WO2022192563A1 - Method and system for managing gas supplies - Google Patents
Method and system for managing gas supplies Download PDFInfo
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- WO2022192563A1 WO2022192563A1 PCT/US2022/019787 US2022019787W WO2022192563A1 WO 2022192563 A1 WO2022192563 A1 WO 2022192563A1 US 2022019787 W US2022019787 W US 2022019787W WO 2022192563 A1 WO2022192563 A1 WO 2022192563A1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/20—Computer models or simulations, e.g. for reservoirs under production, drill bits
Definitions
- Natural gas wells may include wells that do not produce oil but only raw natural gas or condensate wells that produce both gas and natural gas condensate (i.e., wet gas).
- a gas-liquid mixture at the well may pass through a field separator to remove condensate and water.
- the natural gas liquids separated at this stage may be transported to a gas plant accordingly.
- a mixed stream of gas, water, and/or oil may be transported to a gas plant for further processing.
- embodiments relate to a method that includes obtaining, by a computer processor, gas well data regarding various gas wells.
- the method further includes determining, by the computer processor, various well potential values for the gas wells based on the gas well data and a predetermined production period.
- the method further includes determining, by the computer processor and based on the well potential values, a reservoir pressure criterion, and a water risk criterion, an available supply rate for a respective gas well among the gas wells.
- the method further includes determining, by the computer processor, a production scenario based on the available supply rate and a supply target.
- the method further includes transmitting, by the computer processor, a command that implements a gas supply adjustment at a gas plant based on the production scenario.
- a system that include gas wells that include pressure sensors that detect flowing wellhead pressure (FWHP) data.
- the system further includes a gathering system coupled to the gas wells, where the gathering system includes remote headers that control streams from the gas wells.
- the system further includes a gas supply manager that includes a computer processor and is coupled to the gas wells and the gathering system. The gas supply manager obtains gas well data regarding gas wells.
- the gas supply manager further determines various well potential values for the gas wells based on the gas well data and a predetermined production period.
- the gas supply manager further determines, based on the well potential values, a reservoir pressure criterion, and a water risk criterion, an available supply rate for a respective gas well among the gas wells.
- the gas supply manager further determines a production scenario based on the available supply rate and a supply target.
- the gas supply manager transmits a command that implements a gas supply adjustment at one or more gas plants based on the production scenario.
- embodiments relate to a non-transitory computer readable medium storing instructions executable by a computer processor. The instructions obtain gas well data regarding various gas wells.
- the instructions further determine various well potential values for the gas wells based on the gas well data and a predetermined production period.
- the instructions further determine, based on the well potential values, a reservoir pressure criterion and a water risk criterion, an available supply rate for a respective gas well among the plurality of gas wells.
- the instructions further determine a production scenario based on the available supply rate and a supply target.
- the instructions further transmit a command that implements a gas supply adjustment at a gas plant based on the production scenario.
- FIGs. 1, 2, and 3A-3B show systems in accordance with one or more embodiments.
- FIG.4 shows a flowchart in accordance with one or more embodiments.
- FIG.5 shows an example in accordance with one or more embodiments.
- FIG. 6 shows a computer system in accordance with one or more embodiments. DETAILED DESCRIPTION [0012]
- numerous specific details are set forth in order to provide a more thorough understanding of the disclosure. However, it will be apparent to one of ordinary skill in the art that the disclosure may be practiced without these specific details.
- ordinal numbers e.g., first, second, third, etc.
- an element i.e., any noun in the application.
- the use of ordinal numbers is not to imply or create any particular ordering of the elements nor to limit any element to being only a single element unless expressly disclosed, such as using the terms "before”, “after”, “single”, and other such terminology. Rather, the use of ordinal numbers is to distinguish between the elements.
- a first element is distinct from a second element, and the first element may encompass more than one element and succeed (or precede) the second element in an ordering of elements.
- embodiments of the disclosure include systems and methods for determining various supply rates and production scenarios within a gas network.
- a gas well corresponds to a well potential value that is a function of reservoir pressure, a productivity index, a specified production period, and a tested maximum gas supply rate of the gas well. Where all else is equal, the well potential value may describe the possible gas supply rate for a given gas well. However, this well potential value may not correspond to the available gas supply actually provided by the well.
- a well’s available supply such as a how different supply rates affect a reservoir’s health or congestion factors associated other nearby gas wells.
- the long-term effects of implementing a particular gas supply rate may be considered when implementing an available supply rate at the well.
- the available gas supply of a well may be influenced by a water assessment regarding different supply rates. For example, increasing a gas supply rate may also increase the water risk that larger concentrations chloride and strontium occur in a water supply.
- an actual production scenario for multiple gas wells may include multiple constraints based on congestion cycling criteria, surface facility criteria, stream prioritization with respect to a gas plant, and various supply demands.
- a gas supply manager is used within a gas supply network to determine available gas supplies as well as production scenarios based on supply and demand.
- a gas supply manager may in seconds incorporate gas well data from multiple gas wells, gas plant data from multiple gas plants, and various dynamics in order to simulate possible production scenarios.
- gas well data may include testing data (e.g., the maximum gas supply rate shown in well tests), water sampling data, solid production data, condensate data (e.g., the condensate yield at a particular well), congestion cycle data, well locations, and producing reservoir data.
- production scenarios may be generated according to various time-bases, such as yearly, monthly, or even daily.
- FIG.1 shows a schematic diagram in accordance with one or more embodiments. As shown in FIG. 1, FIG.
- FIG. 1 illustrates a well environment (100) that includes a hydrocarbon reservoir (“reservoir”) (102) located in a subsurface hydrocarbon-bearing formation (104) and a well system (106).
- the hydrocarbon-bearing formation (104) may include a porous or fractured rock formation that resides underground, beneath the earth's surface (“surface”) (108).
- the reservoir (102) may include a portion of the hydrocarbon-bearing formation (104).
- the hydrocarbon-bearing formation (104) and the reservoir (102) may include different layers of rock having varying characteristics, such as varying degrees of permeability, porosity, and resistivity.
- the well system (106) may facilitate the extraction of hydrocarbons (or “production”) from the reservoir (102).
- the well system (106) includes a wellbore (120), a well sub-surface system (122), a well surface system (124), and a well control system (126).
- the control system (126) may control various operations of the well system (106), such as well production operations, well completion operations, well maintenance operations, and reservoir monitoring, assessment and development operations.
- the control system (126) includes a computer system that is the same as or similar to that of computer system (602) described below in FIG. 6 and the accompanying description.
- the wellbore (120) may include a bored hole that extends from the surface (108) into a target zone of the hydrocarbon-bearing formation (104), such as the reservoir (102).
- An upper end of the wellbore (120), terminating at or near the surface (108), may be referred to as the “up-hole” end of the wellbore (120), and a lower end of the wellbore, terminating in the hydrocarbon-bearing formation (104), may be referred to as the “down-hole” end of the wellbore (120).
- the wellbore (120) may facilitate the circulation of drilling fluids during drilling operations, the flow of hydrocarbon production (“production”) (121) (e.g., oil and gas) from the reservoir (102) to the surface (108) during production operations, the injection of substances (e.g., water) into the hydrocarbon-bearing formation (104) or the reservoir (102) during injection operations, or the communication of monitoring devices (e.g., logging tools) into the hydrocarbon- bearing formation (104) or the reservoir (102) during monitoring operations (e.g., during in situ logging operations).
- production hydrocarbon production
- substances e.g., water
- monitoring devices e.g., logging tools
- the control system (126) collects and records wellhead data (140) for the well system (106).
- the wellhead data (140) may include, for example, a record of measurements of wellhead pressure (P) (e.g., including flowing wellhead pressure (FWHP)), wellhead temperature (T) (e.g., including flowing wellhead temperature), wellhead production rate (Q) over some or all of the life of the well (106), and water cut data.
- P wellhead pressure
- T wellhead temperature
- Q wellhead production rate
- the measurements are recorded in real-time, and are available for review or use within seconds, minutes or hours of the condition being sensed (e.g., the measurements are available within 1 hour of the condition being sensed).
- the wellhead data (140) may be referred to as “real-time” wellhead data (140).
- Real-time wellhead data (140) may enable an operator of the well (106) to assess a relatively current state of the well system (106), and make real-time decisions regarding development of the well system (106) and the reservoir (102), such as on-demand adjustments in regulation of production flow from the well.
- the well system (106) may include one or more water cut sensors.
- a water cut sensor may be hardware and/or software with functionality for determining the water content in oil, also referred to as “water cut.” Measurements from a water cut sensor may be referred to as water cut data and may describe the ratio of water produced from the wellbore (120) compared to the total volume of liquids produced from the wellbore (120).
- Water cut sensors may implement various water cut measuring techniques, such as those based on capacitance measurements, Coriolis effect, infrared (IR) spectroscopy, gamma ray spectroscopy, and microwave technology.
- Water cut data may be obtained during production operations to determine various fluid rates found in production from the well system (106). This water cut data may be used to determine water-to-gas information regarding the wellhead (130).
- a water-to-gas ratio is determined using a multiphase flow meter.
- a multiphase flow meter may use magnetic resonance information to determine the number of hydrogen atoms in a particular fluid flow. Since oil, gas and water all contain hydrogen atoms, a multiphase flow may be measured using magnetic resonance.
- the well surface system (124) includes a wellhead (130).
- the wellhead (130) may include a rigid structure installed at the “up-hole” end of the wellbore (120), at or near where the wellbore (120) terminates at the Earth's surface (108).
- the wellhead (130) may include structures for supporting (or “hanging”) casing and production tubing extending into the wellbore (120).
- Production (121) may flow through the wellhead (130), after exiting the wellbore (120) and the well sub-surface system (122), including, for example, the casing and the production tubing.
- the well surface system (124) includes flow regulating devices that are operable to control the flow of substances into and out of the wellbore (120).
- the well surface system (124) may include one or more production valves (132) that are operable to control the flow of production (134).
- a production valve (132) may be fully opened to enable unrestricted flow of production (121) from the wellbore (120), the production valve (132) may be partially opened to partially restrict (or “throttle”) the flow of production (121) from the wellbore (120), and production valve (132) may be fully closed to fully restrict (or “block”) the flow of production (121) from the wellbore (120), and through the well surface system (124).
- the well surface system (124) includes a surface sensing system (134).
- the surface sensing system (134) may include sensors for sensing characteristics of substances, including production (121), passing through or otherwise located in the well surface system (124).
- the characteristics may include, for example, pressure, temperature and flow rate of production (121) flowing through the wellhead (130), or other conduits of the well surface system (124), after exiting the wellbore (120).
- the surface sensing system (134) includes a surface pressure sensor (136) operable to sense the pressure of production (151) flowing through the well surface system (124), after it exits the wellbore (120).
- the surface pressure sensor (136) may include, for example, a wellhead pressure sensor that senses a pressure of production (121) flowing through or otherwise located in the wellhead (130).
- the surface sensing system (134) includes a surface temperature sensor (138) operable to sense the temperature of production (151) flowing through the well surface system (124), after it exits the wellbore (120).
- the surface temperature sensor (138) may include, for example, a wellhead temperature sensor that senses a temperature of production (121) flowing through or otherwise located in the wellhead (130), referred to as “wellhead temperature” (T).
- the surface sensing system (134) includes a flow rate sensor (139) operable to sense the flow rate of production (151) flowing through the well surface system (124), after it exits the wellbore (120).
- the flow rate sensor (139) may include hardware that senses a flow rate of production (121) (Q) passing through the wellhead (130).
- the well system (106) includes a reservoir simulator (160).
- the reservoir simulator (160) may include hardware and/or software with functionality for generating one or more reservoir models regarding the hydrocarbon-bearing formation (104) and/or performing one or more reservoir simulations.
- the reservoir simulator (160) may store well logs and data regarding core samples for performing simulations.
- a reservoir simulator may further analyze the well log data, the core sample data, seismic data, and/or other types of data to generate and/or update the one or more reservoir models. While the reservoir simulator (160) is shown at a well site, embodiments are contemplated where reservoir simulators are located away from well sites.
- the reservoir simulator (160) may include a computer system that is similar to the computer system (602) described below with regard to FIG.6 and the accompanying description. [0027] Turning to FIG.2, FIG.2 shows a schematic diagram in accordance with one or more embodiments.
- a gas production network may include various gas wells (e.g., gas well A (210), gas well B (220)), various gas plants (e.g., gas plant B (270), gas plant N (275)), and various user devices (e.g., user device M (230)), various control systems (e.g., control systems C (273)), various network elements (not shown), and/or a gas supply manager (e.g., gas supply manager X (250)).
- a gas well may include a well system (e.g., well system X (212)) that is similar to well system (106) described above in FIG. 1 and the accompanying description.
- various types of gas well data are collected over the gas production network, such as water sampling data (e.g., water sampling data X (213)), flowing wellhead pressure data (e.g., flowing wellhead pressure data X (214)), productivity index information (e.g., productivity index X (215)).
- the gas production network may also collect various well type parameters (e.g., well type parameters X (211)) that describe various gas well characteristics, such as reservoir type, completion type, and surface facility conditions.
- one or more gas wells are coupled to a gathering system (e.g., gathering system X (225)).
- a gathering system may include various hardware arrangements that connect flowlines from several gas wells into a single gathering line.
- a gathering system may include flowline networks, headers, pumping facilities, separators, emulsion treaters, compressors, dehydrators, tanks, valves, regulators, and/or associated equipment.
- a remote header e.g., remote headers X (216)
- a gathering system may direct various hydrocarbon fluids to a processing or testing facility, such as a gas plant.
- a gathering system manages individual fluid ratios (e.g., a particular gas-to-water ratio or condensate-to-gas ratio) as well as supply rates of oil, gas, and water. For example, a gathering system may assign a particular production value or ratio value to a particular gas well by opening and closing selected valves among the remote headers and using individual metering equipment or separators. Furthermore, a gathering system may be a radial system or a trunk line system. A radial system may bring various flowlines to a single central header. In contrast, a trunk-line system may use several remote headers to collect oil and gas from fields that cover a large geographic area.
- individual fluid ratios e.g., a particular gas-to-water ratio or condensate-to-gas ratio
- a gathering system may assign a particular production value or ratio value to a particular gas well by opening and closing selected valves among the remote headers and using individual metering equipment or separators.
- a gathering system may be a radial
- gas may be transported from one or more gas wells (e.g., gas well A (210)) to one or more gas plants (e.g., gas plant B (270)), such as through one or more mixed fluid streams (e.g., mix fluid stream (285)).
- gas plant may refer to various types of industrial plants such as a gas processing plant, a gas cycling plant, or a compressor plant.
- a gas processing plant may be a facility that processes natural gas to recover natural gas liquids (e.g., condensate, natural gasoline, and liquefied petroleum gas) and sometimes other substances such as sulfur.
- a gas cycling plant may refer to an oilfield installation coupled to a gas-condensate reservoir.
- a gas cycling plant may extract various liquids from natural gas. Consequently, the remaining dry gas may be compressed prior to return to a producing formation, e.g., to maintain reservoir pressure.
- various components of natural gas may be classified according to their vapor pressures, such as low pressure liquid (i.e., condensate), intermediate pressure liquid (i.e., natural gasoline), and high pressure liquid (i.e., liquefied petroleum gas).
- low pressure liquid i.e., condensate
- intermediate pressure liquid i.e., natural gasoline
- high pressure liquid i.e., liquefied petroleum gas
- natural gas liquids include propane, butane, pentane, hexane, and heptane.
- a compressor plant may be a facility that includes multiple compressors, auxiliary treatment equipment, and pipeline installations for pumping natural gas over long distances.
- a compressor station may also repressurize gas in large gas pipelines or to link offshore gas fields to their final terminals.
- a gas plant may include water processing equipment (e.g., water processing equipment B (272)) that includes hardware and/or software for extracting, treating, and/or disposing of water associated with gas processing. More specifically, a gas plant may extract produced water (e.g., produced water (286)) during the separation of oil or gas from a mixed fluid stream (e.g., mixed fluid stream (285)) acquired from a gas well.
- This produced water may be a kind of brackish and saline water brought to the surface from underground formations.
- oil and gas reservoirs may have water in addition to hydrocarbons in various zones underneath the hydrocarbons, and even in the same zone as the oil and gas.
- produced water is of very poor quality and may include high levels of natural salts and minerals that have dissociated from geological formations in the target reservoir.
- produced water may also acquire dissolved constituents from fracturing fluids (e.g., substances added to the fracturing fluid to help prevent pipe corrosion, minimize friction, and aid the fracking process).
- fracturing fluids e.g., substances added to the fracturing fluid to help prevent pipe corrosion, minimize friction, and aid the fracking process.
- produced water may be reused in one or more gas wells, e.g., through waterflooding where produced water is injected into the reservoirs. By injecting produced water into an injection well, the injected water may force oil and gas to one or more production wells.
- a gas plant may use various treatment technologies in order to reuse or dispose of produced water, such as conventional treatments and advanced treatments.
- conventional treatments may include flocculation, coagulation, sedimentation, filtration, and lime softening water treatment processes.
- conventional treatment processes may include functionality for removing suspended solids, oil and grease, hardness compounds, and other nondissolved water components.
- water processing equipment may include functionality for performing reverse osmosis membranes, thermal distillation, evaporation and/or crystallization processes. These advanced treatment technologies may treat dissolved solids, such as chlorides, salts, barium, strontium and sometimes dissolved radionuclides.
- produced water is sent to a wastewater treatment plant that is equipped to remove barium and strontium, e.g., using sulfate precipitation.
- water processing equipment may dispose of produced water using various water management options. For example, produced water may be disposed in salt water wells. Likewise, produced water may also be eliminated through a deep well injection.
- a gas plant may include one or more storage facilities (e.g., storage facility A (271)) and one or more control systems (e.g., control systems C (273)).
- a control system may include hardware and/or software that monitors and/or operates equipment, such as at a gas well or in a gas plant. Examples of control systems may include one or more of the following: an emergency shut down (ESD) system, a safety control system, a video management system (VMS), process analyzers, other industrial systems, etc.
- ESD emergency shut down
- VMS video management system
- a control system may include a programmable logic controller that may control valve states, fluid levels, pipe pressures, warning alarms, pressure releases and/or various hardware components throughout a facility.
- a programmable logic controller may be a ruggedized computer system with functionality to withstand vibrations, extreme temperatures, wet conditions, and/or dusty conditions, such as those around a refinery or drilling rig.
- a distributed control system may be a computer system for managing various processes at a facility using multiple control loops.
- a distributed control system may include various autonomous controllers (such as remote terminal units) positioned at different locations throughout the facility to manage operations and monitor processes.
- a distributed control system may include no single centralized computer for managing control loops and other operations.
- a SCADA system may include a control system that includes functionality for enabling monitoring and issuing of process commands through local control at a facility as well as remote control outside the facility.
- an RTU may include hardware and/or software, such as a microprocessor, that connects sensors and/or actuators using network connections to perform various processes in the automation system.
- a control system may be coupled to facility equipment.
- Facility equipment may include various machinery such as one or more hardware components that may be monitored using one or more sensors. Examples of hardware components coupled to a control system may include crude oil preheaters, heat exchangers, pumps, valves, compressors, loading racks, and storage tanks among various other types of hardware components.
- Hardware components may also include various network elements or control elements for implementing control systems, such as switches, routers, hubs, PLCs, remote terminal units, user equipment, or any other technical components for performing specialized processes.
- sensors may include pressure sensors, torque sensors, rotary switches, weight sensors, position sensors, microswitches, hydrophones, accelerometers, etc.
- a gas supply manager, user devices, and network elements may be computer systems similar to the computer system (602) described in FIG.6 and the accompanying description.
- a gas production network includes a gas supply manager (e.g., gas supply manager) that includes hardware and/or software for collecting data in real-time from various gas wells, gas plants, user devices, and other systems in the gas network.
- a gas supply manager e.g., gas supply manager
- a gas supply manager may include functionality for obtaining data throughout the gas production network, such as gas well data (e.g., gas well data X (290)).
- gas well data may include testing data of potential gas rates, flowing wellhead pressure (FWHP), water-gas ratio (WGR) data, condensate data such as condensate-gas ratio (CGR) data, productivity index (PI) data, water sampling data (e.g., levels of Chloride and Strontium concentrations), and congestion data regarding congestion cycles of gas wells.
- the gas supply manager may also collect various well type parameters (e.g., well type parameters X (211)) regarding various gas wells, such as reservoir type, completion type, and remote header information regarding the gathering system coupled to the gas wells.
- a gas supply manager includes functionality for determining and/or implementing one or more production scenarios (e.g., production scenarios D (254)) in real-time based on gas well data, well type parameters, and/or gas plant data.
- a production scenario may allocate different supply rates (e.g., by assigning a maximum production rate for a particular well) to different gas wells, different reservoirs, and/or different fields.
- a gas supply manager may analyze multiple gas wells to cluster the gas wells based on various well parameters, real-time well potentials (e.g., well potential data A (251)), congestion cycling (e.g., congestion data H (258)), peak summer production (PSP) automation, and/or different production scenarios.
- real-time well potentials e.g., well potential data A (251)
- congestion cycling e.g., congestion data H (258)
- PSP peak summer production
- the gas supply manager may determine well potential values for individual gas wells, as well as field potential values based on well potentials for multiple wells in a single field.
- the gas supply manager may automatically prioritize production instantaneously by incorporating various time-dependent gas and condensate demand scenarios into a production scenario.
- the gas supply manager may analyze many aspects related to well production dynamics such as well productivity, supply demands (e.g., supply demand data B (252)), condensate yields (e.g., condensate-to-gas ratio data F (256)), water analysis (e.g., water-to-gas ratio data P (260)), solids production, as well as congestion cycles.
- a gas supply manager automatically generates and implements a production scenario as well as implement prioritization among various gas wells.
- a gas supply manager includes functionality for generating periodic production scenarios, such as monthly scenarios.
- a user device e.g., user device M (230)
- the user device may be a personal computer, a handheld computer device such as a smartphone or personal digital assistant, or a human machine interface (HMI).
- HMI human machine interface
- a user may interact with a user interface (e.g., user interface O (232)) to change a time interval of a production period, the amount of solids and produced water mitigated in a production scenario, scenario parameters to maintain reservoir health, and amounts of water encroachment in a reservoir.
- a user interface e.g., user interface O (232)
- the gas supply manager may maintain well performance health, manage production in congested areas, and raise supply dynamic awareness by presenting well clusters and associated information in a graphical user interface.
- a gas supply manager may provide agility and flexibility in determining and modifying production scenarios.
- a production scenario is generated by a gas supply manager upon obtaining a request (e.g., request for production scenario (233)) from a user device and using various predetermined criteria (e.g., reservoir pressure criteria C (253), water risk criteria E (255)).
- the request may be a network message transmitted between a user device and a gas supply manager that identifies various gas wells, gas plants, gathering systems, a predetermined time frame, and other parameters for a requested production scenario.
- the gas supply manager includes functionality for transmitting commands (e.g., command Y (295)) to one or more control systems to implement a particular production scenario.
- the gas supply manager X may transmit a network message over a machine-to-machine protocol to the well system X (212) in gas well A (210) or one or more of control systems C (273) in gas plant B (270).
- a command may be transmitted periodically, based on a user input, or automatically based on changes in gas well data or gas plant data.
- FIGs.3A-3B illustrate an example of managing various gas wells and available gas supplies using a user interface in accordance with one or more embodiments.
- a graphical user interface (GUI) (310) may be provided by a gas supply manager using a display device A (301) of a user device (not shown).
- the GUI (310) may provide information regarding various reservoirs (i.e., a reservoir list (331)) that includes a reservoir A (332), a reservoir B (333), a reservoir C (334), and a reservoir D (335)) as well as available gas wells (351) based on the reservoir selection.
- a user may select reservoir A (332), which subsequently populates the available gas wells (351) with various gas wells coupled to reservoir A (332) (i.e., gas well A (352), gas well B (353), gas well C (354), gas well D (355), and gas well E (356)).
- the user further selects gas well B (353) causing the GUI (310) to present gas well B’s information (371).
- a gas supply manager provides an action menu (311) to a user for determining and implementing one or more production scenarios.
- the action menu (311) may be a GUI window that enables a user to adjust various predetermined criteria for determining available supply rates from different gas wells. For example, a user may use the selection for the production period adjustment (312) in the action menu (311) to adjust the starting date and ending date of a production period for a production scenario.
- the user may also use the selection for the water risk criteria adjustment (313) to modify water risk criteria for different water risk levels and their associated gas supply rates.
- gas plants may have different supply demands throughout the year, and thus a user may modify the supply target for a particular production scenario using the selection for the supply target adjustment (314).
- the user may modify reservoir pressure values among reservoir pressure criteria (e.g., reservoir pressure criteria adjustment (315)) using the selection for the reservoir pressure criteria adjustment.
- the GUI (310) may provide commands to implement a selected production scenario.
- a user may select two reservoirs, i.e., reservoir A (332) and reservoir B (333), for a particular production scenario.
- the user may identify different gas wells that will contribute to the available supplies in the production scenario, i.e., gas well B (353), gas well C (354) gas well D (355), gas well G (358), gas well H (359), and gas well I (360).
- gas well B gas well
- gas well C gas well C
- gas well D 355
- gas well G gas well G
- gas well H 359
- gas well I 360
- the user may exclude gas well A (352), gas well F (357), gas well E (356), and gas well J (361) from the production scenario, e.g., one or more of these wells may be shut-in wells for the specified production period.
- FIGs. 1, 2, and 3A-3B shows various configurations of components, other configurations may be used without departing from the scope of the disclosure. For example, various components in FIGs. 1, 2, and 3A-3B may be combined to create a single component. As another example, the functionality performed by a single component may be performed by two or more components. [0043] Turning to FIG. 4, FIG. 4, FIG.
- FIG. 4 shows a flowchart in accordance with one or more embodiments. Specifically, FIG. 4 describes a general method for determining and/or implementing production scenarios in accordance with one or more embodiments.
- One or more blocks in FIG.4 may be performed by one or more components (e.g., gas supply manager X (250)) as described in FIGs. 1, 2, and 3A-3B. While the various blocks in FIG. 4 are presented and described sequentially, one of ordinary skill in the art will appreciate that some or all of the blocks may be executed in different orders, may be combined or omitted, and some or all of the blocks may be executed in parallel. Furthermore, the blocks may be performed actively or passively. [0044] In Block 400, gas well data are obtained regarding various gas wells in accordance with one or more embodiments.
- a gas supply manager may collected various types of gas well data that may include flowing wellhead pressure (FWHP) data, water sampling data, productivity index information for the nearby geological region, tested gas rate data (e.g., the maximum gas supply rate based on measurements acquired at the gas well), etc.
- the gas well data may also include condensate-to-gas ratio (CGR) data and water-to-gas ratio (WGR) data.
- the gas supply manager may also obtain gas plant data, such as supply demand data regarding the amount of gas supply requested or predicted at one or more gas plants.
- water-to-gas and condensate-to-gas ratio associated to each well are obtained from one or more well database tables.
- water-to-gas data and condensate-to-gas data may be acquired from periodic separator testing performed at individual well sites.
- a gas supply manager uses gas well data to strategically prioritization to manage gas production network limitations.
- gas demand dynamicity may dictate flexible gas supply generation while satisfying water and condensate handling limitations for one or more gas plants.
- strategically factor in sustainability of well production to address these limitations while maintaining reservoir health to achieve an optimal strategic depletion of gas reserves.
- various well potential values are determined for various gas wells based on gas well data in accordance with one or more embodiments.
- well potential values correspond to one or more benchmarks against real-time gas well data (e.g., production data) from field sensors.
- well potential values may provide predicted gas production rate based on field type, reservoir type, and completion type.
- well potential values may be a function of one or more gas supply rates, one or more flowing wellhead pressures, and a productivity index.
- productivity index may be a measure of the maturity of a homogeneous source section in a geological region of interest coupled to a gas well.
- a productivity index may be determined based on the quantity of free hydrocarbons (gas + oil) in the geological region and the quantity of thermally generated (e.g., cracked) hydrocarbons.
- a productivity index less than 0.1 may be an immature geological region
- a value between 0.1 and 0.3 may be a geological region usable for oil generation
- a value above 0.3 may be a geological region for natural gas generation.
- well potential values may emulate actual production data at the corresponding gas wells.
- the well potential may correspond to a natural gas supply rate over time (e.g., as measured in a million standard cubic feet per day (MMSCFD))
- gas rate corresponds to a natural gas supply rate
- FWHP corresponds to flowing wellhead pressure (e.g., as measured in pounds per square in gauge (psig))
- the production time period corresponds to a particular time period within a production scenario (such as a user-defined time period)
- PI corresponds to a productivity index (e.g., as measured in mg/g of rock).
- a current well potential may be determined as a linear discounting of maximum tested potential.
- well potential values may be tailored to different reservoir types and completion types to emulate current production potential measured on-field.
- available supply rates are determined based on various well potential values, one or more predetermined reservoir pressure criteria, and one or more water risk criteria in accordance with one or more embodiments.
- various systematic rules may be applied to well potential values to account for reservoir pressure conditions and water assessment constraints.
- the reservoir pressure criteria may favor production from gas wells with higher respective reservoir pressures.
- reservoir pressure values may apply supply constraints to wells with lower reservoir pressures.
- reservoir pressure criteria correspond to different predetermined reservoir pressure tiers.
- one reservoir pressure tier may correspond to a shut-in well where the shut-in well is intended to increase reservoir pressure during a production period.
- Another reservoir pressure tier may correspond to a gas well that produces a maximum gas supply rate without any constraints, e.g., due to a very healthy reservoir pressure nearby.
- Another reservoir pressure tier may correspond to a gas well that produces a gas supply rate that is less than a maximum gas supply rate in order to preserve or increase reservoir health.
- water risk criteria may correspond to different water assessment levels.
- water assessment levels may be automatically assigned to a gas well (e.g., for different production rates) using predetermined rules that depend on water-to-gas ratios (WGR), chloride and strontium concentrations, and other risk factors.
- WGR water-to-gas ratios
- water assessment levels are divided into the following categories: (1) high water risk; (2) potential water risk; (3) an acceptable water risk; and (4) a low water risk.
- water risk criteria may be applied to well potential values to constrain production rates with high and potential water risk levels.
- chloride and strontium values may strongly correlate to a presence of formation water. In contrast, other contaminants produced while fracking may not provide meaningful indications of formation water.
- the well potential values are similar to the well potential values described in Block 410 above and the accompanying description.
- the reservoir pressure criterion and water risk criterion may be dimensionless quantities.
- available supply rates are determined using one or more solid production criteria.
- a solid production criterion may correspond to a solid production constraint, where solids production prone wells are specified a maximum available supply rate based on an established solid free rate during a respective well’s initial testing.
- the solid production criteria may specify that the maximum available supply rate where the gas supply rate for a gas well does not exceed previous conditions nor solid free rates (e.g., whichever rate is lower).
- available supply rates are determined using one or more congestion cycling criteria. For example, some gas fields may include wells drilled in relatively close proximity to each other. To mitigate production interference or arrive at a uniform field depletion, gas wells may be grouped into different production cycles. In particular, congestion cycling may apply to wells spaced less than 1 km from each other.
- congestion cycling criteria may correspond to user-specified percentages of maximum available supply rates that relax wells with nearby offset wells during one cycle in order to produce at higher percentages the next cycle.
- production cycles may correspond to different months, e.g., production cycles may change on a month- to-month basis.
- available supply rates are determined using one or more surface facility criteria.
- surface facility criteria may correspond to surface facilities constraints, such that a minimum supply rate may be specified on a per well basis.
- surface facilities constraints may be used to achieve a minimum stream velocity that prevents corrosion, water accumulation, and slugging at a well.
- surface facility criteria may also include an option to shut-in a particular well with low supply priority in a production scenario.
- a well may be shut-in in order to increase reservoir pressure and thus improve the well’s well potential value.
- surface facility criteria may also modify available supply rates of certain wells with high downstream pressures at high supply rates that may trigger safety alarms.
- a surface facility criterion may designate a well with a recommended safe gas supply rate.
- an available supply rate is adjusted based on gas reservoir strategic prioritization. For example, various gas plants may have predetermined streams with higher priority, which overrides an available supply rate on a stream level to satisfy one or more strategic prioritization production requirements.
- one or more production scenarios are determined based on one or more available supply rates and one or more supply targets in accordance with one or more embodiments.
- a production scenario may describe a production scenario rate that accounts for a distribution of various available supply rates among multiple target wells. As such, this supply distribution may be based on supply demands and gas plant allocations.
- a final monthly production scenario rate and peak-summer- production amounts may be determined based on user-defined targets in accordance to a business plan non-associated gas (NAG) supply rate that considers reserves, supply, and demand.
- NAG non-associated gas
- Equation 3 may use final maximum single wells avails or gas supplies after applying a pre-defined set of conditions associated with water risk, reservoir pressure tiers, condensate production, and congestion.
- Equation 3 may address gas demand dynamicity by imposing a ratio of max single wells avails to total target avails with the latter determined by gas demand.
- a well capable of producing more sustainable gas supplies should provide higher gas supplies than a well with a lower sustainable capability.
- a gas supply manager generates monthly production scenarios, peak summer production (PSP) rates.
- the gas supply manager may perform compensation to one or more gas wells or modify a production scenario to achieve sustainable production policies.
- the gas supply manager may modify productions scenarios in instantaneous manner, e.g., prior to deploying the production scenario or while the production scenario is being implemented among various gas wells and gas plants.
- a gas supply manager may provide interactive supply rate dynamics, where production scenarios may be generated to reduce or increase condensate-gas ratios (CGR), reduce or increase produced water (e.g., based on gas plant water handling capacity), etc.
- CGR condensate-gas ratios
- produced water e.g., based on gas plant water handling capacity
- a production scenario is implemented and adjusted using various remote headers at one or more gathering systems. For example, available supply rates may correspond to different remote headers.
- a minimum flow rate per remote header may be enforced, e.g., using control systems or a gas supply manager, where gas wells may not exceed their previously determined max available supply rate.
- one or more supply adjustments are determined based on one or more production scenarios in accordance with one or more embodiments.
- a gas network may implement the production scenario using various supply adjustments. This may include modifying the supply rates at different gas wells and coordinating production constraints with gathering systems and gas plants. For example, a supply adjustment may specify which gas wells will produce in a production scenario as well as actual supply rates for each gas well.
- one or more commands are transmitted to implement one or more supply adjustments in accordance with one or more embodiments.
- natural gas supplies are the focus rather than merely maximizing oil production utilized in other management networks.
- some embodiments use various data types and data processing techniques to tackle various supply dynamics and supply constraints. For example, water sampling data, well congestion data, and fluid stream prioritization may be used to optimize a particular production scenario.
- some embodiments provide specific well-by-well supplies based on user inputs of gas supply targets, minimum flowrates per well, congestion cycling, and production scenario capabilities. Thus, these production scenarios may prioritize certain streams or increase/reduce condensate, produced water, or solid production.
- some embodiments provide a gas management program to achieve various sustainability goals as well as transparency that is configurable based on changes to specific metrics. [0063] Turning to FIG. 5, FIG.
- FIG. 5 provides an example of a production scenario in accordance with one or more embodiments. The following example is for explanatory purposes only and not intended to limit the scope of the disclosed technology.
- FIG. 5 illustrates a production scenario X (500) for supplying a gas plant Z (570) using various gas wells (i.e., gas well A (511), gas well B (512), gas well C (513), gas well D (514), gas well E (515)) from two reservoirs, i.e., reservoir X (510) and reservoir Y (520).
- various gas wells i.e., gas well A (511), gas well B (512), gas well C (513), gas well D (514), gas well E (515)
- reservoir X i.e., reservoir X (510) and reservoir Y (520).
- the total available supplies for the gas plant Z (570) is based on five fluid streams from the gas wells (511, 512, 513, 514, 515), i.e., fluid stream A (541), fluid stream B (542), fluid stream C (543), fluid stream D (544), and fluid stream E (545).
- the available supply rate from fluid stream A (541) is based on well potential A (561), pressure constraints A (571), and water risk constraints A (581).
- the available supply rate is based on well potential B (562), pressure constraints B (572), and water risk constraints B (582).
- For fluid stream C (543), the available supply rate is based on well potential C (563), pressure constraints A (573), and water risk constraints C (583).
- the available supply rate is based on well potential D (564), pressure constraints D (574), and water risk constraints D (584).
- the available supply rate is based on well potential E (565), pressure constraints A (575), and water risk constraints A (585).
- the production scenario X (500) is based on reservoir criteria specified by a user for determining the pressure constraints (571, 572, 573, 574, 574) and water risk criteria for determining the water risk constraints (581, 582, 583, 584, 585).
- FIG. 6 is a block diagram of a computer system (602) used to provide computational functionalities associated with described algorithms, methods, functions, processes, flows, and procedures as described in the instant disclosure, according to an implementation.
- the illustrated computer (602) is intended to encompass any computing device such as a high performance computing (HPC) device, a server, desktop computer, laptop/notebook computer, wireless data port, smart phone, personal data assistant (PDA), tablet computing device, one or more processors within these devices, or any other suitable processing device, including both physical or virtual instances (or both) of the computing device.
- HPC high performance computing
- PDA personal data assistant
- the computer (602) may include a computer that includes an input device, such as a keypad, keyboard, touch screen, or other device that can accept user information, and an output device that conveys information associated with the operation of the computer (602), including digital data, visual, or audio information (or a combination of information), or a GUI.
- the computer (602) can serve in a role as a client, network component, a server, a database or other persistency, or any other component (or a combination of roles) of a computer system for performing the subject matter described in the instant disclosure.
- the illustrated computer (602) is communicably coupled with a network (630).
- one or more components of the computer (602) may be configured to operate within environments, including cloud-computing-based, local, global, or other environment (or a combination of environments).
- the computer (602) is an electronic computing device operable to receive, transmit, process, store, or manage data and information associated with the described subject matter.
- the computer (602) may also include or be communicably coupled with an application server, e-mail server, web server, caching server, streaming data server, business intelligence (BI) server, or other server (or a combination of servers).
- BI business intelligence
- the computer (602) can receive requests over network (630) from a client application (for example, executing on another computer (602)) and responding to the received requests by processing the said requests in an appropriate software application. In addition, requests may also be sent to the computer (602) from internal users (for example, from a command console or by other appropriate access method), external or third-parties, other automated applications, as well as any other appropriate entities, individuals, systems, or computers. [0069] Each of the components of the computer (602) can communicate using a system bus (603).
- any or all of the components of the computer (602), both hardware or software (or a combination of hardware and software), may interface with each other or the interface (604) (or a combination of both) over the system bus (603) using an application programming interface (API) (612) or a service layer (613) (or a combination of the API (612) and service layer (613).
- the API (612) may include specifications for routines, data structures, and object classes.
- the API (612) may be either computer-language independent or dependent and refer to a complete interface, a single function, or even a set of APIs.
- the service layer (613) provides software services to the computer (602) or other components (whether or not illustrated) that are communicably coupled to the computer (602).
- the functionality of the computer (602) may be accessible for all service consumers using this service layer.
- Software services such as those provided by the service layer (613), provide reusable, defined business functionalities through a defined interface.
- the interface may be software written in JAVA, C++, or other suitable language providing data in extensible markup language (XML) format or other suitable format.
- XML extensible markup language
- alternative implementations may illustrate the API (612) or the service layer (613) as stand-alone components in relation to other components of the computer (602) or other components (whether or not illustrated) that are communicably coupled to the computer (602).
- the computer (602) includes an interface (604). Although illustrated as a single interface (604) in FIG. 6, two or more interfaces (604) may be used according to particular needs, desires, or particular implementations of the computer (602).
- the interface (604) is used by the computer (602) for communicating with other systems in a distributed environment that are connected to the network (630).
- the interface (604 includes logic encoded in software or hardware (or a combination of software and hardware) and operable to communicate with the network (630).
- the interface (604) may include software supporting one or more communication protocols associated with communications such that the network (630) or interface's hardware is operable to communicate physical signals within and outside of the illustrated computer (602).
- the computer (602) includes at least one computer processor (605). Although illustrated as a single computer processor (605) in FIG. 6, two or more processors may be used according to particular needs, desires, or particular implementations of the computer (602). Generally, the computer processor (605) executes instructions and manipulates data to perform the operations of the computer (602) and any algorithms, methods, functions, processes, flows, and procedures as described in the instant disclosure.
- the computer (602) also includes a memory (606) that holds data for the computer (602) or other components (or a combination of both) that can be connected to the network (630).
- memory (606) can be a database storing data consistent with this disclosure. Although illustrated as a single memory (606) in FIG. 6, two or more memories may be used according to particular needs, desires, or particular implementations of the computer (602) and the described functionality. While memory (606) is illustrated as an integral component of the computer (602), in alternative implementations, memory (606) can be external to the computer (602).
- the application (607) is an algorithmic software engine providing functionality according to particular needs, desires, or particular implementations of the computer (602), particularly with respect to functionality described in this disclosure.
- application (607) can serve as one or more components, modules, applications, etc. Further, although illustrated as a single application (607), the application (607) may be implemented as multiple applications (607) on the computer (602). In addition, although illustrated as integral to the computer (602), in alternative implementations, the application (607) can be external to the computer (602). [0074] There may be any number of computers (602) associated with, or external to, a computer system containing computer (602), each computer (602) communicating over network (630). Further, the term “client,” “user,” and other appropriate terminology may be used interchangeably as appropriate without departing from the scope of this disclosure. Moreover, this disclosure contemplates that many users may use one computer (602), or that one user may use multiple computers (602).
- the computer (602) is implemented as part of a cloud computing system.
- a cloud computing system may include one or more remote servers along with various other cloud components, such as cloud storage units and edge servers.
- a cloud computing system may perform one or more computing operations without direct active management by a user device or local computer system.
- a cloud computing system may have different functions distributed over multiple locations from a central server, which may be performed using one or more Internet connections.
- cloud computing system may operate according to one or more service models, such as infrastructure as a service (IaaS), platform as a service (PaaS), software as a service (SaaS), mobile "backend” as a service (MBaaS), serverless computing, artificial intelligence (AI) as a service (AIaaS), and/or function as a service (FaaS).
- IaaS infrastructure as a service
- PaaS platform as a service
- SaaS software as a service
- MaaS mobile “backend” as a service
- serverless computing serverless computing
- AI artificial intelligence
- AIaaS artificial intelligence as a service
- FaaS function as a service
- any means-plus-function clauses are intended to cover the structures described herein as performing the recited function(s) and equivalents of those structures.
- any step-plus-function clauses in the claims are intended to cover the acts described here as performing the recited function(s) and equivalents of those acts. It is the express intention of the applicant not to invoke 35 U.S.C. ⁇ 112(f) for any limitations of any of the claims herein, except for those in which the claim expressly uses the words “means for” or “step for” together with an associated function.
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| US12534981B2 (en) | 2022-12-12 | 2026-01-27 | Saudi Arabian Oil Company | Detecting interference between hydrocarbon wells |
| US20240191616A1 (en) * | 2022-12-12 | 2024-06-13 | Saudi Arabian Oil Company | Monitoring and managing a gas production system |
| CN116127874B (en) * | 2023-02-15 | 2023-12-19 | 西南石油大学 | Method for evaluating combination of formation pressure of condensate well and single well control reserve |
| US12488293B2 (en) | 2023-06-05 | 2025-12-02 | Schlumberger Technology Corporation | Managing facility and production operations across enterprise operations to achieve sustainability goals |
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