Patent Publication Number: US-10322439-B2

Title: Dual nozzle jetting tool for tank cleaning and related methods

Description:
BACKGROUND 
     Embodiments disclosed herein relate generally to fluid storage tanks. In particular, embodiments disclosed herein relate to apparatus and methods for cleaning fluid storage tanks. 
     Fluid storage tanks are used the world over in refineries, terminals, and tank farms for storing oil products. The storage tanks are subjected to periodical cleaning operations due to sludge accumulation, inspection, and maintenance. Sludge accumulation occurs due to the slow sedimentation of high gravity petroleum products near or at the bottom of the fluid storage tanks, and may lead to various problems, including loss of operational capacity of the storage tanks, loss of working time, and/or acceleration of corrosion occurring within the storage tanks. Further, traditional cleaning systems often involve the manual removal of the accumulated sludge, which may also lead to various problems, including increased health and safety risks to the cleaning personnel, high volumes of sludge waste that may be disposed of, and prolonged shutdown times of the storage tanks. 
     Accordingly, an apparatus and method that may minimize the undesired effects from the traditional cleaning systems, such as by minimizing the volume of the final waste to be disposed of and/or minimizing the exposure of personnel to the interior of the storage tanks is described. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1A  shows a perspective view of a manway of a storage tank in accordance with one or more embodiments of the present disclosure. 
         FIG. 1B  shows a perspective view of a manhole adaptor in accordance with one or more embodiments of the present disclosure. 
         FIG. 2A  shows a cutaway view of a cutting tool in accordance with one or more embodiments of the present disclosure. 
         FIG. 2B  shows a perspective view of a cutting tool in accordance with one or more embodiments of the present disclosure. 
         FIG. 3A  shows a perspective view of a jetting tool system secured within an alignment system in accordance with one or more embodiments of the present disclosure. 
         FIG. 3B  shows a perspective view of a jetting tool system inserted within a manhole adaptor in accordance with one or more embodiments of the present disclosure. 
         FIG. 3C  shows an above perspective view of a jetting tool system inserted within a manhole adaptor in accordance with one or more embodiments of the present disclosure. 
         FIG. 4  shows an above view of a storage tank having multiple jetting tool systems installed thereon in accordance with one or more embodiments of the present disclosure. 
         FIG. 5A  shows an interior view of a storage tank before separation in accordance with one or more embodiments of the present disclosure. 
         FIG. 5B  shows an interior view of a storage tank after separation in accordance with one or more embodiments of the present disclosure. 
         FIG. 6  shows a cutaway view of a storage tank having a jetting tool system installed thereon in accordance with one or more embodiments of the present disclosure. 
         FIG. 7A  shows a perspective view of a jetting tool system in accordance with one or more embodiments of the present disclosure. 
         FIG. 7B  shows a side cutaway view of a jetting tool system in accordance with one or more embodiments of the present disclosure. 
         FIG. 7C  shows an above cutaway view of a jetting tool system in accordance with one or more embodiments of the present disclosure. 
         FIG. 7D  shows an exploded view of a jetting tool system in accordance with one or more embodiments of the present disclosure. 
         FIG. 7E  shows a perspective view of a jetting tool in accordance with one or more embodiments of the present disclosure. 
         FIG. 7F  shows a perspective view of a jetting tool in accordance with one or more embodiments of the present disclosure. 
         FIG. 7G  shows an above cutaway view of a jetting tool in accordance with one or more embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The following is directed to various embodiments of the disclosure. Although one or more of these embodiments may be preferred, the embodiments disclosed should not be interpreted, or otherwise used, as limiting the scope of the disclosure, including the claims. In addition, those having ordinary skill in the art will appreciate that the following description has broad application, and the discussion of any embodiment is not intended to suggest that the scope of the disclosure, including the claims, is limited to that embodiment. 
     Certain terms are used throughout the following description and claims refer to particular features or components. As those having ordinary skill in the art will appreciate, different persons may refer to the same feature or component by different names. This document does not intend to distinguish between components or features that differ in name but not function. The figures are not necessarily to scale. Certain features and components herein may be shown exaggerated in scale or in somewhat schematic form and some details of conventional elements may not be shown in interest of clarity and conciseness. 
     In the following discussion and in the claims, the terms “including” and “comprising” are used in an open-ended fashion, and thus should be interpreted to mean “including, but not limited to . . . . ” Also, the term “couple” or “couples” is intended to mean either an indirect or direct connection. Thus, if a first component is coupled to a second component, that connection may be through a direct connection, or through an indirect connection via other components, devices, and connections. Further, the terms “axial” and “axially” generally mean along or parallel to a central or longitudinal axis, while the terms “radial” and “radially” generally mean perpendicular to a central longitudinal axis. Additionally, directional terms, such as “above,” “below,” “upper,” “lower,” “horizontal,” “vertical,” etc., are used for convenience in referring to the accompanying drawings, and the terms are not meant to limit the disclosure. 
     In one aspect, embodiments disclosed herein relate to a jetting tool that may be disposed within and used to clean a storage tank that stores oil products. Prior to inserting the jetting tool, a sludge mapping and characterization process may be performed, which may include thermographic, density, and/or viscosity profiles that are taken to determine the quantity of sludge in the storage tank. In addition, characterization processes may be performed, including sampling, density and viscosity profiles, and analysis of the sludge to allow for an optimal tank cleaning strategy to be developed. 
     Referring initially to  FIGS. 1A and 1B , perspective views of a storage tank manway  50  (i.e., an opening through which access to the internal volume of a storage tank  40  is provided) and a manhole adaptor  60  in accordance with one or more embodiments of the present disclosure are shown. After mapping and characterization processes have been performed, and a strategy has been determined for cleaning the storage tank, a process known as “cold tapping” may be performed. This process involves preparation prior to having a jetting tool be inserted and disposed within the storage tank  40 . As shown, the manway  50  has a cover  52  (e.g., a plate) secured to the storage tank with multiple fasteners (e.g., bolts). Without opening the tank, several bolts may be removed from the manway  50 , while still leaving multiple bolts  51  in place to secure the cover  52  to the manway  50 . Those skilled in the art will appreciate that while eight bolts remain in this example, any number of bolts may remain in other examples. 
     Next, the manhole adaptor  60  having a central bore  61 , and a gasket (not shown) to engage the manway  50 , is placed over the manway  50  and secured thereto by way of larger holes in the manhole adaptor flange that fit over the remaining manway cover bolts  51 . The manhole adaptor  60  includes a front valve  62  and two side valves  63  and  64  installed thereon. In this embodiment, the front valve  62  may be about 16 inches (40.6 cm), the side valve  63  may be about 10 inches (25.4 cm), and the side valve  64  may be about 6 inches (15.2 cm). However, those having ordinary skill in the art will appreciate that the size and configuration of the manhole adaptor may vary, such as to include more or less valves as desired, or valves of different sizes, without departing from the scope of the present disclosure. After installation of the manhole adaptor  60 , the valves  62 ,  63 , and  64  may be closed and the manhole adaptor  60  may be pressure tested. 
     Referring now to  FIGS. 2A and 2B , multiple views of a cold-tapping device  70  in accordance with one or more embodiments of the present disclosure are shown.  FIG. 2A  provides a cutaway view of the cold-tapping device  70  before use, and  FIG. 2B  provides a perspective view of the cold-tapping device  70  while used to cut into the manway cover  52 . Following installation of the manhole adaptor  60 , the cold-tapping device  70  may be secured to the manhole adaptor  60 , such as by bolting the cold-tapping device to the adaptor  60 . The cold-tapping device  70  may include a cutting head  72  that may move axially within and through the central bore  61  of the manhole adaptor  60 . As such, the front valve  62  of the manhole adaptor  60  may be open after the cold-tapping device  70  is installed, and the cutting head  72  may enter into and through the central bore  61  of the manhole adaptor  60 . The cutting head  72  may then cut into and through the manway cover  52 , thereby providing access inside the storage tank  40 . 
     Referring now to  FIGS. 3A, 3B, and 3C , multiple views of a jetting tool system  100  and an alignment system  80  in accordance with one or more embodiments of the present disclosure are shown.  FIG. 3A  provides a perspective view of the jetting tool system  100  secured within the alignment system  80  before installation and insertion within the manhole adaptor  60 , and  FIGS. 3B and 3C  provide perspective views of the jetting tool system  100  after being inserted within and secured to the manhole adaptor  60 . 
     After the cold-tapping device  70  cuts through the manway cover  52 , the cold-tapping device  70  may be removed such that an additional cylinder  76  having a central bore extending therethrough may be attached to the manhole adaptor  60 . In addition, as shown in  FIG. 3A , the jetting tool system  100  may be suspended within the alignment system  80  to be aligned with the cylinder  76 . After alignment, the jetting tool system  100 , discussed more below and having a jetting tool  110  coupled to an end thereof, may be inserted within the cylinder  76  such that the jetting tool  110  of the jetting tool system  100  is disposed within the storage tank  40  for the sludge removal operation, as shown in  FIGS. 3B and 3C . Further, one or more automated shut-off valves  78  may also be incorporated to control fluid flow through the manhole adaptor  60  and/or the jetting tool system  100 . 
     Once the jetting tool system  100  has been properly secured within the manhole adaptor  60 , the jetting tool system  100  may be used to circulate and separate sludge that has accumulated within the storage tank  40 . One or more jetting tool systems  100  may be installed with the storage tank  40 , as desired, such as depending on the size and shape of the storage tank, and/or the desired fluid circulation patterns within the storage tank  40 . For example, with reference to  FIG. 4 , the storage tank  40  includes three jetting tool systems  100  installed thereon, in which the jetting tool systems  100  may introduce fluid pressure to induce a clockwise fluid circulation pattern within the storage tank  40 . Those skilled in the art will appreciate that while three jetting tool systems are shown in this example, any number of jetting tool systems may be used in accordance with one or more embodiments disclosed herein. 
     Though details of the jetting tool system  100  are discussed further below, the jetting tool of the jetting tool system  100  may be movably disposed within the storage tank  40 . For example, the jetting tool of the jetting tool system  100  may be able to rotate within the tank  40 , such as being able to rotate vertically and/or horizontally within the tank  40 . In one embodiment, the jetting tool may be able to rotate by at least about 40 degrees vertically with respect to the tank  40  and rotate by at least about 180 degrees horizontally with respect to the tank  40 . As such, one having ordinary skill in the art will appreciate that a jetting tool system in accordance with the present disclosure may be able to induce multiple fluid circulation patterns within a storage tank. 
     While the one or more jetting tool systems  100  provide fluid pressure to induce a circulation pattern within the tank  40 , the jetting tool systems  100  may also introduce and disperse biosurfactants within the accumulated sludge of the storage tank  40 . For example, biosurfactants based on rhamnolipids RLL (α-L-rhamnopyranosyl-α-L-rhamnopyranosyl-β-hydroxydecano-il-β-hydroxydecanoate) and/or rhamnolipids RRLL (2-O-α-L-rhamnopyranosyl-α-L-rhamnopyranosyl-β-hydroxydecanoil-β-hydroxydecanoate) may be dispersed and circulated within the storage tank  40 . After introducing the biosurfactants into the storage tank  40  and circulating the contents within the storage tank  40 , the jetting tool systems  100  may then stop introducing fluid pressure into the tank  40  such that the contents within the tank  40  may settle therein. Particularly, during this settling step, the biosurfactants enable the sludge emulsion within the tank to separate into oil and water, with the solids from the sludge settling to the bottom of the tank  40 . For example, with reference to  FIGS. 5A and 5B , the tank  40  may have sludge S, comprising of sand and gravel mixed with oil and water, accumulated at the bottom thereof. Biosurfactants may then be introduced into the tank  40  and the contents circulated within the tank  40 , thereby causing the sludge S to separate and settle out into an oil layer O, a water layer W, and a solids layer So. In accordance with one or more embodiments of the present disclosure, the sludge may have up to 95% of the hydrocarbons removed and returned to the oil phase. 
     After circulation and separation of the sludge S within the tank  40 , the contents of the tank  40  may then be pumped out to one or more desired locations. For example, the oil layer O may be pumped out of the tank  40 , such as through the valve  64  (shown in  FIG. 1B ) of the manhole adaptor  60 , to a desired location, in which the quality of the oil may be monitored by a mobile lab. Further, the water layer W may be pumped out of the tank  40  and back to a waste water tank and/or another desired location, in which the quality of the water may also be monitored by the mobile lab. Furthermore, it should be noted that the biosurfactants may not have any substantial detrimental effect on the oil quality and/or the environment. 
     Once the oil and water phases have been pumped out of the tank  40 , the tank  40  may be put back into use and service, if desired. However, if the tank  40  is being cleaned for maintenance and/or inspection, then the tank  40  may be further cleaned to remove the solids layer So present within the tank  40 . In accordance with one or more embodiments of the present disclosure, the jetting tool system  100  with the jetting tool  110  may include two or more nozzles to expel fluid into the tank  40 , in which a first nozzle may be used to originally circulate and introduce biosurfactants into the contents of the tank  40 , and a second nozzle may be used for the additional cleaning stages and removal of the solid layer So within the tank  40 . As such, when cleaning the tank  40  to remove the solid layer So, the jetting tool system  100  may use the second nozzle to pump warm or hot water into the tank  40  for washing. The first nozzle and the second nozzle may be different from each other, such as by having the first nozzle larger or smaller in size than the second nozzle. The design and configuration of the dual nozzles will be discussed in more detail below. 
     For example, with reference to  FIG. 6 , washing water Wa may be pumped through the jetting tool system  100  and through the second nozzle of the jetting tool  110  into the tank  40  to wash the tank  40 . The washing water Wa, mixed with the solids So and any other contents remaining in the tank  40 , may then be pumped out of the tank  40 , such as to an external separation system. By pumping the washing water Wa into the tank  40  through the jetting tool  110 , this final washing step of the tank  40  may take place without having to open and/or enter the tank  40 . 
     In addition to washing the tank  40  to remove the solid layer So, a degassing step may take place to extract any undesired gas from the tank  40 . For example, in one embodiment, the NOGAS degassing method, commercially available from M-I, L.L.C., a Schlumberger Company, in Houston, Tex., may be used to degas the tank  40 . In such an embodiment, a pneumatic extractor may be used to draw gas from the tank  40  into a gas-scrubbing column  90  (shown in  FIG. 6 ) attached to the exterior of the tank  40 . In the column  90 , the gas may be neutralized with a nebulized spray of biotechnological and chemical products, such as LECS, also commercially available from M-I, L.L.C., and a gas monitoring system (not shown) may be installed at the top of the column  90  to monitor the quality of the gas released from the column  90 . 
     Additionally, the degassing chemicals may be introduced into the tank  40  through the jetting tool system  100 , such as by pumping the nebulized spray of the biotechnological and chemical products into the tank  40  through the second nozzle of the jetting tool  110 . Further, the tank  40  may be provided with a LECS VOC CONTROL system, also commercially available from M-I, L.L.C., a system that sprays a fine mist of surfactants, chelating agents, and/or nutrients onto the gas within the tank to neutralize any volatile organic compounds (VOC). The degassing step may be used to reduce the Lower Explosive Limits (LEL) to below 5 percent within the tank  40 . 
     Furthermore, if desired, personnel may then enter the tank  40  after the washing and degassing steps have taken place to perform a final cleaning step. The personnel may enter the tank  40  to remove any residual sludge and/or solids that may be collected within the tank  40 , such as by operating equipment that collects the residual sludge and/or solids and pumps these contents out of the tank  40 . 
     Referring now to  FIGS. 7A-7G , multiple views of a jetting tool system  100  in accordance with one or more embodiments of the present disclosure are shown. Specifically,  FIG. 7A  provides a perspective view of the jetting tool system  100  disposed within the additional cylinder  76 ,  FIG. 7B  provides a side cutaway view of the jetting tool system  100  within the additional cylinder  76 ,  FIG. 7C  provides an above cutaway view of the jetting tool system  100  within the additional cylinder  76 , and  FIG. 7D  provides an exploded view of the jetting tool system  100  with the additional cylinder  76 . Further,  FIGS. 7E and 7F  provide perspective views of the jetting tool  100  of the jetting tool system  100 , and  FIG. 7G  provides a cutaway above view of the jetting tool  100  of the jetting tool system  100 . 
     As shown within  FIGS. 7A-7D  specifically, the jetting tool system  100  may include a housing  102 , such as a cylindrical housing, having a first end  103  and a second end  104 . The housing  102  includes a flowline  105  extending therethrough, in which the flowline  105  may be used to provide pressurized fluid to the jetting tool  110  disposed at the first end  103  of the housing  102 . In addition to the flowline  105 , a flexible hose  106  may be disposed adjacent to the first end  103  of the housing  102  and may be coupled between the flowline  105  and the jetting tool  110 . The jetting tool  110  is movably attached to the first end  103  of the housing  102 . As such, the flexible hose  106  may be used to enable fluid flow through the flowline  105  and through the flexible hose  106  to the jetting tool  110 , even as the jetting tool  110  may be moving within the tank  40 . 
     With reference to  FIGS. 7A-7G , the jetting tool  110  may include a head  112  having a first nozzle  114  and a second nozzle  116 . The first nozzle  114  and the second nozzle  116  may be different sizes from each other, such as for use for different applications, in which the first nozzle  114  may be larger than the second nozzle  116 . Particularly, the orifice size of the first nozzle  114  may be larger than the orifice size of the second nozzle  116 . 
     Fluid received from the flowline  105  may be expelled through the first nozzle  114  and/or the second nozzle  116  of the head  112  of the jetting tool  110  and into a storage tank. For example, as discussed above, pressurized fluid to circulate the contents within a storage tank and/or introduce biosurfactants into a storage tank may be expelled through the first nozzle  114  of the jetting tool  110 , and washing water to wash away solids within a storage tank and/or introduce degassing chemicals into a storage tank may be expelled through the second nozzle  116  of the jetting tool  110 . 
     In one or more embodiments, multiple methods and/or configurations may be used to move between expelling fluid from the first nozzle and expelling fluid from the second nozzle. For example, in one embodiment to move between the first nozzle  114  and the second nozzle  116  of the jetting tool  110 , the head  112  of the jetting tool  110  may enable the first nozzle  114  and the second nozzle  116  to alternate and be rotated into and out of alignment, as desired, with a fluid supply line (i.e., flowline  105 ) extending through the jetting tool  110 . In such an embodiment, the first nozzle  114  and the second nozzle  116  may be rotatable and/or otherwise movable between each other such that one of the first nozzle  114  and the second nozzle  116  is moved into a “enabled” position, while the other of the first nozzle  114  and the second nozzle  116  is moved into a “disabled” position. In another embodiment, the head  112  of the jetting tool  110  may include one or more valves therein to selectively direct fluid between the first nozzle  114  and the second nozzle  116 . 
     For example, as shown specifically in  FIGS. 7E-7G , the second nozzle  116  may include a valve  118 , such as a hydraulic valve, that may be selectively opened and closed to direct fluid through the second nozzle  116 . As such, multiple valves may be included within a jetting tool of the present disclosure to selectively direct fluid therethrough. Further, the control of the fluid flow through the jetting tool may be manually operated and/or may be automated, such as by having controllers and/or actuators controlling the movement of the first nozzle and the second nozzle. Those having ordinary skill in the art, however, will appreciate that other mechanisms, components, and arrangements may be used to move between expelling fluid from the first nozzle and expelling fluid from the second nozzle without departing from the scope of the present disclosure. 
     As mentioned above, the jetting tool  110  may be movably attached to the first end  103  of the housing  102 . As such, the jetting tool  110  may be movably attached to the housing  102  such that the head  112  of the jetting tool  110 , including the first nozzle  114  and the second nozzle  116 , may be able to rotate both vertically and horizontally with respect to the housing  102 . More specifically, the head  112  of the jetting tool  110  may be able to rotate along a first plane extending vertically through the housing  102 , and also may be able to rotate along a second plane perpendicular to the first plane and extending horizontally with respect to the housing  102 . By enabling the head  112  of the jetting tool  110  to have multiple degrees of freedom in both the vertical and horizontal directions within a storage tank, the jetting tool  110  may be able to induce multiple fluid circulation patterns within the storage tank. Accordingly, in one embodiment, the head  112 , and therefore the first nozzle  114  and the second nozzle  116 , may be able to rotate by at least about 40 degrees vertically with respect to the housing  102  and the storage tank, and may be able to rotate by at least about 180 degrees horizontally with respect to the housing  102  and the storage tank. 
     Referring now specifically to  FIGS. 7E-7G , the jetting tool  110  may further include a support structure  120  and/or a gear assembly  122 . The support structure  120 , shown in this embodiment as a fork assembly having a pair of arms  121 , may be movably attached to the first end  103  of the housing  102 , thereby enabling the head  112  of the jetting tool  110  to rotate vertically with respect to the housing  102  and a storage tank. Further, the gear assembly  122 , shown in this embodiment as a gear box  123  engaging a gear  124  attached to the head  112 , may be coupled between the head  112  of the jetting tool  110  and the support structure  120  of the jetting tool  110 . The gear assembly  122  may enable the head  112  of the jetting tool  110  to rotate horizontally with respect to the housing  102  and a storage tank. As such, different components of the jetting tool  110  may be used to control different directions of movement of the jetting tool  110 . Those having ordinary skill in the art, however, will appreciate that other mechanisms, components, and arrangements may be used to enable movement of a jetting tool without departing from the scope of the present disclosure. 
     Further, to enable movement of the jetting tool  110  within a storage tank, the jetting tool system  100  may include an actuator assembly  130  coupled to the jetting tool  110  that may be used to control the movement of the jetting tool  110  with respect to the housing  102 . For example, as particularly shown in  FIG. 7D , the actuator assembly  130  may be disposed within the housing  102  and extend between the first end  103  and the second end  104  of the housing  102 . As such, the actuator assembly  130  may be used to control the vertical rotation and/or the horizontal rotation of the jetting tool  110  within a storage tank, as discussed above. Further, the actuator assembly  130  may be manually operated, such as by having personnel manually control the movement of the jetting tool  110  using the actuator assembly  130 , and/or the actuator assembly  130  may be automated, such as by having controllers and/or actuators controlling the movement of the jetting tool  110  using the actuator assembly  130 . 
     In this embodiment, the actuator assembly  130  may include a first link assembly  132  and a second link assembly  134 . The first link assembly  132  and the second link assembly  134  each include one or more links, such as one or more rods, stems, and/or pipes connected and/or coupled to each other, and extend between the first end  103  and the second end  104  of the housing  102 . The first link assembly  132  may be used to control vertical rotation of the head  112  of the jetting tool  110 , such as by having the first link assembly  132  coupled to the support structure  120  of the jetting tool  110 . Further, the second link assembly  134  may be used to control horizontal rotation of the head  112  of the jetting tool  110 , such as by having the second link assembly  134  coupled to the gear box  122  of the jetting tool  110 . The ends of the first link assembly  132  and the second link assembly  134  may also be accessible at the second end  104  of the housing  102  to enable convenient access to and control over the actuator assembly  130 . Those having ordinary skill in the art, however, will appreciate that other mechanisms, components, and arrangements, such as one or more hydraulic or pneumatic actuators (e.g., piston and rod assembly) and/or one or more electric actuators (e.g., a motor), may be used to enable movement of a jetting tool without departing from the scope of the present disclosure. For example, in one embodiment, one or more motors may be attached and/or coupled to the head of the jetting tool, in which a control unit may be used to control the one or motors to rotate the head in the vertical direction and/or the horizontal direction, as desired. 
     In one or more embodiments, a jetting tool system in accordance with the present disclosure may include and/or be used in conjunction with a data processing unit, a control unit, and/or one or more sensors configured to detect the state of the components used with a storage tank. For example, a sensor may be coupled to the jetting tool system to determine the position and the orientation of the jetting tool within the storage tank. Further, the data processing unit may be able to process data related to the state of the contents within the storage tank, such as determine an optimal or desired circulation pattern within the storage tank, and then the control unit may be used to control the movement of the jetting tool accordingly. As such, sensors, control units, data processing units, and/or any other electrical components may be used within the present disclosure for control or automization of the jetting tool system. 
     In one aspect, embodiments disclosed herein relate to a system to clean a tank that stores oil products. The system includes a housing having a first end and a second end, a flowline disposed within the housing and extending through the housing, and a jetting tool having a first nozzle and a second nozzle. The jetting tool is movably attached to the first end of the housing, and the jetting tool is configured to receive fluid from the flowline and expel the fluid through at least one of the first nozzle and the second nozzle of the jetting tool. 
     In another aspect, embodiments disclosed herein relate to a jetting tool configured to clean a tank that stores oil products. The jetting tool includes a head having a first nozzle and a second nozzle, a support structure configured to movably attach to an end of a housing extending into the tank such that the head rotates vertically with respect to the housing, and a gear assembly coupled between the head and the support structure such that the head of the jetting tool is configured to rotate horizontally with respect to the housing. 
     In another aspect, embodiments disclosed herein relate to a method to install a jetting tool within a tank that stores oil products. The method includes attaching the jetting tool having a head with a first nozzle and a second nozzle to a first end of a housing, fluidly coupling the jetting tool to a flowline extending through the housing such that fluid received within the flowline is configured to be expelled through at least one of the first nozzle and the second nozzle of the jetting tool, and inserting the first end of the housing with the jetting tool attached thereto into the tank such that the first nozzle and the second nozzle of the jetting tool is disposed within the tank. 
     In another aspect, embodiments disclosed herein relate to a method to clean a tank that stores oil products. The method includes inserting a jetting tool having a head with a first nozzle and a second nozzle within the tank, providing a first fluid to the jetting tool, expelling the first fluid into the tank through the first nozzle of the jetting tool, providing a second fluid to the jetting tool, and expelling the second fluid into the tank through the second nozzle of the jetting tool. 
     Other aspects and advantages exempwill be apparent from the following description and the appended claims. 
     Advantageously, embodiments of the present disclosure may provide a jetting tool and/or a jetting tool system that may be able to reduce the amount of time for cleaning a tank storing oil products. For example, the time to change the nozzles for one jetting tool may take up to 45 minutes or more, and most tanks have at least two jetting tools installed therewith. However, a jetting tool in accordance with the present disclosure may demand a matter of minutes to switch between nozzles, as the jetting tool is provided with multiple nozzles with the switching between the nozzles possibly even being automated. Further, embodiments of the present disclosure may provide a jetting tool and/or a jetting tool system that may be able to reduce the health and safety risks to the cleaning personnel. For example, personnel may no longer have to enter storage tanks at all, or will enter storage tanks during the final steps of the cleaning process, thereby limiting the cleaning personnel exposure to any volatile organic compounds, harmful gases, and/or other hazards common to the environment within a storage tank. 
     While the present disclosure has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments may be devised which do not depart from the scope of the disclosure as described herein. Accordingly, the scope of the disclosure should be limited by the attached claims.