US1766487A - Pump - Google Patents

Description

June 24, 1930.

J. B. CONNER PUMP Filed Sept.

M 'LIYTUR.

Patented June 24, 1930 PATENT OFFICE JULIAN BUFORD CONNER, OF HUMBLE, TEXAS PUMP Application filed September 7, 1926. Serial No. 133,971.

This invention relates to new and useful improvements in a pump.

One object of the invention is to provide a deep well pump specially designed for use in oil wells for extracting the oil from the surrounding oil bearing strata and delivering the same to the surface of the ground. Another object of the invention is to provide a device of the character described which is of very simple construction and may be cheaply, easily and efiiciently operated.

With the above and other objects in view this invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein Figure 1 shows a vertical sectional view of the lower end of the device, and

Figure 2 shows a vertical sectional view of the upper end thereof.

' Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures the numeral 1 designates a casing which is set in a well bore. In practice the lower end of this casing usually rests on the formation immediately above the oil bearing strata. The numeral 2 designates the casing head carried by the upper end of the casing and provided with a lateral flow line 3. A string of pipe 4 is suspended in the casing with one of its connecting couplings 5 resting on a stufiing box, forming the upper end of the casing head, to support said string. Connected to the lower end of the pipe there is a coupling 6 and rotatably mounted in this coupling with its lower end depending beneath it, there is a tubular nipple 7 having the axial channel 8 therethrough, whose lower end terminates in a restricted, discharge opening 9. The lower end of the nipple also carries a plurality of radially disposed discharge nozzles 10, 10, whose discharge ends are upwardly curved and correspondingly inclined to the axis of rotation of the nipple so that as fluid is forced, under pressure, therethrough, the

nipple will be turned, or rotated thereby.

This nipple works loosely through a staffing box 11 in the lower end of the couplings 6 and as the nut 12, threaded on to the upper end thereof and retained thereon by the lock nut 13 and interposed between the nut 12 and internal shoulder 14 of the coupling 6 are the conventional anti-friction bearings 15.

The type of pump herein described, has been specially designedfor the purpose of extracting oil from loose formation such as shale. It is very difficult to remove any considerable amount of oil from formations of this character by the ordinary pumping process as a high percentage of the oil is held in the formation and cannot be pumped out.

In operation the pump is let down into the bore to the lower end of the casing and fiuid, preferably crude oil, is then forced down through the string of pipe 4, under considerable pressure, and this oil will be discharged out through the restricted openings 9, as well as through the nozzles 10. The fluid passing out through the nozzles 10 cause the nipple to rotate on account of the inclination of their discharge ends to the axis of rotation. The streams of oil thus forced will gradually disintegrate the formation beneath the nozzle as well as around it and form a semi-fluid mass therewith which will be forced out through the casing on the outside of the pipe 4 and out through the flow line 3. The crude oil employed, as the pressure fluid. will thus be returned laden with the released formation and the oil contained therein andthe cavity at the bottom of the bore will gradually be enlarged and oil in the surrounding strata will gradually seep into the cavity formed. This will be carried up to the surface of the ground along with the pressure fluid and a considerable quantity of the oil held in the formation may thus be recovered. At the surface of the ground the oil may be separated from the foreign matter therein by any well known separating process.

If desired steam, air, or water may be used as a pressure fluid instead of the crude oil.

During the operation of the pump the string 4 may be moved up and down or rotated to prevent the congestion, or packing, of the material being forced out through the casing, around said string.

What I claim is A device of the character described includin a string of pipe adapted to be suspende in a well casing, a coupling attached to the lower end thereof and havlng an internal annular shoulder, a tubular nip 1e supported on said shoulder and rotata ly mounted in the coupling and havin its lower end extended beneath the coup ing, said nipple having an axial channel therethrough whose lower end terminates in a restricted discharge opening, a plurality of radially disposed discharge nozzles carried b the lower end of the nipples whose disc arge ends are upwardly curved and correspond ingly inclined to the axis of the rotation of the nipple and means carried by the nipple and coupling respectively for maintaining the nipple against endwise movement in the coupling.

In testimony whereof I have signed my name to this specification.

JULIAN BUFORD CONNER.

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