US1404350A - Well-capping device - Google Patents

Description

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E. H. DUCKETY. WELL CAPPING DEVICE. APPLICATION FILED MAY 2. 1921 MW g W d y 4 J E. H. DUCKETT.

WELL CAPPING DEVICE.

. APPLICATION FILED MAY 2 1921. 1,404,850. Pat nted Jan. 2 1, 1922.

3 SHEEYS SHEET 2' E. H. DUCKETT.

WELL CAPPING DEVICE.

AFPLICATION FILED MAY 2.1921.

1,404,350. Patented Jan. 24,1922.

3 SHEETS-SHEET 3.

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K ZZZ/4756?? citizen of the United States,

UNITED STATES PATENT OFFICE.

ELIGAH HENRY DUCKETT, OF PINE BLUFF, ARKANSAS, ASSIGNOR OF ONE-HALF '10 EDWIN BOYCE, OF PINE BLUFF,

ARKANSAS.

WELL-CAPPING DEVICE.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, ELIGAH H. DUoKE'1'r,a residing at Pine Bluff, in the county of Jefferson and State of Arkansas, have invented certain new and useful Improvements in Well-Cappmg De vices; and I do declare the followin to be a full, clear, and exact description 0 the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in devices for capping oil wells when oil-1s struck and forcible discharge thereof takes place.

One object of the invention a simple and'easily isto provide operated cut-ofi valve for the oil supply which may be assembled secured in place,

on the drilling or other pipe which projects above the well casing, in such manner as to be slid to the upper end of said pipe, tightly and then operated to cut ofl. In this connection, a further aim is to provide the valve with a normally expanded sectional ring which is screw threaded on its inner side for engagement with the usual screw threads on the pipe,- means being provided for contracting said ring around the pipe when the valve is properly positioned.

A further object of the invention is to provide a head for the well casing and means for tying the above mentioned valve to said head, whereby to not only prevent the loss of casing head gas, but to provide an additional anchoring means for the valve to prevent any possibility of this valve being blown from the pipe.

With the foregoing in view, the invention resides in the novel construction and association of parts hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawings.

Figure 1 is a vertical sectional view of my invention in operative position upon a well casing and the pipe therein.

Figures 2 and 3 are elevations, partly in section, looking in different directions.

Figures 4, 5 and 6 arehorizontal sectional views as indicated by lines 4-4, 55 and 66 of Fig. 1.

Figure 7 is a of the valve.

the flow of oil.

perspective view of the gate Figure 8 is a perspective view of one seetron of the contractible ring above referred to.

Figure 9 is a perspective view of one of the wedges which may be employed for securing t e casing head to the pipe.

In the drawings above briefly described, the numeral 1 designates a well casing while 2 has reference to a drilling or other pipe within and extending above said casing, the upper end of said pipe-2 being externally threaded as indicated at 3. An annular cas- 1ng head 4 surrounds the pipe 2 and is secured by an appropriate coupling 5 to the casing l and I prefer also to provide said casing head with toothed wedges 6 slidable 1n grooves 7 for gripping the pipe 2. The head is also by preference provided with a plurality of ra ial set-screws 8 to be threaded into engagement with the pipe 2 as shown clearly in Fig. 5. These set-screws are shown extending through an outstanding annular flange 9 with which the upper end of head 4 is provided, this flange serving to perform an additional function hereinafter set forth.

he entire head 4 is split longitudinally into halves so that it may be readily applied aroundthe pipe 2, and these halves are secured toge er by appropriate clamping bolts 10.

Patented Jan. 24, 1922.

Above the casing head 4, a valve casing 11 is provided, said casing two sections secured to so that it may be assemb ed around the pipe 2 in the same manner as said head 4. One section of the casing 11 is provided with a laterally extending guide 12 in which a sliding gate valve 13 is normally housed. This gate is provided with an o erating screw 14 having a s'wivelled connection therewith and a stem 15 leads from said screw through a stuffing box 16 in the outer so that the gate 13 may be tracted as desired. This gate is preferably wedge-shaped as clearly shown in Figs. 1 and 7 in order that it will tightly wedge in place when in closed position.

The valve casing 11, with the gate 13 retracted into the guide 12, is adapted to be applied to the pipe 2 in position to'be slid upwardly on said pipe to a position to perbeing formed of ether by bolts 11" projected and reend of the guide.

, Ito tightly clamp I, 23 are applied to anchor the valve casing11'to the casinghead 4. The stem 15 anchoring said casing in this last named or operative position, novel means are pro vided. Near its lower end, the casing 11 is formed with a circumferential internal roove 17 in which a sectional ring 18 is.con-.

lurality of radial set-screws 20 are provided,

5 these set-screws being threaded through an i pipe 2, the valve casing 11 is slid upwardly.v

screws 20 are operated to contract the ring appropriate outstandin flange 21 onthe lower end. of

1 the casing 1. .Other radial screws 22 preferably pass through flange.21 for engagement with the pipe 2 to' further anchor the valve casing. I

In order to provide further for anchoring the casing 11 against ossible blowing from the 'end of the pipe 2,

flange 21 of said casing and the flange 9 of said casing head 4, thereby effectively anchoring said valve casing to said casing.

I casing head and means for securing it to a head. i I 1. I By employing the construction shown, the casing head 4 and the valve casing 1 1' may be assembled aroundthe pipe 2 before oil' isstruck and said casing head may be securedto the casing 1 by the coupling 5. When the outrush of oil starts through the along the pipe :2 until it projects above the upper end of said pipe as seen in Fig. 1. The bolts 11 are then tightened, theset- 18 and engage its screw-threads with the threads-3, the set-screws22 are tightened,

the wedges 6 are driven downwardly to acpipe, said casingbeing adapted to be slid to the upper end. of the pipe when the well j discharges through said pipe, a valve adapted to close across said casing overlthe pi tive'. pos1tion,"the set-screws 8 are operated then be rotated to slowly close the valve 13 to arrest the discharge of oil until a pipe line can be tapped into the upper" end of the valve casingll and run to an reservoir. This having been done, the valve 13 maybe opened to permit the oil to discharge into the pipe line and reservoir so. that no loss. will occur. When one reservoir is filled and the pipe line must be connected with another, the valve 13 may of course be" closed during this operation. From thee forego ng, taken in connection .with the accompanying drawings, it will be seen that while my invention isof rather sim lo and inexpensive nature, it-will be hig ly efiicient and will'fulfill a long felt need in the art of well drilling. Since excellent results may be obtained from the details disclosed, they may be followed'if desired, but attention is here directed to the fact that the present disclosure is for illus-' trative purposes only and that within the provide a plu- A rality of tie-rods 23 which pass through the the pipe 2, and the tiemeans carrie adapted to be projected into engagement casing head and means for securing it to a well casing,'a valve casing adapted to surround a pipe extending from said well casing, said casing head and said valve casing having outstanding projections providedwith alined openings, tie rods passing through said alined openings for anchoring said valve casing to said casing head, and

a cut-off valve for said valve casing adapted to close over said pipe.

2; A well capping device 1 comprising a casing head and means for securing it to.

a well casing, a -flvalve casing adapted to surround a pipe extending from said well casing, means securing said valve casingto said casing head, a cutoff valve for said valve casing adapted to cloSe over said pipe, and means for clamping said casing head on said pipe. 4

3."A' well capping device comprising a well casing, a valve casing adapted to surwell casing, said valve casing having an internal circumferential groove, a sectional internally threaded ring in said'groove, 'set screws threaded through the valve casing round a threaded-pipe extending from said for projecting the ring sections from the over said pipe.

4. A well capping tdevice comprising .a

valve casing formed of sections and means for clamping them togetheraround a well and normally retracted screw. threa ed by the valve casing and with the usual screw threads of the pipe.

ce I '5. A well capping device comprising a H valve casing formed of sections and means for clamping them together around a-well pipe, said casing being adapted to he slid to the upper endof the pipe when the well discharges throughsaid pipe; a valve adapted to close across said casing over the pipe,

a normally expanded'sectional ring carried by said valve casing and internally thread-' ed, said casing vhaving aninternal groove receiving said ringfandset screws threaded through said casing for contracting said ring around'the aforesaid pipe and engaging 'the screw threads of said ring with those'of the pipe. v In testimony whereof I have hereunto set my hand. v

E'LI'GAH HENRY DUCKETT.

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