US 1648377 A
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Description (OCR text may contain errors)
Nov. 8, 1927.
E. v. claowELl.
CONTROL HEAD mossa I Filed oct. 2s. 1924 L/drauml/ `Paten-ted Nov. 8, 1927.
UNITE-ov STATES PATENT OFFICE.
ERD V. CROWELL, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO THE GUIBERSON CORPORATION, 0F DALLAS, TEXAS, A CORPORATION 0F DELAWARE.
Application filed October 25, 1924.
This-invention relates to new and useful improvements in control head packers.
The inventionhas particularly to do with improvements in the type of devices set forth in my former Patent-s No. 1,354,027 1ssued September 28, 1920, and No`1,432,674 issued October 17th, 1922.
The object of the invention is to provide` a device provided with a packer element held under restraint While going into the well and also equipped with a flow controlling valve normally held open.
A- particular obfect of the invent-ion is to provide a valve of `the telescoping type adapted to be closed and cut ofi' or modulate the flow when thepaclier is sealed.
A construction designed to carry out the invention will be hereinafter described together with other features of theinvention.
The invention will be more readily understood from a reading of the following specilication and by reference to the accompanying drawings, in which an example of the .invention is shown, and wherein:
Fig. 1 is a view, partly in vertical section and partly in elevation of a device constructed in accordance with my invention, the parts being in the position occupied when the device is being lowered into the well,
Fig. 2 is a similar view showing the position occupied by the device whcnthe same in anchored in the well,
Fig. 3 is an enlarged cross-sectional view on the line 3 3 of Fig. 2, and
Fig. 4 is a vertical sectional view of tho lower portion of the device.
In the drawings the numeral 10 designates the usual Well casingand 11 the tubing, 'which constitutes a flow pipe or discharge tubing and extends vertically in the-well casing. The device is attached to the lower` end of the tubing. `Below the devicevis a string of tubing 12 which constitutes a swinging anchor, or an intake for the oil.
The device consists -of an open ended cylindrical body 13 having a reduction coupling 14 screwed onto its lower end. The coupling has an internally screw threaded nipple 15 receiving the upper end of the tubing 12 and vis also provided with inlet ports 16. The upper end of the body is screwed into a collar 17. A rubber or simi- Serial No. 745,770.
body andcarrying slips 22 having serrated faces 2 3.. adapted for gripping engagement with the well casing. The slips'are carried by the cageso as to be free to swing outwardlyl under the action ol the conical face Slip springs 24 are mounted upon the sllp cagel andenga-ge the slips and are adapted to frictionally engage the inner wall of the well easing/.A hook 25 carried by the slip cage cooperates with a pin` 26 carried by the body 13 to maintain the slips out of engagement with the wall of the Well casing when the pin is received in the bight 0f the hook.
The collar 17 extends above the upper end of the body 13 and receives the lower end of a tubular valve cage 27 which is cylindrical and has upper and lower annular shoulders 28 and 29 respectively. The cage In Fig. 1 I have shown the valve open and the device in the position in which it is inserted in the well. It will be seen that the slips 22 are held below the conical'face 20 by the hook 25 and pin 26, while the slip springs 24 ride down the casing wall. As the device is lowered gas may enter the ports 16 and escape through the valve openings 30. l/Vhen the tubing, control head and packer are inthe desired position the tubing is rotated about 180 degrees thus turning the body 13 on which the pins 2G are carried. This movement releases the pins 26 from the hooks 25, whereby the slip cage is released. In order to communicate rotary motion from the sleeve 33 to the cage 27 ,I
a radlal lug 36 is provided on the inner periphery of the valve ring 31 so as to extend into one of the openings 30, but any other suitable means may be used.
This movement of the body 13 releases the pins 26 from the hooks 25, whereby the slip cage 21 is released. The slip .springs 24 which frictionally engage the wall of the casing 10, maintain the cage and the sli s stationary in said well casing, so that as t 1e lowering of the packer continues, the conical face 20 expands theslips 22, and forces their serrated or toothed aces 23 into bindingengagement with the well casing, thus` anchoI'-, ing the whole device as and 12.
As the weight of the body 13 and tubing 12 settle upon the agency of the collar 17, said sleeve is expanded and `seals the annular' space between t-he packer and the casing, whereby the outlet of gas or oil is restricted to the body 13. .IVhen the tubing 11 is lowered the sleeve 33 is moved downward and the ring 31 slides down the cage 27, whereby connection with the casing is cut of through theopenings 30. The ring 31 comes to-restfuponcthe shoulder 29, thus imposing additional weight upon the collar 17,and vthe rubber sleeve 18. The flow is now confined to the body 13, sleeve `33 and well as the tubing 11 y the vbodyfor tubing the rubber sleeve 18 through tubing which occupy the position shown in I3y suitably handling the tubing the .positlon of. the packer and control head may be varied and the compression chamber .below the packer, may thus be varied. It is obvious that yarious may be used in lieu of the rubber sleeve 18.
Various changes in the size and shape ofr the different parts, as well as modifications and alterations may Jbe made within the scope of the appendedclaim.
What I claim, is: In a control head packer, the combination of ahollow body, a coupling at the bottom of and having a fluid admitting opening, a hook wall slip Vmounted von the body, a colnpressible packing collar surrounding the body, a tubular valve cage mounted on the upper end of the body and vertical -fluid openings intermediate its ends, avalve sleeve telescoping over the cage and covering said openings, the sleeve having a reduced neck for coupling to a tubing, an internal lug carried by the sleeve and engaging in one of the: openings of the cage for rotating said cage and the body to set the hook wall slip. l
In testimony whereof I affix my .signature ERD V. CROWELL.-
forms 'of packing elements