Abstract: Systems and methods for placing proppant in a portion of a subterranean formation (e.g., in a fracturing operation) using two or more immiscible fluids are provided. In certain embodiments, the methods comprise: introducing into a well bore penetrating a portion of a subterranean formation alternating stages of a first treatment fluid comprising one or more proppants, and a second treatment fluid comprising a lesser concentration of proppants than the first fluid, wherein the first fluid and the second fluid are substantially immiscible in one another, and wherein the alternating stages of the first and second treatment fluids are introduced into the well bore at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation.

Abstract: A method includes introducing a proppant slurry into a first end of a hydraulic energy transfer system, introducing a clean fluid into a second end of the hydraulic energy transfer system opposite the first end, operating the hydraulic energy transfer system to retain a portion of the proppant slurry in the hydraulic energy transfer system while transferring pressure of the clean fluid to the proppant slurry, and forming a fluid plug that separates the proppant slurry and the clean fluid, the fluid plug being formed by increasing a viscosity of the portion of the proppant slurry to be higher than a viscosity of the clean fluid and a viscosity of the proppant slurry in the hydraulic energy transfer system.

Abstract: Well systems including a wellbore lined with a wellbore lining and a pressure booster extendable within the wellbore on a conveyance whereby an annulus is defined between the conveyance and the wellbore lining. The pressure booster includes a body having a first end coupled to the conveyance, a jetting chamber defined within the body, one or more flow ports defined in the body and providing fluid communication between the jetting chamber and the annulus, and a jet nozzle in fluid communication with the conveyance. The pressure booster receives a first fluid through the conveyance and a second fluid from the annulus and mixes the first and second fluids to discharge a fracturing fluid below the pressure booster at a pressure greater than a pressure within the annulus above the pressure booster.

Abstract: A wellbore servicing system disposed at a wellbore, the wellbore servicing system comprising at least one wellbore servicing equipment component, wherein a flow path extends from the wellbore servicing system component into the wellbore, and a flow-back control system, wherein the flow-back control system is disposed along the flow path, and wherein the flow-back control system is configured to allow fluid communication via the flow path in a first direction at not less than a first rate and to allow fluid communication via the flow path in a second direction at not more than a second rate, wherein the first rate is greater than the second rate.

Abstract: Systems and methods may be configured to monitor, calculate, and optimize diesel fuel consumption for dual-fuel engines. For example, a method may include performing a well site operation at first operating parameters with a dual-fuel engine configuration operating at first engine parameters, wherein the dual-fuel engine configuration comprises one or more dual-fuel engines; changing the first operating parameters to second operating parameters and the first engine parameters to second engine parameters; determining a maximum natural gas substitution percentage in a fuel comprising a natural gas/diesel mixture for at least one of the dual-fuel engines at the second operating parameters and the second engine parameters; and changing a fuel composition supplied to the at least one of the dual-fuel engines based on the maximum natural gas substitution percentage.

Abstract: A tubular connector includes a first tubular member that includes a female end; a second tubular member including a male end insertable into the female end, each of the first and second tubular members including a bore that extends there through; a clamp positionable about the first and second tubular members to urge the male and female ends into sealing engagement; a housing that at least partially encloses the clamp such that a chamber is defined between the clamp and the housing; and a plate positionable between an axial end of the clamp and the housing.

Abstract: A system is disclosed for cooling at least one pump used to supply fluids to subterranean formations in connection with the recovery of hydrocarbons, where the cooling system includes a cooling tower connected to the at least one pump to remove heat from the at least one pump, with a plurality of fans configured in an array and oriented vertically within the cooling tower, wherein each of the plurality of fans comprises an inner flow path having an output end directed towards the cooling tower output end, and an intake end. The cooling system may further include an exhaust pipe axially located within the cooling tower to direct heated air from the exhaust pipe towards the cooling tower output end.

Abstract: Systems and methods for placing proppant in a portion of a subterranean formation (e.g., in a fracturing operation) using two or more immiscible fluids are provided. In certain embodiments, the methods comprise: introducing into a well bore penetrating a portion of a subterranean formation alternating stages of a first treatment fluid comprising one or more proppants, and a second treatment fluid comprising a lesser concentration of proppants than the first fluid, wherein the first fluid and the second fluid are substantially immiscible in one another, and wherein the alternating stages of the first and second treatment fluids are introduced into the well bore at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation.

Abstract: Systems and methods of automatically tracking the utilization of a piece of wellbore servicing equipment are disclosed. The system includes an identification tag coupled to the wellbore servicing equipment. The system further includes one or more identification antennas located in close proximity to the identification tag and one or more identification tag readers for receiving one or more signals from the one or more identification antennas.

Abstract: Well systems including a wellbore lined with a wellbore lining and a pressure booster extendable within the wellbore on a conveyance whereby an annulus is defined between the conveyance and the wellbore lining. The pressure booster includes a body having a first end coupled to the conveyance, a jetting chamber defined within the body, one or more flow ports defined in the body and providing fluid communication between the jetting chamber and the annulus, and a jet nozzle in fluid communication with the conveyance. The pressure booster receives a first fluid through the conveyance and a second fluid from the annulus and mixes the first and second fluids to discharge a fracturing fluid below the pressure booster at a pressure greater than a pressure within the annulus above the pressure booster.

Abstract: Systems and methods may be configured to monitor, calculate, and optimize diesel fuel consumption for dual-fuel engines. For example, a method may include performing a well site operation at first operating parameters with a dual-fuel engine configuration operating at first engine parameters, wherein the dual-fuel engine configuration comprises one or more dual-fuel engines; changing the first operating parameters to second operating parameters and the first engine parameters to second engine parameters; determining a maximum natural gas substitution percentage in a fuel comprising a natural gas/diesel mixture for at least one of the dual-fuel engines at the second operating parameters and the second engine parameters; and changing a fuel composition supplied to the at least one of the dual-fuel engines based on the maximum natural gas substitution percentage.

Abstract: Corrosion resistant alloys in fluid ends to prolong the life of a well service pump. Methods of using such corrosion resistant alloys that provide a fluid end that has a corrosion resistant alloy having a fatigue limit greater than or equal to the tensile stress on the fluid end at maximum working pressure in the fluid end for an aqueous-based fluid; installing the fluid end in a well service pump; and pumping the aqueous-based fluid through the fluid end.

Abstract: Tracking and associating consumable components with the respective pieces of wellbore servicing equipment to which they are coupled may include using identifier tags coupled to each piece of wellbore servicing equipment and to each consumable component. An identifier tag reader may be used to read both the identifier tag of the piece of wellbore servicing equipment and the identifier tag of the consumable component, thereby enabling association of the consumable component to the piece of wellbore servicing equipment to which it is coupled, for the duration of such coupling. Such association may be carried out and/or tracked in one or more databases, wherein other information pertaining to either piece of equipment may be associated with both pieces of equipment. In addition, usable life spans of consumable components may be more easily determined based at least in part on such association.

Abstract: Systems and methods for monitoring, calculating, and/or optimizing the consumption of fuel in operating motorized equipment in well site operations or other jobs are provided. In one embodiment the methods comprise: calculating a set of fuel consumption rates for one or more engines at a job site as a function of a speed of each engine, a hydraulic horsepower load to be provided by each engine, and an external parasitic load to be provided by each engine; identifying one or more operating speeds for the one or more engines during an operation at the job site based at least in part on the set of fuel consumption rates for the one or more engines; and operating the one or more engines at the one or more operating speeds during an operation at the job site.

Abstract: Systems and methods for monitoring, calculating, and/or optimizing engine emissions produced in operating motorized equipment in well site operations or other jobs are provided. In one embodiment, the methods comprise: providing a set of exhaust emissions rates for one or more engines at a job site as a function of a speed of each engine and total brake horsepower to be provided by each engine; identifying one or more operating speeds or transmission gears for the one or more engines during an operation at the job site based at least in part on the set of exhaust emissions rates for the one or more engines; and operating the one or more engines at the one or more operating speeds or transmission gears during an operation at the job site.

Abstract: Blending particulate and liquid to make slurry for use in oilfield operations is addressed. The blender has an upwardly facing particulate expeller with a flat base, raised hub, and generally radially extending, circumferentially spaced vanes extending upwardly from the base. The vanes extend from leading edges spaced about a vane inner diameter to tips spaced about a vane outer diameter. Adjacent expeller vanes define expeller passageways therebetween. The particulate expeller does not serve as a meaningful liquid impeller and the blender does not act significantly as a pump. The expeller has a several preferred diameter, clearance, height and length dimensions and ratios. Wide, deep expeller inlets and shallow, narrow outlets enhance particulate entry and minimize expeller torque. Vane extensions impart velocity to the particulate upon contact and minimize sensitivity to particulate entry velocity. Maximized circumferential overlap of adjacent vanes reduces liquid back-flow.

Abstract: Disclosed are systems and methods utilizing multiple parallel pumps to deliver a mixture of the proppant and clean fluid via a manifold trailer. One method of providing a step-change in proppant concentration includes selecting a first flow rate for a first pump connected between a first input node and first output node, calculating a first transit time for a flow of a fluid at the first flow rate through a first flow path extending from the first inlet node, through the first pump, and to the first outlet node, and calculating a second flow rate for a second pump connected between the first input node and the first output node such that a second transit time for a flow of the fluid through a second flow path extending from the first inlet node, through the second pump, and to the first outlet node is equal to the first transit time.

Abstract: A displacement assistance device can include at least two flow paths in fluid communication with a flow passage, and a blocking member that blocks flow through each flow path in response to the flow through that flow path. A method of assisting displacement of a tubular string can include installing the tubular string, then discharging a blocking member into the tubular string, and flowing a fluid through a flow passage extending longitudinally through a displacement assistance device connected in the tubular string, thereby causing the member to repeatedly block flow through at least two flow paths in succession. A system can include a displacement assistance device connected in a tubular string, the device including at least two flow paths in communication with a flow passage extending through the tubular string, and a blocking member that alternately blocks flow through the flow paths in response to flow through the flow passage.

Abstract: Disclosed are systems and methods utilizing multiple parallel pumps to deliver a mixture of the proppant and clean fluid via a manifold trailer. One method of providing a step-change in proppant concentration includes selecting a first flow rate for a first pump connected between a first input node and first output node, calculating a first transit time for a flow of a fluid at the first flow rate through a first flow path extending from the first inlet node, through the first pump, and to the first outlet node, and calculating a second flow rate for a second pump connected between the first input node and the first output node such that a second transit time for a flow of the fluid through a second flow path extending from the first inlet node, through the second pump, and to the first outlet node is equal to the first transit time.

Abstract: A wellbore fluid pressure measurement system includes a densometer adapted to measure a fluid density of a fluid flowing in a tubing system; and a monitoring unit communicably coupled to the densometer. The monitoring unit is adapted to receive a plurality of values representative of the fluid density from the densometer and includes a memory adapted to store the plurality of values representative of the fluid density; and one or more processors operable to execute a fluid pressure measurement module. The module is operable when executed to determine a fluid pressure of the fluid based on at least a portion of the values representative of the fluid density.