US2037896A

US2037896A - Bottom hole gas bean

Info

Publication number: US2037896A
Application number: US746675A
Authority: US
Inventors: Marcus W Haines
Original assignee: TECHNICRAFT ENGINEERING CORP
Current assignee: TECHNICRAFT ENGINEERING CORP
Priority date: 1934-10-03
Filing date: 1934-10-03
Publication date: 1936-04-21
Anticipated expiration: 1953-04-21

Description

April 1936- M. w. HAINES BOTTOM HOLE GAS BEAN Filed Oct. 5, 1954 IN VEN TOR /%4ecus W fizz/v55 5r Ar GENE-Y reamed Apr. 21, rest erein LE GAS Marcus "W. ll-llaines, Long Beach, Caliii, assignor of one-half to lleclbn Los Angeles, Calif., a

Application @ctober 3,

9 Claims.

The present invention is an improved bottomhole gas bean and relates to an oil well flow device.

The primary object of the invention is the provision of a device for suspension from the lower end of a tubing string, which, when submersed in gas-laden oil, can be used to close the bottom end of the string until the device reaches a level in a well which operation is to be conducted and which carries means riorlopening and closing ports through which fluid can enter the string.

The invention contemplates means, operable from the mouth of the well and by rotation of the tubing string for regulating the gas-oil ratio of a producing well and thereby conserving the gas, natural to the formation, for its full utilization in lifting 011 to the surface.

In the accompanying drawing, Figure 1 is a view, half in elevation and half in section, of a typical form of my device.

Figure 2 is a transverse section of a tube section having ports in its wall, the section being indicated by the dotted line II-II of Figure 1, and Figure 3 is a transverse section of Figure 1 taken 25 on the line IIIIII of said figure.

Referring to the drawing, the numeral l indicates a section of tubing string from which my device is suspended.

Threaded at 2 to the tubing l is a tube section 3, threaded at the end remote from member 5, asv

at t, for engagement with a closure or cap 6. The tube 3 is provided with ports, slots, or apertures 7, here shown as four in number and spaced in equi-distant relation, as shown in Figure 2.

Tube 3 is threaded exteriorly at t for engagement with an internally threaded sleeve member 9 and clearance is provided at it so that sleeve 9 can be moved upwardly on said threads to diminishthe capacity of the ports l by covering a portion thereof.

Integral with, or secured to, tube 3 is an annular flange i2, the lower surface of which is ground to a taper, as indicated at 93, corresponding to a ground seat id in a hard-face ring it secured to the upper end of tube Flange l2 serves as a stop, limiting the upward movement of sleeve Q, and the ground confronting surfaces and id form a valve making the tube fluid tight when said sleeve is threaded to upper, or closed, posi- 0 tion indicated in dotted lines in Figure l.

The lower end of sleeve ti carries a gasket ll, of rubber or suitable expansive material, which, when compressed between the end or tube 3 and a metal ring it, expands against the wall of said tube to exclude sand from the threads Screws icrai't Engineering Corp, corporation rear, Serial No. users (or. lee-e) l9, threaded into sleeve 9 and provided with clearance through ring it and gasket ll, efiect said compression.

In order to hold tube 3 against rotation when the tubing string l is rotated to Operation to the lower end of an closed at the bottom by My device is secured open tubing string and cap 6.

The string is lowered into the well to a point where the density of the oil makes production possible with a minimum depletion of gas.

It is a well-known fact that fluid in the upper levels in an oil column is frothy and of a lighter gravity than that below.

My device can be lowered from time to time as well pressure subsides and the ports 7 can be regulated in capacity by rotation of the tubing string 5.

The bow springs 2i frictionally engage the inner walls of a surrounding casing and hold the sleeve 9 against rotation. Rotation of the tubing the device is employed.

- The confronting surfaces of tube and sleeve it are ground to a close fit to prevent sand from entering threads 8.

The ports '1! are diametrically opposed so that the nullified by that of fluid entering through the opposite port. which prevents'sandvAll valves and inlet the character described are subjected to equivalent of a sand sand enters at high velocity.

By arranging the ports as described and making them of uniform capacity, this destructive force is eliminated.

I claim:

l. A device of the character disclosed comprising; a tube section including radially directed ports in its sidewalls and means at its upper end for attachment to a tubing string; a sleeve en= cutting.

force of fluid entering one of said ports will This is an advantageous feature circling said tube adapted when moved axially with respect to said tube section to open or close the ports in said tube; and means including complementary configurations on the confronting surfaces of said sleeve and said tube ior imparting axial movement of said sleeve relative to said tube when the tubing string to which said tube is attached is rotated.

2. A device of the character disclosed comprising; a tube section including radially directed ports in its sidewalls and means at its upper end for attachment to a tubing string, a sleeve, encircling said tube adapted when moved axially to open or close the ports in said tube, means for anchoring said sleeve against rotation when said tube is rotated; and means for causing axial movementof said sleeve upon rotating said tube relative thereto.

3. The combination with a well casing and a tubing string within said casing; of a tube section connected to said string and having ports in its side walls; a sleeve surrounding said tube section and arranged to cover said ports; and interengaging means on said tube and said sleeve for moving said members relatively to open and close said ports.

4. The combination with a well casing and a tubing string within said casing; of a valve body connected to said string and provided with ports through its wall communicating with the interior of the tubing string above the lower end of said valve body; a sleeve valve surrounding bow spring means carried by said sleeve valve and coacting with the surrounding casing, for anchoring said sleeve valve against rotation when said tubing string is rotated; and an arrangement for causing said sleeve valve to cover and control said ports in response to rotation of the tubing string.

5. In a bottom hole gas bean, the combination with a tubing string; of a valve body in the form of a tube section depending from the. tubing string, said valve body including radially directed ports in its side walls near its upper end, and an annular valve seat externally of the valve body and beyond the one extremities of said ports; a

said ports being sleeve fitting said valve body and adapted to cover and control the effective area of said ports, said sleeve including an annular valve element adapted when said sleeve has covered said ports to coact with said valve seat to seal said ports.

6. In a bottom hole gas bean, the combination with a tubing string; of a tubular valve body including vertically extendinginlet ports above its lower end and adapted to admit well fluid into the valve body and tubing tring thereabove,

diametrically disposed and tending to form nozzle elements whereby the streams of fluid entering therethrough impinge against each other to minimize wear otherwise caused by abrasive particles suspended in the fluid; and

annular valve meanssurrounding the valve body and adapted to regulate and close said ports; said valve means including a valve element secured to the valve body and turnable therewith, a sleeve carrying a coacting valve element and screwthreadedly mounted on said valve body, and means for restraining said sleeve from rotation whereby rotation of the tubing string and valve body causes axial movement of the sleeve.

'1. In a bottom hole gas bean, the combination with a tubing string; of a valve body in the form of a tube section depending from the tubing string, said valve body including radially directed walls near its upper end, and an annular valve seat externally of the valve body and the one extremities of said ports; a sleeve fitting said valve body and adapted to cover said ports, said sleeve including an annular valve element adapted to coact with said valve seat to seal said ports; means for anchoring the sleeve against rotation when the tubing string and valve body are rotated; and means for causing axial movement of the sleeve upon rotating said tubing string and body member to regulate and close said ports.

8. In a bottom hole gas bean: a pair of tubular members screwthreaded one into the other; means associated with one of said tubular members engageable with the walls of a well bore and tending 'to restrain its associated tubular member against rotation; a tubing string connected with the other tubular member and adapted to rotate the same whereby said tubing members may be moved axially with respect to each other; and a plurality of ports in the side walls of one tubular member, the other tubular mem her having a portion moveable past said ports to control the effective area thereof.

9. In a bottom hole gas bean: a pair of tubular members screwthreaded one into the other; means associated with one of said tubular members engageable with the walls of a well bore and tending to restrain its associated tubular member against rotation; a tubing string connected with the other tubular member and adapted to rotate the same whereby said tubing members may be moved axially with respect to each other; a plurality of ports in the side walls of one tubular member, the other tubular member having a portion movable past said ports to control the effective area thereof; and a pair of coacting valve elements for said tubular members,

said valve elements being axially engageable to MARC S W. HAINE