With advancements in technology over the past few decades, the ability to reach unconventional sources of hydrocarbons has tremendously increased. Horizontal drilling and hydraulic fracturing are two such ways that new developments in technology have led to hydrocarbon production from previously unreachable shale formations. Hydraulic fracturing (fracturing) operations typically require powering numerous components in order to recover oil and gas resources from the ground. For example, hydraulic fracturing usually includes pumps that inject fracturing fluid down the wellbore, blenders that mix proppant into the fluid, cranes, wireline units, and many other components that all must perform different functions to carry out fracturing operations.
Conventionally, these components or systems of components are generally independent systems that are individually controlled by operators. Furthermore, in some cases, operators are also responsible for taking measurements, interpreting raw data, making calculations, and the like. Thus, a large amount of operator intervention to diagnose, interpret, respond to, adjust, and otherwise control operating conditions of the various components.
Applicant recognized the problems noted above herein and conceived and developed embodiments of systems and methods, according to the present disclosure, for assessing flow rates in hydraulic fracturing systems.
In an embodiment, an automated hydraulic fracturing system includes a pump system fluidly coupled to a wellhead to pump a fracturing fluid into the wellhead, wherein the pump is instrumented with a pump sensor and a pump controller. The hydraulic fracturing system further includes a blender system fluidly coupled to the pump, the blender mixing together one or more materials to form the fracturing fluid, wherein the blender is instrumented with a blender sensor and a blender controller, and a source system for providing at least one of the one or more materials to the blender, wherein the source is instrumented with a source sensor and a source controller. The hydraulic fracturing system also includes another component, the component instrumented with at least one of a component sensor and a component controller. At least one of the pump controller, blender controller, the source controller, or the component controller controls a respective aspect of the automated hydraulic fracturing system based at least in part on automated instructions, the automated instructions generated based on measurements received from at least one of the pump sensor, the blender sensor, the source sensor, or the component sensor.
In an embodiment, an automated hydraulic fracturing system includes a pump system fluidly coupled to a wellhead at a wellsite to pump a fracturing fluid into the wellhead, a blender configured to mix together proppant and a fluid mixture to form the fracturing fluid, a proppant storage and delivery system configured to provide the proppant for the blender, a hydration unit configured to mix an additive into a fluid to form the fluid mixture and provide the fluid mixture to the blender, a fluid storage and delivery system configured to provide the fluid for the hydration unit, an additive storage and delivery system configured to provide the additive to the hydration unit, and an automated control system including a plurality of sensing devices and a plurality of control devices integrated into the pump system, the blender system, the proppant storage and delivery system, the fluid storage and delivery system, and the additive storage and delivery system, the automated control system configured to monitor one or more parameters of the automated hydraulic fracturing system via the plurality of sensing devices and transmit control instructions for one or more of the plurality of control devices to control an aspect of the automated hydraulic fracturing system.
In an embodiment, an automated hydraulic fracturing method includes initiating a hydraulic fracturing operation using an automated hydraulic fracturing system, providing a first material for a fracturing fluid from a first source to a blender, the first source including a source sensor for measuring one or more parameters associated with the first source and a source controller for controlling one or more functions of the first source, providing a second material for the fracturing fluid from a second source to the blender, mixing the first material and the second material at the blender to form the fracturing fluid, the blender including a blender sensor for measuring one or more parameters associated with the blender and a blender controller for controlling one or more functions of the bender, providing the fracturing fluid from the blender to a pump, the pump including a pump sensor for measuring one or more parameters associated with the pump and a pump controller for controlling one or more functions of the pump, injecting the fracturing fluid from the pump into a wellhead coupled to a well, monitoring the one or more parameters via the source sensor, the blender sensor, and the pump sensor, generating automated instructions for at least one of the source controller, the blender controller, or the pump controller based at last in part on the one or more parameters, and controlling at least one of the one or more functions of the first source, the blender, or the pump via the source controller, the blender controller, or the pump controller, respectively, based at least in part on the automated instructions.
The foregoing aspects, features, and advantage of embodiments of the present disclosure will further be appreciated when considered with reference to the following description of embodiments and accompanying drawings. In describing embodiments of the disclosure illustrated in the appended drawings, specific terminology will be used for the sake of clarity. However, the disclosure is not intended to be limited to the specific terms used, and it is to be understood that each specific term includes equivalents that operate in a similar manner to accomplish a similar purpose.
The foregoing aspects, features, and advantages of the present disclosure will be further appreciated when considered with reference to the following description of embodiments and accompanying drawings. In describing the embodiments of the disclosure illustrated in the appended drawings, specific terminology will be used for the sake of clarity. However, the disclosure is not intended to be limited to the specific terms used, and it is to be understood that each specific term includes equivalents that operate in a similar manner to accomplish a similar purpose.
When introducing elements of various embodiments of the present disclosure, the articles “a”, “an”, “the”, and “said” are intended to mean that there are one or more of the elements. The terms “comprising”, “including”, and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements. Any examples of operating parameters and/or environmental conditions are not exclusive of other parameters/conditions of the disclosed embodiments. Additionally, it should be understood that references to “one embodiment”, “an embodiment”, “certain embodiments”, or “other embodiments” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Furthermore, reference to terms such as “above”, “below”, “upper”, “lower”, “side”, “front”, “back”, or other terms regarding orientation or direction are made with reference to the illustrated embodiments and are not intended to be limiting or exclude other orientations or directions. Additionally, recitations of steps of a method should be understood as being capable of being performed in any order unless specifically stated otherwise. Furthermore, the steps may be performed in series or in parallel unless specifically stated otherwise.
After being discharged from the pump system 16, a distribution system 30, such as a missile, receives the fracturing fluid solution for injection into the wellhead 18. The distribution system 30 consolidates the fracturing fluid solution from each of the pump trucks 14 (for example, via common manifold for distribution of fluid to the pumps) and includes discharge piping 32 (which may be a series of discharge lines or a single discharge line) coupled to the wellhead 18. In this manner, pressurized solution for hydraulic fracturing may be injected into the wellhead 18. In the illustrated embodiment, one or more sensors 34, 36 are arranged throughout the hydraulic fracturing system 10. In embodiments, the sensors 34 transmit flow data to a data van 38 for collection and analysis, among other things.
Blender unit 58 can have an onboard chemical additive system, such as with chemical pumps and augers. Optionally, additive source 54 can provide chemicals to blender unit 58; or a separate and standalone chemical additive system (not shown) can be provided for delivering chemicals to the blender unit 58. In an example, the pressure of the fracturing fluid in line 68 ranges from around 80 psi to around 100 psi. The pressure of the fracturing fluid can be increased up to around 15,000 psi by pump system 66. A motor 69, which connects to pump system 66 via connection 40, drives pump system 66 so that it can pressurize the fracturing fluid. In one example, the motor 69 is controlled by a variable frequency drive (“VFD”).
After being discharged from pump system 66, fracturing fluid is pumped into a wellhead assembly 71. Discharge piping 42 connects discharge of pump system 66 with wellhead assembly 71 and provides a conduit for the fracturing fluid between the pump system 66 and the wellhead assembly 71. In an alternative, hoses or other connections can be used to provide a conduit for the fracturing fluid between the pump system 66 and the wellhead assembly 71. Optionally, any type of fluid can be pressurized by the fracturing pump system 66 to form injection fracturing fluid that is then pumped into the wellbore 42 for fracturing the formation 44, and is not limited to fluids having chemicals or proppant.
An example of a turbine 74 is provided in the example of
An example of a micro-grid 84 is further illustrated in
The output or low voltage side of the transformer 56 connects to a power bus 90, lines 92, 94, 96, 98, 100, and 101 connect to power bus 90 and deliver electricity to electrically powered components of the system 40. More specifically, line 92 connects fluid source 20 to bus 90, line 94 connects additive source 24 to bus 90, line 96 connects hydration unit 18 to bus 90, line 98 connects proppant source 62 to bus 90, line 100 connects blender unit 28 to bus 90, and line 101 connects bus 90 to an optional variable frequency drive (“VFD”) 102. Line 103 connects VFD 102 to motor 69. In one example, VFD 102 can be used to control operation of motor 69, and thus also operation of pump 66.
In an example, additive source 54 contains ten or more chemical pumps for supplementing the existing chemical pumps on the hydration unit 48 and blender unit 58. Chemicals from the additive source 54 can be delivered via lines 56 to either the hydration unit 48 and/or the blender unit 58. In one embodiment, the elements of the system 40 are mobile and can be readily transported to a wellsite adjacent the wellbore 42, such as on trailers or other platforms equipped with wheels or tracks.
In the illustrated embodiment, one or more instrumentation devices 104 such as various types of sensors 106 and controllers 108 are arranged throughout the hydraulic fracturing system 40 and coupled to one or more of the aforementioned components, including any of the wellhead assembly 71, pump 66, blender unit 58, proppant source 62, hydration unit 48, additive source 54, fluid source 50, generator 80, turbine 74, fuel source 76, any deliveries lines, and various other equipment used in the hydraulic fracturing system 40, not all of which are explicitly described herein for sake of brevity. The instrumentation 104 may include various sensors, actuators, and/or controllers, which may be different for different components. For example, the instrumentation devices 104 may include hardware features such as, low pressure transducer (low and high frequency), high pressure transducers (low and high frequency), low frequency accelerometers, high frequency accelerometers, temperature sensors, external mounted flow meters such as doppler and sonar sensors, magnetic flow meters, turbine flow meters, proximity probes and sensors, speed sensors, tachometers, capacitive, doppler, inductive, optical, radar, ultrasonic, fiber optic, and hall effect sensors, transmitters and receivers, stroke counters, GPS location monitoring, fuel consumption, load cells, PLCs, and timers. In some embodiments, the instrumentation devices may be installed on the components and dispersed in various locations.
The components may also include communication means that enable all the sensor packages, actuation devices, and equipment components to communicate with each other allowing for real time conditional monitoring. This would allow equipment to adjust rates, pressure, operating conditions such as engine, transmission, power ends RPMs, sand storage compartment gates, valves, and actuators, sand delivery belts and shoots, water storage compartments gates, valves, and actuators, water delivery lines and hoses, individual fracture pump's rates as well as collective system rates, blender hydraulics such as chemical pumps, liquid and dry, fan motors for cooling packages, blender discharge pumps, electric and variable frequency powered chemical pumps and auger screws, suction and discharge manifold meters, valves, and actuators. Equipment can prevent failures, reduce continual damage, and control when it is allowed and not allowed to continue to operate based on live and continuous data readings. Each component may be able to provide troubleshooting codes and alerts that more specifically narrow down the potential causes of issues. This allows technicians to more effectively service equipment, or for troubleshooting or other processes to be initialized automatically. Conditional monitoring will identify changes in system components and will be able to direct, divert, and manage all components so that each is performing its job the most efficiently
In some embodiments, the sensors may transmit data to a data van 38 for collection and analysis, among other things. In some embodiment, the sensors may transmit data to other components, to the central processing unit, or to devices and control units remote from the site. The communications between components, sensors, and control devices may be wired, wireless, or a combination of both. Communication means may include fiber optics, electrical cables, WiFi, Bluetooth, radio frequency, and other cellular, nearfield, Internet-based, or other networked communication means.
The features of the present disclosure may allow for remote monitoring and control from diverse location, not solely the data van 68. Fracturing control may be integrated in with the sensor and monitoring packages 104 to allow for automated action to be taken when/if needed. Equipment may be able to determine issues or failures on its own, then relay that message with a specified code and alarm. Equipment may also be in control to shut itself down to prevent failures from occurring. Equipment may monitor itself as well as communicate with the system as a whole. This may allow whole system to control equipment and processes so that each and every component is running at its highest efficiency, sand, water, chemical, blenders, pumps, and low and high pressure flow lines. Features of the present disclosure may capture, display, and store data, which may be visible locally and remotely. The data may be accessible live during the data collection and historical data may also be available. Each component to this system can be tested individually with simulation as well as physical function testing.
Operating efficiencies for each individual component and the system 40 may be greatly improved. For example, sand storage and delivery to the blender can be monitored with load cells, sonar sensors and tachometers to determine storage amounts, hopper levels, auger delivery to the tub. Pump efficiencies may be monitored with flow sensors, accelerometers, pressure transducer and tachometers to optimize boost and rate while minimizing harmful conditions such as cavitation or over rating. Failure modes such as wash outs, cutting, valve and/or seat failures, packing issues and supply blockage can be captured and then prevented. Flow lines, both suction supply and discharge can be monitored with flow meters to distribute and optimize flow rates and velocities while preventing over pumping scenarios. Feedback loops of readings from blender to supply manifolds and to pumps can work with each other to optimize pressure and flow. Dropping out of an individual pump may occur preventing further failures, when this occurs the system as a whole may automatically select the best pumps to make up that needed rate. These changes and abilities solve equipment issues and prevent down time as well as provide a means to deliver a consistent job.
In some embodiments, instrumentation devices 104 (any of the above described, among others) can be imbedded, mounted, located in various locations such as in line with flow vessels like hoses, piping, manifolds, placed one pump components such as fluid ends, power ends, transmission, engines, and any component within these individual pieces, mounted external to piping and flow vessels, mounted on under or above sand and water storage containers. Blender hoppers could be duel equipped with hopper proximity level sensors as well as a load cell to determine amount of sand in the hopper at any given time.
At least one of the one or more functions of the first source, the blender, the pump, or other component of the hydraulic fracturing system may be controlled 156 via the respective controller based on the automated control instructions. In some embodiments, the instructions may cause one or more of the control devices to automatically adjust one or more of a flow rate, a pressure, power, motor speed, gates, valve, actuators, delivery lines and conveyance devices, pump rates, or cooling systems. For example, a pump system may include comprises a motor controlled by the pump controller based at least in part on the automated instructions. In some embodiments, the blender includes at least one of a chemical pump, a cooling system, an auger, a blender discharge pump, a valve, or an actuator, any of which may be controlled by the blender controller based at least in part on the automated instructions. In some embodiments, the first or second source may include at least one of a gate, a valve, an actuator, a delivery belt, a delivery line, or a chemical pump, any one of which may controlled by a source controller based at least in part on the automated instructions. For example, the rate of delivery of a material may be automatically started, stopped, or adjusted based on the automated instructions. The pressure or rate at which the fracturing fluid is injected into the wellhead may be controlled based on the automated instructions.
The hydraulic fracturing system may include other components, such as a turbine, a generator, a hydration unit, a distribution system, a fuel source, or a wellhead, among others. These components may also be instrumented with sensors that measures at least one parameter associated with the turbine, the generator, the hydration unit, the distribution system, the fuel source, or the wellhead. These components may also include controllers, which control at least one aspect of the turbine, the generator, the hydration unit, the distribution system, the fuel source, or the wellhead, based at least in part on the automated instructions. In some embodiments, the hydraulic fracturing system includes a plurality of pumps and a distribution system, in which fracturing fluid is provided from the blender to the plurality of pumps, the fracturing fluid is provided from the plurality of pumps to the distribution system, and the fracturing fluid is injected from the distribution system into the wellbore. The individual pressure at each pump may be automatically adjusted based on the automated instructions. The combined or overall pump rate of the plurality of pumps may also be controlled, and the rate at the distribution system may also be controlled via the automated instructions.
In some embodiments, the method 140 may include detecting that at least one of the one or more parameters is outside of an acceptable threshold and automatically stopping or adjusting one or more functions of the hydraulic fracturing system in response to the detection. In some embodiments, the method 140 may include detecting substandard performance in one or more areas of the automated hydraulic fracturing system, automatically troubleshooting the automated hydraulic fracturing system based on live data from a plurality of sensors or previous data collected by the sensors, determining one or more causes or suspected causes of the substandard performance, and automatically adjusting one or more components of the automated hydraulic fracturing system to resolve the substandard performance. In some embodiments, the system may provide troubleshooting codes or alerts indicative of one or more sources of a performance issue.
The foregoing disclosure and description of the disclosed embodiments is illustrative and explanatory of the embodiments of the invention. Various changes in the details of the illustrated embodiments can be made within the scope of the appended claims without departing from the true spirit of the disclosure. The embodiments of the present disclosure should only be limited by the following claims and their legal equivalents.
This application is a continuation of U.S. patent application Ser. No. 16/564,185 filed Sep. 9, 2019 titled “AUTOMATED FRACTURING SYSTEM AND METHOD,” now U.S. Pat. No. 11,203,924 issued Dec. 21, 2021, which is a continuation of U.S. patent application Ser. No. 16/160,708 filed Oct. 15, 2018, titled “AUTOMATED FRACTURING SYSTEM AND METHOD,” now U.S. Pat. No. 10,408,031 issued Sep. 10, 2019, which claims priority to and the benefit of U.S. Provisional Application Ser. No. 62/572,148 filed Oct. 13, 2017 titled “AUTOMATED FRACTURING SYSTEM,” the full disclosure of which is hereby incorporated herein by reference in its entirety for all purposes.
Number | Name | Date | Kind |
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6007227 | Carlson | Dec 1999 | A |
8616274 | Belcher | Dec 2013 | B2 |
10408031 | Oehring | Sep 2019 | B2 |
10641075 | Lucas | May 2020 | B2 |
11203924 | Oehring | Dec 2021 | B2 |
20210040829 | Madasu | Feb 2021 | A1 |
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20220364447 A1 | Nov 2022 | US |
Number | Date | Country | |
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62572148 | Oct 2017 | US |
Number | Date | Country | |
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Parent | 16564185 | Sep 2019 | US |
Child | 17556409 | US | |
Parent | 16160708 | Oct 2018 | US |
Child | 16564185 | US |