MX2007014406A - Universal tubing hanger suspension assembly and well completion system and method of installing same - Google Patents

Abstract

A tubing hanger suspension assembly for an oil and gas well completion system and a method of installing same. The tubing hanger suspension assembly includes a tubing hanger housing which is positioned in the wellhead housing. The tubing hanger assembly includes a sealing and lockdown mechanism capable of providing sealing and load support of the production tubing in the production casing string. A stab sub assembly connected to the upper end of the tubing hanger suspension assembly and lower end of the Christmas tree assembly provides downhole hydraulic and electric functionality and annulus access to the production tubing.

Description

ASSEMBLY OF UNIVERSAL SUSPENSION TO HANG PIPE AND SYSTEM OF PREPARATION OF WELLS AND METHODS TO INSTALL THEM BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates primarily to an assembly for subsea wellbores for an oil and gas well, and more particularly refers to a suspension assembly for hanging tubing to use an assembly for Submarine Wells The invention also relates to suspension assemblies for hanging pipe for terrestrial wells assemblies. 2. Description of the Prior Art A typical submerged wellhead assembly includes an enclosure for the wellhead installed on the bed marine With a drilling operation prevention stack (BOP) installed in the wellhead housing, the wellbore is drilled while successively rows of concentric decks are installed in the wellbore. Typically each row of successive decks is stuck on its lower end and includes a cover hanger sell With a mechanical seal assembly at its upper end in the wellhead housing In order to produce the coated well, a row of production pipes and pipe hangers are typically introduced into the wellbore through stacking BOP, and the pipe hanger is supported is sealed and fixed in the well housing and / or the cover hanger After sealing the holes that extend through the pipe hanger, the BOP stacking It removes and a Christmas tree is inserted into the well's mouth housing. A Christmas tree is a term used in the oil field that refers to a control valve assembly and regulators placed on top of a well to control the flow of oil and gas It is vital for the operation and safety of the well that the appropriate connections are remotely formed between the Christmas tree, the lodging of the mouth of the well and the pipe hanger, the wellhead housing and the pipe hanger In a conventional prepared well system The Christmas tree is connected to the upper part of the well housing through a well pipe hanger The pipe hanger supports at least one row of production pipes and a conduit that communicates with the ring that surrounds the row of pipes and within the row of innermost or production covers In addition, a pipe hanger includes at least a vertical production perforation to communicate the fluid between the row of pipes and a corresponding vertical perforation to communicate the fluid between the row of pipes and a corresponding production hole in the Christmas tree, and typically at least one vertical annular perforation to communicate fluid between the pipe ring and a corresponding annular hole in the Christmas tree The pipe hanger may additionally include one or more service and control conduits for communicating control fluids and well chemicals through the pipe hanger or electrical power to devices or positions located in or below the pipe hanger A pipe hanger is conventionally sealed and rigidly fixed in the borehole of the well the component on which it is supported. In a well that has a conventional Christmas tree, the pipe hanger rests on the wellhead housing The pipe hanger typically includes an integral locking mechanism that when activated sets the pipe hanger to the wellhead housing or a profile of the roof hanger The locking mechanism ensures that any subsequent pressure of inside the well that acts on the pipe hanger does not cause the pipe hanger to rise from the pit well housing resulting in an unsafe condition. There are a limited number of manufacturers of underwater wellhead equipment around the world. Primary manufacturers of the offshore wellhead housings are ABB Veteo Gray, Cooper Cameron Corp, Dpl-Quip, FMC and Kvaerner Each of the primary manufacturers has its own design of wellhead housing and roof hangers, dimensions and details. Very often, a well is prepared in a housing of the well manhole and cover hangers from manufacturer A that use a pipe hanger and / or a Christmas tree from manufacturer B However, since the design of the housing and cover hanger from manufacturer A is private, manufacturer B can not connect your pipe hanger and / or Christmas tree to the accommodation of manufacturer A without paying license fees to manufacturer A in order to design the equipment of manufacturer B to interconnect appropriately and match the wellhead housing and The manufacturer's cover hanger A This results in an additional amount of engineering and additional costs or equipment (such as a pipe reel) when you choose to purchase the equ Type of manufacturer B for use with manhole housing of manufacturer A Since each wellhead housing system manufacturer has multiple housing models and roof hanger with different private details, it is not practical or economical to Other manufacturers make an inventory of equipment for installation in the wellhead equipment of another manufacturer In addition to the added costs, it also increases the delivery time that is often of vital importance to the owner of the well 3. Identification of the objectives of The Invention A primary objective of this invention is to provide a subsea well preparation system that is adapted for use with wellhead wells of other manufacturers. Another object is to provide a tubing hanger assembly adapted to be placed in the well housing. the mouth of the well independently of any detail private property of Wellhead Housing Another object is to provide a universal pipe hanger assembly that is adapted for use in a plurality of wellbore housings. Another object of the invention is to provide a universal pipe hanger assembly adapted for use in the wellhead housings of two or more manufactures Another object is the invention is to provide a pipe hanger assembly positioned and designed to be placed in a wellhead housing of a well drilled on the ground in such a way that the Pipe hanger assembly is independent of privately owned details and the dimensions of this wellhead housing Another object of the invention is to provide a method for installing a universal pipe hanger assembly in a mouth housing of the well where there is no knowledge of the surfaces of the terrain in the wellhead housing BREVE DESCRI PION OF THE INVENTION The invention is embodied in a pipe hanger suspension assembly for a oil and oil well preparation system and a method for installing it. The pipe hanger suspension assembly for a submarine well and a ground well includes A housing of the mouth of the pipe hanger well that is tapped in the well housing. The pipe hanger assembly includes a sealing and clamping mechanism that provides sealing and load bearing of the production pipe in a position below this wellhead housing in the row of production covers A sub-assembly of narras between the upper end of the pipe hanger suspension assembly and the lower end of the Christmas tree assembly provides hydraulic functionality and electrical down the perforation and an annular access to the production pipeline The preparation system No. of wells according to the invention is placed and designed to be used with wellhead housings of all manufacturers. The hanger assembly for hanging pipe of a preferred embodiment includes a pipe hanger housing placed in the mouth housing of the well independently of any of the privately owned details of the wellhead housing The preferred method of the suspension assembly for hanging tubing is "universal", this is suitable for use in a plurality of wellhead housings, including wellbore housings of two or more manufacturers. In accordance with the invention, a pipe hanger assembly is installed within a mouth housing of the well where the wellhead housing supports a roof hanger connected to a row of decks that erase the borehole of a well The pipeline hanger assembly is provided with a pipe hanger housing having an outside diameter positioned and designed to fit within the borehole of the wellhead housing. The pipe hanger assembly includes a tubular member and a fastening assembly carried by the hanger housing, both of which are positioned and designed to fit within the housing. the row of covers The housing of the hanger positioned inside the well housing and the tubular member and the fastening assembly positioned within the row of covers until a bottom surface of the hanger housing is positioned a few inches above the upper end of the cover hanger The fastening assembly is activated against the inside of the row of covers As a result the The assembly of the hanger is held vertically by means of the coupling of the fastening assembly of the row of covers in a position below the housing of the hanger. Brief Description of the Drawings The objects, advantages and characteristics of the invention will be more evident with reference to the drawings which are appended and in which similar reference numerals indicate like parts and in which an illustrated embodiment of the invention is shown, in which Figure 1 is a schematic sectional elevation view showing a covered well bore, Wellhead housing and a prevenc stacking Explosion ion ("BOP") connected to the wellhead housing and rows of decks with roof hangers resting on the wellhead housing; Figure 2 is a schematic sectional elevational view showing the suspension assembly for hanging pipe according to a preferred embodiment of the present invention submerged in a well bore and a well housing with a collet operating tool, Figure 2A is an enlarged view of the lower portion of the figure 2, Figure 3 is an enlarged schematic sectional elevational view of a preferred embodiment of the sealing and attaching assembly of the suspension assembly for hanging pipes of Figures 2 and 2A, Figure 4 is a view similar to Figure 2 with the sealing and fixing assembly indicated in the row of covers and a retractable plug placed in the production line, Figure 5 is a view in elevation n schematic sectional showing a preferred embodiment of a subsea tree with an underwater bar connected to the suspension assembly for hanging pipe and the well housing, Figure 6 is a sectional elevation view of an underwater bar connected to the assembly of the Universal hanger according to a preferred embodiment of the present invention, the arrows indicate a flow path of the ring; Figure 7 is a sectional view of the subsea bar taken along lines 7-7 of Figure 6; Figure 8 is a similar view Figure 6 showing passages for chemical injection controls and subsurface safety valve; Figure 9 is an enlarged view of the upper portion of Figure 8; and Figure 10 is a sectional elevation view of a portion of the suspension assembly for hanging pipes according to another embodiment of the invention. Detailed Description of the Invention One embodiment of the invention is described in detail with specific reference to the drawings. This invention relates to the preparation of a well that has been drilled and has a perforated hole lined with a cover. Although the following description and the drawings illustrate the invention embodied in an underwater well, the invention can also be performed in a well above the ground. Referring to Figure 1, a typical perforated well bore B is shown extending from seabed F to a zone Z, which typically communicates with a hydrocarbon fluid reservoir. The wellbore B is shown with a tubular row of cover pipes that are understood from seafloor F to bore B as is known in the art. The row series of tubes starting from the outer row, including a conduit housing 12, a wellbore housing 14, a row of first or outer covers 16 with a hanger 16a, and a row of inner or production covers 18 with an 18a hanger. The well shown in Figure 1 represents a typical well for purposes of illustrating the present invention; however, the invention is not limited to wells with this precise configuration. The figures in the drawings have not been drawn to scale because of the tremendous depths at which the wells are drilled. Still referring to FIG. 1, the upper portion of the conductor housing 12 is preferably above the seabed F. The housing of the wellhead 14 preferably a high pressure housing extends above the driver housing 12. Preferably the upper part of the mouth of the well 14 is located approximately 3 meters above the seabed F. The well mouth housing 14 typically includes an external profile (not shown) to be connected to a connector 20a of a prevention stack. of explosions ("BOP") 20 and an oil field Christmas tree as described below. Typically roof hangers 16a and 18a are supported and fixed in the housing of the mouth of the well 14.

Although not shown, the wellbore housing 14 typically includes several internal profiles, dimensions and details for the support, coupling and sealing of the cover hangers 16a, 18a in the wellbore housing 14. Each The manhole manufacturer has several housings at the wellhead with corresponding roof hangers for each wellhead housing. As a result, the cover hangers 16a, 18a installed in the wellbore housing 14 are typically manufactured by the same company since the wellboats and cover hangers of each manufacturer are different from those of the other manufacturers. Following the placement of the covers as shown in Figure 1, a pipe hanger assembly typically operates in a conventional well. Although not shown, a typical pipe hanger assembly of the prior art (this is a well in which the pipe hanger is supported on the wellbore housing) includes a housing having a row of production pipes which extends from the housing to substantially the production zone Z. A pipe hanger installed in the wellbore housing of Figure 1 rests on one or more backrests 18b on the cover hanger 18a. The weight of the suspended pipe row is supported by the cover hanger 18a. Although the production deck hanger 18a of the prior art is not shown, it includes internal profiles, dimensions and details of support, coupling and sealing of a typical prior art pipe hanger in the cover hanger 18a. Similar to the above, each roof hanger manufacturer has its own private configuration with respect to the coupling and connection to the cab. As a result, in a typical conventional well, the pipe hanger is usually manufactured by the same manufacturer of roof hangers as it is also typically the wellhead housing manufacturer. Referring still to Fig. 1, the BOP stack 20 is shown with a connector 20a, a vertical bore 20b, a plurality of rams 20r, a throttling line 20c and a line of 20k closure There are several types of BOP 20 stacking configurations that are suitable for use with the wellbore housing 14 The BOP stacking bore 20b is shown with a diameter approximately the diameter of the borehole housing 14 However the diameter of the BOP hole only needs to have a diameter that is equal to or slightly larger than the diameter of any tool or component of the well that passes through the BOP 20 stack for a desired installation or repair operation The term "repair" is used to designate one or more of a variety of remedy operations in a producing well for the purpose of restoring or increase production Although not necessary, it may be desirable to determine the distance between the upper end 18c of the production cover hanger 18a and the upper face 14a of the wellbore housing 14 The depth of the upper end 18c is typically determined from the known depth (dimension) of the BOP stack 20. A typical well mouth housing 14 has approximately 60 to 90 cm between the upper layer of the housing 14a and the upper end 18 c of the production deck hanger 18a. Preferably, the length D between the top of a plurality of BOP rams 20r, for example the ram 20r 'in Figure 1, and an inner face 20f of the BOP wellbore connector 20a is measured and known. This length D is referred to as the dimension of spacing for the reasons that will be explained later. The inner face 20f of the wellhead connector 20a typically is adjacent to or embedded in the upper face 14a of the wellbore housing 14 when the BOP stack is mounted in the wellbore housing 14. A suspension assembly for hanging universal pipe 10 according to a preferred embodiment of the present invention is shown in Figures 2 and 2A. The suspension assembly for hanging pipe 10 includes a row of production pipes 22 connected to a housing of the pipe hanger 24. The production pipe 22 defines a production pipe bore 22a extending axially through the pipe 22. The housing of the pipe hanger 24 includes a production bore 24a in fluid communication with the bore of the production pipe 22a. The production perforation 24a extends substantially vertically through the housing of the pipe hanger 24 As previously described, the row of production pipes 22 typically extends down to the production zone Z The row of production pipes 22 may include a subsurface safety valve 26 at any desired depth within the borehole of the well B The housing of the hook pipe 24 also preferably includes an annular passage 24b extending through the housing of the pipe hanger 24 In the preferred embodiment an isolation valve 28 of the ring is placed and designed to seal and close the annular passage 24b Referring to Figure 2A, the suspension assembly for hanging pipe 10 preferably includes a lower pipe hanger assembly 32 at a lower end of the pipe hanger housing 24 The lower assembly 32 preferably includes a sealing and fastening assembly 34 The lower assembly 32 is preferably a member tubular having a passage perforation The tubular member 32 may be a pipe or a mandrel having a bore through it. The lower assembly of the pipe hanger 32 preferably extends around the row of production pipe 22 with a production ring 32 to be defined between them. of production 22 preferably has a length that is better and extends approximately to the production zone Z, the lower pipe hanger assembly 32 preferably has a length less than the length of the pipeline 22 Preferably the length of the lower assembly 32 is less than 50% of the length of the pipeline 22, more preferably less than 25% of the length of the pipeline 22, and more preferably less than 15% of the length of the pipeline 22. the length of the row of pipe 22 depends on the depth of the production zone Z, the length of the lower assembly 32 in relation to the row of pipe 2 2 varies between wells. Preferably, the lower assembly 32 has a length of 30 cm to 450 m, more preferably in the range of 30 cm to 90 m, and more preferably 1.5 to 30 m. Preferably the sealing and fastening assembly 34 is supported by the lower pipe hanger assembly 32. Preferably the sealing and fastening assembly 34 is positioned near the lower end of the lower pipe hanger assembly 32. An enlarged view of the sealing assembly / fastening 34 is shown in Figure 3. Preferably, the sealing / fixing assembly 34 includes a tubular portion of enlarged outside diameter 36 that is slightly smaller than the inside diameter of the production cover 18. In the preferred embodiment the sealing assembly / fastener 34 includes a sealing apparatus 38 and a locking apparatus for preventing movement or set-up of fastener 40. The sealing apparatus 38 and the fastening apparatus 40 may be contained within a unitary assembly or may be separate assemblies. In the wells having a subsurface safety valve 26, the sealing apparatus 38 is placed in the row of covers 18 above the sub-surface safety valve 26 The fixing apparatus 40 is also located above the sub-surface safety valve In the preferred embodiment the fixing apparatus 40 includes elements or inserts, which may or may not be metallic, adapted to be coupled to the inside of the production cover 18. When coupled the fixing apparatus 40 engages the interior of the cover 18 and "fixed "or prevents vertical movement of the pipe hanger suspension assembly 10 in relation to the production cover 18 The sealing apparatus 38 includes a sealing element, which may be made of an elastomeric material or other material (including compounds) a seal metal adapted to form an annular seal between the cover 18 and the tubular portion 36, as for example by means of compression The ap sealing device 38 of the fixing apparatus 40 can be activated independently or activated together Preferably, activation and deactivation of the fixing apparatus 40 and the sealing apparatus 38 is hydraulically controlled by means of ports 42a and 42b as explained below Activation or deactivation can also be an electronic, mechanical or electrical activation or deactivation As shown in Figure 2A, preferably one or more hydraulic control lines 44 extend through the housing of the pipe hanger 24 to provide hydraulic control to devices below the pipe strainer housing 24 For example, the hydraulic control lines may need activating or deactivating the sealing apparatus 38 and the fixing apparatus 40 A hydraulic control line 44a may also be required to extend to the subsurface safety valve 26 Preferably those hydraulic control lines 44 extend in the production ring 32a between the lower limb 32 and the row of tubing pipes Production Line 22 as shown in Figure 2A The hydraulic control line of the subsurface safety valve 44a is preferably in a ring 22b between the row of production covers 18 and the row of production line 22 below the end bottom of the sealing and fixing assembly 34 as shown in Figure 2A Referring again to Figures 2 and 2A, the pipe hanger suspension assembly 10 is preferably immersed in the wellbore B and the housing of the well mouth 14 with a pipe hanger positioning tool 30 The pipe hanger positioning tool 30 is adapted to be fixed to the upper end of the pipe hanger housing 24 The pipe hanger fitting tool 30 also preferably includes an access hole to the ring 30b communicating with the annular passage of the pipe hanger 24b and l Hydraulic lines 30c communicate with the hydraulic lines 44 of the pipe hanger housing 24 The pipe hanger positioning tool 30 preferably includes lines for hydraulic and chemical injection at the bottom of the bore (not shown) to communicate with similar lines in the housing of the pipe hanger 24 The pipe hanger positioning tool 30 preferably includes an upper mandrel 46 having an adjusting nut 48 for spacing mandrel or a similar mechanism in an upper portion Preferably the nut 48 or the The mandrel 46 and the nut 48 can be adjusted in length for the reasons explained below. As indicated above with reference to Figure 1, the dimension D of spacing is the measured and known distance between the rams 20r 'of the upper part of BOP and the internal face 20f of the wellhead connector 20a of the stacking BOP 20 This distance D of spacing is constant for stacking BOP 20 and is preferably measured before submerging the stacking BOP 20 in the water As shown in Fig. 1, the spacing distance D also corresponds to the distance between the top of the rams 20r BOP and the upper face 14a of the well housing 14 when the BOP stack 20 is connected to the wellbore housing 14 Referring to Figure 2, the adjusting nut 48 and the upper mandrel 46 of the Pipe hanger placement tool 30 are preferably "adjusted" before starting "operation" operations or installation of the hanger assembly of the pipe hanger 10 The mandrel 46 and the adjusting nut 48 are adjusted in a way that the housing of the pipe hanger pipe hanger 24 is received at the desired elevation in the wellbore housing 14 when the adjusting nut 28 makes contact with the BOP 20r 'rams as shown in FIG. Figure 2. The adjusting nut 48 in the aforementioned embodiment has an outer diameter greater than the outer diameter of the upper mandrel 46. As the suspension assembly of the pipe hanger 10 approaches the desired depth, the larger diameter adjusting nut 48"expands" on the rams 20r 'which are closed to a diameter smaller than the diameter of the adjusting nut 48 but larger than the diameter of the mandrel. Referring to Figures 2 and 2A, the preferred installation operation of the pipe hanger suspension assembly 10 includes immersion through an elevator (not shown) and stacking BOP 20, of the production pipeline 22, the sealing and fixing assembly 34, the lower tubular pipe hanger member 32, and the pipe hanger housing 24 with the pipe hanger positioning tool 30 and a row of installation pipes 50, preferably the drill pipe. The ram 20r 'of the BOP is partially closed after the housing of the pipe hanger 24 passes through the lower portions of the pipe hanger positioning tool 30. With the ram 20r' closed or partially closed against the upper mandrel 46, the dipping operation continues until the adjusting nut 48 makes contact with the ram 20r 'and stops the pipe hanger placement tool 30 at a predetermined distance. The predetermined distance appropriately places the pipe hanger housing 24 at a prescribed height relative to the wellbore housing 14 In the preferred embodiment of the pipe hanger 24 within the wellbore housing 14 For example the predetermined distance can locate the upper end of the pipe hanger housing 24 to 254 or 5 cm above or below the upper surface of the well head housing 14 When the adjusting nut 48 contacts the ram 20r ', the The lower tubular member of the pipe hanger 32 and the sealing and fastening assembly 34 are held vertically in position in the production casing body 18 Next, if desired, a well preparation fluid is circulated in the well. BOP 20r 'rams are sealed around the mandrel 46 The well preparation fluid is pumped from the equipment to the dead line 20k of the BOP stack 20 and towards the annular access perforation of the pipe hanger fitting tool 30b, the annular passage of the pipe hanger 24b, the production ring of the lower member 32a and the production pipe ring 22b and returns to the surface to the perforation 22a, the production perforation of the pipe hanger 24a, the positioning tool production perforation 30a and the perforation 50a of the installation pipeline 50 Alternatively the preparation fluid can be pumped downwards from perforation of the installation pipeline 50a, the production hole of the laying tool 30a, the pipe hanger and the perforations of the production row 24a and 22a and around the lower production packing 52 and the ring perforations 22b, 32a to the passage of the pipe hanger ring 24b, the drilling of the ring of the tool of c Placement 30 b and to the surface through the choke or the dead lines of the BOP 20c, 20k. The preparation fluid is circulated in the well before the lower gasket 52 is placed to form a seal between the production casing 18 and the production line 22 at the lower end of the well. It is to be understood that the above circulations of the preparation fluid can be conducted either before or after the sealing apparatus 38 is placed. Then the sealing and fixing assembly 34 is activated, preferably hydraulically, by means of the hydraulic control lines for pushing the fixing apparatus 40 (see figure 3) into a strong coupling with the production cover 18. The coupled fixing apparatus 40 prevents or substantially prevents relative vertical movement between the lower tubular member 32 and the production cover 18. After activation of the sealing apparatus 38, the sealing apparatus 38 forms a fluid-tight seal or algae between the lower tubular member 32 and the production cover 18. The sealing and fixing assembly 34 may include a row of inserts having metallic elements that tighten the production cover 18. An elastomeric or other seal is preferably compressed by the row of inserts to form a fluid-tight seal. Preferably, the seal and fastening assembly 23 is a modified packing assembly of the type conventionally used in wells to isolate the zones of production etc. Such a representative packaging assembly technology is generally described in US Patents 6,769,491, 5,988,276, 5,271,468, and 4,296,806, and marketed by such companies as Halliburton Company, Baker Hughes Inc, and Weatherford / Lamb, Inc The applicant fully incorporates reference US patents 6,769,491, 5,988,276, 5,271,468, and 4,296,806 In this preferred embodiment of the invention, the sealing and fixing assembly 34 coupled with the production cover 18 provides the sealing and loading support of the suspension assembly for hanging universal pipe 10 in the well. The sealing and fixing assembly 34 provides support for vertical load to support the suspension assembly for hanging universal pipe 10 This sealing, fixing and suspension of the pipe hanging assembly 10 is achieved and installed without having to know any critical and private dimension in the wellbore housing 14 and / or Furthermore, in this preferred embodiment, the housing of the pipe hanger 24 does not need, and preferably does not close or seal with the well housing 14 or the cover hangers 16a, 18a When the assembly of the cover hanger 16a, 18a sealing and fixing 34 is activated and placed, the seal can be tested under pressure from above or below the sealing and fixed assembly 34 The seal can be pressure tested from above by closing the annular isolation valve 28 in the pipe hanger housing 24 and with the rams 20r 'sealed around the upper mandrel 46, pumping a fluid from the surface through from the dead line 20k downwards by passing the open ram 20r ", around the outside of the tool for positioning the pipe hanger 30 inside the bore BOP 20b, in the annular area between the wellbore housing 14 and the housing of the pipe hanger 24, and the annular area between the production cover 18 and the lower member 32 Preferably, after the sealing and fixing assembly 34 has been successfully tested, the lower gasket 52 is placed to seal the ring of the production line 22b near the bottom of the production pipe body 22 The lower packing 52 can be tested from below by opening the ring isolation valve 28 and closing the s rams 20r 'and lower rams 20r "around the pipe hanger positioning tool 30. To perform the pressure test, pressure is formed by pumping fluid down the bore of the installation pipeline 50a, the production drilling of the pipe hanger 30a laying tool, the production drilling of the pipe hanger 24a and the drilling of production pipe 22a below the packing 52 If during the test the packing 52 leaks fluid, the pressure and the fluid are taken through the pipe ring 22b, the valve of the ring 28 and the passage of the ring 24b, between the rams 20r 'and 20r "", and up to the dead line 20k With reference to figure 4, preferably a member of closure or plug 54 is submerged (for example through a wire) down the perforation of the row of installation pipe 50a and the production perforation of the pipe hanger 30a and is placed in the perforation 22a, of the production pipe 22 The closure member 54 is preferably a recoverable plug, and more preferably a plug recoverable by the wire In the preferred embodiment the closure member 54 is placed in the production line 22 at a depth of or below the sealing and fixing assembly 34 Alternatively, the closure member 54 can be placed in the production line 22 at or above the sealing assembly and fastening 34, or in the production perforation of the pipe hanger housing 24a After placing and testing the sealing and fixing assembly 34, the lower gasket 52 and the closing member 54, and with the sub-surface safety valve 26 and the ring-insulated valve 28 closed, the pipe hanger 30 placement tool is disconnected from the pipe hanger housing 24 and recovered aa the surface The BOP stack 20 is then removed from the well bore housing 14 Then the shaft assembly 60 is reduced from the upper surface of the water by means of a row of tubes 50, preferably a drilling line, and a tree preparation tool 56 as shown in Figure 5. Tree assembly 60 is shown with a production bore 62, master valve 64 and production flap valves 64 and production access valve 68. The shaft assembly 60 also includes a ring bore 70 and a ring master valve 72. The shaft assembly 60 has a shaft assembly 60a adapted to seal and connect with the bore of the well bore 14. The shaft assembly The preferred one shown in Figure 5 is generally called a mono perforation tree, however the invention is applicable not only to mono-drilling trees but also to trees with two perforations and test trees. Additionally, although the invention is particularly suitable for underwater application, it can also be applied to surface wells. Figure 5 shows the row of tubes 50 with a shaft-to-pipe hanger bar assembly 74 promoting various interconnections between the shaft assembly 60 and the hanger suspension assembly for universal pipe 10. The bar sub assembly of hanger 74 is preferably installed at the lower end of the shaft assembly 60 prior to submerging the shaft assembly 60 in the well mouth housing 14. The hanger bar submarine assembly 74 includes a bar sub assembly hanger 74a in a sealing coupling with the production bore of the shaft 62 and forms a sealed coupling with the pipe hanger housing 24a after the installation of the shaft assembly 60 on the wellbore housing 14. Similarly the assembly of Hanger bar submarine 74 also includes a 74b in sealing engagement with ring bore 70. The 74b forms a coupling sealed with the pipe hanger housing 24b after installation of the shaft assembly 60. One or more 74c are preferably in the hanger bar sub assembly 74 and provide connection to the hydraulic lines pipe hanger housing 24c, 44a and 44b (Figure 9) for the control of the equipment and the devices of the lower holes of the borehole. Additionally other doors or lines such as the chemical injection line may be provided in a hanger bar sub assembly 74. The use of the term "lines" in reference to hydraulic and chemical injection is intended to include pipes or perforations or ports in solid members, such as for example the pipe hanger housing 24 or the hanger bar submarine assembly 74. Figure 6 shows an embodiment of the hanger bar submarine assembly 74 connected to the pipe hanger housing 24. A part of the insulated valves of the ring insulated ring valve 28 are shown in the pipe hanger housing 24. The right side of figure 6 shows the insulated valve of the ring 28 in the closed position to close the hanger housing of 24b pipe, and the left side shows the left valve isolated from the ring 28 in the open position to open the pipe hanger housing 24b Preferably the left and right isolation valves isolated from the ring 28 valve assume the same position and are operated together As shown in Figures 6 and 7, the hanger bar sub assembly 74 preferably includes a pair of ring bores 74b in order to provide an annular flow area of sufficient cross section, typically the combined area is equivalent to cross-sectional area of a perforation with a diameter of 38 to 5 cm The lower ends of the annular perforations 74b are in fluid communication with each other by means of a notch or peripheral gallery 74b 'Similarly the upper ends of the perforations of the ring 74b they are in fluid communication with each other by means of a notch or peripheral gallery 74b "Al Alternatively or additionally, the shaft assembly 60 may also include a peripheral notch to provide fluid communication to the ring bore 70 and the ring master valve 72 (FIG. 5) The annular flow path P from below the seal assembly and fastening 34 to the shaft assembly 60 with the ring isolating valve 28 open as indicated by the arrows in figure 6 Figures 8 and 9 show passages for the controls of the subsurface or injection and hydraulic safety valve (SSSV The sectional views of FIGS. 8 and 9 have been rotated angularly in relation to the sectional view of FIG. 6. As shown in FIG. 9, the hanger bar submarine assembly 74 includes separate passages for the hydraulic controls 74c. for the subsurface safety valve 26 and the chemical injection 74d. Galleries similar to the ones described above are provided for each one. The stamps are preferably provided between each of the galleries to maintain segregation between the different passages. In the preferred embodiment, the widths (measured along the longitudinal axis of the hanger bar submarine assembly 74) of the indentations or peripheral grooves are larger than the respective diameters of the perforations 74b, 74c and 74d to allow communication between the respective passages in a range of vertical separation variations between the pipe hanger housing 24 and the shaft assembly 60. For example, the vertical elevation of the pipe hanger housing 24 in relation to the well housing is predetermined. 14a and is fixed by means of the upper mandrel 46 of the positioning tool and the adjusting nut 48 as described above. The shaft assembly 60 is installed in the wellhead housing 14. The hanger bar submarine assembly 74 provides the fluids and controls the bond between the pipe hanger housing 24 and shaft assembly 60. Since the Hanger bar submarine assembly 74 is preferably attached to the shaft assembly 60 prior to submerging the assembly, it is important that all fluid / control connections between the pipe hanger housing 24 and the hanger bar submarine assembly 74 they automatically coincide when the shaft assembly 60 is fixed to the wellbore housing 14. The enlarged widths of the peripheral grooves or grooves described above allow the desired coupling over a range of distances between the shaft assembly 60 and the hanger housing of pipe 24. Preferably, the galleries allow the hanger bar sub assembly 74 to properly engage and communicate through of a vertical range of approximately 2.54 to 7.6 cm. The galleries, as described with respect to the preferred embodiment, allow the shaft assembly 60, the hanger bar submarine assembly 74 and the housing pipe hanger 24 for communicating and coupling with each other regardless of the angular orientation of the separated components. This "unoriented" feature of the apparatus simplifies the preparation and installation of underwater components. The invention can also be useful with oriented submarine components. With the shaft assembly 60 already fixed and tested, the closure member 54 (see figure 4) is recovered to the surface through the perforations of the production line 22., the pipe hanger housing 24, the hanger bar submarine assembly 74, the Christmas tree assembly 60 tree assembly, the tree preparation tool 56 and the row of tubes 50. Figure 10 shows a slight modification to the embodiment of the present invention shown and described above. In Figure 10, a stopping apparatus 80 is connected to the lower end of the pipe hanger housing 24. The stopping apparatus 80 is preferably an annular member having an upper annular portion 82 and a lower annular portion 84, each annular portion. upper annular portion 82, lower annular portion 84 includes a threaded end 82a, 84a, respectively, adapted to mate with each other. Preferably the lower annular portion 84 has a lower level end 84b corresponding to the backrest 18b in the production cover hanger 18a. Preferably the length of the stopping apparatus 80 can be adjusted by means of a threaded coupling of the annular portions annular upper portion 82 and lower annular portion 84 before installing the hanger suspension assembly for universal pipe 10. Preferably the length of the arresting apparatus 80 is such that the lower level end 84b contacts the back of the cover hanger 18b and transfers the weight of the universal pipe hanger suspension assembly 10 to the production deck hanger 18a. Thus, if the dimensions and placement of the production cover hanger 18a are known in relation to the wellbore housing 14, the stopping apparatus 80 can be employed to provide a lower stop when the hanger hanger assembly is immersed and installed. for universal tubing 10. In addition, the stopping apparatus 80 can be used in place of the adjusting nut 48 of Fig. 2. The stopping apparatus 80 does not provide a seal, and does not provide upward force resistance, seal and seal. Resistance to upward forces are still provided by means of the sealing and clamping assembly 34. Based on the above description of the invention, a "universal" equipment of components for an underwater well is obtained. For example, referring again to Figure 1, a common size of the wellbore housing 14 has an internal diameter (ID) of 47.3 to 47.65 cm, depending on the manufacturer. The deck strainers 16a, production deck hanger 18a installed in these well housings housing the well mouth 14 are typically below 61 to 91.4 cm below the bottom face housing of the well bore 14a of the well housing 14. Thus the pipe hanger housing 24 (FIGS. 2 2 a) of the hanger suspension assembly for universal universal pipe 10 can occupy a round cylinder space of approximately 47 cm in diameter and 61 cm in diameter. height in the upper portion of the wellhead housing 14. Since the pipe hanger housing 24 does not include a reversible locking mechanism for fixing the upper portion of the wellbore housing 14 (typical of pipe hangers) conventional), the diameter of 47 cm can be substantially completely used by the pipe hanger housing 24. This larger diameter of the mouth housing of the Well 14 is advantageous because the "useful space" for the different perforations and passages required to pass through the pipe hanger housing is substantially greater than in conventional pipe hangers. Preferably, the length of the hanger bar submarine assembly 74 (see Figures 5,6) is the same regardless of the type of housing of the well head 14 and the cover hangers 16, production deck hanger 18a in which Tree assembly 60 is installed. This is achieved due to the use of the D dimension of spacing to place substantially uniformly the pipe hanger housing hanger 24 in relation to the upper part of the well housing 14 regardless of the type of wellhead housing. This provides simplicity in the design between wells and allows a "universal" hanger bar sub assembly 74 used with the preferred shaft assembly 60. Certainly the separate bar assemblies are required for the production tubes of different sizes. So it should be understood that the hanger suspension assembly for universal pipe 10, the hanger bar submarine assembly 74 and the shaft assembly 60 are capable of being installed in different hanger bar sub assembly 74, and are to a large extent "universal" and "shelf" items, eliminating significant costs of engineering and fabrication that is incurred when the manufacturer's tree assembly A is installed in a well-hole housing of the manufacturer B. The present invention also removes the sludge from the pipe reel (connector to the wellhead and the wellhead transfer housing) mounted on the manhole housing of the manufacturer B to carry the pipe hanger of the manufacturer A. In the preferred embodiment of the present invention, the hanger suspension assembly for universal pipe 10 , the hanger bar submarine assembly 74 and the shaft assembly 60 do not require angular orientation. This feature significantly simplifies the installation procedure. However, the invention is not limited to non-orientation arrangements and can also be used with components that require orientation with each other. Techniques for orienting a tree assembly to a pipe hanger are well known in the art. One type of suitable orientation technique is described in U.S. Patent 5, 544,707 and incorporated by reference. Another orientation technique in which to modify the BOP 20 stack with a bolt to orient the components as they pass through the BOP 20 stack. The orientation of the components adds cost and complexity to the subsea installation process. The present invention includes a hanger suspension assembly for universal pipe 10 for an oil and gas well and a method for installing it. The universal pipe hanger suspension assembly 10 includes a pipe hanger housing 24 which is placed in the well mouth housing 14. The hanger suspension assembly for universal pipe 10 includes a sealing and fixing assembly 34 capable of providing a seal and load bearing to the production pipe 22 in the cover row 18. A hanger bar sub assembly 74 connected to the upper end of the hanger suspension assembly for universal pipe 10 and the lower end of the Christmas tree assembly row of tubes 50 provides a hydraulic and electrical functionality in the hole and access to the ring for the production pipe 22. Using the BOP 20 stack for spacing and the placement of the hanger assembly for universal pipe 10 eliminates the need for exact dimensions of wellbore housing 14 for spacing and also eliminates the need for of internal stacking dimensions to serve as interface with the underwater tree assembly tree assembly 60 to the hanger bar submarine assembly 74. Preferably the spacing of the hanger suspension assembly for universal pipe 10 is achieved by means of a nut adjustable spacing nut 48 on the upper part of the upper mandrel 46 of the preparation tool 30 in the BOP stack 20. Alternatively the predetermined elevation of the spacing of the hanger suspension assembly for universal pipe 10 can be achieved by using a stopping apparatus 80, preferably adjusting that it is supported on the 18. Using the pipe packing technology to fix the lift of the lower member to a predetermined elevation through the BOP 20 stack and not in the wellbore housing 14 allows the interface of underwater tree in any industrial wellhead system El or di used in the system eliminates the use of BOP 20 stacking or wellbore for orientation The apparatus and methods described above are advantageous because they are suitable for use in wellbore housings. pit mouth housing 14 regardless of privately owned details pertaining to the housing The universal pipe hanger suspension assembly 10 of the preferred embodiment of the present invention eliminates the need to use wellhead housing or the backs of support of the cover hanger for fixing and sealing the pipe hanger housing 24 in its position The universal hanger hanger assembly 10 of the preferred embodiment of the present invention also eliminates the need to seal the pipe hanger housing 24 to the wellbore housing 14 The preferred modality eliminates those requirements when sealing, anchoring and fixing the sealing and fixing assembly 34 in the row of production covers 18 suspended by the cover hanger 18a in the wellhead housing or the system The present invention provides simplicity and reduced costs when preparing an underwater well The pipe hanger housing 24 is preferably not fixed, sealed with or held by the well housing of the well 14 Thus the well housing of the well 14 no longer needs the details, profiles, etc. specifically related to the hanger housing of the well. pipe 24 In addition internal profiles, etc. are not required in the production of the row of production covers 18 to cooperate with the sealing and fixing assembly 34 This provides flexibility to install the pipe hanger housing 24 at the desired height to ensure that proper separation is bypassed by the hanger bar submarine assembly 74 as it is submerged n the shaft assembly 60 Even the final elevation of the sealing and fastening assembly 34 in the row 18 can be varied to a substantial distance by changing the length of the lower member 32 Depending on several factors related to the well, the invention can be made in a plurality of sealing and fastening assemblies sealing and fastening assembly 34 if deemed desirable The invention provides a substantial amount of additional cross-sectional area available for use in the pipe hanger housing 24 which represents a tremendous benefit. pipe 24 may have a diameter that approximates the internal diameter of the wellbore housing 14 The additional area allows ample space for a larger production bore or multiple production boreholes, rings and other ports and controls, etc. that are required or want in a hanger housing for pipeline presents a description of some of the benefits derived from the present embodiment of the suspension assembly for pipe hanger of the present invention: For the customer / user, the wellhead becomes invisible until its preparation. This provides the user with savings in two ways: in engineering and in the accessories interface. Engineering is reduced by determining pipe hanger interfaces such as tolerances and dimensions and compatibility issues. Currently this includes problems in underwater and surface preparations. o Engineering: 1. The time spent on interface engineering is important.

Users spend approximately one week-man on interface engineering for their preparation. This generally requires 2 engineers at a cost of $ 200 per hour giving a total of $ 16,000 per manufacturing interface. The cost for two wells is $ 32,000 dollars and for ten wells is $ 320,000. 2. A manufacturer that proposes privately owned drawings to work with the interfaces, $ 10,000 for each drawing. Typically, a minimum of two drawings is required for a total of $ 20,000. This is charged per well even when the wells are identical and the drawings are copied. If a user has two wells, the charge is $ 40,000 but if he has ten wells the charge is $ 200,000. Manhole manufacturers charge those prices for access to their private information that serves as a monetary incentive for the user to buy the pipe hanger and the Christmas tree from the manhole manufacturer instead of looking for the most economical solution / commercial to prepare your subsea well This totals between $ 36,000 per well and $ 520,000 per ten wells Manufacturing interfaces and accessories To prepare a well using conventional pipe suspension methods within a wellhead where the wellhead is A different manufacturer than the tree, the suspension system for conventional pipe from the tree manufacturer is not compatible with the wellhead Therefore, the user's preparation becomes useless. This means that the preparation with a cost of $ 1,300,000 to $ 2,000,000 is useless and must buy another tree which means costs of time, planning and accessories If the situation of the well allows In the technical deficit, a transfer spool can be used. However, the same problems expressed above with respect to engineering are presented. The transfer spool is mounted on the well housing and is designed to accommodate the pipe hanger of the well. tree manufacturer In addition to the additional engineering cost, the accessory cost for the transfer is approximately $ 500,000 with approximately another $ 1,500,000 to $ 7,000.00 in installation extension costs. This extension cost depends on the depth of the water and the geographical location. Horizontal trees have been used to help in this regard. In a horizontal shaft the pipe hanger housing is supported and sealed on the shaft (spool) contrary to the wellbore housing. However, horizontal trees have a price and require an engineering interface. Typically, the horizontal tree cost is approximately $ 1,000,000 higher and approximately $ 1,200,000 of the cost per ancillary rights per well is also required. In the preferred embodiment of the pipe hanger suspension assembly of the present invention, the fixing and sealing device is located in the perforation of the cover. This provides the advantages in the following areas: cost and flexibility. The cost is reduced for the user because a multi-perforation production pipe system can be used. This allows subsea rods to be used in the tree to perform multiple boreholes (production, ring and hydraulic ports) through underwater rod mandrels for the tree interface, thus saving approximately $ 500.00 to $ 7,000,000 in the tree and preparation. invention including 10, is not limited to the preferred embodiments described herein. The 10 is not limited to the pipe hanger housing received in the wellhead housing. Rather, the 10 can also be used in wells in which the pipe hanger is received in spools of pipe or horizontal trees mounted in the wellhead housing. It is to be understood that the sealing apparatus 38 and optionally the fixing apparatus 40, will still be placed in the row of covers 18. Preferred embodiments of the universal suspension assembly for hanging pipe and well preparation system and methods for installing them in accordance with the present invention have been described. However, the invention should not be unduly limited to what has been described above for illustrative purposes only. Various modifications and alterations of the invention will be apparent to those skilled in the art without departing from the true scope of the invention.

Claims (28)

1. RESVINDIATIONS 1. A pipe hanger assembly (10) for use in a well having a well housing (14) and a row of decks (18) extending down a hole in the well (B) , the pipe hanger assembly comprises: a pipe hanger housing (24) having a production hole (24a) passing through it; a row of production pipes (22) connected to the hanger housing, the row of production pipes has a production hole (22a) in fluid communication with the production hole of the pipe hanger housing (24a); a lower assembly at a lower end of the housing of the pipe hanger, the lower assembly includes a lower member (32), the sealing apparatus (38) and a blocking apparatus for the prevention of movement (40), the sealing apparatus (38) ) is positioned and designed to form a fluid-tight seal between the lower assembly and the row of production covers (18) and the locking device to prevent movement (40) placed and designed to fix the lower assembly to the row of covers (18).
2. 2. The pipe hanger assembly of claim 1, wherein the sealing apparatus (38) is arranged and designed to form the fluid tight seal between the lower member (32) and the row of production covers (18).
3. 3. The pipe hanger assembly of claim 1, wherein the locking apparatus for preventing movement (38) is arranged and designed to fix the lower member to the row of covers. The pipe hanger assembly of claim 1, wherein the pipe hanger housing (24) is adapted to be located independently in the wellbore housing (14). The pipe hanger assembly of claim 1, wherein the pipe hanger housing (24) is adapted to be held vertically only by means of the bottom assembly. 6. The pipe hanger assembly of claim 5, wherein the vertical support of the pipe hanger housing is provided by means of the coupling of the lock apparatus for preventing movement (40) with the row of covers (18). ). The pipe hanger assembly of claim 1, wherein the lower assembly has a bore through it and the row of production pipe (22) extends through the bore of the lower assembly. The pipe hanger assembly of claim 1, wherein the row of production pipe extends through the bore of the lower assembly, def a ring in the pipe of the lower assembly. The pipe hanger assembly of claim 8, wherein the pipe hanger housing includes a ring passage in fluid communication with the pipe ring of the lower assembly (32a). The pipe hanger assembly of claim 1, wherein the row of production pipe has a length of pipeland the lower assembly has a lower length of assembly, and the length of the lower assembly is smaller than the length of the pipel 50% of the length of the pipel 11. 18. A well preparation system comprising: a wellhead housing (14); a row of covers (18) received in the wellhead housing and extending down the wellbore (B); a pipe hanger assembly (10) including a hanger housing and pipe (24), a lower assembly (32) carried by the pipe hanger housing and a row of dependent pipe (22) connected to the hanger housing of pipe, the lower assembly (32) comprises: a sealing apparatus (38) attached to the lower assembly (32); wherein a portion of the row of pipe (22) extends through the lower assembly (32) and the sealing apparatus (38) is adapted to form a fluid and gas tight seal between the row of covers (18) and the lower assembly (32). 12. The well preparation system of claim 11, in which the sealing apparatus (38) can be activated from the unsealed condition to the sealed condition and from the sealed condition to the unsealed condition. The well preparation system of claim 11, further comprising a motion prevention blocking apparatus (40) adapted to secure the lower assembly (32) to the row of covers (18). The well preparation system of claim 13, wherein the blocking apparatus for prevention of movement has an unlocked and blocked condition, the blocking apparatus for prevention of movement can be activated from a non-blocked condition to a blocked condition and from a blocked condition to an unlocked condition. The well preparation system of claim 14, wherein the housing of the pipe hanger (24) is adapted to be held vertically only by means of the lower assembly (32). The well preparation system of claim 15, wherein the vertical support of the pipe hanger housing (24) is provided by means of the coupling of the movement prevention blocking apparatus (40) with the row of covers (18) The well preparation system of claim 11, further comprising: a cover hanger attached (18a) to the row of covers (18); and a stopping apparatus (80) attached to the pipe hanger housing (24), the stopping apparatus cooperates with the cover hanger (18a) to limit downward movement of the pipe hanger housing. 18. The well preparation system of claim 17, wherein the stopping apparatus can be adjusted in length. The well preparation system of claim 11, further comprising: the pipe hanger housing (24) has a production bore (24a) and a ring bore (24b); the system further comprises, a shaft assembly (60) having a production bore (62) and a ring bore (70), the shaft assembly being mounted in the wellhead housing; and a subsea bar assembly (74) having a first end connected to the shaft assembly (60) and a second end connected to the pipe hanger housing (24), the subsea bar assembly (74) having a bore production (74a) that provides fluid communication between the production perforations (62, 24a) of the shaft assembly (60) and the pipe hanger housing (24), the subsea bar assembly (74) has a ring bore (74b) which provides a fluid communication between the ring bores (70, 24b) of the shaft assembly (60) and the pipe hanger housing (24). 20. The well preparation system of claim 19, wherein the pipe hanger housing (24) is positioned and designed for a range of vertical elevations relative to the wellbore housing (14). The well preparation system of claim 19, wherein the portion of the cover row (22) extends through the lower assembly (32) extends through a perforation in the lower member (32) and defines a pipe ring of the lower assembly (32a), the pipe ring of the lower assembly (32a) is in fluid communication with the bore of the ring (24b) of the pipe hanger housing (14). The well preparation system of claim 19, wherein the row of pipe (22) has a length of pipeline and the lower assembly (32) has a length of lower assembly and the length of the lower assembly is less than 25% of the length of row of pipe. 23. A well preparation system comprising: a wellhead housing (14); a row of covers (18) received in the wellhead housing and extending down the wellbore (B); a pipe hanger assembly (10) including a pipe hanger housing (24), a lower assembly (32) and a row of dependent pipe (22) connected to the pipe hanger housing, the lower assembly (32) includes an apparatus of a locking apparatus (40) to prevent movement attached to the lower member (32); in which a portion of the pipe row (32) extends through the lower assembly (32) and the blocking apparatus to prevent movement (44) is adapted to vertically fix the lower assembly (32) to the row of covers (18). The well preparation system of claim 23, wherein the motion prevention blocking apparatus (40) includes an activation arrangement for locking and unlocking the infeed assembly (43) to and from the row of covers (18) 25. The well preparation system of claim 23, wherein the housing of the pipe hanger (14) is adapted to be held vertically only by means of the lower assembly. 26. The well preparation system of claim 25, wherein the housing of the pipe hanger (14) is held vertically to engage the locking apparatus to prevent movement (40) with the row of covers (18). 27. A method for installing a pipe hanger assembly (10) in a wellhead housing (14) wherein the wellhead housing (14) supports a roof hanger (18a) connected to a row of covers (18) that line a well bore (B), and wherein the wellhead housing (14) has an upper annular back (14a) spaced above an upper end (18c) of the housing hanger (18a) , the method comprises the steps of installing a stack (20) to prevent the explosion (BOP) in the upper part of the wellhead housing (14), the BOP stack (20) includes a ram (20r '), the BOP stack has a through bore greater than or equal to a bore through the mouth housing (14), provide a pipe hanger positioning tool (30) having upper and lower ends and an adjusting nut (48) positioned on a mandrel (46) at the upper end, provide the hanger assembly pipe (10) with a pipe hanger housing (24) having an outer diameter positioned and designed to fit within the borehole of the wellhead housing (14) and having a lower tubular member (22) and the assembly sealing and fixing (34) carried by the pipe hanger housing (24) and placed and designed to fit within the cover row (18), fix the lower end of the preparation tool (30) to the hanger assembly of pipe (1 0), adjust the adjusting nut (48) on the mandrel (46) in such a way that the distance between the bottom of the adjusting nut (48) and the bottom of the pipe housing (24) is approximately equal to the distance between an upper surface of the ram (20r ') and a few centimeters of the upper end (18c) of the cover hanger (18a), immerse the pipe hanger assembly (10) and the preparation tool (30) through the BOP stacking drilling (20), partially closing the ram (20r ') to the mandrel (46), continuing to submerge the pipe hanger assembly (10)) and the preparation tool (30) until the adjusting nut (48) rests on the partially enclosed ram (20r ') with the pipe hanger housing (24) positioned within the wellhead housing (14) with the bottom of the pipe hanger housing (24) positioned a few inches above the upper end (18c) of the cover hanger (18a). The method of claim 27 in which the lower tubular member (32) and the sealing and fastening assembly (34) are carried downward in the row of cover row (18) while the hanger assembly pipe (10) are submerged in the wellhead housing (14), the method further comprising the step of vertically fixing in pipe hanger assembly (10) to the roof row (18) by activating the fastening assembly (34) against the inside of the roof row (18). 27. The method of claim 28 further comprising the step of freeing the end of the preparation tool (30) from the (10) open the ram (20r '), and remove the preparation tool (30) from the perforation of the BOP stack (20). 30. A method for installing a pipe hanger assembly (10) in a wellhead housing (14) wherein the wellhead housing (14) supports a roof hanger (18a) connected to the row of covers production (18), the method comprises the steps of: providing the pipe hanger assembly (10) with a pipe hanger housing (24) having an outer diameter arranged and designed to fit within the borehole of the wellhead housing (14). ) and having a tubular member (32) and a fastening assembly (34) carried by the pipe hanger housing (24) and placed and designed to fit within the row of production covers (18), submerge the assembly of pipe hanger (10) in the wellhead housing (14) with the pipe hanger housing (24) positioned within the wellhead housing (14) and the tubular member (32) and the fastening assembly (34) placed within the row of production covers (18) until a lower surface of the pipe hanger housing (24) is positioned a few inches above the upper end (18c) of the cover hanger (18a), and activate the in fixing sampler (34) against the inside of the row of production covers (18), wherein the pipe hanger housing (24) and the tubular member (32) are held vertically only by means of the coupling of the fixing assembly (34) with the cover hanger (18a) in a position below the pipe hanger housing (24).