US1757064A - Well tool - Google Patents

Description

Patented May 6, 1930 UNITED .STA-TES ,PATE

NT OFFICE' WILLIAM A. vooinor'none BEACH, AND Amos c. TowNn oFfLoMI'rA, CALIFORNIA i V'WELL Toon Y i l ApplicationV 'ledfiliineV 215,

This invention has what with@ weil e601Y Y and relates particularly to that typeV of" tool known generally asi-a spear. It `is'an object of the inventionto'provide a simple, practical, and improved tool of this general type. .Y An object: of our present 'invention is to provide a spear operable toV tightly grip ai casing, or theflike,'andcapablejofbeing re*- leased romithe casing, if desired. z

vide-an improved formation and mountingv Jfor slips in a tool of the characterk described whereby they operate eiectively and without binding;

A further obj ectof this invention is4 to prof vide a simple, eiective, and'strongslip mechanism operable to grip acasing for longitudlnal movementand -tobeoperated to rotate a v casing.

' Another object of our invention toprovide raV simple, practical', and, dependable means foi` controlling 'the' slips of a spear so that they can be release'dforoperation or released from operating position at the will` of the operator; a i

Itis another object of this invention to provide a spear` suchas we have referred to embodying afew simple, effective, and durable parts. Y ,A V.

The various objects `and features ofour invention will be bestandmore fully'underl tion of a typical form and application of the j Ye5 i' ings, in which:

stood from the followingmdetaileddescrip-k invention, throughout -which description reference is had to theaccompanying Ydraw- Fig. l isan exterior sider'elevationzof the spearfprovidedv by ourinvention showingit 1n a well casing and-released oraunactuatedA in which position it can be moved in either direction through -thef casingl'. Fig. 2 is a viewsimilar to Fig. 1 showing. `certain parts f of the device in section and `showing the [de-V l Y tailed sectional l the parts in the position illustrated in F igslg vice actuated or. in operating p Y position vgripping the casing.

view'of the ydevice Ashowing Fig. 4 is a detailed transversesectionalview taken as indicatedby line on 'liiggfh and A madeV downwardly divergent,

' displacement ,of the slip :from

'-Fig.v 3'isa longitudinal dei` 192s. serial N6. 288,170.

Fig: is a detailed transverse section view taken as indicatedby line 5- -5 onfFig. V2.5" Y f The tool providedby this invention: in-` clude's, 'generally a body l0, casing engagingv` members or'slips l1, a tapered orwedge part Q 'f l 712 on the body for expanding tliefslips, an`

enlargement or head 18 on the 'bod'ya't' a Ipoint spaced from the wedge l2,.a sleevefglt slida' vided with a central longitudinal circulation 1 opening-'f 16 as. shown inthe drawings.

, f `bly mounted von the body between the Vwedge I Another objectif thefinvention is'to'pro#` vtion withthe 1sleeve and-head, and various Y principal partsofl V l The body lO'may beV round in The wedge 12'isprefe`rably in the form of j an enlargement` at or on the lower end of the- .body 10. vIn the particular tool illustrated the wedge isround in cross section and is as Y, clearly shown` throughout rthe .drawings Y In the construct-ion illustratedg the wedge is integral-with the bodyand is provided at itsk lloweror large end with an4 iugiwardlypro- Jecting part or stop V17 operable vto permit thewedge, In

practice a.centralscrew-threaded socket 18',v i

or the like, may be provided at the lower end of the structure ius't described toreceive anyk part or devicethat an operator may desire to attach to the tool.`

The 'slipszllimay be of theA type ordinarily provided instance, the` outer faces ofthe slips vmay be provided with gripping parts or teeth 19 to engagegthe casing" 20 VVin, whichthe 'tool is injwelltools of this character. v'For Y operated; '.'Iheslips kmay be .offvarious sizes andV there may be yvarious numbers 'of slips. In the drawings we have shown` three slips of equal *size Asymmetricallyf'arranged: on the wedge 12,715 In accordance with the present Y invention the inner .sidejor face of Yeach Isli a has Aans upper bearingsportion 2l slidably iitting the body :10 and a lower bearing. por'-,

t .tion 22V formed at'ian anglefto cooperate with lOO 'l the face ofthe wedge 12. Further,v in accordance with the invention we provide means locking the wedge and slips against relative rotary motion. This means preferably includes ribs or projections 23 on the exterior of the wedge slidably fitting longitudinally- Y disposed slots 24V formed in `the slips `from their lower ends. Thebaseor inner portions `of the projections 23 are dove tailed into suitable recesses 25 provided in thel wedge .Y 12,*1as1clearly illustrated inzFig/f lof thel drawings. VIn practice a free sliding. tit` is provided between the projections 23 and' the slips 11, which iit is maintained during theA various operations of the' tool.

The head. 13. is in the nature of ansen'-,

body being screw.' threaded onthe .upper end endofthefbody asclearly .shown inflfig.. 3;

l d The headfl may` proj ect above the bodyAY and have.` a screw-threadedpart, forv instancea socket V31', whereby the tooljcan be connected withgan'roperating membersuch `as a strm of drill pipe32, or theV like.

The'sleevfe 14 is'slidablyrandrotatably 'carried Von the body 10 intermediate the wedge 12 and head 13. The sleeveis connecteclwith or carries the slipsfll-ffor thefpurpose of actuating them with 'reference to the wedge. In'the construction illustrated Veach `slip-.is

provided Yat its upper .endl with an extension.

33 having enlargements'341` 'at-,its outer end.

'An annular-Harige. 35 projects fromthe lower end ofthe sleeve over the extensions-33 to overhang Vthe enlargements 34,2 as [clearly shown inFigs. V2 and 3 of the drawings. `The partsjustreferred to are fitted orrelated so thatthe .sleeve isfree to rotate relative to.' the slipsbut isconnected withthe slipsto nieve them longitudinally lwithreferenceto rY the bodyand wedge.A

Thegsleeve 14k isprovided'with means to rictionally engage the casing .20 softh'at theA sleeve resists.` movement inthe casing.v ln

practicejthis means may comprise aplural- 1 ity lof spring members carried by the sleeve to project outwardly fromitand hear against Y thefinterior of the casing 2021s shown throughout thedrawing's. In thevpreferred construction the sprlngmembers 40er-e mounted in recesseslll provided atithe exterior ofthe.

body, the :recesses operating Yto brace the springs laterally.

The control means 15 operates between theA ,sleeve 1e and the .body 10 orjthefhead 13.

which maybe considered a` partot .the body;

The control means 15" providesa releasahle connection between the sleeve and head whereby thegliead and'sleeveare connected' tomovc together in a-lengitudinalsdirectionjor can Vbe released to move relative te each `'other in a longitudinal ,i direction. The meansv illus:-

trated is such asto be actuated by relative rotation between the head and sleeve.'A The form of means illustrated in the drawings includes one or more arms projecting upwardly from the sleeve to slidably operate in guideways51,extending intofthelieadT from itslower end andf lateral projections or lugs 52 on the upper ends of the arms to cooper-` ate lwith lateral openings or notches 53 at the upper ends of the guid'ewaysrl.- Inl tliecn' struction illustratedV there'are two arms 50 and vcooperating parts located diametrically opposite eachf'othei,- .Each-guideway y51 is 'sufciently wide'toaccommodate vor slidablyV carry its. cooperating arm f5@ and lug 52,5211- lowing ree movement ofV the parts i 4between positions such as are 'shown inv Figs.1and 2. 'Elie/ lug fits the notch.53-attheupper; end of. they guideasshownin Fig.y 1 so that thefhead 13 andsli-ievel 14. have( to be moved relativevk to each other infa rotaryr direction. van'dzalso somewhat .longitudinally inf `order to 'disen-A gage'the luggfromrthe notch.l .Whentlie lug j isin the:notch,jthelower endl'of thehead 13 may, engage'theupperiend of. the sleeve 14;.;

`Inoperationthe` tool is operated through the casing 2O wi5ththe parts positioned als fes, 4

shown in Figs.V 1 and 3. With this jrgofsition` f ing of'partsfthe sleeve-14 issetqor. heldin theV Yupnpositiony on the b0dy. inf-wh ich position the slipsare in an ,up'position on the walge and' therefore ,.unactu'atedr or unexpanded vVhen' it is desired to'actuate the tool to grip l* vIoo f the,casving,-,the headis rotated. through the operatingmemberl32solthat the Alugs 52 are disengaged'. romsthe n0tches53 allowing the .headandmbodyfandtherefore the wedge, to Vbelittedor moved upwardly withjreferenjce tothe sleeve, causing the wedgeto.expandthe.r

aslips intofgrippingfengagementwith the casing.l It will be apparentthat theslipsengage Y thecasing sogthat it canberlfted or` moved f longitudinally Orca-n be rotatedbylrotatin'g" thek member 32.5V It willbeobvious; thatfro'-k tational.strain.romthememberg32 is applied? g tionsi23li*` Y v Y. Y. y

In the @Vellt'tllatft is desired. to release the 0.01 'F01111thel0ang5-thehead 1 3 can be low.-

`Irs4r l ered with referen'ce tothe sleeve 141 ,untilthe lugsr52 areoppositetheir notches y53- whereupon rotation Vof the head 1x1-3fm the proper.y

directionwill cause thelugs to be'engaged inartsthusf iositioiied: the sli sarefunactuated' Y i i, 3 v

or yi'ee of the Acasii'ig allowing the tool to be operated-"freelyin either direction throughthe casing,` 'It will beapparent that the tool can beoperatedf or released-,as many Atimes fas de`` Asired'withoutremovmg 1t from 'the casing..

llaving ldescribed only'v a typical preferredform' of our invention, we l do l not -wish vto'j v 'limit' Lourselves tothe specific details set forth', j' butwish Vto ,reserve toourselvesany changes j or variations that ma appear to those skilled in the art or fall wit inthe scope of thev fol- Y lowing claims.

Having described our invention, we claim: c y l. A well tool of the character described including a body, a wedge carried by the body, slips to be expanded by the wedge, and means operable to control operation of the slips in cluding a releasable connection between the p V1Y0 body and slips including a membercarrying v including azbody, awedge carried by the l body, slips to be expanded bythe wedge, and s means operable tocontrol operationof the slips including a releasable connection between the body and slips including a member carrying the slips and mounted on the body for rotation and longitudinal movement, and means controlled by relative rotation between f e Athe body and said member yfor releasablvv holding said member against longitudinal movement with the slips unact'uated, and-including a projection on the member extending longitudinally ofthe body into a guideway on the body and a laterally projecting lug on the projection to cooperate with arecess in the guideway.v y

3. In a well tool of the character described a wedge, slips arranged `tor actuation vby the. i

40 wedge, and a longitudinal projection on the wedge extending intoa longitudinally-disi posed opening in one of the slips, the projection being attached to the wedge through'a dove-tailed part fitting an opening in the wedge. c" y.

` 4. In a well tool of the character described, A two members,-one a body, the otherra sleeve carried on the bodyfor `rotation and longi- I tudinalmovement, a wedge carried by the.

Y body, slips connected with the sleeve adapted to be expanded bythe wedge, and anarm on' one member having a lateral lug to kcooperate withan Vopening in the other member for releasably holding the slips against operation Y and being releasable upon relativerotation day-cof June, 1928K.

of the members, the opening having a partV receiving the lug to prevent relative longitudinal movementbetweenthe members inl either direction.w j p 6oA Y In witness that'we claim the foregoing we have hereunto'subscribed our names this 14th -v'vILLIAM` A vooK.

'- 6 c i '"AMOVSQTowNn 2. A Vwellftool of the character {dSCI-ibed

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