US1890428A

US1890428A - Pump rig

Info

Publication number: US1890428A
Application number: US280004A
Authority: US
Inventors: Ferris Walter; John P Ferris; Harold L Crull
Original assignee: Oilgear Co
Current assignee: Oilgear Co
Priority date: 1928-05-23
Filing date: 1928-05-23
Publication date: 1932-12-06
Anticipated expiration: 1949-12-06

Description

DCC- 6: 1932 w. FERRls ET Al- PUMP lRIG Filed May 23: 1928 5 sheets-Sheet l W41, TER ERF/5 YHMMM ATTORN EY Dec. 6, 1932. w. FERRls ET Al.

PUMP RIG Filed May 23. 1928 5 Sheets-Sheet 2 IN VE N TO R5 #41mm L. 6191/41. WA4 mw FEW/m ATToRNl-:Y

E N NQ @m gw. v N mm www RR QN .Shuk Lp Nm t S mn M t .1 o n. l l u D Nmm TW fv Nn R Dec. 6, 1932. w. FERRls ET AL 1,890,428

PUMP RIG I Filed May 25, 1928 5 Sheets-Sheet 5 C w 9u" u a Il' MQ. 4l

Dec. s, 1932. w. FERR@ ET AL 1,890,428

PUMP RIG Filed May 23, 1928 5 Sheets-Sheet 4 INVENTORS:

ATTORNEY Dec. 6, 1932.

W. FERRIS ET AL4 PUMP RIG Filed May 2s, 1928 5 sheets-sheet 5 L, .o R

Vl m E N M R V ab O 4T T m MLN T AAH A Hw@ ,Y B

. 'WALTEB/FERRIS AND JOHN P. FERRIS,

CRULL, F TULSA, OKLAHOMA', ASSIGNORS TO THE COMPANY, OF MIL.

' AUKIEJi., WISCONSINA CORPORATION 0F n l ing operations.

and operatively Patented Dec. 6, 1932 UNITEDA STATES PATENT oFFrcE MILWAUKEE, WISCONSIN, AND HAROLD Iz.

WISCONSIN PUMP BIG Application led May 23,

This invention relates to hydraulic pump rigs for deep wells such as oil wells.

One object of the present invention is the provision of a hydraulicpump rig capable of ready installationlv without interference with the various other equipment with which such wells are ordinarily provided. To this end provision is made for permanently mounting the motor cylinder in elevated p0- sition beside the well, where it will not interfere with the rod and tube-pulling and sink- The cylinder is preferably mounted in substantially horizontal position connected with the pump rods through power transmittin means de` signed for adjustment into active position directly over the well or into inactive position where it will not hinder the pulling or sinking of rods and tubing.

' Another object is the provision ofI a rigid support for the motor cylinder and associa-ted part-s Well adapted for the purposes above outlined.

Another object is the provision of a novel counterweight system by which the load onl the motor cylinder is substantially the same in both directions of operation.

Another object is the provision of im-v proved means for controlling the operation of the motor cylinder.

Other more specific objects and advantages l will appear from the following description o an illustrative embodiment of the present invention.

In the drawings Figure 1 is a perspective view of a hydraulic pump. rig constructed in accordance with the present invention. Fig. 2 is a fragmentary plan view of the supporting frame with the motor cylinder mounted therein.

Fig. 3 is a side elevation of the parts shown in Figure 2.

Fig. 4 is a plan View of 'the forward portion of the supporting frame.

Fig. 5 is aside elevation of the parts shown in Figure 4.

Fig a sectional view, on a larger scale, taken substantially along` the line 6-6 of 53 Figure 3.

f broken rods and tubing 1928. Serial N0. 280,004.

Fig. 7 is a similar sectional view, taken substantially along the line 7-7 of Figure 2.

Fig. 8 is a similar sectional view taken substantially along the line 8-8 of Figure 5.

Fig. 9 is a similar sectional view taken substantially along the line 9-9 of Figure 5.

Fig. 10 is a longitudinal sectional view, on

the present invention is shown in Figure 1 v associated with other oil well equipment of standard form. This equipment includes the usual derrick 1, casinghead 2, and tubing 3 extending upwardly provided withA thev usual stuffing box 4 for receiving the vertically reciprocating polish rod 8 through which the underground pump is operated. An oil discharge pipe 6 is connected with the tubing 3 through-an appropriate fitting 5, and a gas discharge pipe 7 is connected in the usual manner with the head 2. The derrick 1 is ordinarily equipped with mechanism (not shown) for pulling from the well and through the head and v .for sinking fresh rods and tubing into the well.

The pump rig the derrick to a point directly above the well. The trestle is preferably of steel construction comprising a fabricated beam 10 consisting ofupper and lower `

girders

11 and 12 rigidly united by tie braces 13 to form side frames 14 and 15 ofthe beam, the side frames being rigidly connected by cross bars 16, a rear end plate 17, cylinder head mounting plates 18 (Fig. 2), and a guide box 19 at the forward end of the beam. The beam 10 is supported in horizontal elevated position by appropriate means such as leg frames 20. and 21 and a post 22. The guide box 19 is formed of top and bottom plates projecting into shown includes a trestle mounted beside the well with the forward end preferably composedl of a U block, the legs 54- 2 weones 23 (Figs. 4 and 5) and side plates 24 riveted to the inset ends of the

girders

11 and 12 and coacting to form a guide for telescopically receiving an extension beam 25. 7The beam 25 is normally retained in extended position, with the forward end thereof directly over the casing head 2, by an abutment member 26 rigidly but removably iiXed to the beam 10.

- mounted on a shaft 32 journaled in bearings 33 at the rear end of the beam 10. v

lengthwise of and within the beam 10 intermediate the ends of the beam.

ln this instance the cylinder is supported by mounting plates 18 formed integral with the end heads 35 of the cylinderand bolted or otherwise Xed to the beam as indicated at 36. A piston 37, having the usualpacking rings 38, is closely fitted for lengthwiserecipr rocation within the cylinder. A rod 39 extending through the cylinder heads and piston is tixed to the piston by pins 40 and slidable in stu'ing boxes 41 in the cylinder heads, to reciprocate under force of uid .pressure admitted to the cylinder through pipes'42 and 43 which communicatelthrough ports 44 and 45 with chambers 46 and 47 in the respective cylinder heads. 48 designates cocks having nipples 49 threaded into ports 50 leading from the chambers 46 and 47, through which air may escape from the cylinder.

Mounted on the beam 10 at opposite ends of the cylinder 34 are rails 51, for the flanged wheels 52 of carriages 53 (Fig. 11), each of which are provided with transverse apertures 55 in which the axles 56 of the anged wheels 52 are secured by set screws 57. The ends of the piston rod 39 have reduced-sha'nks 58 extended through apertures 59 in the bodies of the blocks and nuts 60 are threaded into the ends ofthe Shanks to clamp the carriages firmly to the ends of the rod. Eye

bolts 61 are attached to the carriage blocks at opposite sides of the rod connection and connected with the eye bolts are ropes 62 which run over the sheaves 30 and 31 and are provided with couplings 63 and 64. The coupling 63 at the forward end of the structure 1s connected with the pump polish rod 8 and the coupling 64'at thel opposite end vof the structure is connected with ha. counter-balance weight 65. The weight 65 is heavier than the string of pump rods Within the Well, the excess weight being available to assist the piston 37 in liftingthe column of oil during the upstroke ot the pump. During the down stroke, when the column of oil is stationary, this excess weight imposes a load on the pistoh. The weight 65 is preferably made equal to the weight of the pump rods plus one half of the weight of the column of oil so that the load on the piston is substantially the same in both directions of motion.

rlhe motor cylinder 34 is supplied lwith driving liquid through the

pipes

42 and 43, selectively, from a variable displacement, re-

versible flow pump 66 ot a well known type under the control of mechanism preferably such as will now be described. The pump shown is fully described in the copending application of Walter Ferris and John l?. F erris, Serial No. 92,135 to which reference is made for a complete understanding of the l construction and operation thereof. A main motor cylinder 34 is mounted Mounted on the beam .10, at the pump side, are brackets 67, suspending an I rail 68, and slidable on the lower flanges of the l rail are shoes 69, carried by pins 70 on a yoke 71 attached to a beam 72, preferably by bolts 73. 'l` he shoe mechanism is located at one end of the beam 7 2 and the opposite end of the beam' is attached, preferably by bolts 74,to the liattened extension vofthe axle pin 56 of the traveling carriage 5,3 at the outer end of the structure. Consequently the beam 72 and shoes 69 reciprocatev with the carriage and ram piston.

. 76-77 (Figs. 1, 2, 3 and 4) designatetrip blocks having heads 78 provided with T slot-s 79 whereb the blocks are adjustably mounted on the ldottom flanges of the beam 72, to be held thereto by set screws 80. Depending from oneedge of each of the heads 78 is an ear 81. Attached to each ear 81 isa pin 82 and pivotally mounted von each pin 82 is a cam 83 ha'ving a back set contact face 84; the cams having a thickness less than the width of the heads 78 so that when the trip blocks are` arranged oppositely'on the beam 72 (Fig. 3),

cams 83 travel in parallel planes andthe y cam faces 84 alternately-engage corresponding lugs' 85, 86 onthe sleeve 87'of a control lever 88 that is journaled on an axle 89 carried by a plate 90 on the side of the beam 10. Each cam has a heel 91 adapted for stop contact with the under side of the head 78 of the block 76 or 77 upon which it is mounted, to lockthe cam and effect operation of the control lever when the cam is travelin in one direction but permitting the cam to pivot upon engagement with its lever lug when traveling in the opposite direction. Each of the trip lugs has a cushioning spring 92 on tinued until4 the face 84 of its active face for absorbing shock of contact by its actuating cam.

The control lever 88 is of spider formation, including a pair of primary cross arms 93-94 provided with eyes 9394 carrying eye bolts 96-97, and connected with the eye bolts are wires 98-99 which are attached to opposite ends of a lever 100, forming a part ot a that described in the copending application of Lawrence A. Barrett and John P. Ferris, Serial No. 85,207. It will suflice here to state that when lever 100 is in one position the pump 66 delivers liquid at a substantially steady rate into the pipe 42 and receives liquid at the same rate through pipe 43, and when the lever 100 is shifted into another position by the action of the lever 88 through

wires

98 and 99, pump flow is reversedso that the pump then delivers liquid into pipe 43 and receives liquid from pipe` 42. Provision is made in the reversing mechanism described in said last named application for regulating the rate of reversal to thereby regulate the rate of change of flow in

pipes

42 and 43 and consequently regulate the rate of acceleration and deceleration of the piston 37 and pump rods at each end of the stroke.

In normal operation the piston 37 travels toward the right under the pressure of liquid supplied from the pump 66 through pipe 42, and acting through the rod 39, cable 62, and polish rod 8 causes the pump to execute an upward stroke. This' motioncontinues until ,the face 84 of the cam 83 on trip block 76 strikes the spring 9210i lug 85 and throws the arm 88 clockwise. This action of the arm 88,

transmitted to lever 100; initiates the action of the pump reversing mechanism to thereby reverse the pump. The pump then delivers liquid through pipe 43 causing the piston 37 to travel towardthe left to thereby effect a down stroke of the polish rod 8 and pump connected therewith. This motion is concaml 83 on trip 92 of lug 86 and throws the arm 88 1n the opposite direction, whereupon the pump 66 is again reversedand the polish rod 8 and connected an up stroke. The length of each stroke is determined by adjustment of the trip blocks 76 and 77 upon the beam 72.

The control lever 88 also includes a pair of secondary arms 101 and 102, having

eyes

103 and 104, carrying

eye bolts

105 and 106. Connected with the eye-bolts are wires 107 block 77, strikes the spring and 108,which are directed over guide pulleys 109 and 110 axially mounted on brackets 111 'and 112 adjacent the forward end of the beam 10, and connected-with the opposite ends of a lever 113 Apivotally mounted on the post 2 2 and having a handle/114 accessible from the derrick floor, through which the pump may be manually controlled independently of the pump reversing mechanism similar to v pump startsautomatictrip mechanism hereinabove described.

The pump 66 may be driven by any appropriate means such as an electric motor 115 under the control of a switch 117 and starting rheostat 116. The

pipes

42 and 43 may be equipped with cut-oit valves 118 and 119, respectively, and a pressure indicator 120.

Various changes may be made in the embodiment of the invention hereinabove specifically described without departing from or sacrificing any of the advantages .of the invention as defined in the appended claims.

1. In a pump rig for deep wells the combination of pulnp reciprocating means, a hydraulic motor disposed beside a Well, flexible driving connections between said motor and means, said connections including a member normally disposed in active position directly over the Well, a movable support for said member permitting Withdrawal of said member into inactive position beside the Well, and a pumpfor driving said motor alternately in opposite directions to reciprocate said pump reciprocating means.

2. In a pump rig for deep wells the combination of pump reciprocating means, a hydraulic motor, means for mounting said motor in elevated position at one side of a well, flexible driving connections between said motor and means. said connections including a member normally disposed in active position directly over'the Well, a telescopic support for said member permitting withdrawal thereof into. an inactive position beside the well, and a pump for driving said motor alternately in opposite directions to reciprocate said pump reciprocating means.

3. In a pumpdrig `fordeep wells the coinvbination of pump reciprocating means, a piston and cylinder unit. means for mounting said pistn and cylinder unit beside a well, driving connections between said piston and cylinder unitand said means. a portion o rsaid connections being normally disposed directly over the .Well but movable therefrom into inactive position driving liquid to the cylinder alternately to eiect reciprocation of -said reciprocating means. 1

l 4. In a pump rig for deep wells the combination of pump reciprocating means, a piston and cylinder unit, means for supporting said unit substantially horizontally in elevated position beside the well, `driving connections between said means and one end of said unit, a counterweight connected with the other end of said unit, and a pump for supplying a driving liquid to the opposite ends of said cylinder alternately to reciprocate said reciprocating means.

5. In a pump rig for deep wells the combination of pump reciprocating means, a piston and cylinder unit, means for supporting said unit horizontally in elevated position beside a Well, driving connections between said means and one end of said unit, al counter- Weight connected with the other end of said unit, the weight of said counterweight being 'substantially equal to the Weight of said pump reciprocating means plus one hall" the Weight of the supported column of liquid within the well, and a pump for supplying a driving liquid to the opposite ends of said cylinder. alternately to reciprocate said reciprocating means and said counterweight. Y 6. In a pump rig tori deep Wells the combination of pump reciprocating means, a substantially horizontal beam mounted in el,- evated position beside a well, an extension beam telescopically associated with one end of said first named beam and projectable over the Well, a piston and cylinder unit supported by said first named beam, flexible driving connections between said unit and said pump reciprocating means, a guide .member for said connections mounted on said extension beam,

and means for delivermg a driving liquid to the opposite ends of said cylinder` alternately to reciprocate said reciprocating means.

7. Well pumping apparatus including, in

Acombination with vertical pump reciprocating means, a horizontal beam, a cylinder fixe-d on the beam, a piston in the cylinder having a rod extended through opposite ends of the l cylinder, flexible means connecting said pump reciprocating means with one end of the piston rod, a counterweight for said pump reciprocating means, flexible means connecting the counterweight with the other end of the y piston rod, guides 'for the flexible connecting cylinder to reciprocate the piston and pump means, and a pump for selectively delivering fluid under pressure to opposite ends `of' the reciprocating means.

8. Well pumping apparatus including, in

combination with vertical pump reciprocating means, a horizontal beam, a cylinder fixed on the beam. a-piston in the cylinder having a rod extended through opposite ends of the cylinder, flexible means connecting the pump reciprocating means with one end ofthe piston rod, a counterweight for the pump reciprocating means, flexible means connecting the counterweight with the other end of the piston rod, guides for the flexible connecting means, a reversible, variable displacement pump connected with opposite ends ofthe cylinder, means for controlling direction of flow from the pump, the piston for shifting said control means.

9. Well pumping apparatus including, in combination with vertical, pump reciprocating means, a horizontal beam, a cylinder fixed on the beam, a piston in the cylinder having a rod extended through opposite ends of the cylinder, flexible means connecting the pump rod with one end of the piston rod, a coun- 12. Well pumping and means operable with f] Leeaeas l for the flexible connecting means, a reversible,

variable displacement pump connected with opposite ends of the cylinder, means for controlling direction of flow from the pump, and means operable with the piston for shifting said control means, said last named means being adjustable to vary 'the stroke of' the piston.

10. Well pumping apparatus including', in combination With vertical pump reciprocating means, a horizontal beam, a cylinder fixed on the beam, a piston in the cylinder having .a rod extended through opposite ends'ot the cylinder, flexible means connecting the pump reciprocating means with one end of the piston irod, a counterweight for the pump reciprocating means, flexible means connecting the counterweight with the-other end of the pist0n rod, guides for the flexible connecting means, a reversible, variable displacement pump connected with opposite ends of the cylinder, means for controlling direction of llow from the pump, means operable with the jpiston forl shifting said control means, and manually operable said control means to to the cvlinder.

11. Well pumping apparatus including, inl combination with vertical pump reciprocating means, a horizontal beam, a cylinder fixed on the beam, tracks at opposite ends of the cylinder, carriages movable on said tracks, a piston in said'cylinder having a rod extended through opposite ends of the cylinder and fixed to said carriages, flexible connection between one of the carriages and the pump reciprocating means, a counterweight flexibly connected with the other carriage, guides for said flexible connections, a reversible, variable displacement pump having flow connection with opposite ends of the cylinder, and means controlling direction of flow from the pump.

vary volume ofdlow' combnation with vertical pump reciprocatmeans for adjusting apparatus including, in n ing means, a horizontal beam, a .cylinder I fixed on the beam` tracks at opposite ends of the cylinder, carriages movable on said tracks, a piston in said cylinder having a rod lextended through opposite ends of the' cylinder and fixed to said carriages, flexible connection between one of the carriagesand the pump reciprocating means, a counterweight exibly connected with the other carriage,

guides for said flexible connections, a reversible, vari able displacement pump having flow' connection with opposite ends ofthe cylinder, means controlling direction ofA flo-w from the pump, a beam connected with said .piston to reciprocate therewith, and means on the beam for shifting the direction controlling means.

lic

Leccese 13. Well pumping apparatus including, in combination with vertical pump reciprocating means, a horizontal beam, a cylinder fixed on the beam, tracks at opposite ends ot the cylinder, carriages movable on said tracks, a piston in said cylinder having a rod extended throughopposite ends of the cylinder and fixed to said carriages, flexible connection between one of the carriages and the pump reciprocating means, a counterWeight flexibly connected with the other carriage, guides for said flexible connections, a reversible, variable displacement pump having iiow connection with opposite ends of the cylinder, means controlling direction of ilovv trom the pump, a track paralleling the cylinder, a beam ixed to one of thecarriages and having a support movable on said track, and means on the beam for shifting the direction controlling means. 1

14. Well pumping apparatus including, in combination with vertical pump reciprocating means, a horizontal beam, a cylinder tixed on the beam, tracks at opposite ends of the cylinder, carriages movable on said tracks, a piston in said cylinder having a rod extended through opposite ends of the cylinder and fixed to said carriages, flexible connection between one ot the carriages and the pump reciprocating means, a counterweight flexibly connected with the other carriage, guides jfor said flexible connections, a reversible, variable displacement pump having flow connection with opposite ends of the cylinder, and means controlling direction of iow from the pump including a lever, a,track parallel with the cylinder, a beam fixed to one of the carriages and having a support movable in the track, brackets on the beam at opposite sides of the lever, and cams on said brackets engageable with said lever to reverse direction of flow from the pump.

15. Well pumping apparatus including, in combination with vertical pump reciprocating means, a horizontal beam, a cylinder tixed on the beam, tracks at opposite ends of the cylinder, carriages movable on said tracks, a vpiston i said cylinder having a rod extended through opposite ends of the cylinder and fixed to said carriages, flexible connections between one of the carriages and the pump reciprocating means, a counter- Weight flexibly connected with the other carriage, guides for said flexible connections, a reversible, variable displacement pump having flow connection with opposite ends of the cylinder, and means controlling direction of flow from the pump including a lever, a track parallel with the cylinder, a beam fixed to one of the carriages and having a support movable in the track, brackets on the beam at opposite sides of the lever, cams on said brackets enga direction of ow from the pump, ually operable means connected and man- With said eable with said lever to reverse lever tor regulating volume of How from the pump..

16. Well pumping apparatus including, in combination with a vertical pump reciprocating means, a horizontal beam, a cylinder fixed on said beam, tracks at the ends ot the cylinder, carriages on said tracks, a piston in said cylinder extended through the cylinder heads and ixed to the carriages, a reversible, variable displacement pump having ovv connection with opposite ends of the cylinder, a sleeve journaled on the beam, tvvo pairs ot oppositely directed arms on the sleeve, means connected with respective arms of one pair controlling flow from the, pump, a track at the side ot the cylinder, a beam fixed to one ot' said carriages and having a shoe slidably supported on said track, otset brackets on said carriage beam at opposite sides of the control lever, oppositely directed cams o n said brackets, lugs on said sleeve having oppositely directed contact faces engageable by corresponding cams to shift the pump control lever, and lever mechanism connected with the arms of the second pair tor regulating volume ot flow Jtrom the pump.

ln Witness whereof, We hereunto subscribe our names, WALTER Fnnms and JOHN P. Farms, on this 8th day of May, 1928, and HAROLD L. CRULL, on this 10 day of May, 1928.

. Waarna rurais. JGHN P. FERRlS. HAROLD'L. @BULL its