US1442404A

US1442404A - Casing head for oil wells

Info

Publication number: US1442404A
Application number: US438429A
Authority: US
Inventors: Haubert Leo
Original assignee: JOHN A WOLFE; JOHN C BENNETT
Current assignee: JOHN A WOLFE; JOHN C BENNETT
Priority date: 1921-01-19
Filing date: 1921-01-19
Publication date: 1923-01-16
Anticipated expiration: 1940-01-16

Description

16, ma l.. HA U B E R T. j u

CASING HEAD FOR OIL WELLS.

FILED JAN.19.1921. 2 SHEETS-SHEET s.

WITNESSES L. HAUBERT. CAS-ING HEAD FOR OIL WELLS.

man 11111.19. 1921.

Jan, 16,? 1923.

WITNESSES Patented dan, 1d, 1923.,

entran stares 1,442,4@4 PATENT LEO HAUBER'JI,` OF IBEGGS, OKLAHOMA, ASSIGNOR 0F ONE-THIRD TO JOE-IN C.

BENNETT AND ONE-THIRD TO JOHN A. WOLFE, BOTH F TULSA, OKLAHOMA.

casina Haan non oirJ WELLS.

Application filed January 19, 19.21. Serial No. 438,429.

To all whom t 'may concern Be it known that I, LEO HAUBERT, a citizen of the United States, residing at Begofs, in the county of Dkmulgee and State of klahoma, have invented new and useful lmprovementsin Casing Heads forv Oil llvells, of which the following .is a specification.

This invention has reference to casing heads for oil wells, and its object is to provide a casing head adapted to various sizes' of tubing and provided with a top which may be readily taken oit when the 'first joint of the tubing is applied, and whereby oil, which may flow out from the tubing when unscrewed will find its way back into the well or may be diverted intoa suitable reservoir to prevent waste.

ln accordance with the invention, the Ecasing head has 'a bore of upwardly flaring contour, to receive spider devices seating 1n the casing head and serving to sustain the weight of the tubing.

In conjunctionl with the casing head, and well tubin there 'is provided a device through w ich the tubing extends and which s designed to divert fluid which may be discharged from a joint of tubing when unscrewed from the tubing below it, thus protecting workmen from the outtlowing fluid and causing suchv fluid to flow ,back into the well or into .a suitable reservoir.

The invention will be from a consideration' of the following detailed description taken in connection with the accompanying drawings forming part of this speciiication, with the understanding, however, that the invention is not conined to any strict' conformity with the showing in the drawings, but may be changed and modified so long as such changes and modiications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure 1` is an elevation of a casing head v'constructed in accordance with the invention, and showing some parts in section.

Figure 2 is a vertical' diametric section through the structure shown in Figure 1.

Figure 3 is a plan of the structure shown in Figure 2, but omitting the casing head top.

Figure 4 is a view similar to Figure 2,

with a shallow groove 8.

but showing some parts removed and fluid delector in place.

Figure 5 is a plan view of the deflector. Figure 6 is a view similar to Figure 2, but showing the casing head top in place and a coupling of the tubing resting thereon. Figure 7 is a plan view of the structure shown in Figure 6, but with the casing top omitted.

Figure S is a plan view of a spider simthe -ilar to that shown in Figure 2.

. 2, to receive a casing head 3, comprising a ring 4 threaded to screw onto the upper end of the casing. From the ring 4, there rises a flaring khead 5, in the upper end of which there is produced an annular groove 6, with a basic or flare portion 7, provided The groove 6 contains a packing ring 9 on which is seated a casing head top or cover 10, held in place Aby set screws 11 extending through the best understood outer edge of the casing head, whereby the cover may be securely fastened in place, or may be loosened for removal.

Where the ring l screws onto the casing 1, it isprovided with an inwardly directed flange 12, forming a ledge designed to supi port certain structures. Seated on the ledge 12 is a spider 13, provided with a hub 14 and

radial arms

15 and 16, the latter terminating in oppositely directed lugs 17 conforming in flare to the inner wall of the flaring head or extension. The lugs 17 are traversed by set screws 18, by means or' which the spider is firmly held in position.

The hubr 14 is shown as traversed by a well tube 19 rising throughl the spider 13 and through the casing .head top 10, with the tubing supported by any appropriate device, indicated in dotted lines at 20. Tapped through the sides of the casing head are pipes 21, whereby gas or the like may be conveyed from the casing head to some point of disposal. There is another by bolts 18a'. The spider 22 has a basic plate 2 6 ofa size to rest upon the ledge 12 with interposed packing 27,l shown in F igure 6, whereby fluid discharged'from a removedtubing section is caught in the re; ceptacle formedY by the spider 22 and the flaring walls of the casing head. By forming the bottom 26 of the spider 22 separately from the -bodyof the spider, and secur ing it in place by screws 28, a. gasket orA washer 29 is secured in place in the lower end-of the hub 24,`so that the tubin 19 may be readily passed throught-.he gas et with the latter hugging the tubing and at the same time permitting the usual tubing couplings 30 to pass through the gasket. By this arrangement, iuids may be caught in the casing head and conducted by way 'of pipes 21 to some point of disposal, instead of permitting the iiuids to flow back into the-well or to waste.

The spider22,l shown in Fig. 11, is a slightly modified form of -the spider 22, wherein the bottom 26a is made integral with the hub 24C which is provided with a shoulder 24h against which the gasket .29 is secured.

The pipes 31 permit gas to be taken from the well to be used for fuel to furnish power while pullingthe tubing and the gasket4 or washer 29 in the lower end of the hub 24 is to hold the gas in the well while the tubing is being pulled and the gas Ataken from the well through the pipes 3&1, as stated. Sometimes oil will commence4 to liow through the casing 1, while the tubing is being pulled, in which case the oil will go through the pipes 31 of the casing head to a storage tank inrately in Fig. 5.

stead of overflowing the derrick, as heretofore, and being wasted as well as being dangerous'on account of catching fire from an adjacent boiler furnace, as sometimes occurs.

When the tubing is pulled, and a section is unscrewed from the next lower one, workmen are often deluged by the escaping oil or other liquid, and in order to prevent this there is provided a deflector 32 shown sepa- The deiector comprises two members hinged togetherl at' one side and furnished with handles 33 by means of which the two members of the' deflector may rbe spread open or closed together 'and when spread open are suliiciently separated to permit application sidewise to the tubing 19. To facilitate the application of the deflector,

- a spring 34 is lodged between the handlesl 33 and a layer of'felt 35 or some other similar material is applied about that portion of the deflector which grips the tubing.

ina-2,404

turned flange 37, so that when the pipe ortubing section is unscrewed and the )oil drops, the tendency will be to divert the oil toward the interior of the casing head so lthat it will gravitate into the well.

The. deflector shown in the' drawing forms thegsubject matter of a separate application filed by me January 19, 1921, Serial No. 438,430.

1. A casing head comprising a ring adapted tobe 'secured to the upper end of a well casing and provided with a Haring', rising extension, a closure for the larger end of the extension, ducts leading from said extension, and a spider having the ends of its arms seated on the flaring extensions of the ring.

2. A. casing head comprising a ring adapted to be secured to the upper end of a well casing and provided with a flaring, rising extension, a closure for the larger end of the extension, ducts leading from said eX- tension, and a spider adapted to seat in the said extension and having a hub to be trav- L ersed by the well tubing.

3. A casing head comprising a ring adapted to be secured to the upper end of a well 'casing and provided with a fiaring, rising terminating in lugs for attachment to the inner wall ofthe extension.

V4f. A casing head for oil or gas Vwells, comprising a ring adapted to be secured to the upper end of the well casing and provided with a Haring, rising extension having a seat at its upper end with a groove or recess thereabout, a casing head top adapted to the seat and provided with a'passage for the well tubing, and means for fastening the casinghead top to the casing head within the groove or seat.

5. A casing head comprising a ring adapted to be secured to the upper end of a well casing and provided with a flaring, rising extension, a spider adapted to seat in the l flaring casing head and provided with a hub to be traversed by thewell tubing, ducts leading from the upward extension of the casing head, a basic plate forming the bottom of the upward extension of the casing head above the ring, and a spider tov which `the basic plate is secured and provided with means for in turn securing said spiderto the casing head.

6. A casing head comprising a ring adaptedito be secured to the upper and of a well casing andprovided with a flaring, rising extension, a spider adapted to seat in the Lasagne f flaring casing head` a'nd provided with a hub to be traversed by the Well tubing,- ducts leading from the upward extension of the casing head, a basic plate forming the bottom of the upward extension of ,the casing head above the ring, and a spider `to which the basic plate is secured and provided with means for in turn securing said spider to the casing head, saidcasing head'also being provided with a casing head top covering the casing head and provided with means for securing it nplace.

7. A casing head, comprising a ring adapted to be secured-,to the upper end of a Well ture.,

LE() HUBERT.