US1755661A - Deep-well pump - Google Patents

Description

H. 'PATERSON April 22, 1930.

DEEP WELL PUMP Filed April 16, 1929 2 Sheets-Sheet April'22, 1930. H. PATERSON DEEP WELL PUMP 2 Sheets-Sheet 2 Filed April 16, 1929 Inventor Patented Apr. 22, ieec" HERBERT PATERSON, OF LONG BEACH, CALIFORNIA DEEP-WELL PUMP Application filed April 16,

This invention relates to pumps, and more particularly to that class of pumps designated as displacement pumps, and has as its primary object the provision of a pump so designed as to operate on the principle of using two columns of liquid for operating the piston, thereby eliminating the use of the usual rod now in conventional use, extending from the pump to the surface.

In the contemplation of my invention the improved pump is adapted to be actuated by an auxiliary force pump on the surface and includes a casing, a piston adapted to reciprocate within the casing and conduits so associated with the casing and an auxiliary force pump whereby the piston is caused to rise or fall as the case may be upon the pres sure received from the auxiliary pump.

A further object of the invention consists 2 in the provision of a pump which will eliminate the need of rods now used in the present system, and which have been found costly in maintenance and unsatisfactory in operation. I

A still further object of the invention is to provide a pump of this character which may be operated from any depth, installed in either a large or small well, and wherein the capacity of the pump will be greatly in excess of any of the present pumping sys- \tems.

A still further object of the invention is to provide a pump of this character that will have no direct mechanical connection withthe surface of the ground or with the actuating mechanism, but is operated solely by the pressure of fluid in two fluidcolumns.

It is also the object of this present invention to provide a pump of the above de- 4 scribed character which will be comparatively simple in construction, may be maintained at a relatively low cost, and which will be practicable and thoroughly eflicient in operation.

Other objects and advantages of the invention will become readily apparent to the reader during a study of the following description taken in connection with the accompanying drawings, wherein:

Figure 1 1s a vertical sectional view of a column 1929. Serial No. 355,471.

deep well, such as an oil well, showing the improved pump installed therein, and a connection of the fluid conduits from the compressor to the pump.

Figure 2 is a longitudinal sectional View taken through my improved pump showing the piston on the down stroke.

Figure 3 is a view similar to Figure 2, but showing the piston on the upstroke.

Figure 4 is a transverse sectional detail 60 View taken on line 44: of Figure 3.

Figure 5 is a transverse detail sectional view taken on line 5-5 of Figure 3.

Figure 6 is a longitudinal sectional view taken through the Well showing an alternative installation of my pump wherein but one column is brought to the surface, the whole well being utilized for the other column.

With reference more in detail to the drawings it will be seen that my improved pump comprises a metallic cylindrical casing 5 which is substantially elongated and is internally threaded as at 6 and 7, respectively, at its upper and lower ends to receive the plugs 8 and 9, respectively, which Iplugs are also provided with complemental t reads 10 and 11, whereby the casing is substantially closed at its opposite end. The plug 8 at theupper end of the casing is provided with a centrally disposed internally threaded opening 12 to receive the threaded end of a pipe 13, the other end of said pipe column being connected to an auxiliary force pump designated generally by the reference character A, as at 14:. The plug 9 is also provided with a centrally disposed, internallythreaded opening 15 to receive the threaded end of a pipe column 16, which pipe column 16' it will be noted is curved adjacent the lower end as at 17 so as to extend upwardly in spaced parallelism to the casing 5 to have its other end connected to the auxiliary force pump A as at 18.

The cylindrical casing 5 .of the pump is divided by means of a stationary plug designated generally by the reference character 19. The plug 19 is screw threadedly associated with the interior of the casing 5 as at 20, 21, 22 and 23, respectively.

ton B during its reciprocable movement within the casing. The plug 19 is further provided with diametrically opposed vertically extending bores 25 which communicate with the upper and lower portions of the casing to provide ports for the passage of fluid from the well which enter through the laterally extending ports'26 formed in the plug and communicating with the bores 25. The casing 5 is provided with openings or ports 27 formed on its circumference and in communication with the intake ports 26 of the plug-respectively.

Spring pressed valves 27 are carried by the plug and are disposed at opposite ends of the ports 25 respectively, as shown to advantage in Figures 2and 3 of the drawings.

The function and operation of these valves will be described more in detail as the description proceeds. Attention is now directed to the piston B, and it will be noted that the piston comprises an elongated tubular member 28 which is of hollow construction and opened at both ends, and the member 28 is fitted at both ends with the valve chambers G. Since both of the valve chambers C are identical in construction it is believed that a description'of one will suflice. The valve chambers C are divided into sections 29 and 30, respectively, and it will be noted that the section 30 of the valve chamber is provided with the inlet ports 31 and 32, which ports are normally held closed by the spring pressed valves 33 and 34, respectively. The section 29 of the valve chamber is provided with the port 35 and as shown these ports have no valves associated therewith. The sections 29 and 30 are in communication with one another by means of the centrally disposed passage 36, which passage 36 is formed in the casing and is in axial alinement with the member 28 of the piston. The section 29 is also provided with a housing 37 adapted to receivethe stem 38 of the valve 39which is adapted to normally close one end of the passage 36 as will be apparent from astudy of Figures 2 and 3. k i

The operationof the pump is as follows: en pressure from the auxiliary pump A is applied to the pipe column 13, the piston B starts to move downwardly. The liquid from the well which has become imprisoned in the chamber formed in the-casing by means of the plug 19 and the valve casing on the upper end of the piston Bis forced through the valve 33 and 34, respectively, to find its way into the hollow piston B and out through the valve 38 in the section 29"of the valve casing at thelower end of the piston and thence through the discharge or pipe column 16.

During this downward stroke of the piston the chamber P formed in the casing between the plug and the lower valve casing on the member 28 of the piston is being filled with liquid from the well, through the ports 27, 26, and'25, the valves 31 and 32 in the section 30 of the lower valve casing being held closed by the suction force on one side of the chamber P and the pressure of the liquid in the valve casing and piston M on the other side.

Upon the return or upward stroke, pressure from the auxiliary pump A is applied to the pipe column 16 causing the piston to travel upward. The imprisoned'liquid in the chamber P is then forced through the valves 31 and 32 of the valve casing on the lower endof the member 28 of the piston, then through the hollow piston itself and out through the valve 38 on the section 29 of the valve casing at the upper end of the member 28, and then into the discharge column 13. Durin the upward stroke of the piston the cham er M is again being filled with liquid from the Well through the ports 27, 26 and 25 in an obvious manner,'and the valves 33 and 34 being held closed, that is the valve in the section 30 of the upper valve casing by the suction force on one side M and the pressure of the liquid in the piston B on the other side, as was the case at the opposite end of the piston during its down stroke. In this connection then it will be seen that the columns 13 and 16 act alternately as the pressure line and discharge line.

From the foregoing then it will be seen that I have provided an improved pumping mechanism for use in deep wells which is comparatively simple in its construction, practicable, and thoroughly eflicient in use, and that its advantages are numerous. It is to be noted that the feature of a pump of this nature is in the fact that its capacity on account of its 1' double action is much greater than any existing system of pumps. Then too, the capacity is extremely flexible, being easily regulated by the length of the piston stroke, the diameter of the pump and the number of strokes per minute. It has also been found in actual practice that the system of using two columns of liquid prevents any losses and guarantees a high efficiency in operation.

Although I have described my invention somewhat'in detail, it is to be understood that certain changes may be made therein without departing from the spirit of the invention as claimed or the scope of the appended claims.

Having thus described the invention, what I claim as new anddesire to secure by Letters Patent is 1. In a device of the character described, a casing, fluid conduits associated with the casing, a plug in the casing, inlet ports formed on the casing, ports on the plug communicating with the interior of the casing and .w1th the said inlet ports, a hollow piston carried by the plug, valve casings on .the opposite ends of the piston, valves in the casing, and means for forcing fluid-through said fluid conduits for operating the piston.

2. In a device of the character described,

' a pump comprising an elongated cylindrical casing, a plug in the casing located intermediate the ends of the casing, an opening extending through the center of said plug, a piston in the casing, and slidable through said opening in the plug, diametrically opposed bores extending vertically through the plug, providing portsinterconnecting the upper and lower sections of the casing, lateral ports leading from the first mentioned ports, and the casing having openings formed on its circumference communicating with the respectively laterally extending ports on the plu 3? In a device of the character described, a casing, fluid conduits associated with the casing, a plug in the casing, inlet ports formed on the casing, vertically extending ports on the plug for communication between the upper and lower sections of the casing. ports on the plug extending laterally from said first mentioned ports, circumferentially d s posed ports on the casing communicating with the laterally extending ports respectively, a piston carried by the plug and adapted for reciprocation within'the casing, and means for forcing fluid through the said conduit for operating the piston.

4. In a device of the character described, an enlongated casing of hollow tubular construction, said casing being provided with openings atits opposite ends, plug in the openings at the opposite end of said casing, a fluid'conduit associated with the plug at the upper end of thecasing, and communicating with the interior of said casing, a sec.- ond fluid conduit disposed in spaced parallelism with said casing, said second conduit having one end associated with the plug at the bottom end of the casing for communicating with the interior of said casing, a stationary plug in the casing, a centrally disposed vertically extending bore formed in said plug, vertlcal bores 1n the plug and constituting ports,

ports' formed in the plug and extending laterally from said first mentioned ports, valves adapted to close the ports carried by the plug, a hollow cylindrical piston slidable through the central bore in the plug, valve casings carried by the piston at opposite ends thereof, a valve carried by each of said casings and adapted to close the respective ends of said piston, ports on the valves communicating with the interior of the casing, spring pressed valves associated with said.ports, and means for alternately forcing pressure through the ton within the casing.

5. In a pump of the character described, a casing, fluid conduits associated with the casing at opposite ends of said casing, a plug in the casing havinga centrally arranged longitudinally extending opening extending therethrough, vertical ports extending through the plug and opening into said casing at the.

top and bottom of said plug, additional ports in the plug extending laterally of and communicating with the vertical ports, said lateral ports opening exteriorly of the casing,

spring pressed valves controlling said vertithe interior of the first mentioned casing,

spring pressed valves controlling the ports in the top of the lowermost piston formmg casing, spring pressed valves controlling the ports in the bottom of the uppermost piston forming casing, and valves in said piston forming casing controlling the opened ends of the tubular member of said piston.

6. In a pump of the character described, a

casing, fluid conduits associated with the easing at opposite ends of said casing, a plug in the casing having a centrally arranged longitudinally extending opcnin g extending therethrough, vertical ports extending through the plug and opening into said casing at the top and bottom of said plug, additional ports in the plug extending laterally of and communicating with the vertical ports, said lat-' eral port-s opening exteriorly of the casing, spring pressed valves controlling said vertical ports at the top and bottom of said plug, a

piston slidable through the centrally arranged opening in said plug, said piston embodying an elongated hollow tubular portion open at its opposite ends, piston forming casings on the opposite end of said tubular member and communicating therewith. said piston forming casings having ports atthe top and bottom thereof communicatrespective conduits for reciprocating the pis ing with the interior of the first mentioned casing, spring pressed valves controlling the ports in the top of the lowermost piston forming casing, spring pressed valves controlling the ports in the bottom of the uppermost piston forming casing, and valves in said piston forming casings controlling the opened ends of the tubular member of said piston, springs normally urging the last mentioned valves to a closing position, and the valve in the opened lower end of said tubular piston member being in a closed position during the downward stroke, and the last mentioned valve controlling the opened upper end of said piston tubular member being in a closed position during the downward stroke of the piston, and 5 vice versa during the upward stroke of the piston 7. In a pump of the character described, a casing, fluid conduits associated with the easing at opposite ends of said casing, a plug in the casing having a centrally arranged longitudinally extending opening extending therethrough, vertical ports extending through the plug and opening into said casing at the top and bottom of said plug, additional ports in the plug extending laterally of and communicating with the vertical ports, said lateral ports opening exteriorly of the casing, spring pressed valves controlling said vertical ports at the top and bottom of said plug, a piston slidable through the centrally arranged opening in said plug, said piston embodying an elongated hollow tubular portion open atits opposite ends, piston forming casings on the opposite end of said tubular member and communicating therewith, said piston forming casings having ports at the top and bottom thereof communicating with the interior of the first mentioned casing, spring pressed valves controlling the ports in the top of the lowermost piston forming casing, spring pressed valves controlling the ports in the bottom of the uppermost piston forming casing, and valves in said piston forming casings controlling the opened ends of the tubular member of said piston, springs normally urging the last mentioned valves to a closing position, and the valve in the opened lower end of said tubular piston member being in a closed position during the downward stroke,

40 and the last mentioned valve controlling the opened upper end of said piston tubular member being in a closed position during the downward stroke of the piston, and vice versa during the upward stroke of the piston, and the valves controlling the vertical ports in said plug at the loweri end of said plug and the valves controlling the ports in the bottom of the uppermost piston formin'g casing being in a closed position during the upward stroke of said piston, and the valves controlling the ports in the top of the lowermost piston forming casing being in an open position during the upward stroke of said piston. I i In testimony whereof I afiix my signature.

HERBERT PATERSON.

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