuring efficient hydraulic isolation for every component of the well
- Keeping the environment safe
- Ensuring isolation for all of the shallow aquifers, hydrocarbons, and water reservoirs that may be present in the wells
- Supporting the weight of the casing
- Reducing the rate at which well fluids and other fluids pumped during stimulations erode the casing
- Preventing unconsolidated structures from collapsing
The main challenge is getting reliable hydraulic seals in places that handle pressurized fluids. To do this, increasing the drilling mud displacement from the annular space section that will be cemented is essential. With no canalizations in the cement layer and a thorough pour, this enables good, 360-degree adhesion between the casing and the wellbore. Although it might appear simple, success calls for careful planning, design, and application of hydraulic fluid displacement and centralization simulators.
Seven tips to consider while choosing oilfield cementing equipment:
There is no set procedure when choosing cementing equipment for your oilfield business. We should consider the following factors as you make judgments about the best cementing equipment for your operation:
- Single or twin pumping unit—Depending on the size of your operation and the daily output requirements, you should decide between a single and twin pumping unit.
- Skid, trailer, or truck mounted—Determining whether to use cementing equipment that is skid, trailer, or truck mounted depends on the operation site and if you will need to move it about readily.
- Desired instrumentation devices – Depending on your needs for daily use, you might require test instruments or other types of instrumentation.
- Transmission capacity – It is necessary to conveniently transport power from your site to your cementing equipment for maximum capacity.
- Engine configuration – The engine configuration of your equipment influences your oilfield cementing equipment’s performance and compatibility with your production site.
- Adding storage racks; can remove obstructions that limit access, which is helpful if you need to store hoses close to your cementing tools for simple access.
- Heating or cooling packing—Depending on the climate at your manufacturing site, heating or cooling packaging may be required to keep your cementing equipment at the right temperature.
These are some considerations you should make while ordering cementing equipment. Additionally, it would help if you were careful to work with a business willing to modify your equipment to meet your needs because they are interested in your success. You have the best chance of finding durable, high-performance cementing equipment that will operate as intended over the long haul.
Tips for choosing the best cement mixer:
Construction sites frequently use cement mixers. It would help if you had them as necessary equipment for your construction project. Not every cement mixer available will, however, be beneficial to you. You must conduct enough research to get the most excellent cement mixer available.
As a result, this brief article gives you an outline of the factors you should take into account when choosing the most practical cement mixer. Find out what to look for in a cement mixer by reading on. To prevent being taken advantage of by shady vendors, you should first ensure that you are familiar with the fundamentals of cement mixers before you go out and buy one.
Similarly, you should give yourself enough time to examine the mixer’s frame and ensure it is entirely operational before making a purchase. You should examine the wheels like the frame to ensure they are in working order.
The Bottom Line:
Once more, some manufacturers could exaggerate the size of the drum. As a result, you should make sure the capacity is indeed what is advertised. The bag rating, power ratings, and handle ratings are additional factors.
Prismecs is pleased to provide a wide selection of drilling options to support your oilfield cementing services. High-quality items and excellent customer service are priorities for us. For additional details on any of the goods mentioned above, feel free to contact us immediately. You are free to write us your queries at sales@prismecs.com!
