US927874A - Packer for oil, gas, and water wells. - Google Patents

Description

L. B. ROBINSON. PAGKER r01; OIL, GAS, AND WATER WELLS.

APPLICATION FILED APR. 11, 1908.

Patented July 13, 1909.

ITED. STATES PATENT OFFICE.

LAWRENCE E; ROBINSON, OF GOFFEYVILLE, KANSAS.

\ rfaexnn FOR OIL, ens, AND WATER WELLS.

' To all whom it may concern:

Be it known that I, LAWRENCE E. ROBIN- soN, a citizen of the United States, residing at Coifeyville, in the cppntyof Montgomery and State ofKaiisas, have invented new and useful 1m rovements in Packers for Oil, Gas, and atex; Wells, of. which the follow ing is a specification.

7 his invention relates to a packer device for use inoil, gas and water wells, and has for its object the provision of means for faclillitating the packing of the walls of a we A Another object of the invention is the provision of a peculiarly constructed, flexible sleeve that is reinforced, and which sleeve is mounted u on a frame that is capable of being lengt iened or shortened for the purpose of facilitating the packing operation by the compressing and expanding or stretching of the sleeve.

A further object of the invention is the provision of means for straightening a yieldable or rubber sleeve after it has been compressed, and also to facilitate the removal of the sleeve from the well after it has been drawn to its original position, thus avoiding the usual difficulty of removin a packer, as is experienced when the rub r remains in a collapsed condition.

I With these and other objects in view, the invention consists of certain constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings: Figure 1- is a view, in side elevation, partly shown in section, of a device constructed in accordance with the present invention. Fig. 2 is a view, in side elevation, shown partly in longitudinal section, and showing the sections of a frame telescoped and the reinforced rubber or yieldable sleeve compressed. Fig. 3 is a horizontal, sectional view taken on line 3, 3, Fig. 2.

Referring to the drawings 1 designates the internally -threaded annular members or' collars which constitute a holding device for receiving the end-links of the chain 7, hereinafter described. The annular members 1 are threaded upon threaded-portions formed upon the outer face of the telescoping end Specification of Letters Patent.

Application filed April 11,

Patented July 13, 1909.

1998. Serial NO. 426,546.

sections 2 and 3 of the metallic fraine, constituting a cylinder or casing. Each portion of the frame is provided with a reduced wedge or end-section 4 which is threaded, at its inner end, into the end of the telescoping section, 3, and its outer end is externally threaded for receiving a coupler 6. The sections 2 and 3 may be secured against sliding movement, one upon the 5, which threaded structure comprises threads, substantially square in cross section, upon the inner ends of said sectionsso that, through the medium of a pipe or tube connected to the upper coupler 6, the upper section 3 can be rotated for either unscrew ing the same, or screwin the sameupon the lower section 2; attac ed to the lower coupler. 6 is, preferably, an anchor, of any suitable structure, which is adapted to have a portion extend into the coupler, and the anchor will hold the packer-device at any desired distance from the bottom of the well, the distance depending upon the length of the anchor. The anchor attached to the coupler 6 will also hold the lower section 2 of the packer-device against rotary movement, which will permit the operator to retate the upper section 3 for threading the same upon the lower section, when it is desired to either adjust the telescoping sections ,to their normal position, Fig. 1 or to loosen the upper section, so that the upper section can be reciprocated upon the lower section for causing the flexible sleeve 9 to be compressed or lengthened, resultingin the sleeve, when compressed, engaging the Walls 10 of the well.

The sleeve 9 is, preferz-ibly, formed from rubber, and the chains 7, constituting reinforcing, flexible, metallic n'1eans,-are, preferably, embedded in the rubber, and vulcanized therein, and the end-linl s 6- are fastened, in any suitable manner, to the annular members or collars 6, as hereinafter stated. 'lhcrefore, it will be noted that, by forcing the upper section 3 downward, through the medium of any suitable conneoting means fastened to the upper collar 6, the rubber sleeve 9 will be compressed between the end-collars G, and causing said other, by means of the threaded structurebottom 0 sleeve to expand and engage the walls of the well, or, upon drawing upward upon the section 3, the rubber sleeve 9 will be stretched, consequently, removing the sections of-the device to their normal position,

reinforced rubber sleeve compressed to the. wall; this operation is accomplished after the packer,- is lowered in the well by means of the tubin attached to'the upper coupler, as stated be ore, and the anchor, or tubing, or other suitable means attached to .the lowercou ler, is in engagement with the f the well; the anchornot only properly spaces .the packer from the bottom of the well, but also offers or produces a resistance by means of which the square threaded connection, for fastening the telescoping sections together, is released or unscrewed by making several turns upon the upper section of the frame or casing.

When removing the device from the well,

it will be obvious that the upward-strain (caused by means of the power connection with the tubing of the upper coupler 6, the chain members 7, runnin longitudinally of the yieldable or rubber s eeve,) straightens up and draws the flexible sleeve back to its original position, as when first placed into the well, and thus allows a'free removal of the packer from the well, permitting the sediments to pass the same freely, as hereinbefore stated.

From the foregoing description, it will be obvious that I have provided a hollow acker device which comprises a sectionalrame,'which sections telescope, one upon the other, andmounted upon the frame is a peculiarl constructed yieldable sleeve orcasing; the frame or casing provided with means at its ends for'permitting the yieldable or rubber, reinforced sleeve to be compressed or lengthened at the will of the operator.

It is to be noted that the beveled, annular portion 2 constitutes a wed ed-structure, which, when one section is s id upon the other section, assists in forcing the rubber sleeve, or yieldable filling means, outward against the wall 10 of the well.

I have found from practical experience that the lower portion 2 is held rigidly by resting on the bottom of the well, whereasportion 3 is movable. At that point where portions 2 and 3 pass through the collars, in

per T which the chains are embedded, said portions are loosely threaded for a considerable greater distance than the junction of members 2 and 3. About two turns is sufiicientthrough the collars, the threading is twelve to the'mch. Therefore, the distance inthreading would require twelve turns of the uportion to one at the motion referred to. e different parts oft 'e packer are assembled as follows, when being manufactured: The lower section 2 of the packer is slid upon the upper section 3 by means of havin the lower portion detachablev from the ower end of the section 2 and it will be obvious that-section 2 can beeasily slid over the top of section3. After ' sectlons 2 and 3 have been assembled, the lower section 4 is thread- 6g upon the internal threaded-portion upon t e members 1-,,in which are cast or molded links 6 of the chain 7, are threaded upon the externalthreaded-portions of the sections 2 and 3, as shown in Fig. 2, and to facilitate the mounting of saidannular members upon the sections 2 and .3, the sections will be in a position similar to that shown in Fig. 2, so as to allow-the difi'erent sections to easily turn upon each other and revent the twistmg of the chain 7, while t e annular members are being threaded upon one of the sections. After all of the sections have been assembled, the packer is then coated with rubber, 'and' thereb embedding the chain 7 and forming a yi dable sleeve as hereinbefore described. It will be obvious that when the packer is assembled, as previously described, the sections 2 and 3 can easily slide uponeach otherand the threaded structureower end of section 2. The annular 5 can engage each other and hold the packer in an extended position as shown in Fig. 1.

WhatI claim is:

1. A device of the character described, comprising a rubber packer sleeve provided with a chain embedded therein, and means connected to the ends of 'said'chain for compressing, and lengthening said sleeve after the same has been com ressed.

2. As a new article o manufacture, a rubber acker sleeve provided with a chain embed ed therein, and the chain extending, at its ends, beyond I the ends of said packer sleeve.

3. A device of p the character described, comprising a frame formed ofsections, one adapted to slide upon the other,- a rubber packer sleeve provided with a chain emedded therein mounted upon said frame,

and annular members positioned 11 on the and having links at their ends, extending sections of said frame and having t e ends beyond the ends of the packer and secure of the chain seculfdto the annular members. in the collars,

4. A device 0 the character described a comprising a frame formed of an inner and LAWRENCE ROBINSON an outer section, collars upon said sections, Witnesses:

a yieldable packer carried by the frame be- PHILIP H. Cass,

4 tween said collars, and chains in said packer LOLA STEPHENSON,

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