close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2404132

код для вставки
2
July 15, 1946-
J. T. HAYWARD
~ 2,404,132
APPARATUS FOR USE IN LOGGING WELLS
Filed March 15, 1941
LO 0 O O
W.msk
O O O’ O O O O O
O O O
2 Sheets-Sheet 1
O O 0 O O
O O O O O 0 0
géwéwéwggmwééé é$$$$$$$$
O
O
O
O
O
O
O
O
O O
O
O
O O
O
O
O
O
O
O O
O
O
O
O
O
O
ENMEQQ 9 l
JOHN 7i HAYWARD uwmm
ATTORNEYS.
I‘ .16. McAsur?Nu & ltSTlNG
3mm: Wu“
July 16, 1946.
_|_ 11 HAYWARD
_
2,404,132
APPARATUS FOR USE IN LOGGING WELLS
Filed March 15, 1941‘
| VOLUME
1'
T_ J
M
/34 v
I
I
2 She'ets-Sheet 2
UNITS /N WELL
I
TO PUMP
.
36
|I
/3: /
7'0 DRILL/N6 $TR/NG_
|
\
5%]
Q‘
I
Egzzzzzmz I '
[6' 55:3:
5?
I
L________ __._|
JOHN 7‘. HAYWARD uvmvml
By
A TTORNEYS.
$13. MEASURING it TESTING
2,404,132
Patented July 16, 1946
UNITED STATES PATENT OFFICE
2,404,132
APPARATUS FOR USE IN LOGGING WELLS
John T. Hayward, Tulsa, Okla.
Application March 15, 1941, Serial No. 383,622
11 Claims. (Cl. 73-151)
1
2
This invention relates to the logging of wells
and particularly to apparatus for the logging of
rotary drilled wells during the drilling thereof.
The Hayward Patent No. 2,214,674, dated Sep
chart, the passage of the drilling ?uid through
tember 10, 1940, discloses a method for logging
wells during the drilling thereof by the employ
ment of a circulating drilling ?uid, wherein in
crements of the drilling ?uid passing through the
the well, or through that part of the well extend
ing from the drilling zone to the top of the well
through the annular space between the drilling
string and the wall of the well bore.
In accordance with one embodiment of this
invention, starting with any given depth of the
drilling zone, the volume of drilling ?uid ?owing
through the well is continuously measured and
drilling zone and thence to the top of the well
are traced in their passage through the well by 10 the passage of an increment of the drilling ?uid
measuring the depth of the stratum being drilled
from the drilling zone to the top of the well is
at the bottom of the well in synchronism with
traced on the chart by causing the pen or other
the rise of the increments from that stratum to
marking device to initiate a graph on the mov
the top of the well, so that each increment of the
ing chart at the instant the increment passes
drilling ?uid reaching the top of the well may be 18 the drilling zone depth and then tracing the pas
correlated with that stratum responsible for the
sage through the well of a volume of drilling ?uid
presence in that increment of materials charac-'
equal to the volumetric capacity of the annular
terizing that stratum, the increments reaching‘
space between the drilling string and the well
the top of the well being tested in various ways
bore for that depth, the graph being caused to
for the presence in the ?uid of such characteriz 20 terminate when that volume of ?uid has passed
ing materials. In such a method it is important
through the well. By this method the terminal
that each increment tested be accurately relat
point of the graph will indicate the emergence
ed to the depth of the stratum to which it refers
of that increment from the top of the well. To
in order to obtain a true and accurate log of the
correlate any test made on that increment with
several strata traversed by the wall and it is also 25 the depth of the drilling zone at the time that
very important that the logging take place dur
increment passed through the drilling zone, it is
ing the normal course of drilling of the well in
only necessary to follow back along the graph
order that the driller may be continuously ap
to the depth on the chart opposite the point of
prised of the character of the strata being drilled
initiation of the graph. A new graph is initiat
to avoid the ever-present danger of missing 30 ed on the chart immediately upon emergence of
strata having oil and gas producing potentiali
one volume of ?uid, traced as described, and ad
ditional volumes are similarly repeatedly traced
ties.
The present invention is directed particularly
on the moving chart to produce a continuous rec
to improvements in the Hayward method by pro
ord of the entire well or any portion thereof.
viding improved apparatus whereby the move 35 The scale upon which each graph is traced is
a scale composed preferably of units of volume
ment of the drilling ?uid increments may be con
tinuously traced in their passage through the
and the transverse width of the scale is arranged
well and. automatically and continuously record
to represent the volumetric capacity of the well
ed on a chart which is driven in synchronism
or of the annular space between the drilling
with the progressive downward movement of the 40 string and the well bore, as may be desired.
drill in the well, and upon which the several tests
Since the width of the chart covered by suc
ceeding graphs would become progressively
of the emerging increments, may be continuous
ly plotted so as to bring them in direct correla
greater as the depth of the well increased and
the volumetric capacities became proportionally
tion with the depths of the strata to which they
refer, to thereby eliminate much labor and to 45 greater, another embodiment of this invention
provides a means whereby these graphs may be
con?ned within a chart section of ?xed width,
by varying the effective values of the volume
units composing the scale upon which the graphs
In accordance with the present invention, a
chart bearing depth indicia is driven in synchro 60 are plotted, in accordance with the change in
the volumetric capacities of the well or of the
nism with the progressive downward movement
annular spaced referred to.
‘of the drill, while a marking device such as a pen
By tracing on the same chart the records of
or the like is driven in accordance with the volu
metric ?ow of the drilling ?uid through the well
the several tests made upon the emerging incre
and is caused to trace or plot, on the moving 5‘ ments of the drilling ?uid, in proper relation to
provide a greatly simpli?ed and more accurate
log of the well continuously during the actual
drilling thereof.
2,404,132
3
the depths at which the tested increments emerge
from the well, the actual depths to which the
travels downwardly through the interior of the
drilling string to the drilling zone in the vicinity
tests refer may be read directly from the chart
of the bit 'I and thence
annular space S between
the wall of the well bore
discharges the ?uid back
lation through the well.
and the logging operation thereby greatly sim
pli?ed and made more accurate.
A still more comprehensive log of a drilling
well may be made, embodying the apparatus of
this invention, by instrumentally recording on
the same moving chart other measurements, such
upwardly through the
the drilling string and
to outlet pipe 3, which
into pit I2 for recircu
A valved pipe I5 pro
vides means for withdrawing samples of the
drilling fluid emerging from the well through
as drilling rate, weight on the bit, torque on the 10 outlet pipe 3.
A strip chart, indicated generally by the nu
drilling string, power required per foot drilled,
meral I6 and of more or less conventional form,
etc. Such measurements can be and ordinarily
is driven in synchronism with the progressive
downward movement of the drill bit ‘I in the well,
appear on the chart at the depths to which they 15 being connected to the drilling string for this
purpose by a drive mechanism I"I driven from
properly refer, and can be correlated directly with
the information obtained from the circulating ' the crown block III. The details of the mech
anism I‘! for driving the chart I6 in synchro
?uid.
nism with the downward movement of the drill
The important feature in all of these embodi
ments is the provision, in accordance with this 20 do not form a part of this invention and any suit
able form of drive mechanism'may be employed
invention, of apparatus for automatically and
for this purpose. One such mechanism is illus
continuously tracing the passage of increments
trated and described in detail in applicant’s Pat
of the drilling ?uid through the well being drilled
on a chart moving in synchronism with the r ent No. 2,326,219, granted August 10, 1943. As
progressive downward movement of the drill in 25 stated, however, any other suitable drive mech
anism may be employed, it being important only
the well.
that the chart I6 be caused to move thereby in
By the terms "progressive downward move
synchronism with the progressive downward
. ment of the drill” or “progressive movement of
movement of the drill. The chart I 6 is driven at
the drill downwardly in the well” is meant,
wherever used herein, only those downward 30 any suitable rate such as, for example, one inch
foreach ?fty feet of downward progress of the
movements of the drill which represent progres
drill.
'
sive deepening of the well, since it will be recog
The drilling ?uid being pumped through the
nized that the drill will make many downward
are made at the time the formations to which
they refer are drilled, and they will, therefore,
movements in the well in the normal course of -' ' well is metered in any suitable way, as by means
drilling which do not constitute deepening of the 35 of a meter I8 mounted in pipe I4,‘ or if pump I3
well.
The various objects and advantages of this
invention will be more readily understood from
the following detailed description when read in
conjunction with the accompanying drawings 40
which illustrate, more or less diagrammatically,
apparatus suitable for practicing the methods of
this invention. It will be understood, however,
is of a conventional positive displacement ‘type,
it may be employed as a meter for this purpose
by suitably connecting thereto a counter I9 to
count the stroke cycles of the pump in a man
ner well understood in this art. The counter
I9 may, accordingly, be calibrated to read either
units of volume or simply stroke cycles, since
with this type of pump, the stroke cycles bear a
de?nite relationship to the volume of ?uid
ular apparatus, but that various changes may be 45 pumped, and the number of stroke cycles is
equally suitable for the purpose of this invention
made in details within the scope of the append
for measuring the volume of ?uid circulated
ed claims, without departing from the spirit of
through the well,
this invention.
In the drawings:
'
The ?uid meter, whether meter [8 or counter’
Fig. 1 illustrates, more or less diagrammatical 50 I9, is connected to any suitable mechanism, in
ly, an assembly of apparatus whereby the pas
dicated generally by the numeral 20, one form of
sage of drilling ?uid through a drilling Well is
which will be described in detail hereinafter,
that this invention is not limited to any partic- " '
traced on a chart driven in synchronism with
the downward movement of the drill, in accord
which is adapted to telemetrically drive a mark- 7
ing device 2I, such as a pen or the like, conven
55 tionally used with recorders of the type illus
trated generally, which traces a record of the
Figs, 2 and 3 illustrate, more or less diagram
passage of drilling ?uid through the well on the
matically, some of the details of the apparatus
moving chart I6, in a manner to be more fully
shown in Fig, 1, and
described hereinafter.
Fig. 4 illustrates a portion of a chart produced
The mechanism 20 is illustrated more speci?
in accordance with one embodiment of this in 60
cally in Figs. 2 and 3. The ?uid meter I8 or
Vention.
counter I9, for example, drives a splined shaft 22
Referring to the drawings and Fig. 1 in partic
on which is slidably keyed a disk 23,.the rim of
ular, there is shown a well I, having the usual
which frictionally engages the face of a larger
surface casing 2 with a ?uid outlet pipe 3 connected thereto. The usual drilling derrick 4 is 65 circular plate 24 positioned at right angles to
disk 23. Plate 24, is ?rmly aiiixed to an axial
mounted over the well and the usual hollow
shaft 25 mounted in bearings 26, plate 24 and
drilling string 5 extends through a rotary table 6
shaft 25 being rotatable togetherin bearings 26
into the well and is provided with a bit ‘I at its
by the frictional drive imparted thereto from
lower end and a water swivel 8 at its upper end. 1
The drilling string is operatively suspended in 70 disk 23. The free end of shaft 25 is drivingly
connected to the contact arm 21 of a conven
the well from a traveling block 9 which is swung
tional potentiometer 28 to cause the arm 21 to
from the usual crown block I0 by means of cables
II. Drilling ?uid is circulated from the usual
rotate upon a circular resistor 29 (Fig. 3)_ which
mud pit I2 by the usual mud pump I3 through a
is connected in a conventional circuit with a bat
pipe I4 to the swivel 8, whence the drilling ?uid 75 tery 30. The contact‘ arm 21 and‘resistor 29 are
ance with one embodiment of this invention.
‘v- un-ruvvnnllvl uh
I l-Vl “Eu
‘41-: in “.11 |
2,404,132
5
connected by conductors 3|—-32 to a conven
tional recording potentiometer 33a which oper
6
limited section of the chart for tracing the pas
sage of successive volumes of the drilling ?uid
through the well, irrespective of any variations
in these volumes due to changes in depth of the
ates the pen 2| in the conventional manner for
electrical recorders, as is well understood by those
skilled in the art of these devices. The pen 2| 5 well.
is thus made responsive to the movement of
It will be obvious that any suitable or conven
?uid as measured by counter I0, to trace on the
tional form of variable gear ratio may be sub
moving chart l6 a plurality of graphs G, G1, G2,
etc. (Fig. 4), each representing the passage
stituted for the elementary form including disk
23 and plate 24 described above.
through the well of a volume of ?uid equal to the 10
It will also be understood that where chart
volumetric capacity of the well or of annular
space S.
The arrangement of disk 23 on plate 24 con
stitutes a variable gear ratio connecting shafts
space is not a factor, apparatus for mechanically
changing the value of the scale units over which
pen 2| moves is not necessary and the graphs G,
G1, etc. may have di?erent lengths correspond
22 and 25, whereby the ratio of the speed of shaft 15 ing to the particular volumes they represent, it
22 to that of shaft 25 may be varied by varying
being only necessary to provide more or less con
the radial position of the point of contact of disk
ventional means in the recorder mechanism for
23 with plate 24 relative to the center of the lat
“homing” the pen after each volume of ?uid,
ter. Thus if shaft 22 makes one revolution for
corresponding to a particular depth, has flowed
each unit accumulated in counter l9, and it is
from the well. It will also be understood that
desired to make plate 24 and shaft 25 rotate once
various conventional recording mechanisms may
for a selected number of units accumulated in
be employed for operating the pen, either in a
counter l9, this may be readily accomplished by
series of strokes all beginning at one side of the
selecting a suitable point of contact on plate 24
chart or passing back and forth across the chart
for disk 23. For this purpose, disk 23 is mov 25 with the passage of consecutive volumes of the
able longitudinally along splined shaft 22 by
?uid, all without departing from the principles
means of an arm 33 which is provided with a
or the spirit of this invention.
pointer 34 which travels along a scale 35 cali
The complete apparatus above described is em
brated in units of volumetric capacity of the
ployed in the following manner:
well. Arm 33 travels along a bracket 36 and is 30
For the purposes of this description, counter
provided with a latch 31 for looking it to the
I9 will be employed, it being understood that me
bracket in order to fix the position of disk 23
ter I8 or any other suitable ?uid metering device
on plate 24 in accordance with the gear ratio
may be readily substituted therefor, if desired,
required as determined in terms of the units of
without altering the principles of the new meth
scale 35.
The units of scale 35 are preferably,
though not necessarily, the same as those accum
od. We will assume, for purposes of illustration,
that the drill is at a depth of 3000 feet, although
ulated in counter l9.
it will be evident that the method can be ‘em
In using this portion of the apparatus, we may
ployed from start to ?nish of the drilling of the
assume for purposes of illustration, that the vol
well or for any section thereof as may be desired.
umetric capacity of annular space S is 500 units 40 Since the depth is known, as are the diameters
of volume. These units may be barrels, gallons,
of the well and of the outside and inside of the
cubic feet, pump cycles, or any other suitable
drilling string 5, the volumetric capacity of the
unit. It is desired that the pen 2| make only
well and of the annular space S can be readily
a single trace across the chart I6 during the pas
determined for any depth, either by computation
sage of a volume of ?uid equal to the volumetric 45 or by experimental methods well understood in
capacity of the annular space S and then return
the art. From these determinations, it can read
to its initial position. The pointer 34 is set at
ily be computed how many units must be recorded
the ?gure 500 on scale 35, it having been pre
on counter l9 to represent the passage through
viously determined that‘ at that setting every v the well of a volume of ?uid equal to the volu
time 500 units is accumulated in counter I9; the 50 metric capacity of the well, or of annular space
corresponding number of rotations of disk 23 will
S. For convenience, the latter ?gure is ordi
cause plate 24 to make one complete revolution
narily employed, since it is usually desired to
and this in turn will operate potentiometers 28
trace the movements of increments of the drill-,
and 33a to drive pen 2| across a chart a distance
ing ?uid from the drilling zone at the bottom of
representing the volumetric capacity of annular 55 the well to the top of the well. The total well
space S. Completion of a rotation of arm 21 on
capacity can also be employed for this purpose
resistor 29 will operate in the conventional man
by applying to each reading a correction factor
ner to reset pen 2| in its initial position. As the
corresponding to the volumetric capacity of the
volumetric capacity of space S increases with
hollow drilling string for that depth. Mecha
increasing depth of the well, the position of disk 60 nism 20 is then adjusted so that it will cause
23 on plate 24 is reset in accordance with the cor
pen 2| to move once across the chart while that
respondingly increased number of units required
number of units is recorded on counter l9 which
to equal this increased capacity. But shaft 25
vrepresents the passage through, the well of a
will still make only one revolution despite the
volume of ?uid equal to the volumetric capacity
increased number of revolutions required of disk 65 of annular space S for a depth of 3000 feet. The
23. As a result, the width of the scale, that is,
well is ?lled with ?uid and drilling is begun at
the transverse distance over which pen 2| will
the same time that circulation of the drilling ‘
be driven will remain ?xed, the effect of the
?uid is started. At the same time, pen 2| will
change in the ratio between the speeds of shafts
be started on the chart H5 at a point along the
22 and 25 being only to change the value of the 70 depth scale of the chart opposite the ?gure 3000
volume units composing the scale‘ on which the
and will make its initial impression in (Fig. 4)
graphs G, G1, etc. are plotted. As a result, the
at that point. This initial impression to will rep
initial and terminal points of each of the graphs
resent the position of an increment of the drill
will fall on two parallel lines marking the bor
ing ?uid at the bottom of the well, namely, at a
ders of the scale and thereby permit the use of a 75 depth of 3000 feet. Now as the drilling and cir
IIVVIII
2,404,132
culation of the drilling ?uid continue, pen 2|
will be actuated by counter I9 operating through
the mechanism 20 to move across chart IS in
accordance with the displacement of the incre
ment of the drilling ?uid upwardly. from the bot
to which that test refers. For example, suppose
it is desired to ?nd the true depth to which a
test 02 refers, which is taken on the emerging
?uid when the depth of the well is 3135 feet.
This test falls on chart l6 between two of the
graphs Gs and G7 and no graph appears on
the chart by which the true depth can be directly
located. However, the true depth can be located
from the chart by drawing a horizontal line cor
tom of the well through the annular space S
and the changing position of the pen will con
tinuously indicate the changing position of the
increment relative to the bottom of the well by
drawing the graph G. When counter l9 has re
responding to the depth of 3135 feet opposite
corded the passage of the pre-determined num
ber of units, the increment will be emerging from
of intersection with G7 a line is drawn vertically
02 until it strikes the graph G7. From the point
until it intersects the graph G6, whence a hori
the top of the well and pen 2| will make a ?nal
zontal line is drawn to intersect the depth axis,
impression g on the chart indicating that point,
and by the “homing” action of the mechanism 15 giving the true depth of about 3122 feet as the
depth of the well when the tested ?uid left the,
20, the penis then caused to swing back to the
bottom. By means of the chart, produced by the
opposite side of the chart and initiate a new
apparatus of this invention, the emerging ?uid
graph G1 tracing the movement of a succeeding
can be tested at any time and the test referred
volume of ?uid through the well. However, dur
ing the time required for the increment to move 20 directly to the true depth which it represents.
It will be obvious that, as the volumetric capac
from the bottom to the top of the well, the drill
ity of the well and of space S increases with in
bit ‘I will have progressed some distance below
creasing depth, graphs G, ‘G1, etc., will normally
the original 3000 foot depth by a variable dis
lengthen correspondingly. However, by the pro
tance depending upon the relative hardness of
the formations, the rate of drilling, etc. Chart 25 vision of a scale changing device such as mech
anism 20, the graphs will all be con?ned within a
IE will have moved longitudinally a correspond
strip on the chart of ?xed width, irrespective of
ing distance, as a result of which the right hand
the changes in volume and without affecting the
end of the graph G will appear on the chart op
accuracy of the record.
By logging wells in the manner described, vari
say 3020 feet. A test taken of the increment of 30
ous logging tests may be plotted on the same chart
the ?uid emerging from the well and recorded
and all the various characteristics of the forma
on the chart at that time will, therefore, appear
posite some depth ?gure greater than 3000 feet, ~
tions penetrated by the drill, as determined for
at the greater depth. However since the graph
logging purposes, will appear directly on the chart
G now connects the initial and ?nal points a:
and y, it is only necessary to follow the graph 35 in properly correlated relationship. For example,
referring to Fig. 4, the drilling rate is continuously
back from y to a: to determine the true depth to
traced in a graph D along side the depth index.
which the test taken at y actually refers.
Since this graph is ordinarily obtained from the
Fig. 4 illustrates a, portion of a chart, made in
mechanical reactions of the drill as it progresses
accordance with this invention, bearing a plu
rality of successive graphs G, G1, G2, G3, etc., 40 through the earth strata, its values will appear
directly opposite the true depths to which these
representing the passage of a plurality of suc
these values refer. Traces O and H, which repre
cessive increments of the drilling ?uid from the
sent the values of oil and gas, respectively, in the
bottom to the top of the well. The initial points
of each of these graphs appear opposite a depth
emerging drilling ?uid, will appear, as shown, op
posite the depths at which the tested increments
?gure which represents the depth of the well at
of the drilling ?uid emerge, but as previously de
the time each of the increments started from
scribed, by means of the graphs G, G1 G2, etc.
the bottom of the well, while the opposite ends
These values can be directly correlated with the
of each graph appear at some greater depth. Of
true depths and with the corresponding values of
course, since the graphs represent consecutive .
volumes of ?uid, the end of one graph will co 50 the drilling rates, at each of these depths, and
incide with the beginning of the next succeeding
the drilling rates, therefore, become of special
value as an additional check of the oil and gas
graph relative to a depth position recorded on
strata, since these are normally softer than other
the depth scale. That depth will be the depth
adjacent strata and are generally clearly evi
at which the preceding increment emerges from
denced in the drilling rate graph. The traces of
the well as a new increment represented by the
the “Drilling Rate” and of “Oil” and “Gas” may
second graph begins its passage up the well from
be placed on the record in any suitable manner.
that depth. Records of the tests made for oil
It is ordinarily not necessary to continuously
and gas on the emerging increments of the drill
change the scale representing the volumetric ca
ing ?uid comprise the traces O and H, respec
tively, drawn on the chart in parallel columns 60 pacity as the depth changes, although this may
be done if desired. Usually, the scale is changed
adjacent the terminal ends of the graphs G, G1,
at some suitable interval of increasing depth,
etc., since these tests are necessarily made on
the‘ emerging increments. Thus, in order to ?nd
such as at every 20 feet or every 50 feet, or at any
the true depth of an all show which appeared,
other suitable interval, depending upon the depth
for example, at O1 opposite a depth of 3072 feet,
of the well. For example, if a well is drilling at
3000 feet, an increase in depth of as much as 30
which is the depth at which graph G3 terminates,
feet will produce a change in volumetric capacity
it is only necessary to follow this graph back to
the point of its initiation to ?nd that the incre
of the well of only one percent, and since the ?uid
ment tested for oil at 01 left the bottom of the
circulates at high rates, often as much as several
well at 3045 feet.
704 hundred barrels per foot drilled, the resulting
With an apparatus of logging in accordance
error in correlating the tests of the outgoing ?uid
with this invention, it is not necessary that the
with the true depth will ordinarily be only a small
test of the emerging drilling ?uid fall exactly
fraction of one percent, which is a very high
opposite the terminus of one of the graphs G,
degree of accuracy.
G1, etc., in order to determine the actual depth 75
From the foregoing it will be evident that this
2,404,132
invention provides apparatus by which a complete
and accurate log may be made continuously dur
10
limiting means operatively associated with said
marking means and responsive to the passage of
ing the rotary drilling of a well.
a pre-determined volw?’e of said ?uid through
What I claim and desire to secure by Letters
said measuring means to correspondingly limit
Patent is:
5 the total distance moved by said marking means
1. An apparatus for logging the strata of a well
relative to said recording means, said drive con
while being drilled by the employment of a hol
nection including means for varying the drive
low rotary drill string and a ?uid circulated down
ratio between said measuring means and said
said string and up outside thereof to the surface,
marking means in proportion to changes in said
comprising, the combination with means cooper
pre-determined volumes.
ating with the drill string for measuring the depth 19
6. In combination with rotary well drilling
of a stratum being drilled, of means cooperating
apparatus including a hollow rotary drill string
with the depth measuring means for measuring
and means for circulating drilling ?uid through
the rise of’a selected increment of the ?uid from
the well, depth recording means driven by said
said stratum.
15 drill string to move in synchronism with the
2. An apparatus for logging the strata of a well
progressive downward movement of said drill
while being drilled by the employment of a hollow
string, means for measuring the vol
of drill
rotary drill string and a ?uid circulated down said
ing ?uid ?owing through said well, marking
string and up outside thereof to the surface, com
means operatively associated with said recording
prising, the combination with chart means driven 20 means and responsive to the ?ow of ?uid through
by said drill string to move in synchronism with
said measuring means to successively plot on said
the progressive downward movement thereof
recording means relative to the changing depth
through said strata, of means for measuring the
of the well the records of the passage of suc
volume of said ?uid ?owing through the well, and
cessive pre-determined volumes of said ?uid
marking means cooperating with said measuring
through said well.
25
means for tracing on the moving chart the rec
7. In combination with rotary well drilling
ords of the rise’ of selected increments of said
apparatus including a hollow rotary drill string
?uidfrom each of said strata to the surface.
and means for circulating drilling ?uid through
3. In combination with rotary well drilling ap
the well, depth recording means driven by said
paratus including a hollow rotary drill string and
drill string to move in synchronism with the
means for circulating drilling ?uid through the 30 progressive downward movement of said drill
well, depth recording means driven \by said drill
string, means for measuring the volume of drill
string to move in synchronism with the progres
ing ?uid ?owing through said well, marking
sive downward movement of said drill string,
means having a variable ratio drive connection
means for measuring the vol me of/drilling ?uid
with said measuring means and responsive to
?owing through the well, mar ing means oper
the ?ow of ?uid through said measuring means
atively associated with said recording means and
to successively plot on said recording means
responsive to the ?ow of the drilling ?uid through
relative to the changing depth of the well the
said measuring means to plot on said recording.
records of the passage of successive pre-deter
means the record of the passage of said ?uid
mined volumes of said ?uid through the well,
through the well relative to the changing depth
and limiting means operatively associated with
thereof,
said marking means and responsive to the pas
4. In combination with rotary well drilling ap
sage of each of said pre-determined vol es of
paratus including a hollow rotary drill string and
said ?uid through said measuring
cans, to
means for circulating drilling ?uid through the 45 limit in proportion to each of said pre-deter
well, depth recording means driven by said drill
mined volumes the distance moved by said
string to move in synchronism with the progres
marking means relative to said recording means,
sive downward movement of said drill string,
said limiting means including means for vary
means for measuring the vol
of drilling ?uid
ing the drive ratio of said drive connection be
?owing through the well, marki g means oper 50 tween said measuring means and said marking
atively associated with said recording means and
means in proportion to changes in said pre-de
responsive to the ?ow of the drilling ?uid through
termined volumes, to thereby uniformly limit
said measuring means to plot on said recording
said distance moved by said marking means for
means the record of the passage of said ?uid
all of said volumes.
through the well relative to the changing depth 55
8. In combination with a, well being drilled
thereof, and limiting means operatively associ
by the employment of a hollow rotary drill string
ated with said marking means and responsive to
and a ?uid circulated down said string and up
the passage of a pre-determined volume of said
outside thereof to the surface, apparatus for
?uid through said measuring means to corre
plotting the passage of increments of said ?uid
spondingly limit the total distance moved by said 60 through said well relative to the changing depth
marking means relative to said recording means.
of the well, comprising, a chart driven by said
5. In ‘combination with rotary well drilling
drill string to move in one direction in synchro
apparatus including a hollow rotary drill string
nism with the progressive downward move—
and means for circulating drilling ?uid through
ment of said drill string, said chart bearing a
the well, depth recording means driven by said 65 scale of depth measurement extending in said
drill string to move in synchronism with the
direction, means for circulating said ?uid
progressive downward movement of said drill
through the ell, measuring means for measur
string, means for measuring the volume of drill
ing the volux?l of ?uid passing through the
ing ?uid ?owing through the well, marking
well, marking eans responsive to the ?ow of
means having a variable ratio drive connection 70 the ?uid through said measuring means to move
with said measuring means and respo sive to
across said chart generally transversely rela
the ?ow of the drilling ?uid through sai \meas
tive to the direction of movement of said chart
uring means to plot on said recording means the
from a point along said depth scale correspond
record of the passage of said ?uid through the
ing to the bottom of the well, drive means oper
well relative to the changing depth thereof, and 75 atively connecting said measuring means to said
2,404,182
11
12
marking means and including means for termi
nating the transverse movement of said marking
means upon passage through the well of a prede
termined volume of the ?uid required to displace
an increment thereof from the bottom of the well
and up outside thereof to the surface, apparatus
for plotting the passage of increments of said
?uid through the well relative to the changing
depth of the well, comprising, a chart driven by
-
to the surface, and for then initiating a new
transverse movement for the next succeeding
increment.
9. In combination with a well being drilled
by the employment of a hollow
rotary drill
string and a ?uid circulated down said string
and up outside thereof to the surface, apparatus
for plotting the passage of increments of said
?uid through the well relative to the changing
depth of the well, comprising, a chart‘ driven by 15
-
said drill string to move in one direction in syn
chronism with the progressive downward move
ment of said drill string, said chart bearing a
scale of depth measurement extending in said
direction, means for circulating said ?uid
through the well, measuring means for measur
ing the volume of ?uid passing through said
well, marking means responsive to the ?ow of
said ?uid through said measuring means to draw
a series of lines across said chart in a direction
generally transverse relative to the direction of .
~ said drill string to move in one direction in
movement of said chart and initiated‘from a
synchronism with the progressive downward
movement of said drill string, said chart bearing
plurality of points along said depth scale, each
a scale of depth measurement extending in said
direction, means for circulating said ?uid
through the well, measuring means for measur
ing the volume of ?uid passing through said
Well, marking means responsive to the ?ow of
said ?uid through said measuring means to draw
a series of lines across said chart in a direction
generally transverse relative to the direction of
movement of said chart and initiated from a
plurality of points along said depth scale, each
of said lines tracing the passage of a'pre-de
termined volume of said ?uid required to ‘dis
place an increment of the ?uid to the surface
from the depth represented by the point of
initiation of that particular line, drive means
connecting said measuring means to said mark
ing means and operative to cause the latter to
of said lines tracing the passage of a pre-de-v
vtermined volume" of said ?uid required to dis
place an increment of the ?uid to the surface
from the depth represented by the point of
initiation of that particular line, drive means
connecting said measuring means to said mark
ing means and operative to cause the latter to
initiate each of said ‘lines at a point along said
depth scale corresponding to the end of the next
succeeding line, said drive means including a
variable gear ratio means for varying the drive
ratio between said measuring means and said
marking means in proportion to the change in
volume of said well due to the change in depth
thereof.
11. Apparatus for measuring and recording
vnlume's' of well-drilling ?uid circulating down a"
drill string and upwardly outside thereof, com;
initiate each of said lines at a point along said
prising, a ?uid flow meter, a recorder having co
depth scale corresponding‘to the end of the next
operating elements one of which is synchronized
succeeding line.
with the drill string, and a variable gear ratio for
driving the other element of said recorder from
10. In combination with a well being drilled
by the employment of 3 a hollow rotary drill 40. the ?ow meter.
string and a ?uid circulated down said string
JOHN T. HAYWARD.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 101 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа