US1217853A - Combination casing-head and spider. - Google Patents

Description

w. B. WIGLE.

l TION CASING HEAD AND S PIDER.

Patented Feb. 27, 1917.

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. WILSON B. WIG-LE, OF FULLERTON, CALIFORNIA.

COMBINATION CASING-HEAD AND SPIDER.

Specification of Letters Patent.

Patented Feb. 27, 1917.

Application filed May 13, 1916. Serial No. 97,276.

v To all whom it may concern:

Be it-known that I, WILSON B. VVIGLE, a citizen of the Dominion of Canada, residing at Fullerton, in the county of Orange, f

State of California, have invented new and useful Improvements in Combination Casing-Heads and Spiders, of which the following is a specification.

This invention relates to an apparatus for use in connection with well work, and is designed particularly for use in oil wells.

The objects of this invention are, first, to provide a combination casing head and spider for use on the upper end of any well casing and means therefor for packing the head to prevent gas blow-outs or leaks of any kind ornature which consists of specially constructed rings to fit the peculiar construction of spider, together with inserted packing, expanded by the weight of tubing or: casing making a positive leakproof joint; second, to provide a combination casing head and spider construction such that slips may be substituted for the packing means whereby the pump tubing is engaged and held during the operation of placing. tubing or casing in or removing the same from a well, thereby saving time and expense in the handling of the production from any well yielding fluid of any kind or nature;-and third, to provide a device of the character described above having various details of-structure whereby simplicity of construction and ease of manipulation are secured.

I have illustrated an embodiment of my invention in the accompanying drawing, in which:

Figure 1 is a longitudinal section through a casing head, spider and supporting tubing.

Fig. 2 is a. longitudinal section through a casing head with slips in position support ing pump tubing.

Fig. 3 is an enlarged section of a casing head. I r

Fig. 4 is a plan view of the casing shown in Fig. 3.

Referring more particularly to Figs. 1, 3 and 4, 5 indicates my improved casing head which is substantially cylindricalin form, and is provided at its lower end withthreads 6 which are adapted to be secured to a well casing. The head is provided with a longibore.

of frusto-conical form converging inwardly.

The smaller diameter of the counter-bore is of less diameter than the bore.7. Nipples l0 and 11 are formed 1 pon the head at substantially diametrically opposite points,

.and are provided with threaded bores 12 and 13 adapted to receive over-flow pipes.

Mounted within the counter-bore 8 is an anchoring ring formed of sect ons 14 and 15. The ring is divided horizontally, the two sections thereof forming the frustum of a coneconforming in shape to' the counter- Interposed between the sections 14 and 15 is a. packing-l6 of ring form. The tubing 17 has mounted thereon coupling 18, thereby forming a. shoulder. 'The anchoring ring isbored to receive tubing 17 with the collar 18 overhanging the edges of the bore abutting and placing the weight of the tubing upon the upper section of the spider, thereby supporting the tubing from the casing head and expanding the packing 16 to form a tight non-leak joint between the tubing and the casing head.

It is obvious that the construction just described is easily assembled and disassembled. The casing head permits the tubing casing or pipe to be, passed through the spider Without removing-the casing head.

In placing the tubing in position the ring section 15 and the packing 16 are placed in the counter-bore .8. The ring section 14: is

then placed in posit-ion and'the tubing al-- stituted in the head therefor. The slips 20 have an outer face conforming to the shape of the counter-bore and are provided on the inner face with upwardly extending teeth or serrations 21, so that as the tubing is lowered they engage the tubing and wedge the slips 20 inwardly against the tubing gripping the latter and securely holding 1t 1n position. No additional anchoring means is required. After the tubing has been adjusted and changes and repairs therein made, the tubing may be raised, thereby releasing the slips from their gripping action,

and permitting removal of the same. The

casing head ring may then be inserted in position as before described, and the tubing lowered so that the collar rests upon the upper ring section which rests on the packing between the lower and upper ring making a tight leak-proof joint.

What I claim is:

The combination of a. casing head, provided at its upper end with a counter-bore said counter-bore converging downwardly, and a tube anchoring member having a bore for tubing engaged with and supporting the latter, said tube anchorin member having an outer wall complementary in shape to said counter-bore, divided transversely to form a plurality of sections, provided with packing interposed between said sections and held in engagement with said head by the weight of the tubing.

In Witness that I claim the foregoing I 20 WILSON B. "WIGLE.

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