Patent Publication Number: US-6901998-B1

Title: Method for using a multipurpose system

Description:
FIELD OF THE INVENTION 
     The invention relates to a method for using a multipurpose tower with casing drilling and coil tubing equipment located on a cantilever adapted to pivot and move along an x-y axis for use on a platform or vessel such as a cantilever on a jack-up for drilling and well intervention. 
     BACKGROUND OF THE INVENTION 
     Drilling rigs has traditionally been designed to exclusively use joint drill pipe to drill wells, jointed casing to complete wells and jointed tubing to produce wells. A need has existed for a rig design which integrates a multi purpose tower, coiled tubular equipment systems, and casing drilling equipment systems, which can be disposed on a moveable and pivotable cantilever, particularly for jack-up rigs. This Multi Purpose Unit Rig Design, which has an ability to handle many different types of tubulars in order to increase the flexibility and efficiency of the operation, also provides a much safer work environment. New emerging technologies such as casing and continuous tubular “Coiled Tubulars” drilling and well intervention techniques are now ready for commercial application. These technologies and techniques effectively eliminate the number of jointed tubular trips required to be made in and out of the well. Tripping jointed tubulars is a slow and costly operation but also represents the single greatest safety hazard in an offshore operation. The elimination of many of these trips not only reduces well drilling and maintenance costs but prevents accidents. In addition, many times these technologies can not be used economically because of the high costs to efficiently integrate such equipments into traditional rigs. Drilling rigs have also traditionally used lattice derricks to support hoists on rigs. These derricks have significant safety issues in that equipment or structural elements can become detached and fall on worker&#39;s heads on the platform. Also the hoisting action is subject to pitch and yaw of the vessel and the equipment can become dangerous. 
     SUMMARY OF THE INVENTION 
     The current invention overcomes the previous art by providing a method for drilling a well and for well intervention using a multipurpose system on a cantilever to drill a well and to perform well intervention operations. 
     The invention is also a method for drilling a well using a multipurpose system on a cantilever to drill a well and to perform well intervention operations. 
     The invention is also a method for using a rotating, pivoting cantilever on a jack-up rig. 
     The invention also relates to a multipurpose system installed on a jack up rig or fixed platform rig or other types of floating rigs. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A specific embodiment of the invention will be described by way of example with reference to the accompanying drawings, in which: 
         FIG. 1  is a side view of a platform with cantilever showing the multipurpose system of the invention; 
         FIG. 2  is a side view of the tower according to the invention; 
         FIG. 3  is a reeving diagram of the splittable block used in the multipurpose system of the invention; 
         FIG. 4  is a side view of the cantilever with the novel multipurpose system disposed on a tubular mast; 
         FIG. 5  is a top view of the cantilever with the multipurpose system of the invention; 
         FIG. 6  is a side view of the cantilever with the novel multipurpose system disposed on a derrick; 
         FIG. 7  is a detailed front view of a splittable block usable with the inventive multipurpose system with all the loose pulleys and two fixed pulleys connected to the trolley; 
         FIG. 8  is a detailed front view of a splittable block according to the invention with only two loose pulleys and two fixed pulleys connected to the trolley; 
         FIG. 9  is a top view of the platform showing the multipurpose system can pivot about a central point on a platform; and 
         FIG. 10  is a side view of a jack-up rig comprising the multipurpose system with the spare crane disposed on various equipment pieces on the cantilever. 
     
    
    
     The present invention is detailed below with reference to the listed FIGs. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Before explaining the present invention in detail, it is to be understood that the invention is not limited to the particular embodiments and that it can be practiced or carried out in various ways. 
     The present invention is related to a multipurpose system for a drilling and well intervention device. The system includes a pivotable, slidable cantilever  10  on a platform  12  adapted to pivot and to slide along an x-y axis. A tower  14  is located in the cantilever  10 . The tower  14  is preferably a tube or sleeve construction but could be constructed using a lattice design. Alternatively, the tower can be a derrick  50 , as shown in FIG.  6 . 
     The tower  14  can be of a modular design with the construction made of large components that are welded or fitted together. Typical activities the system is adapted for are casing drilling, coiled tubing operations, off line tubular handling, conventional drilling, conventional well intervention operations and combinations thereof. 
     The tower  14  has located on it at least one splittable block  20  that is made of a combination of fixed pulleys  80 ,  82 ,  84  and loose pulleys  86 ,  88 ,  90 ,  92  connected to the tower  14  as shown in  FIGS. 7 and 8 . A trolley  22  comprising a holding member  24  secured to the splittable block  20  for holding tubulars  30  or casing  98 , coiled tubing or similar materials. A hoist winch  18  is disposed on the tower  14  and connected to the splittable block  20 . More than one hoist winch  18  can be disposed on the tower  14 , such as a second hoist winch  17 , as shown in FIG.  2 . 
       FIG. 1  also shows at least one storage device  28  secured to the cantilever  10  for storing tubulars  30 . The storage device  28  engages the tower  14  with beam  36 . The storage device is most preferably a vertical storage device.  FIG. 9  shows that a plurality of vertical storage devices can be used,  28  and  28   a.    
       FIG. 1  also shows a racking arm  32  secured to the cantilever  10  and with a beam  36  to the tower  14  for moving tubulars  30  on the cantilever  10 . At least one reel  38  and at optionally two or more reels  38   a  are shown in  FIG. 10  can be used with the invention and are removably mounted within the cantilever  10 . Each reel is contains coiled tubulars  40 . 
     A moveable injector head  42  is mounted on a sliding frame  54  that is removably mounted on the cantilever  10  for running and retrieving coiled tubulars  40  from the reel  38  for use in a well  44 . Also a retractable trolley  46  is moveably mounted on the mast  16  and can optionally connect to the trolley  22  for positioning the tubulars  30  over the well  44  in an extended position, or a first position, and over a work area, such as a mouse hole  48  in a retracted or second position. 
     Coiled tubulars  40  and tubulars  30  are used synonymously when describing this invention. 
       FIG. 3  shows that at least one additional hoist winch  19 , such as a down hole assembly retrieval winch, is mounted on the tower  14 , or the platform  12 , or the cantilever  10 . The winch  19  can be used for running yet another hoist cable over the tower  14  and through an opening in the splittable block  20 , trolley  22  and mast head  16  for setting or retrieving drilling and well intervention equipment. 
     A plurality of splittable blocks  20  and  20   a  can be used in the invention as shown in FIG.  1 . 
     Two main hoisting winches  17  and  18  can be used in this invention. If two are used, each end can be wound onto a separate winch. By winding the two ends  26   a  and  26   b  each onto a separate winch  17 ,  18 , as shown in  FIG. 2 , it is possible to achieve the same hoist cable speed at a relatively low speed of revolution on the winches  17 ,  18 . 
     This design is novel because it means there is an enormous reduction on the wear of the hoist cable  26 . The hoist cable  26 , therefore, does not have to be replaced as often, as is experienced with conventional designs. This design also allows hoist cable  25  that has reached its fatigue life to be wound from one winch  18  to the other therefore eliminating the need to slip and cut the fatigued cable from the system thereby reducing operational non productive time. 
     The invention contemplates that the winch can be driven by a plurality of relatively small motors, each having a low inertia. For example, it is contemplated that the winches can be equipped on both sides with electric motors which engage with a pinion in a toothed wheel of the winch. This design has the advantage that such electric motors are commercially available and no special expensive, hoisting winches are necessary. Also the relatively small motors have a low internal inertia, which means, for example, that when the direction of rotation of the winch is reversed less energy and time are lost during the reversal. This novel design is a significant saving over the known winch and motor designs for this type of tower  14  or derrick  50  construction. 
     Finding a compromise between speed and power is a known problem for current winch construction. A hoist cable is guided in such a way over the cable blocks in the tower  14  and on the trolley  22  that several cable parts extend between the tower and the trolley  22 . In this case, the more wire parts are present between the tower and the trolley  22 , the greater the load that can be lifted with the hoisting device if the hoist winch  18  remains unchanged. In the case where more wire parts are present between the tower  14  and the trolley  22 , the speed at which the trolley  22  can be moved relative to the tower  14  is much lower. 
     In order to find a good compromise between speed and lifting power, it traditionally was decided to provide the hoisting device with relatively heavy winches. The heavy winches ensure that the requirement of being able to move the trolley  22  up and down rapidly can be met in every case. This system has problems in that a substantial part of the lifting power is not being utilized for a substantial part of the time. In other words, the known device is actually provided with winches that are too heavy—and therefore too expensive—to be able to reach sufficient speed occasionally. 
     The invention has been designed to overcome this problem and provide a hoisting device that can lift a relatively heavy load while being operated at a relatively high speed, yet have a light and cheap design. 
     The invention provides a plurality of loose pulleys  86 ,  88 ,  90 , and  92  over which the hoist cable  26  can be guided as shown in FIG.  3 . The loose pulleys  86 ,  88 ,  90 , and  92  can be moved between a first position, in which the loose pulleys  86 ,  88 ,  90 , and  92  are connected to the tower  14 , and a second position, in which the loose pulleys  86 ,  88 ,  90 , and  92  are connected to the trolley  22 . 
     By using the loose pulleys  86 ,  88 ,  90 ,  92  the number of wire parts between the tower  14  and the trolley  22  can be set as desired and minimized. When the loose pulleys  86 ,  88 ,  90 ,  92  are attached to the tower  14 , few wire parts will extend between the tower  14  and the trolley  22 , and a relatively low weight can be lifted. 
     It is possible according to the invention for the loose pulleys  86 ,  88 ,  90 ,  92  to be attached symmetrically relative to the center of the tower  14 . This symmetrical design ensures that the forces exerted upon the cables are also transmitted symmetrically to a tower  14 , which means that no additional bending loads are exerted upon the tower  14 . 
     It is possible according to the invention for the loose pulleys  86 ,  88 ,  90 ,  92  to be accommodated in a housing, which at least on the bottom side is provided with locking elements for fixing the pulleys on the trolley  22 . The loose pulleys  86 ,  88 ,  90 ,  92  are pulled automatically into their first position, in contact with the tower  14 , by tension in the hoisting cable. It is, therefore, sufficient to provide only the bottom side of the housings with locking elements. 
     It is advantageous for the locking elements to be equipped with a hydraulic actuation device. The use of a hydraulic actuation device means that the locking pins can be remotely controlled. This feature is particularly advantageous when eliminating safety hazards is a major concern. 
       FIG. 1  shows a side view of the drilling platform  12  with the hoisting device  6  and crane  58  mounted on the platform  12 . Although the preferred embodiment of drilling platform  12  is a jack-up platform other vessels are contemplated as well such as but not limiting to, a barge, a ship and fixed leg platforms. Also visible are cantilever  10  with tower  14  mounted on top of the cantilever  10 . 
       FIG. 1  also shows that the invention is a jack up rig  100  for a well drilling and well intervention and has a substantially plane shaped or planar bottom  106 . Using this invention on a jack up is the preferred embodiment. 
       FIG. 9  shows more detail on the jack up rig  100  embodiment. As can be seen, the jack up has a frame  102  with a working deck  104 . FIG.  9  and  FIG. 10  shows that the jack up can have at least three supporting feet,  111 ,  112 ,  113  and optionally  115  on the frame  109 . 
     Returning to  FIG. 1 , it can be seen that a usable jack up rig  100  has at least a part of power production equipment  108  arranged in the frame  102  and at least a part of drill and well intervention equipment  110  arranged in the frame  102 . As can be seen in this Figure, the feet of the jack up rig can be moved vertically with respect to the frame by means of lifting devices  114 . In addition, the feet are moveable from a standby position in which said feet are elevated for transportation of the jack up rig  100  and a working position in which the feet support said frame on the sea bottom  116 . 
     The jack up rig  100  as shown in  FIG. 1 , has a cantilever  10  on a platform  12  adapted to pivot and to slide or be wheeled along an x-y axis. 
       FIG. 2  shows a side view of the tower  14  according to the present invention. In the description below the term tower  14  will always be used, but it must be understood that any other suitable device, such as, for example, a derrick  15  as shown in  FIG. 6 , could also be used. In the present invention the tower  14  is a tubular single structure. 
     The trolley  22  can move along a guide relative to the tower  14  as shown in FIG.  2 . The guide can be a pair of rails  52 ,  53  of which only rail  52  is visible. On the bottom side the trolley  22  can be provided with a holding member, such as a bail,  24 , or some other suitable means, to which a load to be hoisted can be attached.  FIG. 2  shows the case in which a top drive  70  with a drill string made out of tubulars  30  fixed below it is attached to the holding member. On the top side, the trolley  22  is provided with three fixed cable pulleys  80 ,  82  and  84  are shown. At least one loose pulley  88 , communicates the hoist cable to the trolley  22  and holding member. 
     In addition to the above mentioned pulleys,  FIG. 3  shows the most preferred embodiment of the splittable block wherein at least four loose pulleys  86 ,  88 ,  90 ,  92  are also present in the hoisting device. These loose pulleys  86 ,  88 ,  90 ,  92  may be attached as desired to the tower  14 . The splittable block also includes the fixed pulleys  80 ,  82 ,  84 . In the invention is preferred that a first end  25  of the hoist cable  26  to be fixed at a fixed point, the second end  27  being rolled up on a second hoist winch  17 . 
     The hoisting winches are preferably driven by electric motors. In one example, each side of the hoisting winch can be provided with such a motor. Alternatively, each hoisting winch can be driven by two electric motors, preferably having a low inertia. 
       FIG. 4  shows a side view of the cantilever  10  with the novel multi purpose system disposed on a tubular mast  16 .  FIG. 4  shows the optional embodiment using a third winch, a downhole assembly retrieval winch  19  that can be fixed to the tower  14  or the cantilever  10 . These down hole assembly winch can be used to retrieve casing drilling bits, motors and measurement while drilling tools as well as position survey tools, coring barrels, and various well cementing or completion equipment. A cable or wire line  21  can attach to the downhole winch  19  and the cable may be as long as 30,000 feet is run over the top of the tower  14  through the splittable block  20  and down to the bottom of the hole or well  44 .  FIG. 4  also shows one of the fixed pulleys  84 , a spare crane  60 , a lifting table  64 , a transportable tubular container  62  for holding and receiving tubulars and a reel drive mechanism  72 . Additionally, a tubular make-up/break out device is shown which is usable on the jack up rig or platform that utilizes the novel system and methods described herein. 
       FIG. 5  shows a detailed top view of the cantilever  10  with the multipurpose system of the invention. The orientation of the tower  14  is shown with the front side facing the well center or with tower axis  76  perpendicular to the cantilever axis  78  of cantilever  10 . 
     At the back side of the tower  14  the draw works comprising of first winch  18  and second winch  17  can be seen. By attaching the draw works at the side facing away from the cantilever valuable deck space is gained. The storage device in this embodiment is a setback drum  29 . Other methods of storing tubulars can be used. The setback drum  29  is attached to tower  14  and mounted on cantilever  10 . Also a tubular make-up/break out device  66  is mounted on cantilever  10 . In a preferred embodiment the tubular make-up/breakout device  66  is a power tong such as manufactured by Weatherford. 
       FIG. 5  shows that tubular make-up/breakout device  66  can reach both well  44  center and mouse hole  48 . Tubular strings can be made up using the tubular make-up/breakout device  66  at the mouse hole  48  while continuing coiled tubing  40  and other operations at the well  44 . It is also possible to breakout/make-up tubulars strings at the well  44  using the tubular make-up/breakout device  66  when the coiled tubing unit is skidded away. 
     Since the majority of the operations are done with coiled tubing; installing a fixed top drive  70  is economically not viable. The cantilever  10  and tower  14  are constructed in such a way that when a top drive  70  is needed for drilling operations this top drive  70  can be fitted quickly with a minimum of interference with the ongoing drilling process. This allows the option to rent the top drive  70  for one well operation. It is clear that by not having to buy or rent for long periods a top drive  70  an economical advantage is gained and the cost to construct a well  44  are lowered. 
       FIG. 6  suggests that according to the invention, coiled tubing  40  is transported to drilling rig on reels  38  using barges and lifted on board the platform  12  using crane  60 . Reel  38  is placed inside cantilever  10  and is driven by reel drive mechanism  72 . It should be noted that the reel drive mechanism  72  can drive and brake the reel  38 . The advantage of placing reel  38  inside the cantilever  10  is that the coiled tubular  40  exiting the reel  38  and going to the movable injector head  42  does not extend to a large height above the deck or surface of cantilever  10 . 
     In applications according to prior art coiled tubing  40  arches upward considerably acting like a barrier for other operations. By placing the reel  38  and the reel drive  72  inside cantilever  10  this problem is minimized and the disturbance of other operations is minimal. Coiled tubulars  40  are fed through movable injector head  42  in a well bore  44 . Movable injector head  42  is placed on a skiddable frame  54 . Skiddable frame  54  can move the movable injector head  42  from a storage area  210  to the working position above the well center  44 . Switching from normal tubular operations to coiled tubing operations takes only a short time leading to a more efficient operation of the drilling rig and less damage to the well  44 . Less damage leads to a more productive well ensuring more production. 
     The injector head  42  is moved to the storage area  210  when jointed tubular operations are being conducted. This allows coil tubing operations to be quickly and safely utilized which in turn allows the use of coil for small operations which normally would have been conducted using jointed pipe. The economic advantage of using coil tubing is the speed in which the tubulars  40  can be run in or out of the well bore. Coil tubulars  40  can typically be run three to five times faster than jointed tubulars  30  which significantly saves rig time decreasing the cost of constructing or maintaining the well  44 . 
     The injector head  42  frame can have the ability to extend or retract in the vertical position increasing or decreasing the distance between the injector head  42  and the rig floor located on the cantilever deck. This ability increases the efficiency when transitioning between a coil tubing operation and jointed tubular operation. This increase in efficiency is created by allowing the coil tubing to be connected to different bottom hole assemblies in a safer and quicker manner by increasing the working height under the grease injector assembly which is the lower most component of the moveable injector head  42 . 
       FIG. 6  shows that the cantilever  10  is fitted with a slot in which a reel drive  72  is present. The reel drive  72  can be moved in vertical direction to accommodate different sizes of reels  38 . This is a particularly advantageous feature. During operation the coil reels  38  can be quickly changed out by using a crane  60 . Changing the reels  38  must be done on a regular basis when the coiled tubulars  40  have reached their usable life or a different size of tubulars  30  is to be used. The crane  60  can hoist the reel  38  out of the cantilever  10  and places them on a storage area  210  on the cantilever deck or the platform  10  or directly on a support vessel for transportation to land not shown. Installing a new reel  38  just involves hoisting the reel  38  and lowering it into the slot. In contrast to coiled reel  38  systems of prior art the reels  38  used in this invention do not have a reel drive  72  attached to them. Because the reels  38  are of such a simple design they are less expensive to manufacture adding to the efficiency of the drilling operations. 
     It is also contemplated that the invention can utilize only one power pack for powering both the top drive  70  and the reel drive  72 . The hydraulic power pack can be mainly used to power the coil tubing reel drive  72  since coiled tubing operations are the majority of the operations done. However sometimes an optional rented top drive  70  can be installed to perform drilling operations. Since the coiled tubing unit is not in operation when the top drive  70  is working the hydraulic power lines can be rerouted to power the top drive  70 . This decreases the cost to construct the invention because now only one power pack needs to be installed instead of the two power packs that are normally used. 
     During the operations with the injector over well  44  the retractable trolley  46  retracts to a position over the mouse hole  48  shown in  FIG. 5 , and can then be used in conjunction with the racking arm  32 , the tubular make-up break-out device  66  and the racking drum  29  and/or lifting table  64 . The tubular make-up break-out device  66  can be manual operated or powered and can be deployed from a cable, a retractable arm or mounted on a skiddable frame  54  which runs on rails as previously mentioned, attached to the cantilever deck. The use of these equipments allows jointed tubulars  30  as shown in FIG.  4  and  FIG. 6  to be connected into stands and set back in the drums or broken into single joints and laid down onto the cantilever  10  or placed in vertical tubular containers  62  of  FIG. 5  which can then be laid down using the lifting table  64 . This invention saves considerable rig time, increasing operational efficiency by removing such operations from the critical path of the well construction or maintenance program. 
     During coiled tubing operations stands of tubulars  30  can be made up or broken apart and the retractable trolley  46  in a retracted position. It is contemplated that the stands of tubular can be casing, drill pipe, completion tubing, down hole equipment and other tubulars  30  that need to be used in the well bore. This saves considerable lime because the equipment needed for the next phase of the operation can be prepared in advance and used directly when needed. 
     As noted in  FIG. 6 , a spare crane  60  can be used. It is particularly advantageous to use the crane when parts of the tubular handling equipment on the cantilever  10  fail. The spare crane  60  acts as a backup crane for the racking arm and racking drum previously described with which operations can be continued although at a lower speed. 
     It is contemplated that the spare crane  60  can also used to lower or retrieve special tools and equipment to and from the drill floor More than one crane can be installed on this rig, as shown in  FIG. 1 , to lift tubular containers  62  on board the drilling platform  12 . Tubular containers  62  are connected to lifting table  64  which lifts the containers  62  into vertical position. Once in vertical position the containers  62  behave like fingerboards as commonly are used in the drilling industry. Using a crane  60 , tubulars  30  can be picked out container, placed into rotating setback drum or moved directly to well center. Tubulars  30  which come out of the hole either are placed in the rotating setback drum or placed into container directly. 
     It is contemplated that spare crane  60  can be mounted on the tower  14 , the vertical storage device  28  or any other suitable place on the cantilever. 
     During the drilling process maintaining a continuous supply of tubulars  30  is an important factor for the efficiency of the drilling operations. In some situations it can be advantageous to have additional horizontal tubular storage containers  56  as shown in FIG.  5 . 
     On the cantilever  10  there is a spare location next to the lifting table  64  where a container can be temporarily stored. This has the advantage that when a new container is needed there is no time lost by first having to lift the previous one of the cantilever  10  and then lifting the new one on the lifting table  64 . Instead after lowering the container to a horizontal position the container just slides to the storage position and a new container is lifted on the lifting table  64 . The container in the storage position can be lifted of the cantilever  10  off-line out of the critical time-path thereby no interference with the continuous supply of tubulars  30  to the firing line. 
     In an embodiment of the invention, a racking arm  32  can be used to lift tubulars  30  from a position horizontal to the cantilever  10  to a vertical position if system is being used without tubular containers  62 . 
       FIG. 7  shows a detailed front view of a splittable block  20  usable with the inventive multipurpose system with all the loose pulleys  86 ,  88 ,  90 , and  92  connected to the trolley  22 . The FIG also shows the use of holding member  24  attached to the trolley  22  over the well  44 . 
       FIG. 8  shows a detailed front view of a splittable block  20  according to the invention with only two loose pulleys  86 ,  88 ,  90 , and  92  and two fixed pulleys  80 ,  82 , and  84  connected to the trolley  22 . This FIG also shows the use of holding member  24  attached to the trolley  22  over the well  44  with the hoist cable  26 . 
       FIG. 9  is a top view of the platform  12  showing the multipurpose system can pivot about a central point  128  on a platform  12 . The cantilever  10  placed on the platform  12  is supported by a jack up  100 . The cantilever is movable in its longitudinal direction as indicated by the arrow A, and in its transverse direction as indicated by the arrow F. In an alternative embodiment, the cantilever  10  can rotate around an axis indicated by the arrow G. A plurality of storage devices, such as vertical storage devices are shown  28  and  28   a . The maximum angle for rotation is contemplated as to 45 degrees. The moving function of the cantilever  10  can be rolling or skidding. 
       FIG. 10  shows a top view of the platform with the cantilever on rails which can slide or skid in the direction of arrow A, or alternatively in the direction of arrow B. 
     The invention is also a method for drilling a well and for well intervention using the multipurpose system  8  on a pivoting, slidable cantilever  10  on a platform to drill a well  44  and to perform well intervention operations. The pivoting, slidable cantilever  10  is adapted to pivot and slide along an x-y axis. The method begins by pulling a completion tubing  31  out of the well  44 , forming segments  33  from the completion tubing pulled from the well  44 , setting back the segments  33  into the storage area  29  on the cantilever  10 , and running the coiled tubulars  40  into the well  44 . 
     The method continues by removing used completion equipment in the well  44  and preparing the well  44  for new completion equipment with the coiled tubulars  40 . While preparing the well  44  for the new completion equipment, segments of new completion tubing are pulled from the storage area  29  and the segments of new completion tubing are broke into individual joints. The individual joints are, then, removed from the pivoting, slidable cantilever  10 . 
     Next, the method entails running into the well  44  with coiled tubulars  40  and installing the new completion equipment  204 . While installing the new completion equipment in the well  44 , the segments of new completion tubing  202  are built from individual joints and the segments of new completion tubing  202  are set in the storage area  29 . The method ends by running the segments of new completion tubing  202  and the new completion equipment  204  into the well  44 . 
     The invention is also a method for drilling a well using a multipurpose system  8  on a pivoting, slidable cantilever  10  on a platform to drill a well and to perform well intervention operations. Again, the pivoting, slidable cantilever  10  is adapted to pivot and slide along an x-y axis  78 ,  79 . The method begins by running casing  97  directly into the well  44  from the storage area  29 . When the casing  97  is in the well  44 , a drilling assembly  96  is run on a hoisting cable  26   98  and latching into the casing  97 . 
     Next, the method entails connecting a top drive  70  to the casing  97  and drilling the well  44 . After drilling the well  44  to a casing  97  setting depth, a hoisting cable  26  is run into the well  44  and the drilling assembly  96  is retrieved. The method continues by cementing the casing  97  in the well  44 , running the coiled tubulars  40  into the well  44  and the drilling assembly  96 , drilling a production well section  200  and removing the drilling assembly  96  from the well  44  using the coiled tubulars  40 , and installing the well  44  completion with the coiled tubulars  40 . 
     While drilling the production well section  200  and installing the well  44  completion with coiled tubulars  40 , segments of new completion tubing  202  and new completion equipment  204  are built and the segments of new completion tubing  202  and the new completion equipment  204  are placed into the storage area  29 . The method ends by running the segments of new completion tubing  202  and the new completion equipment  204  into the well  44 . 
     In an alternative embodiment, the method can further include the step of running casing  97  directly into the well  44  from the storage device  28 . The methods can also entail the step of lifting the storage device  28  filled with casing  97  to the vertical position in the storage area  29 . The methods can be adapted to allow multiple hole sections to be drilled. 
     The step of connecting a top drive  70  to the casing  97  and drilling a production well section  200  can use at least one casing segment  206  pulled directly from the storage device  28 . The new completion tubing  202  can be run directly from the storage device  28  and The new completion tubing  202  can also be run directly from the vertical storage device  28 . 
     The step of running casing  97  directly into the well  44  from the storage device  28  can use using the racking arm  32 . Also, the step of building the segments of new completion tubing  202  and the new completion equipment  204  can use a crane  58 , a plurality of tubular containers  62 , a lifting table  64 , a makeup/breakout device  66 , and combinations thereof. 
     The storage area  29  can also be used for the horizontal storing of tubulars, segments, and completion equipment. 
     In another embodiment, the step of running the segments of new completion tubing  202  and the new completion equipment  204  into the well  44  can be performed using the trolley  22  which centered over the well  44  in its first position  81 . 
     The plurality of reels, plurality of storage areas, and/or plurality of splittable block can be used with any of the methods. 
     The invention is also method for using a pivoting, slidable cantilever  10  on a jack-up rig. The method involves moving the jack up rig to a well, moving the legs of the jack up rig enabling the legs to engage the sea bottom, and preloading the jack up rig and jacking the rig to the correct height above the water surface. The method ends by skidding a rotating pivotable cantilever  10  to a position over the side of the jack-up rig, moving the rotating pivotable cantilever  10  directly over the well  44 , and, then, initiating operation of the cantilever  10  using the multipurpose system  8 . 
     In an alternative embodiment, it is contemplated that one trolley system could be used with the invention which performs both the functions of the trolley  22  and the retractable trolley  46 . 
     The foregoing disclosure and description of the invention are illustrative and explanatory thereof and various changes in the method and system and in the size, shape and materials, as well as in the details of the illustrated construction, may be made within the scope of the claims without departing from the spirit of the invention.