US1042425A - Means for setting well-strainers. - Google Patents

Description

INVENTOF ATTORNE y Wwf @Nw/M@ W Patented Oct. 29, glg.

g a S l erJ/ I R. M. GA'LBRAITBL MEANS POR SETTING WELL STRAINEES.

APPLICATION FILED JULY 16,1912.

. f l l VVTNESSES narran srarnsrarnnr herren.

ROBERT MILLER GALBRATH, GF PENE BLUFF, ARKANSAS, ASSIGNOE, OF ONE-HAL TO ADOLEHUS PIR/OTERO, GI? DRMOTT, ARKANSAS.

MEANS FOR SETTING iglLL-STRAKNERS.

` To all whom. @'25 may concern.'

Be it known that l, ROBERT M. GAL- BRAITH, a citizen ofA the United States, residing at Pine Bluiil, in the county of flotter- 5 son and State ot' Arkansas, have invented a new and useful Means for Setting YWell- Strainers, of which the following is a specilioation.

This invention has reference to improve ments in means for setting .vell 'strainers and is designed 'to provide a device whereby a strainer may be installed in a Weil easing Without disturbanceI of the latter.

It is customary in Wells et certain chai aeter's to sink the well casing to the water .hearin strata, and then to lift the casingV a short distance suilicicnt to provide for the insertion of the strainer, but the lifting of the Yeasing is etten a diliicult job because of the settling of earth and sand aboutthe casinef.

ln accordance with the present invention the Well casing is inserted to the desired entent and then the strainer is introduced into the Well casing to the bottoni thereof, and by means ot a Water jet a passage for the strainer is bored into the Water bearing sand and the strainer is lowered until its upper end is within the Well casing but for a short distance, and then by means ot a swage on the manipulating ineans for the strainer the upper end of the-strainer is expanded against the casing until in tight engagement therewith, thereby preventing the entrance of sand into the strainer Where joining the casing, While the lower end of the strainer is initially closed.

' The invention Will be best understood from a consideration ot' the toller-ving detailed description, taken in connection with the accompanying drawings terminiy a part or" this specification, with the further understanding that While the drawings illustrate a practical .torni of the invention, the latter is susceptible oi other practical embodinients, and, therefore is not confined to any strict conformity-with the showing` of the drawings, but niay be changed and modified so long' as such changes and niddiications niark no material departure troni the salient features of the invention.

`ln the draWings:-ligure 1 is a longitudinal dianietrie section of a casing and strainer withv the placing; means in eleva- 55 tion. nig. 2 is a longitudinal diainetric Specification of Ietters Patent.

application le July 16, 1,912.

to a larger scale.

Patented @ein $12. serial no. 'marea section ot the strainer placing means with the strainer and casing omitted except that a small portion of the lower closure for the strainer is shown in the ligure. liig. 3 is a section on the line 3-3 of Fig. 2 but dra-Wn Fig. 4f is a section on the line we of Fig. 2, but drawn to a larger scale. ig. 5 is a section on the line 5-5 of Fig. 2 but drawn to a larger scale.

Referring to the draw-ings, there is shown a well casing l, which is assumed to-be sunk to the proper depth. There is also shown a strain er 2, the shove/ing being to a large eXtent typical rather than illustrative of any particular structure, since the strainers may vary considerably in structure, and the showing of Fig. l is therefore to he taken as simply indicative of any appropriate form of strainer. That end of the strainer which in the installed strainer constitutes the lower end is' provided with a closure 3 and about the other or upper end of the.

strainer there is applied a band 4 oit some readily expansible material, such as lead.

Extending through the closure 3 is a nipple 5 secured `to the elosure ley nuts 6 or in any other suitable manner. The nipple 5 is provided With a threaded extension 7 to which is applied a hollow cap member 8 having the end remote from that applied to the nipple 5 reduced in diameter and formed with a valve seat 9 and a threaded socket 10, both in the longitudinal axis ot the cap member. The threaded extension 7 of the nipple 5 has an interior spider 11 through which there is extended a valve stein 12 carrying at one end a valve 13 adapted to the seat 9, and surrounding the valve stein is a spring 14. between the spider 11 and the valve 13 and tending at all times to main tain the valve against the seat 9. The valve 13 is provided with the usual axial guide ex-4 tension 15 of externally grooved forni, so that when the Valve is opened fluid may pass the seat.

Adapted to the threaded socket 10 one end of a pipe 16, the threads of both the pipe and the socket being left-handed threads. This pipe enters mother and larger pipe 17 through a packing gland 1S and the end of the pipe 16 remotevfroni the threaded end is expanded into a head 19 ot a size to tit snugly, yet freely Within-the pipe 17, which latter is provided on its interior With a longitudinal spline 20, while llt) the head. 19 has a corresponding longitudinal groove 21.y lThis structure permits the pipe 16 to move lengthwise oft' the pipe 17 or the said pipe 17 to niove lengthwise of the pipe 16, as the ease may be, but any turning movement of the pipe 17 is participated in by the pipe 1G because et the spline connection between the two pipes. T he pipe 17 lis in the particular construct-ion shown ol considerably less length than the strainer 2 and is connected by a plain, straight coupling 22 to another length ot pipe Q3, and the latter is connected a plain, straight coupling 211 to still another' pipe Q5, and the latter is assumed to be of a length to extend to the top of the well and may be of an appropriate nuinber of sections for the purpose. Surrounding the pipe between the couplings or collars 22 and Q11- is a truste-conical annular swage block Q6 with the smaller end presented toward the coupling or collar Q2 and the larger end toward the coupling or collar Q1. This swage block is made to fit t'reely pn the pipe 23, so to n'love lengthwise thereot2 without material impediment. l

Assuming that the casing 1 has been sunk to the desired extent, the strainer 2 attached to the nipple 5 and the other parts connected together as shown in the drawings are lowered into the casing until the nipple 5 reaches the lower end'ot the casing, which is further assumed to be at the water bearing sand stratum. Now water is forced through the pipe 25 into the pipe 23 and from thence into the pipe 17, where it finds its way through lthe head 19 into the pipe 16, the bore ot' the pipe 16 being continued through said head. and the torce of the water displaces the valve y13, so that the water under pressure flows into the cap 8 and thence into the nipple 5 and out through the latter into the sand stratum. The water jet thus produced bores its way into the sand, so that the strainer 2 may follow until the upper end of the strainer is close to the lower end ot the casing, when. the lowering ot the strainer may cease. Even though the pipe 17 be under these conditions withdrawn from the pipe 16 until furthernovement is arrested by the engagement ot the head 19 with the packing gland 18, the swage block 26 will be in gravital engagement with the lead ring Ll. It, new, the pipe 25 with the pipes 23 and 17 be allowed to drop by their own weight, or be forced downwardly along the pipe 16, the collar or coupling Qfl will be brought into forcible engagement with the larger'hnd then upper end ot the swage block, and the latter because of its taper iorln will engage and expand the ring 4. into forcible contact with the casing. The operation ot lifting the pipe 25 and permitting itto tall, or forcing it downward may be repeated a suitable number ot times until the ring has been expanded by swaging tightly against the inner wall oit the casing 1, so that the strainer is not only sustained by such engagement, but the entrance oit sand in the casing at the upper end ot the strainer prevented A tter the operation just de scribed has been completed, the pipe 25 with the parts carried thereby may be litted until the collar Q2 disengages the swage block from contact with the expanded upper portion ot the strainer, and then by turning the pipe 25 in a right handed direction, the pipe 16 readily unsererwed troni the capy 8, all the other screw connections oit the device beingI by righthand threads. VVhen this is accomplished the whole device with the exception ot the nipple 5 and cap S with the valve 13 therein, is removed from the well, the ral ve structure carried by the nipple 5 remaining permanently in the well and serving to close the lower end et the strainer against the entrance of sand, the spring 14, which may be a light spring.l being sutliciently strong to hold the valve in the closed position.

lVhat is claimed is 1. A means for setting well strainers comprising a carrying ineens tor the strainer having a telescopic section, a swage block on said carrying Ineans in position to engage the'upper end ot the strainer when in place to expand it against a. well casing, and lmeans on. the strainer carrying ineans for engaging the swage block to torce it into Contact with the strainer.

2, A means for setting well strainers in well casings with the strainer provided with a check valve at the lower end and an eX- pansible collar at the upper end, comprising a pipe section having left hand threads at one end adapted to screw into the check valve structure, the other end of the pipe being formed into a laterally expanded head, another pipe receiving the .first named pipe in telescoping relation thereto, the second named pipe and the head of: the first named pipe having a spline and groove connection for constraining the two pipes to rotate together, a third pipe connected to the second pipe and having collars atI both ends, and a taper bloclt on and slidable along the third pipe between the collars to be en gaged by the latter, said taper block being shaped. to expand the expansible collar at the upper end ont the well strainer .into engagement with the interior of the well casing.

8. A means :tor attaching well strainers to the lower ends oit' installed well easings, comprising a tubular carrier 'tor the strainer provided with a chock valve attached to the lower end of the strainer with the tuiinlar support in readily removable relation to the clvclr valve, said check valve terizo punding' the upper ond ot' the strainer' against the innei` wall of the lower end of the lasing. v

ft. inenns for ntlnchingg well Strniners to the lower ends of installed well w'isings comprising n tubular verrier Vfor-the strainer provided with a cheek valve sittaelned to the lower end ot' the strainer with the tnlnilnr Isupport` in rendilj,Y relnomhle relation to the l cheek \'nl\e, .said cheek vulve tei'nlinnting in n noxzlo for the production of a Water jet heyond the lower end of the strainer when er the lower end ot' the casing, and hlocl; on the Strainer support for swaging the upperend of the Strainer against the inner wall ot' the lower end of the casing7 the Currier being provided with a telescoping portion 'between the ,sWage block and the cheek valve and with engaging means for the swnge block in spaced relation one to the other and on opposite Sides of the swnge hlocl.

5. A4 means for attaching Well strameis to well ensings after the installation of the casing, comprising a carrie? for the Strainer I provided with a swage block in position to expend the upper end' of the installed strainer against the inner Wall of the lower portion of the casing, said carrier having n. teleseoping portion for permitting longitudinu'l movement of the carrier with respect to the strainer, and with means for engaging the swage block for delivering blows tlieieaguinst to effect the expansion of the struinen In testimony, that I claim the foregoing as my own, I have hereto aliixed my signature in the presence of two Witnesses.

ROB )RT MILLER GALBRATH.

Witnesses: t

J. E. BOYCE, "C. H. BOLINGER.

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