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Aug- 3, 1948.
.
l. T. MINYARD
_
2,446,293
BY-PASS FOR ROTARY MUD SCREENS
Filed Dec. 27, 1944
I IIIIIIIIJIII/III
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Patented Aug. 3, 194-8
2,446,293
as
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'
rem- oFFicE
2,446,293
BY~PASS FOR ROTARY MUD SCREENS’
'
Ira T. Minyard, Odessa, Tex.
1
ApplicationDecember 27, 1944, Serial No. 570,013
4 Claims. (Cl. 21_0—ll49)
1
This invention relates generally to rotary mud
screens for cleaning shale and cuttings from the
rotary or drilling mud employed in the drilling
of oil Wells in which the mud is fed into the screen
from the drilling unit by a conveyor trough or '
pipe, hereinafter referred to as the flow line,
and thereafter passes through the screen into
a receptacle or mud box. More speci?cally, the
present invention is directed to the‘ provision of
2
including a conventional tubular ?ow line H to
which drilling or‘ rotary mud isv'suppliedr and
through which the mud normally passes into
9, rotating screen l2 for removing shale and
cuttings therefromfthe mud thereafer passing
through the screen and into the mud ‘box or
retainer it;
~
‘v 4‘ ‘
According to the present invention,‘ a by-pass
54 also is provided which interconnects the flow
a by-pass for the ?ow line whereby the flow of
line l I and mud retainer or‘ receptacle l3 whereby
the mud may expeditiously be diverted from the
the mud entering the‘ flow line maybe caused
screen and caused to ?ow directly from the drill
to move directly therefrom to the receptacle l3,
ing unit to the mud box when it becomes’ neces
this bypassing the screenl2. ‘
sary to use hulls, jell flakes, or the like, in order
The mud is caused to'flow from line I I into the
to restore circulation while drillng,_it being un 15 screen, or ‘selectively from line H into the by-pass
derstood that lay-passing of the mud is essential
ill under control of‘ valve means generally desig
in such case as passage of the mud through the
nated l5'and pivotally disposed at the junction
screen would remove the hulls or jell ?akes there
of the'?ow line and by-pass as at I5.
f
It will ‘beunderstood that the flow line H
Heretofore, drilling operators have found it
and b'yépass' Ill may be of any cross-section suit
necessary to remove the screen when the hulls
able for the purpose, the only requirement being
from.
_
'
or jell ?akes are used in the mud, or to vemploy
expensive valves and lines to cut the flow line
completely around the mud screen. Obviously,
such methods are time-consuming as well as
expensive.
It is also an object of the present invention
to provide novel and simple valve means suitable
for use with the aforedescribed ‘by-pass and
adapted to effect the desired ?ow of the mud by
a simple manipulation of the valve means;
'
that the valve means 15 be formed in such a
manner that when the valve means is in the
position shown in" full ‘lines in Figure 2, the
opening between the» ?ow line and by-pass. be
closed, and'whe’n the valve means is in the dotted
line position of Figure‘ 2,lthat the flow line he
completely out off so ‘as to provide‘ a continuous
channel from the‘?ow line through the by-pass
only.
'
'
‘
As disclosed, ?ow line“! “I is substantially square
Still other objects and advantages of the in
in 'cross-section,_ and, accordingly, the valve
vention are those implied from'or inherent in
means I5 conveniently is'vformed rectangularly,
the novel construction, combination, and ar
being comprised of a sheet of rubber H, or the
rangement of parts as will become more clearly 35 like, adapted inter?ttingly to engage the side
apparent as the description proceeds, reference
walls ll! of the flow line and being of sufficient
being had to the accompanying drawings in
length to seal the opening I9 in the bottom wall
which:
_
2!! of the ?ow line and to engage the top wall 2i
Figure 1 is a, plan view of a rotary mud screen
thereof when the valve means is moved about the
which employs a by-pass and valve means there 40 pivot axis l6 through an angle of approximately
for according to a preferred embodiment of the
forty ?ve degrees.
invention,
The sheet of rubber l1 preferably is rigidly
Figure 2 is an enlarged fragmentary sectional
supported between a pair of steel plates 22 and
view illustrating the by~pass and valve means
23 which are secured together as by rivets 24
disclosed in Figure 1,
45 and are formed somewhat smaller than the rub
Figure 3 is a sectional view as seen along the
ber sheet whereby the edges thereof extend be
line 3-3 of Figure 2,
Figure 4 is a sectional view taken along the
line 4-—4 of Figure 2, and
yond the edges of the plates thereby to permit
the sheet yieldably to engage the walls of the
?ow line and thus provide a sealed connection
Figure 5 is a perspective view of the valve 50 therebetwe'en.
means in an inverted position.
A rod 25 provides the pivot for the valve means
Referring now to the drawings for a more de
and extends through and is secured to a tubu
tailed description of the invention and more par
lar member 26 which preferably is welded or
ticularly to Figure 1, the numeral it generally
otherwise suitably secured to plate 22 along one
designates an oil drilling system or equipment 55 edge thereof, substantially as shown. Rod 25
2,446,298
3
flow line into the screen, said valve means com
prising ?rst and second spaced plates and a rub
ber sheet disposed therebetween and extended
beyond the edges thereof whereby the rubber
sheet serves yieldably to seal the ?ow line and
the entrance end of the lay-pass selectively, a
means may be rocked about the pivot axis l6.
Thus, in use, when it is desired to divert the mud
from the screen and cause it to how to the mud
box directly, it merely is necessary to manipu
late handle 28 upwardly suiiiciently to completely
close the flow line.
_ ~
_
While ‘ the invention has been "described “with
4
pass and adapted when in the second position
thereof to close the flow line, between the by
pass and screen, prevent flow of mud from the
conveniently is journaled in the side walls l8,
a packing gland preferably being provided as at
21 and the rod at that side being bent at right
angles to provide a handle 28 whereby the valve
10
iearseetreate one of ‘said plates and disposed
"transversely of the flcw'line and pivotally sup
.pgrted therein for providing pivotal movement
respect to a speci?c structural embodiment there
of, it will be understood by those skilled in the
*‘6f the valve means between the two positions
or scope of the invention as de?ned ‘by ftlieiiape
*roe'i-io'r manually moving the valve means be
thereon and crank means disposed exteriorly of
art that the invention is susceptible ofeadditional
embodiments without departing from the spirit 15 the ‘new line and operatively connected to said
pended claims.
Having thus described the‘i‘i'i'vehti'oii, what ‘is
tween the twopositions thereof.
“33in an ‘oil ‘drilling system, in combination
withia?low line for feeding drilling mud, a screen
claimed is:
1. In an oil drilling system of the character 20 into which the flow line discharges and a recep
taclelfor receiving-the mud from the screen; a
conduit connected to the ?ow line and receptacle
and liiorming a bypass around the screen from
drilling mud into the screenra mud receptacle
the'flo'wli'ne'to the receptacle, and a valve mount
for normally ‘receiving the mud which vpasses
the new line for alternately closing the
through the ~ screen, 'a» conduit connected to the 25 ed
entrance
end of the by-pass and the discharge
flow line and receptacle and :iorming ~'a;-by.~pass
end of the 'flow‘line, between the by-pass and
for feeding the mud directly from thei?ow’line
s'cieeic.
, ,
to the receptacle, atwo position valve meansdis
v4/121 en ‘oil drilling system of the character
posed within - thea?ow‘ line .at the, junction-of the
by-pass therewith ‘and operative, when in .the 80 disclosedithe combination of a mud screen, a
mai‘n'cond'ui't "for conducting' or feeding drilling
?rst :position thereof, to close theentra-nce end
mud ‘i‘nto'the screen,-a mud receptacle for nor~
of the by-pass to prevent-?ow of mud into the
many receiving the mud which passes through
by-pass and operative, ,when in'thersecondrposi
me'sefeen, a bypass conduit for feeding the
tion thereof, to close-the ?ow: line, between‘ the
directly from the'main conduit to the mud
by-zpass andscreen, to prevent flow ‘of mud» from 35 mud,
rec'epta‘de'and
avalve located in the main con
the flow line'into the screen "and‘to direct :the
nearer closing'the entrance end of the by-pass
mud into the by-pass_ and means disposed-ex
conduit ‘for causing the ‘mud to flow from the
disclosed, the combination -;of a "rotary mud
screen, -a flow line iorrconducting, or --feeding
teriorly of the flow line and in operative con
main ‘conduit to the screen, said valve being mov
‘nection with :said valve means rfor ~moving ‘the
able
to a position to close the main conduit, be
same between said firstand second position at 40 tween "the by-pass conduit and screen, for
will.
'cj'aiisin'g'the mud 'to'?ow from the main conduit
2. In an ‘oil :drilling i‘systemioi ithe'chara'cter
disclosed, the ‘combination ‘of aa. ‘rotary mud
screen, a new line for a'conducting ¢cr ~feeding
drilling “mud :into the ‘screen, a vmud receptacle
for rnorriially receiving tithe “mud ‘which passes
through the screen, Y a eonduitfconnectedto the
?ew rline - and receptacle and forming ea .byepass
for feeding the mud directly from rthe?owiline
to the receptacle, a two position valve means-dis;
posed within the'?ow, line ‘at the-junction of the
by-pass therewithand adapted when-in the ?rst
position‘thereof to close the entraneeend of‘the
?ow line to prevent how of mud-into the 11951-
thi‘cugh’the'by-“pass ‘directly to the receptacle.
‘
IRA T. MINYARD.
REFERENCES CITED
ail‘he-.following.references ~are~0f record in the
?le-of this :patent:
UNITED emcee ‘PATENTS
Number ‘
__1-,-_903-,g'zgi
2,329,295
_ Name
Date
.Burrell __e ________ __ Apr. 18, 1933
Reagan __________ __ Sept. 14, 1943
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