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Патент USA US2131868

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291 3196>
K. BOLTON ET AL,
WELL MEASURING
Filed/Jan. '7, 1938
3 Sheets-Sheet l
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29
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INVENTOR.
Kewne?h Bolton
By John E. Wi lef»
@ct 4, 1938.
y'
K. BOLTON ET AL
¿131,88 -
WELL MEASURING
Filed Jan. '7, 1958
3 Sheets-Sheet 2
45'
65
4
INVENTOR.
.
Kenneth
By ~JOÍ7n
Bolton.
Weiler.
_
Í
' Patented Oct. 4, 1938
2,131,868
UNITED STATES PATENT; OFFICEy
2,131,861;
_
WELL MEAsUaiNG
Kenneth Bolton, Pittsburgh, Pa., and John'E.
Weiler, Duncan, Okla., assignors to Hallibur
ton Oil Well Cementing Company, Duncan,
Okla.
Application January 7, 1938, Serial No. 183,758
8 Claims. (Cl. 331-1265)
This invention relates to apparatus for meas
uring the depthoi.' oil wells or the like and more
particularly to apparatus for automatically con
trolling the unreeling of a measuring line from a
5 drum in response to movement of the line into
the apparatus being cut away to show the in
ternal construction.
In cementing an oil well it is common practice
to keep track of the movement of a plug which
follows a quantity of iiuid cement as it is being
an oil well.
‘
pumped into the well, apparatus for this purpose
Apparatus for measuring the depth of awell consisting of a measuring line having a weight
or for determining the position of an object connected to its lower end and which weight fol
moving in an oil well is well known. An example , lows the plug. The line is spooled upon a reel
10 of apparatus suitable for this purpose is found in and controlled by a hand-operated brake. The 10
the United States patent to Halliburton 1,692,037 operator releases the brake to permit the line
granted November 20, 1928, for “Well sounding and weight to move until the weight strikes the
device”.
plug, this being determined by feeling of the
f
It is a particular object of the present inven
15 tion to devise improvements in apparatus of the
type referred to in the above-mentioned patent
and in which movement of the line into the well
will be automatically controlled or governed.
It is a further object of the invention to pro
20 vide automatic means for measuring the move
ment of a plug or other object traveling down
line. Such measuring apparatus has gone into
extensive commercial use. However, the oper
ating of the line is tedious and not always accu
rate, especially in very deep wells, or where the
wells are not straight.
,
In accordance with the present invention it is
proposed to provide apparatus which will enable 20
the operator to determine the position of a ce
wardly into an oil-well, which plug may be for
example of the type used in the cementing of oil
wells, as shown and described in United States
25 patent to Halliburton 1,369,891, granted March
1, 1928, for “Method and means for cementing
oil wells”.
It is still another object of the invention to
inenting plug without feeling of the line and with
out manually controlling the brake on the reel.
Although the apparatus is thus primarily de
signed for use in connection with the cementing 25
of an oil well, lt will be obvious to those skilled
in the art that the arrangement may be used
for purposes other than cementing operations
provide automatic means for controlling the un
reeling of a flexible member from a reel or drum
upon which it is wound.
and wherever it is desirable to measure the posi
tion of an object in a Well or to determine the 30
depth of a well.
Other objects and advantages reside in cer
tain novel features of the arrangement and‘con
Referring to the drawings in detail, and first
to the embodiment of the invention shown in
Figures 1 and 2, it will be seen that an oil well
struction of parts as will be more apparent from
35 a consideration of the following description taken
in connection with the accompanying drawings,
in which:
II provided with a casing I2 which for purpose
of illustrating the invention may be regarded as
'
'Figure 1 is a somewhat diagrammatic repre
sentation of an oil well having apparatus con-‘
40 structed in accordance with one embodiment of
- the invention associated therewith, a portion of
the well being shown in cross-section;
is there illustrated as consisting of a bore hole 35
f
Figure 2 is a plan view, partly cut away, of the
reel and control means shown ln Figure 1;
Figure 3 is a somewhat diagrammatic repre
sentation of an oil well with another embodiment
of the invention shown in connection therewith,
a portion of the well being shown in cross-sec
50 tion;
Figure 4 is a plan view of the reel and control
means employed inthe arrangement of Figure 3;
about to be cemented in the well. _Within the
casing I2 is located a cementing plug I3 which
may consist of a wooden body provided with a 40
rubber cup I4 at >its upper end. The plug I3
diiîers from those commonly employed heretofore
in that it is provided with means for latching it
to a measuring line I5 which extends upwardly
through the casing I2 and out through a stuffing 45
box I6 on the casing head I1.
The latching means referred to above may
consist of a. pair of members I8 pivoted to each
other at the top, and connected to the measuring `
line I5. The lower ends of the members I8 pro 50
ject laterally as illustrated and are normally
urged outwardly under the inñuence of a small
and
coil spring I9. Integral with the plug I3 is a latch
Figure 5 is an enlarged view of a portion of . receiving member 20 which may consist merely
55 the apparatus shown in Figures 3 and 4, part of 0f a cylindrical member having an inwardly ex
A2
2,131,868
tending flange adapted to overlie the laterally
projecting portions of the latch members I 9.
`
Located within the casing head, and held by
means of a manually operable pin 2l, is a go
devil 22, this member having the measuring line
threaded therethrough. When ~it is desired to
release the measuring line from the plug I3 the
pin 2l may be pulled, allowing the go-devil 22 to
travel downwardly and strike the latch members
10 I8. The lower portion of the go-devil 22 is pro
Si
vided with la conical recess 23 so as to enable it
to readily collapse the latch members I8 and re
lease the same from the plug upon the go-devil
striking these members.
15
The upper end of the casing. I2 beneath the cas
ing head I1 is shown provided with a laterally
extending pipe 24 through which mud or other
fiuid may be pumped in forcing the body of iluid
cement upon which the plug I3 is presumed to
20 rest downwardly into the well. It will readily be
seen that as long as the latch members I8 are con
nected to the plug I3, movement of the plug
downwardly will pull the measuring line I5 with
it into the well.
25
The casing head I1, in addition to being pro
vided with a stuiling box I6 mentioned above, is
unreel due to its own weight but can be moved
only in response to movement of the cementing
plug I3 or other device to which the line may
be connected, such as would result when fluid is
being pumped into the well above such a plug.
It is to be noted that the brake arrangement is
such that when the initial tension referred to
above, say 300 pounds, is overcome, any further
increase in tension acts to release the brakes
further and enable the reel to revolve faster and
the line to be unwound at a greater speed. On
the other hand,- the minute that the tension is
lowered, the brakes tend to set and prevent
further unreeling of the line. In this way the
operation of the line is rendered wholly automatic 15
and no particular attention by the operator need
be paid thereto.
It is within the purview of the invention to
carry out the principles illustrated in Figures 1
and 2 in a variety of ways. One additional way 20
is by means of the apparatus illustrated in Figures
3, 4 and 5. Referring to these figures in detail,
and first to Figure 3, it will be seen that a well
identical with that illustrated in Figure l is there
shown and the parts which correspond to the 25
arrangement of Figure 1 have been similarly
provided with a stall’ 25 on which a pulley 26 is
designated.
mounted, the measuring line I5 extending over
The main difference in the apparatus of Figures
3, 4 and 5 from that of Figures 1 and 2 involves
the particular mechanism for controlling the 30
operation of the reel upon which the measuring
line I 5 is wound. In Figures 3, 4 and 5 the reel is
designated 4_4. It is mounted upon a shaft 45
which may be controlled by a brake operated by
means of the hand lever 46, if desired. In addi 35
tion to the hand-operated brake, a hydraulic
brake is associated with the reel 44. The hy
this pulley and from there to a reel 21 which has
30 associated with it a measuring device and an
automatic brake, which will now be, described.
The reel 21 may be mounted on a suitable
means, such as the post 28, by means of a shaft
29. In order to determine how much line has
35 been fed into the well, a measuring device is pro
vided. This device per se may be identical with
that shown and described in the Halliburton
Patent 1,692,037 mentioned above. It consists
of a measuring wheel 30 around which the meas
40 uring line passes, the wheel 30 being supported on
suitable arms 3| which are maintained in an ap
proximate balance by means of the weight 32.
Between the measuring wheel 30 and the reel 21,
a brake control ‘pulley 33 is provided, this pulley
45 being mounted upon a shaft 34 in such a way
that it can travel back and forth in front of the.
reel in parallel to the axis thereto as the line on
the reel is spooled or unspooled. The shaft 34
is carried by two lever arms 35, one on each side
50 of the reel, as shown in Figure 2. These lever
arms are pivotally mounted upon the shaft 29
and are connected by means of links 36 to brake
bands 31 adapted to cooperate with a brake
drum 38 integral with the ñanges on the reel. The
55 lever arms 35 may be biased in such a direction
as to normally cause the setting of the brakes
by means of a weight or spring. In the arrange
draulic brake may be of a known form and com
prising a small gear pump 41, the gears 48 in
which are caused to rotate by being connected
through a suitable gear train to a gear wheel 49
integral with the reel. These features particularly
are shown in detail in Figure 5.
'I'he gear pump 48 is connected by means of
suitable conduits 50 to a balanced control valve 45
the housing of which is shown at 5I. The gear
pump 41, the conduits 5U and the housing 5I for
the control valve may be illled with oil or other
fluid so that when the gears in the pump are
rotated oil will be caused to iiow in a circuit- 50
through the conduits 50 and the housing 5I of the
control valve. The arrangement may be such
that the valves within the housing 5I may be
closed, or so nearly closed as to create consider- .
able resistance to movement of the fluid there 55
through and thus operate as an effective brake
upon the reel 44. As shown in Figure 5, the
ment illustrated, a weight 39, together with as
valves 52 within the housing 5I may be of the
sociated link and lever mechanism, is shown for balanced type so that movement of iluid through
60 this purpose. The weight 39 may be adjustably . the housing 5I will not tend to either seat or un
60
mounted upon Va lever 40, one end oi’ which is seat the same. The valves 52 may be mounted
connected to` a=`flxed fulcrum 4I. N_‘ear the ful
upon a stem 53 and controlled by means of a
crum the lever 40 is connected by a link 42 to a
spring 54 the tension in which may be adjustable ' ’
bar 43 integral with the lever arms 35. The lever
as by means of the adjusting nut 55. The spring
54 bears upon a plate 53' integrally secured to the 65
valve stem 53. 'I'he stem passes through suitable
stuiling boxes 56 and 51 and terminates at its
65 mechanism 39 may exert such a bias upon the
lever arms 35 as to prevent releasing of the brakes
until a predetermined tension is placed upon the
line. For example, if the entire measuring line
suspended in the oil well would exert a tension,
70 in addition to its own weight, at the well head, oi’
around 300 pounds, the weight 39 may be so ad
justed as to prevent unwinding of the line from
the reel until more than 300 pounds lifting force
is exerted on the pulley 33. Thus, the arrange
75 ment may be so adjusted >that the line will never
lower end in a piston 58 within a cylinder 59 con
nected by means of a flexible tubing 60 to a ten
sion responsive device 6I carried by the frame 62 70
of the measuring apparatus.
As shown in Figures 3 and 4, the measuring
apparatus is similar to that mentioned above in
connection with Figures l and 2 and is also simi
lar to that described in the Halliburton Patent 76
3
2,131,868
1,692,037 mentioned above, except that means is
provided for causing a member thereon to move
relative to the frame 62 in accordance with the
tension in the line I5 as it passes through the
frame 62 from the reel 44 into the well.
'I'hus the measuring frame 62 is supported by`
means of arms 63 pivoted upon a shaft 64 con
nected to the post 65 upon-which the reel 44 is
mounted. One of the arms 63 may be provided,
10 with a balancing weight 66 which may be adjusted
if desired. The measuring wheel itself is shown
at 61 and may be the same as that described in
the Halliburton patent mentioned and provided
with a suitable counter 68 for indicating how
15 much line is removed from the reel.
In addition to the measuring wheel 61, the
frame 62 carries an idler pulley 69. Both the
measuring wheel 61 and the idler pulley 69 may
be provided with suitable rollers 16 which hold
20 the line in proper contact therewith.
Between the measuring wheel 61 and the idler
pulley 69 a tension responsive wheel ‘l'l is mount
ed. This wheel is connected through a suitable
yoke ‘12 to a piston rod 13 which carries a suit
25 able piston 14 mounted within a cylinder 15 to
which the flexible tubing 60 referred to above is
connected.
It will thus be seen that the arrangement isV
such that the spring 54 in the control valve hous
30
until this link parts. Various other devices could
be used for connecting the measuring line to the
plug.
While only two embodiments of the invention
have been shown and described herein, it is ob
vious that various changes may be made in the
construction and arrangement of parts without
departing from the spirit of the invention or the
scope of the annexed claims.
I claim:
1. Apparatus adapted for use in the cementing
of an oil well or the like including a plug adapted
to be pumped into the well with a batch of ñuid
cement, a measuring line connected to the plug,
and automatic means for feeding the line into
the well as the plug moves downwardly therein,
said automatic means having a brake cooperat
ing with the line and adapted, when set, to re
tard movement of the line and an arrangement
for operating the brake to release the same when 20
the line is subjected to a predetermined tension
due to pressure exerted on said plug.
2. Apparatus adapted for use in the cement
ing of an oil well or the like including a plug
iiuid Within the cylinders 59 and 15 and the con
duit 63 in such 'a way as to normally urge the pis
adapted to be pumped into the well with a batch 25
of fluid cement, a measuring line connected to
the plug, and automatic means for feeding the
line into the well as the plug moves downwardly
therein, vsaid automatic means including a brake,
lever mechanism for setting or releasing the 30
brake, and an arrangement for holding the lever
mechanism against movement and hold the brake
ton 14 upwardly, thus tending to place a bend
in set position except when the plug is moving.
ing 5| (see Figure 5) transmits pressure through
within the measuring line l5 at the point of con
35 tact of the tension responsive wheel 1I. As the
tension in the measuring line increases the line
adjacent the wheel 'Il tends to straighten out,
`causing the piston 14 to move downwardly and
thus causing the valves 52 to open wider and
40 cause the load upon the gear pump 41 to diminish,
thus permitting the reel 44 to rotate faster.
In addition to the parts mentioned above, a by
pass conduit 1'6 may be connected around the
pump t1 and this by-pass is provided with a con
~trol valve 11. It is also preferable to- provide a
surge tank somewhere within the system, and
such a tank is illustrated at 18.
'
Thus it will be seen that the operation of the
arrangement of Figures 3, 4 and 5 is similar to
50 that of the arrangement shown in Figures 1 and
2. If desired, the arrangement may be so ad
justed that the valves 52 remain closed until a
predetermined pressure is exerted upon the wheel
3. Apparatus adapted for use in the cement
ing of an oil well or the like including a plug
adapted to be pumped into the well with a batch
of fluid cement, a measuring line connected to
the plug, and automatic means for feeding the
line into the well as the plug moves downwardly
therein, said automatic means including a fluid 40
pump and means for controlling the resistance
to movement of the pump in response to tension
existing in said measuring line.
4. Apparatus adapted for use in measuring
depth in an oil Well or the like comprising, in
combination, a reel, a measuring line spooled
thereon, a device for indicating the amount of
line unspooled from the reel, a brake for con
trolling rotative movement of the reel and auto
matic mechanism for operating said brake, said 50
mechanism causing theY brake to set when less
than a predetermined tension vexists in said
measuring line and causing the brake to release
1l. This may be accomplished by pre-loading
the spring 54 as by turning the nut 55I downward
ly until a predetermined tension is placed therein
when more than a predetermined tension exists
which will have to be overcome before the valve
stem 53 can move or by substituting a weight for
depth in an oil well or the like comprising, in
the spring 54 or by otherwise suitably loading the>
60 valve stem 53.
In both embodiments of the invention shown,
the same means is- illustrated for latching the
measuring line to a. cementing plug. It is within
the purview of the invention to connect the line
65 to the plug by means other than that shown, al
in said measuring line.
y
, 5. Apparatus adapted for use in measuring
combination, a reel, a measuring line spooled
thereon, a device for indicating the amount of
line unspooled from. the reel, a brake for con 60
trolling rotative movement of the reel and mech
anism for operating said brake to set or release
the same, said mechanism being operative auto
matically to diminish the setting pressure on the
brake in response to increased tension in the 65
though the apparatus is not primarily designed
measuring line and automatically to increase the
for use except where some means is provided for
connecting the line to the plug. It is within the
setting pressure on the brake in response to de
creased tension in the measuring line.
purview of the invention, however, to merely pro
70 vide a connecting link between the lower end of
the line and the plug which would have a prede
6. Apparatus adapted for use in measuring
depth in an oil well or the like comprising, in 70
combination, a reel, a measuring lineI spooled
termined parting strength so that when it is de- . thereon, a device for indicating the amount of
sired to disconnect the line from the plug all that
will be necessary will be to prevent the reel from
75 rotating and exert pump pressure upon the plug
line unspooled from the `reeLa brake for con
trolling rotative movement of the reel and mech
anism for operating said brake, said mechanism
i
4
2,181,868
including a pulley engaging said line, a lever
8. Apparatus adapted for use in measuring
connected to said brake and pulley and means
for holding said lever against movement until a
predetermined tension is exerted in said measur
depth in an oil well or the .like comprising, in
ing line.
f
7. Apparatus adapted for use in measuring
depth in an oil Well or the like comprising, in
combination, a reel, a measuring line spooled
thereon, a device for indicating the amount of
10 line unspooled from the -reel, a brake for con
trolling rotative movement of the reel and mech
anism for operating said brake, said mechanism
including a pump connected to said reel, a con
trol valve, fluid conduits connecting Said control
valve to said pump and an arrangement oper
able in response to variations in tension in said
measuring line for controlling the position of
said control valve.
combination, a reel, a measuring line spooled
thereon, a device for indicating the amount of
line unspooled from the reel, a brake for con
trolling rotative movement oi.' the reel and mech
anism for operating said brake, said mechanism
including a pump connected to said reel, a con
trol valve, fluid conduits connecting said control
valve to said pump and an arrangement oper 10
able in response to variations in tension in said
measuring line for controlling the position of
said control valve, said arrangement including
a wheel and means for suspending the wheel for
free movement with movement of said measur 15
ing line.
KENNETH BOLTON.
JOHN E. WEILER.
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