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Патент USA US2128073

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Aug. 23, 1938.
2,128,073
T. E. BRYAN
FLUID PRODUCING APPARATUS
Filed Dec. 23, 1935
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Thomas E Bryan,
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v2,128,073
-Patented Aug. l2_3,
. 4UNITED STATESv
PpsrEN'rA OFFICE
2,128,073f
FLUID PRODUCING APPARATUS
Thomas E. Bryan, oklahoma city, okla.
` Applicationl December 23, 1935, Serial No. 55,865
9 oisans. (Cl. 103-232l
invention. Such limitation is to be only by the
This invention relates in general to an appara
tus for flowing iluid from a well, or the like, where
the natural pressure within the well at the bottom
prior art and by the terms of the appended
claims.
thereof is insufficient to cause the iiuidto rise to .
6 the top of the well. More particularly, it relates
_
_
‘
l Referring now to the drawing, in which like
numerals indicate corresponding parts through- 5
to a device for employing gas, or the like, under
Figure l is a vertical cross-section, illustrat
pressure for the purpose of ejecting the fluid from
the well, and to a. means for admitting such gas - ing a device constructed in accordance with this
to the well at the proper time and place to cause invention disposed at the bottom of an oil or
similar well.
10
'l0 such ñuid to flow from the well.
Figure 2 is an enlarged vertical cross-section
In the past, various devices have been produced
illustrating the details of the gas admission valve
for the purpose of ilowing> the fluid from a well
where the natural pressure within the welll was
insufficient to cause the ñuid to flow, but these
l5 have, for the- most part, depended upon aerating
shown in Figure 1.
'
As illustrated in Figure 1, a casing I is placed
within the well in somewhat the customary man- ‘l5
ner and lowered to substantially the` upper bound
ary of the producing formation 2. A tubing 3 is
the column of fluid by introducing into the column
relatively small quantities of gas, thus lightening
the column of ñuid and making it possible for
' the natural pressure within the well to raise the .
20 column of iiuid to the top of the well and thus
cause the well to flow. At best, such an arrange
ment is useful only so long as the natural pressure
Within the well is high enough to raise a column
then lowered into the casing until its lower end .
4 extends below the lower end of _the casing to a -
point substantially at the bottom of the well hole. 20
The lower end of this tubing is threaded ex
ternally for the purpose of receiving a nut 5, this
nut being threaded both internally and external
ly. Surrounding the lower end portion of the »
of. ñuid after the same has been aerated to
' tubing 3 is an intermediate cylindrical member 6, 25
25 the greatest possible extent.
It is an object to provide a device _.of this curved at the upper end and joined to the wall
of the tubing 'I by any suitable means. This jointv
general type in which, so long as any pressure ex
ists within the producing formation at the bot
tom of the well suiiicient to cause a ñuid to rise
need’ not necessarily be a lead-proof ljoint.' Ad
jacent to its upper end, this member 6 is provided
30 within the well at all, such iiuid will be periodi-> with openings 8, for a purpose, which will be 30
presently set forth. Its lower end isthreaded
cally and automatically -ejected from the well.
A further object is to provide' a device which „ `to receive the collar 9,'the lower end of this collar
'does not depend upon the natural pressure at the being threaded upon the exterior of the nut 5A.
Adjacent to its upper end, but below the per
bottom of the well to force the ñuid out _of the
35
well.
'
'
Still another object is to provide a device of the
character set forth in which the pressure of the
gas being introduced for the purpose of flowing
the well, will not affect the amount' of ñuid pro
40 duced by the well.
>
`
'
-
` 'Another object is to provide a device in which
a gas introduced for the purpose of ilowing the
A forations 8, the cylindrical member -.6 is provided
with a packing. I 0 whichserves to close oil' the
annular space between the cylindrical member 6
and the internal wall of the casing I.Just below the packing III the tubing 3 and the -
member 6 are provided with substantially regis
tering'openings and a >nipple Il is inserted in
these openings to connect the same and provide“
a. passage between the exterior of the member 6
well will be governed solely by the relation be
tween the pressure due to the hydrostatic head of _and the interior of the tubing. Inserted in this 45
45 thecolumn of fluid within the tubing in the well, ' nipple is a valve seat member I2 which has an
vand the natural pressure existing at the bottom opening I3 therethrough adapted to be closed by
of the well substantially at the lower end of such 1 a check valve I4. This check' valve Il is hinged
at I5 and is provided with a s_top pin I6 to pre
tubing. .
With the foregoing and )other objects in view, vent it from opening too far.
u 50 this invention consists of various parts and com
Adiacent to its lower end, but above the nut
binations illustrated in the accompanying drawing 5, the tubing is provided with an opening for the
and set forth in the following description, it being purpose of receiving a nipple I 1 adapted to con
understood, however, that such drawing and de
nect the exterior of the tubing with a cylindrical
' ‘scription are only by way of illustration and are valve housing I8. An extra support I9 may also ,r
55 not to be taken as a limitation on the scope of the
2
alaaovs
be provided to assist in properly supporting the
valve housing, if so desired.
'I‘he valve4 housing i8 is provided with a pair
of spaced valve seats 2l] and 2i fitted within the
valve housing at positions above and below the
bottom of the well will cause the check valve I4
to reopen and the process will be repeated.
It is noteworthy that by the arrangement above
set forth, no fluid will be forced from the Well
until the column of liquid has risen in the tubing
connection with the nipple Vf. Each of these
members 20 and 2| provides a downwardly facing
the bottom of the tubing substantially equal to
At its lower end, the housing >is in
ternally threaded to receive a bushing 22, this
bushing serving the double purpose of limiting the
downward travel of the valve stem 23 and also
connecting the housing I8 with the support i9.
, valve seat.
Mounted upon the valve stem 23 in a position
to close simultaneouslyI against the respective
15 valve seats 2l] and 2l are a pair of valve elements
25 and 2li, thus forming a balanced valve con
trolling communication between the chamber in
to a height such that it will exert a pressure at
the natural formation pressure at that point.
On the other hand, the operation of the device is
so certain that when the column of fluid within 10
the tubing reaches such height, the pressure with
in and without the bottom of the tubing, will be
equalized and the gas automatically admitted to
ilow the tubing, without any attention on the part
of the operator.
15
It will thus be seen that the device is entirely
independent in its operation of any human factor
and that it serves to raise the fluid out of the well
termediate of the tubing 3 and the cylindrical
member 6 and the interior of the tubing.
- independent of the amount of natural pressure
U20 AAt its lower end, the valve stem 23 is threaded which may exist within the producing formation
to receive a plunger 26 which is locked in place at the bottom of the well.
on the valve stem by a lock nut 21. The plunger
It will be readily apparent that a means has
26 is adapted to reciprocate within the opening been provided for carrying out the objects and
28 formed within a plug member 29, fitted into advantages sought by this invention in a manner
as the lower end of the tubing 3 with a tight ût.
both efficient and practical.
In operation, the formation 2, whatever may be
Having thus described my invention, what is
its natural pressure, will produce a certain quan
claimed and desired by Letters Patent, is:
tity of fluid and this fluid will rise within the
l. In a well flowing apparatus, a tubing adapted
chamber between the casing and the member 6
to extend into the well, means to admit well- fluid
30 belowv the packing i0 into the nipple il past the into the said tubing, and means operatively in
check valve I4 and into the tubing 3. As the
dependent of said first means to admit a gaseous
formation continues to produce the fluid, the substance into said tubing, adjacent to the lower
column of liquid will begin to build up within the end thereof when the pressure of the fluid at
tubing 3 and will continue to build up until the the bottom of said tubing bears a predetermined
35 hydrostatic head of the column of fluid becomes relation to the natural formation pressure, where
20
25
30
35
substantially equal to the pressure existing out
by the fluid in saidV tubing will be forced out of
side of the lower end of the tubing. When this
condition prevails, the plunger 26 will move down
wardly because of the lack of any unbalanced
force tending to hold it up and the valve elements
25 and 2li will be moved away from their respec
tive seats. The annular space between the tubing
and the casing above the packing l0 is filled with
gas or a gaseous substance under pressure and
the well by said gaseous substance.
2. In a well flowing apparatus, a tubing adapt
ed to extend into the well, a check valve for ad
mitting well fluid into said tubing, and means 40
operatively independent of said check valve to
admit a gaseous substance into said tubing adja
cent to the lower end thereof when the pressure
of the fluid at the bottom of said tubing substan
this gas now enters through the opening 8 at the
upper end of the cylindrical member 6 and passes
tially equals the formation pressure, whereby the 45
fluid in said tubing will be forced out of the well _
' through the nipple I1 and around the valve ele
ments 25 and 24 to enter the tubing at a point sub
stantially at the bottom end thereof. It is note
50 worthy that the opening through the nipple Il is
quite large so that a considerable amount of the
gaseous fluid may pass into the lower end of the
tubing in a relatively short time. In fact, this
gas is permitted to enter the tubing at such a
by said gaseous substance.
3, In a well flowing apparatus, a tubing adapt
ed to extend into the well, means to admit well
fluid into said tubing, and a balanced valve oper 50
atively independent of said first means adapted
to admit a gaseous substance into said tubing ad
jacent- to the lower end thereof below said first
means when -the pressure of the fluid in said
55 rate that instead of mixing with the liquid within
the tubing it forms a large bubble or gas piston
tubing substantially equals the formation pres 55
sure, whereby the fluid in said tubing will be
below the column of fluid which has been created
within the tubing, and as gas continues to enter,
it pushes the entire column of f_luid toward the
80 top of the well. No flow is permitted from the
tubing into the chamber at the bottom of the well
below the packing I0 because of the check valve
forced out of the well by said gaseous substance.
4. In a well flowing apparatus, a tubing adapt
ed to extend into the well, means to admit well
fluid into said tubing at a point above the bottom 60
I4, and hence no substantial pressure is removed
65
from the piston at the bottom of the tubing until
the liquid has been forced out of the tubing, the
valves 25 and 24 will remain open until this
column of liquid has been forced completely out of
70
the well.
When this takes place, the pressure within the
tubing is at once relieved and the natural pressure
of the formation at the bottom of the well will
tien force the piston 26 upward to close the
valves ¿5 and 24, preventing further ingress of
75 gas under' pressure.
Then the pressure at the
thereof, a balanced valve for admitting a gaseous
substance into said tubing below the point of ad
mission of said well fluid, and means adapted to
cause the opening of said valve when the pressure
of fluid within said tubing bears a predetermined 65
relation to the natural formation pressure at the
bottom of the well.
y
5. In a well flowing apparatus, a tubing adapt
ed to extend into the well, means to admit well
fluid into said tubing, a balanced valve for ad 70
mitting a gaseous substance under pressure into
said tubing adjacent to the lower end of same,
and a plunger subject to the pressure within the
lower end of said tubing and to the natural forma
tion pressure at the bottom of the well and adapt
75
2, 128,073
v
3
ed to open said balanced valve when said pressure and a valve operable by a" predetermined ratio of
within the tubing rises to substantially the value pressure between the interior and exterior of said
tubing adjacent its lower end to admit said gase
of said pressure in the bottom of the well.
ous substance into said- tubing adjacent to its
6. In a well ñowing apparatus. means for seal
»
ing oiî the lower portion of the well to form a lower end.
8. In a well flowing apparatus, a means for
pressure chamber, a tubing closed at its lower
end having its lower end extending at least to sealing oif the lower portion of the well to form
substantially the level of the upper end of said a pressure chamber, a tubing extending into said
chamber, a check valve for admitting ñuid from chamber and closed at its lower end, a check
valve for admitting ñuid from said pressure
10 said pressure chamber into said tubing, means for
chamber into said tubing, at a point above the
conducting gas under pressure to a point adja
cent to the lower end of said tubing, and a valve , lower end of the tubing, means for conducting a
operable by a pre-determined ratio of pressure gaseous substance under pressure to a point adja
between the interior of said tubing adjacent its cent to the lower end of said tubing, anda valve
lower end and the interior of said chamber at operable by a pre-determined ratio of pressure
substantially the same level to admit the gaseous vbetween the interior and exterior of said tubing
substance into said tubing adjacent to its lower adjacent its lower end to admit said gaseous sub
stance into said tubing adjacent to its lower end.
end.
'
9. In a well flowing apparatuspa tubing adapt
7. In a well flowing-apparatus, means for seal
ing off the lower portion of the well to form a > ed to extend into the well, means to admit well
pressure chamber, a tubing closed at its lower
end and having its lower end extending at least
to substantially the level of the upper end of said
chamber, a check valve for admitting 'ilu'id from
25 said pressure chamber into said tubing at a point
above the lower end of said tubing, means for
conducting a gaseous substance under pressure
to a point adjacent to the lower end of said tubing
5
10
,
20
fluid into said tubing, valve means below said
iñrst means for controlling the admission of a
gaseous substance into said tubing adjacent the
lower end thereof, and means for fully opening
said valve means when the pressure in said tubing 25
adjacent the bottom thereof attains a predeter
mined relation to the formation pressure.
THOMAS E. BRYAN.
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