US1654329A - Well-pumping apparatus - Google Patents

Description

Dec. 27, 1927. v 1,654,329

J. B. HAWLEY, JR

' WELL PUMPING APPARATUS Filed Jan. 17, 1924 3 Sheets-Sheet 1 IL" .l.

I Inflenior J ZWBHqzMZey Jr:

Dec, 27, 1927.

' J. a. HAWLEY, JR

WELL PUMPING APPA-RATUS Filed Jan.17, 1924 s Sheets-Sheet 2 69%? /Qws Dec. 27-, 1927. 1,654,329

J. B. HAWLEY, JR

WELL PUMPING APPARATUS Filed Jan. 17, 1924 3 Sheets-Sheet 5 ma 4 5 f /07 ,V //0 fizz/670507? LZbhU/BJI CZMZQyJT.

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Application filed January 17,1924. Serial a... 686,710.

The present invention has to do with imrovements in well pumping apparatus. orc particularly the invention has to do with improvements in apparatus for pumping oil and similar liquids from tubular Wells.

The invention has reference to a pumping unit which is so constructed that it can be lowered to the proper point in the well and there secured in place in such a manner that it can thereafter proceed with its normal function of pumping the oil up through the well above. p

- Still more particularly the invention has to do with a self-contained pumping unit which is provided with a transverse partitionwhich serves, when the pumpin unit is in place within the well, to estab ish a more or less oil tight partition at the position of the pumping unit, the parts being moreover so arranged that the "oil is drawn or pumped through this partition and de-- livered above the same, so that when the well casing above'the partition hasbeen completely filled with oil, the latter will be dis-v charged from the top of the well. continuously thereafter. 1

It is an object of the invention to provide .a unit of the general class just above referred to which is furthermore so constructed that when it is lowered into position within the well casin it will automatically lock itself tothe we casing so .as to be held rigidl against rotation or vertical displacement. is nevertheless an object in this connection to provide an arrangement such that the pumping unit may be raised out of the well when necessary for replacement or repair.

It is a further object of the invention to make satisfactory provision for transmitting thenecessary driving power down through the well to the pumping unit. Apreferred arrangement is that in which the pumping unit itself is provided with an electric motor which drives the pump within the pumping unit. In this case the power is delivered from above by the use of an electric cable reaching down through the upper portion of the well. In this case the weight of the pumping unit and the column of oil sustained above it ma. be readily supported by a supplemental cab e of steel or the like, and

.there is.n0 rotative tendency on the. part of the pumping unit. In such case the provision of means for locking the pumping unit at a given point within'the well casing may be e'hminated with satisfactory results.

'I also contemplate the delivery of the necessary dllVlIlg force to the pumping unit through the medium, of a cable which. is 1'0- tated b properly a plied power at its upper end. uc h cable w en used; may also serve the functlon 'of sustaining all or a portion of the weight of the pumping unit, but suit able means should be provided at the pum ing unit itself-for resisting the rotative ten' ency due to the rotation of the cable.

Othr'objects and uses of the invention i will appear from adetailed description of the same, which consists in the-featuresof' construction and combinations of parts-hereinafter described and claimed.

1n the drawings: I Figure 1 shows a longitudinal section 'throu h an electrically driven pumping unit embo ying the features of the present invention;

0 Fig. 2 shows a transverse section on the line 2-2 of Fig. 1, lookingin the direction of the arrows;

- Fig. 3 shows a transverse section on the line 33 of Fig. 1, looking in the direction of the arrows;

Fig. 4 shows a longitudinal section A through another form of pum ing unit which is driven by a rotative cab e. In the construction of Fig. 4 the transverse parti-. tion is placed above the position of the lockmg dogs; 7

ig. 5 shows a transverse section on the line .5'-5 of, Fig; 43 looking. in; the direction of'the arrows;

Fig. 6 shows a transverse section on the line 6-6 of Fig. 4, looking in the direction of the arrows;

- Fig. 7 shows a longitudinal section of another form of pumping unit whichis also driven by the use ofa rotative cable, but in this case the transverse partition is placed belowthe position of the locking dogs;

Fig. 8 shows a transverse section on the line 8 -8 of Fig. 7, looking in'the direction Y of the arrows;

Fig. 9 shows a transverse section on the line 99 of Fig. 7, looking in. the direction of the arrows; and

Fig. 10 shows a transverse'section on the line 10-10 of Fig. 7, looking in the direction of the arrows. v

Referring first to the construction shown 'block 18. These 'ceives oil the cable 15. The detailed construction of this motor is not illustrated nor referred to, since, manifestl many difierent forms of motor, either direct or alternating current, may be used.

The motor is preferably mounted within an oil tight casing including the cylindrical member 16, the upper head 17, and the base parts are preferably brought together in oil tight fashion, so that if desired the interior chamber 1.0 of the motor itself may be packed with a suitable lubricating and insulating oil. WVhen the motor is of the alternating current type, the presence of this oil will in no wise interfere with a satisfactory operation thereof, and

in many cases the commutator and-brushes of a direct current motor will also operate with entire satisfaction Within an oil bath. The electric cable 15 preferably passes through a stufling box 20 at the point where it enters the motor unit so as to prevent the transfer of oil at this point.

The armature 13 drives the vertical shaft 21 whose upper end finds a bearing in the head 17, and whose lower end passes out through the base block 18 through a suitable stufling box 22. This stufling box will serve to effectively prevent interchange of oil along the motor shaft.

Beneath the motor unit is a pumping unit designated in its entirety by the numeral 23. The same is illustrated as comprising a gear pump having the central gear 24 meshing with a com anipn gear 25, both of said gears working within the pumping chamber 26 in the pump block 27. This chamber 26 refrom'below through an inlet port 28 which in turn communicates with a transverse passage 29 beneath the gear pump 28 is formed in the formed a discharge-port in the cap block 32, said discharge port-being than the well.

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itself. Such transverse passage "29 receives oil rising through a central tube 30, the lower end of which reaches below the pumping unitand preferably carries a strainer or screen 31 at its inlet end.

' The pumping unit is closed at its upper side by a cap block 32, and also includes a base block 33 at its lower side. The port base block, and there is designated by the dotted circle 34 in Fig. 3. The oil is discharged through said port upwardly above the pumping unit and rises through the well past the motor unit which is of smaller size The central gear 24 of the pumping unit preferably lies -directly below. the motor shaft 21 with which it is conveniently con-- nected by a direct drive. Beneaththe pumping across the well casing and serves to effectively prevent a return flow of the oil delivered above the pumping unit. This partition ineludes a series of upwardly facing cup leathers 35, 36 and 37 together with the intermediate spacer blocks 3 39 and 40 and the base block -41.-;, All of these blocks are conveniently drawn together in rigid'fashion by a series of through bolts 42, 43. and 44, as clearly illustratedr The through bolts above referred to also serve to join the motor and pumping units together, suitable spacer blocks 45 being placed on the through bolts and between the two units. \Vhen this construction is used the through bolts may also be carried clear up throng-11 the motor uni so as to draw its head and base blocks solidly into engagement with the shell 16. The oil delivered from the pumping unit finds its way freely between the spacer blocks 45 and thence up past the motor unit.

Owing to the considerable weight of the combined motor and pumping unit together with the column of oil abovethe same, I prefer to provide a cable 46 by which it may be'sustained from the upper end of the well casin This cable is conveniently connected into a collar 47. on the cap block 17 .by the use of a set screw or the like 48.

In connection with this construction it will be noted that by initially filling the motor chamber 19 with suitable insulating and lubricating oil the hydrostatic pressure due to the column of oil standing above the partition is substantially balanced and only a very slight seepage can take place into the pumping unit past the stutfing box 22. This is an important feature when it is considered that in many cases these pumping units are used in very deep shafts, in some cases more than 2300 feet, so that the hydrostatic pressure exceeds 1000 pounds per square inch.

Referring to the construction illustrated in Figs. 4, 5 and 6, the pumping element 40 comprises a gear pump having the central gear 50 and the companion gear 51 working within a chamber 52.. The central gear 50 is mounted'on a drive shaft 53 whiehpasses up through the head of the pumping element and is connected to the suspending-cable 54 by a suitable coupling 55.. This suspending cable reaches down through the well frontthrough an inlet port 59 which reaches sidewise and connects with a central downwardunit vthere is estab lrshed a transverse partition which extends vThe oil is delivered to the gear pump serve todraw these parts rigi sockets the chamber 83.

nos 4,3150

ly reaching tube 60. The lower end of the tube is provided with suitable inlet openings and screens 61. 1 The oil discharged from the gear pum rises through a port in the upper end of t e pumping element and designated by the numeral .62.

' By rotating the gear 57 and the supporting cable, the ear pump is driven.. This creates a con'si erable rotative tendency in the casing of the gear pump and the same must be effectively resisted as otherwise the whole unit will turnaround with the rotation of the cable. 1

Beneath the gear pump is laced a transverse partition which exten s clear across the well casing and includes the on leathers 63 and64 separated b a spacer lock 65. A cap block 66is place above the on leather 63 and a base block 67' below t e cup leather 64. A series of throizfih bolts 68 y together.

A series of -lugs or other separating connectors 69 are p aced between the pumping element-49andthe cap block 66.

A series of dogs 70 preferably three-in number are ivotally mounted "within 72 in the ase member 67. These pivotal mountings are provided .by pins 73. A sprin 74 normally tends to roject'each dog into t e workin osition w erein it lies at a slight angle be ow the horizontal, and wherein its outer looking I gee engage firmly with the well casing. A col ar 75 is initially placed around the dog 70 before the pumpn unit is lowered into the well, and said co ar is sustained against ordinary shock by the friction of the do 5 against it. When the workin position '0 the pum ing unit is reache produced and the collar 75'is thus thrown own and release sjthe do Ordinarily the collar will fall upon an be sustained by a flange 76 at the lower end of thebase block 67 so as to prevent said collar from dropping to the bottom of the well.

In the construction shown in Figs. 7, 8, 9 and 10, the pumping unit is also sustained and driven by a cable, 77 whose u r end is secured to the driving gear 7 8. This driving gear is placed above the cross block 79 at the upper end of the well andmaiyL freely rotate by rggson of the presence of t e roller bearthe present construction the pumpingelement includes a central gear .81 together with a companion car 82 working within The oil is drawn throu h an inlet port 84 inthe base block'85, reac ing' said inlet port from an inlet pipe 86' havin the screen 87 at'its lower end. The oil is isch'arged from the pumping unit throu h a port-88 which leads sidewise through t e cap block 89 of the pumping element.

Abovethe-pumping element is placed a .dog block, 90 havmg thedogs 91 pivoted ..In order to hold the dogs within their sockets while themedium of aroller bear on the lower end of the shaft .98 trans- 8 'a' pair. of cup lea within the well, a vio ent shock is means. holding all of said elements within the sockets 92 on the pivot pins 93. x

The springs 94 tend to project the'dogs into the outer working pos tion when they are released.

pumping unit is being lowered into the wel a collar 95 is provided around the dog block 90. Said collar 95 has a downwardly reaching stem 96 at the upper end of which is the inwardly reaching 7 .arm 97 which can .be struck by a body tains the wei ht of the pumping unit and the superimpose column of oil through the 99. A flange mits the force to the rollerbearing. This flange also carries a pairof drive pimons 101 and 102 which-mesh with a stationary annu'-. l'ar gear 103 which surrounds them. They also'mesh. with a endof the shaft 105 which reaches upwar 1y from the central gear 81 of'the pumping element.

The transverse partition is established by with an intermediate spacer block 108 and the cap and base blocks 109 and 110 respectively. -.A series of throu h bolts'111, 112

and 113 reach upwardly t rough the entire dimensions of the pumping unitand serves to secure all of the parts properly together.

While I have herein shown and described only certain embodiments in the features of my present invention, still I do not limit myself to the same the claims.

I claim:

1. A well pumpin unit 'comprisingfin combination a motor e ement anda umping element in vertical alignment an of size suitable for. convenient introduction into the well casing, a spacing means between said pump and motor elements, a transverse artitionwbelow said pumping element and a ving a passage for the flow of .fluid to sa d pumping element, rods passingthrough said transverse partition, (pumpmg element, spacing means, and sai motor element, and I said rods in lace whereby are secure together as a 2. In a well pumping apparatus, a pumping element of-a size suita e for convement introduction into a well casing, a transverse partition below said pumpin element insertable therewith into sai well casing, said transverse partition comprising a plurality of a ertured artition blocks and a pluralityo apertur therebetween, and meansfor clamping said spacing blocks pinion 104 on the upper 00 ers 106 and 107 together 95 except as I may do so in, 105

and gaskets together and for securing said partition compris' a plurality of spacing partition in fixed relation to said pumping locks and a plura ity 'of gaskets therebe- 10 element. 4 tween having upwardly directed annular 3. In a well pumping apparatus, a pumpflanges, and means for clamping said blocks 5 ing element of a size suitable for convenient and gaskets together and for securing said introduction into a well casing, a transverse partition in fixed relation to said pumping partition below said pumping element and element. 15

ii insertable therewith into the well casing, said JOHN B. HAWLEY, JR.

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