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HISTORICAL PERSPECTIVE  85





                  HYDROCYCLONES





                                               The SILTMASTER®
                                    A 4-INCH HYDROCYCLONE FOR DESILTING MUDS
                                                              This Is the Picenco hydrocyclone design whose perfor-
                                                              mance in the field led to the term "desilting," and first
                                                              eliminated wall-sticking, resulted in holes closer to gauge,
                                                              increased drilling rates, and bit life, etc. when properly
                                                              rigged and with sufficient total removal equipment to
                                                              operate in spray discharge.
                                                              For many drilling rigs, a set of Picenco SILTMASTERS
                                                              large enough to process slightly more than the total cir-
                                                              culating rate will handle the solids load below good
                                                              screens. However, they will plug immediately under by-
                                                               passed screen conditions (unless protected by VOLUME-
                                                               MASTERS®) and will tend to plug quickly if over-
                                                               loaded (rope discharge) by relatively fast penetration
                                                               rates in medium and large holes.
                                                               In the case of higher drilling rates, BANDMASTERS®
                                                               or VOLUMEMASTERS* should be used in a stage
                                                               ahead of the SILTMASTERS. Picenco can advise you
                                                               on this if you furnish your mud circulation rate and
                                                               expected maximum bit penetration rate with each size
                                                               bit in your drilling program,
                                                               STANDARD SILTMASTER UNITS-shipped with cast
                                                               polyurethane bladders at no extra cost, unless Buna N
                                                               is specified.


                                               Dimensions and weights (uncrated):
                                                                 Win. Feed Rate                   Headers
                           Length        Width        Height      @ 75 Ft, Hd.*    Weight        Outside Dia.
              Model No.  Ins.  Cm.   Ins.   Cm.   Ins,    Cm.    GPSJ    L/M   Lbs.    Kg.    Inches    Cm.
               S 4-4     62    157    30     76    52     132    200     757    651    295     4»/i     11,4
               S 6-4     69    175    30     76    55     140    300    1135    975    442     514      14.0
               T 8-4     62    157    40     102   53     135    400    1514   1175    533     6%       16.8
               T10-4     69    175    40     102   55     140    500    1893   1375    625     6%       16.8
               T12-4     69    175    40     102   58     140    600    2271   1520    690     6H       16.8
               T14-4     85    216    40     102   58     147    700    2650   1760    800     6%       16J
               TIM       85    216    40     102   59     150    800    3028   2045    928     8H       21.9
               T20-4**  101    257    40     102   63     160   1000    3785   2400    1090    8ft      21.9
               T24-4**  117    297    40     102   66     167   1200    4542   2875    1305    8%       21.9
             * A new PICENCO head indicator is optional equipment Sptcity API or metric,
             1
               Two smaller units offer more flexibility in operation and maintenance, and costs very little more than one of these.
                                            The SOLIDSMASTER™

                                 A 3-INCH HYDROCYCLONE FOR SPECIAL APPLICATIONS
                                                              This cyclone is designed to make a very fine separation
                                                              at a constantly high feed solids content.
                                                              Although it operates in spray discharge, it is designed on
                                                              the very wet side of balance. Because the feed opening
                                                              will plug very easily., it must be used only downstream
                                                              from screens or scrubbers if coarse material is present.
                                                              The standard SOLIDSMASTER hydrocyclone has a
                                                              basic feed capacity of 22 GPM at 75 feet of head. It is
                                                              often equipped with special modifications for more or
                                                              less feed rate for special situations, such as power oil It is
                                                              also operated at an unusually high feed pressure equiv-
                                                              alent of 125 feet of head when unitized in a special
                                                              CLAYMASTER* unit for working on weighted water
                                                              base muds.
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