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The world of today is powered by petroleum fuels. These fuels are mined from various places around the world. The Middle East is one of the regions that is well-known for its large deposits of oil resources. Several economies in this region rely on oil in large part. Other countries that have huge deposit of oil resources are the United States, Russia, and Africa. Here are facts regarding Paraffin Removal Oil Wells.
There many challenges involved in the process of removing oil from its deposits. Formation of organic deposits inside and around the wellbore is among one of the most occurring problems. The deposits can be grouped into two major groups. The two are asphaltenes and paraffin. These deposits occur in the tubing or pores of reservoir rocks.
Three main categories of compounds are found in crude oil. Tthese compounds include aromatic hydrocarbons, asphaltenes and resins, and saturated hydrocarbons also known as paraffin. Aromatic hydrocarbons and paraffin make the highest percentage whereas only a small percentage is made by asphaltenes and resins. On the contrary, more asphaltenes and resins than aromatic hydrocarbons and paraffin are contained in tars, bitumens, and many other degraded crude oils.
Paraffins which are high-molecular-weight alkanes usually build up in spaces and components like wellbores and feed lines in boring setups. Normally, in the course of time, these deposits increase in thickness leading to significant drop in oil generation when they have grown to large sizes. When this stage has been reached, it is essential that some remedial steps must be taken to salvage the satiation and restore maximum production.
Deposits usually range in hardness from very hard to brittle deposits. The deposits usually get bigger and firmer as the molecular weight of the paraffins increases. In most cases paraffins and asphaltenes occur separately, but in some cases, they occur together. The deposition is usually caused by the loss of solubility of the crude oil involved. Loss of solubility is caused by several factors such as changes in content of the oils and change in pressure and temperature.
Various techniques are used for paraffin removal. As time has passed, new methods have been invented to fasten and ease the process of paraffin removal in wells. Consequentially, several techniques are available for use at the moment. These methods may be grouped into three main groups. These three groups of techniques are use of heat to melt and remove the wax, mechanical removal, and use of chemical solvents.
Use of scrappers and knives to remove wax deposits in wellbores fall under mechanical methods. The efficiency level of mechanical methods varies a lot depending on factors surrounding the oil deposit. But, it is clear that mechanical methods are generally inexpensive to apply. As a result, most companies use them on their oil fields.
Solvents are employed commonly as well. Here, crude oil is applied on wellbores so that paraffin deposits can be removed. The crude oils that are used in this procedure are heated to temperatures of 300 degrees Fahrenheit. The oils that are hot are then fed or injected into the wellbore under gravity. Before the hot solvent is produced back to the surface, it dissolves the wax.
There many challenges involved in the process of removing oil from its deposits. Formation of organic deposits inside and around the wellbore is among one of the most occurring problems. The deposits can be grouped into two major groups. The two are asphaltenes and paraffin. These deposits occur in the tubing or pores of reservoir rocks.
Three main categories of compounds are found in crude oil. Tthese compounds include aromatic hydrocarbons, asphaltenes and resins, and saturated hydrocarbons also known as paraffin. Aromatic hydrocarbons and paraffin make the highest percentage whereas only a small percentage is made by asphaltenes and resins. On the contrary, more asphaltenes and resins than aromatic hydrocarbons and paraffin are contained in tars, bitumens, and many other degraded crude oils.
Paraffins which are high-molecular-weight alkanes usually build up in spaces and components like wellbores and feed lines in boring setups. Normally, in the course of time, these deposits increase in thickness leading to significant drop in oil generation when they have grown to large sizes. When this stage has been reached, it is essential that some remedial steps must be taken to salvage the satiation and restore maximum production.
Deposits usually range in hardness from very hard to brittle deposits. The deposits usually get bigger and firmer as the molecular weight of the paraffins increases. In most cases paraffins and asphaltenes occur separately, but in some cases, they occur together. The deposition is usually caused by the loss of solubility of the crude oil involved. Loss of solubility is caused by several factors such as changes in content of the oils and change in pressure and temperature.
Various techniques are used for paraffin removal. As time has passed, new methods have been invented to fasten and ease the process of paraffin removal in wells. Consequentially, several techniques are available for use at the moment. These methods may be grouped into three main groups. These three groups of techniques are use of heat to melt and remove the wax, mechanical removal, and use of chemical solvents.
Use of scrappers and knives to remove wax deposits in wellbores fall under mechanical methods. The efficiency level of mechanical methods varies a lot depending on factors surrounding the oil deposit. But, it is clear that mechanical methods are generally inexpensive to apply. As a result, most companies use them on their oil fields.
Solvents are employed commonly as well. Here, crude oil is applied on wellbores so that paraffin deposits can be removed. The crude oils that are used in this procedure are heated to temperatures of 300 degrees Fahrenheit. The oils that are hot are then fed or injected into the wellbore under gravity. Before the hot solvent is produced back to the surface, it dissolves the wax.
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