US2253092A - Packer - Google Patents

Description

' Aug. 19, 1941. A. 'FRAYNGER PACKER Filed Juxie 22, 1937 5 Sheets-Sheet 2 INVENTOR. ALBERT PRANGER BY V. 03 Ma.

ATTORNEY.

1941- A. PRANGER PACKER Filed June 22, 1937 3 Sheets-Sheet 3 INVENTOR.

ALBERT PRANGER W w @Mu,

. ATTORNEY.

' Patented Aug 19, 1941 racxaa Albert Pranger, Dallas, Tex., assignor to The Girl- .berson Corporation, Dallas, Tex acorporation of Delaware Application June 22, 1937, Serial No. 149,802

14 Claims.

The object of this invention is to provide a packer designed to be used in conjunction with an electrically driven bottom hole pump. Packers have heretofore been designed suitable for packing ofi the space between the well tubin and the well casing, but when it is necessary to employ a cable which must pass the packer, complications arise, and it is the object of this invention to provide a packer suitable to receive the cable and make an emcient packeraround the tubing and the cable, and extending to the well casing and one which is not dependent on the fluid pressure above the packer to effectively set the same.

It has heretofore been proposed to provide swabbing cups withholes adapted to receive a cable, but these swabbing cups are operated entirely' by the pressure above the same. It has been found that they'will leak and that they are notsuitable for this purpose.

My improved packer is used in combination with a bottom hole pump and gas lift installations. In such installations the pump connected to the lower end of the tubing pumps the fluid from the bottom of the well through the tubing into the space between the tubing and the casing proved construction and is a continuation of the lower part of Fig. 1.

Fig. 2 is a view similar to Fig. l and showing the packer in its set position.

Fig. 2a is a view similar to Fig. 10 showing the parts in the position in which they would be when the packer is in a set position.

Fig. 3 is a top plan view of the thimble for the packer, taken on the line 3-! oiFlg. 1.

Fig. 4 is a cross-sectional view on the line 4-4 of Fig. 1. i

Fig. 5 is across-sectional view on the line 8-8 of Fig. In.

Fig. 6 isa cross-sectional view of the mandrel and spring housing showing the bleeder in the position in which the parts would be before the packer has been set.

Fig. 7 is a view similar to Fig. 6showing the parts in their set position.

The mandrel I is provided with a coupling 2, which is provided with holes 3 communicating with the interior of the mandrel and the space 4 above the packer and between the mandrel-and tubing and the well casing 5.

Below the coupling 2 is the packer 6. which at 7 its top 'and bottom is provided with a thimble I,

above the packer, while air or gas is admitted in the tubing above the packer which aerates the fluid above the packer and carries it to the surface.

Heretofore it has been proposed to use a packer the packer, but wherethe packer is set at a great distance above the pump, this is quite inconvenient and burdensome. My improved packer enables the operator to run the cable along the side of the tubing and through the packer, which not only packs oil? between the tubing and the casing, but alsoaround the cable.

Another object of the invention is to provide a structure whereby the gas pressure in the annular space below the packer can be released. I accomplish this by providing a bleeder, and the same bleeder can also be utilized to drain back to the bottom of the well the fluid above the packer. These and other objects of the invention will appear in the detailed specification and'claims which follow: I

The invention may be more readily understood by referring to the drawings, in which Fig. l is an elevational view partly in cross-section of the upper portion of my improved structure showing thepacker in the condition in which it would be lowered into the well.

Fig. 1a is a view of the lower portion of myime made in two sectiona each of which is semi-circular, as shown in Fig. 3, and each of which is provided with complementary tongues 8 and grooves 9. Bolts ill extend through the upper thimble, the packer, and the lower thimble, and are. screw threaded into the recovery collar II, which has a tubular connection H, which is screw threaded as shown in Figs. 1 and 2 to a spring housing l3.

The spring housing houses a helical spring i 4, the upper end of which abuts against a recovery ring l5, which, when the parts are in the position shown in Fig. 1, lies immediately below the lower portion of the tubular connection II. The lower end of the spring housing It is screw threaded to the head 'i 6, provided with the conventional tapered cam surfaces which receive the slips ll. It is therefore apparent that the lower thimble 1, the recovery collar H, the tubular connection II, the recovery ring 15, and the head It all move together as a unit.

The slips l'! are of course provided with the usual teeth l8, adapted, when the slips are ex panded, to engage the inner walls of the casing. These slips are connected to a control ring I! by means oi reins or links 20, which control ring I! is integral with the ring 40, being connected thereto by means of an annular spacer 2|. A plurality of friction springs 22 are secured to a collar 23, slidably mounted on the mandrel and I have provided. a packer whidh other, as shown in Fig. 6, until such time as the packer has been set. When the packer has been set, however, by rotating the gudgeon pin 29 to the right, as viewed in Fig. 1a, so that the said gudgeon pin would lie above the upper portion of i the long slot 21, and if the mandrel is lowered, the springs 22 will hold the sleeve 25 so that the said gudgeon pin would 'travelfliown the slot 21. The slips I! being held statiqhary, they will be expanded into engagement with the well casing as the mandrel is lowered, the spring housing and packer moving downwardly with the head ii;

The packer 6 is, as shown in Fig. 4, made in two sections, which are split vertically on the lines 34. and- 36, and the packer is provided with annular holes 31 and 38, the hole 31 receiving the mandrel and the hole 99 receiving the cable 99.

After the slips have been set, as above described, the bleeders 29 and 3| will be moved out of alignment with each other while the mandrel moves from the position shown in Fig. 1 until the collar 2 engages the upper thimble l. A continued downward movement of the mandrel will move the upper thimble ldownwardly, compressing the packer 6 into the position shown in Fig. 2, making an effective pack-off so that no oil or gas can pass around the outside of either the mandrel or the cable, and during this move-- ment the hole 3| in the mandrel I will be moved tubing and mandrel and out of the holes 9 above ,the packer, while/ gas under pressure wduld be forced downwardly through the tubing and outwardly through the holes 3 to aerate the oil in the space 4 above the packer, I

I! it is desired to bleed oil the oil above the ,packer allowing it to run back into the well, this can be accomplished by simply raising the man drel so that the oil can flow through the holes 3 and down through the mandrel and out through the holes 29 and 9|. This alsoserve's as a means to release the gas pressure below the packet in case it is desired to do so. 1'-

In using the word cable" in this specification and claims, I wish it to be understood that" is term includes not 0 lya flexible member, ut

will provide an eificient pack-off when desired. or course, the packer is inserted on the mandrel below the collar before it is run into the-well, and the construction of the thimbles and the packer itself is such as to enable the operator to easily and accurately position the same on the mandrel before it is run into the well. It is furthermore apparent that I do not depend upon fluid pressure above the packer to set it or to make a satisfactory seal, but I set the packer by means of the weight of the tubing and mandrel. It is furthermore apparent that, by the above construction, I have provided a bleeding means to release the gas pressure below the packer or to drain the fluid above the packer, which operations may be easily accomplished by a simple manipulation of the tubing string.

I realize that many changes may be made in the specific form of the invention as shown and described herein by way of illustration, and I reserve to myself the right to make all changes which may fairly fall within the scope of the appended claims. Having now described my invention,

I claim:

1. In combination with a mandrel and a cable,

a packer provided with holes adapted to receive the mandrel and cable, said mandrel and cable passing through said holes and means to set said packer by means of the mandrel.

2, In combination with a mandrel and a cable,

a vertically split packer provided with holes along said split, adapted to receive the mandrel and cable, said mandrel and cable passing through said holes and means to set said packer by means of the mandrel.

3. In combination with a mandrel and a pump cable, a, packer provided with holes adapted to receive the mandrel and cable, said mandrel and when the lower part of the packer is held stationary.

4. In combination with a mandrel and a pump cable, a packer provided with, holes adapted to receive the mandrel'and cable, said mandrel and cable passing throughsaid holes, thimbles on the upper and lower sides of said packer, means to hold the lower ,thimblestationary, and means whereby the upper thimble is moved downwardly by means of said mandrel tofcompress said packer said packer and set'the same.

refers as well to a t bi'ng which might be run alongside of the mandrel. The packer would manner in obviously work in precisely the same both instances.

From the above construction it'is aparent that allows a able and a mandrel to be run therethrough and which and set the same.

5. In'com'bination with a mandrel and a pumpcable, a packer provided with holes adapted to receive the mandrel and cable, said mandrel and cable passing through said holes, thimbies on the upper and lower sides of said packer, a slip assembly to hold the lower thimble stationary, and means whereby the upper thimble is moved downwardly by means/of said mandrel to compress 6. In combination with a mandrel and a cable,

packer provided with holes adapted to receive he mandrel and cable, said mandrel and cable passing through said holes, means to set said packer by means of the mandrel, and bleeding means whereby any oil which may be above the packer may be drained by gravity back into the well.

7,. In combination with a mandrel and a cable, a packer provided with holes adapted to receive the mandrel and cable, said mandrel and cable passing through said holes, means to set .said

packer by means of the mandrel, bleeding means whereby any oil which may be above the packer may be drained by gravity back into the well, and means to render the bleeding means inoperative when the packer is set.

8. In combination with a mandrel and a cable,

to the ports of the mandrel below the packer,

said mandrel serving. as a'means to bring said lower ports into communication so that any oil which may be above the packer may be drained by gravity through the upper ports and out of the lower ports.

10.In combination, a mandrel provided with two sets of ports spaced apart vertically, a packer between said ports, a member slidable on said mandrel and provided with ports corresponding to the ports of the mandrel below the packer,

said mandrel serving as a means to bring said lower ports into communication so that any oil which may be above the packer may be drained by gravity through the upper ports and outof the lower ports, said mandrel also serving as a means to close said lower ports to prevent bleeding.

11. In combination with a mandrel and a cable, a packer for said mandrel and cable, and bleeding means whereby any excess gas pressure below the packer may be released into said mandrel.

12. In combination, a mandrel, a packer for said mandrel, and a sleeve valve below the packer and controlled by, the mandrel, whereby any excess gas pressure below the packer may be released.

13. In combination, a' mandrel, a packer for said mandrel, a sleeve valve positioned below said packer and operatively connected to said mandrel, whereby any excess gas pressure below the packer may be released. I

14. In combination, a mandrel, a packer therefor, a housing operatively connected to: said packer, and a sleeve valve positioned below said packer and operatively connected to said mandrel and housing, whereby any excess gas pressure below thepacker may be released.

. ALBERT PRANGER.

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