US2588521A - Control valve for pressure bailers - Google Patents

Description

w. R. HANLINE Erm. 2,588,521

CONTROL VALVE FOR PRESSURE BAILERS March l1, 1952 Filed Aug. 7, 1948 2 SHEETS--SHEET l *Y* I 7l 'I 7 f/Z I 5 l I l f i I.I I I 7 .Z L I I l I I I I I. I

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CONTROL VALVE FOR PRESSURE BAILERS Filed Aug. 7. 1948 2 SHEETS- SHEET 2 Patented Mar. 11, 1952 Walter R. Hanline and James W. E. Hanes, v Ventura, Calif. Y

Application August 7, 1948, Serial No. 43,135

"Our invention relates to a control valve for pressure bailers of thetype used in oil wells Where 'it is desired to remove material from the well, such as sand, mud, sludge, or other materials.

An object of our invention is to provide a novel control valve which will effectively seal the pres- "sure top of the bailer as the tool is being run int the well, or removed from the well.

Another object of our invention is to provide a novel control valve for pressure bailers in which 'the valve automatically seals the pressure top of the bailer while the bailer is being suspended in the well.

Still another object of our invention is to provide a novel control valve for pressure bailers which will seal 'the pressure top of the bailer, by relative longitudinal movement of the valve structure and the body of the bailer, thus controlling the venting of the pressure top to the outside.

Other objects, advantages and features of invention may appear from the accompanying `gdr a .wing, the subjoined detailed description and the appended claims.

Y, lnfthefdrawing 1 Figure l is a partial longitudinal, sectional View of the upper portion of our pressure bailer.

Figure 2 is a partial longitudinal, sectional View of the lower part of the bailer.

Figure 3 is a partial longitudinal, sectional view of the upper part of the bailer, showing the valve in closed position.

, Figure 4 is a longitudinal, sectional view of the upper part of the bailer, showing a modied form of control valve, the valve being closed.

Figure 5 is a view similar to Figure 4, and showing the valve in open position.

Referring more particularly to the drawing, our pressure bailer includes a pressure seal top I, a plunger barrel section 2, and a dump bottom 3. A bail 4 is attached to the upper end of the pressure top I, and a cable is attached to this bail so that the tool can be moved into or out of the well, as desired. The pressure top I includes an outer tube 5, into the upper end of which the bail 4 is threaded, and this bail acts as a closure for the top of tube 5 preventing flow of fluid therethrough. A fitting 6 screws into the lower end of the tube 5, and acts as a guide for the pipe 1, which extends into the tube.

A ring 8 is Xedly attached to the pipe l, providing a shoulder 9 on the bottom thereof, which engages the shoulder I0, on the top of the fitting 6, to limit the downward movement of the pipe 3 Claims. (Cl. 166--19) formed in the tube 5, for the purpose of permitting fluid to circulate outwardly from the tube 5, as shown by the arrows in Figure 1, and as will be more specically described. A'eollar I2 is nxedly mounted within the tube 5, above the ports I.I, and the upper end of the pipe 'I is provided with a plurality of ring packings I3, which engage the collar I2, in the lowered position of ,the pipe to seal olf the upper pressure chamber I4. The pipe 'I extends into the top of the plunger barrel section 2 of the tool, and the plunger barrel section 2 is` xedly secured to the upper end of the dump bottom 3. The pipe 'I extends through a packing gland l on the top of the plunger barrel section 2, and lugs l on the bottom of pipe 'I prevent the pipe from pulling out ofthe section 2. 1

The construction of the plunger barrel section 2, and the dump bottom 3, is usual and well -known in the art. The dump bottom 3 is open at the bottom as shown at I5, and a flap valve I6 is hingedly mounted above the bottom of the tool. The valve I6 is free to open or close, depending on whether there is pressure on the bot;-

' tom or the top ofthe valve. The bailer is dumped by aligning the port l1, with the port I8, this being accomplished by rotating the outer part of the dump bottom until these ports match.

In operation, the tool is suspended on the cable (not shown) and the weight of the pipe 1, and the plunger barrel section 2, and dump bottom section 3, will cause the pipe to slide downwardly Within the pressure top I, until the shoulders 9, I0 abut, at which time the ring seals I3 will be within the collar I2, thus preventing the circulation of fluid out of the ports I I, while the tool is being moved downwardly in the well. As the tool is dropped, the valve I6 will be opened, and material can flow upwardly into the tool, while the tool is being lowered. When bottom is reached, or when the tool strikes a sand bridge, the pressure top I will slide downwardly on the pipe `I, until the packing I3 is above the collar I2. At this time, fluid can pass upwardly through the pipe, and out through the ports I I, as shown by the arrows in Figure 1. The ow of llud through the ports I I permits sand to be taken at the bottom of the tool, and moves upwardly past the valve I6, until the bailer is lled. Upward movement of the suspending cable will now close the ports II, as shown in Figure 3, and the valve I 6 also closes due to the Weight of sand upon it. The material within the bailer is now held under the pressure of the static head at the botin the tube 5. A plurality of vent holes II are tom of the well.

When the surface 'is reached, and the ports Il, I8, are aligned, the pressure within the bailer will automatically expel the sand, and other material within the bailer. In Figures 4 and 5 is shown a modied form of packoi for the upper end of the pipe 1. In this instance we employed an expandable rubber packing ring I9, which surrounds the upper end of the pipe 1, and a collar 20 is threaded onto the upper end of the pipe and bears against the top of the packing, I9.

The lower end of the packing I9 rests on a ring 2I, and this ring rests on a seat 22, above the ports I I. It is evident that downward movement of the pipe 1 would cause the packing I9, to be compressed and` expand to the position shown in Figure 4. When the weight of the pipe l, and its attached parts is relieved, the pipe I will move upwardly and the packing I9 will contract to the position shown in Figure 5 so that the material within the bailer can vent through the ports II.

Having described our invention, we claim:

l. A control valve for pressure bailers, said bailer including a tubular pressure top, a plunger barrel and a dump bottom, said tubular pressure top having ports extending through the wall thereof, a pipe extending into and slidably mounted in said pressure top, and also extending through said plunger barrel and into said dump bottom, said pipe being xedly attached at its lower end t'o the dump bottom, means in the pressure top engageable by said pipe to limit the longitudinal movement of said pipe in the pressure top, said pressure top including an area of reduced diameter above said ports, packoff means on the upper end of said pipe engageable with the reduced diameter area of the pressure top to seal oilc said pressure top above said ports, said packoff means being of less diameter than the inside of the pressure top above said area of reduced diameter, said packoff means engaging the area of reduced diameter only on downward movement of the pipe relative to the pressure top.

2. A control valve for pressure bailers, said CSI bailer including a tubular pressure top, a plunger barrel and a dump bottom, said tubular pressure top having ports extending through the wall thereof, a pipe extending into and slidably mounted in said pressure top, and extending through said plunger barrel and into said dump bottom. said pipe being xedly attached to the dump bottom, means in the pressure top engageable by said pipe to limit the longitudinal movement of said pipe in the pressure top, a collar in the pressure top above said ports, said collar being of lesser diameter than the inside diameter of the pressure top, and ring packing on the upper end of the pipe adapted to enter and seal on with the inside of the collar, to seal off said pressure top above said ports on downward movementof the pipe relative to said pressure top.

3. A control valve for pressure bailers, said bailer including a tubular pressure top, a plunger barrel and a dump bottom, said tubular pressure top having ports extending through the wall thereof, a pipe extending into and slidably mounted in said pressure top and extending through said plunger barrel and into said dump bottom, said pipe being fixedly attached to the dump bottom, means in the pressure top engageable by said pipe to limit longitudinal movement of said pipe in the pressure top, a collar xedly mounted in the pressure top above said ports. ring packing on the pipe adapted to move longitudinally into said collar to seal off the pressure top above said ports on downward movement of the pipe relative to said pressure top.

WALTER R. HANLINE. JAMES W. E. HANES.v

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,957,100 Diepenbrock May 1, 1934 2,166,489 Gates July 18, 1939 2,191,223 van stone et a1. Feb. 2o, 1940

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