US718464A - Sand-screen for wells. - Google Patents

Description

' 8, 4, PATBNTED JAN. 13,-19p's. .s. JACKSON &'N. THOMPSON. r

N0 MODEL.-

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STOKELY JACKSON AND NEALS THOMPSON, OF ELCAMPO, TEXAS.

SAN D-SCREEN FOR WELLS.

SPECIFICATION formingpart of Letters Patent No. 718,464, dated January 13, 1903.

Application filed April 26, 1902.

To all whom, it may concern:

Be it-known that we, STOKELY JACKSON and NEALS THOMPSON, citizens of the United States, residing at Elcampo, in the county of Wharton and State of Texas, have invented a new and useful Sand-Screen for -Wells, of which the following is a specification.

The invention relates to a sand-screen for wells, and has for its object to provide a sim- 1O ple and efficient device adapted for use on ordinary well-tubing, the same being capable of construction and repair at small cost, being readily attachable to and removable from the tubing, and having means for effectually eX- I5 eluding sand from the inlet end of the tubing, while permitting the free inflow of water therethrough.

Further objects and advantages of this invention will appear in the following descripzo tion,and the novel features thereof will be particularly pointed out in the appended claims, it being understood that changes in the form, proportion, and the minor details of construction may be resorted to Without departing from the spirit or sacrificing any of the advantages of this invention.

In the drawings, Figure l is a view of a screen constructed in accordance with the invention applied in the operative position to a section of well-tubing. Fig. 2 is a central sectional View of the same alsoiapplied to the well-tubing, which is indicated in section. Fig. 3 is a transverse sectional view of the same.

Similar reference characters indicate cor-' responding parts in all the figures of the drawings.

In the illustrated embodiment of the invention the screen consists of a skeleton frame 0 comprising a series of spaced radially-disposed ribs l, flexibly connected by rings or bands 2, secured to the inner edges of the ribs or bars at suitable intervals, said rings or bands preferably being constructed as clamps, with their extremities turned out to form ears 3, secured together by fastening devices, such as bolts 4:. Thus in practice the rings or bands may be secured to the ribs by means of screws 5 or other fastening devices before applying the frame to the pipe-section 6, the clamping devices consisting of nuts being tightened to secure the bands firmly Serial No. 104,835. (No model.)

around the pipe-section, the lower end of the pipe-section being spaced from the disk or head 7, which-forms the bottom of the screen, and the upper portion thereof projecting, as shown in the drawings, sufficiently to provide for attachment to the adjoining pipe-section. Preferably the lower ends of the ribs or bars are mortised into the disk or head 7, the latter being notched in the planes of the ribs or bars, as shown at 8, and the latterbeing rabbeted or cut away at their lower ends, as shown at 9,'to interlock therewith. The upper ends of the ribs or bars and at their outer sides are'beveled to give the upper portion of the frame a tapered contour,whereby when the screen fabric 10 is applied to the frameit is securely held against downwarddisplacement, this screen'fabricbeing of any suitable material and being braced and held from inwarddefiection between the ribs or bars by the wire wrapping 11, also started at the top of the conical portion of the frame, to prevent downward displacement. The exterior contour of the frame, as above described, provides for securing the screen fabric and wrapping in place by nailing to the frame. Obviously any material may be used for the frame; but bars or ribs of wood are found sufficiently durable under ordinary circumstances, and the base may also be made of that material. An.upstanding stifiening flange or ring 12, against which the inner edges of the ribs or bars bear and within which may set-- tle any fine particles of solid matter which may find its way through the screen-wall, such solid matter thus being out of the path of the liquid in entering the tube, is arranged on the upper side of the base in alinement with the engaged section of tubing.

With a screen constructed as above described the soldering of the screen fabric ordinarily resorted to in the construction of devices of this kind may be dispensed with, and therefore the cost of construction is materially reduced, the durability is not reduced, and the facility with which repairs may be made is materially increased.

Having described the invention, what is claimed is w I l. A sand-screen for wells comprisingaplurality of flexibly connected ribs or bars,

means for detachably clamping the same in ill operative relation with a section of well-tubing, and screen fabric secured to the exterior edges of the ribs or bars.

2. A sand screen for wells comprising spaced ribs or bars, flexible clamping-bands connecting the same and provided with means for detachably securing them in engagement with the section of well-tubing, and a screen fabric secured to the edges of the ribs or bars.

3. A sand screen for wells havinga plurality of spaced ribs or bars connected at their inner edges by clam ping-bands fol-detachable engagement with a section of well-tubing and reduced at their upper ends to form an upwardly-tapered contour, and a screen fabric secured thereto and held from down ward displacement by said taper.

4. A sand-screen for wells having a frame tapered at its upper end and provided with means for engaging a section of well-tubing, wire wrapping arranged exteriorly on the frame, and screen fabric arranged exteriorly of said wrapping.

5. A sand-screen for wells having a bottom disk, spaced ribs or bars stepped on said disk, clamping-bands secured to the inner edges of the ribs or bars and adapted for engagement with a section of well-tubing, the u er ends of said bars being beveled at their outer edges to form an upwardly-tapered or conical contour, and screen fabric secured exteriorly to the ribs or bars.

6. A sand-screen for wells having a bottom disk, spaced ribs or bars let into the periphtion of well-tubing, and a screen fabric secured exteriorly to the ribs or bars.

7. A sand screen for wells comprising spaced ribs or bars beveled at their upper ends and forming an open frame approximately cylindrical throughout the body portion thereof, said frame having means for engaging a section of well-tubing, and screen fabric secured to the exterior of said bars.

8. A sand screen for wells comprising spaced ribs or bars, a plurality of flexible connecting means connecting the inner edges of said bars and clamping them to a well-tube section at various intervals throughout their length, means for supporting the lower ends of said bars and restraining them from downward movement, a screen fabric mounted upon and expanded by said bars, and means at the upper ends of said bars for supporting said screen fabric against downward movement.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of two witnesses.

STOKELY JACKSON. NEALS THOMPSON. Witnesses:

L. M. READ, (J. L. DAVIS.

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