Continuous Nitrogen Services is a privately owned oilfield service company with operations in North America and Saudi Arabia.
Our Systems completely eliminate the need for inconvenient delivery of bulk nitrogen supplies and can remotely produce unlimited supply of Nitrogen gaseous using state of art N2 Membrane system.
Our mobile generation units are used for a variety of functions and applications in the construction of oil and gas wells. The applications range from Cross country pipelines, under balance drilling to the completion phase of new wells, to clean out and stimulation in work-over or intervention programs.
Our services are utilized across the spectrum of Pipeline and Facility maintenance, Pigging, Smart Pigging, Purging, Drying, Pressure Testing, Abandonment, Pre and Decommissioning.
All pipeline & piping systems require some degree of cleaning prior to start-up. Cleaning Methods: utilize water, chemical, air, steam or a combination thereof, to achieve the desired cleanliness of pipeline or piping internals. Thus using both engineering and economics the proper balance between each aspect of the cleaning process may be achieved in order to yield the greatest overall benefit in the quickest possible period with minimum resources. Whether your pipeline will carry crude oil, refined products, natural gas, or high purity petrochemical products we have an array of services to ensure your pipeline is put in service in the best possible condition, assuring you of a trouble free start up, and minimizing operational problems.
Hydro-testing of a pipeline is carried out mainly to check the integrity of the pipeline and ensure that the pipeline can be operated at its Maximum Allowable Operating Pressure (MAOP) and is free from any major defects which could affect the pipeline during operation. It is the most conventional and economical method to test pipelines before operations. CNS Arabia Integrated Pipelines Services maintains an extensive inventory high pressure positive displacement pumps break tanks, test end, temperature and pressure monitoring/ recording instruments and has the experience to operate them efficiently. Depending on the length and diameter of the pipeline, being tested the appropriate pumps and equipment will be dispatched to the site to ensure that the pipeline is tested with the highest level of accuracy and precaution.
Process of dewatering is to remove the test water from the pipeline prior to drying. After the hydro tests, The Best dewatering Methods leaves A film Of water clinging to the inside pipe wall. So therefore, it is necessary to remove this Water to eliminate the formations of Hydrates and the possibility of the onset of internal corrosion causing carbon dioxide and hydrogen sulfide or to meet the moisture specifications for the delivered product. The pipeline is usually dewatered using a multi-scraper train propelled with air. If the line is to be subsequently dried, it is beneficial to use dry air or nitrogen for this process. For pipelines that have been filled with seawater, or other non-potable water, the line may also be swabbed with fresh water to remove salt deposits and other contaminants. Several slugs of fresh water will be run between scrapers at the front of the dewatering train, followed by additional scrapers in the dewatering train to ensure maximum bulk water removal.
To maintain purity of the product transported through a pipeline there are specific requirements regarding the maximum allowable content of water within the line. So drying is mandatory before commissioning especially for dry service products. CNS Arabia Integrated Pipelines Service has the experience and expertise to ensure that your pipeline will meet or exceeded the drying specifications in the least amount of time at the lowest possible expense. CNS Arabia Integrated Pipelines Service is able to design and implement the best possible drying program/method/schedule that confirms exactly to client specifications. CNS Arabia provides three methods Air Drying, Drying using Nitrogen and Vacuum Drying to dry the pipeline. The dry air absorbs water left by the dewatering operation. Nitrogen has dew point of – 40 °C and used as drying medium. Vacuum drying is the removal of free water from a pipeline by reducing the pressure in that pipeline.
Nitrogen Purging / Commissioning
Prior to the introduction or removal of flammable gases or liquid to/from a pipeline, vessel or pipe work system, it is standard practice to render the atmosphere within the equipment incapable of supporting combustion. There are three basic ways of purging a system with nitrogen: Displacement Purging (at atmospheric pressure), Pressure Cycle Purging and Vacuum Purging.
De-commissioning of pipeline, carried out to perform desired maintenance activity such as, hydro testing of pipeline to revalidate or upgrade pipeline’s ability for higher operating pressure or conversation to new product. It may also be necessary to replace valves, fittings, damaged sections of the pipeline or add a new connection to services a customer. Typically, de-commissioning and recommissioning a pipeline will include displacing hydrocarbons with nitrogen from the pipeline to enable hot work activities pressure.
On completion of process system or pipeline commissioning, it will occasionally be necessary to protect the system from corrosion or degradation for a period of time. As nitrogen is an inert gas, it is ideally suited for this type of dry lay-up operation. This is achieved by the elimination of oxygen. Where conditions not have been prepared properly at the onset of the lay-up or change over time, corrosion could initiate and remain active. Effective oxygen exclusion requires purging of the original atmosphere by repeated pressurization with nitrogen followed by venting until the oxygen concentration is less than 5%.
GAS PLANTS AND REFINERIES OPERATIONS
The hydrocarbon processing industry deals with many hazardous products which need to be removed from the facilities before any maintenance or cleaning work can be executed. Systems will be drained of fluids and any remaining gases need to be purged using nitrogen. After the shut-down work the same systems often need drying and purging.
In Plant Process Piping Services
Oil and Gas Well Services
Along with our business, collaborate Middle East Manufacture of Pipe Cleaning Equipment "MEM" CNS Arabia supply and manufacture all Metal Bodied Polyurethane Scrappers and Polyurethane Foam Pigs of all sizes.
All pipelines must be gauged internally by a gauging scraper to ensure that the pipeline systems is free of all buckles, kinks, weld over penetration or dents and that the pipeline has a proven bore throughout its length. Depending on the client’s requirements, sometime require a caliper or intelligent geometry-profiling scraper. A Caliper scraper measures the pipeline bore as well as the distance travelled, it also indicates the number of damaged section, whereas a gauging plate only shows single damage. Gauging plate gives only basic information. It gives no indication of more than one-line intrusion or difference between dent and a piece of debris left in the pipeline.