MXPA00002095A - Assembly and process for drilling and completing multiple wells - Google Patents

Abstract

An apparatus (10) and process are provided for drilling and completing multiple subterranean wells from a template which is secured within a cased well bore extending to the surface. An orienting cam having a bore (20) therethrough is positioned above the template such that the bore through the orienting cam is automatically aligned with one of at least two bores through the template. Fluid tight seals are provided between the orienting cam and the casing and between the orienting cam and one of the at least two bores through the template. Thereafter, a drill string including a drill bit is lowered from the surface of the earth through the casing, the bore through the orienting cam and the one bore through said template to drill a first subterranean well bore.

Description

SET AND PROCESS FOR PERFORARY COMPLETE MULTIPLE WELLS Cross Reference to Related Requests This application is a partial continuation of the patent application of the United States of America, Serial No. 08 / 548,565, filed on November 11, 1997.

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an assembly and process for drilling multiple underground wells from a coated borehole, which extends to the surface and, more particularly, to such assembly and process to drill and complete multiple underground wells, through a pattern that has at least two holes drilled therein and secured to the liner, where the fluid is circulated to the surface during drilling, by means of this liner.

Description of Related Art Increasingly, well boreholes are being drilled into the underground formations in an orientation, which is purposely deflected from the true vertical, by means of conventional guide auger technology or an earth motor. mud secured in the drill string adjacent to the drill bit. In fractured underground formations, deviated wells are used to increase the drainage area, defined by the well within the underground formation, and, thus, increase the production of hydrocarbons from the underground formation. An inherent problem in using the conventional guide bit to drill a deviated well is that both the depth and radial orientation of this guide bit are adjusted when the guide bit is placed inside the hole of the well and can not be changed without recovering This guide bit from the hole of the well and change the depth and / or its radial orientation. In addition, wells drilled from offshore drilling platforms are usually diverted to increase the number of wells that can be drilled and completed from a single platform. Offshore drilling platforms, which are used in deep water to drill and complete wells in an underground formation, vary in size, structure and cost, depending on the depth of the water and the loads in the suals the platform will be established. For example, a platform can be constructed to be supported, in part, by a leg or pneumatic caisson, which extends to the floor of the ocean or by as many as eight such pneumatic feet or caissons. The costs of offshore drilling rigs range from approximately US $ 5,000,000 to US $ 500,000,000. Each offshore drilling platform is equipped with an established number of slots, by means of which the diverted wells can be drilled and completed through the linings, the limes are secured to the platform by conventional techniques. Due to the significant capital expenditures required for these offshore platforms, patterns and processes have been developed to drill and complete multiple coated wells. During drilling operations, which use such patterns, a conventional vertical pipe is lowered into the surface or intermediate coating and inserted into one of the holes formed through the pattern. Once the vertical tube is properly positioned within the borehole, the intermediate surface or coating is cemented into the borehole by conventional techniques and a conventional drill string, which includes a drill bit and a mud motor (not shown) it is transported inside the vertical tube inside the hole of the pattern, whereby the floating valve or plug and any cement are drilled and separated from the standard hole. Next, the well bore is drilled through the drill string, in a conventional manner, with the drilling mud and the formation cuttings being circulated out of the well bore to the surface by means of the vertical pipe. The drill string is then removed from the vertical tube and, after the well is equipped with any tubular element, the vertical tube is removed from the standard hole, rotated and inserted in another hole through the pattern. An additional well can then be drilled and completed in the manner just described. However, the manipulation of the vertical tube on the surface, to insert the same in and out of a given hole through multiple well patterns, which are placed inside the hole of the coated well, at depths of up to 300 meters or more, and to rotate the vertical tube for insertion in another hole, can be problematic. Thus, there is a need for a set and process for drilling and completing multiple coated wells through a multiple well pattern, placed inside a coated well, in an underground location, which eliminates the need to use a vertical pipe within the well. hole to connect under the surface or a pattern from inside the hole to the surface. Therefore, it is an object of the present invention to provide an assembly and process for drilling and completing multiple wells within one or more underground formations, from a coated well borehole, which eliminates the need to use a vertical pipe in conjunction with the same.

SUMMARY OF THE INVENTION In order to achieve the foregoing objects and others and in accordance with the purposes of the present invention, as embodied and described herein broadly, a characterization of the present invention relates to a process for drilling underground wells from a coating, the which extends from an underground depth to the surface of the earth and to which a pattern within the hole or subterranean, which has at least two holes through it, is assured. The process involves drilling a first underground hole bore through the boreholes by the pattern and into the underground formation and circulating fluid to the surface by means of the coating during the drilling stage. In another characterization of the present invention, a process is provided for drilling underground wells from a coating, which extends into an underground depth to the surface of the earth and to which a pattern within the hole or subterranean, which has at least Two holes through it, it is assured. The process comprises placing an orientation cam, which has a hole through it, above the pattern, so that the hole through the orientation cam is aligned with one of at least the two holes through the pattern. A seal, fluid tight, is supplied between the orientation cam and the liner. A seal, fluid tight, is also supplied between the orientation cam and one of at least two holes through the pattern.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and form part of the specification, illustrate the embodiments of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings: Figure 1 is a perspective view of one embodiment of the assembly of the present invention, which includes a positioning cam and a tubular seal assembly and is used in conjunction with a pattern of multiple wells, underground or within of the hole; Figure 2 is a perspective view, partially cut away, of the assembly illustrated in Figure 1; Figure 3 is a view extended 3602, partially in section, of the external surface of the positioning cam of the present invention; Figure 4 is a cross-sectional view of a pattern within the hole or underground; Figure 5 is a perspective view, partially resorbed, of the set of Figures 1 and 2, illustrating its seal assembly, sealed in a sealed hole in an underground pattern of multiple wells; Figure 6 is a perspective view, partially cut away, of another embodiment of the set of the present invention, illustrating its seal assembly, soldered in a sealed form within a hole of an underground pattern of multiple wells; Figure 7 is a cross-sectional view of yet another embodiment of the assembly of the present invention, the sual illustrates its seal assembly in sealed form, soldered within a borehole of an underground pattern of multiple wells; Figure 8 is a perspective view of the solosion cam of the present invention, the sual used in conjunction are a tubular seal and an underground pattern of multiple wells; Figure 9 is a perspective view of several somatic parts of the solosion cam of the present invention; Figure 10 is a schematic illustration of the sonfiguration of the groove that is formed in the outer surface of the stamp assembly of the present invention; Figure 11 is a cross-sectional view of the embodiment of the set of the present invention, illustrated in Figure 7, showing its seal set removed from the blasting of a multiple-well underground well and aligned are another blasthole underground pattern of multiple wells; and Figure 12 is a cross-sectional view of the set of the present invention, illustrated in Figure 7, illustrating its seal set, as it is soldered in sealed form within another hole of an underground pattern of multiple wells.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES As illustrated in Figure 1, the set of the present invention, the sual is generally illustrated in 10, fasilita the perforation and termination of multiple wells, by means of patterns within the hole or underground, such as the pattern outlined in the US patent, No.5, 330, 007, the sual is insorporated here so referensia. The apparatus 10 comprises a solosion cam 11 and a tubular seal set 40, the sual is secured to and depends on the cam 11 in the dessrita form below. This cam 11 is provided with at least one annular seal 12, for example one or more molten glass seal rings, as manufactured by Baker Oil Tools, around its outer periphery and a slot J-4, 14, formed in its external surface 13. Cam 11 is provided with a hole through it (Figure 2). This bore 20 has a portion 22 uniformly tapered, a second annular portion 23, generally sessile, a third portion 24, tapered non-uniformly, and ends in an axially displaced portion 25. The portion 24, tapering not uniformly serves as a deflection block or guide bit, in a later manner dessrita. A profile 19, generally annular, is provided on the cam 11, adjacent to the second annular portion 23 of the hole 20. The lower portion of the cam 11 is provided with screw rosses 26. The tubular seal assembly 40 is provided with a bore therethrough, at least one annular seal 42, for example one or more glass seal rings, such as those manufactured by Baker Oil Tools, and a collar 44 having a plurality of fingers 47. Each finger is oriented to the outside and a corresponding portion of the outer surface of the finger is threaded. Above the sollar 44, the outer surface of the tubular element 40 is provided with roses 41. As the cam 11 and the tubular assembly 40 are assembled before soinsidir they are a pattern of multiple wells and solos in the underground placement within the wellbore, the rossed session 41 of the tubular seal assembly 40 is blown by the internal rosses 26 of the cam 11. An example of an adessed pattern within the hole or subterranean, is illustrated in Figure 4, generally about 100 and is overshadowed by a first upper session 101, an elongated frame 107 and a plurality of tubular members 104. The upper first session 101 is provided with two holes through it, having lower rosed sessions 102. The end flap 112 of the first session 101 is form are muessas 115, 116 that surround the intersession of the two holes. An elongated frame (e.g., an I-beam or an H-beam 107) is secured to the other end face of the first session 101 by any suitable means, such as by bolts. , they are secured to the beam in I or the beam in H, 107, along its length, such as by welds.The tubular members 104 collapse through the guides 109 in the beam of the beam in I or in H, 107, and soinsiden are the rossed sessions 102 of the holes through the first session 101. The guides 109 operate in symbiosis are the elongate marsus 107 to restrain and inhibit the movement of one or more tubular members 104, solved through of these guides Different tubular members 104, soldered on the same beam of the beam in I or H, 107, are secured together by any means, for example, threaded collar 105. The free end of each tubular member 104 matches with a shoe 106 to which a valve is secured lotante 126 on one side of beam I or H, 107, while a plug 136 is inserted on the other side of beam 107. As illustrated in Figure 4, holes 120, 130 are each provided with first sections 121, 131, second sessions 123, 133, and terseras sessiones 125, 135, respectively. The first and second sessiones of the holes 120130 define annular backings 122, 132 therebetween, while the second and third hole sessions 120, 130, define between them the annular backs 1214, 134. The holes 120, 130 can be arranged to thereby deviate from each other from the beam 112. of end hasia the saras of end 114, 113, respectably. If they are arranged to deviate, the degree of such divergence should usually not exceed 22 over the total length of the pattern 100 and is preferably less than ls. In the embodiment illustrated in Figure 4, the bore 130 is more supported than the borehole 120 to supply a portion of the underground formations between end flares 113 and 114, within the sual drilling sordum, which emanates from the borehole 130. , can be diverted in order to reduce to a minimum the possibility of interferensia between the drill holes that are drilled and filled, according to the present invention. The holes 120 and 130 can also be substantially identical in length. In either embodiment, one or both of the beam members in I, 107, may be provided are one or more probes or gliders secured below one or more holes 120 and / or 130 by any means adesuado, such as welds, for also help to reduce to the minimum the interferensia between the drill holes of well drilled using the pattern 100, according to the present invention. As it is thus assembled, the first session 101, the beam 107 and the tubular members 104, define a pattern 1O0, having two generally sills, 120, 130 therethrough. Examples of the relative dimensions of the pattern 100, the length of the first session may be 1.22 meters, the beam 107 may be 9.14 meters, and the intermediate or superfisial covering 90 may be 2.44 meters. When drilling or extending beyond the sea 107, the length of the drillhole 130, as measured from the bottom of the first session 101 to the end of class 113, may be up to 9.14 meters or less, while the length of the drillhole 120, as measured from the bottom of the first session 101 to the end of the 114, may be up to 13.72 meters or less. When the bore 130 extends beyond the sea 107, the length of the bore 130, as measured from the bottom of the first can be extended, as measured from the bottom of the first session 101 to the end of the 314, up to 3,048 meters or more, depending on the formations that will be drilled and completed, according to the present invention. As illustrated in Figures 4 and 5, the pattern 100 is preferably secured to a sondustor session, surface or intermediate coating 90 by any suitable means, such as by rossing or welding. The liner 90 is provided with a latch 92. The outer surface of the cam 11 is provided with a slot 14 of type J-4, the sual in the assembly being the slavl 92 operates to orient the tubular element 40 for insertion into the lug. in any hole 120 or 130, in a way after it goes off. During the operation, the pattern 100 is secured to the bottom or joint session of the surface or intermediate coating 90 on the surface by any half-discarded means, such as by screw threads. The assembly 10 is disengaged within its bottom session or surface seal or intermediate liner 90, until the pin 92 makes contaste are the groove 14 in the outer surface of the cam 11. The insined surfaces of the groove 14 make the cam 11 and the tubular seal set rotate until the slavic 92 assumes the 14th position, as shown in Figure 3. oriented, the set 40 of tubular seal will be aligned and soldered within the bore 120 of the pattern 100, so that the fingers 47 of the sollar make sontaste are the rossed session 127 of the bore 120 and the seals 42 of the seal set 40 make contact with the internal walls of the first section 121 of the bore 120, in order to supply a hermetic seal to the fluid between them. As illustrated in Figures 2 and 5, one or more annular seals 12 of the set 10 make counterpart are the internal surface of the bottom seam or surface seal or intermediate coating 90, so as to provide a hermetic seal to the fluid between them. . Preferably, the internal surface of the bottom or joint session of the surface or intermediate coating 90, is polished to thereby ensure the integrity of the seal formed in contact by one or more annular seals 12 of the set 10. Thus assembled, the surface coating or Intermediate 90 is soldered within hole 54 of the well ensuring additional sessions or joints of the lining together, in a sonvensional manner, the shape of the lining of the liner is lowered into the borehole of the well, as will be apparent to those skilled in the art. The liner 90 is then semented within the borehole of the well 54 by modern tiansys. A sonorous drilling rig, which includes a drill bit and a mud motor (not shown), is lowered into the liner and guided through hole 20 by means of tapered first and third sections, 22 and 24, and through the bore 49 in seal set 40 and within bore 120 of pattern 100. Therefore valve 126 and the sement, if any, is drilled in borehole 120. Next, a first borehole is drilled through the borehole. drilling shank in a sonvensional way, thus it will be evident to those skilled in the art that the drilling mud and the springs of the formations are squeezed out of the hole of the well and through the holes 20 and 49 in the set and coating 90 to the surface. The seals 12 and 42 work to isolate the bore 130 from the pattern and a significant portion of the outer surface of the cam 11 and the seal assembly 40 from the drilling mud circulated. This first borehole can be drilled in a vertical or offset orientation. Next, the drilling sordum is pulled to the surface and the lining, the sual is equipped with a line gansho, it can be disengaged inside the first hole borehole through holes 20 and 49 in the set, by means of a perforation tube and secured to the pattern 10 and semented within the first hole of the well by son- sonional tisanes.

The drilling sledge is equipped with a suitable traction tool near its lower end. This drill string is lowered into the liner 90 and guided through the bore 20 by means of the first and third tapered portions, 22 and 24, until the transfer tool is bent are the annular profile 19 in the hole 20 of the set 10. The drill string is then raised, thereby causing the fingers 147 of the collar to disengage from the threaded section 127 of the bore 120, so as to allow the set 10 to be raised to the sontasto of the slavicle 92 within the groove 14. , which causes the orienting cam 11 to rotate automatically until the pin 92 assumes the position 14b within the slot 14 (Figure 3). The subsequent disengagement of the drilling shank causes the cam to rotate until the slavic 92 solidifies in 14 s within the slot 14. In this orientation, the tubular seal assembly 14 will be aligned and set within the bore 130 of the pattern 100, so that the fingers 47 of the sollar make sontaste are the rossed session 137 of the bore 130 and the seals 42 of the seal set 40 make sontaste are the internal walls of the first session 131 of the bore 130, in order to supply a hermetic seal to the fluid among them. As illustrated in FIGS. 2 and 5, the annular seals 12 of the cam 11 are placed in the stannate, the internal surface of the bottom session or joint of the surface or intermediate cladding 90, in order to provide a hermetic seal to the fluid between the stapes. Next, the drilling shank is used to drill the plug 136 out of the borehole 130 of the pattern 100. This drilling shank is passed through the borehole30 and a second borehole is drilled in a sonvensional manner are the drilling mud and the formation springs are squeezed out of the second hole in the well and through boreholes 20 and 49, in the set and coating 90 to the surface. The seals 12 and 42 work to isolate the bore 120 from the pattern and a significant portion of the outer surface of the cam 11 and seal set 40 of the drilling mud circulated. The second well borehole can also be drilled in a vertisal or offset orientation. Next, the drilling sordum is pulled to the surface. The coating, the salt is equipped is a linear gansho adesuado, is then dessendido within the second hole of the well through the holes 20 and 49 in the set 10 by means of the tube of perforation and secured to the pattern 100 and thus to the superfisial coating or intermediate 90, by sonventional means. The coating can be semented within the second borehole of the well. The drilling shank is equipped with an unscrewed transfer tool and disengaged within the liner 90 until the transfer tool becomes stable within the annular groove 19 in the bore 20. The subsonic hoisting of the drilling shank makes the fingers 147 of the sollar disengage from the rossed section 137 of the bore 130. The sontasto of the slavic 92 in the groove 14 causes this pin 92 to disengage from the groove 14, thus allowing the drill string and the set 10 to be raised to the superfisie. The set 10 can be used in combination with a multiple well drilling pattern within the hole or underground, to drill and complete the wells of the offshore drilling equipment, the wells of the bottom of the sea or offshore platforms. In accordance with another embodiment of the present invention, as illustrated in Figure 6, the cam 11 is provided with a threaded bore 30 on its face adjacent axially to the displaced portion 25 of the borehole 20. This cam 11 and the tubular assembly 40 are assembled by the sontasto of the rossed session 41 of the set 40 of the tubular seal inside the threaded bore 30 of the cam. Thus, the suture 40 of the tubular seal is aligned and solosado within the bore 130 of the pattern 100, in a manner previously disregarded are referensia to Figures 1 to 5, the bore 20 of the cam 11 will operate to guide a convensional drill string within the bore 120 of the pattern 100, during the drilling operations, as described above. . In this embodiment, the annular seals 42 may not be necessary, since tolerance stresses between the tubular seal set 40 and the bore 130 of the pattern 100, whereby the seal assembly is inserted there (as illustrated in FIG. 6) it functions to effectively prevent the perforation cuttings from being deposited in the hole 130. When the annular seals 42 are used, these seals are placed above the collar 44, as illustrated in Figure 6. Another embodiment of the assembly of the present invention is illustrated in Figure 7. The apparatus of the present invention is generally illustrated at 200 and comprises a solosion cam 211 and a tubular seal set 240, the salt is secured to and depends on the cam 211 in a downwardly disengaging manner. The cam 211 is provided with at least one annular seal 212, for example, glass seal rings, such as those manufactured by Baker Oil Tools, around its outer periphery and a slot 214 of type J-4, formed on its surface. external 213 (Figure 8). The cam 211 is also provided with a bore 220 therethrough, of variable diameter, so as to define a first and second annular backs, 221 and 222. At least one annular seal 223, for example glass seal rings, such As manufactured by Baker Oil Tools, it is provided around the outer periphery of hole 220, sersa of its end. A pin 216, having an enlarged bulk portion 216, is soldered into the bore 217, the sual extends through the cam 211 from the bore 220 to the outer surface 213. A set of tubular seal seals 240 is provided. bore 249 therethrough, and is oversupplied by sessions which are secured together by any suitable means, such as by screw threads, thereby defining an end, generally annular, backrest 241. An end portion 242 of the tubular seal set 240 is enlarged to thereby define an annular backing 244 around the outer diameter of the set 240. A beveled profile 243 is provided within the inner surface of the enlarged end portion 242, while a groove 247 (Figure 10) is provided on the outer surface of the tubular seal set 240, intermediate its length. A slot 218 (FIG. 8) is formed in the outer surface 213 of the cam 211 and preferably has a generally longitudinal orientation. A locking mesanism, illustrated generally at 250 in FIG. 9, shows a generally silineous body 251 having a groove or groove 252 formed in one of its external saras and a tongue or protuberansia 253 projected from its other end sara.

An elongated bar 254 is soldered within the slot 252 intermediate the length of the bar 254. As assembled, the bar 254 is placed within the slot 218 in the cam 211 and the body 251 is placed inside a hole 228, which extends through the cam 211 from the bore220 to the outer surface 213. Preferably, the bore 228 is not radially aligned with the bore 217, as illustrated in Figure 7. The tongue 253 extends into the groove 247 on the outer surface of the tubular seal assembly 240. When the set 200 is lowered into the casing 90, the sual has previously been seethed within a well bore 54, the tab 253 being unscrew in 247a in the slot 247. In this position, the bar 254 is bent within the slot 218. During the operation, the pattern 100 is secured to the bottom or joint session of the superfisial or intermediate coating 90 on the surface, by any means adesuado, such a The screw and the superfisial or intermediate cladding 90 are soldered into the hole 54 of the well ensuring additional sections or joints of the casing together in a conventional manner, so that the cladding slab is lowered into the hole of the well, as will be evident from an expert in the field. The set 200 is then lowered into its bottom or joint session of the superfisial or intermediate coating 90 by means of an annealed tool, secured to the perforation tube and is stamped within the beveled profile 243 on the inner surface of the elongated end portion 242 The set 200 is lowered until the pin 92 makes contaste are the slot 214 on the outer surface of the cam 211. The inclined surfaces of the slot 214 cause the cam 211 and the tubular seal set to rotate until the slavic 92 assume the position 14a, as illustrated in Figure 3. Thus oriented, the set 240 of the tubular seal will be aligned are the bore 120 of the pattern 100. As illustrated in Figure 10, the tongue 2543 is soldered in 247a in-house. the slot 247 in the tubular assembly 240 and ensures that this tubular assembly 240 is only allowed in the retracted position, as illustrated in Figure 11. In this position, the enlarged portion of the mass 216 of the pin 215 is received within the pocket 248 in the outer surface of the set 240 and the back 241 on the outside of the tubular assembly 240 to the stanchion are the backrest 222 within the bore 220, so as to retain the set 240 within the bore220. The movement of the tongue 253 within the slot 247 is inhibited by the configuration of the slot 247. The clamping of sufficient force, for example of 1750 kg / cm2, to the bar 254 by the perforation tube (not shown), the Together 240, the slot 247 and the tongue 253 is required to overcome the force exerted on the tongue 253 within the slot 247 by the bar 254, which is bent into the slot 218 and to allow this bar 254 to move in the porsión elongated slot 247. Alternatively, slot 248a may be aligned are the elongated portion of the slot and saber 216 of slavy 215 may be snapped to retain tab 253 at the lower end of slot 247 until it is apply a force sufisiente, for example of 1750 kg / sm2, to retrace the sabera 216. The set 240 is then dessendido through the hole 220 and into the bore 120 of the pattern 100. The seals 245 of the seal set 240 are puffed in the s internal walls of the first session 121 of borehole 120, in order to supply a hermetic seal to the fluid between them. The backing 242 of seal assembly 240 abuts are the backing 221 of the abutment220 and the seals 223 to provide a hermetic seal to the fluid. In this disengaged position, the tubular seal set 240 forces the slag 215 within the recess 94 in the wall of the sheath 90 to further secure the cam 211 to the sheath 90., a force sufisiente, for example of 3,500 kg / sm2, must be aplimated to the bar 254 by means of the perforation tube, set 240, slot 247 and tab 253, to bend the bar 254 inside the slot 218 and allow the tab 253 is soldered at 247b into slot 247. The force needed to move tab 253 to posi- tion 247b also unlocks the tool that is secured to the perforation tube of the sontaste are profile 243. As illustrated in Figure 7, the annular seals 212 of the set 200 are blown to the internal surface of the bottom session or gasket of the superfisial or intermediate layer 90, in order to provide a hermetic seal to the fluid between them. Preferably, the internal surface of the bottom or joint session of the superfisial or intermediate coating 90 is polished to thereby ensure the integrity of the seal formed in the sonata by other annular seals 212 of the set 200. It will be apparent to one skilled in the art that the Slot 214, as used in this embodiment of the set of the present invention, will be similarly configured to slot 14, as illustrated in Figure 3, that the vertical portions of slot 214 that correspond to positions 214a and 214b will be As the tubular seal assembly 240 is slidably secured for releasing the cam 211 and thus can be disengaged in a sontasto, it is a drill hole of a multiple-well pattern, once the cam has aligned in the rightly dessrita manner. The drill shank is a secured tool, it is raised to the surface and the liner 90 is then semented into the hole 54 of the bozo by conventional techniques. A conventional drill string, including a drill bit and a mud motor (not shown) is lowered into the liner 90 and guided through the bore 220 by means of the tapered position 227 of the bore 220 and through the bore 249 in the seal assembly 240 and within the bore 120 of the pattern 100, so the valve 126 and the cement, if any, are drilled out of the borehole 120. Next, a first borehole is drilled and filled with a As described above they are respected to Figures 1 to 5. When appropriate, it is preferred to solosar the assembly 200 within the bottom section of the superfisial or intermediate coating 90, on the surface, so that the seals 245 of the assembly seal 240 engages the internal walls of the first session 121 of the bore 120, in the manner before it dessrita. In this embodiment, the cam 211 and seal assembly 240 are completely assembled to the pattern 100 in the surface and the surface or intermediate coating 90 is the pattern 100 secured there is welded into the wellbore 54 ensuring additional sessions or cladding joints. Together in a sonvensional fashion, the bead of the lining is lowered into the borehole of the well. In this way, the need to use the drill pipe with a suitable tool secured to the solosion assembly 200 within the hole in the pattern 100 is eliminated. After the first well is drilled, the perimeter sordum, which is equipped, is an annealed transfer tool attached to its lower end, lowered into the liner 90 and guided through the borehole 230 by means of the tapered portion. 227 and through the hole 249 in the stamp set 240. The drilling shank is then raised until a sufficient pressure is exerted on the rod 254 to bend it, thereby allowing the tongue 253 to rotate and move within the slot 247. The set 200 is raised until the backrest 241 stops. they are the backrest 222, so that the tang 216 of the pin 215 is retracted into the annular beak 248, which is formed in the outer surface of the set 240 of the tubular seal and thus allows the cam 211 to also be raised. The sonata of the slavic 92 within the slot 214 leaves the orienting cam 211 to rotate automatically until the slavic 92 assumes the position 214b (FIG. 3) within the slot 214. The subsequent descent of the drilling shank makes the cam turn until the 92 slavija is soloed on 214s inside slot 214. In this orientation, the set 240 of the tubular seal will be aligned are the bore 130 of the pattern 100, so that the seals 242 of the seal set 240 make sontasto are the internal walls of the first session 131 of the borehole 130 that desserts in order to supply a hermetically sealed seal to the fluid between them. Once the seal assembly is completely disengaged, the pin 215 will be forced into annulus is the annular pocket 94 in the inner surface of the liner 90. Next, the drill string is used to pierce the plug 136 out of the bore 130 of the pattern 100. This drill string is passed through the barrenol30 and in the second hole borehole it is drilled and filled in the above-described manner, they are respected to Figures 1 to 5. The drilling sordum is then elevated to the surface, sual causes the transfer tool to be blown into profile 243 in the tubular seal assembly. The contact of the plug 92 with the slot 214 causes this pin 92 to disengage from the slot 214, thereby allowing the drill string and assembly 200 to be lifted to the surface. The set 200 can be used in symbiosis are a multi-pore drilling pattern, inside the hole or underground, to drill and solidify the wells from offshore drilling rigs, well heads on the seabed or offshore platforms . Although the set of the present invention has been illustrated and dessrito as being used together are an underground pattern or under the hole, which has two holes through it, it will be evident to an expert in the matter that the set of can use are an underground pattern or inside the hole that has three or more holes. When three holes are supplied through the pattern, the slot 14 or 214 on the outer surface of the cam 11 or 211 will be reshaped in such a manner as will be apparent to one skilled in the art, to allow rotation of the cam 11 or 211 in increments of 1202. When more three holes are provided through the pattern, slot 14 or 214 on the outer surface of cam 11 or 211 will be reconfigured to allow the rotation of this cam 11 or 211 in graduated instruments, as it will be evident to an expert in the field. In addition, expandable strips (not illustrated) can be used in place of sollar 44, as will be apparent to one skilled in the art. While the previous preferred embodiments of the invention have been discussed and shown, it will be understood that alternatives and modifiations, as may be suggested by others, can be made in them and still be within the scope of the invention.

Claims (18)

1. CLAIMS 1. A process for drilling underground wells from a lining, the sual extends from an underground depth to the surface of the earth, and in the sual an underground pattern or below the hole is secured, which has at least two holes through of the same, this proseso comprises: colosar an orienteering cam, which has a hole through it, above the pattern, so that the hole through the orienteering cam is aligned are one of suando minus two holes, through of the pattern; to secure the orienteering cam to the other of suando minus two holes, through the pattern, so that the levant orienteering cam remained loose; and sirsular fluid to the superfisie, by means of the hole in the orienteering cam and by way of the lining, during the drilling of a first hole of underground well, through one of the holes and within an underground formation.
2. 2. The process of claim 1, which further comprises: reclosing the orienteering cam above the pattern, so that the hole through the orienting cam is aligned is the other of suando minus two holes through the pattern.
3. 3. The process of claim 2, further comprising: securing the orientation cam to one of the holes through the pattern, so that the remaining positioning cam is resurfaced.
4. 4. The prosecution of the vindication 3, which also 1 somprende: sirsular fluid to the surface of the coating, during the drilling of an underground formation.
5. 5. The proseso of the reivindisasión 1, which also somprende: provide a hermetically sealed to the fluid, between the orienteering cam and the gold of at least two holes, through the pattern.
6. 6. The process of the claim 5, in which the step of supplying a hermetic seal to the fluid, between the orienteering cam and the other of suas minus two holes, through the pattern, it is necessary to insert a portion of a tubular set, the sual is it ensures, in sealed form, and depends, in sliding form, on the cam in the other hole, this porsión of the tubular assembly, the sual is inserted in the other hole of the pattern, it has substantially annular seals around its outer part.
7. 7. The progression of the claim 3, in which the assurance stage appears to lock, in a releasable manner, the tubular assembly in the position where the porsión of the tubular set is inserted in the other hole of the pattern.
8. 8. The process of claim 1, in which the step of releasing the orienteering cam above the pattern, so that the sweep through this orienting cam is aligned is the other of suando minus two holes through the pattern, The contact of the cam with a pin, which is secured to the lining, is shown, this slavija and the cam are used in sontasto to align a vertical pipe, the other of which is less two holes through the pattern.
9. 9. The process of claim 2, in which the step of resolving the orienteering cam above the pattern, so that the borehole through this orienting cam is aligned is one of at least two holes, through the pattern, The sontasto of the cam is a slavija, the sual is secured to the lining, this slavija and the cam are operated during the sontasto to align a vertical tube, they are one of at least two holes through the pattern.
10. 10. The process of the vindication 1, in which the first hole of underground well is drilled passing a drilling sordum, which includes a drilling bit, from the surface through the lining, this hole through the orienteering cam and the other drill through the pattern.
11. 11. The process of claim 10, wherein the fluid is circulated from the surface through the drilling shank and back to the surface, by means of the first underground well bore, the other of at least two holes through the pattern, the hole through the orientation cam and an annular spasius, defined between the drilling sordum and the lining.
12. 12. The proseso of the vindication 4, in which the second hole of underground well is drilled passing a drilling sordum, which includes a drilling bit, from the surface through the lining, the hole through the orienteering cam and a hole through the pattern.
13. 13. The progression of the vindication 12, in which the fluid is siled from the surface through the drilling sordum and back to the surface, by means of a second underground well sweep, the first of suas minus two holes through the pattern and the hole through the orienteering cam and an annular spasius defined between the drilling sordum and the lining.
14. 14. The proseso of the reivindisasión 3, which also somprende: to provide a hermetical seal to the fluid, between the orienteering cam and the first of suando minus two holes through the pattern.
15. 15. The process of claim 14, in which the step of supplying a hermetic seal to the fluid between the orienting cam and the first of at least two holes through the pattern, involves inserting a portion of the tubular assembly, the sual being secured, in sealed form, a and depends slightly on the cam in the first hole, this porssion of the tubular assembly, the sual is inserted in the first hole of the pattern, it has substantially annular seals around its outer part.
16. 16. The process of the claim 15, in which the securing stage appears to lock, in a releasable manner, the tubular assembly in the position where the porssion of the tubular assembly is inserted in a first hole in the pattern.
17. 17. The process of claim 1, further comprising: providing a fluid tight seal between the orientation cam and the coating.
18. 18. All the inventions described herein.