US1816316A

US1816316A - Pump

Info

Publication number: US1816316A
Application number: US340795A
Authority: US
Inventors: Champs James W Des
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-02-18
Filing date: 1929-02-18
Publication date: 1931-07-28
Anticipated expiration: 1948-07-28

Description

July 28,1931.. J. w. DES CHAMPS PUMP FiledFeb. 1a.. V1929 2 sheets-sheet 2 INVENTOR 3mm/.vw

[9 x EY iaitenieel July 21s, 1931 ummm-a @new 12k-11s Games., or:wirrmit,@01113.Celelfllieg HIM? y' Application, filed February 1S,. 19292; SeiialNvo, 340,795,

Thisuinveritiori reletes-,p;trtic1ila.rly,' tliougli not exclusively totlie pumping of deep oil Wllsf v i I Iii thepiiiilips at presentin use, the. ooliii'nn t.z of oilin the Well Iis lifted zuid flowered .en clisf tenore e,q1ia.ltotlie`.strol;e oftliepump, at each reeproezttionofthe pump. The lowering of tliel column 'on thedowri stroke of tlie pump is :at loss. ofgenergyfor the; equivalent. of` this,

Stroke The objects. of. tliisiinvention are to. yeliminete .tlie .feature otrepeetedly lowering the, of piimpedfliqiiid after eech: active.

195 .saine .column lmust. be.:v lifted on `this 4nextfuplifpiimping stroke and to ,provide simple, prec-4 til-e211., means I readily. applicable, to p existingTv Hii1i:i} :ii.nc,v.v systems: for,y accomplishing this desemble result-f Tlieinwfenltiori involves a, number of speciil,

novell features. of` construction, `coiiibir'iations and relations. .of parts. .as `li'ereinaifter cle-f scribed .and broadly claimed 'Elie drawings. accompanying, ande forming part ofthe specificationillustrate oneA prao- Zftical commercial embodiment of tl'ie inveIi-f tion, but it shouldA be understood tligit; tlie strutiiremey be modified Aalsreguds tliis partieiilar clisyclosurewitliout. departure from the: tiiie spirit.aiidbrozullscope ofthe invention.l

3o, Figz' l" is ebroken l; find. p art sectional` side elevatioii Qfle lengt'liofiwellgtubingcerpyiiig ,thepumptruture findfibove'that theilew e aiitoiriatic' valve fon.supporting and prevent-1 ingltlie 'retrolgrzil'e' movement of thec'olrimn j 3?.- Eis.A iS en rxerged breken Sectional. View f shewingthe Hewholdng Valve es Seated" in its. .Operative relation `Fie@ ,3' is a similar, View but showing the new valvestriietiire as. being rim into. Vthfejtubngv Mid'before seating therei 49, in; Figs; 4, fendfere Gross-sectional vViews ofthe structure as'. @substantially thefplanes of-lines L -4, -mi-fofligs. 2land3.

In, the.. illustiifiw,l the.. Working. barrel isA Shown at 7', .the plunger. Operating. thereinv is 4e, indicated' atnditheupper findlQWenv-aves are shown at Sjend 10 `respecti'vely.I The plunger. reeiprocatedby a valve, rodt 1.1 to.

Wlichsohnetd. 21.11011Shef1" rQdlQ or the sucker.; rodsonlhe... The, Workin@ barrel; is.

when .the .letter isflowerecl ,into the Work barrel' Thevalre 1:0@11 however, has' freeslicling movement tlg-1;dirglil this?, plugT oon-(v str iietio'n', sontliat the letter doesnotinterfefe, Withtlifpumping nievemelifS-i;

tion .peboyeftlie Working barrel by, special; meziiissliowii in thexillustretionas agset'ofj three dogsZLoperziting in ratdil, guide-Ways sleeve isslilebly mount-eden the rehicedL lower end portion ,241 of the .plug @body andi' is. shown Vas lifivngea `tapered(mopeilenolffporition 25H engagingvitliin :i VcorrespoiIdingly.. tapered .split wounding rinfe26 Cerryrigleds 8,91. 0r other suitable packing '2 ii'or"sealin'genfl fain-gemene with the; inner.'y WallI ofthe coller 1.4.:9 VThe bedyfoftlis. redenering iS-'ShQitIx-f esl'levnsfeli internal! flange l '2.8;' Werk-inf.'- iii @retainer 'simi/@29am thebdyl 0f 'thermeso; tligitlrit Willatrgwel with the ypliig but; be; free. fory expandingv` orgContracting moirek ments., n l y 'liesupporting dogs` 21ers 'orcedpoyitf l ofthe. plug? e L lbeeiing, pletes ,32.011

Surreundfngg- Wells O the tubing 3111. the Cellar. 1,4 and, come into, eCfQn. t'. .Suizp'rt-J are forced outwardly by the springs 30 and rest upon the shoulder 34, as shown in Fig. 2. When so seated, the expander ring becomes anchored to the collar 14 and hence any further lowering movement of the plug structure has the effect of forcing vthe packing ring down over the taper of the expander and hence expanding the packer into sealing engagement with the collar. This final movement for expanding the packer takes place after the pump structure is positioned 1n the working barrel and the shoulder 19 on the valve rod enables the plug to be forced. down solidly enough to fully expand the packer and thus seal the valve structure within the supporting collar. The pump may thereafter be operated without disturbing the plug and its valve mechanism. y

The valve rod is suitably sealed where it passes through the plug, the means for this purpose being shown as the packing 35 surrounding the rod at the lower end of the plug and yieldingly held by washer 36 engaged by spring 37 supported by a gland nut 38, which is secured by a lock nut 39. This form of yielding packing will automatically take up the wear resulting from the action of the pump rod.

To prevent the dogs from exerting any thrust on the expander ring while the appa-- ratus is being lowered in the tube, the plates 32 at the backs of the dogs are shown as engaging at the top with the upper walls 40 of the cavities 31 when in the retracted rela'N tion shown in Fig. 3. Thus the rubbing thrust of the dogs against the inner wall of the tubing and collar is transferredto the body of the plug rather than to the expander ring when the plug is being lowered to its seat, but this upper shoulder 40 is cut away at the outside as indicated at 41, so that when the dogs spring outward as in Fig. 2, the plug may have the necessary further downward sliding movement to enable the expander ring to seal the packing against the inside of the collar.

The upper end of the seating cavity 33 in the collar 14 is shown as bevelled as at 42, so as to allow the dogs to emerge gradually as they reach this cavity and so as to act as an inclined guide to force the dogs inwardly when the plug is to be removed. In this removing operation, the pump structure will first be lifted in the working barrel and the continued lifting movement will then pick up the plug. The first upward strain on the p ug will break the seal between the packing and collar and this first movement of the plug breaks the engagement between the packing ring and expander, thereby leaving the packing free to contract. The further movement causes the stop collar 43 screwed on the lower end of the plug to pick up the expander ring and the dogs, the bevelled shoulder 42 forcing the dogs inward and enabling the structure to be completely withdrawn substantially in the condition illustrated in Fig. 3.

lVith the invention installed above the pump, it will be seen that the weight of the column of liquid in the tubing is entirely taken olf the upper pump valve on the lowering stroke of the pump, leaving a partial vacuum or lowering of pressure on the upper pump valve, so that the same opens more freely to admit the oil or other liquid above the same. The supporting valves 15, with their passages 17 about the valve rod are designed to pass without obstruction the full pump flow, so that they offer no resistance on the lifting stroke of the pump. The pump thus operates more freely, requires less power and can be worked more rapidly' than with the present arrangements. The apparatus is of relatively simple inexpensive construction, sturdy in design and can be readily applied to existing forms of pumps. lt is lowered through the tubing with the pump and takes its seat automatically in proper relation above the pump. lllith this invention leakage of the pump valves is not so serious as heretofore, because the liquid lifted by the pump is held and can not run back through leaking pump valves on the return stroke of the pump. The liquid is not chui-ned by a lowering column of liquid at each downstroke of the pump and because of this same fact, the pump action is smooth and even. Thecollar which provides the seat for the plug and valve mechanism is readily connected to the tubing above the working barrel and does not interfere with the pump operations even though the packer and valve mechanism may not be used in conjunction with the pump.

lllhat is claimed is:

1. An attachment for oil well pumps, comprising a collar attachable in a line of 'well tubing above the working barrel of a pump, said collar having an enlargement and a seat therein, a plug adapted to be lowered through the tubing into said collar, a normally retracted support for said plug, said support being shiftable into said enlargement and into engagement with the seat in the collar, packing on the plug, an expander for saidl packing operable by said support upon engagement of the latter with the seat in the collar and upwardly opening valve means carried by said plug.

2. An attachment for oil well pumps, comprising a collar attachable in a line of well tubing above the working barrel of a pump, said collar having an enlargement and a seat therein, a plug adapted to be lowered through the tubing into said collar, a normally retracted support for said plug said support being shiftable into said enlarge ment and into engagement withthe seat inl the collar, packing on the plug, an expander igmaaie 3. A liquid column supporting attachment for oil well pumps, comprising a plug having a passage for a pump valve rod and valved oil passages about said rod passage, an expansible packer on said plug, an expander sleeved on said plug, outwardly thrust sup` porting dogs for the plug, said dogs having a shitting movement relative to the plug and engageablewith said expander for shitting the latter.

4. A liquid column supporting attachment for oil well pumps, comprising a plug having a passage for a pump valve rod and valved foil passages about said rod passage, an exadapted to be lowered down through a line of well tubing, said plug structure having a passage for a valve pump rod or the like and an f oil passage provided with an upwardly opening valve, an expansible packer carried by said plug, a support for the plug, said support adapted for movement relative to `the plug and an expander for the packer operable by said support in the movement of the same relative to the plug.

6. A liquid column supporting attachment for oil well pumps, comprising a plug struc- Jfure adapted to be lowered down through a line of well tubing, said plug having `a passage or a valve pump rod or the like and an oil passage provided with an upwardly opening valve,ran expansible packer carried by said plug, a support for the plug, said support adapted for movement relative to the plug, an expander for the packer operable by said support in the movement of the same relative to the plug, said support including` an outwardly thrusting dog adapted to be held in repressed relation by the surrounding walls of the tubing and a member carried by-the tubing chambered to receive said dog and to form a seat for the same.

'7. A liquid column supporting attachment for oil well pumps, comprising a plug structure adapted to be lowered down through a f line of well tubing, said plug having a' paslsagefor avalve pump rod or Ithelikeand'an -oil passageprovided with-an upwardlyfopenging 1vvalve,anaex'pansible packer Acarried .by said plug,.asup'port `ifor the plug, ysaid lsup- -port :adapted forl movement fre'lative Ato ','the

fby saidsupport'i1r'the movementzof the same relative to fthe .fpluggvsaid support including `:an outwardly Athru'stingflog adapted to be *held in :repressed relation by. the surroundfin'gwal-ls of fthe'tubing and a imembemcarf- ,ried by the tubingfchamberedf to .receive said dog and :to form afseat -for the same,;,Said chambered memberrhaving abevelled face 'to :force backAthef-supporting dogwhen a `,lifting force isyapplieditoztheplug.. v

8. l'n combination with vWellftubing anda valved pumpatthe'lower end ot the same, a `plug carrying a packer ,and insertable through the well tubing into position above the valve mechanism of lthepjump, up'wardly opening valve means carried'by saidgplugfaz; extensible and yretractable -supporthaving Ia seat in-/the plug, said seat having a shoulder orcarrying upward thrusts of the. support during lowering .movement ofthe .plug in Vthe tubing and v'said Yshoulder ,being relieved to enable upward movement of the support when said support is projected, an expander for the packer operable by the projected support in its upward movement relative to the plug and a seating member for the plug, said seating member being carried by the tubing and chambered and shouldered to permit the projection of the support and to provide a seat therefor.

9. In combination, a collar attachable in a line of well tubing, said collar having an internal seat, a plug structure having a passage and a stuffing box for a pump rod and adapted to be lowered on a pump rod down into position in said collar, expansible packing on said plug, a slidable sleeve on` said plug for expanding said packing, a radially shiftable dog seated in the plug and engageable with '-plug, Ian'rexpander lfor the packer operable i" miV . to hold the dog against pac ring expander movement of the sleeve, while the dog is retracted and to release the dog for packing expander movement when the dog is pro-` jected into the internal seatin the collar, upwardly opening valve means on the plug structure and a pump rod having a shoulder to drive the plug body downwardly relative `t o the expander sleeve when the dog is pro- )ected to support thelatter in the collar.

10. In combination, a collar attachable in a line of well tubing, said collar having an internal seat, a plug structure having a passage and a stuiing box for a pump rod and adapted to be lowered on apump rod down into position in said collar, expansible packing on said plug, a slidable sleeve on said plu for expanding said packing, a'radally shi table dog seated in the plug and engageable with the sleeve, the seat for said dog being formed to hold the dog against packing eX- pander movement of the sleeve, While the dog is retracted and to release the dog for packing expander movement when the dog is proj 5 jected into the internal seat in the collar, up-

Wardly opening valve means on the plug structure and a pump rod having a shoulder to drive'the plug body downwardly relative to the expander sleeve when the dog is projected to support the latter in the collar, the seat in the collar having an inclined portion for positively retracting the dog upon lifting movement of the plug structure.

11. In combination, Well tubing having an internal shoulder, a pump operable in said tubing and a plug structure for supporting the column of liquid above the pump and comprising a plug body having a passage for 2o the pump operating rod and an upwardly opening valved passage for the liquid lifted by the pump, an expansible packer carried by the plug body and means for expanding said packer including an operating dog en- 25 gageable With the shoulder of the Well tubing. In testimony whereof I afliX my signature.

JAMES W. DES CHAMPS.