US1286272A - Pump. - Google Patents

Description

V. H. FRANCIS. 'PumP. APPLlCATlbN FILED JUNE 23. I917.

Patented Dec. 3, 1918.

v my

VINCENT r1. FnANoIs, OFDRUMRIGHT, OKLAHOMA, ssIeNon 'ro ERICK-REID sUrrLY COMPA Y, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PUMP.

inseam.

To all whom may concern Be it known that I, VINOENT H. FRANoIs,

a citizen of theUnited States, and resident 3 of Drumright,in the county of Greek and State of Oklahoma, have invented a new and useful Improvement-in Pumps; and I do hereby declare the following to be a full,

clear,.and exact description thereof. My invention relates to pumps for 011 or like wells, and has particular reference to a type of pump such as described in my application .for Letters. Patent Serial. No.

17 6,555, filed of evendate herewith.

The present invention aims, to improve that type of pump by providin a structure which, has

greater. pumping e ciency, and

in which the reciprocating pump piston is relieved of'the'dead weight of the column of fluid in the well tubing. I c

The invention consists in thejno-vel construction as hereinafter described and claimed.

In the.accompanying drawing, Figure 1 is a longitudinalsectional View of my invention, and Fig. 2 is an enlarged sectional view of one of the check valves employed. The numeral 2 indicates a portion of the well tubing to which my improved pump isattached, the location of the pump with reference toits position in, the well being the same as in the standard arrangement for pumping. c c p The pump comprises thebarrel or cylinder 3 which may be the standard working barrel ofa regular pumping outfit, having the connectlons as hereinafter described.

I The barrel has the anchor tubing and strainer 4, lower or standing valve 5, and traveling valve or valved piston 6. The piston is adapted for reciprocation by either a wire rope or rod connections to any suitable pumping apparatus.

To connect the piston to the wire rope or pumpingfrods I employ a tube 7 which is secured to the pistonvalve 8 and which passes through a stuffing box 9 in the upper end of theworking barrel. To the opposite end of this tube is secured a check valve 7 the purposeof which will hereinafter appear, and a valve rod 7 secured to this valve, as with the common traveling Specification 01 Letters Patent.

stroke, and passing through box.

valve, completes the connection to the pumping cableor rods. A

The valved piston of this invention differs from the valved piston or traveling valve commonly employed in oil well pumps,

open for fluid communication to, the working barrel. Fluid in this instance, which is. displaced by the piston on the down this valve, entersdirectlyintothe tube 7 and is conveyed to the well tubing above the stufling By this arrangement provision is made for displacing fluid through the piston by reason of the stuffing box 9 the piston is relievedof the direct overhead load or dead weight of the column of fluid in the well tubing. Als0,the arrangement permits of more rapid reciprocation of thepiston with less wear of parts, as the tube 7 acts to gulde the piston true in the working barrel.

The stufling box 9 which closes the end of the Working barrel forms a chamber 3 above the. piston, and the piston by reason of its incased valve structure, acts in effect, in this chamber, as a solid ornon-valved piston, and in its descent creates a suction in this chamber. To utilize this portion of the workingbarrel for pumping displacement an intake connection of fluidsupplyis provided. c

The intakeconnection preferably is of a by-pass pipe 10, communicating as at 11 to the chamber 3 and at 12 with the anchor tubing beneath the strainer openings. A

downwardly seating check valve 13 in the bypass pipe closes communication between ferto employ, as by its attenuated form Patented Dec.3,l918. Application filed June 23, 1917. Serial mums.

into the well, tubing and at the same time with the source I of pipe sections connected by a c The valve forms the I am enabled to build a very compact structure. I do not however, wish to limit my invention to the employment of any particular form of check-valve in the by-pass lines. Valve 8 of the piston 6 is also of a type similar to the by-pass check valves, and it is obvious that other forms of incased check-valves may be used at this point.

A by-pass pipe connection 15 is provided for conveying fluid from the chamber 3? to the well tubing on the up-stroke of the piston, this connection "communicating with the chamber at the port 11, which is at a point above the maximum upper position of the piston, and preferably the pipe is a continuation of the bypass pipe 10, and terminates in the well tubing above the stufling box as at 16. This connection is also provided with a downwardly seating checkvalve 17 and slip-joint 18.

The above described structure constitutes that portion of my improved pump which is devised to supply fluid tothe barrel above the piston for pumping displacement bythe piston on its lip-stroke.

Both movements of the piston in this invention are utilized for drawing fluid into the barrel and for displacing the fluid. I accomplish this double pumping action by providing means for supplying the barrel above the piston with fluid as above described, and also byproviding means for supplying fluid to the barrel beneath the piston simultaneous with the discharge of the fluid from abovethe piston, the up-stroke of the piston drawing fluid into the barrel through the standing valve 5 as common to all pumps of this general'character.

In addition to the intake valve 5, I employ an intake pipe 20, preferably arranged as a bypass similar in structure. and arrangement to the by-pass pipe 10, and having its connection to the anchor tubing at 21 and to the barrel at This pipe also is provided with a downwardly seating check-valve 23 and slip-joint 24. The main purpose of this intake connection is to provide for a greater intake area for fluid being drawn into the barrel on theup-stroke of the piston, and provides means for supplying the barrel with fluid in case of failure of valve 5 and vice versa', the two valves lessening the liability of non-flow due to sand clogging one or" these valves. On the down-stroke of the piston fluid drawn into the barrel on the upstroke is displaced through the valve opening in the piston and is conveyed by 'tube 7 to the well tubing above the stufling box. Ordinarily, compression in the barrel beneath the piston does not permit of rapid descent of the piston, the fluid. having only a single escape opening, namely, the valve opening of the piston, and in order to provide for a more rapid descent of the piston I provide an additional outlet for the escape of the fluid, in this instance utilizing the port 22. A pipe 26 having the downwardly seating check-valve 26 and slip joint 26", preferably a continuation of the pipe 20, connects as at 27 to the Well tubing above the stufling box and to the inlet port 22 of the working barrel. Although I have described a preferred form of structure, it will be apparent without specific illustration that various other structural arrangements may be made which function in a similar manner. For instance, each of the by-pass connections maybe formed diflerently, and be so arranged as to have separate port connections with the barrel, and these by-passes may also be formed integrally with the barrel, such as in a casting, without departing from the spirit of my invention.

In the drawings I have shown a check valve as forming the connection between the valve-rod and tube 7 obviously this connection need not be a valve, as the function of the connection is. only to provide communi- 'cation for the fluid to the well tubing from tube 7 and means for attaching the cable, though by employing a check-valve at this point, there is an advantage, the valve providing additional means to the piston valve in closing communication between the well tabing and the lower chamber of the working barrel, the two valves lessening the liamay to' leakage due to sand.

In the operation of my improved pump, on theup-stroke of the piston, fluid is drawn into the chamber of the working barrel beneath the piston through standing valve 5 and port '22, and simultaneous with the upward movement, fluid drawn into chamber 3 by the down-stroke of the piston is forced from this chamber through port 11 and bypass 15 into the well tubing above the stufl' ing box. During this movement of the piston, valve 26 remains closed.

Downward movement of the piston displaces the fluid in the lower chamber of the working barrel, the fluid escaping under pressure of the descending piston through the valve opening of the piston and tube 7, and by port 22 and by-pass 15 to the well tubing. Check- valves 5, 23 and 13 remaining closed during said movement, and checkvalve 26 opening, allowing fluid. to be drawn into chamber 3 by suction of the piston.

It will be seen that as the piston is relieved of the direct overhead load of the column of fluid in the well tubing, by employment of the stuffing box 9, the load on the piston is considerably reduced, and corresponds only to the load produced in displacin fluid from chamber 3 plus the triotion OI working parts, and pressure in the by-pass 15. By this arrangement the pumping cable and its connections are relieved of Y load of the column of fluid.

It will also be seen from the foregoing description thatI have provided a pum in whichfluid is drawn into the working arrel and displaced therefrom simultaneously ment, as distinguished from my former application. The structure provides for greater volume of flow per pumping hour, and may be operated at higher speed than common with pumps of this general character. The structure is simple and may readily be applied to the regular pumping outfits. What I claim is: i 1. In a pump for oil or other deep wells,

the combination with a pumping barrel,

of a single fluid-displacing piston therein, a standing valve for admission of fluid, and auxiliary means for-supplying the barrel with fluid from the source of supply simultaneously with pumping displacement of the fluid by the piston in either direction of its movement.

2. In a pump for oil or other deep wells, the combination with a pumping barrel, of a single fluid-displacing piston therein, a standing valve for admission of fluid, and auxiliary means for supplying the barrel with fluid from the source of supply simultaneously with pumping displacement of the fluid by the piston in either direction of its movement, controlled by the movement of the piston.

3. In a pump for Oll or other deep wells,

the combination with a pumping barrel, of I a single fluid-displacing piston therein, a standing valve in the lower end of the barrel for admission of fluid, and auxiliary means for supplying the barrel with fluid from the source of supply alternately to opposite sides of the piston.

4;. In a pump for oil or other deep wells, the combination with a pumping barrel, of a single fluidjedisplacing piston therein, a

standing valve in the lower end of the barrel I for admission of fluid, and auxiliary means for supplying the barrel with fluid from the source of supply alternately to opposite sides of the piston, simultaneously with displacement of the fluid from the barrel by the piston.

5. In a pump for oil or other deep wells,

the combination with a pumping barrel having a single fluid-displacing piston and including a standing valve for admission of fluid, of a plurality of auxiliary intakes for supplying fluid to the barrel from the source of supply for pumping displacement from the barrel by the piston in either direction of its movement.

6. In a pump for oil or other deep wells, the combination with a pumping barrel having a single fluid-displacing piston and including a standing valve for admission of fluid,

of a plurality of auxiliary intakes for supplying fluid to the barrel from the source of supply simultaneously with displacement :of fluid, from the barrel by the piston controlled by the movement of the piston. by the piston in either direction or its move- 7. A pump for oil or other deep Wells comprising a working barrel having a standing valve in the lower endthereof for admission of fluid, a stuffingbox in the upper end of the barrel, a single piston in the barrel, a piston rod connected to said piston and operable through said stuffing-box, a plurality of auxiliary fluid intakes from the source of supply to the barrel above and beneath the piston, and means for by-passing fluid from above and beneath the piston around the stuffing-box to the well tubing.

, 8. A pump for oil or other deep wells comprising a working-barrel having a standing valve in the lower end thereof for ad mission of fluid, a stufling-box in the upper from the barrel.

9.1L pump for oil or other. deep, wells comprising a working-barrel having a standing valve in the lower end thereoffor admission of fluid, a stufling-box in the upper end of the barrel, a single piston in the barrel, a piston-rod connected to said piston and operable through said stufiing-box, an auxiliary intake for fluid comprising a passage I having independent communication with the source of fluid supply and terminating inthe well-tubing abovethestuflingbox and communicating with the barrel between the piston and the standing valve and adapted for admission and for exhaust of fluid alternately to and from the barrel, and a second like auxiliary fluid passage having a port for admission of fluid to and for exhaust of fluid from the barrel at a point between the piston and the stuffing-box.

10. A pump for oil or other deep wells comprising aworking barrel having a stand.- ing-valve in the'lower end thereof for admission of fluid, a stuffing-box in the upper end of the barrel, a single piston in the barrel, a piston-rod connected to said piston and operable through said stufling-box, an auxiliary intake for fluid comprising a passage having independent communication with the source of fluid supply and terminat ing in the well-tubing above the stuiflng-box and having a port communicating with the barrel between the piston and the standing valve adapted for admission and for eX- haust of fluid alternately to and from the barrel, a second like auxiliary fluid passage having a port for admission of fluid to and for exhaust of fluid from the barrel at a point between the piston and the stuflingbox, and means interiorly of the barrel for conveying a portion of the fluid from the 9 barrel beneath the piston to the well-tubing above the stufling-box.

In testimony whereof, I the said VINCENT H. FRANCIS, have hereunto set my hand.

VINCENT H. FRANCIS. Witnesses:

GRACE HooToN, MABEL HERMES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

Images