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Note added at 2003-01-23 12:18:30 (GMT)
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workover = капитальный ремонт (скважины)

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Note added at 2003-01-23 12:20:10 (GMT)
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Не очень понятны затруднения Asker\'a. Трудно найти словарь, в котором бы эти термины не встречались.

Lingvo - workover капитальный ремонт ( скважины )

Maybe...

workover fluid
жидкость для ремонта скважин

LINGVO 8.0 - ЭЛЕМЕНТАРНО, ВАТСОН

http://oilterms.hut.ru/cgi-bin/testcgi2.pl

Workovers
A workover is any operation on an existing well be it an oil, gas or injection well that materially alters the physical condition of the well. There are many different types of workover including: scale treatment by injection, wax cleanout, recompletion, acid stimulation, fracture stimulation, water shut-off, gravel packing and reperforations. Often to carry out this work the well must be killed which means that the selection of the kill pill fluid is critical.
A kill pill requires that a fluid with a greater hydrostatic head than the reservoir pressure be placed in the well. Since the well will have been previously completed to produce at peak efficiency there will be a tendency for the workover fluid to leak into the formation. A good workover fluid is clean and devoid of any solids. A poor fluid will not only cause a potential well control problem but could also damage any perforations or the formation by plugging with insoluble solids. Therefore any chemical used must be able to flow back on finishing the workover when the well is brought back onto production or it must be destroyed by flow to oil or treatment with acid or water. Some typical workover kill pills are given below:
Workover Fluid Kill Pill Solids Wash System
Brine Sized Salt Under-saturated Brine
Brine Calcium Carbonate Hydrochloric Acid
Brine Oil Soluble Resin Diesel or Xylene
Brine Fine Grained Cellulose Sodium Hypochlorite
Brine H.E.C. and X.C. Polymer Hydrochloric Acid
There are three critical things that must be tested for in a kill pill:
1. Does the "filtrate" from the workover fluid and the fluid the kill pill is mixed with damage the formation?
2. Will the kill pill prevent losses?
3. What is more important in terms of well productivity, will it come out again?

The two Cryogenic Scanning Electron Microscopy photos show, at increasing magnifications, kill pill polymer (the dark areas) blocking pores which is preventing flow to oil. The polymer had invaded the plug and had not been broken fully by the application of hydrochloric acid.
www.corex.co.uk/workover.htm






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Note added at 2003-01-23 16:20:19 (GMT)
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to kill the well = заглушить скважину

http://oilterms.hut.ru/cgi-bin/testcgi2.pl



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Note added at 2003-01-23 20:32:10 (GMT)
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Or:
Растворы для заглушения скважины