US1942597A - Anchoring means for well casings - Google Patents

Description

, 1934- I J. M. HEWGLEY 1,942,597

- ANCHORING' MEANS FOR WELL CASINGS Filed July 7. 1930 Patented Jan. 9, 1934 UNITED STATES PATENT orie ANCHORING MEANS FOR WELL CASINGS James Hewgley, Oklahoma City, Okla.

Application July 7, 1930. Serial No. 465,870

' 4 Claims. (01. 16615) My invention relates to means for anchoring the production casing in oil or gas wells.

' The objects of my invention are to provide a device of this class which is new, novel, practical 5 and of utility; which will eliminate the labor of making one or more pipe connections now necessary; which will save time and expense; which will be comparatively cheap in manufacture; which will be strong and durable; which will provide a positive means of insuring the constant control of an oil or gas well; which will eliminate one fitting now generally used which is subject to being frequently destroyed by the pressure of the flowing oil or gas; and, which will be emcient in accomplishing all thepurposes for which it is intended. i

In the drilling of oil and gas wells at present it is imperative that the well be cased, and wells of any great depth are usually cased with two or more sizes of casing. The outside or surface casing, which is the largest casing used,- is seated at its upper end upon some substantial foundation such as cement or the like. When the next smaller casing is installed, it is connected to the surface casing at its upper end. The last or smallest string or casing installed and the string through which the well eventually produces is seated upon the next largest casing and supported thereby. This last mentioned casing is usually provided with a master gate valve upon its upper end and with a nipple above the master gate valve. This nipple in turn is connected to a second master gate valve at its upper end and the second master gate valve receives a second against upward movement which may be caused by the pressure of the flowing oil or gasand it has become a common practice to provide a strap clamp around the upper or second nipple and to attach this clamp by tum-buckle rods to the foundation of the surface casing or to the surface casing direct. This arrangement has proven somewhat unsatisfactory due to the fact that the nipple between the two gate valves frequently is cut out by the extraneous matter such as sand and the like carried by the flowing fluid and must necessarily be replaced at frequent intervals. The object in providing two gate valves upon the production casing is to insure positive 59 control of the well at all times, onebeing used in case the other is'damaged by the sand'in the flowing oil. At the present time it is a diflicult matter to replacethe first nipple due to the fact that the anchoring clamp upon the upper 5 nipple must be removed in order to remove the nipple. The production casing must be heldupper valve and the worn first nipple. When this is done, the production casing is provided with no means of preventing its being forced upwardly by the oil and gas-pressure. Many wells are permitted to run wild and cause considerable 60 damage'to the immediate property and to the property in the close vicinity of the well. This, flowing gasand oil at times becomes ignited and consequently entirely ruins the oil drilling derrick as well as presenting an extremely great flre '65 hazard'to the community. I

My; invention is designed to eliminate both of the above described nipples. and at the same time permit'the changing of the .upper valve when necessary without releasing the production casing to being forced upward by the. force of the oil or gas.

With these and other objects in view as will more'fully appear, my invention consists in the construction, novel features; and combination of parts hereinafter more fully described, pointed out in the claims hereto appended, and illustrated in the accompanying one-sheet drawing, of which:

Figure 1 is an elevational view of the upper portion of the casing of a well showing the installation of the two master gate valves in the manner used when my device is provided;

Fig. 2 is a top view of the device; and,

Fig. 3 is a' sectional view of the device taken along the line 3-3 of Fig. 2.

Like characters of reference designate like parts in all the figures.

It is understood that various changes in the form, proportion, size, shape, weight and other details of construction, within the scope of my invention may be'resorted to without departing from the spirit or broad principle of my invention and without sacrificing any of the advantages thereof; and it is also understood that the drawing is to be interpreted as being illustrative and not restrictive.

One practical embodiment of the invention as illustrated in the-drawing follows:

The muneral 1 represents any usual or desired has a central cylindrical portion 7 to which is integrally attached in an outstanding manner a pair of oppositely disposed arms 8, the oumr ends of which are each upturned slightly as shown at 9. Said cylindrical portion 7 is provided with a central bore 10'- which is of a diameter equal to the inside diameter of said casing d, and around said bore 10 is provided with transverse periora= tions 11 which are designed to register with perforations in theilange of said valve for recei ing stud bolts for rigidly anchoring said casting 6 upon the upper end of said valve 5. Surrcund ing said bore and upon bore in the top and hot tom faces of said casting 6 is provided annular grooves 12 which are adapted to receive a usual s ing ring for hermetically sealing with the flange of said valve 5, and the flange of a usual master gate valve 13. Stud bolts 1% pass through the lower flange of said valve l3, through the perforations 11 in said casting 6 and through perforations in the upper flange of said casting 5. Usual turn-buckle rods 15 are provided over said arms 8 and extend downward to said base 1 where they are attached in any usual manner to hooks or projections'upon said base 1.

' It may be seen that by using applicants casting member 6 a positive means is provided for, it

at all times anchoring said casing 4 and said valve 5 against any upward movement. It may also be seen that said valve 13 may be replaced at will without removing the casting 5 or in any manner releasing casing 4 to upward movement.

Obviously, the invention is susceptible of embodiment forms other than that which is illus= trated in the accompanying drawing and described herein, and applicable for uses and purposes other than as detailed, and I therefore consider as my own all such modifications and adap tations and other uses of the tom of the device herein described as fairly fall within the scope of my invention.

ing a continuation of both valves, means carried by each of said flat surfaces for receiving a sealring ring, and outstanding arms carried by said member for co-acting with turn-buckle rods for holding said casing and the first mentioned val e against upward movement.

2. A device for the purposes described, em= bodying an annular member having a central bore and having a fiat upper and lower surface surrounding said bore, said member adapted to be attached to the upper end of a master gate valve upon a well casing and beneath the lower end of a second master gate valve thereabove for forming a continuation of both valves, means carried by each of said fiat surfaces for receiving a sealing ring, outstanding arms carried by i said member for co-actixig with turnebucirl'e rods for holding said casing and the, first mentioned valve against upward movement, and means carried by said arms for attaching said turn-buckles thereto.

3. An anchoring means'ior flow lines comprising a fiat centrally bored plate having outstanding arms, said piate adapted to be positioned rigidly between members of a flow line, its arms co-acting with longitudinally adjustable rods for holding the line against inadvertent longitudinal movement.

4. An anchoring means for flow lines compris ing a flat centrally bored plate adapted to be positioned rigidly between members or a flow line, and diametrically opposed arms outstanding from the plate for coacting with longitudinally adjustable members for holding the line against inadvertent longitudinal movement.

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