Page 172 - Environmental Control in Petroleum Engineering

a
crr

Table 5-1 3
N
Substitute Materiafs for Drilling Fluid Additives 2.
_. 3
s
Additive Toxic Component Use Substitute Material rs
a
5
Chrome lignosulfonate/ Chromium Deflocculant Polyacrylate andfor s.
lignite polyacrylamide polymers 3
Sulfomethylated Chromium Deflocculant Polyacrylate and/or z
tanninldichromate polyacrylamide polymers 5
Sodium chromate Chromium Corrosion controi Sulfites, phosphonates. and amines s.
H,S
Zinc chromate Chromium W,S control No~~hromiu~ scavengers 7Y
Pentachlorophenol Pentachlorophenol Biocide Tsothiazolins, carbamates, and z
2
gluteraldehydes 3
x
Paraform aldehyde Formaldehyde Biocide I sothia~olins, carbanla te s , and 3
gluteraldehydes 9
Arsenic Arsenic B iocide fsothiazdins, carbamates, and a
h.
gluteraldehydes 3
rc
Lead-based pipe dope Lead Pipe thread sea~ant/Iubri~ant Unleaded pipe dope a
3.
x
Barite Cadmiumlmercuryl Mud densifier Chose barite from sources low h
bariudlead in cadmium, ~ercury~ and lead.
Source: ufrer T ~ u ~ ~ e ~
1992.
Copyright SPE, with permission.