Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3050006 A
Publication typeGrant
Publication dateAug 21, 1962
Filing dateApr 8, 1960
Priority dateApr 8, 1960
Publication numberUS 3050006 A, US 3050006A, US-A-3050006, US3050006 A, US3050006A
InventorsWilliam C Wolf
Original AssigneeWilliam C Wolf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Deep well submersible pumping unit
US 3050006 A
Abstract  available in
Images(3)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

3 Sheets-Sheet 1 A INVEN TOR. ZzZ//f/z @Zaj W. C. WOLF DEEP WELL SUBMERSIBLE PUMPING UNIT A Trae/Vey;

Aug. 21, 1962 Filed April 8, 1960 w. c. WOLF 3,050,006

DEEP WELL SUBMERSIBLE PUMPING UNIT 3 Sheets-Sheet 2 Aug. 21, 1962 Filed April 8, 1960 4.. M a, E@

Aug. 21, 1962 w. c. woLF DEEP WELL SUBMERSIBLE PUMPING UNIT 3 Sheets-Sheet 5 Filed April 8, 1960 United States 3,050,006 DEEP WELL SUBIVERSIBLE PUMPDIG UNIT William C. Wolf, 1828 Churchill Way, Oklahoma City, Okla. Filed Apr. 8, 1960, Ser. No. 20,933 2 Claims. (Cl. 10S- 46) The present invention relates to deep well pumps generally and in particular to a deep Well electrically driven hydraulically operated pumping unit.

Previously proposed and presently in use are electrically `driven hydraulically operated deep well pumps. Not all of the pumps proposed or in use are commercially successful for many reasons. A chief defect in the pumps presently in use resides in the fact that the pumps operate entirely submerged in the oil to be pumped and the oil carries, in most cases, abrasive particles which damage the sliding parts of a pump. Also, the oil being pumped may carry sulphur, acids, or thelike, which damage the electrical windings of the electric motor which drives the pump.

An object of the present invention is to provide an electrically driven hydraulically operated pumping unit which has a minimum number of sliding parts operating in the oil to be pumped.

Another object of the present invention is to provide a deep well oil pumping unit which is provided with seals which separate the chamber containing the electric motor and pump from the reservoir chamber and oil collection and return flow chamber.

A further object of the present invention is to provide a deep well submersible oil pumping unit which has a minimum number of working parts, one which lends itself to assembly and disassembly with ease and facility, and one which is commercially practical.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in conjunction with the annexed drawings, in which:

FIGURE 1 is a view partially in section of the pumping unit of the present invention installed in a well casing, with midportions of the unit being broken away;

FIGURE 2 is a View on an enlarged scale and partially in section of the lower end portion of the apparatus shown in FIGURE l;

FIGURE 3 is a view partially in section of the remainder portion of the apparatus shown in FIGURE l, and on an enlarged scale;

FIGURE 4 is a view similar to FIGURE 2, showing the .pump of the unit at the end of the stroke opposite to that shown in FIGURE 2;

FIGURE 5 is a view of a portion of the unit shown in FIGURE 3, showing the lift pump at the opposite end f its stroke from that shown in FIGURE 3;

FIGURE 6 is a View in section of the control valve of the unit, shown in one position;

FIGURE 7 is a view similar to FIGURE 6, showing the control valve in the opposite position;

FIGURE 8 is a View taken on the line 8--8 of FIG- URE FIGURE 9 is a view taken on the line 9-9 of FIG- URE 4;

FIGURE 10 is a view taken on the line 10-10 of FIG URE 2; and

FIGURE ll is a view taken on the line 1=111 of FIG- URE l0, and on an enlarged scale.

Referring in greater detail to the drawings in which like numerals indicate like parts throughout the several views, in FIGURES l to 5, the reference numeral 12 designates generally a well casing in a deep oil well al- 3,050,006 Patented Aug. 21, 1962 though the unit of the present invention is applicable as well to a water well.

The pumping unit of the present invention is designated generally by the reference numeral 14 and it comprises a hollow tubular member 16 closed at the bottom by a bottom plate 18 (FIGURE l) and closed at the top by an internally threaded plate and collar assembly 20, shown most clearly in FIGURE 3.

An oil eduction tube 22 surmounts the upper end of the tubular member 16 and is threadably engaged in the top plate and collar assembly 20. The upper end portion of the tubular member 16 is provided with a plurality of holes 24, shown most clearly in FIGURE 3, which constitute ingress openings for oil from within the casing 12 into the lower end of the tube 22. The upper end of the tube 22 is connected to a pipe 26 leading to the surface to a point of collection of the oil pumped therefrom. The space within the tubular member 16 adjacent the holes 24 constitutes a deep well oil receiving chamber.

Within the tube 22 is pumping means embodying a lift pump assembly 2S including a valve seat 30' on which is normally seated a ball rvalve '32, the ball valve 3K2 and seat 30 constituting a check means within the assemby 28.

`In the upper end of the tube 22 is another valve seat 34 on which is normally seated a ball valve 36, the ball valve 36 and valve seat 34 constituting another check valve assembly.

The tubular member 16 is subdivided into a plurality of chambers superimposed one upon the other, the lowermost chamber, designated by the numeral 38 in FIGURE l, constituting a support chamber. The chamber next to the support chamber 38 constitutes a hydraulic fluid reservoir, designated by the numeral 40. Next above the resenvoir 40 is a hydraulic piston displacement chamber 42 and next to the chamber 42 is a hydraulic fluid collection and reverse ow chamber 44. |Ilhe deep well oil receiving chamber, or part of the tubular member 16 adjacent the holes 24, is designated by the numeral 46.

A pump 48, driven by an electric motor S01, is supported in the chamber 33 and is provided with an input and an output.

A two-discharge passage outlet valve 52 is supported within the reservoir chamber 40. A conduit 54 connects the input side of the valve 52 to the output of the pump `48, as shown most clearly in FIGURE 2.

The input side of the pump 48 is connected by a conduit 56, having a strainer 58 on the upper end thereof, to the inteor of the reservoir chamber 40.

A piston 60 is mounted in the displacement chamber 42 for reciprocatory movement and it is secured to one end of a piston rod 62 extending slidably through the displacent chamber 42, through the fluid collection chamber 44, and the oil-receiving chamber 46 and into the eduction tube 22. The other end of the piston rod 62 remote from the piston 60' is iixedly secured to the piston 64 of the pump assembly 28, the piston 64 carrying the valve seat 30 and the ball valve 32.

Means is provided by the present invention xedly carried by the portion of the piston rod 62 within the collection chamber 44 and operable to engage openable and closable valves located in the collection chamber 44 responsive to reciprocatory movement of the piston 60 to sequentially actuate the pumping means or pump assembly 28 to draw oil from the oil-receiving chamber 46 through the eduction tube 22 to a point of collection loacted on the earth surface adjacent the deep Well.

Specifically, this means includes a collar 66 carried on the piston rod 62 intermediate the ends thereof and engageable, at each end of its stroke, with either a plunger 68 or a plunger 70 of two valve assemblies 72 and 74, respectively, identical in all respects but Ifacing each other.

As the valve assemblies 72 and 74 are identical,l they will be described with reference to the assembly 74 in FIGURE 2.

The assembly 74 consists in a cylinder 76 having slidable therein a cylindrical element V78 having Ka Vstraightthrough passage 80 and another passage 82 connecting one side with the free end of the element 78.V VThe cylinder 76 has one end open and the other end closed, Vas. at S4 and the plunger 70 extends through the closed end 84 and is biased outwardly of the cylinder 76 by means 'of a coil spring 86 circumposed about the plunger 70.

With reference to FIGURE 2, a iirst conduit means, as at 88, connects one of the discharge passages of the valve 52 to the chamber 42 on one side of the piston 60. A Ibranch conduit 90 connects the conduit 88 with the cylinder 76 on one side of the latter.

The other discharge passage of the valve 52 is connected by the conduit 92 to the piston displacement chamber 42 on the other side of the piston 60,V as in FIGURE 2. A branch conduit 94 connects the conduit 92 to the cylinder 76 of the valve assembly 72 on one side of the latter. Y

The side of the cylinder 76 opposite the conduit 90 is connected by a conduit 96 to a plunger chamber 106 adjacent to and spaced from the rotary valve 52. Similarly, the -side of the cylinder of the valve'assembly 72 is connected by a conduit 100 to the interior of another plunger chamber 102 mounted in lateral spaced relation with respect to the plunger chamber V106. lTheV plunger chamber 102 is formed in `a block 104 which is supported on' the inner walls of the tubular member .16 within the chamber 40. The block 104 has the other plunger chamber 106 arranged in opposed parallel spaced relation with respect to the chamber 1102. Y Y

Pistons or plungers 108 and 110 are mounted in the chambers 102 and 106, respectively, for sliding movement therealong. They have their adjacent one ends exteriorly of the block 104 and pivotally connected to opposed ends of a valve oper-ating lever 112.

The leverV 1'12 is mounted intermedi-ate itsends upon the projecting end portion of a stem y114 (FIGURE 1l) valve 52. In FIGURES 2 and 6, the valve element 116 is shown in a position in which fluid flows under pressure to the underside of theV piston 60 and at the same time to the valve assembly 74 which is normally closed. Fluid flowing into the cham-ber 42 on the lower side of the piston 60 eiects movement upwardly on the piston 60 until the collar 66 engages the free end of the plunger 70. This eltects, lagainst compression of the spring 86, the movement of the cylinder element 78 to the position in which the passage 80 connects the conduit 90 with the conduit 96. Hydraulic duid-under pressure now ows through the conduit 96 to the plunger chamber 106, effecting upward movement of the plunger 1110 to shift the valve lever 112 to the position shown in FIGURE 4.

With the shifting of the valve lever 112 to the position shown in FGURE 4, huid now flows from the conduit 54 to the conduit 92 :and thence upwardly to the passage 138 I in the disc 136 and, simultaneously, through the conduit 94 lto the valve assembly 72. As shown in FIGURE 7, the discharge passage 122 is now connected to the valve outlet 126 and fluid tiowing into the upper half of the chamber 42 forces the piston 60 downwardly, exhausts the fluid below the piston 60 through the passage 134 and elements 73 in the valve assemblies 72 and 74 prevents pressure in the chamber 44 from effecting movement of the valves from their normally closed position. Also, any accumulation of hydraulic iluid in the chamber 44 at the lower end thereof is automatically drained back to the reservoir chamber when pressure in the chamber which carries a leaf valverelement Y116 mounted for limited rotation in a bore 118 provided in the valve 52.

As shown most clearly in FIGURES 6 and 7, in one position the valve element V116 connects the `valve inlet 120 to one of the discharge passages y122 (FIGURE 6) While connecting the other discharge passage 124 to the valve outlet 126. Y

In the other position, as shown in FIGURE 7, the valve element 116 connects the inlet 120 to the discharge passage 124, while connecting the discharge-passage 122 to the outlet 126.

The chamber 38 is dened by the bottom plate 18 and a sealing ymember 128 spaced above the pump 48 and provided with` gland assemblies 130 surrounding the inlet or input Iand output side of the pump 4S. The chamber 40 is defined by the sealing member 128 and a disc 132 having apassage 134 connected vin communication with the conduit S8. The chamber 42'is defined by the disc 132 and another disc 136 also having a passage 138 which is connected in communication with the conduit 92. Y s Y f Y The chamber 44 is defined by the disc 136 and a sealing plug 137. The chamber 46 is deiined by the plug 137 and the top plate 20. Y

As shown most clearly in FIGURES 2 and 4, the conduit 96 is connected to the bottom of the plunger chamber 106 and the conduit 100 is connected to the bottom of the plunger chamber 102.

An oilproof and waterproof cable :142 extends from the motor to the surface of the earth adjacent the well and serves to energize the motor 50 forY operating the pump 48. Y Y

In use, the motor S0 drives the pump 48 to supply hydraulic tiuid under high pressure to the inlet side of the 44 and accumulation of oil is suthcient to reach bottom of the valve assembly 72.

What is claimed is:

1. In a deep well submersible pump unit, a closed `hollow member and an oil eduction tube surmounting said member and carried by the latter, said closed hollow member being subdivided into a plurality of chambers superimposed one upon the other, the lowermost chamber constituting a support chamber, the chamber next to the support chamber constituting a hydraulic uid reservoir, the chamber next to the reservoir constituting a hydraulic piston displacement chamber, the chamber next to the displacement chamber constituting a hydraulic the open tluid collection land reverse ll-ow chamber, and the chamber next to the collection chamber constituting the deep well oil-receiving chamber, a pump provided with an input and an 4output xedly positioned within said support chamber, 1a two-discharge passage outlet valve in said reservoir, the input of said pump being in communication with the interior of said reservoir, 'a piston mounted in said displacement chamber for reciprocatory movement, a piston rod having one end secured to said p1ston and extending slidably through said displacement, fluid collection, and oil-receiving chambers and into said eduction tube and having the other end adjacent to and spaced inwardly from the lower end of said eduction tube, pumping means disposed Within said eduction tube and carried by the other end of said piston rod, a iirst conduit means connecting one of the discharge passages of said valve to said piston chamber on one side of said piston, ta second conduit means connecting the other of the discharge passages to said piston chamber on the other side of said piston, the oil-receiving chamber being provided with ingress means for admission of deep well oil therethrough, and means ixedly carried by the portion` of said piston rod Within said collection chamber and operable responsive to reciprocatory movement of said piston to sequentially actuate said pumping means to draw oil from the oil-receiving chamber through the eduction tube to a point of collection located on the earth surface adjacent the deep Well.

2. In a deep well submersible pump unit, a closed hollow member and an oil eduction tube surmounting said member and carried by the latter, said closed hollow member being subdivided into a plurality of chambers superimposed one upon the other, the lowermost chamber constituting a support chamber, the chamber next to the support chamber constituting a hydraulic iiuid reservoir, the chamber next to the reservoir constituting a hydraulic piston displacement chamber, the chamber next to the displacement chamber constituting a hydraulic uid collection and reverse ow chamber, and the chamber next to the collection chamber constituting the deep Well oil-receiving chamber, a pump provided with an input and an output xedly positioned within said support chamber, a two-discharge passage outlet valve in said reservoir, the input of said pump being in communication with the interior of said reservoir, a piston mounted in said displacement chamber for reciprocatory movement, a piston rod having one end secured to said piston and extending slidably through said displacement, uid collection, and oil-receiving chambers and into said eduction tube and having the other end adjacent to and spaced inwardly from the lower end of said eduction tube, pumping means disposed Within said eduction tube Iand carried by the other end of said piston' rod, a 'lrst conduit means connecting one of the discharge passages of said valve to said piston chamber on one side of said piston, a second conduit means connecting the other of lthe discharge passages to said piston chamber on the other side of said piston, the oil-receiving chamber being provided with ingress means for admission of deep Well oil therethrough, and means embodying a collar xedly carried by the portion of said piston rod Within said collection chamber and operable to engage openable and closable valves located in said collection chamber and connected to said first and second conduit means respectively responsive to reciprocatory movement of said piston to sequentially actuate said pumping means to draw oil from the oil-receiving chamber through the eduction tube to a point of collection located on the earth surface adjacent the deep well.

References Cited in the tile of this patent UNITED STATES PATENTS 2,220,334 Holmberg Nov. 5, 1940 2,245,501 Richardson June 10, 1941 2,622,535 Carpenter Dec. 23, 1952 2,697,985 Carlisle Dec. 28, 1954

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2220334 *Mar 21, 1938Nov 5, 1940Smith Corp A ODeep well pump
US2245501 *Sep 25, 1937Jun 10, 1941Richardson William CReciprocating pump
US2622535 *Jan 2, 1951Dec 23, 1952Phillips Petroleum CoGas pressure operated oil well pump
US2697985 *Dec 7, 1951Dec 28, 1954Charles C CarlisleWell pump and operating mechanism therefor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4120612 *Jan 22, 1976Oct 17, 1978Brown Kenard DAutomatic pump for deep wells
US4302158 *Oct 16, 1978Nov 24, 1981Brown Kenard DAutomatic pump for deep wells
US4406598 *Oct 14, 1980Sep 27, 1983Walling John RLong stroke, double acting pump
Classifications
U.S. Classification417/403, 91/306, 417/390
International ClassificationF04B47/04
Cooperative ClassificationF04B47/04
European ClassificationF04B47/04