US2105975A

US2105975A - Well pump

Info

Publication number: US2105975A
Application number: US69368A
Authority: US
Inventors: Frank C Kniss; Richard N Vickers
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-03-17
Filing date: 1936-03-17
Publication date: 1938-01-18
Anticipated expiration: 1955-01-18

Description

` Jan. 18, 1938.

F. C. KNISS ET AL.

WELL PUMP Filed March 17, 1936 Patented Jan. 18, 1 938 UNITED STATES WELL PUMP' Frank C. Kniss and Richard N. Vickers, Smackover, Ark.

Application March 17, 1936, Serial No. 69,368

6 Claims.

This invention relates to an improved well pump and more particularly to a pump for use in deep weils. One object of the invention is toprovide an improved valve structure adapted to be mounted in the bottom of a well at the lower end of the well tubing where it will be immersed in oil or other liquid and serve very eiectively to permit the oil to be forced upwardly through the well tubing and out at the upper end or top of the well.

Another object of the invention is to provide a valve structure wherein the valve casing which is carried at the lower end of the Well tube is formed with passages or ducts through which a large quantity of oil may be forced during reciprocation of the pump. It will thus be seen thatwhen this improved valve is in use, large quantities of oil may be forced upwardly through the well tube or casing and a good flow of oil assured.

Another object of the invention is to provide lan improved core for the valve casing which carries valve balls for controlling' directional flow oi' oil or other liquid through the core and valve casing and to further provide the core with sealing members having close contacting engagement with walls of the bore of the valve casing so that during operation of the pump, oil will follow a predetermined path and enter and leave the valve casing correctly.

Another object of the invention is to so construct the core of the valve that it will be rmly held in place within the valve casing but may be withdrawn as a unit when cleaning, repairs or replacements are necessary.

The invention is illustrated in the accompanying drawing, wherein- Figure 1 is a sectional view taken longitudinally through the improved valve.

Figure 2 is a sectional view taken transversely through Figure 1 along the line 2-2.

Figure 3 is a sectional view taken along the line 3-4 of Figure 1.

Figure 4 is a sectional view taken transversely through Figure 1 along the line 4-4.

The standing valve which is shown in longitudinal section in Figure l has a cylindrical casing I and may be of any length and diameter desired. 'I'he bore 2 of the casing is of an even diameter throughout substantially the entire length of the casing but has its upper end portion enlarged and internally threaded, as shown at 3, to provide a socket by means of which the standing valve may be attached at the lower end of a well tube in the usual manner. It will thus be seen that the standing valve will be -mounted at the lower end of the well tube or casing and will be immersed in a body of oil at the bottom of a well.

Ducts

4 and 5 are formed longitudinally of the valve casing I in opposed portions of walls of the casing, as shown clearly in Figures 2 and 3, and referring to Figure l it will be seen that these ducts are oil-set longitudinally of the valve casing, the duct 4 extending downwardly for approximately half itslength below the lower end of the duct 5 and at its lower end having an inlet port 6 communicating with the bore 2 in spaced relation to the lower end thereof. 'I'he upper end of the duct 4 is also formed with a port I communicating with the bore 2 substantlally midway the

ports

8 and 9 of upper and lower ends of the duct 5 and attention is called to the fact that the port 8 at the upper end of the duct or passage 5 communicates with the bore 2 at the bottom of the socket 3. This portion I of the bore 2 with which the port 8 communicates is enlarged diametrically and provides a chamber into which oil passes from the duct or passage and then upwardly through the valve casing to which the standing valve is attached.

'I'he core of the valve fits snugly within the bore 2 of the casing I and extends longitudinally therein for substantially its entire length. This core is formed of sections and has an upper section II, a lower section I2 and a series of intermediate sections connected in end to end engagement with the end section and to each other. The upper section II is of tubular formation and has its upper end portion externally threaded to form a neck I3 of a diameter to be screwed into an internally threaded socket I4 formed at the lower end of a coupling I5 which connects the core of the'standing valve with a vertically disposed reciprocating pump I6 having a construction substantially corresponding to that disclosed in Patent No. 1,807,741, issued June 2, 1931. At the base or lower end of the neck I3 an outstanding collar or annular flange II is formed about the section II. This flange serves not only as an abutment for the lower end of the socket I4 to insure a tight llt but also constitutes an outstanding annular support which rests upon the beveled face or seat I8 at the bottom of the chamber I0 and serves to maintain the core in its proper position in the valve casing and prevent it from sliding downwardly beyond the position shown in Figure 1. Packing rings I9, which are formed of compressible material, fit snugly about the section II under the flange Il with'a metal ring 20 between them and when the section 2| of the core is screwed upon the threaded lower' end portion 22 of the section Il, the packingrings I9 will be compressed and thus-cause them to have tight fit against walls of the bore 2 between the chamber I0 and the port 1 at the upper end ofthe duct 4. The section 2| which is disposed at the level of the upper end of the duct 4 is in the form of a cage having side openings 23 so that communication will be established between the duct 4 and the bore or passage 24 of the upper section l and oil may move through the duct 4 and the passage 24 in a manner to be hereinafter specifically set forth when the reciprocating pump is in operation.

The upper one of the intermediate sections, which is indicated by the numeral 25, has a solid upper portion which is screwed into the lower end of the cage or coupling 2| and the lower portion 23 of this intermediate section is diametrically enlarged and formed hollow to provide a cage 21 having side openings or passages 25 disposed opposite the lower end of the duct 5 in registering relation to its lowerport 9. Packing rings 29 which are spaced from each other by a metal ring 30, fit about the solid upper portion of the section 25 between the circumferentially extending shoulder formed by the upper end of the enlarged lower portion 26 of the section and the lower end of the coupling 2|. These packing rings are compressed when the section 25 is screwed into the lower end of the cage or coupling 2| and have tightnfltting contact with walls of the bore 2 between the port 1 at the upper end of the duct 4 and the port 9 at the lower end of the duct 5. It will thus be seen that oil cannot pass through the bore 2 between the port 1 and the port 9. The cage 25 constitutes a guard or housing for a valve ball 3| which fits loosely within the cage and is movable into and out of engagement with the valve seat-32 which is in the form of a nipple and mounted in the lower end portion of the cage where it is firmly held in place when the externally threaded upper end portion 33 of the section 34 is screwed into the internally threaded lower end portion of the section 25. 'I'his section 34 is of tubular formation and has its intermediate portion externally thickened to form an outstanding annular shoulder 35 serving as an abutment for thevupper one of a pair of sealing rings 36 which t about the section 34 with a metal ring 31 between them. The packing rings 35 are compressed when the cage or section 39 is screwed tightly upon the threaded lower end of the section 34 and have tight con- .m tacting engagement with walls of the bore 2 to prevent flow of oil throughthis portion of the bore 2 between the port 5 at the lower end of the duct 4 and the port 9 at the lower end of the duct 5. Since the section 34 is of tubular formation, oil may flow through itat certain periods during operation of the pump. This cage 33 has its lower end in threaded engagement with the upper end of the lower section I2 of the core and within the lower end portion of the section 39 is mounted a valve seat 39 which has the form of a nipple so that oil may flow upwardly through the bore 49 of the section I2 and through the valve seat 39 and the cage to enter the lower end of the duct 4. The valve ball 4| which fits loosely in the cage 39 normally rests upon thevalveseat 39 but may be moved upwardly vto a raised position in which it bears against the seat 42 and permit oil to flow from the cage through its side port 43 and enter the duct 4 through the port 6 at the lower end thereof.

Packinglrings 44 having a metal ring 45 between them ilt about the lower section |2 and maintained in place thereon by la sleeve nut 43 which when screwed into place causes the packing rings to be expanded and have tight tting engagement with walls of the bore 2. Therefore. the portion of the bore 2 between the lower end of the duct 4 andthe lower end of the valve casing will be sealed and oil prevented from flowing upwardly except through the bore 43 of the section I2.

When this improved pump is in use the valve casing is connected with the lower end ofthe well tubing or casing so that, it extends down into thebody of oil at the bottom of a well. The pump rod is disposed vertically in the well in the usual manner with its lower end connected with the reciprocating pump I5 and its upper end operatively connected with the usual walking beam so that reciprocating motion will be imparted to the pump. As the reciprocating portion of the pump is drawn upwardly, oil is sucked upwardly into the standing valve and passes upwardly through the bore 40 of the lower section I2. This moving column of oil unseats the valve upwardly seats against the valve seat 42 so that the bore 41 of the section 34 is substantially closed and,'therefore, the valve ball 3| remains in its lowered position in which it is seated upon the valve seat 32 and shuts off communication between the bore 41 and the duct 5. Upon downward movement of the reciprocating por-` tion of the pump, the oil which has been drawn upwardly is forced downwardly through the upper section and the duct 4 into the cage 33 and as the valve ball 4| will now be seated upon I the valve seat 39 to prevent ow of the oil back through the bore 49 of the lower section into the' well, the oil will pass upwardly through the bore 41 of the section 34 and unseat the valve ball 3| so that it may flow upwardly through the cage 26 and the duct 5 into the chamber Il from which it will ow upwardly through the valve casing to the upper end of the well. 'I'he reciprocating portion of the pump will then again move upwardly to draw another charge of oil from the well and as the valve ball 3| will have returned to its lowered or seated position, oil will be prevented from flowing downwardly through the duct 35 from the well casing. An-

other downward movement of the reciprocating portion of the pump will force the charge of oil just withdrawn from the well upwardly through the section 3| and duct 35 into the well casing or tubing. It will thus b'e seen that durward movement of the reciprocating portion of the pump and. quickly forced out of the standing valve into the well tubing during a'downward movement of the reciprocating portion of the 7;

pump. When it is necessary to clean the standing valve or repair or replace any of the elements forming its core, this can be easily done after withdrawing the standing valve from the well as the core may then be withdrawn as a unit from the valve casing and then 'be very easily taken apart and reassembled after it has been thoroughly cleaned and any parts repaired or new parts substituted if necessary.

Having thus described the invention, what is claimed as new is:

1. In a standing valve, a tubular casing having its upper end adapted for connection with the lower end of a well tube, walls of the valve casing being formed with upper and lower longitudinally extending ducts offset relative to each other longitudinally of the valve casing to stagger the ducts and dispose their ends out of opposed relation to each other, a core tting in the bore of the tubular valve casing and formed with a bore open at its lower end and havingside ports communicating with lower ends of both ducts and with the upper end of the lower duct, the bore of said core being blocked between the upper end of the lower duct and the lower end of the upper duet and the upper duct having its upper end opening directly into the casing, said core having its upper end adapted for connection with a reciprocating pump serving as a closure .for the upper end of its bore, and valve members carried by said core for controlling directional flow of liquid through the core and ducts.

2. A standing valve for a pump comprising a tubular casing formed with upper and lower longitudinally extending ducts having their ends opening into the bore of the casing, the ducts being offset longitudinally of the casing to dispose the ducts in staggered relation to each other and position their ends out of opposed relation to each other, a hollow core tting into the bore of said casing and formed with side ports spaced from each other longitudinally of the core and communicating with the lower end of the upper duct and the upper and lower ends of the lower duct, a barrier'in said core between the ports communicating with the lower end of the upper duct and the upper end of the lower duct, and valve members carried by said core in cooperating relation to the ports communicating with lower ends of the upper and lower ducts for controlling directional ilow of fluid through the core and ducts.

3. A standing valve for a pump comprising a tubular casing having longitudinally' extending ducts offset longitudinally of the casing to dis-g pose ends of an upper duct out of opposed relation to ends of a lower duct, a core extending longitudinally in the bore of said-casing and formed with side ports communicating with the lower end of the upper duct and the upper and lower endsof the lower duct, the upper end of the upper duct being unobstructed by said core, packing about said core having tight fitting engagement with walls of the bore of said casing to prevent passage of fluid through the bore of the casing about the core, said core having its upper end adapted to be connected with a reciprocating pump, and valve members mounted in said core and housed by the portions of the core having the side ports communicating with lower ends of the upper and lower ducts, said valve members normally remaining in a lowered closed position and being shiftable upwardly to an open position and serving to control directional iow of fluid through the core and ducts.

4. A standing valve for a pump comprising a tubular casing having upper -and lower ducts extending longitudinally thereof with their ends opening into the bore of the casing and the ends of the upper duct being oiset from ends of the lower duct longitudinally of the casing, a core extending longitudinally in the bore of said casing and having its upper end disposed out of blocking relation tothe upper end of the upper duct and adapted for connection with a reciprocating pump, said core being formed of sections connected with each otherand certain of said sections having side ports communicating with the ducts of the casing, one section having a solid portion constituting a barrier to prevent ow of liquid through the core between the lower end of the upper duct and the upper end of the lower duct, and valve members in said core housed by the portions Vof the core having ports communicating with lower ends of the upper duct and lower duct and movable from a closed position to an open position.

5. A standing valve for a pump comprising a tubular casing having upper and lower ducts extending longitudinally of the casing and offset relative to each other longitudinally of the casing to dispose their ends out of opposed relation to each other, a hollow core ttlng in the bore of said casing and having its upper end out of blocking relation to the upper end of the upper duct and adapted to be connected with a reciprocating pump, said core consisting of a plurality of sections disposed in endl to end engagement with each other and threaded to each other, certain of said sections having their walls formed `with openings and constituting upper, lower andintermediate cages, the upper cage being disposed in position to communicate with the upper end of the lower duct, the intermediate cage communicating with the lower end of the upper duct and the lower cage communicating with the lower end of the lower duct, tubular valve seats carried by said core and located at lower ends of the intermediate cage and lower cage, valve balls in the intermediate cage and lower cage normally resting upon the valve seats when in a closed position and being shiftable up. wardly to an open position, one section having a solid portion constituting a barrier between the upper cage.` and the intermediate cage, and packing carried by said core to bear against walls of the bore of the casing and prevent ow of uid through the bore of the casing about the core.

6. A stand valve for a pump comprising a tubu- Alar casing, walls of the casing being formed with upper and lower ducts extending longitudinally f. therein at opposite sides thereof in staggered relation to each other with their ends opening into the bore of the casing in longitudinally offset relation to each other, ahollow core tting in the bore of said casing and having side portsA spaced from each other longitudinally of the core and each communicating with an end of a ccoperating duct, a partition blocking the core between the upper end of the lower duct and the lower end of the upper duct, and valves for controlling flow of fluid through the core and the lower ends of the ducts. Y/ W FRANK C. RICHARD N. VICKERS.