Abstract: A downhole sub has a cylindrical body and a sealing device disposed about the cylindrical body. The cylindrical body has a first fluid chamber configured to store a hydraulic fluid, a second fluid chamber configured to store a liquid energetic material, a piston slidably disposed between the first fluid chamber and the second fluid chamber, and an ignition unit. The sealing device has two annular pistons and two annular sealing rings. The sub is loaded with the liquid energetic material and lowered into a well casing installed in the subterranean formation. A section of the well casing having a plurality of perforations is sealed. The liquid energetic material in the downhole sub is injected into the subterranean formation through the plurality of perforations in the well casing and is detonated using the ignition unit in the downhole sub.

Abstract: The present invention discloses a method for controlling a toe-end sliding sleeve in a horizontal well based on efficient decoding communication. The method comprises the following steps: forming a pressure wave signal by adjusting and controlling a pressure value in a wellbore according to a first preset encoding manner; acquiring a pressure value change signal in the wellbore, determining a reference time by using an STA/LTA method, and predicting pressure value to acquire a predicted pressure value signal curve; identifying a toe-end sliding sleeve control command in the acquired pressure wave signal by using a first preset decoding manner based on the fitness between the acquired pressure value signal curve and the predicted pressure value signal curve; and driving the toe-end sliding sleeve to perform actions according to the toe-end sliding sleeve control command.

Abstract: A pump system includes a pump barrel disposed within a housing. A standing valve is disposed at a first end of a pump chamber defined within the pump barrel. A traveling valve is disposed at a second end of the pump chamber. The traveling valve is movable relative to along an axial axis and relative to the housing. A motor stator is disposed inside the housing. produces a rotating electromagnetic field upon receiving electrical power. A motor rotor is rotatably supported within the motor stator and rotates about the axial axis in response to the rotating electromagnetic field. A traveling plug is coupled to the valve body of the traveling body and arranged to move linearly along the axial axis in response to rotation of the motor rotor. The pump system can be disposed in a wellbore to lift fluids up a tubing in the wellbore.

Abstract: A cased bore straddle packer has an upper unload sub sleeve with fluid ports that are selectively aligned with corresponding ports in an upper unload sub mandrel component and a lower unload sub sleeve with fluid ports that are selectively aligned with corresponding ports in a lower unload sub mandrel component to permit fluid to be selectively dumped from the straddle packer. Control of the alignment of the respective ports is effected by manipulating an auto-J ratchet machined into a multicomponent mandrel of the straddle packer. The auto-J ratchet is controlled from the surface using completion string pull and push manipulations.

Abstract: A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps configured to pump fluid into a wellbore associated with a well at a high pressure; at least one turbine generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps, each turbine generator having at least one air intake channel; and an air chiller system associated with the at least one turbine generator, the air chiller system comprising: a chiller unit configured to chill a fluid; and at least one coil in fluid communication with the chiller unit and positioned adjacent to the at least one air intake channel, wherein the air chiller system is configured to increase a power output of the at least one turbine generator.

Abstract: A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the subterranean formation and fractures the subterranean formation; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; and at least one switchgear electrically coupled to the at least one generator and configured to distribute an electrical load between the plurality of electric pumps and the at least one generator.

Abstract: A well system includes a fiber optic cable positionable downhole along a length of a wellbore. The well system also includes a reflectometer communicatively coupleable to the fiber optic cable. The reflectometer injects optical signals into the fiber optic cable and receives reflected optical signals from the fiber optic cable. Further, the reflectometer identifies strain detected in the reflected optical signals generated from seismic waves of a microseismic event. Additionally, the reflectometer identifies a focal mechanism of the microseismic event and velocities of the seismic waves. The reflectometer also determines a position of the microseismic event using the strain detected in the reflected optical signals, the focal mechanism of the microseismic event, and the velocities of the seismic waves.

Abstract: A method for fracturing a formation is provided. Real-time fracturing data is acquired from a well bore during fracturing operation. The real-time fracturing data is processed using a recurrent neural network trained using historical data from analogous wells. A real-time response variable prediction is determined using the processed real-time fracturing data. Fracturing parameters for the fracturing operation are adjusted in real-time based on the real-time response variable prediction. The fracturing operation is performed using the fracturing parameters that were adjusted based on the real-time response variable prediction.

Abstract: A frac plug apparatus has a plug body that comprises a central bore and separable elements. The central bore extends axially through the plug body. The separable elements are joined by relatively weak bridging portions adapted to break in a controlled manner, the separable elements thereby forming an integral component comprised of the separable elements. The separable elements comprise a wedge element and an array of slip elements. The slip elements are joined to the wedge element by first bridging portions.

Abstract: To estimate a state of a natural resource in pipeline equipment during extraction in an oil field, provided is an apparatus including a data acquiring section that acquires measurement data, measured by a measurement device, indicating a state of a natural resource that is a fluid flowing through an extraction network for extracting the natural resource; a state estimating section that estimates the state of the natural resource at least at one location differing from a location where the measurement device is provided in a flow path of the extraction network, using the measurement data and a model of the extraction network; and a margin calculating section that calculates a margin until flow path blocking matter is generated in the extraction network, based on the estimated state of the natural resource.

Abstract: Embodiments include a hydraulic fracturing system for fracturing a subterranean formation. The system includes an electric pump, arranged on a first support structure, the electric pump coupled to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure so that the fluid passes from the wellbore into the subterranean formation and fractures the subterranean formation. The system also includes support equipment, arranged on a second support structure, electrically coupled to the electric pump, wherein the support equipment includes at least a transformer for distributing power to the electric pump, the power being received from at least one generator at a voltage higher than an operating voltage of the electric pump.

Abstract: An injection pumping system is used to generate pressure pulses in a wellbore to create pressure spikes for stimulation treatment of the wellbore. An initial pressure pulse is generated with a known travel time from the surface to a termination point and back to a specified location within the wellbore. A subsequent pressure pulse with a known travel time from the surface to the specified location can be generated to collide with the initial pressure pulse at the specified location. Knowing the speed of sound throughout the wellbore allows for an accurate calculation of the required travel times for each of the pressure pulses. Multiple sections of the wellbore can be treated preferentially and independently without requiring multiple runs of a perforating tool as the pressure pulses can be manipulated to collide at different locations throughout the wellbore based on the known travel times.

Abstract: Aspects of the subject technology relate to systems, methods, and computer-readable media for controlling a hydraulic fracturing job. Diagnostics data of a hydraulic fracturing completion of a wellbore can be received. A fracture formation model that models formation characteristics of fractures formed through the wellbore into a formation surrounding the wellbore during the hydraulic fracturing completion with respect to surface variables can be accessed. A subsurface objective function of fracture complexity can be selected from a plurality of subsurface objective functions for changing one or more of the formation characteristics of the fractures. The fracture formation model can be applied based on the diagnostics data to determine values of the surface variables for controlling the formation characteristics of the fractures to converge on the subsurface objective function of fracture complexity. As follows, a fracture completion plan can be formed based on the values of the surface variables.

Abstract: A recursive method of optimizing rate of penetration while drilling a well. The method can include collecting historical data on a plurality of drilling parameters, performing a mathematical analysis on the historical data to correlate each drilling parameter to a rate of penetration, determining an importance of each drilling parameter, establishing an operating envelope for each drilling parameter, and adjusting at least one drilling parameter to achieve a desired rate of penetration. The steps can then be repeated at a user defined interval.

Abstract: Drilling installation comprising a cantilever with a drilling floor for performing drilling operations; further comprising an independent operations handling system arranged for handling equipment underneath the drilling floor independent of the drilling operations on the drilling floor, wherein the independent operations handling system comprises a handling element for cooperation with the equipment to be handled, wherein the handling element is extendible underneath the cantilever.

Abstract: Disclosed is a method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall, including the following steps: pumping the prefluid and the sand-carrying fluid into the target interval, and injecting the biological oil displacement agent into the target interval in sequence; pumping temporary plugging agent into the target layer to implement crack plugging diverting; pumping the sand-carrying liquid into the target interval, and injecting the biological oil displacement agent into the target interval. The beneficial effect of the technical scheme proposed in this disclosure is: by injecting oil displacement agent to fracturing fluid, the temporary plugging diverting fracturing is integrated constructed with enhanced oil recovery, at the same time, it can overcome the incomplete removal of temporary plugging agent and the water lock effect of fracturing fluid caused by diverting fracturing.

Abstract: Stimulation sleeve (1) for well intervention in a subterranean wellbore, comprising: a housing (10) having a through channel (11) with a first end (11a) and a second end (11b), and one or more flow ports (14), and a sliding sleeve (13) disposed axially movable within the housing (10) to open or close said flow ports (14). Said sliding sleeve (13) is equipped with at least a first obturator seat (15) for receipt of a obturator (17) to partially or fully close fluid communication in the through channel (11) of the housing (10), and a time delay mechanism (20) to allow the sliding sleeve (13) to axially travel in the housing (10) at a predetermined speed to open or close said flow ports (14). The invention also discloses a method for well completion in a subterranean wellbore using a sliding sleeve (1).

Abstract: A fracturing treatment optimization system using multi-point pressure sensitive fiber optic cables to measure interwell fluid interaction data, microdeformation strain data, microseismic data, distributed temperature data, distributed acoustic data, and distributed strain data from multiple locations along a wellbore. The fracturing treatment optimization system may analyze the interwell fluid interaction data, microdeformation strain data, microseismic data, distributed temperature data, distributed acoustic data, and distributed strain data, modify a subsurface fracture network model, and calculate interwell fluid interaction effects. The fracturing treatment optimization system may use the fracture network model to measure current and predict future fracture growth, hydraulic pressure, poroelastic pressure, strain, stress, and related completion effects. The fracturing treatment optimization system may enable real-time monitoring and analysis of treatment and monitoring wells.

Abstract: A plug with a resettable closure member comprising a body defining a flow bore, a closure member movable between a position closing the flow bore and a position wherein the flow bore is open, the closure member responsive to a selected hydrodynamic force to move to the position closing the flow bore and responsive to an attractive magnetic force to move to the position wherein the flow bore is open.

Abstract: A wellbore perforating system including a multi-component universal initiator. The universal initiator is a “plug and play” initiator able to accommodate a wide range of perforating gun system.