US3011559A - Subsurface apparatus for automatically filling conduit strings - Google Patents

Subsurface apparatus for automatically filling conduit strings Download PDF

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US3011559A
US3011559A US704603A US70460357A US3011559A US 3011559 A US3011559 A US 3011559A US 704603 A US704603 A US 704603A US 70460357 A US70460357 A US 70460357A US 3011559 A US3011559 A US 3011559A
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valve
tubular
seat
fluid
engagement
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US704603A
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John F Muse
William D Myers
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Baker Hughes Oilfield Operations LLC
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Baker Oil Tools Inc
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10Valve arrangements in drilling-fluid circulation systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/1624Destructible or deformable element controlled
    • Y10T137/1632Destructible element
    • Y10T137/1669Tensile or sheer pin or bolt
    • Y10T137/1677Pressure causes pin or bolt to destruct
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7771Bi-directional flow valves

Description

Dec. 5, 1961 J. F. MUSE ErAL suBsuRFAcE APPARATUS FOR AUTOMATICALLY FILLING CONDUIT STRINGS 2 Sheets-Sheet 1 Filed Dec. 25, 1957 Dec. 5, 1961 J. F. MUSE ErAL suBsuRFAcE APPARATUS FOR AUIOMATICALLY FILLING coNDUII STRINGS 2 lSheets-Sheet 2 Filed Dec. 23, 1957 INVENT ORS.
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United States Patent O ice 3,011,559 SUBSURFACE APPARATUS FOR AUTOMATI- CALLY FILLING CONDUIT STRINGS John F. Muse, Whittier, and William D. Myers, Norwalk, Calif., assignors to Baker Oil Tools, Inc., Los Angeles, Calif., a corporation of California Filed Dec. 23, 1957, Ser. No. 704,603 16 Claims. (Cl. 166-225) The present invention relates to subsurface well apparatus, and more particularly to apparatus for controllably tilling a conduit string, such as a string of casing or drill pipe, with the fluid in the well bore as the conduit string is lowered therewithin.
An object of the invention is to provide apparatus adapted to be incorporated in a conduit string for controllably allowing the conduit string to ill automatically with the well bore fluid as it is lowered in the well bore, in which circulation down through the conduit string can be established at any time without altecting the ability of the apparatus to subsequently control lilling of the conduit string with the well bore lluid.
Another object of the invention is to provide appara-tus adapted to be incorporated in a conduit string for automatically and controllably filling the conduit string with the fluid in a well bore, the apparatus embodying an upwardly closing back pressure valve held in an ineffective position during such iilling 'of the conduit string and during the time that circulation down through the conduit string is established, the back pressure Valve being placed in an effective condition whenever desired. At any time before rendering the back pressure valve effective, down-` lward pumping or circulation of fluid through the conduit string can take place without effecting the subsequent ability ofv the apparatus to controllably till the conduit string as it is lowered in the well bore.
This invention possesses many other advantages, Iand -has other objects which may be made more clearly apparent from a consideration of a form in which it may be embodied. This form is shown in the drawings accompanying and forming part of the present specification. It
will now be described in detail, for the purpose of illustrating the general principles of the invention; but it is to be understood that such detailed description is not to be taken in a limiting sense, since the scope of the invention is best defined by the appended claims.
Referring to the drawings:
FIGURE. l is a longitudinal section -through -a well apparatus embodying the invention, with the lling valve closed;
FIG. 2 is a View similar toFlG. l, with the filling A f valve in open position; Y
FIG. 3 is a view similar to lFIG. l, showing the condition of the apparatus during downward pumping or circulating .of fluid therethrough;
l FIG. 4 is a view similar to FIG. l, illustrating the back pressure v-alve released and `tluid being pumped downwardly through the apparatus.
The apparatus A disclosed in the drawings is ldesigned to form part of a string of well casing B, C to be run in -a well bore D. As specifically shown, the apparatus may yform part of a casing collar constituting part of the' casing string. It is to be understood, however, that the apparatus can also be incorporated in a casing string at its lower end, whereupon it would be considered to be a casing shoe. Moreover, the apparatus can be placed at any desired point in a string of drill pipe, or Vother co-nduit string, to be disposed in a well bore.
The apparatus A includes an outer tubular member 1V having an upper threaded box 11 for threaded attachment v Patented Dec. 5, 1961 tothe lower end of an adjacent upper casing section B, such casing section forming part of the casing string extending to the top of the Well bore. The tubular member also includes a lower pin 12 threadedly attached to the upper boX 13 of an adjacent lo-wer casing section C. The tubular member has a cementitious plug 14 cast therein, circular ribs 15 on the plug being formed in the casting operation by internal grooves 16 in the tubular member to inseparably unite the parts against relative movement.
The cementitious plug 14 has a central passage 17 therethrough surrounded by a valve seat 18 cast within the plug. This valve seat is engageable yby a back pressure valve element 19, disclosed as being in the form of a flapper valve mounted on a pivot pin 20y suitably secured to the valve seat. This valve element is normally urged in an upward direction into engagement with its cornpanion seat 18 by a spring 21 wound around the hinge pin 20, one arm 22 of the spring bearing against the valve seat, and the other arm 23 bearing against the ilapper valve head 19 itself. Y
The valve seat 18 actually forms part of an upper housing section 24 depending from the seat and piloted within the upper end of a lower housing section 25. Both of o these housing sections are inseparablyk united to the cementitious plug. The upper housing section 24 may have a cut-outportion or window 26 to allow the apper head valve -19 to swing downwardly away from engagement with its seat and substantially completely out ofthe path of the iluid flowing to and from the seat, as described hereinbelow. y
For the purpose of maintaining the Valve member 19 out of engagement with the seat during lowering of the casing string through the fluid inthe well bore, so as to allow the well bore lfluid to flow upwardly through the apparatus and into the casing B thereabove, to controllab'ly` till the casing string with the well bore fluid up to a predetermined level, which may preferably be less than the level of the iluid externally of the casing string, and to permit downward pumping of iiuid through the apparatus A at -any time `during the operation of lowering the casing in the well bore, without interfering with subsequent controllable iilling of the casing stringwith the well bore fluid, a valve device 27 is embodied in the tubular member 10 primarily lbelow the back pressure valve 19, this device being disposed within the housing sections 24, 25.
Y The valve device for controllably filling the well bore with tluid includes a tubular valve member 28 slidable lalong the wall of the lower housing section 25. .This
. tubular valve member has an upwardly projecting tubular portion, skirt or sleeve 29 releasably secured t-o it by one or more shear screws or pins 30, which tubular portion is adapted to engage the apper valve head 19 and maintain it in open position within the upper housing window 26 and substantially completely to one side of the path of iluid owing through the apparatus. It is preferable Ithat the tubular portion or extension sleeve 29 extends completely across the flapper valve member 19' when the latter is in open position, and, in fact, it may extend into they valve seat 18- itself for the purpose of insuring the retention of the back pressure apper valve head 19 in an ineffective position, and to prevent contact of the fluid in the casin-g string therewith while in such ineffective position. The sleeve valve member 28 is movable upwardly wit-hin the lower housing section 25, such upward movement being determined by engagement of the shoulder 31`thereon with an inwardly projecting shoulder 32 formed at the lower end of the upper housing sectionY 24. Downward movement of the valve member in the lower housing section is limited by engagement of a,
lower intermediate shoulder 33 thereon with a companion internal shoulder 34 in the lower housing section. When in this position (FlG. l), the valve extension 29 is still in engagement with the flapper valve head 19, preventing the spring 21 from shifting the latter to its closed position in engagement with its companion seat 18.
The lower inner edge 35 of the valve member 28 is engageable with the enlarged head portion 36 of a valve seat structure 37, having a depending stem portion 38 extending slidably through the central hub 39 of a spider d@ which is connected to, or integral with, the lower housing section 25 by a plurality of radially arranged circumerentially spaced ribs 41. Upward movement of the seat 37 within the housing is limited by engagement of a stop nut 42 threaded on the lower end of the stem 3 8 with the lower end of the spider hub 39. The seat 37 1s urged in an upward direction by a helical compression spring 43 surrounding the stern 3S, its lower end engaging the upper end of the hub 39 and its upper end the head portion 36 of the seat 37. The seat 37 can move downwardly away from the tubular valve member 23 against the force of the helical spring 43.
The fluid in the well bore can low upwardly into the lower end of the housing through the spider openings 44 between the ribs 41 and through the valve housing. This uid may shift the sleeve valve 28 in an upward direction away from engagement with the seat 37, whereupon it can continue llowing upwardly through the large diameter passage 45 through the sleeve valve, through the extension sleeve 29, past the apper valve head 19, and through the valve seat 1S for continued upward flowing into the casing section B above the collar A. The ability of the fluid to ow upwardly in this manner, is dependent upon the relative hydrostatic heads of fluid internally and externally of the casing string, which determines the engagement or non-engagement of the slidable sleeve valve member 28 with its companion seat 37. It is preferred that the fluid level in the casing string remain at a substantially lower point than the external fluid level, to insure that the lluid entering the well casing will not overow at its upper end and wet the surface equipment and personnel.
One manner of accomplishing the aforementioned objectives is to constitute the tubular valve member 2S as a valve device having differential upper and lower areas. Thus, the lower housing section 25 has an upper large diameter cylindrical wall 50, and an adjacent lower cylindrical wall 51 of smaller internal diameter, which are separatedby the aforementioned stop shoulder 34. The slidable valve member 28 has a corresponding large diameter upper portion 52 adapted to slide along the upper wall 50, and a smaller diameter portion 53 slidable along the lower cylindrical wall 51. When the valve member 28 moves in a downward direction to place its sealing edge 35 in engagement with the valve seat surface 54 on the head for the purpose of preventing upward passage of fluid through the apparatus, the transverse shoulder 33 on the large diameter portion of the tubular valve member may engage the housing shoulder 34. At the same time, the tubular valve extension 29 is still in contact with and disposed across the flapper valve head 19 to hold it to one side of the upper housing section in a wide open position, out of engagement from its seat 18, to protect the valve head 19 from the erosive action of the fluid owing longitudinally through the apparatus.
Suitable slidable types of seals 55 are provided between the cylindrical walls 50, 51 of the housing section and the valve member 28. Rubber or rubber-like seal rings 55 are disposed on the large and smaller diameter lportions 52, 53 of the valve member for slidable sealing with the companion large and smaller diameter cylindrical walls 50, 51 of the housing section 25. These seals cooperate with the valve member 28 and the housing section 25 to form a confined annular cylinder space into which the well fluid cannot enter, this space containing air at substantially atmospheric pressure.
Since the smaller cylinder 51 has a lesser diameter than the larger cylinder 50, and the lower portion 53 of the valve member has a corresponding lesser diameter than the diameter of the upper portion 52 of the valve member, the downwardly facing area R of the valve member 28 over which fluid can act to urge the valve 28 in an upward direction, is substantially less than the upwardly facing area S over which the lluid above the valve member 28 can act. Thus, the annular area R between the sealing edge 35 of the valve member and the smaller diameter cylinder wall 51 is less than the annular area S between an upwardly cylindrical prolongation of this sealing edge 35 and the larger diameter cylinder wall 50. Accordingly, fluid under pressure below the valve mem- -ber 28, which corresponds to the hydrostatic head of lluid externally of the casing string B, C,y is acting over the area R, to urge the valve member 28 in an upward direction out of engagement from its companion seat 37. The pressure of the iluid within the casing string B, C, which corresponds to the hydrostatic head of fluid therewithin, is acting in a downward direction over the area S of the valve member 2S, tending to urge the latter in a downward direction into engagement with the valve seat 37. A balanced condition on the valve 2.8 4will be realized when the pressure acting upwardly onV the valve member over the area R vexerts a total force which is equal to the pressure acting on the valve member in the opposite direction over the area S. Since the `area R is less than the area S, a balanced condition will be obtained when there is a lesser pressure internally of the casing string than exists externally thereof. Expressed by way of formula, a balanced condition will exist when:
P1R=P2S in which: P1=`the hydrostatic head of fluid externally of the casing string; and P2=the hydrostatic head of fluid internally of the well casing.
The hydrostatic heads of fluid externally and internally of the well casing will, therefore, be inversely proportional to the areas S and R. Since the area S is greater than the area R, the hydrostatic head of fluid internally of the well casing will be less than the hydrostatic head of uid externally of the well casing, for a balanced condition to exist. As the hydrostatic head of uid within the well casing increasesto a further extent, it will shift the valve member 2S downwardly into engagement with the valve seat 37, preventing further upward passage of fluid into the well casing B, C, until the casing string has been lowered in the well bore uid to a further extent.
The apparatus is run in the well bore with the parts loccupying either of the relative positions shown in FIGS.
1 and 2. During such lowering, the hydrostatic head of fluid around the well casing B, C will act over the area R of the valve member 28 to shift it out of engagement from the valve seat (FIG. 2), or to open position, allowing the uid to ow upwardly around the valve seat 37 and through the tubular valve member 28, moving upwardly through thetubular extension sleeve 29 past the liapper valve head 19 and on into the casing string section B above the collar apparatus A. If the casing string is brought to rest, as for the purpose of adding another casing section at the top of the hole, the lluid will ow therewithin until it rises to a level satisfying the aforenoted equation, and when the level tends to exceed the amount indicated by the equation, then the pressure of the fluid within the well casing will shift the valve member 28 downwardly into engagement with the valve seat 37, as disclosed in FIG. 1, preventing further passage of fluid upwardly into the well casing. Such pressure of the fluid within the well casing cannot shift the valve seat 37 in a downward direction since the external hydrostatic head of iluid acting upwardly on thevalve seat 37 exceeds the internal pressure acting downwardly on this seat, the external pressure being assisted Vin holding the valve seat in an upward position by the helicalv compression spring 43.
If the descent of the casing string in the well bore fluid is recommended, the valve 28 will then slide upwardly to open position, as indicated in FIG, 2, and additional luid will enter the casing string. The above actions will continue alternately with the valve 28 shifting between open and closed positions until the casing B, C has been lowered to the desired depth in the well bore. The level of the tiuid in the well casing, however, will always be maintained at a lower point than the level of the fluid in the well bore D externally of the well casing, depending upon the relationship of the aforenoted areas R and S. During all of this time, the tubular extension 29 projecting above the sleeve valve 28 is engaging the flapper valve head 19 to keep it in fully open posltion, and completely to one side of the iiuid flowing upwardly through the sleeve valve 28, so as not to interfere therewith, nor to be fluid cut thereby.
If at any time during the lowering of the casing string n the well bore, it becomes necessary or desirable to circulate or pump iluid down through the casing string B, C, such action can occur without aifecting the subsequent ability of the apparatus to controllably lill the casing string. Fluid is pumped into the casing string, the increasing of the fluid level relative tothe. external hydrostatic head shifting the tubular valve member 28 downwardly until it engages the housingV shoulder 34. The fluid pumped down the casing string will now pass through the extension sleeve 29 and the tubular valve member 23, forcing the valve seat 37'downwardly against the action of its Yspring 43 and passing through the spider 40 into the casing section or sections B therebelow, for discharge from the casing string into the well bore D. Such condition of the apparatus is illustrated in FIG. 3, in whichrit is evident that the extension sleeve 29 is rstill disposed fully across the flapper valve head 19 to vpre-A vent its shifting to closed position, and from being subject to the erosive action of the fluid being pumped through the apparatus.
After the circulation of fluid downwardly through the casing string has ceased, the spring 43 will shift the valve seat 37 upwardly into engagement with the tubular valve member 2S, closing the'central passage through the latter. The casing string B, C can then be lowered to a further extent in the well bore, the tubular valve member 28 remaining in .a downward position closed against its companion seat 37, until the casing string has been' lowered sufliciently to bring its internal uid level sufficiently below the tluid level or hydrostatic head externally of the casing string, in which the external pressure acting over the end area R of the Valve member 28 can overcome the internal pressure acting over the en d area S of the tubular valve member. When this occurs, and as the casing string is lowered to a further extent through the fluid in the well bore, the tubular valve member 28 moves upwardly away from its valve seat 37,' which can only be shifted upwardly by its spring 43 to the extent determined by engagement of vthe stop nut 42 with the spider hub 29, allowing the well bore fluid to ow through the apparatus A and into the casingstring B, Conce` again. Y When-the fluid level reaches the predetermined value governed by the aforenoted equation, the Ytubular valve member 28 will again be shifted downwardly into engagement with the valve seat 37, to prevent further upward flow of uid through the casing string, until the latter has been lowered to a still further level in the well bore.
At any time, circulation of fluid can be establishedk v downwardly through the casing string B, C without affect'-v ing the ability of the apparatusrto operate subsequently to automatically and controllably lill the casing string 6 with the well bore fluid as the casing string is being lowered in the well b'or'e.
At any time that the back pressure valve device -19 is to be rendered operative, as after the casing has been lowered to the required extent in the well bore, andprior to the cementing of the well casing B, C in the well bore, a tripping ball 60,which may be rather heavy, is dropped into the casing string at the top of the hole and is leither pumped or allo-wed to gravitate through the casing string until it enters the extension sleeve 29 and comes to rest upon a lower valve seat 61 in the extension sleeve immediately above a plurality vof side ports 62 therein. Such engagement of the trip ball 60 with the extension sleeve seat 61 closes the passage through the latter, allowing the pressure of the fluid in the casing string above the ball and sleeve to be increased, Since the tubular valve member 28 is engaging the housing shoulder 34 and cannot move downwardly, the pressure acting downwardly on the ball 60 and the extension sleeve 29 is tending to disrupt the shear screw or screws 30. When the pressure exceeds the shear strength of the screw or screws 30, the latter are disrupted and the extension sleeve 29 then shifted downwardly in the tubular valve member 28 into engagement with the valve seat 37, the upper end of the extension sleeve moving past the lower endof the flapper valve head 19, which is then freed to be urged in an upward direction` by its spring 21 into engagement with the valve Aseat 18. If Huid is now pumped down through the casing string B, C it will automatically swing the vflapper valve head 19 downwardly away from its seat 18, and will also force theextension sleeve 29 downwardly against the valve seat 37,fshifting the latter in a downward direction against the force of the compres-- sion spring 43 to dispose the side ports 62 in the extension sleeve below the lowerkend of the tubular valvemember 28. The uid can then pass ,down through the 'A upper central passage 17 in the apparatus past the ilapper valve head 19, through the tubular extension sleeve 29, through the side ports 62 in the latter to a position below the l'tubular' valve member 28, and through the spider` openings 44 into the casing C therebelow (FIG, 4).
.After the hole D has been properly conditioned by crrculatmg fluid down through the casing, which will then ilow upwardly through the annulus aroundvthe Vcas,
ing, cementitious material, such as cement slurry, can be pumped down the casing string B, flowingthrough the apparatus` A, which will then be in a condition illustrated in FIG. 4, into the lower casing section B, and thence outwardly into the annulus around the casing B, C 110W-,
ing upwardly through the annulus. When the pumping ceases, the cement slurry and the like cannot flow back into the casing string and through the apparatus A, since the apper valve head 19 will move upwardly into engagement with its seat 18, to preclude such upward flow,
It is, accordingly, apparent that an apparatus has been provided for controllably lling a casing string, or the like, during its lowering through the fluid in the well casing. Downward circulationthrough the casing' string a back pressure valve can 'be rendered effective to precan be accomplished at any time, followed by subsequent controlled filling of the casing string as it is being low` ered in the well bore to a further extent. AtV any time,
vent upward `or return iiowv of fluid into and through the casing string. i l
The inventors claim:
l. In well apparatus: a tubular member adapted to' form partV of a conduit string to be lowered in awel] bore; a valve device in said tubular member for allowing upward and downward flow 'of fluid in said tubular member, said device including first and second valve members engageable with each other to prevent upward .l flow of tluid through said tubular member, means mount-` mg said rst valve member for ,movement 4away from said second valve member to permit upward flow of iluid throughY said tubular member, means mounting said sec# ond valve member for movement away from saidl first'y valve member to permit downward ow of uid through said tubular member, said rst valve member having a resultant transverse area subject to the pressure of the fluid in the conduit string above the rst valve member substantially greater than the resultant transverse area of said irst valve member subject to the pressure of the uid in the conduit string below the lirst valve member, and means for shifting said second valve member back into engagement with said first valve member after said second valve member has been moved away from said iirst valve member and whilesaid rst valve member is adapted to move away from said second valve member to permit upward flow of uid through said tubular member.
2. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a valve device in said tubular member for allowing upward and downward flow of iluid in said tubular member, said device including upper and lower valve members engageable with each other to prevent upward flow of fluid through said tubular member, means mounting said upper valve member for upward movement away from said lower valve member to permit upward ow of iiuid through said tubular member, means mounting said lower member for downward movement away from said upper valve member to permit downward flow of liuid through said tubular member, said upper valve member having a resultant transverse area subject to the pressure of the fluid in the conduit string above said upper Valve member substantially greater than the resultant transverse area of said upper valve member subject to the pressure of the uid in the conduit string below the upper valve member, and means for shifting said lower valve member upwardly back into engagement with said upper valve member after said lower valve member has moved downwardly away from said upper valve member and while said upper valve member -is adapted to move upwardly away from said lower valve member to permit upward tlow of uid through said tubular member.
3. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a Valve device in said tubular member for allowing upward and downward flow of uid in said tubular member, said device including first and second valve members engageable with each other to prevent upward flow of fluid through said tubular member, means mounting said iirst valve member for movement away from said second valve member to permit upward flow of fluid through said tubular member, means mounting said second valve member for movement away from said rst valve member to permit downward ow of fluid through said tubular member, said rst valve member having a resultant transverse area subject to the pressure of the fluid in the conduit string above the first valve member substantially greater than the resultant transverse area of said rst valve member subject to the pressure of the fluid in the conduit string below the first valve member, and spring means engaging said second valve member to shift said second valve member back into engagement with said rst valve member after said second valve member has been moved away from said rst valve member and while said first valve member is adapted to move away from said second valve member to permit upward flow of uid through said tubular member.
4. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a valve device in said tubular member for allowing upward and downward flow of uid in said tubular member, said device including upper and lower valve members engageable with each other to prevent upward flow of` fluid through said Vtubular member, means mounting said upper valve member for upward movement away from said lower valve member to permit upward flow of tiuid through said tubular member, means mounting said lower member for downward movement away from said upper valve member to permit downward ow of iluid through said tubular member, said upper valve member having a resultant transverse area subject to the pressure of the fluid in the conduit string above said upper valve member substantially greater than the resultant transverse area of said upper valve member subject to the pressure of the Huid in the conduit string below the upper valve member, and spring means engaging said lower valve member for shifting said lower valve member upwardly back into engagement with said upper valve member after said lower valve member has moved downwardly away from said upper valve member and while said upper valve member is adapted to move upwardly away-from said lower valve member to permit upward flow of fluid through said tubular member.
5. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a valve seat in said tubular member; a tubular valve member slidable downwardly in said tubular member into engagement with said seat and upwardly from engagement with said seat; means mounting said valve seat in said tubular member for axial sliding movement upwardly into engagement with said valve member and downwardly from engagement with said valve member; said tubular valve member having a resultant transverse area subject to the pressure of the iiuid in the conduit string above the tubular valve member substantially greater than the resultant transverse area of said tubular valve member subject to the pressure of the fluid in the conduit String below the tubular valve member, and spring means engaging said valve seat to urge said valve seat upwardly into engagement with said valve member.
6. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a Well bore; a valve seat in said tubular member; a tubular valve member slidable downwardly in said tubular member into engagement with said seat and upwardly from engagement with said seat; means mounting said valve seat in said tubular member -for axial slidable movement upwardly into engagement with said valve member and downwardly from engagement with saidvalve member; said tubular valve member having a resultant transverse area subject to the pressure of the Huid in the conduit string above the tubular valve member substantially greater than the resultant transverse area of said tubular valve member subject to the pressure of the fluid in the conduit string below the tubular valve member, spring means engaging said valve seat to urge said valve seat upwardly into engagement with said valve member; and stop means engageable with said tubular valve member to limit its downward movement in said tubular member; said valve seat being movable downwardly away from said valve member against the force of said spring means when said valve member engages said stop means.
7. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a valve seat in said tubular member; a tubular valve member slidable downwardly in said tubular member into engagement with said seat and upwardly from engagement with said seat; means mounting said valve seat in said tubular member for axial slidable movement upwardly into engagement with said valve member and downwardly from engagement with said valve member; said tubular valve member having a resnltanttransverse area subject to the pressure of the fluid in the conduit string above the tubular valve member substantially greater than the resultant transverse area of said tubular valve member subject to the pressure of the uid in the conduit string below the tubular valve member, spring means engaging said Valve seat to urge said valve seat upwardly into engagement with said valve member; and
9 stop means engageable with said seat to limit its upward movement in said tubular member while permitting its downward movement away from said tubular valve member.
8. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore, said tubular member having a passage therethrough through which uid can ow in both upward and downward directions; back pressure valve means in said tubular member adapted to prevent upward flow of iluid through said tubular member while permitting downward flow of fluid therethrough; a valve device in said tubular member below said back pressure'valve means for allowing upward and downward iiow of uid in said tubular member upon opening of said device and to prevent such upward and downward flow of fluid upon closing of said device; means engaging said back -pressure valve means to hold it in open condition to permit upward flow of uid through said tubular member; and means releasably securing said holding means to said valve device While said valve device is conditioned ytoy allow both upward and downward iiow of fluid in said tubular member, said securing means being releasable to permit downward shifting of said holding means to a position permitting closing of said back pressure valve means.
9. In well apparatus: a tubular member adapted to form part of a conduit stringV to be lowered in a well bore; back pressure valve means in said tubular member adapted to prevent upward flow of fluid through said tubular member; a valve device in said tubular member for allowing upward and downwardl flow of fluid in said tubular member upon opening of said device and to prevent such upward and downward iiow of fluid upon closing of said device; means engagingfsaid back pressure valve means to hold it in open condition to permit upward flow of uid through said tubular member; means releasably securing said holding means in position engaged with said back pressure valve means while said valve device is conditioned to allow both upward and downward flow of ilud in said tubular member; and means adapted to be sent down the conduit string from the top of the well bore for eiecting release of said securing means and shifting of said holding means to a position allowing said back pressure valve means to close.
l0. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; back pressure valve means in said tubular member adapted to prevent upward iiow of fluid through said tubular member; a valve device in said tubular member below said back pressure valve means for allowing upward and downward flow of fluid in said tubular member upon opening of said device and to prevent such upward and downward iiow of uid upon closing of said device; tubular means engaging said back` pressure valve means to hold it in open condition to permit upward iiow of uid through said tubular member, said tubular means having a valve seat; means releasably securing said tubular means in position engaged with said back pressure valve means while said valve device is conditioned to allow both upward and downward flow of uid in said tubular member; and means adapted to be sent down the conduit string from the top of the well bore into engagement with said valve seat to enable said securing means to be released and said tubular means shifted downwardly to a position allowing said back pressure valve means to close.
1l. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; back pressure valve means in said tubular member adapted to prevent upward flow of fluid through said tubular member; a valve device in said tubular member upon opening of said device and to prevent such upward and downward iiow of lluid upon closing of said device for allowing upward and downward ilow of iluid in said tubular member; tubular means engaging said back pres'- sre valve 'means to hold it in open condition to permit upward ilow of iluid through said tubular member, said tubular means having a valve seat; means releasably securing said tubular means to said valve devicein a position engaged with said back pressure valve means while said valve device is conditioned to allow both upward and downward ilow of liuid in said tubular member; vand means adapted to be sent down the conduit string from the top of the well bore into engagement with said valve seat to enable said securing means to be released, and said tubular means shifted downwardly to a position allowing said back pressure valve means to close.
12. In well apparatus: a tubular member adapted to form part of a conduit'string to be lowered in a well bore; a first valve seat in said tubular member; a valve element movable upwardly into engagement with said seat to prevent upward ow of iluid through said tubular member; a second valve seat in said tubular member; a tubular valve member movable downwardly in said tubular member into engagement with said second seat; spring means engaging said second seat to urge said second seat upwardly into engagement with said valve member; a tubular extension; means releasably securing said extension to said tubular valve member and in position engaged with said valve element to prevent said element from engaging said first seat; and means adapted to be sent down the conduit string into enga-gement with said extension to release said securing means and shift said extension from said element to permit said element to engage said rst seat.
13. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a rst valve seat in said tubular member; a valve element movable upwardly into engagement with` said seat to prevent upward flow of fluid through said tubular member; a second Valve seat in said tubular member; a tubular valve member movable downwardly in said tubular member into engagement'with said second seat; spring means engaging said second seat to urge said second seat upwardly into engagement with said valve member; a tubular extension; means releasably securing said eXtension to said tubular valve member and in position engaged with said valve element to prevent said element from engaging said rst seat; and means for releasing said securing means to permit shifting of said extension from said element and engagement of said element with said first seat.
I 14. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a first valve seat in said tubular member; a valve element movable upwardly into engagement with said seat to prevent upward flow of iluid through said tubular member; a second valve seat `in said tubular member; a tubular valve member movable downwardly in said tubular member into engagement with said second seat; spring means engaging said second seat to urge said second seat upwardly into engagement with said valve member; a tubular extension; means releasably securing said extension to said tubular valve member and in position engaged with said valve element to prevent said element from engaging said first seat; means adapted to be sent down a conduit string into engagement with said extension to release said securing means and shift said extension from said element to permit said element to engage said irst seat; and stop means engageable with said tubular valve member to limit its downward movement in said tubular member; said second valve seat being movable downwardly away from said tubular valve member when said tubular valve member engages said stop means.
15. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a iirst valve seat in said tubular member; a valve element movable upwardly into engagement with said seat to prevent upward iiow of fluid through said tubular member; a second valve seat in said tubular member; a tubular valve member movable downwardly in said tubular member into engagement with said second seat; spring means engaging said second seat to urge said second seat upwardly into engagement withsaid valve member; a tubular extension; means releasably securing said extension to said tubular valve member and in position lengaged with said valve element to prevent said element from engaging said first seat; means adapted to be sent down a conduit string into engagement with said extension to release said securing means and shift said extension from said element to permit said element to engage said rst seat; stop means engageable with said tubular valve member to limit its downward movement in said tubular member; said second Valve seat being movable downwardly away from said tubular valve member when said tubular valve member engages said stop means; and stop means engageable with said second seat to limit its upward movement in said tubular member.
16. In well apparatus: a tubular member adapted to form part of a conduit string to be lowered in a well bore; a first valve seat in said tubular member; a valve element movable upwardly into engagement with said seat to prevent upward flow of Huid through said tubular member; a second valve seat in said tubular member; a
tubular valve member movable downwardly in said tubu# lar member into engagement with said second seat; spring means engaging said second seat to urge said second seat upwardly into engagement with said valve member; a tubular extension; means releasably securing said extension to said tubular valve member and in position engaged with said valve element to prevent said element from engaging said iirst seat; and means adapted to be sent down a conduit string into engagement with said extension to release said securing means and shift said extension from said element to permit said element to engage said rst seat; said extension being shiftable against said second seat to shift said second seat from said tubu-` lar valve member, said extension having an opening through which uid can flow when said extension is disposed against said second seat.
References Cited in the file of this patent UNITED STATES PATENTS gpo v par
US704603A 1957-12-23 1957-12-23 Subsurface apparatus for automatically filling conduit strings Expired - Lifetime US3011559A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148731A (en) * 1961-08-02 1964-09-15 Halliburton Co Cementing tool
US3220481A (en) * 1962-01-12 1965-11-30 Baker Oil Tools Inc Apparatus for automatically filling conduit strings
US3289769A (en) * 1964-05-15 1966-12-06 Koehring Co Well flow control device
US3292707A (en) * 1964-05-15 1966-12-20 Koehring Co Well flow control device
US3364999A (en) * 1966-02-14 1968-01-23 Brown Oil Tools Fill-up shoe for well pipes
US3419081A (en) * 1967-03-15 1968-12-31 Koehring Co Well cementing device
US3525394A (en) * 1968-05-28 1970-08-25 Dow Chemical Co Tool having combination seal and shear releasing mechanism
US4040488A (en) * 1976-09-27 1977-08-09 The Dow Chemical Company Differential valve
US4280524A (en) * 1979-03-23 1981-07-28 Baker International Corporation Apparatus and method for closing a failed open fluid pressure actuated relief valve
US4291723A (en) * 1979-03-23 1981-09-29 Baker International Corporation Fluid pressure actuated by-pass and relief valve
US4474241A (en) * 1983-02-14 1984-10-02 Halliburton Company Differential fill valve assembly
WO2003095790A1 (en) * 2002-05-10 2003-11-20 Weatherford/Lamb, Inc. Valve assembly with locking sleeve for use in a wellbore
US20110290344A1 (en) * 2010-05-24 2011-12-01 Blackhawk Specialty Tools, Llc Large bore auto-fill float equipment

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US1156657A (en) * 1915-06-15 1915-10-12 Howard F Beam Swab-unloader.
US2204340A (en) * 1939-06-01 1940-06-11 Halliburton Oil Well Cementing Releasable floating valve
US2442642A (en) * 1946-06-27 1948-06-01 John E Eckel Double-acting valve assembly
US2751021A (en) * 1953-04-27 1956-06-19 Baker Oil Tools Inc Apparatus for automatically filling conduit strings
US2768695A (en) * 1953-04-27 1956-10-30 Baker Oil Tools Inc Apparatus for controllably filling well casing
US2812821A (en) * 1954-12-02 1957-11-12 Larkin Packer Company Fill-up and cementing devices
US2812820A (en) * 1953-05-26 1957-11-12 Larkin Packer Company Fill-up and cementing devices
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156657A (en) * 1915-06-15 1915-10-12 Howard F Beam Swab-unloader.
US2204340A (en) * 1939-06-01 1940-06-11 Halliburton Oil Well Cementing Releasable floating valve
US2442642A (en) * 1946-06-27 1948-06-01 John E Eckel Double-acting valve assembly
US2751021A (en) * 1953-04-27 1956-06-19 Baker Oil Tools Inc Apparatus for automatically filling conduit strings
US2768695A (en) * 1953-04-27 1956-10-30 Baker Oil Tools Inc Apparatus for controllably filling well casing
US2841171A (en) * 1953-04-27 1958-07-01 Baker Oil Tools Inc Apparatus for automatically filling well bore conduit strings
US2812820A (en) * 1953-05-26 1957-11-12 Larkin Packer Company Fill-up and cementing devices
US2812821A (en) * 1954-12-02 1957-11-12 Larkin Packer Company Fill-up and cementing devices

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148731A (en) * 1961-08-02 1964-09-15 Halliburton Co Cementing tool
US3220481A (en) * 1962-01-12 1965-11-30 Baker Oil Tools Inc Apparatus for automatically filling conduit strings
US3292707A (en) * 1964-05-15 1966-12-20 Koehring Co Well flow control device
US3289769A (en) * 1964-05-15 1966-12-06 Koehring Co Well flow control device
US3364999A (en) * 1966-02-14 1968-01-23 Brown Oil Tools Fill-up shoe for well pipes
US3419081A (en) * 1967-03-15 1968-12-31 Koehring Co Well cementing device
US3525394A (en) * 1968-05-28 1970-08-25 Dow Chemical Co Tool having combination seal and shear releasing mechanism
US4040488A (en) * 1976-09-27 1977-08-09 The Dow Chemical Company Differential valve
US4291723A (en) * 1979-03-23 1981-09-29 Baker International Corporation Fluid pressure actuated by-pass and relief valve
US4280524A (en) * 1979-03-23 1981-07-28 Baker International Corporation Apparatus and method for closing a failed open fluid pressure actuated relief valve
US4474241A (en) * 1983-02-14 1984-10-02 Halliburton Company Differential fill valve assembly
WO2003095790A1 (en) * 2002-05-10 2003-11-20 Weatherford/Lamb, Inc. Valve assembly with locking sleeve for use in a wellbore
US20110290344A1 (en) * 2010-05-24 2011-12-01 Blackhawk Specialty Tools, Llc Large bore auto-fill float equipment
US8955543B2 (en) * 2010-05-24 2015-02-17 Blackhawk Specialty Tools, Llc Large bore auto-fill float equipment
US20150136404A1 (en) * 2010-05-24 2015-05-21 Blackhawk Specialty Tools, Llc Large bore auto-fill float equipment
US9328585B2 (en) * 2010-05-24 2016-05-03 Blackhawk Specialty Tools, Llc Large bore auto-fill float equipment

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