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Патент USA US2121927

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June 28, 1938.
. ‘Filed Dec.’ 21, 1936.
2 Sheets-Sheet 1 '
Patented June 28,v 1,938
Julius Paul, Duluth, Minn, assignor of one-hall.’
p to
M. sellwood, Duluth, Minn.
Application December 21, 1936; Serial No. 116,946
(Cl. 103-9)
6 Claims.
the care of gas delivered by thepump and the
This'invention relates to double acting deep
well ?uid operated pumps, the principal object . latter for service solely as‘ a standpipe in insur
being to provide a more practical, simple and ing uniformity of pressure in the pump and pro- ' I
vided with a suitable adjustable safety valve, not
durable pump, e?iciently and dependably oper
able at great depths, especially in the art oi’ oil shown, to ‘control the working pressure of the‘ 4
power ?uid. The connection, above the motor of
Another object is to provide such a pump which the pump, to the gas standpipe 4 comprises an
will effectually care for air or gas encountered ‘ axially disposed. depending nipple 6 within which ’
is reciprocably mounted the uppermost end of
within such pumping operations.
Still other objects and advantagesgof the in
vention will appear in the following description
the ‘hollow piston stem 1, about which‘may be ‘
?xed any number of stu?ing glands, one of which
is suggested at 8 to insure against undue leakage.
Externally of this nipple-section 6 is a somewhat
Referring now to the accompanying drawings,
forming part of this application, and wherein
ll like reference characters indicate like parts:
Figure l is a broken central vertical section on
the line l-'-l of Figures 2 and 3 showing a pump
reduced portion 9 of the pump cylinder forming}
a chamber l0 intermediate of the nipple 6 and
about same internally ~of'the upper end of the
pump ‘cylinder, and which chamber also commu
unit within a common oil well casing, except that nicates as by the passageway II with the stand
the showing of the rotative twin gate valve is pipe 5. Within this reduced portion 9 ‘of the
pump cylinder is mounted the vertically inter
20 on the line_|—l' of Figure 4,for a better compre-v mittently reciprocal cylindrical valve l2, having‘
hension of the registration of the various ports a
during the operation of the device subsequently
set forth. The ?gure is a somewhat unusual
showing in that thehorizontalg; dimensions are
25 approximately one-half full sizeswhereas the ver
tical dimensions of the pump unit are materially
foreshortened so that the entire structure may
be illustrated in one ?gure.
the annular port or passageway I 3 thereabouts.
it being the exhaust port of the pump control
valve. This valve cylinder is provided with the
power supply ports i4 and I5 upon opposite sides
thereof,~ and which _,ports respectively register
alternately with the passageways l6 and l'|,'their
relative position with the gate valve 20 being
shown in dotted lines, Fig. 3. The valve I 2 in
its present position is shown as supplying power
through the port it to the passageway I 6, while
5—5, 6—6, '|—'I, 8—8, 9'—9,.and Iii-i0, Fig
the passageway I1 is communicating through'the
ure 1.{
_ .
' In Figure 1 there is a further modification - exhaust port I! .and discharging out of the port
IS in the wall 01' the reduced portion 9 of the
from the usual representation of a practical em-‘
- bodiment of the invention, in that the parts of pump‘ cylinder; the arrows in the drawings indi
the motor and pump illustrated as integral are cating such action. This position of the valve
~ cross hatched with alternate full and dotted lines is that just prior to its being drawn to its extreme
so that these simultaneously movable parts are lowermost position by continued action of the
motor piston which will be described later. In
more readily comprehensible.
I. represents the casing of an ordinary oil well, its present position the valve l2 as is obvious will
Figures 2, 3, 4, 5, 6, '7, 8, 9, and 10, are transverse
80 sectionsrespectively on the lines 2-2, 3-3, [-4,
theportion thereof here illustrated being that
found adjacent the bottom of the well and within
the oil therein, 2 represents the pump cylinder
within the casing, the lower end of whichcyl
inder is‘v attached to an ordinaryv packer, illus
. trated at 0, within the casing, and the extreme
lower end of ‘the pump suction pipe 82 is normally
' reciprocable within the oil in the'well.
The upper
-portion “ of this cylinder is provided centrally
and will have obviously swung this gate valve ,
anti-clockwise as vviewed in Fig. 3 of the drawings,
simultaneously turning the cylindrical valve stem
2| to the position illustrated in Figs. 3 and 4 of ’
the drawings. The limit of throw of the gate
valve 20 in either direction is governed by the
varcuate projections 85 of the block 86 ?xed
within the opposite side of the chamber i9. This
hollow cylindricalvalve stem 2| carries radially
disposed upon its ‘lowermost extremity the twin
of this central connection 3 are illustrated con
necticns for two standpipes land 5, extending to gate valve member 22 operable swingably within
the surface of the well, and the former being for _ the annularchamber 23 of the pump cylinder, it ‘
50 ‘thereof with the externally screw threaded con;
nection 3, to which is attached the power supply
line not shown of the-pump. Upon opposite sides,
have permitted power ?uid to'have coursed the
passageway l6 into the annular chamber l9 in
which is installed the swingable gate valve 20.
2 .
being noted that about the enlarged central por
tion of the hollow valve stem 2| is installed a
suitable ball bearing 24 upon which,rests the
combined block and floor member 86, the floor
portion 25 forming the bottom of the chamber l9
in which the gate valve 20 operates. Also at the
lower end of this hollow valve stem 2| is a second
ball bearing 26 to insure as nearly as possible non
frictional action of the rotation of this hollow
valve stem 2|. ‘
' '
Now the pump pistons 43 for pumping oil and
44 for the care of gas, though it may at times
handle some oil, being rigidly ?xed to and car
ried by the depending outermost extension 56
of the motor piston 3|, will obviously reciprocate
with the action just described of the motor
piston, and I shall now proceed to describe the
?ow of the pumped material, ?rst through the’ 10
It will be, noted, that the twin gate valve 22
Assuming as before stated that the valve l2
of the motor and the motor piston 3| are in
their un?nished downward stroke, the pump
pistons will be in like position, as shown, and the 15
is provided with a passageway 21 between the
two lateral terminals thereof which at all times
is in direct communication with the central power
15 passageway indicated at 28 in the various views
so that power ?uid is always available therein,
and while the passageway 21 is communicating
oil remaining in the chamber 46, below the piston
43, will obviously be forced downwardly, through
through the port 29 to the vertical semi-annular
the ball valves 41, (of which there may be any
desired number circumferentially about the tubu
lar connection 48 of the two pump pistons), and 20
outwardly into the space 4| between the pump
passageway 30 in one side wall of the pump, it
20 will be furnishing power directly against the
uppermost end of the motor piston 3|, and, as
before stated, will, when in the position illus
to the position illustrated in the drawings and
initially described, ready for another cycle.
cylinder and easing; while the gas in the similar- '
ly shaped and positioned chamber 49 below the
piston 44 will be forced through the passageway
trated and power is further applied, force the
motor piston to its ?nal lowermost position which
will complete the downward stroke of the con
5| and the ball valve 52 and passageway 53 into 25
the bore 54 of the hollow valve stem 1. Here
trol valve |2 by'action of the ring 32 ?xed about
the piston stem 1 engaging the ?nger-like mem
ber 33 formed integral with the bottom of the
valve I2, and extending radially inwardly and
30 about the stem 1 as more clearly shown in Fig.
2 of the drawings. At this change of the port
communications of the valve l2, it will be noted
that instantly power ?uid from the interior of
said valve will pass through the port I5 and pas
35 sageway IT to that portion of the chamber |9
upon the opposite side of the gate valve 20, and
instantly reverse its position, to that indicated
it must be noted that any air or gas thus lib
erated within the hollow stem 1 which leads to
the standpipe 4, is‘ entirely freed and avoids any
obstruction to the operation of the pump, and 30
there is located at 55 a ball valve of predeter—
mined pressure capacity under ordinary pump
ing conditions to function at say ?fty pounds
pressure, so that any oil which may have been
drawn therein and creating such pressure may
escape through said valve.
At this time during the continued down stroke
of the pump pistons 43 and 44, suction will be
created within the chamber 56 above the piston
43 drawing oil through the ball valve 51 from
the interior 59 of the tube 48, as communication
of oil to said tube through the piston 44 is ac
complished by the passages 69, see Figs. 8 and 9,
simultaneously with like action in the chamber
6| externally of the tube 49 above the piston
44 which will draw gas through the passage 62,
ball valve .63, and out of the central passageway
84 in the lower extremity of the pump, thus si
by the' dotted line 34, Fig. 3, from thatpreviously
described, simultaneously rotating the twin gate
valve 22 to its opposite position, as indicated by
the dotted line 35, Fig. 4, which controls the op
posite line of communication to the motor piston
just described, thus opening up communication
for the power ?uid from about the stem 1 through
. the passageway 21 of the twin gate valve 22 to the
semi-annular chamber 36 on the opposite side
of the upper end of the motor section of the
pump‘ cylinder; the interior of the upper portion
of this section or core being illustrated at 31 and
in which is mounted the lowermost ball bearing
26, previously‘described, and below which may be
installed any desired form of packing gland, as
illustrated at 3B; the exhaust from the chamber
multaneously ?lling these two chambers, 56 with
oil, and 6| with gas, to be forced therefrom. by
the reverse action or upstroke of the pump pis
tons 43 and 44.
Now when this upward stroke
takes place, caused as is obvious by the reverse
l9, of course, freely following the then opened
action of the motor piston previously described,
communication to the space 4| intermediate of
the pump cylinder and easing I through the pas
the oil within the chamber 56 will be forced up
wardly through the ball valves 64 in the station
ary core 65 of the pump cylinder (the latter be
ing provided with a suitable packing gland 66)
thence upwardly through the passageways 61
into the chamber 68, through the interior 69 of
the tubular connection‘ 10 between the station
ary cores 65 and 31 into the chamber 1| within
the core 31 and'thence through the discharge
port 12 into the space 4| intermediate of the
pump cylinder and well casing and on up to the 65
surface of the well. This action of course is si~
multaneous with the discharge of the gas within
the chamber 6| above the piston 44 which passes
through the passageway 13 and ball valve 14
into the bore 54 of the hollow valve stem 1.
sageways and ports l6, I4 and 50.
Just below the upper enlarged central portion
or core 31 of the motor section of the pump cylin
60 der is an annular passageway 39 communicating
with the passageway 36, so that power ?uid now
coursing this passageway 39 will be led to the
under or lower end of the motor piston 3| and
return it to its uppermost position or end of
65 its stroke, while the exhaust from the upper end
thereof ‘will be forced through the passageway
39 and ports 29 and 23 behind the twin gate
valve 22, thence through the passageway 49 into
the space 4| between the casing | and the pump
cylinder. At the conclusion of the uppermost
stroke of the motor piston _3| carrying with it
the stem 1, which latter is providedv with a ring
Obviously when the two pump pistons 43 and
44 are on their upward stroke discharging the
42 ?xed thereto similar to the ring 32 previously ' contents of the chambers 56 and 6|, just de
described and spaced therefrom the proper dis
scribed, they will tend to form a vacuum in the
tance, the control valve | 2 will be raisedagain
chamber 46 beneath the piston 43, and also in
the chamber 48 beneath the piston 44, and which oil discharge, the discharge from said gas pis
will result in the chamber 46 being ?lled by ton extending, axially of said other pistons and
passage of the oil from the chamber 59 in the means for operating said reciprocable valve
tubular connection 48 through the ball valve ‘I8 ‘ means.
3. A deep well ?uid pump comprising a cas
and passageway 19 into .said chamber, and, in,
respect to the chamber 49 the upward‘ motion
ing, a cylinder within said casing, a motor pis
of the .piston 44 will cause the gas or possibly
some oil in the passageway 84 to be drawn
through the ball valve 80 and passageway ‘8|
ton within said cylinder, a combined oil and gas
10 into said chamber 49.
It will be noted that the intake of the pas
sageway 84 is materially above ‘the lower ter
minal of the pump suction pipe 82, and to which
latter any length of pipe may be attached in keep
ing with the depth of oil being encountered.
It will also be noted that the annularly shaped
pumping piston within said cylinder and oper
able in unison with said motor piston, a source
of power ?uid, intake and exhaust valves for 10
directing said power ?uid alternately to opposite
ends of said motor piston, intake and exhaust
valves for control of oil to one end of said com
bined piston and discharging it therefrom to the
surface of the well, and intake and exhaust valves 15
for control of gas to the opposite end "of said
’ motor piston 3| and the uppermostv pump piston
combined piston whereby to pump gas separately
43 form opposite ends of the cylinder 58 which
recipro'cates externally of the stationary core 65
20 and internally of the pump cylinder 2, thus form
ing ample length of piston for any desired num
ber of piston rings suggested at 83, and that
the connection of the pump cylinder to the pack
er 0 is accomplished by the foot member 88 in
from the well, and separate means to conduct
25 which may be installed any desired number or
form of packing means as suggested at 81; it be
ing deemed non-essential throughout the draw
ings to illustrate the threaded connections of
thetoil and gas to the surface of the well. ,
4. A double acting deep well ?uid operated
pump having a power piston ,ajinwgas and ?uid
pumping pistons, all of said- pistons being oper
able in unison, an outer casing, a cylinder con
centric with and spaced/from said casing and
within which said pistons operate, a valve with
in the upper end 'said cylinder for control of
power ?uid alternately to opposite ends of said
power piston, means axially of all of said pis
thevarious parts of the pump.
I Having thus described my invention, what I
tons to conduct gas from above the ?uid in the ~
claim and desire to secure by Letters Patent, is:
1. A deepv well ?uid pump comprising a cas
ing, a cylinder within said casing, motor, oil
in said gas pumping piston to control the ?ow of
gas therethrough to said axial means, and valve
means in said ?uid pumping piston to control the
pumping and gas pumping pistons within said
?ow of ?uid therethrough.
35 cylinder and connected to operate in unison, a
source of ?uid power and intake and exhaust
valves for directing said ?uid power alternately
to opposite ends of said motor piston, intake
and exhaust valves for admitting oil to opposite
40 ends of said oil pumping piston and discharg
ing it therefrom to the surface of the well, in
take andexhaust valves for admitting gas to 0p
posite ends of said gas pumping piston and dis
well to the surface of the ground, valve means 30
'5. In a deep well ?uid operated ?uid and gas 35
pump, anouter casing therefor, an inner pump
cylinder, a ?uid motor therein, an axial power
?uid supply through said casing to operate said
motor, ‘?uid and gas pumping pistons in said
cylinder and operated by and in unison with said 40
motor, an independent gas discharge within said
casing to receive the pumped‘ gas and‘ conduct -
it to the surface of the well, a standpipe within
charging it therefrom to the surface of the well said casing for automatic pressure control of
said ?uid power supply, and valve means where
45 independently of said oil discharge, the discharge
from said gas piston extending through said other by the ?uid pumped is discharged directly with
in said casing andv carried independently 'of said
2. A deep well ?uid pump comprising a cas
pumped gas to the surface of the well.
ing, a cylinder within said casing, motor, oil
6. A combined motor and pumping piston for
50 pumping and gas pumping pistons within said '?uid operated pumps comprising a hollow pis 50
cylinder and connected to operate in unison, a , ton stem, a combined motor piston, ?uid pump
source of ?uid power, reciprocable valve means ing piston and air or gas pumping piston ?xed
for controlling intake and exhaust valves for di
to said piston stem in spaced relation, valve‘ con-_
recting said ?uid power alternately to opposite trolled passageways through said ?uid pumping
55 ends of said motor piston, intake and exhaust piston for the alternate control of ?uid passing .
valves for admitting oil to opposite ends of said therethrough, and valve controlled passageways
oil pumping pistonand discharging it therefrom in said air or gas piston for the control of air
to the surface of the well, intake and exhaust
' valves for admitting gas to opposite .ends of said
60 gas pumping piston and discharging it therefrom
to the surface of the well independently of said
or gas passing therethrough to the interior of
said hollow piston stem.
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