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Патент USA US2111062

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March 15, 193s.
c. c. BROWN
2,111,062
MEANS FOR SEALING OFF PIPE IN WELLSl
Original Filed June 8, 1936
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March 15, 1938.
C. C_-BROWN
2,111,062
MEANS FOR SEALING OFF PIPE IN WELLS
Original Filed June 8, 1956
5 Sheets-Sheet 2
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CC Brown
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March 15, 1938.
> C, C, BROWN
2,111,062
MEANS FOR SEALING OFF PIPE IN WELLS
Original Filed June 8, 1956
5 Sheets-Sheet 5
Patented Mar. 1.5, 1938
UNITED ST TES
2,111,062
MEANS FOR SEALÍNG OFF PIPE» IN WELLS
Cicero C. Brown, Houston, Tex.
Application June 8, 1936, Serial No. 84,074
Renewed August 23, 1937
14 Claims.
My invention relates to equipment to be em
ployed in deep wells and pertains particularly to
the means for closing the lower end of the cas
ing, liner, screen or other pipe set upon the bot
5 torn of the well.
It is an object of the invention to provide a
valve or sealing device which may be positively
operated to close the lower end of the well so
that no leakage of fluid upwardly into the liner
10 or screen may take place.
I desire to provid-e a setting tool by means of
which the liner and screen may be set in posi
tion in the well and to employ the lsetting string
to positively close off the lower end of the liner
or screen before the setting string is removed
from the well.
The invention resides in the construction of
the valve which closes the well and the arrange
ment whereby it may be operated by means of a
setting string.
With reference to the drawings herewith, Figs.
1, 2 and 3 are upper, intermediate and lower
views, respectively, of a. liner to be set in the
well, the views being partly in elevation and
25 partly in central longitudinal section.
Figs. 4, 5 and 6 are similar views showing the
upper, intermediate and lower portions, respec
tively, of the liner and setting tool but showing
the parts in position different from that shown
30 in Figs. 1, 2 and 3.
‘
Fig. 'l is a central longitudinal section through
the valve which closes the lower end of the liner.
Fig. 8 is a section similar to that shown in
Fig. 7, but showing the rotatable valve turned
through 90°.
Fig. 9 is a transverse section on the plane 9_9
of Fig. '7.
'
Fig. 10 is a transverse section on the plane
Ill-I0 of Fig. 8.
40
in position in the well, certain parts being broken
’
the lower end of the well and adapted to be oper
ated by the setting string shown at 8 extended
downwardly within the liner.
In Figs. 1 to 3, inclusive, I have shown the
setting string positioned within the linery and
screen and engaged therewith in the manner
.in which the parts are assembled when the liner
is introduced into the well.
Referring particularly to the packer 6, it will
l0
be seen that said pac-ker has at the upper end
a 'packer setting sleeve 9, the upper extremity
of which is beveled at I0 to guide the setting
string therein.
Belo-w this upper end is a recess
having a lower shoulder II upon which the dogs 15
I2 of the setting string may engage when the
packer is to be set. The setting sleeve has a
downward extension I3 thereon to which is con
nected an interior collar I4 with upwardly pro
jecting arms I5, >the interior face of which is '
formed with ratchet teeth I6 to engage' with
the packer barrel I'I. The lower end of the
setting sleeve is- connected at I8 with the collar
I9 at the upperend of the packer. It will be
seen that when the setting dogs engage upon the
shoulders II a downward thrust thereon will
move the collar I4 downwardly relative to the
packer barrel and the engaging teeth I6 will
prevent its return upwardly, thus expanding the
packer 26. In thus moving the collar I9 down 30
wardly to expand the packer a pin 2l is` sheared
01T.
The packer barrel I'I is extended downwardly
through the packer and is connected by the
coupling 22 to the screen 4. The lower end of 35
the screen is in turn connected at 23 to the valve
housing 1. The lower end of the valve housing
is in turn connected with the set shoe 5 in the
usual manner.
'
Fig. 11 is an assembly view showing the liner
away for greater clearness.
(Cl. 166-20)
enclosed within theA housing 'I for sealing off
'
Fig. 12 is a broken bottom plan view of the
valve shown in Fig. '7.
Referring particularly to Fig. 11, I have shown
the well as having been equipped with a well
'casing I which has been cemented in position
at 2. 'I'he well has then been drilled with, a
smaller drill downwardly into the producing for
50 mation and has a liner 3, screen 4 and set shoe
5 thereon. The liner is equipped adjacent the
upper end with a packer 6 of ordinary construc
tion and the set shoe is connected with the
The interior of the housing 23 has threaded 40
engagement at 24 with the locking. nipple 25,
which extends upwardly within the lower end of
the screen to furnish attachment for the setting
tool. The interior surface of the locking nipple
has a shoulder shown at 26 toward the lower 45
end which furnishes an upward abutment when
the setting string is locked within the strainer.
Below theshoulder and space‘d‘therefrom is an
inwardly projecting pin 21, the purpose of which
will be later explained.
50
The set shoe at the lower end of the vvalve
housing is formed with a back pressure valve
therein. There is a valve seat ring 28 screwed
strainer through a valve housing 1. The i'nven- n into the interior of the set shoe and having a
tion is concerned particularly with the valve
central opening for the passage of liquid there
55
2
through.
2,111,062
Said opening is normally
closed
is normally held in closed position .by a spring
the two balls 55 are housed downwardly within
the chambers 54 when the valve is in open posi
tion, as shown in Fig. 8, but when the lower valve
member 35 has been rotated through 90° the
39 seated upon a transverse support 3l which
serves as a guide for the downwardly extending
into the lower ends of the passages 35 in the
Yagainst 4upward. flow of fluid therethrough by
means of the back pressure valve 29. Said valve
valve stem 32.
Above the set shoe and back pressure valve
is a manually operated valve which is adapted
10 to be closed through the operation of the set
plate 33.
In setting the liner and screen in position and
operating the valve which has just been described
the lower end of thersetting string is particu
10
ting string. The construction of this valve will
larly constructed for that purpose.
be best understood from Figs. '7 and 8. There is
a lower stationary valve plate 33, which is screwed
within the valve housing at 34 forming there
with a rigid engagement. This plate is recessed
on its lower side to form a chamber for the lower
relatively rotatable valve member 35. Both the
end of the setting string 8 is engaged with a cou
pling 58, the lower end of which is engaged with
valve plate 33 and the rotatable valve 35 are
formed with longitudinal openings 36 in the plate
and 3l in the rotatable member. These two pas
sages will be normally in registration so that
there are two longitudinal passages through Vthe
Valve member' for the passage of fluid.
The lower Valve plate 35 is secured nonrotat
25 ably to a valve stem 38 extending axially through
the valve members. Said stem has at its lower
end a circular nut 139, which may be screwed
within a recess 40 in the lower end of the ro
tatable plate 35. When in that position it may
30 be locked against rotation by a set screw 4l
shown in Fig. 12. The nut is also locked against
rotation relative to the valve plate 35 by means
of a second set screw 42, also shown in Fig. 12.
'I'he valve stem projects downwardly from an
35 upper operating sleeve 43. Said sleeve is a cup
shaped member having upwardly extending side
walls 44 and a bottom plate fitting closely against
the valve plate 33 and rotatable relative to said
plate. It has openings 45, 45 therein which will
40 normally register with the openings 36 and 31
through the valve members. The walls of the
operating sleeve are spaced from the inner walls
of the valve housing. There is at one side there
of a laterally projecting lug or key 46, shown
45 best in Figs. 9 and 10. This lugcooperates with
two stationary upwardly extending ñngers 4l
on the plate 33 toY limit the rotation of the oper
ating sleeve relative to the valve member. On
the interior of the cup adjacent the upper end are
50
balls 55 will be projected upwardly by the springs
two opposed inwardly extending lugs 48, the up
per ends of which are beveled as shown at 49
in Fig. 8. Below these lugs 48 the interior wall
is thickened at 5D and intermediate the length
of the thickened portion I have placed a packing
ring 5l. As will be seen from Figs. 7 and 8, the
packing ring is approximately triangular in cross
section, one side being dovetailed within an an
nular recess in the thickened wall 53. The inner
lip 52 of the packing projects into the passage
Y60 through the operating sleeve to engage with the
setting string as will be later noted. I provide
a stufling box at 53 around the valve stem 38
and within the plate'V 33 to prevent leakage of
liquid around therrotating stem 38. The lower
65 rotatable valve member 35 is formed at points
90° away from the openings 3l with chambers
54 to house ball members 55.A Said balls are
held upwardly in the `chambers 54 by means of
coil springs 55 bearing at their lower ends againstV
the lower wall of the chamber and tending to
hold the ball upwardly into the lower ends of
passages 35m the plate 33. There is van open
ing shown at 5l in the `lower ends of the cham
bers 54 to allow circulation upwardly therein of
75 liquid from’the well. It will be understood that
The lower
the setting barrel 59. The transverse locking
pin 69 tends to hold these parts in engagement.
This pin, together with a lower locking pin 53a,
are extended across the tube to serve also to ob
struct the downward passage with thepñushing
fluid of foreign material such as sticks, string
and similar matter.
Y
Spaced downwardly from the lower end of the
20
collar is a packing collar 6|. Between the collars
58 and 6l is arranged an anti-friction bearing
race including a ring 62, an upper ring 63, and
anV intermediate row of balls E4. YThe lower ring 25
52 of the race is adapted to engage the upper
end 55' of the locking nipple E5.
The packing collar 3! has an outwardly eX
tending packing gasket 65 ñxed thereon, said
ring projecting in such manner as to Vengage 30
within the cylindrical inner surface of the lock
ing nipple. It has an overhanging and down
wardly extending flange Slithereon to engage
above the reduced upper ends 58 of the latching
dogs 69.
l
35
The latching dogs have inwardly extending
upper ends to engage over a shoulder 1D on the
outer surface of the setting barrel 59. These
dogs depend downwardly from the shoulder and
have at their lower ends outwardly projecting 40
fingers ll, the upper portion of which is beveled
to engage against the shoulder 25 in the locking
nipple.
Below the locking dogs is a sleeve 'l2 having
a threaded engagement on the outer surface of 45
the setting barrel 59 and adapted to be screwed
longitudinally thereon. The upper end of this
sleeve has its outer diameter increased and the
upper portion thereof is beveled at 'i3 to contact
or wedge within the lower ends of the locking
dogs 69. On the outer surface of the sleeve l2
and extending downwardly beyond the lower end
thereof are keys or ñngers '14, which are adapted
to engage with the upwardly extending lugs 48
on the operating sleeve.
Y
'
55
Spaced below the sleeve 12 is a collar 'l5 which
acts as a stop, limiting the downward movement
„of the sleeve 72. The lower end of the collar 'i5
will ordinarily contact in sealing relation with the
gasket or packing member 62.
In setting the strainer in the well I introduce
the setting string downwardly through the liner
and screen and engage the lower end thereof
within the valve housing and the lower end of
the strainer. The parts are then locked in posi 65
tion, as shown in Figs. 2 and 3, the sleeve ‘l2 be
ing screwed upwardly along the setting barrel to
engage beneath the Vlower ends of the latching
dogs Vwhich are moved outwardly and clamped
against the shoulder 26. The two parts are thus 70
locked rigidly together. 'I'he lower ring 52 of the
bearing race is held stationary against the upper
end 65 Yof the locking nipple, and serves both as a
stop Vbearing and as a seal’ against the passage
of ñuid.
A seal is also'made at the upper end 75
2,111,062
of said nipple by the packing member 66. There
3
This type of
is another seal formed toward the lower end
valve is not materially impaired by erosion of
of the setting string by the .packing gasket 52.
the iiuid passages as a seal will still be maintained.
Thus there will be no opportunity for the circu
Ul lation of liquid between the lower end of the set
ting tool and the locking member.
'
The valve member at the lower end of the valve
housing will be in open position while the liner
and strainer are lowered into position at the bot
Fluid may be circulated down
10 tom of the well.
wardly through the liner during this operation
and it will be able to pass through the openings
45, 36 and 31 and past the back pressure valve
29 around the lower end of the set shoe. When
15 the device is placed upon the bottom of the well
it is then desired to close the valve at the lower
end of the strainer and this may be done as
follows:
f
rl’he laterally extending key or finger 7i! on the
20 sleeve 12 will, by rotation of the setting string,V
be brought into contact ñrst with the stop p-in
21 and then with the interior lug Q8 at the upper
end of the operating sleeve. The pin 21, being
stationary, will tend to hold the sleeve 'l2 sta
25 tionary while the setting barrel is rotated. This
will screw the sleeve 12 downwardly until it en
gages the upper end of the stop collar l5. The
setting tool is thus released from the screen be
fore the valve is opened. Further rotation will
30 then tend to move the key or finger ’M with'the
locking nipple and thus rotate the operating
sleeve through the engagement of the key with
the lug 48 as previously noted. When the oper
ating sleeve is thus rotated, rotation will be corn
35 munieated to the stem 33 and to the lower valve
member 35. These parts will be rotated relative
to the valve plate 33 and tend to close the same.
Th'e valve will be rotated until the outer lug 46
engages against the stationary stop member ‘il
40 thus indicating that the valve has been closed.
In this position the balls 55 will be projected up
wardly to further close any passage of liquid
through the valve plate 33, which might tend
to leak around the valve. Thus if the upper por
45 tion oi the valve plate 33 should be clogged with
material and tend to leak between the same and
the lower wall of the operating sleeve ¿i3 the
valves 55 will further seal and prevent _such leak
age.
50
leakage of any liquid whatever.
The latching dogs 69 having been released by
the downward movement of the sleeve 12 it will
now be possible to pull the setting sleeve upward
ly and proceed to the setting of the packer 6. The
packer setting device which is disclosed particu
55 larly in Fig. l is no part of the present invention.
It comprises setting dogs I2, which are loosely
mounted at their upper ends to allow the lower
end T6 to move outwardly against the interior of
the liner.
Said dogs will therefore eventually
60 engage above the shoulder l l on the setting sleeve,
Further, it cannot easily become clogged. Ex
perience has shown that nails, sticks and other
foreign material lodging in the passages` 36 will
be sheared off by the closing of the valve and
thus not prevent closure. The setting string
which is employed in ‘operating the valve may
also be used in setting the packer and will serve l0
as a tubing in flowing the liquid from the well.
The advantages of this form of seal are many
and will be obvious to those skilled in the art.
What is claimed as new is:
l. A well strainer, a valve housing secured
thereto, a valve plate iixed in the lower end there
of, said valve plate having an opening there
through for passage of fluid, a valve disc housed
on the lower side of said plate and having an
opening to be brought into registration with the 20
opening in said valve plate, an operating sleeve
in Ysaid housing above said- plate to which a set
ting string may engage, and means con said oper
ating sleeve engaging said valve disc to rotate the
saine when said operating sleeve is moved rotat 25
ably.
2. A well strainer, a valve housing secured
thereto, a valve plate fixed in the lower end there
of, said valve plate having an opening there
through for passage of fluid, a valve disc housed
on the lower side of said plate and having an
opening to be brought into registration with the
opening in said valve plate, an operating sleeve
in said housing above said plate to which a set
ting string may engage, an axial stem on said 35
operating sleeve rotatable in said valve plate
to move said disc to bring the opening therein
into or out of registration with the opening in
Said plate.
3. A well strainer, a valve housing secured
thereto, a valve plate iixed in the lower end there
of, said valve plate having an opening there
through for passage of iluid, a valve disc housed
on the lowerside ofsaid plate and having an
opening to be brought into registration with the
opening in said valve plate, an operating sleeve
in said housing above said plate to which a set
ting string may engage, means- on said operating
sleeve engaging said valve disc to rotate the same
when said operating sleeve is moved rotatably,
and a ball valve mounted in said disc adapted to
engage in the opening in said plate when said
sleeve is moved to close said openings.
fl. A well strainer, a valve housing at the lower
end thereof, a valve plate ñxed in said housing
and having fluid passages therethrough, a valve
disc fitting rotatably on the lower face of said
plate, fluid passages in said disc, an operating
sleeve on the upper side of said plate, an axial
stem on said sleeve extending through said plate 60
as shown in Fig. 4. The downward movement of - to engage said disc whereby the rotation of said
the setting string therefore will move the setting sleeve will rotate said disc to move the passages
sleeve downwardly and compress the packer 6 in therein into or out of registration with said pas
sages in said plate, and means to rotate said
the usual manner. The setting tool may then be
65
sleeve.
l
65 adjusted in position in the well and may be used
5. A well strainer, a valve housing at the lower
as an eduction tube if desired. Otherwise, it
end thereof, a valve plate fixed in said housing
may be withdrawn from the well.
,
and having ñuid passages therethrough, a valve
It will be seen that I have devised a valve for
disc iitting rotatably on the lower face of said
closing the lower end of the well which may be
plate,
fluid passages in said disc, an operating 70
positively
operated
to
close
off
and
seal
against
70
the passage of liquid in either direction through sleeve on the upper side of said plate, an axial
the lower end of the strainer. The well is thus stem on said sleeve extending through said plate
equipped with the usual back pressure valve, and, to engage said disc whereby the rotation of said
in addition, with the manually operated valve sleeve will rotate said disc to move'the passages
75 which is adapted to form a tight seal against the therein into or out of registration with said pas 75
4
2,111,062
sages in said plate, means to limit the movement
of said sleeve, and means torotate said sleeve.
6. A well pipe, a valve housing thereon, a valve
plate in said housing having a fluid passage
therethrough, a valve disc on the lower side of
said plate having a passage to register with the
passage on said plate, a valve sleeve above said
to rotate the same to register said openings and
plate formed with openings therein to align with
discharge iiuid therethrough.
the opening in said plate, a stem on said sleeve
10 engaging said disc to rotate the same with said
sleeve through 90°, and a valve in said disc en
gaging in the opening in plate to close the same
when said sleeve is rotated to bring the opening
in said sleeve out of alignment with the openings
15 in said plate.
‘7. A well pipe, a valve housing thereon, a valve
plate in said housing having a fluid passage
therethrough, a valve disc on the lower side of
said plate having a passage to register with the
20 passage on said plate, a valve sleeve above said
11. A well pipe, a valve housing at the lower1
end thereof, a valve plate therein having fluid 10
openings, a valve disc lying against said plate
and having openings therein adapted by rota
tion to be brought into and out of registration
with the openings in said valve plate, a setting
string extending downwardly from the surface
and having a sealing engagement above said 15
valve and means on said string engageable with
plate formed with openings therein to align with
said disc to rotate the same to register said open
ings and discharge fluid therethrough, and ad
ditional means to close, the openings 'through
said plate when said openings are out of regis
the opening in said plate, a stem on said sleeve
tration with each other.
engaging said disc to rotatefthe same with said
sleeve through 90°, and a valve in said `disc en
25 gaging in the opening in plate to close the same
when said sleeve is rotated to bring the opening
in said sleeve out of alignment with the openings
in said plate, and a setting string operable from
the upper end of the well to engage and rotate
30
and having openings therein adapted by rotation
to be brought into and out of registration with
the openings in said valve plate, a setting string
extending downwardly from the surface and hav
ing a sealing engagement above said valve and 5
means on said string engageable with said dise
said sleeve.
`
8. A well pipe, a valve housing at the lower end
thereof, a valve plate therein having ñuid open
ings therethrough, a valve disc below said plate,
an operating sleeve above said plate and fixed
35 to rotate with said disc, said disc and plate hav
ing openings therethrough adapted by rotation
of said sleeve to be brought into and out of regis
tration with the openings in said plate, a setting
string extending downwardly through said pipe
and having a sealing engagement with said sleeve
whereby said sleeve may be rotated.
9. A well pipe, a valve housing at the lower end
thereof, a valve plate therein having fluid open
ings therethrough, a valve disc below said plate,
an operating sleeve above said plate and fixed
45 to rotate with said disc, said disc and plate hav
40
ing openings therethrough adapted by rotation
of said sleeve to be brought into and out of reg
istration with the openings in said plate, a set
ting string extending downwardly through said
50 pipe and having a sealing engagement with saidY
sleeve whereby said sleeve may be rotated, means
to limit said rotation and'ball valves in said disc
to close the openings in said plate from below.
10. A well pipe, a valve housing at the lower
55 end thereof, a valve plate therein having ñuid
openings, a valve disc lying against said plate
.
'
i2. A well pipe, a valve housing at the lower
end thereof, a valve plate therein having fluid
openings therethrough, a valve disc adjacent said 25
plate, an operating sleeve fixed to rotate with
said disc, said disc and plate having openings
therethrough adapted by rotation of said sleeve
to be brought intov and out of registration with
the openings in said plate, a setting string ex
tending downwardly through said pipe and hav
ing a sealing engagement with said sleeve where-V
by said sleeve may be rotated, and means to limit
said rotation.
Y
13. A well strainer, a valve housing at the low
er end thereof, a valve Vplate ñxed in said Vhous 35
ing and having fluid passages therethrough, a
valve disc ñtting rotatably against one face of
said plate, ñuid passages in said disc, an operat
ing sleeve on said plate, an axial stern on said
sleeve to engage said disc whereby the rotation 40
of said sleeve will rotate said disc to move the
passages therein into or out of registration with
said passages in said plate, means to limit the
movement of sai-d sleeve, and means to rotate
45
said sleeve.
,
14. A Well pipe, a valve at the lower end there
of including a transverse plate having iiuid open
ings, a rotatable plate adjacent thereto having
openingsY therein adapted by rotation to be,Y
brought into and out of registration with said 50
fluid openings, means to center said rotatable
plate, a setting string, means on said rotatable
plate to form a sealing engagement with said
string whereby said rotatable plate may be
55
moved.
CICERO C. BROWN.
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