US1641921A - Combined casing head, oil saver, and tubing lander - Google Patents

Description

Sqn. 6, 1927. l 1,641,921'v E. v. CRQWELL v COMBINED CASING HFAD,` OIL SAVER, AND TUBING LANDER A TTUHNEVS E; V. CROWELL y COMBINED CASING HEAD, OIL -SVERv AND TBING LANDER Filedb. 20. 1923 6 Sheets-Sheet 2 A )Nm/ron Era?. TZ Crowell.

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ATTORNEYS Y 1,641,921v E. V. CROWELL COMBINED cAsING HEAD, OIL SAVER, AND TUBING LANDER Filed Feb. 20. 1925 Sept. 69

6 Sheets-,Sheet 5 y A TTOHNEYS f,. l rl Sept. V6 1927. 1,641,921

E.' vf czRowELL:`

COMBINED CASINGHEAD, OIL SAVER, AND TUBING LANDER Filed' Feb, 2o. 192s e sheets-sheet 4 rom/frs wlrlvfssks I vf 1,641,921 Sept .6 1927 E. v. cRoWELL COMBINED CASING lHEAD, OIL SAVER, AND TUBING LANDER Filed Feb, 2o; 1923 @sheets-sheet 5 K ATTORNEYS sept. 6,V 1927.`

E. V. CROWELL COMBINED CASING HEAD, OIL SAVER, AND TUBING LANDER Filed Feb. 20. 1923 6 Sheets-Sheet 6 I A w/rf/Essfs f 'A11-01111151.11` Y Y l5 iiowing oil o r operativejposition onthe casing Patentel- Sept. 6, 1927. i

lUNITI-:D STA aan v. cnownLL, or LosANeaLEs, cALn'onivrA',`Ass1GNon or oniiairirofrnif @manson conronA'rroN, or DALLAS,

TEXAS, A' conroaA'rIeNsor DELAWARE'.

commun cAsnm HEAD, oILfisAvEa, Ann 'ruisrnemnnm nAppnaanm med rbruary.2o, 192ra. sans; im. 920,293.

This invention relates to a, combined cas? ing head, tubing. oil saver and landlng head especiallyadapted for use in iiowmg 011' or gaswells, Where the element of inventionf 5 vresides not alone'in the particular design ofvl head, tubing oilsaver and landing head by means of which a tubing or any cylindrical tool may beintroducedinto'the casin cfa. as well and landed Wlthout the .lescape of c11- or'gas at the mouth of the WEIL.

Also the invention the subject.'

matter-of this 'application aims vtlc-"provide a quick, convenient and positive means for `temporari1y anchoring thetubing' tothe casing head wbilefadditionaljoints otubin-g are being screwed'onto v the exposed portion Afof the tubing, there being -means to provide atemporar ,.'sealr between. the tubing and .the casing' ead during' the descent of the tubing o r -while the sameis temporarily held in 'a set position.

Further Athe ipnvt'antionaims to' provide a qulck, convementjand posltive' means for permanently sealing the annular space .be--

' tween thepcasmg headgand the tubing after "the tubing. llSibeen landed.

.the'r ob'ects and-- advantages off-the in ventio'n will be ap'parentduring the course ofV the-following description;

'In the accompanying.' drawing lforming a'- part ofthis application andan 'which ilke numerals. are employed.. todesignate like parts throl'ighout.the same,v Figure- 1 is 11a vertical sectional view through one l major applicationbf v the in? vention, the tubing oilsaver belngf-ln-jpos'L- tion on'the casing lhead-with the packing j rl'ibbers thereof inengagement Withthetub-l ingso as to'efect aitemporaryland yi'eldable seal between thetubing-and" the`c'asing head.

j Figure 2V 'is 'a *verticaly sectional view through the other-major application' of the invention, the landing headbeing1 the tubing oil sav'e'rjhasbeen detachedl'from Briefly' stated an important object of the invention is to -provide a combined casing.

shown in ead While 4'throughfall parts assembledias'A al combina-f tion, the .landing head .beingshown inf'opy 'erative position on the casing head, -having oilsaver being shown in thei'r inoperative positions-prepatratory' to the removal of fthe" tubing oil save` fromk the casing head.

Figure 4 is a'partial perspective view-of 'thejslips f Y Figure 5 i aperspective- 'view of a spider .embodied'in the invention.' Figure Gis a perspective v-i :section oftlie housing lid-. j 1

Figure -7 is a perspectwefvievv'of another FigureS isfa'fragmentary-'perspective'ofv section of the housing.

the housing rubber cage.'

Figure 9 is a side-elevation of' the .im-

"part, ofthe landing head feature. Figure -10 is a perspective of one-of the sections of 'the tubular packing clamp.

j Figure Il is aperspective of o 'ne portion 'of the tubular'packing. Figure 12 is a perspective [of one portion of the 'tubularpac'king annulus'.`

' Figure' 13 is ya perspective' oi the other portion of the 'tubular annulus.

proved tubular packing clamp, `forming a been'lowered to"p'osit-i'on through the tubing' I oil saver, the paclngrubbersof the tubing ew showing a l Figure'lllis a perspective view'of a p ortion'of the housingrubber packing section'.' Figure l5 isyaperspectivefof a' packing gland -embodied in the'invention,

Figure 16 'is a perspective. view of the casing'head andits several connections. Figurel'? is -a perspective'part-ly in sec;- tion of. the casing' head rubber.

In the drawing 'wherein for the purpose oflllustr'ation isgshown a preferred embodiement of the invention, the-numeral 5 desig-'I i' natesacasing of the usual and Well known `c('mstru'f'ition,the upper'end of which has threaded' engagement with a' casin head 6.--

Theusua'llead lines Textend'from t. ceasing head .6 anddi'schargethe oil into a tank' or the like. 3N. The invention forming the subject matter from the'easing' :of thisapplication is providedwith-simple means whereby the .tubing 8 may be introreduced to la minimum. 5V When the tubing is -,the'vvell casing, the oilsaver housing -10 il duced intdthe Wellcasin with agminimuncr loss of gas" and eiland' wltjh the fire hazard' 105,

Abeing lowered into f* mounted en the upper end of the casing head and the depending flange 12 of the same receives the u per portion of the casing head. The tubing oilsa'ver housing,.is composed of a pairl of semi-elliptical sections, the edges of which are formed with ears lt for the reception of fastening bolts by means oi which the sections may be connected. Figure 1 illustrates that the inner side of each depending flange l12 is formed with an inwardly extending projection 15 received in an annular groove 16 in the adjacent portion of the casing head, and a packing 17 carried by the inwardly extending rib or projection 15 piovides agas and liquid tight connection between the housing l0 and Vthe casing head.

Figure 1 illustrates that the inwardly eX- tending projection 15, when received in the groove 16 also securely connects the housing to the casing head and prevents gas pressure from blowing the housing oit. l

Figure-1 also illustrates that the casing head has its upper portion interiorly enlarged to provide an annular shoulder 20 which supports a packing 21 or what might be said to be a easing head rubber. A packing gland 24 of tubular formation surrounds the tubing and is provided with a laterally projecting iiange 25which contacts with the casin head rubber 21 whereby to provide a tig it connection between the gland and the casing head.

When preparing to 4introduce the tubing into the well a lurality of packing rubbers 30 are arranged about the tubing and are held in position by means of a packing holder 31 composed of a pair of semi-circulai' sections. It might be stated that the packers 30 are composed of semi-circular sections and are held in position b means ofthe inwardly directed ribs 33 of t ie packino' holder 3l. 2Figure 1 illustrates that the sections of the packing holder 31 are provided with outwardly projectingmembers 35 having their under sides open for the reception of the heads 36 of adjusting screws 37. The ad- 'ust-ing screws 37 are threaded through the o using 10 and are provided with handles 38 by means of which the screws may be rotated. During the descent of the tubing the packers 30 provide a yield'able seat between the tubin and the housing 10. lhen the couplings w ich join the sections of the tubing pass ,through the housing 10 the rubbei' ackers 30 expand so as to permit of the ree movement of the couplings. Therefore, the packers 30 of which there may be three or anyY desired number provide a convenient means for reventing the escape of oil and gas througi the housing 10 during the descent of the tubing and while the tubing is temporarily'brought to rest for the purpose of adding a section or for the purmarinai pose of detaching a section. the production of oil during the descent of the tubing.

1When it is desired to temporarily hold the tubing in a set position for the purpose outlined, slips may be inserted into the ta pered opening of a spider 61 and the slips will, of course, be tightly engaged with the tubing.

Figure 1 illustrates that the spider 61`is provided with a laterally projecting flange 62 which is engaged with the upper side of the housing cap or lid 64. It might be stated that the cap 64: is composed ot seiiii-elliptical sections the meeting portions of which are connected by fastening devices or ythe like.y The cap 64 is provided with an upstandin annular fiange 67 having downwardly an inwardly extending set screws 68 which engage the flange 62 and thereby hold the spider in position. Otcoursefwhen it is desired to release the spider for. a purpose to be fully and hereinafter described the not screws may be loosened Then the tubing has been lowered to the This insures proper position in the well the packers 30,

the cap 64; and the housing 10 may be removed and an annular packing 70 arranffed between the packing gland 211 and the tubing whereby to forni a seal. The packing 70 is connected to the lower end of a tubular clamp 71 by means of a plurality of fastening devices 72. The'fastening devices which are in the nature of bolts are extended entirely through the packer 70. Then the packer is inposition within the gland 24, the annulus 74 upon the lower end of the same is engaged with the 'inwardly projecting shoulder 5 of the packing gland. When the packer 70 is vcompressed the upper portions of the -fastening bolts 72 and the nuts thereon are received in slots 7G formed in the tubular clamp 71.

Of course, preparatory to placing 'the clamp 71 in'position the spider 61`is elevated to the position illustrated in Figure 3 and the lower side of the same is engaged with .the enlarged upper end 8O ot the clamp 71. It might be stated that the clamp 71 is `cornposed of a pair of semi-circular sections as illustrated in Figure 9. In Figure 10 it is shown that the edges of the sections are sections secured together by means of bolts,

nuts `or other fastening devices, thus'permitting them to be assembled about `the tubing or to be detached without having yto slip them over the tubingQ-a feature very imporltant to thev successful performance -of the work. I

. l`Figures 6 and'7'illustrate that the upper portion of each section of the housing 10 is provided with laterally projecting flanges' 68 whichare adapted to be received in the to the housing.

With reference to the foregoing description taken in connection with the accompanying drawings it will be apparent that this invention resides in 'the novel combination ofmajor parts by means ofwhicli the tubing ma be landed, and by means 'of which a suhstantial saving in oil and 'gas is brought about.

' In 'operation the tubing oil saver is assembled upon the casing head, the packin gland y and casing head rubber are positione in the casing head as shown in Figure 1, the tubing 8 is started inthe well and the housing rub' bers 30 are adjusted tightly up against the tubing as shown. When the housing rubbers 30 are -tlius jammed tight up against the tub-l in by means of the operatingscrews 37 it is evident that the rubbers make a gas tight seal between the housing sections and the tubin 8. Therefore the onlyl avenue of escape or oil and gas is out through the lead lines 7 where the oil can be conserved and is prevented from reaching the Vderrick floor above where the men are at work. ,These housing rubbers are of such ample diameter that when .they are jammedA tight up against thev tubing to form a posit-ive seal they are yieldable to such anextent thatthe 'tubing can be raised or lowered through them without interrupting the protection.

The .spider 61 is temporarily positioned in i the lid section 64-and held securely in posiy are machined so as to lit the taperingbore tion by means of stt screws 68. The slips 60 ofthe spider 61 and the weight of the tubing serves to make the slips more securely grip tight against the tubing 8 until the landing the tubin With the spider and slips thus,

positione in the lid sections'64 they furnish means for intermittently anchoring the tubing as it is desired to add sections while the tubing operation is inl progress.

After the full string of tubing has thus been run into the well and 'it is desired to land it, the `housing rubbers 30 are left clamped head feature is lassembled upon the Atubing and ready to lbe made operative.A "The set screws 68 are' loosened to permit the spider 61 to be elevated on the tubing several 1 feet while the weight of the tubingis suspended from the deri-ick by the elevators invtheusual manner. Thenthe" landing head assembled as shown in Figure 9 is arranged about the tubing 8, under the s ider 61, after which the s ider 61 is allowe to rest on top of the tubu ar clamps 71 and the slips 60 are dropped to place within 'the spider 61. Therefore the tubing is securely attached to illustrated in Figure 3.

` Figure 2.

of oil or the spider 61; andthe spider, in turn, is rest ing on to ofthe tubular clamps 71. It will be seen t at when the Vwei ht of the tubing is allowed to settle the tubu ar clamps 71, the spider 61 and the slips will move down through the ,oil saver, to final position, as

Of course as the landing. head is being moved through the oil saver as a result of the descend of the tubing the housing rubbers 30 are moved out of the way back inthe housing section by means of operating screws 37. As previousl stated the housing sections are semielliptica in shape so as to provide spaces toreceive the packing members when moved to their inoperative positions.`

When the landing head has been brought to final and operative position as shown in Figure 3 the oil saver has served its purpose and may be l,detached from the casing-head leaving the parts in the position shown in In Figure 2 the landing head feature is shown in operative position,.the tubing issupported by the spider and sli s and the weight of the tubing 8 workin t ough the vspider and'slips and the tubu ar clamps 71 has made the rubbers 21 and 70 operate.

That is to sa the weight of the tubing is transmitted t rough the members 71 and is borne by the rubbers- 21 and 70 whereby the rubbers 21 have made a seal' between the cas. ing head 6' andthe gland '24, and the rubbers have made a seal between the tubing 8 and the gland 24 to prevent Vthe escape gas. v

-Figure shows the simultaneous assembly of the tubing oil saver and the landin head upon the casing head, one of the distinctive features of the combination offering animportant' advantage, for as must. be remembered,^the tubing oil saver serves one purpose while the landing head. serves a diierent purpose, yet vtheir-combined and successive use is 'necessary to answer the requirements of the tubing operation. The prime object ofthe present invention is to provide protectionqagainst: the escape of oil or gas, except'through the lead lines 7, while the y tubing operation is in progress, whether the operation vbe that of running theytubing'or` landing' it. To do this it is necessary to" i provide a tubing oil Vsaver assembled' as lshown in Figure 1 and a landing head as sembled as shown i`nFigure 2, particularly adapted to their individual purposes and capable of bein expeditiously interchanged under the con itions Aencountered in their use. The novelty of lthe invention resides,

therefore, not alone'in 'the particular design ofthe individual partsbut in their adaptability to combination to answer the re-.`

quirements of their purpose.

In carrying out the objects of the invention the` housing rubber cage shown in Figtiti lili

tilt

ure 8 is a semicircular cage for the housing rubbers 3() and the rubbers are attached therein to the rib sections 33 b y means of bolts or other fastening devices, this Jreature being illustrated in Figure l. The cages 31 have upst-anding lugs or gudgeons 3d which contact with the lid sections 64e in assembly as shown in Fig. l. lt is the purpose oi.z these lugs Bei to prevent the housing rubbers 30 from tilting or buckling as they are jammed tight up against the tubing il,KA as shown in Figure l. For the purpose ot'illustration the housing rubbers 30 are shown clamped tight up against the tubing d in Figure l. Vlt is evident that the expansion ol the rubbers 30 must be limited so that a seal is made between the tubing S and the housing section l0. its the housingl rubbers 30 are jannned tight up against the tubing 8 as shown in Figure l the lower rubber makes a. seal with. the bottom ot the housing l as well as with the tubing o", while the upper rubbers add strength and make a seal with the sides of the housing l`cction 10. rlhus as the rubber cage sections 3l are adjusted up against the tubing 8 as shown in lifigure l the rubbers are forced to make a positive but yieldable seal between the tubing 8 and the housing sections l0 through which the tubing 8 may beoperated.

.ilaving thus described the invention, what li claim is l. 'llhe combination ot a. casing head, a tubing oil saver associated therewith, and a tubing support extending through the oil saver and mounted on the casing head.

'lihe combination with a casing head, of an oil saver supported by said head, a paeking gland received in said head, and a packing arranged between said gland and head.

d. 'lhe combination ot a casing head, a gland associated with the head, a tubular clamp having a packing'received in said gland, and a tubing supporting means carried by said tubular clamp, and an oil saver surrounding the clamp between the tubing supporting means and said packing.

1l. ik tubing supportv comprising a tubular body having tubing engaging means, and a compressible packing having attaching members slidably connected to said body.

5. The combination with a casing head, of a tubing oil saver mounted on the casing head, anelongated tubing landing member extending through the oil saver and supported by the head, a spider mounted on the upper portion of the tubing landing member, ltnd slips received in said spider and adapted to engage a tubing.

6. The combination with a casing headyot a tubing oil saver mounted on the casing dread, an elongated tubing landing member extending through the oil saver, the casing head having a receiving portion tor supporting the landing member whereby the oil nearest saver may be removed, and compressible means sustaining the weight of tubing carried by the landing member for effecting a duid tight connection between the tubing landing-member and its support.

7. rlhe combination of a casing head, a gland received in said head, and a tubular clamp having a packing movably connected thereto and received 1n said gland, said clamp being provided with tubing supporting means'above said oil saver.

8. 'lhc combination of a casing head, a housing consisting of sections having means whereby the same may be detacliably connected, a 'packing holder arranged within the housing and consisting of a plurality of sections having inwardly directed ianges, arcuate packings carried by said flanges and adapted tor yieldably engaging a well tubing whereby to permit of the passage of the couplings on the tubing, means whereby the tension et the packings may be varied, al

packing' gland received in said bead and a tubing support surrounding the tubing and having a packingreceived in said packing gland, and means associated with the upper portion et' the tubing support to limit the descent ot' the well tubing.

9. The combination with a casing head, ot' a packing gland associated therewith and adapted te receive a well tubing, a tubing support consisting o'l a pair of semieircular sections surrounding the tubing and having the lower portions provided with a packing received in said gland, a spider mounted on the upper end ot said clamp, and slips received in said spider and adapted for engaging a well tubing, and an oil saver adapted to be applied to said head and surround said clamp. I

l0. The combination of a casing head, ot a packing gland associated therewith and having a shoulder, a packing received in said gland and engaging said shoulder, a packing clamp ot tubular formation having its lower portion formed with a plurality of longitudinal slots, and fastening devices eX- slots whereby the packing may contract.

ll. rlhe combination of a casing head, a packing gland associated therewith and having a shoulder, a packing received in said gland and engaging said shoulder, apacking clamp having its lower portion termed with longitudinal slots, fastening devices e1:- tending through said packing and into said slots whereby the packings may contract, a'

`tending through said packings and into said "member havin itslower portion prpvided with slots, astening vdevices extending through said packing and the lower yortion through said-` of said tubular member, said fastening devices being freely received in said .slots whereby the packing may contract, a spider engaged with the upper end of lsaid clamp,

and slips received in said spider. I

13. The combination of a'packing gland, a packing received therein and adapted to provide a 1i uid and gas-tight connection between the g and and the tubing, a tubular member havin with slots, astening .devices extending through said packing and the lower portion of said tubular member, said fastening devices being freely received in said slots whereby the packing may contract, a spider engaged with the vup er end of said clamp,

slips received. .in sai spider, anda tubing wall savermember.

14. The combination `of a ,packing gland, a packing received therein and adapted to arranged about the tubular provide-a liquid amigas-tight connection bev tween the andand the tubing, a tubular its lower `portion provided g 4member having` with s1ots,f.'j a'stening devices' .extending tion ofsaid'tu ular member, 'said fastening devices being' freely received in said -slots whereb the packing may contract, a spider engage with the u perv end of said clamp, slips received said ranged aboutl the tubular' member, and..'a casin head ada ted for supporting said gian and saidojfsaver.

15. The co its lower portion provided packing and the lower` por' spider, an oil saverar# recede back from and into thehousin'g iof a tubing oil saver,and a landingv head operating vertically through the oil saver, the casino' head having separate means for individua y supporting the oil saver and i the -landing head, whereby either the oil saver or the landing head may be mounted on the cas'ing head or removed therefrom without interference from eachother.

16. In a device of the character described, a tubing oil saver'comprising housing and lid sections releasably attached to each other and to they casing head in assembly, a tubing anchoring means consisting of spider and set of slips releasably attached to the lid sections, a packing head arranged 4within the housing sections consisting of a pair of semicircular sections having their inner si es formed with supports, packers carried by said supports,"and adjusting devices carried by said housing sections and engaged with said sections whereby'the packers may be adjusted with relation'to the'tubing."

17. The combination with a well casing, a casing head arranged thereon, a tubing extending vthrough said casing and casing head,- a tubing oil saver comprising housing and lid sections releasably secured to each other and to the casing head in assembly, a tubing anchorin vmeansconsisting'of a spider 70 and set of s ips releasably secured to the lid sections, a packing head arranged with-in the housing sections consisting of a pair of semi-circular packing sections operatively attached to the housing sections so designed and roportioned that the packingsections may e Aadjusted, against the tubingso as to forma gas-tight seal or may be made to L sections so as to .open the full radial'area .ofthe N casing.

.ERD V. CROWELL. l'

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