US2213807A

US2213807A - Deep well pump

Info

Publication number: US2213807A
Application number: US208105A
Authority: US
Inventors: Starbuck Hobart
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-05-16
Filing date: 1938-05-16
Publication date: 1940-09-03
Anticipated expiration: 1957-09-03

Description

Sept. 3, 1940.

H. STARBUCK DEEP WELL PUMP .Filed May 16. 1938 2 Sheets-Sheet 1 .llllrnfllnlrllllllldl HOBART 'STARBUCK j 5MM.;

FIG.1

H. STARBUCK DEEP WELL PUMP Sept. 3, '1940.

Filed Hay 16, 1938 2 Sheets-Sheet 2 FIG. 3

HO BART STAR BUCK /NVENTO/l 3051i!!! ral: vlllfllllle E .lll

lllllllv A oR/VEY Patented Sept.` 3, 1940 UNITED STATES 2.21aml Nl" OFFICE 3 Claims.

The invention may best be described with ref-- 5 erence to the attached drawingsfin which Fig. 1

represents diagrammatically the lower end and f Fig. 2 the upper end of a well provided with the apparatus of the invention, certain of the parts being broken away to show internal construction, and Fig. 3 representsthe lower end of a well provided with an alternative form of the apparatus.

Referring to these drawings, I il represents fragments of the well casing; Il is a conventional casing head through which tubing I2 is run to bring its lower end to the desired depth of ,submergence inthe oil which rises in the casing. The tubing is landed on the casing head by a tubing ring I3. v

On the lower end of the tubing a pump collar I 6 carries the working barrel l5 having a liner I3, the liner being retained by a pump collar I1. The lower end of this collar carries the Kelley shoe I8 in which the upper standing valve as4 ,30 named. The lower standing Valve assembly jseats in shoe 23 and is provided with the usual pull rod 26 for withdrawing it from the well.

vThe upper end of the upper standing valve assembly is provided with the Garbutt rod 21 slidL.

ing Within the plunger 28. On top of the plunger is placed a working valve 29, this valve,. in the lform shown in Figs. 1 and 2, having a fluid cage,A`

well.

i. e., a housing which prevents oil from passing through the working valve into the tubing but 40 directs into the interior of the macaroni tube 30 which leads to a point above the derrick flour and through which the plunger is actuated. At its upper end the macaroni passes slidably through a T fitting 3|.having a stulng box in its uplooking run 32 and a pipe connection 33 from its branch, this pipe leading to the upper portion I of a settling tank 34 which has an overflow con, nection to which the lead line from the well may be attached. l f y f At its extreme upper end the macaroni 30 carries a T 35 connected by a flexible hose 36 'to settling tank 34. The upper end of the T is plugged as at 31 and made fast to a rod 38 which 'in turn is connected by the conventional walking beam,

(Cl. 10S-204) not shown, to any preferred means for vertically reciprocating the macaroni 36. 4

Finally, a bypass tube 39 of relatively small cross sectional area is shown in Fig. 1. This bypass connects any convenient point between the two standing valves, as for example point 40, with any convenient point in the tubing above the entire pump, as for example point 4l. In the form shown in Fig. 3, a similar bypass 39a connects point 40a or other convenient point be- 10 tween the two standing valves with the interior of vthe pump barrel vat some point, such as point 44, at which the opening into the barrel will alternately be covered and uncovered by the reciprocation of plunger 28. l y 1 This apparatus functions in the following manner. In the form shown in Figs. 1 and 2, an upward stroke of the macaroni produces a similar movement of the plunger and draws oil from within the casing through the lower standing 20 valve 25 and into the space within swage nipple 2| a. On the succeeding upstroke this oil passes through the upper standing valve i9 into the hollow plunger 28. 0n the next downstroke the oil passes through the working valve 23 into the 25 lower end of macaroni 30 and displaces a correspending quantity of iiuid from the upper end, this oil passing through flexible hose 36 intotank 34. From this tank a relatively small stream of oil ows from the tank through pipe 30 33 :Into tubing I2, passing down the tubing until.

it encounters the iluid housing of working valve 29. As the oil cannot pass this housing, it flows through bypass 33' into the space within the adapter, from which it is again picked up by the pump as above described and delivered to the surface together with the oil produced by the v This circulation of oil from and tothe surface has three major advantages, two of which. are manifested when the well pumps oii by temporarily exhausting the oil supply in the casing-a Y common occurrence with wells of relatively small production. First, the circulation of oil through the pump keeps it constantly lubricated and prevents it from being damaged by running dry. Second, the circulation of oil through the pump prevents itfrom sanding up When'the well pumps off, by keeping the sand in suspension. Third, this circulation tends to dislodge and eject gas B0 from below the upper standing valve and thus toprevent the formation of elastic gas pockets by which the delivery yof the pump may be impeded seriously. l r

,Tt is also possible, through the use of the form e' out of its upper end through the conventional lead line` l A small proportion of the oil lifted at each stroke returns to the space below the upper I standing valve through bypass 39a, this quantity being determined bythe area of the bypass and the relative proportion of the total stroke time during which point 44 is uncovered by movement of the plunger. In this form, all por-,- tions of the invention are included in the vicinity of the submerged pump, therefore the apparatus at the well head, which may be of any suitable type, is not illustrated. Y l

I claim as my invention:

1. Deep well pumping mechanism comprising: a Well tubing; a submerged pump having a working barrel, a hollow plunger, two standing valves arranged -in series, and a traveling valve, said working barrel being connected to the lower end of said tubing; a blind cage enclosing said' trav'- eli'ng valve; a hollow sucker rod communicating at its lower end'with said blind cage and arranged to convey liquid therefrom to the well head, said sucker rod being adapted to reciprocate within said tubing and thereby to actuate said plunger; means for introducing a controlled stream of the pumped liquid into the upper end.

of said tubing; and a bypass arranged to conduct saidintroduced liquid around said Working barrel to the space between said standing valves.

2. Deep well pumping-mechanism comprising a submerged pump having a working barrel, a w plunger, a traveling valve, andtwo standing valves arranged in series; a pump tubing arranged to suspend said working barrel in substantially iixed position and to conduct liquid from said pump out of a well; a sucker rod connected with said plunger and arranged to reciprocate within said tubing; a bypass arranged to conduct a restricted stream o`f pumped liquid from the liquid-conducting space -within said tub- A ing and 'above said traveling valve to thel space between said standing valves; said bypass being arranged to be closed by said plunger during a' portion of each stroke of the plunger.

3. Deep well pumping mechanism comprising: a pump tubing; a submerged pump, said pump having a working barrel, a plunger, a traveling valve, and two standing valves arranged in series,

said working barrel being connected to the lower. end of said tubing and thereby held suspended in substantially iixed position; means for actuating said plunger comprising an elongated member connected to said plunger and arranged to reciprocate Within said tubing; means for supply- 'ing pumped liquid delivered by said plunger to a space within said tubing and above saidA plunger; and meansl for conducting' a. restricted stream of said pumped liquid from said space within said tubingkand above said plunger toethe space be- $0 tween said two standing valves.

HOBART STARBUCK. 1