Abstract:
The present invention relates to a method and apparatus for cleaning an oil and gas well riser section or assembly on location offshore that includes a larger diameter central pipe and a plurality of smaller diameter pipes that are spaced radially away from the central larger diameter pipe. Even more particularly, the present invention relates to an improved method and apparatus for cleaning oil and gas well riser sections wherein a specially configured cap or pair of caps are fitted to the ends of the riser which enable pressure washing cleaning tools (or a camera) to be inserted into and through a selected one of the pipes including either a smaller diameter of the pipes or the central larger diameter pipe and wherein the cap continuously collects spent cleaning fluid and debris, allowing the cleaning process to be done on location without transporting the riser section back onshore.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     Incorporated herein by reference are U.S. Provisional Patent Application No. 62/068,441, filed 24 Oct. 2014; U.S. Provisional Patent Application No. 62/164,978, filed 21 May 2015; U.S. Provisional Patent Application No. 62/191,991, filed on 13 Jul. 2015; and, US Provisional Patent Application No. 62/245,697, filed 23 Oct. 2015. Priority of U.S. Provisional Patent Application No. 62/068,441, filed 24 Oct. 2014; U.S. Provisional Patent Application No. 62/164,978, filed 21 May 2015; U.S. Provisional Patent Application No. 62/191,991, filed on 13 Jul. 2015; and, U.S. Provisional Patent Application No. 62/245,697, filed 23 Oct. 2015, is hereby claimed. 
    
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not applicable 
     REFERENCE TO A “MICROFICHE APPENDIX” 
     Not applicable 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to the cleaning of oil and gas well riser sections or assemblies. More particularly, the present invention relates to a method and apparatus for cleaning an oil and gas well riser section or assembly on location offshore that includes a larger diameter central pipe and a plurality of smaller diameter pipes that are spaced radially away from the central larger diameter pipe. Even more particularly, the present invention relates to an improved method and apparatus for cleaning oil and gas well riser sections wherein a specially configured cap or pair of caps are fitted to the ends of the riser which enable pressure washing cleaning tools (or a camera) to be inserted into and through a selected one of the pipes including either a smaller diameter of the pipes or the central larger diameter pipe and wherein the cap continuously collects spent cleaning fluid and debris, allowing the cleaning process to be done on location without transporting the riser section back onshore. 
     2. General Background of the Invention 
     Oil and gas well riser sections typically include a central larger diameter pipe or tubular member that is surrounded by a plurality of three or four or more smaller diameter pipes held in spaced relation to the central pipe with plates or flanges. Flanges are provided at each end of the riser assembly or riser section. These flanges include openings that communicate with the bore or bores of the smaller diameter pipes. The flange has a central opening that communicates with the bore of the central larger diameter pipe. 
     In order to clean these pipe sections, it is necessary to remove rust, scale, debris, chemical deposits and the like from both the inner larger diameter pipe section bore as well as the smaller outer or peripherally placed pipe section bores. In order to avoid contamination, this cleaning process has been done onshore by removing and transporting the riser pipe sections from the offshore well, to an onshore cleaning site. Newer cleaning methods move the cleaning process offshore allowing the risers to be cleaned without removing them from the well. These methods require additional considerations to avoid having the removed rust, scale, debris, and chemical deposits be washed into the ocean. Additionally, there is a need to decrease the footprint of the machinery used in the cleaning process allowing it to be used offshore. There is also a need to speed up the cleaning process in order to make it more economical and efficient than removing the risers for cleaning. 
     BRIEF SUMMARY OF THE INVENTION 
     Applicant has improved on the method of cleaning risers by lowering the footprint and speeding up the cleaning process. 
     Because we are cleaning in multiple holes of the riser, possibly from each end simultaneously, our fabricators have designed a spool basket that holds 2 pneumatic feeders and 2 reels that coordinate with each respective feeder. This basket can also be adapted to hold 4 feeders and 4 reels by adding additional boxes and reels on top of the 2 initial boxes and reels. Additional boxes and reels could be added in the same manner allowing for multiple cleaning tools without taking up a larger footprint. 
     The reels hold the high-pressure water lines, so the lines won&#39;t cover much deck space lying on the ground 
     Our fabricators have also improved upon the original control panel so that the improved control panel can control multiple feeders at once. Additionally, the control panel now can be placed right next to the Spool Basket, again, lowering the footprint. Our Spool Basket is fully automated, eliminating the need for a crew member to take up space near the caps. The output of water for 4 tools being run simultaneously is 15 gpm for the larger ID holes; 8 gpm for the choke, kill and boost lines; total gpm is 39; and total time to clean is consistently no more than 15 minutes. 
     The present invention improves upon the cleaning process of oil and gas well riser sections in speeding up the cleaning process and reducing the footprint of the cleaning equipment, which allows the cleaning process to take place on location rather than transporting the riser pipes onshore for cleaning. 
     The present invention thus provides a method and apparatus for cleaning oil and gas well riser sections wherein the riser section includes a central larger diameter pipe or tubular member having a flow bore and a plurality of smaller diameter pipes or tubular members that are preferably connected to the central larger diameter tubular member with flanges or spacers. Each of the smaller diameter tubular members has a flow bore. 
     The method includes placing a first cap or fitting on one end portion of the riser section. The fitting preferably covers an end of the larger diameter tubular member as well as the ends of the smaller diameter tubular members. The fitting preferably has multiple openings including one or more centrally located openings and a plurality of circumferentially spaced apart outer openings that are each spaced radially away from the one or more centrally located openings. The fitting can include a cylindrically shaped portion and a circular portion that is preferably joined to cylindrically shaped portion. A flexible sealing member preferably helps join the cap or fitting to an end of the riser assembly. 
     In a preferred embodiment, a similar cap is also secured to the opposite side of the pipe to be cleaned, allowing for cleaning to take place in both directions simultaneously while also collecting the debris. 
     The method includes inserting a first cleaning tool through the centrally located opening and into the larger diameter tubular member. The cleaning tool includes a pressure washing tool that cleans the inside surface of the larger diameter tubular member. A cable preferably supplies fluid under pressure to the first cleaning tool. 
     The method preferably includes the inserting of a second cleaning tool through one or more of the outer or peripherally placed openings and into one of the smaller diameter tubular members. The smaller diameter tubular members are cleaned with a second pressure washing tool that preferably cleans the inside surface of the smaller diameter tubular member or members, one after the other. In preferred embodiments, additional smaller diameter cleaning tools may also be used in the other smaller diameter tubular members simultaneously. 
     The method preferably includes the suction of fluid from the cleaning operations via a fitting or discharge that is preferably placed at a lower end portion of the fitting so that gravity flow can remove such cleaning fluid on a continuous basis. 
     The outer openings are preferably positioned along a curved line that is radially spaced outwardly of the centrally located opening or openings, the curved line traversing each of the outer tubular members. 
     In one embodiment, each centrally located opening is generally aligned with the bore of the larger diameter tubular member. 
     In one embodiment, one or more outer opening are generally aligned with the bore of a smaller diameter tubular member. 
     In one embodiment, the riser section or assembly has one end portion with an annular flange, each tubular member connected to the flange and the fitting preferably attaches to the annular flange. 
     In one embodiment, the flange has an outer diameter and the fitting has a peripheral skirt with a seal having a diameter that is about equal to the flange outer diameter. Further, the method preferably includes attaching the fitting at the peripheral skirt to the annular flange. 
     In one embodiment, there are two caps or fittings, each preferably having a fitting being attached to each end portion of the riser section or assembly. In this embodiment, the cleaning tools may all be fed into the bores from the same end, or, alternatively, one or more cleaning tools can be fed into the pipe from one end, while one or more additional cleaning tools are fed into different bores from the opposite end allowing cleaning to take place in both directions simultaneously. 
     In one embodiment, a suction is applied to each of the caps or fittings to subject all flow bores of the riser section to a vacuum during cleaning operations. Preferably, the vacuum at least partially contributes to securing the caps or fittings to the riser section. 
     In one embodiment, there are at least three outer openings. 
     In one embodiment, there are between two and twenty outer openings. 
     In one embodiment, the outer openings are preferably arranged in a circle. 
     In one embodiment, some of the outer openings are aligned with a smaller diameter tubular member bore and some of the outer openings are not aligned with a smaller diameter tubular member bore. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       For a further understanding of the nature, objects, and advantages of the present invention, reference should be had to the following detailed description, read in conjunction with the following drawings, wherein like reference numerals denote like elements and wherein: 
         FIG. 1  is a schematic of a preferred embodiment of the method and apparatuses of the present invention with the cleaning tool out of the pipe; 
         FIG. 2  is a schematic of a preferred embodiment of the method and apparatuses of the present invention with the cleaning tool in the pipe; 
         FIG. 3  is a close up side view of a preferred embodiment of the apparatus of the present invention with a cut-away showing the cleaning tool; 
         FIG. 4  is a close up front view of a preferred embodiment of an end cap of the present invention in place on a pipe with a cut-away showing the cleaning tool; 
         FIG. 5  is a close up front view of a preferred embodiment of an end cap of the present invention in place on a pipe; 
         FIG. 6  is an exploded view of a preferred embodiment of the end cap, pipe, and drain pan of the present invention; 
         FIG. 7  is a perspective view of a preferred embodiment of the cleaning tool of the present invention; 
         FIG. 8  is a perspective view of a preferred embodiment of the spool basket of the present invention; 
         FIG. 9  is an interior perspective view of a preferred embodiment of the cap of the present invention; 
         FIG. 10  is a perspective view of a preferred embodiment of the present invention; 
         FIG. 11  is a partial perspective view of a preferred embodiment of the present invention; 
         FIG. 12  is an interior perspective view of a preferred embodiment of the cap of the present invention; 
         FIG. 13  is a perspective view of a preferred embodiment of the present invention; and, 
         FIG. 14  is a top view of a preferred embodiment of the control panel of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Riser cleaning apparatus  10  is used to clean a riser assembly such as the riser assembly  11  shown in the drawings. Such a riser assembly  11  has a first end portion  12  and second end portion  13 . Either or both of the end portions  12 ,  13  of the riser assembly  11  can be provided with an annular flange  14 . The riser assembly  11  typically includes a larger diameter pipe or tubular member  15  surrounded by multiple smaller diameter pipes or tubular members  16 . 
     The larger diameter pipe  15  has a pipe bore  17  of larger diameter. The smaller diameter pipes  16  each have a pipe bore  18  of smaller diameter. A flange  14  (not shown), preferably an annular flange, can be a part of a riser assembly  11 . In the flange  14 , there are openings  20  that do not align with a particular smaller diameter pipe  16 . During cleaning of such a flange  14 , plugs  21  or  22  (not shown) may be used to block the openings  20  so that fluid is not leaked through the openings  20 . The riser assembly  11  can include an insulation layer or protective covering or coating  23 . 
     The cleaning tool apparatus  10  of the present invention and the method of the present invention preferably employ one or more caps, fittings or shrouds  25 . These caps, fittings or shrouds can be placed on one end portion  12  of the riser assembly  11  or on both end portions  12 ,  13  of the riser assembly  11 . 
     Each cap, fitting or shroud  25  preferably includes a cylindrical section  26 , a circular wall  27 , and a concave portion or cavity  24 . Wall  27  can be welded to cylindrical section  26 . The cylindrical section  26  has an inner surface  28  and an outer surface  29 . The circular wall has an inner surface  30  and an outer surface  31 . 
     A gasket or seal  32  can be attached to cylindrical section  26 . The gasket or seal  32  can be attached to the cylindrical section  26  using band  33  and fasteners such as rivets  34 . Straps  51  can be used to hold each cap, fitting or shroud to a selected end portion  12 ,  13  of a riser assembly  11 . One or more handles  35  can be attached (for example, welded) to cylindrical section  26  of cap or shroud  25 . In one embodiment (not shown), a rope such as a wire rope is removably attached to the outer surface  29  in a manner to axially support the lifting of the cap  25 . 
     In a preferred embodiment, the circular wall  27  is provided with a plurality of openings as shown in  FIGS. 4 and 6 . These openings include central opening  36  and a plurality of peripheral openings  39 . Each opening  36 ,  39  can be fitted with a flange  37  and a seal  38  (not shown). In one embodiment, the flange  37  is preferably bolted to the circular wall  27  with fasteners, thus sandwiching the seal  38  in between the flange  37  and the circular wall  27  (not shown). 
     Each peripheral opening  39  is preferably fitted with a flange  40  and can include a seal  38  as with the central opening  36  (not shown). 
     A hose  43  supplies pressurized fluid to cleaning tool  10 . The seal  38  can have a small opening at  41  which allows insertion of the cleaning tool  10  and its pressurized hose  43  from the outer surface  31  of circular wall  27  to the inner surface  30  of circular wall  27 , thus gaining access to the bore  17  or  18  of a selected larger diameter pipe  15  or smaller diameter  16  to be cleaned. 
     A hose feed device  44 , such as AutoBox by StoneAge®, Model No. ABX-500, can be used to feed hose  43  into the selected bore  17  or  18  during cleaning, thus advancing the cleaning tool into and along a selected bore  17  or  18  until all of it is cleaned (i.e., inside surface of pipe  15  or  16 ). 
     Each cap or shroud  25  has an outlet fitting  45  to which is attached a suction line  46 . The suction line  46  would be coupled to a pump or like device that pulls the suction on the outlet fitting  45  and thus the interior of the riser assembly  11 . In one embodiment, caps or fittings or shrouds  25  are placed at both ends of the riser assembly  11 , each of the caps or shrouds  25  having an outlet fitting  45  and a suction line  46 . In this fashion, the suction lines  46  and their pumps assist in holding the caps or shrouds  25  to the riser assembly  11  by subjecting the entire interior of the riser assembly  11  to a vacuum. Hoses  47  (not shown) can be attached to each flange  37 ,  40 . Such hoses  47  can be L-shaped and flexible. Hoses  47  discourage leakage of cleaning fluid from cap or fitting  25 . 
     Once cleaning is finished, a camera or like device can be used for inspecting the bores  17  or  18  (not shown). A camera line  49  can be provided as well as a camera feed device  50  for inserting the camera into a selected bore  17  or  18  (not shown). 
     Whereas Applicant, has cleaned risers by sending a high pressure cleaning tool down only one of the holes, in the riser, by way of a pneumatic feeder, in order for the offshore cleaning method to be economically superior to traditional onshore cleaning, the cleaning preferably occurs in a faster total time and cleaning equipment preferably takes up less total space on the well. To accomplish a faster cleaning time, the method of the present invention includes the option of cleaning all of the bores of a riser simultaneously. The largest bore  17  will preferably be cleaned by sending a high pressure cleaning tool  10 , by way of a pneumatic feeder  44  on one end  12 ,  13 . The 3 or 4 smaller bores  18  will preferably be cleaned in the same aforementioned fashion either on the same or on the opposite end of the riser simultaneously. 
     To accomplish this faster cleaning while still taking up a smaller total space on the well, novel and improved cleaning tools and assembly have been developed. On one or both ends  12 ,  13  of the riser pipe  11 , these cleaning tools  10  are being fed through the bores  17 ,  18  with high pressure water hoses preferably via pneumatic feeders  44 . 
     An improved control panel  60  shown in  FIGS. 1-2  is able to control, preferably pneumatically, multiple high pressure water hose feeders  44 . Control panel  60  as shown in  FIG. 1 , is controlling two feeders. However, the panel  60  may be adapted to control additional feeders  44 , preferably 4 or 6 feeders  44 . 
     To further decrease the total footprint of the cleaning tools, a novel spool or reel basket  70  as shown in  FIG. 8  has been developed. The spool basket  70  preferably has pad eyes for industrial transportation that hold the one or more pneumatic feeders  44  and one or more respective spools  72  of high pressure water hose  43 . The spool basket  70  of the present invention as shown in  FIG. 8  has an upper section  74  and lower section  75 . The lower section is adapted with housings  76  for the high pressure water lines  43 , power lines, and control lines for the pneumatic feeders  44 . As shown, the lower section has housings  76  for two feeders  44 ; however, additional housing can be added to accommodate additional feeders  44 . The upper section holds two pneumatic feeders  44  and two reels  72 , the reels coordinate with each respective feeder  44 . However, the basket  70  can be adapted to hold more feeders  44  and spools  72 . Preferably, additional feeders  44  and spools  72  would be stored on top of the feeders  44  and spools  72  shown so that the total footprint of the equipment is not increased. 
     In a preferred embodiment, control panel  60  is preferably positioned to reduce the footprint. For example, control panel  60  may be positioned next to the spool basket  70 . 
     In one embodiment, the output of water for 4 tools being run simultaneously is preferably 15 gallons per minute for the larger bore holes  16 , and 8 gallons per minute for the choke, kill and boost lines. 
     In one embodiment, the output of water for 4 tools being run simultaneously is preferably 39 gallons per minute. 
     In one embodiment, the total time to clean is approximately 15 minutes. 
     The control panel  60  and spool basket  70  were invented for the purpose of controlling multiple high pressure water cleaning tools  10 , simultaneously with minimal man power and minimal human exposure to moving parts. 
     In a preferred method, there are two control panels  60  and two spool baskets  70 , with a spool basket  70  at each end of a riser  11 , and the two control panels  60  can be side by side on one end  12 ,  13  or remote from one another. Preferably, there is a separate human operator for each control panel  60 , though if they are side by side one human operator is preferably able to operate both. 
     In another preferred embodiment, the control panel  60  is adapted to control 4 or 6 feeders  44 , all of which are housed in one spool basket  70  as described above, at one end of the riser pipe  11 . 
     The cleaning method of the present invention preferably makes use of an improved pressure washing tool  10  that cleans the inside surface of the larger diameter tubular member  17  and other improved pressure washing tools  10  that clean the inside surface of the smaller diameter tubular members  18  simultaneously. A cable or hose  43  preferably supplies fluid under pressure to the cleaning tools  10 . 
     In a preferred embodiment, the pressure washing tool  10  of the cleaning method includes a head  80  connected to a tubular body  82 , and a support structure surrounding the tubular body  82 . The head  80  preferably includes at least one orifice  85 . The orifice(s)  85  of the head  80  preferably allow pressurized water to pass through during cleaning. In one embodiment (not shown), the head  80  also includes more than one opening along the same axis that preferably allows for a stabilizer bar to pass through the openings. In a preferred embodiment, the support structure is extensions  84  that extend radially from the tubular body  82  of the tool  10 . Preferably there are at least 3 extensions  84 . More preferably there are 4 extensions  84 . Most preferred, the extensions  84  have one or more wheels  86 , preferably two wheels  86  on each of four extensions  84 , as shown in  FIG. 7 . This design is preferable because the extensions stabilize the tool in the center of the line, and the wheels alleviated drag providing for a faster cleaning time. Additionally, wear and tear on the tool  10  is decreased, which lengthens the life of the tool  10 . In another embodiment, additional wheels may be added to the nose of the tool  10 , to alleviate dipping of the nose during cleaning. In another embodiment (not shown), the support structure is comprised of 3 or more leg-like extensions, the leg-like extensions having a proximal portion and distal portion, wherein the proximal portion extends radially out from the tool  10 , at an angle between 30 and 90 degrees from the tubular body, and wherein the distal portion is parallel to the inner wall of the bore  17 ,  18  to be cleaned. In this embodiment, the distal portion of the leg-like extension is equipped with one or more, preferably two, wheels that are adapted to roll along the inner wall of the bore  17 ,  18  to be cleaned. This embodiment may further include one or more wheels on the nose of the tool  10 . 
     Prior versions of a cleaning tool for riser pipes did not have wheels  86  or extensions  84 , which caused stripping of the tool. In those prior versions that did have extensions for support, the extensions were too short and allowed the nose of the tool to dip. Additionally, no wheels were provided which created significant drag in the riser that required more time and power to overcome. 
     In one embodiment of the present invention, the method of cleaning riser pipes is as follows: 
     1—Job Survey—
         All PPE (personal protective equipment) to be worn is as follows; Hardhat, Steel-toed Boots, Safety Glasses, Flame Resistant Clothing (FRC) [Either coveralls of separate shirt/pants combinations], and Orange Reflective Vests. Equipment Operators will wear specialized PPE for optimal safety protection. One or more operators or crewmembers will survey conditions and check for hazards to ensure a safe operation. Operators or crewmembers will place equipment in a manner that avoids trip hazards and other safety hazards.       

     2—Equipment Setup—
         A crewmember will begin running lines  43 ,  46 . The crewmember will connect a water line  43  from the pump (not shown) to a water line housing  76  on the Spool Basket  70 . The housing connects to a “Y” connection that routes the high pressure water to each spool  72 . Each spool  72  then connects to the feeder  44 . One crewmember will set up diaphragm pumps, preferably 2 pumps, one for each end of the risers  11 . Preferably, the diaphragm pumps are 2-inch pumps. The crewmember will then connect a discharge hose to the pump, preferably 2 hoses, also for each end of the risers. Preferably, the discharge hoses are 2-inch discharge hoses. The discharge hoses connect to the riser safety cap  25 , preferably by way of a 2-inch female camlock located at the bottom of the cap.   Crewmembers will set up and place the discharge containment system catch pan  55  so that no discharge spills on the rig floor.   A crewmember will measure the depth of the rubber seals on both ends of each riser  11 . Two markers will be placed on the lance-line signifying the corresponding depth of the rubber seals so as not to damage the rubber seals with, up to, 10,000 psi of water pressure.   The lance-lines  43  that coordinate with the one or more cleaning tools  10  will be threaded through the outside of the cap  25  inward, as shown in  FIGS. 2-4 . The lance-lines  43  will then be connected to the cleaning tools  10 . The crewmembers will then close the SafetyCAP™  25  over the OD of the riser  11  flange and secure it, preferably with a band clamp  33  as shown in  FIGS. 4-5 . (Installation of caps  25  on both ends is preferably identical.) On one end, crewmembers will rig up the cap  25 , a preferably 2-inch suction hose  46 , and the large and small cleaning tools  10  will be placed in their respective holes  15 ,  16 . The pump will have a rig-water line connected to it.   SafetyCAPs  25  are to be installed. Crewmembers will install SafetyCAPs  25  on both ends  12 ,  13 . On each end of the riser where they will secure the SafetyCAP  25  around the OD of the riser  11  flange with a band clamp/ratchet strap  51 / 33 . The suction hose  46  will be connected to the 2″ female Camlock  45  that is attached to the SafetyCAP™  25 . Any bolt-holes will be plugged up. The 2″ suction hose  46  will be connected to the 2″ diaphragm pump at the far end.       

     3—Operation—
         Once all components have all connections secured, and all SafetyCAPs are installed, one or more lance-lines  43  with their respective tools  10  will be cleaning from one or both ends  12 ,  13 .   The Control Panel  60  will actuate the feeders  44 . With the water pressure high, the feeders  44  will begin tripping the tools  10  down the length of the riser  11 . Once to the end of the riser  11 , the feeder  44  will be set in reverse and begin pulling the tools/lance-lines  10 / 43  back. This action will re-spool the lance-lines  43  onto the spools  72  in the spool basket  70 .   There are large tools  10  for large pipes  15  and small tools  10  for small pipes  16 . The orifice(s)  85  in the tool  10  are preferably pointed to grab directionally forward for a faster initial trip.
 
Novel Improvements to the Apparatuses Used in the Method of the Present Invention:
       

     Traditionally, a small cleaning tool, called a Banshee™, connected to a 6″ stinger, was used to clean small holes in risers because it was small enough to fit in the auxiliary lines. The Banshee™ was small enough to be stung into the rubber seals of the caps; however the life of the Banshee™&#39;s rotating mechanism was insufficient, and when rotating ceased, the tool would stripe interior surface area of auxiliary lines and the tool would bounce around on the inside of auxiliary lines. To improve on this, a slightly larger version of the Banshee™ called the Badger™ was developed. The Badger™ had a better rotating mechanism, so it was more dependable with no striping. Still, the Badger™ would eventually bounce around the inside of the lines, shortening the life of the tool. Our novel tool for cleaning small holes in risers improves even further on these two prior tools by adding centralizers or extensions  84 , preferably with wheels  86 , on the tail end of the tool  10 . These improvements stabilize the tool  10  in the center of the bore  18 , and alleviate drag providing for a faster cleaning time. Additionally, they lengthen the life of the tool. 
     A second novel cleaning tool  10  has been used for larger bore holes in the risers. The large tool is called a Raptor™. When in operation, the Raptor™ is connected to an 8″ stinger. The Raptor™&#39;s large size provided for a mostly adequate cleaning for the larger riser line. However, similarly to the problems with the original small tools, without centralizers, the Raptor™ striped the inside of the line, and, consequently, the Raptor™ also bounced around on the inside of the large line. 
     To eliminate these problems, centralizing fins have been added to the tool  10 , and wheels were added to the nose. The fins centralize the tool in action, so there is less bouncing, and the wheels on the nose help to alleviate the dipping. But, neither the fins nor the wheels completely prevent the tool&#39;s nose from dipping, which causes the tool to stripe. 
     Novel improvements include specially fabricated centralizers  84  with a longer and larger frame with wheels  86  have been added to the cleaning tool  10  to overcome the problems of the prior tools used. The wheels  86  alleviate drag. Additionally, the tool  10  is preferably machined with larger orifices  85 , and with at least four 15° fan tips to help eliminate striping and provide for uniformed cleaning. 
     Traditional control panels for riser cleaning operations have controls for only one feeder and reel and utilize a separate foot pedal. This Control Panel allowed the operator to control the feeder pneumatically from a distance; however, the design of the tool&#39;s footprint, although low, was not efficient in consolidating the hoses that connect to it. Additionally, the Control Panel could only handle connection to 1 feeder, which is insufficient for cleaning multiple riser lines simultaneously. Finally, the foot pedal, which when engaged, allowed the high pressure water to flow, was separate from the system. This was time consuming to set up and took up additional space on the well. 
     Improvements have been made so the preferred control panel  60  of the present invention allows for control of multiple feeders  44  and reels  72 . The control panel  60  consolidates the pneumatic hoses that connect to the feeder  44 . This Control Panel  60  has the capabilities of controlling more than one feeder  44  simultaneously. In a preferred embodiment, shown in the figures, 2 feeders  44  are controlled simultaneously. In another embodiment, 4 feeders  44  are controlled simultaneously from the Control Panel  60 . Additional feeders may also be added. This Control Panel  60  is smaller, which cuts our footprint from older control panels in half. Additionally, this improved Control Panel  60  incorporates the foot pedal into the panel board and is controllable by a toggle switch, further reducing the footprint of the equipment needed for the method. 
     The feeder  44  used in the method of the present invention is preferably controlled pneumatically. The feeder  44  clamps down on the high-pressure water lines (lance lines)  43 . When actuated forward or backward, the lance line  43  will move forward and backward. This motion allows us to control the tripping of the lance line  43  and corresponding cleaning tool  10  down the length of the riser  11 . The pneumatic feeder  44  allows the operator to trip the lance line  43  forward and backward in the riser  11 , and it is light in weight and portable. However, there is no way to organize and consolidate the air hoses and lance lines to lessen the footprint, especially where multiple lines are to be operated simultaneously, requiring multiple feeders. This would create multiple tripping hazards and more time than would be allotted to set up. Thus, we created the spool basket  70  of the present invention. In a preferred embodiment, the novel Spool Basket  70  is a portable enclosed tool box with 2 or more feeders  44 , 2 or more spools  72  with lance lines  43  corresponding to the feeders  44 , and connections or housings  76  for pneumatic hoses and high pressure water lines to connect to their respective tools. This basket  70  is comprised of 2 or more feeders  44 , 2 or more lance line spools  72 , and housings  76  for pneumatic and water hoses lessening the footprint, and eliminating a number of tripping hazards. The Spool Basket  70  preferably has wheels (not shown), making it extremely portable. And, the feeders  44  are positioned for ease of lance line  43  access to entry ports  36 ,  39  on the cap(s)  25 . 
     Safety caps  25  are used on the ends of the riser  11  to contain discharge while maintaining the ability to stab the lance line  43  through a small hole  36 ,  39  in the cap  25 . The cap  25  is preferably reinforced with aluminum, and rubber tubes are preferably placed on the interior of the stabbing holes to eliminate back pressured discharge. Multiple stabbing holes  36 ,  39  allow for multiple tools  10  and lines  43  to work in the cap  25  simultaneously. Finally, the addition of a discharge line  46 , repositioned at a 90° angle allows for discharge back pressured waste 
     A second safety cap  25  allows for capture of discharge, discharge pump-off, and cleaning from the opposite side of the riser  11 . Preferably, a cavity is added for the large bore  17  so that a cleaning tool  10  can fit in and properly flush out the discharge. 
     The following is a list of parts and materials suitable for use in the present invention: 
     
       
         
               
             
               
               
             
           
               
                   
               
               
                 PARTS LIST: 
               
             
          
           
               
                 PART NUMBER 
                 DESCRIPTION 
               
               
                   
               
               
                 10 
                 riser cleaning apparatus 
               
               
                 11 
                 riser assembly 
               
               
                   11A 
                 riser assembly 
               
               
                 12 
                 first end portion 
               
               
                 13 
                 second end portion 
               
               
                 14 
                 annular flange 
               
               
                 15 
                 larger diameter pipe 
               
               
                 16 
                 smaller diameter pipe 
               
               
                 17 
                 pipe bore (larger diameter) 
               
               
                 18 
                 pipe bore (smaller diameter) 
               
               
                 20 
                 opening 
               
               
                 21 
                 plug 
               
               
                 22 
                 plug 
               
               
                 23 
                 insulation/protective covering 
               
               
                 24 
                 concave portion/cavity 
               
               
                 25 
                 cap/shroud/fitting 
               
               
                 26 
                 cylindrical section 
               
               
                 27 
                 circular wall 
               
               
                 28 
                 inner surface 
               
               
                 29 
                 outer surface 
               
               
                 30 
                 inner surface 
               
               
                 31 
                 outer surface 
               
               
                 32 
                 gasket/seal 
               
               
                 33 
                 band 
               
               
                 34 
                 fastener/rivet 
               
               
                 35 
                 handle 
               
               
                 36 
                 central opening 
               
               
                 37 
                 flange 
               
               
                 38 
                 seal 
               
               
                 39 
                 peripheral opening 
               
               
                 40 
                 flange 
               
               
                 41 
                 opening 
               
               
                 43 
                 hose 
               
               
                 44 
                 hose feed device 
               
               
                 45 
                 outlet fitting 
               
               
                 46 
                 suction line 
               
               
                 47 
                 hose 
               
               
                 49 
                 camera line 
               
               
                 50 
                 camera feed device 
               
               
                 51 
                 strap 
               
               
                 55 
                 catch pan 
               
               
                 60 
                 control panel 
               
               
                 70 
                 spool basket 
               
               
                 72 
                 reels or spools 
               
               
                 74 
                 upper section of spool basket 
               
               
                 75 
                 lower section of spool basket 
               
               
                 76 
                 housings 
               
               
                 80 
                 nozzle of cleaning tool 
               
               
                 82 
                 tubular member of cleaning tool 
               
               
                 84 
                 extensions 
               
               
                 85 
                 orifice(s) of cleaning tool 
               
               
                 86 
                 wheels 
               
               
                   
               
             
          
         
       
     
     All measurements disclosed herein are at standard temperature and pressure, at sea level on Earth, unless indicated otherwise. All materials used or intended to be used in a human being are biocompatible, unless indicated otherwise. 
     The foregoing embodiments are presented by way of example only; the scope of the present invention is to be limited only by the following claims.