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.

An aerodynamic curtain assembly for use with a tank trailer illustratively includes a front nose assembly, and opposing first and second side assemblies. The front nose assembly illustratively includes a front support coupled to the tank trailer, and a flexible air deflector screen coupled to the support and extending arcuately from a first upright supported by a first side of the tank trailer to a second upright supported by a second side of the tank trailer. Each of the side assemblies illustratively includes an upper support member, a lower support member, an upper coupler securing the upper end of a flexible air deflector screen to the upper support member, and a lower coupler securing the lower end of the flexible air deflector screen to the lower support member.

A method of transporting proppant to a wellsite can comprise transporting a plurality of trailers to a proppant-loading site, each of the trailers comprising one or more containers. At the proppant-loading site, proppant can be loaded into the container(s) of each of first and second ones of the trailers. A long combination vehicle comprising a truck and the first and second trailers can be formed at least by coupling the first trailer to the truck and the second trailer to the first trailer. The long combination vehicle can be driven from the proppant-loading site to the wellsite after proppant is loaded into the container(s) of each of the first and second trailers at the proppant-loading site. Less than 1% of a distance that the long combination vehicle drives from the proppant-loading site to the wellsite can be on a public road.

A tank trailer is provided. The tank trailer includes a tank having an interior volume adapted to contain fluid, and a manhole extending through the tank and positioned proximate a rear portion thereof and proximate to ground level. The tank trailer also includes a ventilation system having a ventilation interface communicating with the interior volume of the tank, a ventilation access port having a ventilation outlet positioned proximate the rear portion and proximate to ground level and a ventilation pipe adapted to establish fluid communication between the ventilation outlet and ventilation interface. The tank trailer further has a collection system which includes a collection pipe coupled between the ventilation interface and the ventilation pipe. The collection pipe defines an internal volume shaped and adapted to collect fluid spilling from the interior volume of the tank through the ventilation interface and at least partially prevent fluid flow into the ventilation pipe.

A heated slurry transport system for receiving, transporting and unloading a cuttings slurry in a non-frozen manner in cold weather environments. The heated slurry transport system generally includes a portable tank having an interior surface, at least one wall, and a rear door. A layer of insulation surrounds at least a portion of the portable tank to help retain heat within the portable tank. A heating unit is attached to the portable tank and adapted to heat a fluid that is transferred through at least one heat loop attached to the portable tank to heat the interior of the portable tank and the contents of the portable tank.

This disclosure is directed toward a heated tailgate for use in cold climates. The heated tailgate may be used with a self-contained heated portable vacuum slurry box. 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 heated tailgate provides that the slurry cuttings within the slurry box which are adjacent to the tailgate do not freeze and provides for a way in which the tailgate may seal to the vacuum box.

A cargo tank assembly can include a cargo tank, and a plurality of access ports for the cargo tank, including a manway. A cabinet can be arranged to provide ground-level access to the plurality of access ports. In some embodiments, the cabinet can provide a sole breakable seal for a set of equipment, or for the cargo tank.

A heated portable vacuum slurry box for efficiently storing and transporting material including drill cuttings from gas and oil well sites. The slurry box generally includes a vacuum tank, a structure attached to the tank, a mechanical bay, a vertical tailgate, and a hook for pulling the slurry box onto a vehicle. The features allow for the slurry box to be meet space restriction requirements at a well site while as well as function within the environmental conditions of winter and summer seasons. Jacketed openings, stack mount systems, and a removable power unit allow for efficient use of the slurry box.

This disclosure is directed toward a heated tailgate for use in cold climates. The heated tailgate may be used with a self-contained heated portable vacuum slurry box. 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 heated tailgate provides that the slurry cuttings within the slurry box which are adjacent to the tailgate do not freeze and provides for a way in which the tailgate may seal to the vacuum box.

Apparatus and installation methods for sampling ports are disclosed. Sampling ports include a port housing and a lid assembly. The lid assembly is configured to sealably close against the port housing. Additionally, the lid assembly can be secured, such as with a lock, to the port housing. In one aspect, the port housing includes a sample mount arrangement configured to receive a sampling assembly. The sample mount arrangement defines a sampling channel and the port housing defines a sampling opening and a first securing mount. The lid assembly includes a latch arrangement and defines a second securing mount.