Oil-based cutting fluids

Oils and coolants have recently been reported as common irritants in the electronics industry [20]. This problem has not been previously highlighted. In the paper quoted, however, the precise chemical culprits are not given. Historically, exposure to oil-based cutting fluids have been considered to be associated with cutaneous squamous cell carcinomata [42, 43], although no reports of this have as yet emerged among workers in the electronics industry. 

Uses Lubricant, emulsifier for oil-based cutting fluids, hydraulic fluids, rolling oils, slushing compds. 

Uses Emulsifier softener antistat lubricant for textile processing softener for compounding textile finishes emulsifier for petrol, and veg. oils lubricant in oil-based cutting fluids and drawing compds. defoamer in food-contact paper/paper-board emulsifier in mfg. of food-contact articles Regulatory FDA 21CFR 172.838.173.340,176.180,176.210,178.3400 DOT nonregulated... 

Tramp oil is caused when heat slideway, gear, hydraulic and spindle lubricants leak into water-based cutting fluids and can cause problems such as ... 

However, its cooling properties can be utilized when other materials are added to improve machining performance. One of the most common water-based cutting fluids is the so-called soluble oil, which, in fact, is not a true solution but an oiTin-water emulsion in which very fine droplets of oil are suspended in water. Such a fluid has very effective cooling power and the petroleum oil and its additives provide its lubricating and protective properties. 

Water from towns main supplies is usually suitable for the preparation of water-based cutting fluids. That from factory bore holes is also generally suitable, although occasionally it contains excessive amounts of corrosive salts. Water from rivers, canals and ponds usually contains undesirable contaminants, and should be tested before use. A good first test is to mix a small quantity of emulsion and allow it to stand for 24 hours in this time, no more than a trace of the oil should separate. If serious separation occurs, the water should be analyzed to indicate the sort of remedial treatment required. 

Methylglucosides also could find applications in water-based drilling fluids and have the potential to replace oil-based drilling fluids [801]. The use of such a drilling fluid could reduce the disposal of oil-contaminated drilling cuttings, minimize health and safety concerns, and minimize environmental effects. 

Interpretation of NMR well logs is usually made with the assumption that the formation is water-wet such that water occupies the smaller pores and oil relaxes as the bulk fluid. Examination of crude oil, brine, rock systems show that a mixed-wet condition is more common than a water-wet condition, but the NMR interpretation may not be adversely affected [47]. Surfactants used in oil-based drilling fluids have a significant effect on wettability and the NMR response can be correlated with the Amott-Harvey wettability index [46]. These surfactants can have an effect on the estimation of the irreducible water saturation unless compensated by adjusting the T2 cut-off [48]. 

Watanabe, S. 1998. Perpetration and characteristic properties of water-based cutting fluids additives. Recent Developments in Oil Chemistry (Trans world Research Network) 2 145-187. 

The disposal of drilling fluid waste has become a major factor in the use of chemicals in water-based drilling fluids and in the use of oil-based drilling fluids because the dumping of waste from conventional (i.e., non-synthetic) oil-based fluids (drilling fluid and cuttings contaminated with oil from the fluid) is increasingly prohibited. 

Figure 60. Rheograms of cuttings contaminated with oil-based drilling fluid slurries in seawater at 3 °C and 38 °C. (Reproduced with permission from reference 168. Copyright 1993 Society of Petroleum Engineers.)...

Other methods of disposing of cuttings from oil-based drilling fluids have been investigated and include cuttings cleaning (using solvents, surfactant solutions, and supercritical fluids) and incineration (combus-... 

Coolant Cutting lubricant Cutting oil Metalworking fluid Water-based cutting fluid Water-miscible cutting fluid... 

Organoclays have been used in a number of different commercial applications. They are used to control the rheology of organic fluids in a number of areas. They are also used in oil-based drilling fluids. Such fluids have to lubricate the drill bit, carry cuttings up and out of the wellhole, and provide appropriate back pressure in... 

Maintenance Absorbents used for maintenance operations including coolants, lubricants, oils, and cutting fluids. Maintenance absorbents will pick up water-based as well as oil-based fluids. 

These esters are excellent lubricity additives and coupling agents. Recommended as a replacement for mineral oil in cutting fluids, drawing compounds, high water base and fire resistant hydraulic fluids. They are water and oil soluble. 

Uses Defoamer, lubricant, and mold release for tech, applies, such as water-based cutting fluids, drilling and rolling oils, hydraulic fluids Features Low ash content... 

The chemical treatment methods reduce dispersability property, of drilling fluids through the increase of size of cuttings which improves separation and prevents the buildup of colloidal solids in the mud. These methods include ionic inhibition, cuttings encapsulation, oil phase inhibition (with oil-base muds), and flocculation. The mechanical solids removal methods are based on the principles presented in Table 4-55. 

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