US1498075A - Self-packing tubing ring - Google Patents

Description

June 17 I924. 1,498,075

1 c. E. DALE SELF PACKING TUBING RING Filed Feb. 17 1923 V v T z 4 f Z Mi I] V attozmq Patented June 1 7, 1924.

UNITED STATES PATENT OFFICE.

CHARLES E. DALE, 0F BARNSDALL, OKLAHOMA, ASSIGNOR OF ONE-HALF TO ROBERT D. ROOD, OF BARTLESVILLE, OKLAHOMA.

SELF-PACKING TUBING RING.

Application filed February 17, 1923. Serial No. 619,777.

To all whom it may concern:

Be it known that 1, CHARLES a citizen of the United States, residing at Barnsdall, in the county of Osage and State of Oklahoma, have invented certain new and useful Improvements in Self-Packing Tubing Rings, of which the following is a specification, reference being had to the accom-' panying drawings.-

This invention relates to tubing rings, and more particularly to a self packing tubing rlng.

An important object of the invention is to provide a tubing ring forming a packing gland, the packing of which is compressed by the weight of the tubing to form a seal not only between the ring and the tubing but between the ring and the casing head upon which the ring is supported.

A further object of the invention is to provide a device of this character which is extremely simple in its construction, which may be readily applied and which is a general improvement in the art.

These and other objects I attain by the construction and arrangement shown in the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein like reference characters designate like parts throughout.

In the drawings Figure 1 is a vertical sectional view taken through a casing head showing a tubing ring constructed in accordance with my invention applied thereto; and

Figure 2 is a fragmentary plan view thereof.

Referring 'now more particularly to the drawings, the numeral 10 designates a casing head which is, as well known to those familiar with the art, a device usually in the form of a unitary casting having interior threads 11 for engagement with the casing 12 of a well and having outlets 13 from which the oil and gas from the well may be withdrawn. Such casing heads are usually provided with a ring 14 having an aperture 15 through which the tubing 16, of the'well extends.

In accordance with my invention, I provide a base ring 17 ada ted to be seated upon the ring 14 of the casing having a bore 18 of a size closely approximating the external diame er of he tu ing ith hi h the ring E. DALE,

ward movement of 17 is to be employed. In its lower face the ring 17 is provided with an annular groove 19 adapted for the reception of-a piece of ring packing 20. The upper end of the bore 18 of the ring is enlarged, as at 21, formingan upwardly directed shoulder 22 forming a seat for an annular packing ring 23.

A slip ring 24 is provided having a downwardly tapering bore 25, the lower end of which is of a diameter substantially the same as the internal diameter of the bore 18 of the ring '17. The lower face of the slip ring 24 is provided with a downwardly extending flange 26, the external diameter of which is such that it has a sliding fit within the enlargement 21 of the bore 18. The lower face of this flange slopes upwardly and inwardly, as indicated at 27.

The device hereinbefore set forth is not employed until all of the tubing sections with the exception of the last tubing section have been positioned in the casing. The last tubing section is inserted through the rings 24 and 17 in the order named, the packing rings 27' and 20 being in position. The rings are moved into position against the casing head and when the tubing section has been lowered through the rings the desired distance, slips 28 are inserted at the upper end of the ring 24 and about the tubing section 16 subsequently to which the tubing is again lowered. This lowering causes the slips 28 to firmly engage with the tubing and to move, downwardly therewith with the result that the ring 24 is passed downwardly until it engages the ring 17. This downward movement of the ring 24 brings the inclined lower face 27 of the flange 26 thereof into engagement with the packing, .compressing the packing and at the same time forcing the same inwardly against the outer face of the tubing to seal the space between the rings 17 and 24 and the tubing. The downthe ring 24 having reached its limit, the entire weight of the tubingis supported upon the ring 17 with the result that the packing ring 20 is crushed against the top 14 of the casing tubing for sealing the tubing with relation to the casing head. It will'furthermore be obvious that the construction thereof as hereinbefore set forth is capable of some 1 change and modificationwithout materially departing from the spirit of my invention and I accordingly do not limit myself to v such specific structure except as hereinafter the shoulder, a gasket between the casing head ring and shoulder and means upon the casing head for clamping the ring upon the gasket, the casing head ring having an opening of the same size as the tubing associated therewith, of a tubing ring comprising a base ring adapted to be seated upon the casing head .ring about the tubing hole thereof and having in its lower face a packing groove adapted for the reception of a packing ring the opening of the base ring being of the same diameter as the tubing with which it is to ooact, and a slip ring adapted for engagement with the base ring and to engage a tubing by means of slips or the like to support the same, and a packing element interposed between the base ring and slip ring and compressed upon the application of pressure to the slip ring to be thereby moved inwardly for engagement with the upper walls of a tubing and to seal the joint between the base and slip rings.

2. The combination with the usual open ended casing head the opening of which is shouldered, a casing head ring seated upon the shoulder, a gasket between the casing head ring and shoulder and means upon the casing head for clamping the ring upon the gasket, the casing head ring having an opening of the same size as the tubing associated therewith, of a tubing ring comprising a base ring adapted to be seated upon the eas- I ing head ring about the tubing hole thereof and having in its lower face a packing groove adapted for the reception of a packing ring, said base ring being provided with a vertical bore of the same diameter as the tubing with which it is to ooact, said bore being enlarged at its upper end to form an upwardly directed shoulder, and a slip ring adapted for engagement with thebase ring and having a flange entering the enlarged bore, packing seated upon said shoulder and against which the lower end of the flange abuts, and means carried by the slip ring engagin the tubing to support the same.

3. e combination with the usual open seated upon said shoulder and against which ended casing head the opening of which is shouldered, a casing head ring seated upon the shoulder,-a gasket between the casing head ring and shoulder and means upon the casing head for clamping the ring upon the gasket, the casing head ring having an opening of the same size as the tubing associated therewith, of a tubing ring comprising a base ring adapted to be seated upon the casing head ring about the tubing hole thereof and having in its lower face a packing groove adapted for the reception of a packing ring, said base ring being provided with a vertical bore of the same diameter as the tubing with which it is to coact, said bore being enlarged at its upper end to form an upwardly directed shoulder, a slip ring adapted for engagement with the base rin and having aflange entering the enlarged bore, packing seated upon said 8 shoulder and against which the lower end of the flange abuts, and means carried .by the slip ring engaging the tubing to support the same, the lower end of said flange inclining inwardly and upwardly from the outer edge 8 thereof. I

4. The combination with the usual open ended casing head the opening of which is shouldered, a casing head ring seated upon the shoulder, a gasket between the casing head 9 ring and shoulder and means upon the casing head for clamping the ring upon the gasket, the casing head ring having an opening of the same size as the tubing associated therewith, of a tubing ring comprising a base ring adapted to be seated upon the casing head ring about the tubing hole thereof and having in its lower face a packing groove adapted for the reception of a packing ring, said base ring being provided with a vertical bore of the same diameter as the tubing with which it is to ooact, said bore being enlarged at its upper end to form an upwardly directed shoulder, a slip ring adapted for engagement with the base ring and having a flange entering the enlarged bore, packing the lower end of the flange abuts, and means carried by the slip ring engaging the tubing to support the same, the lower end of said flange inclining inwardly and upwardly from the outer edge thereof, the bore of said base rin and the lower end of said slip ring being 0 a diameter substantially equal to the diameter of the tubing with which the tubing ring is to coaot.

In testimony whereof I hereunto aflix my signature.

CHARLES E. DALE.

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