US1284642A - Pump. - Google Patents

Description

V. H. FRANCIS.

PUMP.

APPLICATION FILED IuNE 2a. I9I7.

Patent-.ed Nov. 12, 1918.

INvIsN'roR UNITED STATES PATENT OFFICE.

VINCENTl H. FRANCIS, or` DRUMRIGHT, OKLAHOMA, AssrcrNoR` To VLRIcK-REIDV SUPPLY COMPANY, or PITTSBURGH, PENNSYLVANIA, A CORPORATION. or

PENNSYLVANIA.

PUMP.

To yall lwjwm z't may concern:

. Be it known that I, VINCENT H. FRANCIS, a citizen of the United States, and resident ofl Drumright, in the county of Creek and State of Oklahoma, have invented a new; and useful Improvementl in Pumpsyand I do herebyy declare the. following to be a full, clear, and eXact description thereof.

My invention relates to` pumps for oil; or like wells, and has-particular reference ,to a type of pumpsuchl asdescribed in my application for Letters Patent, Serial No. 176,55led of even datek herewith.

-In the present invention Il provide a double-acting pump oiE the samev general character in which the pumped supply of fluid tothe chamber vabove the piston, is not dependent on suction of the piston onits downward movement, the arrangcinentgfoat thev structure permitting more rapid operation which gives they inventionV special advantage for use inpumping slow-flowing wells.

In theaccompanying drawing, Figurel is a longitudinal sectional view of my improved' pump; and Fig. 2 is an `enlarged longitudinal' sectional vienT of one oft-the check-valves employed.

My improved pump comprises the working-barrel or pumping-cylinder 3 having at its lower end an anchor tube and strainerv 4,. and having at its upper end4 the stufiing-box 5.

The pump is connected to the well-tubing (not shown) preferably by a tubelikemember 6 which is coupled to the well-tubing and connects to the working-barrel by a coupling 7, said coupling forming also a seat for supporting the stuting-box. The workingbarrel has the standing valve 8 and the travcling-valve or piston 9. The valve and the piston being preferably of standard form and arranged to function in a manner common to ordinary pumping outits, the piston A in this instance being connected to the operating cable or rods (not shown) byl a valve-r0d 10-which passes through the stuifing-box 5.

Admission'of iuid to the working-barrel beneath the piston is by valve 8y and-by a by-pass pipe connection 11. This by-pass connects with the anchortube below the strainer openings at 1 1al and to the workingbar-rel" above the valve 8 at `11", a down wardly-seating check 12 preventing return iiow of fluid through this pipe. This arspecification f Letters Patent. patented-1v0v, 12,-1918,

Application ii1edJune23, 1917. I

SeraLNo. 176,155.7.

rangement of the byfpass afordsraddtiQIlaL of the byfpassto the anchortube iswell to-y ward thevbottom of saiditubeandlprovides forv supply of the fluid.tofthelchamber s o long as there isfiiuidinthewell.

The iuid escape openingsflom Ohechamber beneath the piston comprise thevalve opening of'` piston-valve 9a, and thel inlet opening 1lb ofthe xby-pass '11.

, Anextension llfof` the bye-pass 11: communicates with? the opening 11" in .billet-barrel and with the ,connectingmember 6, of the Well-tubing and has l the downwardly-,seating check-valve 18 which; opens on they downward movement of the piston.

Chamber 3a communicates` by a byfpass pipe14 with the source Offluid supply,A andl an extension 14a ofthis pipe, connects the chamber with the well-f tiubing, check-valves 15. and: 16l controlling flowl of fluidl `through these pipes, respectively.

The operation ofy thepumpis asf-follows: Downwardl movement, of theV piston :forces fluid from the barrel beneath they piston through the opening 1'1h into-theI ,byfpass pipe 11, valve 12 ofv theby-pass 11 closing due to the pressure of fluidcreated by the descending piston, ythe f uidpassing through pipe 11 into the extension 6 which communicates with the well-tubing. During the downward movement of thepiston a portion ofthe fluid beneath the piston passes through the valve. 9? and into the chamber 8a of' theworking-barrelV above the piston, and in this manner the piston is V, relieved of compression to a considerableextent on its downward stroke, while at the same `time the valve 9a providesy means for supplying the chamber 3@ with fluidi or'displacement by the piston omitsupward movement.

The function-of the iby-pass 14, isto supply fluid to chamber 3a' for pumping-displacement bythe upstroke'. of the, piston when the'` head pressure offthewell'issuch as to cause the Huid to rise1 or standin this pipe so as to communicate with the chamber through its opening 141.

Upward movement: of the piston displaces the Huid from the chamber 3a through opening 14b and forces it throughthe extension 141- into the connection 6, the check-valve 15 of the pipe 14 closing due to the fluid pressure in the pipe l-l caused by the ascending piston, check-valve 16 preventing return of fluid to the chamber at the completion of the upstrole.

With the structure here shown and described, it will be seen that I have provided a double acting pump having a single piston in which fluid from the source is conveyed to the barrel at opposite sides of the piston by passages which are independent of' the admission valve 8, which provide for large capacity in pumping a fast flowing well, and which provide for a supply of fluid to the barrel for pumping displacement by the piston in either direction of its movement even when fluid in the well is too shallow to be eliected by suction of the piston through the standing valve 8.

jWhat l claim is:

l. A pump for cil or other deep wells comprising a pump cylinder, a single piston in the cylinder for suction and for expulsion of fluid to and therefrom, respectively, a plurality of inlets each having separate source of communication with the source of fluid supply and communicating with the cylinder at opposite sides of the piston, a phirality of outlets, and means for transferring a portion of the fluid of the cylinder at one side of the piston to the opposite side for displacement from the cylinder by movement of the piston.

2. A pump for oil or other deep wells comprising a pump cylinder, a single piston in the cylinder for suction and for expulsion of fluid to and therefrom, respectively, a plurality of inlets each having separate source or" communication with the source of iluid supply and communicating with the cylinder at opposite sides of the piston, a plurality of outlets. and a passage for fluid interiorly of the cylinder forming communication between said inlets l.from opposite sides of the piston.

3. A pump for oil or other deep wells comprising a pumping cylinder, a single piston for simultaneous suction and expulsion of i'iuid from the cylinder, a plurality of inlets having separate sources of communication with the source of fluid supply, a plurality of outlets, said inlets and outlets being valve-controlled, a valved connection for the fluid oiv the cylinder communicating at opposite sides of the piston through which a portion of the fiuid at one side of the piston is transferred to the opposite side for expulsion from the cylinder by movement of' the piston.

4;. A pump for oil or other deep wells comprising a pumping cylinder, a single piston for simultaneous suction and expulnannesz sion of fluid to and from the cylinder, rcspectively, a plurality of inlets each having separate source of communication with the source of fluid supply for supplying fluid to the cylinder at one side of the piston, said inlets including a valve at one end of the cylinder, a fluid connection communieating with the source of fluid supply at the opposite side of the piston, said inlets being valve-controlled, valve-controlled outlets, and a valve-controlled passage interiorly of the cylinder for conveying fluid in the cylinder from one side of the piston to the opposite side for expulsion from the cylinder by movement of the piston.

5. A pump for oil or other fluids comprising a pumping cylinder closed at one end by a stuffing-box and having a valvecontrolled opening in the opposite end, a single piston operable in the cylinder for suction and for expulsion of fluid to and therefrom, respectively, the piston rod of the piston operating through said stuifingboX, a plurality of inlets for the cylinder each having separate source of communication with the source of fluid supply, said inlets including the valve in the end of the cylinder, a plurality of outlet connections, said inlets and said outlets intercommunieating and being valve-controlled, and a communicating passage between the oppositev chambers of the cylinder formed by the piston adapted for conveying fluid for eX- pulsion from one of the chambers by movement of the piston.

6. A pump for oil or other fluids comprising a pumping cylinder closed. at one end by a stuffing-box and having a valveclosed opposite end, a single piston in the cylinder operated by a piston-rod passing through said stuliing-box, fluid inlets comprising the valve in the cylinder and bypass connections each having separate communication with the source of fluid supply, and communicating with the cylinder at opposite sides of the piston, fluid outlets comprising pipe connections communicating with said inlets.y said inlets and outlets being valve controlled operable by movement of the piston, said piston having a passage for conveying fluid from one side of the piston to the other on movement of the piston in one direction for displacement by thrust of the piston in the opposite direction, and a valve controlling said passage.

In testimony whereof l, the said VrNCnN'r H. FRANCIS, have hereunto set my hand.

V. H. FRANClS.

Witnesses:

GRACE Hoo'ron, MABEL HERMES.

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

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