A sectional panel tank comprises one or more side wads that are joined together in forming the sectional panel tank. One of the side wall comprises a first unit panel having a first extension at a first edge of the first unit panel and a second unit panel having a second extension at a second edge of the second unit panel. By combing the second extension to the second extension, the second unit panel is joined to the first unit panel for providing a continuous surface of the side wall. No gasket is needed between the first extension and the second extension. A method of making the sectional panel tank is also disclosed. A method of making prefabricated unit panels with lining sheets is further disclosed for the sectional panel tank.

A transportable slurry box includes a structure comprising an interior to contain a cuttings slurry; a door movable between a closed position and an open position to provide access to the interior of the structure, wherein the door is located within a top surface of the transportable slurry box; a mechanical bay in the structure; and a heating unit removably mounted within the mechanical bay of the transportable slurry box for heating the cuttings slurry within the interior.

A self-contained heated portable vacuum slurry box which is constructed to hold both a positive pressure and a vacuum pressure. The slurry box generally includes a vacuum tank, a structure attached to the tank, a vertical tailgate, and a hook for pulling the slurry box onto a vehicle. The slurry box meets space restriction requirements while functioning within the environmental conditions of winter and summer seasons.

A tailgate assembly includes a tailgate hinge that is operable to attach a tailgate to a vacuum tank such that the tailgate is movable between an open position and a closed position, the vacuum tank operable to withstand vacuum pressure when the tailgate is in the closed position. A tailgate warming tube loop is operable to circulate a heated fluid through the tailgate, the tailgate warming tube loop attached to an interior surface of the tailgate and a first rear pipe flange that includes a first rear pipe flange warming channel in communication with the tailgate warming tube loop.

A vertical fluid storage tank includes an oval-shaped body having a first end, a second end, and a sidewall extending between the first and second ends. The body defines an interior fluid storage cavity and has a major axis and a minor axis along a horizontal cross section through the body. The fluid storage tank further includes a top wall at the first end of the body, a bottom wall at the second end of the body, and a frame member connected to the sidewall of the body. The frame member includes a first portion that extends longitudinally along the sidewall of the body and a second portion that extends along the bottom wall and is connected to the first portion. The fluid storage tank further includes a connection port on the sidewall of the body adapted for connection to the connection port on an adjacent fluid storage tank.

Aspects of the present disclosure provide techniques and apparatus for multiple physical resource block (PRB) operations for narrowband (NB) systems, such as NB internet-of-things (IoT). In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE), which may be an NB-IoT device. The method generally includes performing a cell search based on one or more signals received in an anchor RB within a set of RBs available for narrowband communications with a base station (BS); determining a location of at least one additional RB available for the narrowband communications with the BS based on an indication received in the anchor RB; and performing narrowband communications with the BS using at least one of: the anchor RB or the at least one additional resource block.

A dome-based cyclic inert sealing system for an external floating roof tank includes the external floating roof tank, a dome structure, an inert sealing pipeline, and a gas source servo device; wherein the dome structure is formed by a top portion of a tank wall of the external floating roof tank for sealing; the dome structure together with an internal wall of the external floating roof tank, a floating plate and a sealing device form a gas phase space which is isolated from atmosphere, so as to fill the gas phase space with an inert sealing medium; the inert sealing medium is a gas fire-fighting medium used in a suffocation fire-fighting method; the gas source servo device is connected to the gas phase space through the inert sealing pipeline and communicates through a valve for feedback-controlling states of the inert sealing medium in the gas phase space.

Method of handling proppant at a well site using a plurality of modular proppant containers in which first and second modular proppant container in a filled state are removed from delivery transport vehicles and transferred to first and second cradle positions on a support structure using one or more heavy-duty handlers. Proppant is discharged by gravity feed from the outlet of the first and second modular proppant containers and directed to a hopper until the modular proppant containers are in an empty state.

An apparatus to support a proppant container includes a frame to receive and support the proppant container. The frame has a top surface that receives and positions the proppant container in an elevated position. The apparatus also includes a box guide assembly positioned on the top surface a box guide assembly connected to the top surface of the frame for defining a cradle section having four corners. The box guide assembly including a box guide positioned at each of the corners. Each box guide has a corner member extending upwardly from the top surface along a peripheral edge of the frame and a guide member extending adjacent the corner member. The guide member include an inclined face for aligning the proppant container in the cradle section. The box guide assembly guides the proppant container into the cradle section when loaded onto the frame in the elevated position.

A tank for transporting fluids on a truck chassis includes a front wall, side walls, a back wall, a top, and a floor. Interior stairs extend from the floor to an opening in the top to allow stair access into the interior with integrated safety handrails on the fill port cover. Stair toe kicks act as internal transverse baffles to help control fluid motion and surging. The stairs also act as a structural stiffener between longitudinal baffles. Horizontal baffles assist in controlling fluid motion and surging. Formed baffles provide strength and stiffness. A baffle interlocking system improves joint integrity and aids manufacturing. Formed outer skins provide structural strength for the tank. Ports located in front and rear bulkheads may be used for tank ventilation or, depending on local safety codes, as secondary access points. Doors or other access openings may be located in the tank bulkheads to provide better interior access.