US47148A - Improvement in oil-ejectors - Google Patents

Description

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NITED STATES EErcE.

PATENT IMPROVEMENT IN OIL-EJECTORS.

Specification forming part ot' Letters Patent No. Il?, Mig, dated'April I1, 1.865.

To @ZZ whom, it may concern:

Beit known that we, GEORGE L. WrrsiL and EDWARD BURKE, of the city and county of Philadelphia, State of Pennsylvania, have invented a new and Improved Air Injector, Comp ressor, and Exha-uster for Coal-Oil lVells, and we do hereby declare that the following is a full, clear, and exact description thereof, reti erence being had to the accompanying drawings, making a part of this specification, in

which- Figure l is an elevation of our improved ap paratus arranged for use. Fig. 2 shows in dctail the application of the cam fo operating the compressing and exhausting apparatus. Fig. 3 is a view in detail showing the application of valves to tlre pipes leading into and ont ofthe oil-well.

Similar letters of reference indicate correspending parts in the three figures.

It not unfrequently happens that oil-wells cease to eject up oil after flowing for a short time. VW'hen this occurs, and it is ascertained that such wells contain oil in abundance, but

at considerable depths. in the earth, contrivances are applied for forcing the oil up to the surface.

The object of' our invention is to apply an artificial pressure upon the oil in wells where the natural pressure is exhausted, by means of f au apparatus, which is so constructed that a powerful upward pressure is applied to force the oil to the surface at the same time that a partial vacuum is produced in the dischargel pipe above the oil, as will be hereinafter de scribed.

To enable others skilled in the art to make 'and use our invention, wc will describe its coustruction and operation.

In the accompanying drawings, Fig. l, A rcps resents a strong frame-work, which is erected over a well from which it is desired to obtain oil.

B represents a lever, which is pivoted at one end of frame A, and which iselevated by a two-throw cam, a, that is keyed to a trans` verse driving-shaft, C, carrying on one end a belt-wheel, C. The lever Bis suitably connected to a bellows, D, or compressing-pump ot' any suitable description, and it is also connected to the piston -rod of an exhaustingf pump, E. A weight, c, is suspended to au l arm projecting from the bellows D, for the purpose ot' bringing the lever B down very suddenly when released by the cam a. Other plans may be adopted for depressing the lever B or elevating this lever.

The exhausting-pump E is so constructed that as its piston rises it will allow the oil forced up through the discharge-pipe to flow freely from the nozzle (Z, as represented in Fig. i l. At the contracted base ot' the exhausting I pump E a pipe, F, is suitably attached, which pipe leads down into the oil-well, and has its i lowest extremity submerged in the oil. To l the nozzle ofthe compressing-pump or injector D a pipe, (i, is suitably attached, which leads down into the oil iu the well, aud has its lowermost extremity turned upward, as shown in Figs. l and 3.

H represents a plug or packing of indiarubber or other suitable material, which is forced down into the well a suitable distance, so as to effectually close it, and thus prevent either oil or air from escaping upward outside of the induction and eduction pipes F and G. It is desirable to locate said plug as near the l bot-tom'of the discharge-pipe as possible. XVe apply to the inductionpipe G- a number of I valves ofanysuitable description, all of which I open downward, and allow air which is forcedi through this pipe or hollow shaft to pass downl ward, but close against said air and prevent j it from escaping back. XVe employ a number ol' valves, r/,arranged i within pipe G at suitable intervals apart for l the purpose ot' trapping the column of air in i said pipe and keeping it there. The discharge pipe F is also provided with a number of valves, j', arranged one above the other and all opening upward,for the purpose of allowi' ing ot' a free ascent of the oil and preventing l it from flowing back into the well. i The operation of forcing oil out of a well is as follows: The driving-shaft@ is set in motion by any convenient prime motor, and the cani a on said shaft gives a rapid vibrating Il motion to thelever B, which, being connected to l the exhausting pump E and compressing pump D,starts these pumps to work. At thelever B is thrown up air is drawn into the compressing-pump and' exhausted from the discharge-pipe F simultaneously, and as the leverBis suddenly depressed air is forced down into the well below the plug or packing H, at the same time the piston of the (airpump) exhaustingpurnp is depressed. continuing the operation of the pumps a pressure equal to a number of atmospheres will be brought to act upon the oil in the well, and when this pressure becomes sufticient the oil will be forced upward through the discharge-pipe F into the exhauster, and thence flow from its nozzle into suitable reservoirs for its collection.

By reference to Fig. 2 ofthe drawings it will be seen that the lower extremity of the air or inlet pipe G, which communicates with the condenser D, is turned upward beneath the lower extremity of the discharge-pipe F, the object of which is to cause the currents of inA ilowing air to act upward against the column of oil in the pipe F. I

By means ofthe exhaustingpump we produce a partial vacuum in the dischargepipe, and thus remove to a considerable extent the superincumbent pressure upon the oil in this pipe and give greater force to the compressed air in the welll. XVe, in fact, force air into the well and pump the oil out by means of a single lever receiving a rapid vibrating motion.

Ifdesirable,the connection between the compressing-pump and its pipe may be made ilexible; but for all ordinary purposes arigid connection will be found to answer a very good purpose.

The lever B may be pivoted in the center to its frame A, so that both ends will vibrate, in which case the compressor will be connected pump to the other arm. By such an arrangement the air in pipe F will be exhausted simultaneously with the iuiinx ot' air into the well.

\Ve do not claim the principle of raising oil l `from wells by air or steam, said principle bel ing employed by means different from those shown by us; neither do we wish to be understood as making a distinction between oil and water in the application of our particular means for raising and discharging these uids from wells; but

Vhat we claim as new, and desire to secure by Letters Patent, is

1. The combination ot' condensing and cxhausting pumps in conjunction with induction and Ieduction pipes arranged within an oilt well, substantially as and for the purposes de- A scribed.

2. Connecting both the exhausting and compressing engines to a lever which receives a rapid vibrating motion, substantially as and for the purposes described.

Witness our hands in the matter of our application for a patent for improved air injector, condenser, and exhauster for coal-oil wells.

l! to one arm of this lever and the exhausting- -l l GEO. L. VITSIL.

EDWD. BURKE.

Vitnesses:

B. T. CAMPBELL, E. Sor-ninna.

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