US1439280A - Sand trap for oil wells - Google Patents

Description

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Patented Dec. 19, 1922,

innata JAMES ALBERT WESTMOBELAND, OF VIVIAN, LOUISIANA.

SAND TRAP FOR lOIL WELLS.

Application filed April 17, 1922. Serial No.-553,'7'58.`

To ZZ w/wm t may concern.'

Be 1t known that I, JAMES A.' llirisrironn- LAND. a citizen of the United States,y residing at Vivian, in the parish of Caddo and#l State ot Louisiana, 'hai/'e' inventedvcertain new and useful Improvements in Sand Traps for Oil Wells; and I do declare the following to be a full, clear, and exact description of the invention7 such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to an ,improved sand trapfor use in conventional types of oil wells and the like.

The principal object of the invention is to generally improve sand traps for this purpose by providing one which simply comprises a plug adapted to be connected with a pipe coupling and to be arranged between the ends of the pipe to provide a partition,y this plug being constructed so that a valved conduit can be connected therewith for controlling the passage of the fluid therethrough.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanyingdrawings forming a part of this specific-ation and in which like numerals are employed to designate like parts throughout the same:

Figure l is an elevational view with parts broken away and shown in section, of a conventional type of oil well equipped with a sand trap constructed in accordance with this invention.

Figure 2 is an enlarged sectional view of the intermediate portion ofthe device disclosing the structure of the sand trap more clearly.

, In the drawings, the usual well casing is shown as being composed of a suitable number of sections of pipe 1 connected together by the usual forms of couplings 2. The traveling valve is designated generally by the numeral 3 and the usual combined anchor and strainer by the numeral 4t. It is between the last named part and the traveling valve that the sand trap is preferably located and actual use of the trap has disclosed that it will work very effectively if arranged at the juncture of the well casing and strainer. Therefore, I have so shown it.

To enable a clear understanding of the trap to be obtained, I will direct especial attention to the enlarged sectional view ap-4 pearing in Fig. 2. In forming the trap, I simplyrfmake use of an externally screwthreaded plug-5 and I arrange'this between the-ends ofthe pipe land engage thescrewthreads thereof with the` internal screwthreads of the usual coupling 2. By disposing the plug at this point, a partition is formed on which the sand settles. The plug is formed with a central bore 6 and is equipped with an upstanding tubular eXtension 7 which forms an integral .part thereof. This extension is internally screw-threaded at its upper end and a conduit 8, having a check valve 9 at its upper end, is connected thereto. The aforesaid bore 6 is internally screw-threaded at its lower end and a relatively small depending tube 10 is connected thereto to restrict the passage of fluid and sand from below the partition into the chamber formed bythe arrangement described.

In practice7 the end of the strainer 4; and

pipe l will be disposed in abutting relation with the plug to prevent accidental displacement thereof. In operation, the oil and sand carried thereby is drawn through the apertures in the anchoring pipe 4 and is sucked upwardly through the pipe 10 and valved conduit and the sand is permitted to settle down and deposit on the upper side of the plug and is trapped at this point and prevented from being carried upwardly and interferino with the operation of the traveling valve. onsequently, the latter is rendered very effective and the usual packing cups associated therewith areprevented from being unduly worn.

It is obvious from the foregoing descrip-4 tion that the plug can be easily and very inexpensively manufactured and used at the point indicated with any suitable type of a valved conduit. In view of its eXtreme simplicity and low cost, the invention is doubtless an improvement over other prior patented and marketed inventions for the same purpose.

By carefully considering the description in connection with the drawings, persons familiar with devices of this class will doubtless be able to obtain a clear understanding of the invention. Therefore, a more lengthy and detailed description is deemed unnecessary.

Since probably the best results may be obtained with the construction and arrangement herein shown and described, this is taken as preferred embodiment of the y invention. However, l Wish it to be under` stood that minor changes coming Within the scope of the inventionas claimed may be resorted to if desired.

I claim: o

In a sund trap for Wells, a Combined anchor and strainer pipe, tubing or' the same diameter as said pipe, a coupling connecting said tubing with said strainer pipe, said coupling being of uniform diameter and having internal screw-threads extending from end to end, a plug having a threaded periphery engaged with the threads of said coupling, said plug being arranged between the ends or' Said tubing and pipe to form a partition and to provide a sand trap, said '3lu y bein formed with a central onenino' C C:

and With a neel; rising from said opening to permit the passage of the oil from the strainer into the tubing, said neck being comparativel)v small, and a comparatively small valved conduit connected to and rising from said neck.

ln testimony whereof l have hereunto set myv hand.

JAMES ALBERT l/ESTMORELAND.

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