US1327583A - Assigetoe to zichaeb gtjibersom - Google Patents

Description

Patented Jan. 6, 1920.

R 0 T N E V N STATES PATENT @EFllll PAUL ARBON, OF TULSA, OKLAHOMA, ASS'IGNOB TO RICHARD GTIIBERSON, 0F TULSA,

OKLAHOMA.

SAND-TRAP.

Application inea Api-i1 21, 191s.

To all whom t may concern:

Be it known that I, PAUL Anson, residing at Tulsa, in the county of rlulsa and State of Oklahoma, a subject of Great Britain, have invented or discovered certain new and useful Improvements in Sand-Traps, of which improvements the following is a specification.

rlhe presence of float 'sand in most oil wells is the cause of considerable labor and expense in the pumping of the oil, as the sand after being carried past the foot valve at the bottom of the tubing will settle down around the valve and retard or wholly prevent further flow of oil into the tubing. When the valve recessses are thus clogged, it is necessary to pull the sucker rods and the tubing to remove the accumulated sand. The laboi` and loss of production render this operation very expensive to the producer.

The object of the invention described herein is to provide means for trapping a large percentage ofthe sand carried past the foot valve, and also to provide for the removal of the foot valve with the working barrel when the operation of the valve is interfered with by an accumulation of sand. The invention is hereinafter more fully described and claimed.

In the accompanying drawing forming a part of this specification is shown in sectional elevation the lower portion of the tubing for a well having combined therewith the improvements claimed herein.

ln the practice of the invention a trap chamber is connected to the lower end of the tubing 1 at a point below that portion of the tubing in which a pump barrel 2 of the usual or any suitable construction operates. This trap chamber is formed by a section of tubing 3 preferably of a. diameter sub-A stantially greater than that of the tubing 1 and having its end portions swaged down so that they may be connected to the lower end of the tubing 1 and to the anchor tube 4 by coupling sleeves 5 and 6. The coupling 5 is of the type usually employed for connecting the tubing sections, but the coupling 6 is provided with a diaphragm 7 having an opening therethrough to permit of the flow of oil from the anchor tube. The edges of the opening are shaped to form a seat for the lower end of a hollow plug 8 which is connected by a ythreaded sleeve 9 Specification of Letters Patent.

Patented Jan. 6, 1920.

Serial No. 291,582.

to the lower end of tube section l() having an external diameter less than the internal diameter of the tubing 1. The foot valve consists of a ball or movable member 11 and a seat 12 which is supported by the plug 8. In order to hold the ball in operative relation to the valve seat, a pin 13 is passed through the tubing section l0 a short distance above the ball. A rod le having its upper end connected by a yoke 15 to the pump barrel 2 extends down into the tubing l0 a distance greater than the range of movement of the pump barrel when operated to remove oil from the well. @n the lower end of the rod is screwed a head 16 so constructed as to permit the flow of oils past it but adapted to engage the shoulder 17 and the upper end of the tubing section so that the latter and the foot valve may be withdrawn from the well with the pump barrel. The tube section is perforated adjacent to its upper end to permit the ilow of oil into the trap chamber.

lt is characteristic of the improvement described and claimed herein that as the tube section 10 is substantially smaller than the tubing 1 the oil will iiow with sul'iicient velocity through the tube section to carriT a very large percentage of sand into the trap chamber in which the sand will have an opportunity to settle on account of its diameter being greater than that of the tubing and its length greater than the range of the pump barrel.

As the greater portion of the sand will pass into the trap chamber, the accumulation of sand in the bottom of the tube sec tion 10 will be slow and when the valve bccomes clogged the tube section with the foot valve can be withdrawn through the tubing 1 which need not be pulled.

l claim herein as my invention:

l. ln an apparatus for pumping wells the combination of a trap chamber adapted to be connected to the tubing and anchor tube, a movable tube section of less diameter than the tubing of the well and projecting up into the trap and adapted to discharge into the trap, a check valve carried by the tube section and means whereby the tube section may be connected to the working barrel of the well.

2. In an apparatus for pumping wells the combination of a trap section having a greater internal diameter than the tubing, means for connecting said chamber to the tubing, and the anchor section, a removable tube seetion of less diameter than the nternal diameter of the tubing and projecting up into the trap Chamber, a check valve carried by the removable tube section, a movable rod adapted to engage the removable section and adapted to be connected to the Working barrel of a Well. 10

In testimony whereof, I have hereunto' set my hand.

PAUL ARBON.

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