... Abstract Organic deposits such as paraffin have long been an issue in many oil-producing wells throughout the world. These deposits have been treated for years with solvent chemicals such as xylene. Although xylene is quite effective at dissolving and removing paraffin, it is not easily...

... Abstract Paraffin related problems of deposition, congealing oil and interface/tank bottoms cost the gas and oil industry hundreds of millions of dollars each year. Most of this money is spent without a clear understanding of the problems being experienced or their cost. If the real cost...

... of the packages' dilution and the effect of proper additive dosing is addressed. upstream oil & gas dilution package viscosity drilling fluids and materials pour point viscosity specificity pendant chain control additive drilling fluid chemistry drilling fluid property paraffin molecular...

... Abstract This paper reports the field performance results of a comparison of chemical and microbial paraffin control systems. The two systems were selected based on laboratory screening work. Well selection was based on production rates, produced fluids, and prior paraffin treatment history...

... capillary tubing has out performed the more conventional plunger lift. The injection system is also very effective in treating downhole corrosion, paraffin and scale, buildup and in dissolving salt buildup. This capillary injection system could provide a new approach to solving many oil and gas well...

... ABSTRACT One of the common oil-field wellbore problems is paraffin deposition. Even though hot oiling is usually the first method tried for removing paraffin, few operators appreciate the limitations of hot oiling and the potential for hot oiling to aggravate well problems and cause formation...

... Lift and Paraffin Removal. Now, however, plungers are also being used to: Produce liquids in extremely low pressure reservoirs Produce liquids in retrograde condensate wells Remove water from coal seam methane gas wells Prevent paraffin buildup in dual zone wells Prevent paraffin...

... is composed primarily of paraffin and the other of asphaltenes. Both paraffin and asphaltenes are natural constituents of most crude oils and their presence is not necessarily a cause for alarm. Only if the well seems to have problems is an investigation warranted. With the different constituency...

... ABSTRACT The use of a crystal modifier to control paraffin deposition in hydraulically pumped wells in Hartzog Draw has proven successful. There are currently thirty wells, 11,000 BOPD, being treated chemically for paraffin. Before the chemical program was initiated, the wells were being...

... ABSTRACT One of the most recurrent problem in the oilfield is the removal of paraffin deposited on downhole equipment and near-wellbore. Several field experiments were conducted to evaluate the effect of hot oiling for either the removal or redeposition of paraffin downhole. Laboratory work...

... ABSTRACT A chemical system which is capable of generating heat in situ has been used to remove hydrocarbon deposits, mainly paraffin, from surface equipment and flow lines in the Gulf Coast. The treatments resulted in increased production throughout the structures. The chemical system...

... ABSTRACT Hot oiling as a paraffin removal process and general maintenance technique has been used for years in petroleum production. It is still one of the first tried methods of restoring low or lost production whether due to paraffin or mechanical problems. Hot oiling is so readily accepted...

... production rate that may be as much as 2–5 times less. Factors adversely changing the pore size distribution, and hence the capillary pressure, at the production well are migration of fines, precipitation of crude oil components (paraffins and asphaltenes), and campaction of the sand due to pressure draw...

... ABSTRACT Formation damage caused by the precipitation and deposition of paraffin or asphaitene particles has been a recurrent problem in the production of crude oil. A number of well established oilfield operations have been found to aggravate these organic deposition problems. Laboratory...

... should be sent to the Society of Petroleum Engineers office. Such discussion may be presented at the above meeting and, with the paper, may be considered for publication in one of the two SPE magazines. Abstract Factors that influence paraffin deposition were investigated in laboratory experiments...