USRE15580E - Gas-trap float - Google Patents

Description

GAS TRAP FLOAT Original Filed Sept. 29, 1921 Inberd'or /7//0/7 r/ 7710x619,

Reiasued Apr. 17, 1923.

MILON J. TRUMIBLE, OF ALHAMBRA, CALIFORNIA, ASSIGNOR TO TRUMBLE GAS TRAP Re. 15,580 PATENT OFFICE.

(.70., A COPABTNERSHIP GONSIS TING OF MILON J. TRUMBLE, FRANCIS K. TOWN- SEND, AND ALFRED J. GUTZLER, OF LOS ANGELES, CALIFORNIA.

GAS-TRAP rLoar.

Original No. 1,432,221, dated October 17, 1922, Serial No. 504,086, filed September 29, 1921. Application for reissue filed January 29, 1923.

To all whom. it may concern Be it known that I, Minor: J. TRUMBLE, a

citizen of the United States, residing at Alhambra, in the county of Los Angeles I and State of California, have invented a new and useful Gas-Trap Float, of which the following is a specification.

This invention relates to oil producing equipment and particularly to the construction of gas traps for removing natural gas from the flow of oil from wells.

The pressure under which gas traps of this character are required to operate will during periods of surge reach 250 pounds,

and it has been customary to construct such floats, as are used for controlling the operation of gas traps, of heavy material to resist collapse during the periods of high pressure. Also it is very diflicultto 'fOIl'll a light weight float that will remain impervious to the oil when beingoperated under high pressure conditions as the warping of the material of which the float is constructed, due to the great pressure to which it is sub- I 26 jected, causes seam openings which allow the entrance of oil into the float, the presence of which therein decreases the bouyancy of the float and prevents its giving eflicient service. I

It is anobject ofmy invention to provide a float which cannot be collapsed by pressure existing within the interior of the gas trap in which it is used.

It is a further object of my invention to 5 provide a float which may be readily cleared of any collection of liquid entering the float due to leaka or other causes.

Other ob ects and advantages will be made evident hereinafter.

Referring to the drawing which is for H lustrative purposes only.

Fig. 1 is a vertical sectional view through a gas trap in which a float embodying my invention is shown.

Fig. 2 is a section taken on a plane represented by the line 22 of Fig. 1.

Fig. 3 is a vertical section through the float shown in Fi 1.

Fig. 4 is an en arged detail section illusl0 trating the manner 1n which the float arm is secured to the exteriorly extending shaft su rting same.

e gas trap with which I illustrate the Serial No. 615,750.

utility of my invention consists of a shell 11 into which oil and gas are delivered through an inlet 12, this oil andgas mixture flowing over a conical hood .13 and entering a receiving chamber 14 in which is situated a float 1 munication between the interior of the float and the interior of the gas trap and provides a means through which the external pressure may be transmitted to the interior of the float. I employ the term uarded to designate the manner in which t e end 32 of the tube 31 is directed downwardly so that oil splashed over the top of the float 15 will not enter thereinto through the tube 31.

It will be seen that the condition of pres sure upon the interior of the gas trap can have no collapsing effect upon the float as the pressure within the gas trap is communicated to the interior of the float through the tube .31.

There are times when the oil is delivered to the gas trap in the form of an emulsion and foam collects upon the surface of the oil in the trap, sometimes completely filling the space remaining above the oil level in which case some of the foam will pass through the tube 31 into the interior of the float. Also due to the presence of sand, the valve 20 might become inoperable with the floatin its lowest position within the chamber 14. The level of oil then rising within the chamber 1 1 would submerge the float 15 due to its inability to rise therewith and oil would enter the float through the tube 31. Also a slight leakage in any of the seams of the float would permit a collection of oil within the interior of the float.

I. provide a simple and expedient means low construction. This arm 16 is secured to the shaft 17 as shown in Fig. 4, by means of a split block which is drilled to provide a passage 41 to coincide with an opening 42 into the shaft 17. The shaft 17 extends through a suitable stufling box 43 and has upon its outwardly extending end 4* a valve 45 which is kept normally closed. At

,from interior collections of oil, the weight of which would detract from the effectiveness of action of the float in operating the valve 20..

Under normal operation of the trapthe float 15 assumes the position shown in full lines, Fig. 1, in which position the valve 20 is partially open permitting a discharge of oil from the trap throu h pipe 50, the inner end of which extends ownwardly into the trap. The gas from the oil collects under the cone 13 and is discharged from the trap through pipe 51. In the event a surge of oil is discharged into the trap through the pipe 12, the float will assume the dotted line position shown in Fig. 1 due to the rise of oil in the trap resulting in a'greater opening of the valve 20 and a greater discharge of oil until the rate of flow of the incoming and outflowing oil has become equalized.

I claim as my invention:

1. In gas trap float mechanism, the combination of: walls providing a receiving chamber; aifloat arm within said chamber having commuiiication with the exterior of said receiving chamber; a float mounted upon said arm; means associated with said 2. Float mechanism for gas traps comprising: a hollow float arm within the trap having communication with the exterior of said trap; a float mounted upon said arm;

means associated with said'float furnishing guarded communication between the interior of said float and the interior of said trap whereby the ressure existing in said trap is transmitted to the interior of said float; and tubing connecting between the interior of said float and the interior of said arm whereby collected liquid may be ejected from the interior of said float by the pressure therein.

Float mechanism for gas traps comprising: a hollow float arm within the trap having communication with the exterior of said trap; a float mounted upon said arm; means associated with said float furnishing guarded communication between the interior of said float and the interior of said trap whereby the ressure existing in said trap is transmitted to the interior of said float; tubing connecting between the interior of said float and the interior of said arm whereby collected liguid may be ejected -MILON J. TRIIMBLE.

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