BAKER HUGHES INCORPORATED
`Exhibit 1025
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`Page 1 of 6
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`Page 2 of 6
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`U.S. Patent
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`Jan. 26, 1993
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`Sheet 2 of 2
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`5,181,569
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`1
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`PRESSURE OPERATED VALVE
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`5,181,569
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`BACKGROUND OF THE INVENTION
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`1. Technical Field
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`This invention relates to pressure operated valves
`used.in earth wells. More particularly, the present in-
`vention is a sleeve type valve releasably connected in a
`housing, which is operated by pressure to close and be
`expended from the housing.
`2. Background Information
`A sealing plug is usually installed in a pressure oper-
`ated packer or well tubing to close the packer or tubing
`and permit pressurization of tubing connected to the
`packer to set the packer in casing in an earth well. An
`example of one such device is shown by U.S. Pat. No.
`3,042,116 to Sharp et al. This patent discloses use of an
`adapter to connect an expendable sealing plug in a well
`packer and releasable latching means for holding the
`expendable sealing plug in the adapter. When con-
`nected in the packer,
`the plug closes the packer to
`through flow and there is no flow passage through the
`plug. The packer is lowered to setting depth with the
`plug connected in the packer and the plug is expended
`by application of tubing weight after use.
`When lowering a packer with a sealing plug installed,
`all liquid displaced by lowering the packer and tubing
`into the well flows from below to above the packer
`through the small annular space between the packer and
`casing in the well. Usually, the packer and tubing are
`lowered rapidly into the well casing causing displaced
`liquid volume to be great, resulting in high liquid veloc-
`ities through the small annular space. As most of the
`displaced liquids contain solid particles, the elastomeric
`sealing element on the packer may be abraded away or
`damaged by high velocity particles so that-it will not
`seal in the well casing properly when the packer is
`operated to set.
`Another example of a similar plug is shown in U.S.
`Pat. No. 3,216,504, “Plug for Well Conductors” to
`Roark. This plug is releasably lockable in a well packer
`having a latch head and is installed in the packer set in
`casing by lowering on a setting tool on tubing. This
`plug may be retrieved on tubing using the same setting
`tool or expended from the packer by application of
`tubing weight.
`Running tubing from surface into a well to install or
`expend a sealing plug from a packer is a time consuming
`and expensive operation, especially if long lengths of
`tubing must be run to reach a packer set deep in a well.
`SUMMARY OF THE INVENTION
`
`The valve of the present invention includes a housing
`connectible on the lower end of a hydraulic set packer
`and has an expendable sleeve valve releasably locked in
`the housing. The valve is placed in open position when
`connected to the packer to provide additional flow area
`for and reduce velocity of displaced fluids flowing
`around the packer as the packer is lowered into the
`casing. On arrival of the packer at setting depth, a ball
`is dropped from surface which seals in the pressure
`operated valve and permits pressure to be applied in the
`packer to set the packer and move the pressure operated
`valve to closed position. An even greater pressure ap-
`plied in the packer will disconnect and expend the
`sleeve valve from the housing.
`Use of the invention pressure operated valve will
`permit a hydraulic set packer to be run, set and tested
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`for sealing in well casing in one tubing trip and the
`pressure operated valve expended leaving the packer
`completely open for flow or passage of tools. Addi-
`tional costly trips with tubing are not required to re-
`trieve or expend the invention plug.
`An object of this invention is to provide a pressure
`operated valve which provides a flow passage between
`outside and inside the valve when in open position.
`Another object of this invention is to provide a pres-
`sure operated valve which may be operated to close by
`applying pressure on a ball sealingly engaging the
`valve.
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`Another object of this invention is to provide a pres-
`sure operated valve which when operated to close auto-
`matically latches in closed position.
`Also an object of this invention is to provide a pres-
`sure operated valve having a housing in which a sleeve
`type valve is connected and the sleeve type valve may
`be disconnected and expended from the housing on
`application of pressure on a ball sealingly engaging the
`sleeve valve.
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`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG. 1 is a sectioned drawing in elevation showing
`the valve of this invention connected in the housing in
`open position.
`FIG. 2 is a cross sectional drawing along lines 2-2 of
`FIG. 1.
`FIG. 3 is a drawing similar to FIG. 1 showing a ball
`sealingly engaging the valve of the present invention
`and the valve in closed and latched position.
`FIG. 4 is a drawing similar to FIG. 3 showing the
`invention valve disconnected from the housing just
`prior to being expended.
`FIG. 1 shows the valve 10 of this invention which
`includes a housing 11 in which the expendable sleeve
`valve 12 is releasably connected. The housing includes
`an appropriate connection 11a, a seal bore llb, an inter-
`nal groove 11c and a longitudinal flow passage lld.
`Expendable sleeve valve 12 includes a body 13, a
`lower body 14, a sleeve 15 with its lower end closed,
`lugs 16, a ring 17 and a latch ring 18. Shearable screws
`19 releasably position ring 17 in body 13 and shearable
`screw 20 releasably position sleeve 15 in body 13. Resil-
`ient seal 21 on body 13 sealingly engages housing seal
`bore 11b and provides a static and sliding seal between
`the body and housing. Likewise, resilient seal 22 on
`sleeve 15 provides a static and sliding seal between body
`seal bore 13a and the sleeve and resilient seals 23 pro-
`vide static and sliding seal with body seal bore 13b.
`Lugs 16 are mounted for radial movement in body
`openings 13c (see also FIG. 2) and the body has a num-
`ber of flow passages 13d. Lower body 14 is connected
`to body 13 at 24.
`Sleeve 15 has a large diameter 15a for moving lugs 16
`into engagement in groove llc to connect body 13 to
`housing 11. The sleeve also has a number of flow pas-
`sages 15c and a sealing surface 15d. The lugs may be
`moved in to contact the smaller diameter in groove 15b
`around the sleeve, when this groove is inside the lugs to
`disengage housing groove 11c and disconnect the body
`from the housing.
`The valve of this invention may be utilized to facili-
`tate the installation of a hydraulic set packer in well
`casing by sealably connecting to the lower end of the
`packer on surface with the valve in open position with
`flow passages 15c aligned with passages 13d as shown in
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`5,181,569
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`(c) means releasably positioning said valve sleeve in
`said body;
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`(d) a ring around said valve sleeve releasably p0Sl-
`tioned in said body;
`(e) means releasably positioning said ring in said
`body; and
`(0 means for latching said sleeve in said closed posi-
`tion.
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`3
`FIG. 1. As the packer is lowered into the well casing,
`displaced fluid flows from below to above the packer
`through the packer-casing annulus and from outside to
`inside the valve through passages 13a’ and 15c. The open
`valve also permits circulation between inside and out-
`side the packer at any desired time. When the packer
`reaches desired setting depth, a ball 25 is dropped or
`pumped down from surface to sealingly engage surface
`15d on the valve sleeve and prevent flow from inside to
`outside the packer. Required pressure is now applied to
`fluid in the packer to set the packer. Predetermined
`pressure greater than packer setting pressure will shear
`screws 20 and move sleeve 15 downwardly to the posi-
`tion shown in FIG. 3. Body openings 13d are closed to
`flow between outside and inside the valve as sleeve flow
`passages 15c and upper seal 23 have been moved below
`openings 13d. Latch ring 18 has sprung out under lower
`body shoulder 14a latching the sleeve in closed position.
`Larger diameter 15a retains lugs 16 engaged in housing
`groove 11c and body 13 connected in housing 11.
`Another increase in pressure to a greater predeter-
`mined pressure will shear screws 19 and move sleeve 15
`further downwardly as shown in FIG. 4. Ring 17 has
`stopped downward movement of the sleeve with
`smaller groove diameter 15b insidelugs 16. Sustained
`pressure on ball 25 will now move sleeve 15 and body
`13 downwardly, camming lugs 16 inwardly to discon-
`nect body 13 from housing 11 and move valve 12 down-
`wardly from housing bore llb expending the valve
`downwardly into the well from housing 11. Housing
`flow passage 11d is now completely open for two way
`flow and passage of well tools.
`_
`What we claim is:
`1.~A pressure operated valve comprising:
`(a) a cylindrical housing;
`(b) sleeve valve means for controlling flow between
`outside and inside said housing; said sleeve valve
`means releasably connected in said housing, said
`sleeve valve means including a valve sleeve having
`a sealing surface therein, said valve sleeve move-
`able downwardly from an open position, permit-
`ting flow between the outside and inside said hous-
`ing to closed position, preventing flow between
`outside and inside said housing, said valve sleeve
`further moveable to a released position disconnect-
`ing said sleeve valve means from said housing;
`(c) means for releasably connecting said sleeve valve
`means in said housing; and
`(cl) a ball for sealingly engaging said valve sleeve
`sealing surface and moving said sleeve from said
`open to closed to released position and expending
`said sleeve valve means from said housing.
`2. A valve according to claim 1 wherein the sleeve
`valve means comprises:
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`(a) a cylindrical body, said body having
`a seal thereon for sealingly engaging the cylindrical
`housing,
`openings and
`flow passages through said body wall,
`(b) the valve sleeve slidably mounted in said body and
`further including,
`a seal thereon for sealingly engaging said body,
`flow passages through said valve sleeve wall, said
`valve sleeve releasably positioned in said open
`position in said body with said valve sleeve flow
`passages aligned with said body flow passages,
`a seal above, and
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`a seal below said valve sleeve flow passages;
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`3. A pressure operated valve according to claim 1
`wherein the means releasably positioning the valve
`sleeve in the body is a shearable screw through the body
`wall near the lower end of the valve sleeve.
`4. A pressure operated valve according to claim 2
`wherein the means releasably positioning the ring in the
`body comprises:
`(a) a groove in said ring; and
`(b) shearable screws through the body wall into said
`groove.
`5. A pressure operated valve according to claim 2
`wherein the means for latching the valve sleeve in said
`closed position comprises:
`(a) a groove around said valve sleeve below the flow
`passages;
`(b) a spring ring contracted into said ring groove; and
`(c) a shoulder in the body.
`6. A pressure operated valve according to claim 2
`wherein the means for releasably connecting the sleeve
`valve means in the housing comprises:
`(a) an internal groove in said housing;
`(b) laterally moveable lugs mounted in the body
`openings;
`(c) a larger diameter surface on the valve sleeve for
`moving said lugs into engagement in said internal
`housing groove connecting the body to said hous-
`ing when said valve sleeve is in said open position;
`and
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`(d) a smaller diameter groove around said valve
`sleeve into which said lugs may be moved to disen-
`gage said internal housing groove when said valve
`sleeve is in said released position.
`7. A pressure operated valve comprising:
`(a) a cylindrical housing having a groove therein;
`(b) sleeve valve means for controlling flow between
`outside and inside said housing releasably con-
`nected in said housing, said sleeve valve means
`including: A
`a cylindrical body having seals thereon for sea]-
`ingly engaging said housing,
`openings through said body wall,
`lugs mounted for lateral movement in said open-
`mgs,
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`flow passages through said body wall, and
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`a lower internal shoulder therein,
`a valve sleeve slidably mounted in said bod
`a ring releasably positioned in said body around
`said valve sleeve,
`said sleeve valve having a sealing surface therein,
`' a seal thereon for sealingly engaging said body,
`smaller and larger diameter surfaces thereon,
`flow passages through said valve sleeve wall,
`a seal above and a seal below said flow passages,
`a latch ring contracted into said lower groove,
`said valve sleeve releasably positioned in an open
`position in said body where said body flow pas-
`sages and said valve sleeve flow passages are
`aligned permitting flow between outside and
`inside said housing and said valve sleeve larger
`diameter surface holds said lugs engaged in said
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`5,181,569
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`housing internal groove, connecting Said body to
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`closed position, preventing flow between outside 5
`and inside said housing by applying pressure in
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`sail. Gus‘? or,‘ a Fan Sealmgly engagmg HF
`sea mg sur ace in said valve sleeve, where said
`latch ring has sprung out under said lower body 10
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`shoulder latching the valve sleeve in said closed
`position,
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`said valve sleeve further moveable by application
`of greater pressure in said housing to move said
`smaller diameter surface inside said lugs permit-
`ting Said lugs t0 disengage Said housing internal
`groove disconnecting said sleeve valve means
`body from said housing and expending said
`Sleeve Vawe means from Said housing
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