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PRIORITY INFORMATION 
     This application is a continuation of U.S. patent application Ser. No. 11/348,754 filed on Feb. 7, 2006 and now U.S. Pat. No. 7,708,060, which claims the benefit of U.S. Provisional Application No. 60/652,374, filed on Feb. 11, 2005. 
    
    
     FIELD OF THE INVENTION 
     The field of this invention is the method of running a tubular inside casing and securing it and more particularly to techniques for protecting the mounting location for the tubular on the casing as the casing is cemented and thereafter cementing the liner after it is expanded into the mounting location. 
     BACKGROUND OF THE INVENTION 
       FIG. 1  is illustrative of the prior techniques of running in casing with a casing shoe  16  near its lower end. If later a tubular is run in and needs to be attached to the casing by expansion, the presence of cement debris in the support area on the casing where the tubular will be attached could prevent a sealed connection from being obtained. One way around that would be to deliver the cement into a shoe mounted below the point at which the liner will be attached later. Another method would be to run brushes and scrapers into the mounting location after cementing to be sure it was clean so that a good seal and support for the tubular subsequently installed can be obtained. However these techniques require significant amounts of time and create an associated cost. 
     The present invention protects the mounting location on the casing during cementing with a barrier sleeve that covers a recess. The barrier sleeve defines a sealed annular space that contains an incompressible material. This allows the barrier sleeve to be compliant to changes in hydrostatic pressure as the casing is lowered into place. Cementing is done through the barrier sleeve. The barrier sleeve is subsequently drilled out exposing a recess and a locating profile and optionally a sliding sleeve valve. The tubular can then be positioned accurately using the locating profile and a collet mechanism on the expansion tool and expanded in to sealing contact with the casing. Due to the recess, the drift diameter of the tubular after expansion into the recess is at least as large as the casing drift diameter. The entire tubular can be expanded to its lower end and a run in shoe at the lower end of the tubular can be retrieved and removed from the well with the swaging assembly and the running string that delivered it. The sliding sleeve in the casing shoe can be selectively opened and closed with a shifting tool run on the expansion string above the expansion tools, running tool, and the liner to be expanded. Another option is for this sliding sleeve to be located in the liner to be expanded below the upper portion that mounts in the above casing. The port opened and closed by this sliding sleeve can be used to either pump cement into the annulus or to return the wellbore fluid displaced by cement from the annulus into the casing string. When the sliding sleeve is in the casing shoe, to allow for fluid flow between the outside of this port and the annulus below the shoe after the shoe has been cemented with the string to which it is attached an additional outer sleeve is run on the outside of the recess sleeve. This outer sleeve is connected at its lower end to the inner barrier sleeve via a guide nose. The flow path between the outside of the ports and the annulus is opened when the nose is drilled out and under reamed. A cement retainer device is to be located at the bottom of the string preventing cement pumped into the annulus from entering into the expanded liner due to density differences. This retainer device can be the location from which cement is pumped into the annulus or where the wellbore fluid displaced by the cement is returned from the annulus to the inside of the casing string. The cement retainer can be drilled out in a subsequent trip into the hole. These advantages and others of the present invention will be readily appreciated by those skilled in the art from a review of the description of the preferred embodiment and the claims that appear below. 
     SUMMARY OF THE INVENTION 
     An apparatus to protect the mounting area of casing and a locating profile and optionally a sliding sleeve valve and a flow path from the outside of the valve to the annulus when subsequent attachment of an expanded liner is intended and the expanded liner is to be cemented in place. A barrier sleeve, nose, and outer sleeve define a sealed cavity having a loose incompressible material inside that covers the mounting location on the casing. A locating profile and an optional sliding sleeve valve and a flow path from the outside of the valve to the annulus can be provided. The cementing of the casing takes place through the barrier sleeve. After the cementing, the sleeve and nose are drilled out and the incompressible material is removed to the surface with the drill cuttings. A liner is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. After expansion a cement retainer positioned at the bottom of the expanded liner and the sliding sleeve located either above the mounting location of the liner in the casing shoe or in the liner below the mounted top section allow cement to be delivered outside the expanded liner and the displaced wellbore fluid to return into the casing through so that the liner can be cemented. The cement retainer can be delivered with either the liner or the expansion tools to allow expansion and cementing in a single trip. A shifting tool can be run on the expansion string to actuate the sliding sleeve and if necessary to allow for cement to be pumped from the drill string into the annulus through the sliding sleeve. The cement retainer can be milled out in a separate trip. 
    
    
     
       DETAILED DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a prior art production casing illustrating a standard casing shoe at the lower end; 
         FIG. 2  shows a production string with the shoe track of the present invention; 
         FIG. 3  shows the production casing with the shoe track of the present invention run into the wellbore; 
         FIG. 4  is the view of  FIG. 3 , after cementing; 
         FIG. 5  is the view of  FIG. 4  showing the shoe track exposed after drillout and the wellbore extended below the production casing; 
         FIG. 6  is the view of  FIG. 5  showing the reaming of the extension bore just drilled; 
         FIG. 7  is a close up view of the now exposed shoe; 
         FIG. 8  shows the liner run in on a running tool and in position to be expanded; 
         FIG. 9  is the view of  FIG. 8  indicating the initial stroking of the swage, which results in release from the running tool; 
         FIG. 10  is the view of  FIG. 9  showing the anchor released and weight being set down to reposition for the next stroke of the swage; 
         FIG. 11  is the view of  FIG. 10  showing the next stroke of the swage; 
         FIG. 12  is the view of  FIG. 11  showing the swage advancing toward the lower end of the liner; 
         FIG. 13  is the view of  FIG. 12  with the swage now engaging the running shoe of the liner at its lower end; 
         FIG. 14  is the view of  FIG. 13  with the liner fully expanded and the swage being removed with the running shoe by withdrawing the running tool from the fully expanded liner; 
         FIG. 15  is a close up view of the sleeve protecting the recessed shoe during cementing; 
         FIGS. 16   a - 16   b  show the capture of the guide nose assembly; 
         FIGS. 17   a - 17   b  show the shearing out of the guide nose assembly from the tubular or liner; 
         FIGS. 18   a - 18   b  show the guide nose fully released and captured; 
         FIGS. 19   a - 19   b  show the emergency release feature; 
         FIG. 20  shows a casing shoe in its run in configuration with locating profile, sliding sleeve valve closed over a port, recessed expanded liner mounting location, barrier sleeve, guide nose and outer sleeve; 
         FIG. 21A  is a view of the casing shoe in  FIG. 20  as it is being drilled and under reamed with the valve closed; 
         FIG. 21B  is a view of the casing shoe in  FIG. 20  after it has been drilled and under reamed with the valve closed; 
         FIG. 22  shows a liner expanded in place; 
         FIG. 23  shows expansion of a liner with a swage; 
         FIG. 24  is the view of  FIG. 23  showing the removal of the swage and guide nose; 
         FIG. 25  shows a separate run to insert the cement retainer for cementing; 
         FIG. 26  is the view of  FIG. 25  showing the cement retainer set in place and disengaged by its running tool, while the shifting tool is opening the sliding sleeve valve; 
         FIG. 27  shows cement being pumped into the annulus through the drill string and cement retainer and the displaced wellbore fluid being returned through the sliding sleeve valve into the casing; 
         FIG. 28  shows the sliding sleeve valve being shut by the shifting tool as the drill string is pulled from the well; 
         FIG. 29  shows a drill string milling away the cement retainer before it continues on to drill the next section; 
         FIG. 30  shows a closable aperture for use in cementing located in the portion of the liner to be expanded; 
         FIG. 31  shows a cementing shoe delivered with the liner before expansion and the swage initiates expansion; 
         FIG. 32  shows the expansion of  FIG. 31  complete and the cementing shoe tagged into by the bottom hole assembly; 
         FIG. 33  is the view of  FIG. 32  with cement delivered down the string and through the cementing shoe; 
         FIG. 34  is the view of  FIG. 33  after cementing and removal of the bottom hole assembly leaving the cementing shoe in place; 
         FIG. 35  is the view of  FIG. 34  showing the cementing shoe being milled out; 
         FIG. 36  shows an alternative to  FIG. 31  delivering the cement retainer at the bottom of the swage assembly used for expanding; 
         FIG. 37  is an alternative to  FIG. 36  where the shoe is delivered with the swage assembly; 
         FIG. 38  shows cementing by delivering into the top of the annulus of the expanded liner and taking well fluid returns through the shoe; 
         FIG. 39  shows removal of the swage assembly from the shoe after the cement is delivered to hold the cement in place; 
         FIG. 40  shows the shoe being drilled or milled out after the cementing is concluded; 
         FIG. 41  show an expandable tubular run in with a cementing isolation device near the lower end of the string and inside it; 
         FIG. 42  is the view of  FIG. 41  with the cementing isolation device outside the tubular; 
         FIG. 43  shows the expansion nearly complete; 
         FIG. 44  shows the expansion system engaging the isolation device and moving down to conclude the expansion; 
         FIG. 45  shows the cementing device repositioned in the tubular and ready for cementing; 
         FIG. 46  shows cementing through the expansion assembly and the cementing device; and 
         FIG. 47  shows the cementing device milled out after cementing. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       FIG. 1  illustrates a casing string  10  having a known landing collar  12  and a standard float collar  14  as well as a casing shoe  16  adjacent its lower end  18 . Typically, in the past, the cement is pumped through the casing shoe  16  and then a dart or wiper is used to displace cement from the casing  10  and out through the shoe  16  and into the surrounding annulus. When the well is to be drilled deeper, the shoe  16  is drilled out but residual cement could still be present. The presence of such cement or shoe debris after drilling can affect the seal that is subsequently needed when a liner is inserted and secured to the casing  10 . This is particularly a concern when the liner is to be expanded to secure it to a recessed mounting location at the bottom of the casing  10 . 
     The present invention addresses this concern with a barrier sleeve  20  shown in  FIGS. 2 and 15 . As shown in  FIG. 15 , the casing string  22  has a lower section  24 . Inside section  24  is a barrier sleeve  20  mounted and defining an annular space  28  that contains an incompressible material  30 . Preferably the incompressible material  30  is loosely mounted sand but other materials can be used. The purpose of the material  30  is to control the burst of barrier sleeve  20  and the collapse of recessed mounting location  24  in response to increasing hydrostatic pressures as the depth of the casing  22  increases, when it is lowered into initial position. Sleeve  20  is preferably fiberglass sealed at ends  32  and  34 . Sleeve  20  initially covers locating profile  36  and recessed mounting location  38 , which will later serve as the location for securing a tubular such as a liner by a variety of methods. The preferred method of expansion will be described in more detail below. Sleeve  20  is preferably a material that can be quickly drilled such as plastics or composites, to mention a few. During cementing of the casing  22 , the sleeve  20  has an inner surface  40 , which is contacted by the cement. Ultimately a dart or wiper plug  42  passes through casing  22  and lands on landing collar  12  (see  FIGS. 3 &amp; 4 ) to displace most of the cement out of the casing  22  and into the surrounding annulus. The sleeve  20  is subsequently drilled out allowing the incompressible material  30  to escape and exposing the clean locating profile  36  and recessed mounting location  38  for subsequent attachment of a tubular as will be described below. The drilling removes all of seal rings  42  and  46  without damaging the casing  22  or recess sleeve  24 . 
     The method can be understood by beginning at  FIG. 3 , where the casing  22  is mounted in the desired position for cementing in the wellbore  26 . The assembly includes landing collar  12  and float collar  14 . The assembly shown in  FIG. 15  is at the lower end of the assembly, but for clarity only the barrier sleeve  20  is referenced in the schematic illustration. 
       FIG. 4  shows that cement  48  has been displaced by plug  42  landing on landing collar  12 . As a result, cement  48  is pushed through sleeve  20 , through run in shoe  50  and into annulus  52 . 
     In  FIG. 5 , a drill string  54  with a bit assembly  56  has been advanced through the casing  22  and has milled out the wiper  42  and the sleeve  20  to expose locating recess  36  and long recess  38 . The incompressible material  30  is released and circulated to the surface with the drill cuttings from the action of bit assembly  56 . 
       FIG. 6  illustrates the enlarging of the new section of wellbore  58  to a new dimension  60  using an under-reamer or an RWD bit  62 . Depending on the nature of the bit assembly  56 , the wellbore  60  can be created in a single trip in the hole or in multiple trips.  FIG. 7  shows the drilling of wellbore  60  complete and the drill string  54  and bit assembly  56  removed from the wellbore  60  and stored at the surface. 
       FIG. 8  shows a running string  64  that supports a liner or other tubular  66  at locking dogs  68 . The assembly further comprises an anchor  70  with slips  72  that are preferably pressure sensitive to extend slips  72  and allow them to retract when pressure is removed. Also in the assembly is a piston and cylinder combination  74  that drives a swage  76 , in response to pressure applied to the piston and cylinder combination  74 . Initially, as illustrated in  FIG. 9 , pressure is applied to extend the slips  72  and drive down the swage  76  as illustrated schematically by arrows  78 . The upper end or expandable liner hanger  80  of the tubular  66  is expanded into recessed mounting location  38  for support from casing  22 . The swage  76  is then stroked enough to suspend the tubular  66  to casing  22 . As illustrated in  FIG. 10 , when weight is set down at the surface, after internal pressure is removed, the slips  72  have been released and the piston and cylinder combination  74  is re-cocked for another stroke for swage  76 . The dogs  68  become undermined and release their grip on tubular  66  as the piston and cylinder combination is re-cocked.  FIG. 11  shows the subsequent stroking, further expanding the tubular  66 . Optionally, one or more open hole packers  82  can be used to ultimately make sealing contact in wellbore  60  after expansion. 
       FIG. 12  illustrates the continuation of the movement of the swage in response to applied surface pressure to anchor  70  and piston and cylinder combination  72 . Those skilled in the art will appreciate that force magnification can be incorporated into piston and cylinder combination  72  and it is possible for a greater force can be applied to swage  76  at the beginning of each stroke as compared to the balance of each stroke. These features were disclosed in co-pending U.S. application Ser. No. 60/265,061 whose filing date is Feb. 11, 2002 and whose contents are fully incorporated herein as if fully set forth. However, other techniques can be used for swaging or even to secure the tubular  66  to long recess  38  or another location initially covered by a sleeve such as  20  during cementing of the casing  22 , without departing from the invention. 
     Eventually in  FIG. 13 , the running string  64  expands the open hole packers  82  into sealing contact with the wellbore  60  as it approaches the run in shoe  84  mounted near the lower end  86  of tubular  66 . A grasping mechanism  88  is shown schematically at the lower end of the expansion string  64 . Contact is made and the run in shoe  84  is released and grabbed by mechanism  88 . Swage  76  expands lower end  86  of tubular  66  enough so that the run in shoe can be retrieved through it. When the string  64  is removed from the wellbore  60  and to the surface, it takes with it the anchor  70 , the piston and cylinder combination  74  and the run in shoe  84 , leaving a large opening  90  in the lower end of tubular  66 , as shown in  FIG. 14 . Those skilled in the art will appreciate that the run in shoe  84  facilitates insertion of the tubular  66  by presenting a guide nose as the tubular is initially advanced into position, as shown in  FIG. 8 . Optionally, it has a valve in it to check upward flow and allow downward circulation to facilitate insertion of the tubular  66 . Removal of the run in shoe  84  as described above presents a large opening in the lower end of the tubular  66  to facilitate subsequent drilling operations or other completion techniques. 
       FIGS. 16-19  show the grasping mechanism  88  in greater detail. It has a top sub  100  connected at thread  102  below dogs  68 . Top sub  100  is connected to mandrel  104  at thread  106 . The run in shoe  84  is attached to tubular  66  by virtue of ring  108  held against rotation by pin  110 , which extends from shoe  84 . Threads  112  on ring  108  engage threads  114  on tubular  66 . Ring  116  holds ring  112  in position on shoe  84 . Shoe  84  has a groove  118  and a stop surface  120 . Top sub  100  has a surface  122  that lands on surface  120  as the grasping mechanism  88  advances with the swage  76 . When surface  122  hits surface  120  the tubular  66  has not yet been expanded. Mandrel  104  has a series of gripping collets  124  that land in groove  118  when surfaces  120  and  122  contact. When this happens, as shown in  FIG. 16   a  the collets are aligned with recess  126  on mandrel  104  so that they can enter recess  118  in shoe  84 . Mandrel  104  has a ring  128  held on by shear pins  130 . When a downward force is applied to shoe  84  through the contact between surfaces  120  and  122 , threads  112  and  114  shear out and the shoe  84  drops down and is captured on ring  128 . At this point, shown in  FIG. 17   a , surface  132  on mandrel  104  supports collets  124  in groove  118 . The shoe  84  is now captured to the mandrel  104 . As the mandrel  104  moves down in tandem with the swage  76 , the tubular  66  is expanded to bottom. Thereafter, the swage  76  and the grasping mechanism  88  and the attached shoe  84  can all be removed to the surface, as shown in  FIG. 18   a . If, for any reason the shoe  84  fails to release from the tubular  66  or gets stuck on the way out to the surface, a pull on the string  64  shears out pins  130 , allowing the collets  124  to become unsupported as surface  134  is presented opposite recess  118  as shown in  FIG. 19   a . Those skilled in the art will appreciate that other devices can be used to snare the shoe  84  as the swage  76  advances. The ability to remove shoe  84  is advantageous as it removes the need to mill it out and further reduces the risk of the shoe  84  simply turning in response to a milling effort, once it is no longer held against rotation by the now expanded tubular  66 . 
     Those skilled in the art will now appreciate the advantages of the above described aspects of the present invention. The sleeve  20  shields a subsequent mounting location for the tubular  66  on casing  22  from contamination with the cement  48  used in the installation of casing  22 . Thus regardless of the method of sealed attachment between the tubular  66  and the casing  22 , there is a greater assurance that the proper sealing support will be obtained without concern that cement may have fouled the mounting location. The assembly including the sleeve  20  is compliant to changes in hydrostatic pressure resulting from advancement of the casing  22  downhole. At the conclusion of expansion or other technique to secure tubular  66  to casing  22 , the lower end of the tubular  66  is left open as the run in shoe  84  is retrieved. 
     In certain jurisdictions or with certain operators, just trying to seal around the expanded liner  66  with external packers  82  is not adequate and there is a desire to meet local regulations and provide a monobore completion with the ability to cement the expanded liner. The preferred embodiment of this invention allows such cementing to occur and the expansion and cementing process for the liner to occur in either one or two trip. Comparing the casing shoe of  FIG. 15  with that of  FIG. 20  it can be seen that they are the same but the version of  FIG. 20  has an additional feature of a sliding sleeve valve  200  illustrated in the closed position in  FIG. 20 . The recessed mounting location  202  is covered by a barrier sleeve  204  whose position is maintained with one or more centralizers  206 . An incompressible filler material or fluid  208  initially occupies the volume behind the barrier sleeve  204  and inside the recessed mounting location  202 , the volume between outer sleeve  210  and recess sleeve  209 , and the volume above guide nose  207  and between outer sleeve  210  and barrier sleeve  204 . This continuous volume containing filler material or fluid  208  will be run in without applied pressure. As the shoe is run in the hole the hydrostatic pressure inside of the barrier sleeve  204 , below the guide nose  207 , and outside of the outer sleeve  210  will increase as collapse pressure on the items defining the volume. Burst disks  203  can be included in the guide nose  207  to allow communication between the volume containing the filler material or fluid  208  and the wellbore the shoe is being run in after a certain differential pressure is reached. This communication equalizes the pressure removing the collapse forces. During equalization wellbore fluid can enter the filler material or fluid volume and coexist with the filler material or volume  208 . For run in the sliding sleeve valve  200  is preferably closed rather than the open position shown in  FIG. 20  but either position can be used because the space occupied by filler material  208  is isolated so no flow can occur though while the casing attached at connection  212  is being cemented. The cement should not enter through the burst disks  203  as the volume is equalized in pressure and captured from flow. After the casing is cemented, a bit is inserted to drill out the protective assembly of the sleeve  204 , centralizers  206 , and parts of guide nose  207 , as depicted in  FIG. 21A . The filler material or fluid  208  is removed to the surface with circulation. The nose and the wellbore below it are then under reamed and the condition depicted in  FIG. 21B  is achieved. The drilling and under reaming is continued to extend the wellbore to accept the next section of tubular  218  In  FIG. 21B  sliding sleeve valve  200  is exposed as is recessed mounting location  202 . Port  214  is closed and arrow  216  indicates no flow through it is possible.  FIG. 22  shows the next section of tubular  218  in position and expanded into recessed mounting location  202  and beyond. As shown in  FIG. 23 , the assembly to do this expansion can include a combination of an anchor and stroker shown schematically as  220  that is connected to a swage  222  that can be of any number of different designs. As shown in  FIG. 20 , sliding sleeve valve  200  has a groove  224  that is preferably engaged at before expansion of the top of the expanded liner or expandable liner hanger by a collet assembly located on the stroker tool  220  that operates bidirectionally so that on the trip down with the liner  218 , the stroker  220  the collet can provide a confirmation indication of overpull or set down weight that the liner is in the proper location for expansion of its top inside of the recessed mounting location  202 . Tubular string  218  preferably has no external packers to seal the annulus  228  that extends around it. As shown in  FIG. 24 , it is possible for a guide nose  230  to be run on the bottom of the expandable liner and retrieved after expansion by a retrieval tool  226  at the bottom of the expansion string. 
       FIGS. 25-29  illustrate a 2 nd  trip method of cementing the expanded liner. A cement retainer  234  is run in on a work string  236  below a shifting tool  232 . First, the cement retainer  234  is to be set at the bottom of liner  218 . At this point, any pressure tests can be performed to confirm that the cement retainer  234  is set properly as valve  200  is closed. Next as shown in  FIG. 26 , the running tool  235  for the cement retainer  234  is released and the work string  236  is tripped up hole. As the shifting tool  232  passes through the valve a similar collet assembly engages the groove  224 . With this indication weight is set down and the drill string is turned to the right. Spring loaded dogs on the shifting tool  232  engage slots in the sliding sleeve valve  200  causing the sliding sleeve valve  200  to unscrew down opening it. Once the sliding sleeve valve  200  has been opened the work string  236  is tripped down hole reengaging the cement retainer running tool  235  into the cement retainer  234 . As shown in  FIG. 27 , cement  237  is delivered through the work string  236 , the shifting tool  232 , the cement retainer running tool  235 , and the cement retainer  234  and into the annulus  228  around the tubular string  218 . Wellbore fluids  239  displaced by the pumped cement from annulus  228  go through sliding sleeve valve  200 . In  FIG. 28 , the shifting tool  232  is located in the sliding sleeve valve  200  and forces the sliding sleeve  200  shut on the way out trapping the cement  237  in the annulus  228 .  FIG. 29  shows a separate trip in which the cement retainer  234  is milled out by a drill bit  244  before continuing on to drill the next hole section. 
     Yet another option is for the sliding sleeve valve  200  to be located in the top of the expanded liner string  218 , just below the mounted section  231 . This arrangement is shown in  FIG. 30 . This sliding sleeve valve  200  would be expanded along with the liner string  218  which it is part of to allow for at least as large a drift as the parent casing above it. Once expanded it would be operated as mentioned above and all cementing methods discussed in this application could be applied. 
     A method of running the expandable liner string  218 , mounting the upper section of the liner string  218  to the recessed mounting location  202  via expansion, continuing on to expand the entire liner string  218 , setting a cement retainer  234  in the bottom of the expanded liner string  218 , opening a sliding sleeve valve  200  for the return of displaced wellbore fluids  239  from the annulus  228 , pumping cement  237  in to the annulus, and closing the sliding sleeve valve  200  in one trip is illustrated in  FIGS. 31-35 . The primary difference between this method and that detailed above and in  FIGS. 25-29  is that the cement retainer  234  is run in on the same trip as the liner  218  and expansion tools  220 .  FIG. 31  illustrates a liner  218  that has been delivered and mounted in the recessed mounting location  202  with the guide shoe  230  and the cement retainer  234  already in place as a combined device  246 . As soon as the expandable liner  218  is mounted and adequate length has been expanded the sliding sleeve valve  200  can be opened as discussed above by shifting tool  232 . The expansion tool  220  then returns to expanding the liner string  218 . When the expansion tool  220  tags into the device  246 , as shown in  FIG. 32 , cement  237  can be pumped from the surface through the expansion string  236  that extends to the surface. As previously described, the displaced wellbore fluid  239  from cementing go through now open sliding sleeve  200  and to the surface through annulus  240 .  FIG. 33  shows the cement  237  pumped into the annulus  228 .  FIG. 34  shows the expansion string  236  removed which results in the closure of sliding sleeve valve  200 . The device  246  has been left in the borehole for a subsequent trip with the mill or bit  244 , as shown in  FIG. 35 . 
       FIGS. 36 and 37  illustrate alternative ways to deliver a cementing shoe  268  to the lower end of a liner  270 . In  FIG. 36 , the shoe  268  is delivered with the liner  270  and sits on or near its bottom during the expansion with the swage  272 . Eventually, a gripping device  274  engages the shoe  268  to allow it to pass well fluids in the case of cement being delivered into the annulus  276 . After a pre-measured amount of cement is delivered the gripping device is raised to stop the cement in the annulus  276  from coming into the liner  270 . This technique is illustrated in  FIGS. 38-40 . In  FIG. 38  arrows  278  indicate displaced well fluids from pumping cement represented by arrow  280  through ports  262 . The cement is delivered down the string  282  and with the help of a diverter device known in the art allows the cement  280  to go down the annulus  270 . After a pre-measured quantity of cement has been delivered to the annulus  270  the swage  272  is picked up closing the passages in the shoe  268 , as shown in  FIG. 39 . The shoe  268  is later drilled or milled as shown with a bit or mill  286 . The hole may then be drilled deeper and expanded in diameter with under-reamer  288 . While introducing cement at the top of the liner has been described those skilled in the art will appreciate that cement can be pumped down through the shoe  268  and well fluid displaced out openings such as  258  or  262 , as an alternative technique for cementing. 
       FIG. 41  shows the expandable tubular or liner  300  delivering a cement isolation device  302  located near the lower end and inside the liner  300 .  FIG. 42  is the same except the cement isolation device is extending beyond the lower end of the liner  300 . In  FIG. 43  the liner  300  is expanded by the swage assembly  304  and the expansion has progressed to near the end of the liner. In  FIG. 44 , the cement isolation device is captured as the swage assembly  304  finishes the expansion out through the end of the liner  300 . In  FIG. 45  the swage assembly  304  is raised up positioning the cement isolation device  302  in sealing contact with the liner  300 . In  FIG. 46  the cement  306  is pumped through the string  308  and the swage assembly  304  and into the annulus  310 . After cement delivery, the string and swage assembly  304  is removed and a mill  312  is run into the liner  300  to mill the cement isolation device  302  out. The cement isolation assembly can employ an actuable seal  314  that can be energized by pressure or mechanically or in other ways to seal against the inner wall of the liner  300  when brought back inside it. The ability to take the device  302  right through the liner  300  allows the swage assembly  304  to go clean through to the end of the liner  300  in expanding it. The actuable seal  314  then allows the device  302  to seal against the now enlarged liner  300 . The device  302  can be made of soft metals or non-metallic materials to shorten milling time shown in  FIG. 47 . The advantage to delivering the device  302  below the liner  300  is that it can be larger so that after expansion of the liner  300  and the device  302  needs to be brought back into sealing contact in the liner, the gap to bridge is that much smaller. The device  302  can be configured to allow fluid to pass through in one or both directions during run in to facilitate insertion. While the tubular  300  is referred to as a liner other structures involving openings such as screens or slotted liners or casing can also be used in the described method.  FIGS. 41-47  illustrate a one trip deliver, expand and cement system. 
     The foregoing disclosure and description of the invention are illustrative and explanatory thereof, and various changes in the size, shape and materials, as well as in the details of the illustrated construction, may be made without departing from the spirit of the invention.

Summary:
An apparatus to protect the mounting area of casing and a locating profile and optionally a sliding sleeve valve and a flow path is provided from the outside of the valve to the annulus when subsequent attachment of an expanded liner is intended and the expanded liner is to be cemented in place.