... Abstract Asphaltene self-association and precipitation are unfavorable processes that can occur during production, transportation, and storage of crude oils. The primary mechanisms of asphaltene self-association are dispersion interactions, electrostatics interactions, hydrogen bonding...

... injector well permeability migration precipitation formation damage Injection Rate society of petroleum engineers stimulation treatment injection water reduction simulation process simulation model physicochemical property formation damage model acid Stage III – Geological Sector Model...

... scale remediation oilfield chemistry scale inhibition paraffin remediation Artificial Intelligence Production Chemistry liquid phase Upstream Oil & Gas precipitation wax remediation Hydrate Remediation hydrate inhibition asphaltene inhibition Pedersen flow assurance wax...

... Production Chemistry Upstream Oil & Gas Brine spe international symposium application production well injection oilfield chemistry Aberdeen international symposium reservoir scale inhibition precipitation dissolution co 2 solubility reaction formation water Introduction Chemical...

... system expert system normal operation deviation early detection information real time system Upstream Oil & Gas precipitation oscillation Software Tool operational event discharge pressure detection operational variable society of petroleum engineers symptom diagnosis module...

... scale remediation production chemistry upstream oil & gas paraffin remediation hydrate remediation hydrate inhibition asphaltene inhibition wax remediation wax inhibition asphaltene remediation remediation of hydrates precipitation phase behavior upper asphaltene onset pressure...

... Table 2 SARA Analysis of precipitated solids SARA Analysis of Precipitated Solid Component % P/P SATURATES 3.9 AROMATICS 5.4 RESINS 2.6 ASPHALTENES 88.1 Due to the above mentioned facts, laboratory studies were initiated in order to establish if a stimulation...

... Abstract This paper describes a complex volatile oil reservoir fluid characterization process to develop an equation of state for compositional reservoir fluid simulation modeling of the asphaltene flocculation-precipitation phenomena, including the impact on rock permeability. The process...

... will be discussed along with how decisions were made. drilling fluids and materials drilling fluid selection and formulation Upstream Oil & Gas drilling fluid chemistry drilling fluid formulation drilling fluid property polymer Campos Basin application drilling fluid design precipitation...

... By analogy with models of quartz precipitation in sandstone fractures, the relative rates of growth and fracture opening may govern the emergent threshold from sealed to open fractures and determine whether fractures above that size are bridged or merely lined with a thin veneer of euhedral...

... (1) Ba 2 + + SO 4 2 − → BaSO 4 ↓ We assume that the chemical reaction (1) is irreversible. Permeability declines with the porous space filling by the precipitant. Mathematical Model for Sulphate Scaling The mathematical model (A-7) , (A-10...

... flow towards producers accounting for chemical reaction is developed, and an analytical solution is found. It allows obtaining a productivity index formula for PI decline prediction. The main result of the work is proportionality between the inverse to productivity index and time. precipitation...

... The developed methodology consists of the following steps: Detailed Characterization of the reservoir fluids Abstract Asphaltenes precipitation is one of the major operational problems affecting oil production in the Northern Monagas fields of Eastern Venezuela. Being a phenomena...

... of petroleum engineers stimulation gravel surfactant reduce formation damage ferneyne injection precipitation spe 69452 formation damage concentration acidizing case study novel methodology upstream oil & gas acid stimulation declination laboratory test Introduction Originally...

... (dead oils), followed by P&T studies provided important information about compositional characteristics and stability of the fluids under study, in terms of asphaltene precipitation tendency, and allowed selecting of a good asphaltene inhibitor to be injected in these wells, after P&T evaluation...

... behavior. Asphaltenes were obtained by precipitation with n-heptane and characterized by elemental analysis and spectroscopic techniques. Low hydrogen to carbon ratios, high aromaticities and high condensation of aromatic rings were the main characteristics of the asphaltenes from unstable crude oils...

... Abstract Crude oils produced from the formations are transported and processed at low temperatures where solid wax particles may precipitate. These solid particles cause additional pressure drop in production tubing, pipeline, and processing equipment and eventually cause plugging. Great saving...

... Abstract The precipitation and deposition of asphaltenes can cause serious problems during petroleum production that range from formation damage to total blockage of producing wells. A knowledge of the aggregation, precipitation and deposition mechanisms is fundamental to the development...

... Abstract In matrix acidizing operations in sandstone formations, special care must be taken to prevent the formation of undesirable precipitates generated by secondary reactions and by the cooling of the surrounding the wellbore. The fast and thorough recovery of the spent acid fluid...

... conditions for asphaltene precipitation. precipitation. The case of three wells which undergone several stimulation treatments is described and confirmed the asphaltene deposition. Introduction Camorim oilfield is located on the Sergipe-Alagoas Basin, approximately 6 Kmoffshore under water depths from 12...