...) runs on dark live oil at reservoir temperature to identify the onset of asphaltenes precipitation and bubblepoint during the same run. Black oil, a problem for visual and optical methods, is no barrier for this technology. Effects of inhibitors on solid-liquid equilibrium have been investigated...

... the assumption of paraffin precipitation in the reservoir as the cause for the low recovery factor, and eventually put to the test recovery strategies that would ensure the economical exploitation of the shallow deposits of paraffinic crude in Reconcavo Basin. This paper summarizes the major accomplishments...

... of seeding material, commingling of two incompatible waters, pressure reduction, agitation, evaporation, etc. Nucleation or the initial formation of a precipitate can occur for many reasons, e.g. dust particles, vibration, etc. Two basic nucleation mechanisms are recognized: homogeneous nucleation...

... precipitation from crude oil, a set of laboratory experiments was performed under controlled conditions. The experiments demonstrated that the application of a magnetic field can have a measurable effect on wary crude oil. Properties of wary crude oil samples, such as viscosity and wax out temperature, were...

... association, such as lower temperatures and less aromatic solvents, result in higher molecular weights and thereby result in flocculation and precipitation. 1 Typical Lloydminster heavy crude contains between 12% and 15% asphaltenes by weight, although it can contain as much as 22% in some fields...

... Abstract Reservoir fluids containing paraffin's and asphaltene's are common in the petroleum industry. The presence of these components causes significant operational problems during the life of the producing wells. The identification of wax and asphaltene precipitation conditions is the first...

...PRECIPITATION OF CALCIUM SULPHATE DURING CARBONATE ACIDIZING: MINIMIZING THE RISK J.R. DELOREY S. ALLEN L. MCMASTER this article begins on the next page F THE PETROLEUM SOCIETY PAPER 96-84 Precipitation of Calcium Sulphate During Carbonate Acidizing: Minimizing the Risk J.R. Delorey, S. Allen, L...

...HEAT TRANSFER ANALYSIS FOR DETECTION OF ASPHALTENE PRECIPITATION AND RESUSPENSION P.F. CLARKE B.B. PRUDEN this article begins on the next page F THE PETROLEUM SOCIETY PAPER 96-112 Heat Transfer Analysis for Detection of Asphaltene Precipitation and Resuspension P. F. Clarke, B.B. Pruden University...

... demonstrates the utility of such a model by investigating scale precipitation throughout a production system -- in the injection side, within the reservoir, in the -wellbore and in treating facilities. Introduction Scale problems occur when the concentrations of dissolved species in a water exceed saturation...

... Abstract Several disturbing results have been observed during recent studies into the compatibility of iron-contaminated acid with conventional additives and formation crudes. Along with the traditional problems of gellatinous iron hydroxide precipitation on acid spending, several additional...

..."PRECIPITATION CAUSED BY LIQUID CARBON DIOXIDE IN CARBONATE FORMATION TREATMENTS, A POTENTIAL PROBLEM RESOLVED" W.G.F. FORD T.R. GARDNER this article begins on the next page F PETROLEUM SOCIETY OF CIM PAPER NO. 80-31-36 ATM-08 THIS IS A PREPRINT - SUBJECT TO CORRECTION PRECIPITATION CAUSED...