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Патент USA US3058324

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Oct' 15, 1962
_3,058,311
` H. J. wooLsLAYER ETAL
FLOATING OIL WELL DRILLING EQUIPMENT
Filed April 8, 1958
New
2' Sheets-Sheet 1
f.
FCS
3.05am
Patented Oct. 16, 1962
2
3,653,311
FLÜATENG @EL WELL DRILLENS EQUXPMENT
Homer J. Wooisiayer, Qecii Jenkins, and Charles D.
Iddings, Tulsa, Okla., and George l. Lynch, New York,
NSY., assignors to Lee SC. Moore Corporation, Pitts
hurgh, Pa., a corporation of Pennsyivania
Fiied Apr. S, 19%, Ser. No. 727,212
4 Ciairns. (til. (i1-ließ)
This invention relates to the drilling of offshore oil
wells, and more particularly to the transportation of oil
well drilling equipment by barge to a stationary marine
platform.
In one type of offshore cil well drilling, a platform is
constructed in ñxed position above the water and then the
drilling rig is iioated out to it on one or more tenders or
barges, from which the rig must be transferred to the plat
form. The substructure or base usually is moved onto the
platform first and fastened securely in position. Then a
reclining drilling mast is ñoated up to the base, attached
to it and swung up to upright position. That is often a
diñicult operation because the mast may not be at the best
level or late-ral position for connection to the base, and
also because the barge may pitch and roll while the con
nection is being attempted. This not only makes the job
diñìcult, but some of the equipment is likely to be dam
aged in the process.
It is among the objects of this invention to provide float
ing oil well drilling equipment which permits transfer of a
drilling mast to a marine. platform without much diíi‘i
culty, which permits the height of the reclining mast above
the barge carrying it to be adjusted as desired, which per
mits the barge to roll and pitch without damaging the mast,
and which facilitates connection of the mast to the base.
The invention is illustrated in the accompanying draw
ings; in which
considerable distance in front of the other frames. The
frames in each pair are spaced far enough apart to receive
between them a reclining drilling mast 11 that has its foot
end projecting a considerable distance beyond the end of
the barge toward the base 1. Also disposed between the
frames are cross »beams 12, as shown in FIG. 2, o-n which
the mast'rests. Each beam is suspended by ñexible means
between the adjacent frames. Although the flexible means
may be in the form of pivoted links connecting the op
posite ends of the beam with the tops of the frames, it is
preferred to use a pair of cables 13. The cables are at
tached to the opposite ends of the beams and extend up
over sheaves 14 in the upper ends of the two frames and
then down to winches 15 mounted on the barge at the base
of the frames.
While the barge is being towed to a well drilling site, the
cross beams 12 are held rigidly in place by suitable braces
(not shown) removably connected to them. When the
barge reaches the place where it is to be unloaded, the
braces are removed so that the cross beams can hang freely
between the frames as shown. The elevation at which the
mast will be carried out to the platform will depend upon
how rough the water may be and on how much equip
ment it is desired to carry on the barge beneath the re
clining mast. Usually the platform will extend farther
above the water than the barge does, so the mast may have
to be raised by reeling in cables 13 on the Winches 15 to
elevate the mast-supporting beams.
The mast can be
raised high enough in this way to permit it to- project over
30 the front end of the base when the barge is moved in close
to the. platform and anchored.
The foot of the mast is then pivotally connected to the
base so that the mast can be swung up to upright drilling
position. While the mast is being connected to- the base,
the barge may roll, but that will not interfere materially
with the operation because the ñexible connections between
FIG. 1 is a side View of our equipment showing an oil
the mast and barge frames 9 and 10 allow the barge to roll
well drilling mast about to be transferred from a bargel to
without unduly disturbing the mast. After the mast has
a marine platform;
been connected to the base, the drilling line 17 from the
40
FIG. 2 is an enlarged vertical section taken on the line
crown block 18 is passed over the top of the gin pole and
II-II of FIG. 1 ;
down to the drawworks, where it is secured to the drum.
FIG. 3 is a further enlarged fragmentary side view of
A sling 19, connected to the hook of the traveling block
the equipment, with the mast in Working position;
201, is carried back through the gin pole and then Aup and
45 over sheaves 221 in its top and forward again to the mast,
of FIG. 3;
where it is secured. The drawworks then can raise the
FIG. 5 is a view similar to FIG. l of a modification;
mast by reeling in the drilling line to cause the traveling
FIG. 4 is a horizontal section taken on the line IV-IV
FIG. 6 is an enlarged, fragmentary horizontal section
block to pull on the sling in a well known manner. When
taken on the line VI-VI of FIG. 5;
the mast is erect, it is fastened to the gin pole and the sling
FIG. 7 is a fragmentary vertical section taken on the
is removed.
y
'
50
line VII-_VII of FIG. 6; and
To help in securing the foot of the reclining mast to the
FIG. 8 is a fragmentary vertical section through the
base, the latter is provided with a pair of arms 20 _in front
central part of the mast base in FIG. l, looking forward
toward the mast and showing both mast~receiving shoes.
Referring to FIG. 1 of the drawings, a marine platform
of the front shoes. Each arm has in its lower _end por:
tion a longitudinal slot 21 that most suitably is _formed by
making the lower half of the arm Vfrom a round bar bent
is erected in any suitable manner over a body of water, the
into U shape. The slotted portion of the arm extends
platform may consist _of a base 1 for an oil well drilling
down into a rearwardly tapered slot 22 in the base, where
mast mounted on piles 2. This base may be constructed
it is held by a pivot pin 23` extending through both slots,
in place on the piles, or it may be built on land and then
Consequently, the arm can be swung forward and back
ñoated out and either skidded onto the piles or lifted onto
ward, it can slide up and down on the pivot pin and it can
60
them by means of a crane. The base has pairs of laterally
swing laterally to some extent because the front portion of
spaced front and back shoes. Mounted in the back shoes
the base slot is somewhat wider than the arm, These
3 and in the back part of the front shoes 4 are the lower
ends of the back and front legs of an upwardly tapered gin
pole S. Also mounted on the base is the usual draw
works 6.
Securely anchored a short distance in front of the plat
form is a tender or barge 8, which extends forward away
from the platform. A pair of laterally spaced upright
movements `of the arms permit them to be moved about
and into positions where they can be connected to the two
feet of the mast, which may not be perfectly aligned with
the front shoe or which may be moving about because of
the movements of the floating barge.
To connect the arms to the mast, their upper ends are
provided with transverse openings and the mast has bifur
frames 9 are rigidly mounted on the end of the barge near~ 70 cated feet also provided with transverse openings. The
est the platform, while another pair of similar frames 1t)
upper ends of the arms are swung into the feet, and hollow
are mounted on the barge at its opposite end, or at least a
pins 25 are then inserted into the registering openings to
3,058,311
3
4
pivotally connect the mast and arms together, as shown in
dotted lines in FIG. 3. Then, as the mast is pulled toward
the gin pole by means of the drawworks, the arms are
swung backward by the mast and their upper ends are
forced by the tapered base slots 22 to move back into the
bifurcated front shoes and to carry the feet of the mast
with them. As soon as the hollow pins line up with the
front holes in the shoes, solid pivot pins 26 are inserted in
the shoes and the hollow pins to pivotally anchor the mast
to the shoes. It can then be swung into upright position,
near its front end, a gin pole mounted on the base behind
the shoes, an upwardly extending arm disposed in front of
each shoe and having a transverse opening through its up
as indicated in full lines in FIG. 3, by reeling the drilling
line onto the drawworks.
In the modiiìcation shown in FIGS. 5, 6 and 7, no pro
vision is made for raising and lowering the reclining mast
30 on the barge 31, but it is supported high enough above
the barge for any marine platform to which it is expected
to connect. The mast is supported by frames 32 and 33
mounted on the opposite ends of the barge. The upper
ends of the trames have cross rollers 34 journaled on them
beneath the lower legs of the reclining mast. These per
mit the mast to be moved easily back and forth on its sup
ports. To permit lateral movement of the reclining mast
on the barge in order to facilitate connecting the mast to
a stationary platform, rollers 3-5' are secured lengthwise
of the lower legs of the mast. These longitudinal rollers 25
per end, the lower portion of each arm being provided
with a longitudinally extending transverse slot, said base
being provided with slots extending lengthwise of the base
and loosely receiving the lower ends of the arms, a pivot
member extending across each base slot and through the
longitudinal slot in the arm in that baseY slot to permit the
arm to move lengthwise, each'base slot being long and
Wide enough to permit the arm to swing backward and lat
erally, a barge ñoating in front of the base and extending
lengthwise away from it, a reclining mast supported length
wise on the barge and having feet projecting therefrom
toward said arms, the feet having transverse openings
therethrough, and hollow pins extending through the open
ings in said feet and upper ends of said arms to pivotally
connect them together, the arms being of a length that
will guide the feet yback to the shoes when the mast is
moved toward the base to align said hollow pins with the
shoe openings, whereby pivot pins can be inserted in said
aligned shoe openings and hollow pins to pivot the mast
to the shoes so that it can be swung upward.
are located a short distance below the mast and rest on
3. Marine oil well drilling equipment according to
claim 2, in which said base slots are tapered toward the
shoes to align the upper ends of said arms with the shoes
the cross rollers, whereby the mast can move on rollers ei
as the arms are moving toward them.
4. Marine oil Well drilling equipment, comprising a sta
tionary base supported above the surface of a body of
as described in the first embodiment ofthe invention. The 30 water, a pair of laterally spaced shoes provided with
aligned openings therethrough and mounted on the base
mast is also swung up from the barge in the same way.
near its front end, a gin pole mounted on the base behind
According to the provisions of the patent statutes, we
the shoes, an upwardly extending arm disposed in front of
have explained the principle of our invention and have il
each shoe and having a transverse opening through its
lustrated and described what We now consider to repre
sent its best embodiment. However, we desire to have it 35 upper end, means loosely pivoting the lower ends of the
arms to the base on an axis substantially parallel to the
understood that, within the scope of the appended claims,
axis of said shoe openings to permit the arms to swing
the invention may be practiced otherwise than as specifical
back-ward and laterally, the arms being movable length
ly illustrated and described.
ther lengthwise or crosswise of the barge.
The foot of the
mast may be connected to a platform in the same manner
wise thereof on said pivoting means, a barge floating in
We claim:
1. Marine oil well drilling equipment, comprising a sta 40 front of the base and extending lengthwise away from it,
a reclining mast supported lengthwise on the barge and
tionary base supported above the surface of a. body of
having feet projecting therefrom toward said arms, the
water, a pair of laterally spaced shoes provided with
mast feet having aligned transverse openings therethrough
aligned openings therethrough and mounted on the base
near its front end, a gin pole mounted on the base behind 45 adjacent the upper ends of the arms, and removable pivot
pins in said arm openings connecting the arms to the mast,
the shoes, an upwardly extending arm disposed in front
the arms being located in positions to guide the feet back
of each shoe and having a transverse opening through its
to the shoes when the mast is moved toward the base to
upper end, means loosely pivoting the lower ends of the
arms to the base on an axis substantially parallel to the
align said feet openings with the shoe openings, whereby
pins can be inserted in said aligned feet and shoe openings
axis of said shoe openings to permit the arms to swing
to pivotally connect the mast to the shoes so that it can
backward and laterally, the arms being movable length
be swung upward.
wise thereof on said pivoting means, a barge iìoating in
front of the base and extending lengthwise away from it,
References Cited in the lile of this patent
a reclining mast supported lengthwise on the barge and
having feet projecting therefrom toward said arms, the feet 55
UNITED STATES PATENTS
having aligned transverse openings therethrough, and hol
low pins extending through the openings in said feet and
1,123,851
Cooper ________________ __ Ian. 5, 1915
1,335,497
1,758,606
1,863,953
2,052,301
Hamilton ____________ __ Mar. 30,
Jacobs ______________ __ May 13,
Wilband ____________ __ lune 21,
Johansen _____________ __ Aug. 25,
2,325,993V
1920
1930
1932
1936
Zoll __________________ __ Aug. 3, 1943
2,372,390
Petersen ____________ __ Mar. 27, 1945
2. Marine oil Well drilling equipment, comprising a sta
tionary base supported above the surface of a body of
water, a pair of laterally spaced shoes provided with
2,475,933
2,531,770
Woolslayer ___________ __ July 12, 1949
Ducharme ______ ______ Nov. 28, 1950
2,539,695
2,602,636
Moon ______________ __ Ian. 30, 1951
Travers _______________ __ July 8, 1952
2,934,905
Woolslayer ____________ __ May 3, 1960
aligned openings therethrough and mounted on the base
2,959,015
Beck „___ ___________ __ Nov. 8, 1960
upper ends of said arms and pivotally connecting them to
gether, the arms being located in positions to guide the
feet back to the shoes when the mast is moved toward the 60
base to align said hollow pins with the shoe openings,
whereby pivot pins can be inserted in said aligned shoe
openings and hollow pins to pivot the mast to the shoes
so that it can lbe swung upward.
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