Everyone in the petroleum extraction site knows that wax and other deposits reduce the efficiency of the oil recovery systems and also the flow lines. This has far-reaching consequences since it will clog the transferring system thus reducing the overall productivity. Normally oil is prone to precipitation which leaves behind the waxes in the form of paraffin deposits. In such cases, paraffin removal oil wells are necessary as a stop measure. Some of the techniques available for the removal include the following.
The most economical means of clearing the deposition is by use of mechanical methodology. This involves physical and non-chemical processes such as the use of rod scrapers, wire-line scrapers among other techniques. The principle behind this methodology is quite simple. The scraper is put on the transportation lines then they are fitted to a sucker rod. Automatic or mechanical reciprocation will ensure that the deposits are cut by the sharp edges of scrapper.
As stated earlier temperature change is the main reasons why precipitation of wax occur in the transportation flow lines and the recovery systems. The best way to manage this problem by adding external heat to the system and minimizing the heat loss by insulating the flow lines. One way to add heat is by the installation of electric heaters down the hole near the production formation.
Use of hot oil is normally the first technique many people try. In this method, the heated fluids are used to dissolve the deposition on the walls of production tubing. This is best done by injecting the hot oil down through the system casing and up through the main production tubing. However, there is need to keep the temperatures of the crude oil above the cloud content temperatures of paraffin to avoid re-deposition.
Hot water technique is also a widely used technique widely used in many areas. This technique involves pumping hot water down the casing and up the tubing to melt or increase the solubility of the formed wax in the produced oil that has accumulated in a production tubing. Heated water in the form of steam is also used in some regions in place of hot water.
Chemical method is the best and effective methods available for many companies. Dispersant is a portion of the concoction which can keep the wax in a scattered frame in the raw petroleum. They kill the attraction between the wax deposit and the equipment surface molecules. It is the strong attraction that leads to formation of layers and therefore without this bond there will be no deposition at all.
The Use of solvent compounds is also very effective in preventing the crystallization and deposition of oil on the equipment surfaces. Some of these solvents used such as the gasoline, pentane and other aromatic compounds have the special ability to penetrate into the paraffin deposit and break them down into the crude fluid.
Ultimately there are gatherings of polymeric materials or extended chain polymers best known to be modifiers. This chemical can infiltrate into the wax and change the atomic development shaping a compound which has low assimilation capacity. The blend of this mixes with wax, and then affect the deposition ability of wax, and therefore they will remain in liquid state.
The most economical means of clearing the deposition is by use of mechanical methodology. This involves physical and non-chemical processes such as the use of rod scrapers, wire-line scrapers among other techniques. The principle behind this methodology is quite simple. The scraper is put on the transportation lines then they are fitted to a sucker rod. Automatic or mechanical reciprocation will ensure that the deposits are cut by the sharp edges of scrapper.
As stated earlier temperature change is the main reasons why precipitation of wax occur in the transportation flow lines and the recovery systems. The best way to manage this problem by adding external heat to the system and minimizing the heat loss by insulating the flow lines. One way to add heat is by the installation of electric heaters down the hole near the production formation.
Use of hot oil is normally the first technique many people try. In this method, the heated fluids are used to dissolve the deposition on the walls of production tubing. This is best done by injecting the hot oil down through the system casing and up through the main production tubing. However, there is need to keep the temperatures of the crude oil above the cloud content temperatures of paraffin to avoid re-deposition.
Hot water technique is also a widely used technique widely used in many areas. This technique involves pumping hot water down the casing and up the tubing to melt or increase the solubility of the formed wax in the produced oil that has accumulated in a production tubing. Heated water in the form of steam is also used in some regions in place of hot water.
Chemical method is the best and effective methods available for many companies. Dispersant is a portion of the concoction which can keep the wax in a scattered frame in the raw petroleum. They kill the attraction between the wax deposit and the equipment surface molecules. It is the strong attraction that leads to formation of layers and therefore without this bond there will be no deposition at all.
The Use of solvent compounds is also very effective in preventing the crystallization and deposition of oil on the equipment surfaces. Some of these solvents used such as the gasoline, pentane and other aromatic compounds have the special ability to penetrate into the paraffin deposit and break them down into the crude fluid.
Ultimately there are gatherings of polymeric materials or extended chain polymers best known to be modifiers. This chemical can infiltrate into the wax and change the atomic development shaping a compound which has low assimilation capacity. The blend of this mixes with wax, and then affect the deposition ability of wax, and therefore they will remain in liquid state.
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