US1514062A - Means for incasing wells - Google Patents

Description

Nova 4 3 Sheets-Sheet l Filed May 9, 1922 fay. 2.-

R. M. M LAlN MEANS FOR INCASING WELLS 3 Sheets-Sheet. 2

Filed May 9, 1922 fiaber M. 1% Zaire attozweq Y NOV. 4 I

R. M. M LAIN MEANS FOR INCASING WELLS Filed May 9, 1922 3 Sheets-Sheet 5 fi oberl [31. MCZcMm Patented Nov. 4, 1924.

UNITED STATES PATENT OFFICE.

ROBERT 1a. MCLAIN, or roar woarn, TEXAS, nssieivon or ONE-HALF TO EUGENE A. REILLY, or roar WORTH, TEXAS.

MEANS For. INCASING WELLS.

Application filed ma 9, 1922.

T0 ,aZZ whom it may concern:

Be it known that I, ROBERT 1V1. MGLAIN, a citizen of the United States, residing at Forth North, in the county of Tarrant and State of Texas, have invented certain new and useful Improvements in Means for Incasing Wells, of which the following is a specification.

This invention relates to improvements in means for incasing or lining wells, particularly oil wells.

The invention has for its object, primarily, to guard against or prevent the caving or breaking of the wall of the well, which resultant broken pieces of the well-wall would otherwise drop into or accumulate in the bottom of the well, all of which are obviated by the use of my invention.

A further object of the invention is to provide for carrying out the aforesaid pur pose in an extremely simple, inexpensive and effective manner.

Other objects of the invention, together with the foregoing, will be fully apparent from the following description and accompanying illustrations or drawings.

The invention consists, therefore, of certain instrumentalities and features of construction substantially as hereinafter more fully disclosed and pointed out in the claims.

Thedrawings disclose the preferred embodiment or one form of my invention wherein it will be understood that various changes and modifications as relate to the detailed construction and arrangement of parts may be made without departing from the spirit or scope of my invention as covered by the appended claims, and in which drawings:

Figure 1 is a mutilated side elevation and vertical sectional view of my invention, the casing being in its initial or une-Xpanded position. I

Fig. 2 is a similar view of the invention, the casing being in its expanded position as in positioning it for forming the lining.

Fig. 3 is a transverse section taken on the line 3 3 of Fig. 1.

Figs. 1 and 5 are a mutilated side eleva tion and a sectional elevation, respectively of the device.

Fig. 5 is a fragmentary View of a casing blank of modified form of securing the lateral or meeting edges or portions thereof together.

Serial No. 559,527.

Fig. 6' is a view of the'well-casing shown in the form of a helix. Fig. 7 is a section on line 7-7 of Fig. 4;. Fig. 8 is a section on line 88 of Fig. 5% Fig. 9 shows more particularly thew'ell casing in its expanded condition, within the we In carrying out my invention, I take a sheet of preferably spring-steel, designated generally as 1, and roll or coil the same upon a suitable mandrel, to impart to said steel sheet a tubular or cylindric form, which is to constitute a casing or lining for insertion into a well, especially for oil. Such lining or casing is adapted, by reason of its inherent or' characteristic lightness and resiliency, when wound or coiled, as indicated, in the well, to provide for effectively and practically automatically retaining the casing or lining in position therein. In disclosing more fully one way for practicing my invention, I provide the spring-steel plate with a plurality of perforations 2, a plurality of dogs or lugs 3 being pivoted to the tubular tool 4:, adapted to be received centrally within the wound or coiled memher 1, and whereby, upon such conjunction or engagement of said dogs or lugs with the perforations 2, the thus wound, coiled, or compressed casing or lining will preliminarily beretained in such compressed position or condition and allow said casing or lining to be brought within the limits of the interior of, and to be inserted into the well, as would be the case when the parts assume the position as indicated in Fig. 1, mor fully made apparent later. I

The pivot-connection between the lugs or dogs 3 and the too-l 4 is effected by means of pivot-forming pins 5, as clearly seen in Fig. 3, suitably headed and inserted through the lugs or dogs and the tool member. The lugs or dogs 2 are retained and sprung into the retracted position, as disclosed by Fig. 2, by springs 6 adapted to engage the inner ends of said dogs and the tool 4, as disclosed by Figs. 1 and 2, when the casing is in the position as indicated in Fig. 2, i. e., when the mandrel Or member 1 is to'be withdrawn, in which event the casing or lining 1 is in encased-position against the wall of the well, and the lugs or dogs 8 are released from the perforations 2 at their free ends. The mandrel 1, it will be seen, is adapted to extend when in the position as indicated in Fig. 1, as also when in the similar cap 8 and the cap 8 with a loop or bail 10, the cap 8 also being provided with a bail 11 for the attachment thereto, of a line or cable, for the like purpose as indicated in connection with the loop 10, the latter line or cable also not being in evidence. Suitable hook-like memhere 12 are secured at their upper ends to the collar 9, with their lower inwardly curved or hooked terminals adapted to have an outwardly springing action under the tripping or downwardly thrusting or depressing action of the tool 4:. The lower or hooked terminals of the members 12 are adapted to engage or hook under the lower edge of the gmember 9 carried by the lower portion of the members 9.

the tool 4, as seen in Fig. 1, the latter then being in its depressed position or resting upon the bottom of the well and the hooked members 12 being held in engagement with A wooden pin 14 is preferably inserted transversely through the tool 4 to hold the parts in position. The tool 4 has a lower spherical or stubbed terminal, as 4, to prevent it catching into the wall of the well. The device, with the hooked members thus positioned, is lowered into the well, and as the lower end of the tool strikes the well-bottom, it is forced upwardly, the pin 14 is sheared off and the lugs or dogs 3 are disengaged or released from the casing or lining, allowing the dogs or lugs to be withdrawn into the casing or lining and the spring hooks 12 are disengaged from the member 9 and allowed to spring outwardly. Simultaneously with the release of the lugs or dogs, the released resilient or springsteel casing or lining will, under recoil action thereof, be thrust with great force against the wall of the well and be there firmly retained by its expansive action. The mandrel is then capable of being drawn from the well by pulling on the tool manipulating line, and in so drawing the tool and mandrel from the well, the spring members 12 are forced outwardly against the casing or lining and force it into more effective engagement with the Walls of the well. The casing may be adapted to be positioned at any depth in the well by accordingly lengthening the required piping or pluralizing the pipesections. As for instance, when it is desired to. sink the casing, say twenty feet from the bottom of the well, twenty feet of what is termed anchor-pipe may be used, and when this strikes the bottom, it would trip the tool twenty feet up the well and provide for positioning the casing at that point. Or should it not be desirable to use the anchor, 22 line may be attached to the loop 10, Figs. 1 and 2, and the tool be tripped by pulling upon the line at any point along the well.

In the modification as disclosed by Fig. 5 are shown the ends of the casing bent or deflected to spring into engagement laterally with the wall of the well, as at 3.

Fig. 5 is a fragmentary view of a blank of the casing or lining with means for effecting connection between onelongitudial edge thereof and the opposite portion of the blank, comprising interlocking tabs 3 and perforations 5 Fig. 6 shows a modified form of the well casing member, in which the casing is wound after the fashion of a helix, as 6 It will be understood that various changes may be made than those disclosed herein in perfecting the details of the invention without departing from my invention and the spirit or scope of the claims as above set forth.

I claim and desire to secure by Letters Patent 1. In a well-incasing or lining device, the combination of a tubular .or cylindric instrumentality adapted to form the wellcasing or lining, and comprising a resilient springy-metal-member, a mandrel about which said springy-metal-member is adapted to be wound and means carried by'said mandrel for connection between the overlapping coiled portions of said tubular instrumentality, and means for releasing said coiled portions, whereby said instrumnetality will be adapted to expand and be applied to the wall of the well.

2. In a well-incasing or lining device, the combination of a tubular 0r cylindric instrumentality comprising a resilient springy-metal-member adapted to form the well-casing or lining, a tubular tool for arrangement within said instrumentality or casing, lugs pivotally connected to said tool and adapted to project through apertures in said instrumentality or casing, and means for retaining the lugs in operative position but movable for retracting said lugs into said instrumentality or casing to release the expansive action of the latter and forcibly thrust said casing into contact with the wall of the well.

3. In a well-incasing or lining device, the combination of a cylindric instrumentality comprising a resilient springy-metal-niember adapted to form the well-casing or lining, a mandrel about which said casing'is adapted to be wound, a tool having spring pressed lugs effecting connection between said mandrel and said well-casing or lining and adapted to project beyond said Well casing to retain said casing against temporary recoil action, said tool having longitudinal movement to provide lOr effecting the projecting of said lugs, also the retracting of said lugs into said casing in releasing the expansive action of said casing for forcibly thrusting the casing against the wall of the well as the tool is moved upwardly in releasing its action upon said lugs.

4:, In a well-incasing or lining device, the combination of a cylindric instrumentality adapted to form the well-casing or lining comprising a resilient springy metal-member, a mandrel about which the springymetal-member is adapted to be wound, a tool having spring-pressed lugs effecting connection between said mandrel and the well-casing and adapted to be projected through and beyond said well-casing and to be retracted into said well-casing by the vertical movement of said tool and resilient members carried by said mandrel under ten sion and adapted to be released and sprung outwardly to press the casing into more el'lective engagement with the walls of the well.

5. A well casing or lining formed o1 a tubular or cylindrical springy metal memher and means applied thereto for effecting frictional contact therebetween and the Wall of the well.

6. A well-casing or lining of tubular springy metal, means adapted to effect frictional contact with the wall of the well and of hooked and annular formation and an ranged to be applied to the lower or anchoring terminal of said casing.

E". In a well casing or lining device, the combination with a tubular lining, of a device adapted to support said lining, resilient members carried by said device in their compressed position, and means whereby when the lining or casing is released from said device, the spring members will be released and a lowed to spring outwardly to press the lining or casing against the side of the well.

8. In a well casing or lining device, a tubular casing, means to lower the easing into the well, and resilient means carried by said lowering means and adapted during withdrawal of said lowering means, to press the tubular easing into more effective engagement with the sides of the well.

In testimony whereof he allixes his signature.

ROBERT M. MoLAIN.

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