US2435407A - Oil well pump - Google Patents

Description

Feb. 3, 194a. PRY R 2,435,407

OIL WELL PUMP Filed Jan. 25, 1946 P 1. z FIG. 1. 4 z 7 j IG- 2. 3 a 5 2 2 5 a :f FIG.3. j 3 a r K O8 /0 If DURHAM w. Pmron,

Patented Feb. 3 1948 UNITED STATES PATENT OFFICE 01L WELL PUMP Durham W. Pryor, Lockport, Ill.

Application January 25, 1946, Serial No. 643,388

6 Claims. (01. 10339) This invention relates to an oil well pump, and more particularly toa fiuid control seating coupling and a standing valve seat for use in oil p ps.

.An object of this invention is to provide an improved oil well pump having a fluid control seating coupling and a standing valve seat to enable control of the fluid level to the level desired during pumping.

Another object f this invention is to provide a, seating coupling and standing valve seat combination which may be applied to any standard oil well ump to control the level of the oil, below which level the pump will cease to pump oil.

It is still another object of this invention to provide an improved seating coupling and standing valve seat for oil pumps which will hold the oil to the level desired and still pump from the bottom of the well thus keeping the sand covered with oil and insuring pumping off of the water that may be present. v

Other objects of this invention will appear from the following specification and claims and from the accompanying drawin illustrating the invention, wherein:

Figure 1 is a sectional elevational view through the bottom portion of an oil well pump showing the seating coupling and standing valve seat and associated parts;

Figure 2 is an elevational view, partly in "section, of the standing valve seat of this invention;

Figure 3 is a plan view of the standing valve seat;

Figure 4 is an elevational view, partly in section, of the fluid control seating coupling of this invention; and

Figure 5 is a plan view of the fluid control seating coupling.

Referring to the drawing, I is the oil pump rod that extends from the surface of the ground and is reciprocated in a conventional manner by mechanism above ground; 2 is the working barrel at the lower end of the oil pump which receives the conventional travelling valve 8 fastened to the pump rod I. A conventional standin: valve 4 is screwed at I into the standing valve seat 8 as clearly shown in Figure 1. The standing valve seat 8 is threaded also at 1, at its lower end, and has a tapered inverted cone-shaped body portion 8 which seats in the seating coupling 0 having a complemental seating surface Ill.

The standing valve seat 6 is provided with four radial orifices ll through the tapered body portion 8. Similarly the seating coupling 8 is provided with four radial orifices l2 extending there- 2 through at the approximate center ortion thereof. The seating coupling 9 is also provided midway of its seating surface ID with a circumferen tial groove 13. Thus from this construction, a lateral air passage is provided from the exterior of the oil pump to the interior of the standing valve seat 6, through orifices I2, groove l3 and orifices ll. Because of the groove l3, it is not necessary for the orifices II and i2 to be in alignment to maintain an open passage. Thus there will always be an open air passage regardless of the position the standing valve seat 6 assumes in seating coupling 9. In other words the standing valve seat 6 can seat in any circumferential posi-- tion. The lower portion of the pump is provided with a conventional pipe ll having perforations ii at its lower end for admitting fiuld from the oil well into the pump. The pipe I may be seetional so that its length can be varied to adjust the position of the coupling 9 from the bottom of the pipe ll. Thus the length of pipe It may vary from a few feet to hundreds of feet. As seen from Figure 1, the coupling 9 is threaded at top and bottom to couple pipes 2 and I together. The pipe l6, likewise preferably sectional to enable adjustment of its length, is threaded at I to valve seat I and extends down to a point approximately midway of the perforations.

Although only four orifices II and four orifices 12 have been illustrated, it is obvious that a lesser number or greater number of orifices can be used within the scope of this invention.

In operation the oil pump is inserted in the oil well under the lower end of pipe It strikes the bottom of the well and pumping is commenced. Since water is heavier than 011 it will be at the bottom of the well and will be first pumped out through the perforations l5 and up through pipes l6 and 2 to the surface of the ground. Then the oil will be pumped out, the pumping, 01 course, being from the bottom of the well. When the level of the to of the oil in the oil well drops to a position below orifices II, the pumping of oil immediately ceases by the opening of the air passage through orifices ll. groove II and orifices I! to the space above the oil in the well. Pumping cannot restart until the oil reaches a level above the orifices it, Thus it is apparent that there is provided an oil pump which requires the oil level to be at or above orifice l2 before pumping can occur. This insures a certain depth of oil to protect the oil sand. Also by this equipment pumping is always from the bottom of the well to keep the salt water pumped off. .As indicated above by means of having pipes I4 and I! 3 in sections, fewer or more sections can be used to vary the height of orifices 12 and at which the oil will stop pumping It is, also evident that the seating coupling 9 and standing valve seat 6 of this invention can be adapted for use with any conventional oil pumping equipment by inserting it on the conventional barrel in desired position.

While a certain specific embodiment of this invention has been shown it will be understood that various modifications may be made within 1 the spirit of the invention. Therefore no limitations on the invention are intended other than are imposed by the scope of the appended claims.

I claim: i v 1. An oil well pump comprising a length of pipe, having perforations at the lower end thereof, a second length of pipe, 9. coupling interconj necting said pipes, a standing valve -in said sec- 3 0nd pipe, a hollow inverted cone-shaped tube carrying said standing valve, said coupling having an inverted cone-shaped seat formed on the interior thereof for receiving said cone-shaped 1 tube and radial orifices extending laterally therethrough, said cone-shaped tube also having said lower end connecting sections of said casing. said coupling element having a central opening with converging walls forming an inverted coneshaped seat, an annular recess associated with said cone-shaped seat, and radially extending orifices communicating with said annular recess'and the exterior of said coupling member for breaking the seal to stop pumping when the oil level drops below said orifices, a standing valve with a depending cone-shaped element associated with said cone-shaped seat, said cone-shaped element having radial orifices eigtending laterally therethrough and in communication with the interior the lower end of said casing connecting sections radial orifices extending laterally therethrough i and communicating with said first-mentioned j orifices and forming lateral air passages there- 3 with, a piston in said second length of pipe. and a valve associated with said piston.

2. An oil well pump as claimed in claim 1 wherein said cone-shaped seat is provided with a j circumferential groove communicating with said orifices. a

3. An oil well pump as claimed in claim 1 wherein said cone-shaped seat is provided with a" circumferential groove communicating with said orifices, and wherein said. first-mentioned pipe is of adjustable length to vary the height of said 1 0 4. An oil well pump as claimed in claim 1 wherein said first-mentioned pipe is of adjustable length to vary the height of said coupling coupling from the bottom of an oil well.

from the bottom of an oil well.

5. An oil well casing having a closed lower end with perforations in the wall thereof adjacent of said casing, said coupling .element having a central opening with converging wallsjforming an inverted cone-shaped seat, an annular recess associated with said cone-shaped seat, radially extending orifices communicating with said annular recess and the exteriorof said coupling member, and a standing valve with a depending cone-shaped element associated with said coneshaped seat, saidcone-shaped element of the' standing valve also having radialorifices in the wall thereof positioned to register with said annular recess.

DURHAM W. PRYOR.

REFERENCES CITED 'The following references are of record in the file of this patent:

UNTIED STATES PATENTS Number Name Date 1,808,985 Helmling June 9 1931 said lower end, a coupling element spaced m'mi Hahn May 30, 1911

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