Power generation from produced water

By converting the heat energy of produced water into electrical energy using an on-site power generation system, the economic challenges of marginal oilfields are addressed, reducing costs and potentially reviving uneconomic oil production.

WO2025076188A1PCT designated stage expired Publication Date: 2025-04-10CAMERSON INT CORP +2
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Patent Information

Application Number
PCT/US2024/049749
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-10-03
Filing Date
2024-10-03
Publication Date
2025-04-10

AI Technical Summary

Technical Problem

Marginal oilfields face economic challenges due to high water production costs, leading to uneconomic oil production and abandonment of wells, which incurs additional costs.

Method used

A method and system for power generation from produced water, involving extracting production fluid from an oil well, diverting the water to an on-site power generation system, and converting the heat energy of the water to electrical energy using a Rankine cycle or similar heat energy capture system.

Benefits of technology

This approach reduces operational costs by utilizing the energy from produced water to generate electricity, potentially making marginal oilfields economically viable, extending the life of production wells, and creating a value stream from produced water.

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Abstract

Aspects of the disclosure provide for power generation from produced water. A method includes extracting production fluid from an oil well, wherein the production fluid includes water, wherein the water is at a first input temperature. The method includes diverting at least the water of the production fluid to an on-site power generation system. The method includes converting heat energy of the water to electrical energy at the on-site power generation system, wherein after the converting the water is a second output temperature lower than the first input temperature.
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Description

POWER GENERATION FROM PRODUCED WATERPRIORITY INFORMATION

[0001] The present Application for Patent claims priority under 35 U.S.C. §119 to United States Provisional Patent Application No. 63 / 587,536, filed October 3, 2023, and entitled “POWER GENERATION FROM PRODUCED WATER,” which is assigned to the assignee hereof and hereby expressly incorporated by reference herein.BACKGROUNDField of the Disclosure

[0002] The disclosure relates to power generation.Description of Related Art

[0003] Marginal oilfields produce relatively high percentages of water compared to oil. The extra volumes of water have a cost connected to handling, separation, asset integrity and disposal. There is a point of increasing water production were producing the oil becomes uneconomic and the wells / assets are usually abandoned, which itself has a cost.

[0004] A marginal oilfield refers to an oil field that has been discovered, but that is not currently producing enough net income to justify its development. These oil fields may contain small reserves of hydrocarbons that are not economically viable under existing technical or market conditions. The oil fields may be mature oil fields with declining production. However, changes in technology, market prices, or economic factors could render a marginal oilfield commercially viable in the future.

[0005] In some cases, for example, due to the small reserves of hydrocarbons, marginal oilfields produce relatively high percentages of water compared to oil. The extra volumes of water have a cost connected to handling, separation, asset integrity, and disposal. There is a point of increasing water production costs at which producing the oil becomes uneconomic and the wells and / or assets are abandoned, where abandoning of the well and / or asserts incurs still additional costs.

[0006] Accordingly, there exists a need for further improvements in power generation.SUMMARY

[0007] The disclosure provides techniques for power generation from produced water.

[0008] Some aspects provide a method. The method includes extracting production fluid from an oil well, wherein the production fluid includes water. The water is at a first input temperature. The method includes diverting at least the water of the production fluid to an on-site power generation system. The method includes converting heat energy of the water to electrical energy at the on-site power generation system. After the converting the water is a second output temperature lower than the first input temperature

[0009] Some aspects provide a system. The system includes a wellbore. The system includes an on-site power generation system. The system includes oil and gas equipment. The oil and gas equipment is configured to extract production fluid from the wellbore, the production fluid comprising hydrocarbons and water at a first input temperature. The oil and gas equipment is configured to divert at least the water of the production fluid to the on-site power generation system. The on-site power generation system is configured to convert heat energy of the water to electrical energy. After the converting the water is a second output temperature lower than the first input temperature.

[0010] Some aspects provide a system. The system includes a wellbore. The system includes an on-site power generation system. The system includes oil and gas equipment. The oil and gas equipment are configured to extract production fluid from the wellbore, the production fluid comprising hydrocarbons and water at a first input temperature. The oil and gas equipment are configured to divert at least the water of the production fluid to the on-site power generation system. The on-site power generation system includes a heat exchanger. The heat exchanger is configured to use the water to heat a second fluid. Exiting the heat exchanger the water is at a second output temperature lower than the first input temperature. The on-site power generation system includes a turbine. The turbine is configured to turn in response to the heating of the second fluid, converting heat energy of the heated second fluid to mechanical energy. The on-site power generation system includes a generator. The generator is configured to convert the mechanicalenergy generated by the turbine to electrical energy. The generator is configured to supply the electrical energy to the one or more equipment. The on-site power generation system includes a condenser. The condenser is configured to condense the heated second fluid after the heated second fluid passes through the turbine. The on-site power generation system includes a pump. The pump is configured to pump the condensed second fluid to the heat exchanger.

[0011] The following description and the appended figures set forth certain features for purposes of illustration.BRIEF DESCRIPTION OF DRAWINGS

[0012] The figures show several embodiments of the system according to the disclosure.

[0013] Figure 1 illustrates an example drilling site and wellbore system.

[0014] Figure 2 illustrates an example system for power generation from produced water at an oilfield.

[0015] Figure 3 is a flow diagram depicting an example method for power generation from produced water.DETAILED DESCRIPTION

[0016] The disclosure provides techniques, methods, systems, apparatus, and computer readable media for power generation from produced water.

[0017] In some configurations, a method of generating power includes harvesting energy from produced water from an oilfield well. The produced water can come from deep reservoirs, in some cases, and contains a large amount of geothermal energy. The method can include using the harvested energy to generate electricity. The method can include using the harvested energy or electricity for platform power, storage, and / or export.

[0018] According to certain aspects, energy from water produced from an oilfield well may be harvested. The harvested energy may used to generate electricity. The harvested energy or electricity may be used to power oilfield equipment, stored, and / or exported. Thus, the harvested energy from the produced water may be used to reduce costs, by using the energy in operations,stored for later use and / or for other operations, and / or exported or sold to generate additional revenue. As such, the efficiency and profitable of the oilfield well may be increased.

[0019] In the following description, numerous details are set forth to provide an understanding of some embodiments of the present disclosure. It is to be understood that the following disclosure provides many different aspects, or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the disclosure. These are, of course, merely examples and are not intended to be limiting. However, it will be understood by those of ordinary skill in the art that the system and / or methodology may be practiced without these details and that numerous variations or modifications from the described aspects are possible. This description is not to be taken in a limiting sense, but rather made merely for the purpose of describing general principles of the implementations. The scope of the described implementations should be ascertained with reference to the issued claims.

[0020] As used herein, the terms “connect”, “connection”, “connected”, “in connection with”, and “connecting” are used to mean “in direct connection with” or “in connection with via one or more elements”; and the term “set” is used to mean “one element” or “more than one element”. Further, the terms “couple”, “coupling”, “coupled”, “coupled together”, and “coupled with” are used to mean “directly coupled together” or “coupled together via one or more elements”. As used herein, the terms "up" and "down"; "upper" and "lower"; "top" and "bottom"; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some elements. Commonly, these terms relate to a reference point at the surface from which drilling operations are initiated as being the top point and the total depth being the lowest point, wherein the well (e.g., wellbore, borehole) is vertical, horizontal or slanted relative to the surface.Example Drilling Site and Wellbore System

[0021] As discussed above, aspects of the present disclosure relate to power generation from water produced at an oil well. In some aspects, an oil well may be an onshore oil well, an offshore oil, an oil derrick, a fracking oil well, a vertical well, a horizontal well, a slanted well, or other type of oil well. Figure 1 illustrates an example drilling site and wellbore system 100 in an example geologic environment 120, in which aspects of the present disclosure may be applied. It should be understood, however, that the techniques provided herein for power generation from producedwater may be used for any type of well or oil field in any geologic environment.

[0022] In some examples, a well may generally include a wellbore drilled into the ground to reach a reservoir, the geological formation containing the hydrocarbons. The well may generally include a casing, such as steel pipes that line the wellbore to support it and prevent contamination of groundwater. The casing may be installed in sections including a surface casing, an intermediate casing, and a production casing. The surface casing may be a layer cemented in place to protect freshwater zones. The intermediate casing may be used in deeper sections to manage pressure and stability. The production casing may be a final casing that allows oil to flow to the surface. The well may include tubing, such as an inner pipe, within the casing, through which production fluid is transported from the reservoir to the surface. The production casing may include perforations, small holes that allow oil to enter the tubing from the surrounding rock formations. The well may include a production tree including set of valves and fittings at the surface that controls the flow of oil and gas from the well. The well may include a pump, such as a pumpjack which is a mechanical device that lifts oil from the well to the surface.

[0023] As shown in Figure 1, the example drilling site and wellbore system 100 may include equipment 127 and equipment 128 associated with a well that includes a substantially horizontal portion that may intersect with one or more fractures 129. For example, consider a well in a shale formation that may include natural fractures, artificial fractures (e.g., hydraulic fractures) or a combination of natural and artificial fractures. As an example, a well may be drilled for a reservoir that is laterally extensive. In such an example, lateral variations in properties, stresses, etc., may exist where an assessment of such variations may assist with planning, operations, etc. to develop the reservoir (e.g., via fracturing, injecting, extracting, etc.). The equipment 127 and / or equipment 128 may include components, a system, systems, etc., for fracturing, seismic sensing, analysis of seismic data, nuclear magnetic resonance (NMR) logging, assessment of one or more fractures, injection, production, etc. The equipment 127 and / or equipment 128 may provide for measurement, collection, communication, storage, analysis, etc. of data such as, for example, formation data, fluid data, production data (e.g., for one or more produced resources), etc.

[0024] In some aspects, equipment is land-based. In some aspects, equipment is suitable for use in an offshore system. In some aspects, equipment may be mobile, for example carried by avehicle. In some aspects, equipment can be assembled, disassembled, transported and reassembled, etc.

[0025] In some aspects, equipment includes a platform, a derrick, a crown block, a line, a traveling block assembly, drawworks, and a landing (e.g., a monkeyboard). The line may be controlled at least in part via the drawworks such that the traveling block assembly travels in a vertical direction with respect to the platform. By drawing the line in, the drawworks may cause the line to run through the crown block and lift the traveling block assembly skyward away from the platform; whereas, by allowing the line out, the drawworks may cause the line to run through the crown block and lower the traveling block assembly toward the platform. Where the traveling block assembly carries pipe (e.g., casing, etc.), tracking of movement of the traveling block may provide an indication as to how much pipe has been deployed.

[0026] According to certain aspects, the well site includes a heat energy capture system 200 for harvesting heat energy from water produced from the well.Example Power Generation from Produced Water

[0027] Figure 2 depicts an example heat energy capture system 200 for power generation from water produced at an oil well. In some aspects, the system 200 extracts geothermal energy from water produced from a production well 205. The system 200 may use the extracted geothermal energy to create electricity. In some aspects, the created electricity may then be used to power operations associated with the production well 205 or to power other operations. In some aspects, the created electricity may be stored for later use. In some aspects, the created electricity may be sold.

[0028] The re-use and / or sale of the electricity harvested from produced water of the production well 205 may reduce or offset the production costs of the production well 205 and may reduce the overall carbon footprint of the operation of the production well 205. This may allow marginal well to become feasible for production use, may extend the lifetimes of production wells, and creates a value stream from the produced water.

[0029] According to certain aspects, the energy from the produced water may be harvested using a rankine cycle, as shown in the heat energy capture system 200 in Figure 2. It should beunderstood that while a rankine cycle is depicted in Figure 2 to harvest the heat energy of the produced water, that Figure 2 is only one example of a rankine cycle and that variations of the system shown in Figure 2 may be used to implement a rankine cycle for harvesting the heat energy. Further, in other aspects the heat energy of the produced water may be harvested using any techniques of capturing heat energy from water.

[0030] A rankine cycle is an idealized thermodynamic cycle that describes the process by which heat engines convert heat into mechanical energy. As shown, the primary fluid, water, from the production well 205 may be sent to a heat exchanger 210. In some aspects, the water is diverted from the production well, to the heat exchanger 210, after initial oil / water separation.

[0031] The water sent to the heat exchanger 210 is at an input temperature, Tin. In some aspects, at the heat exchanger 210, a secondary fluid may be heated by the heat exchange from the primary fluid, thereby transferring heat energy from the produced water to the secondary fluid. After passing through the heat exchanger 210, the water, now at the lower output temperature, Tout, may then be re-injected to the well or otherwise disposed of.

[0032] The heated secondary fluid may then cycle through a turbine 215. For example, the heating of the secondary fluid may generate a gas or steam that expands through the turbine 215, thus converting the harvested heat energy to mechanical work, which may then be converted to electrical energy at the generator 220.

[0033] After passing through the turbine 215, the gas or stream may enter the condenser 225, where it is cooled and condensed back into liquid form. The pump 230 may then pump the secondary fluid back to the heat exchanger 210.

[0034] According to certain aspects, the harvested electrical energy at the generator 220 may be used to power equipment associated with the production well 205 operations. According to certain aspects, the harvested electrical energy at the generator 220 may be stored at energy storage 235 for later use. According to certain aspects, the harvested electrical energy at the generator 220 may be provided to an energy grid 240 (e.g., and sold).

[0035] According to certain aspects, the site may additionally be equipped with photovoltaic solar panels 235 to collect additional energy that can be captured at the site to further enhance theviability of the marginal oil well.

[0036] According to certain aspects, the system may further harvest waste heat energy from one or more gas turbines. In one example, an additional heat exchanger may be included after the turbine 215.Example Operations for Power Generation from Produced Water

[0037] Figure 3 is a flow diagram depicting an example operations 300 for power generation from produced water at an oil well, such as a marginal well.

[0038] As shown, the operations 300 may include, at operation 305, extracting production fluid from an oil well, wherein the production fluid includes water. The water is at a first input temperature. The production fluid may also include hydrocarbons.

[0039] As shown, the operations 300 may include, optionally, at operation 310, separating the water from the production fluid.

[0040] As shown, the operations 300 may include, at operation 315, diverting at least the water of the production fluid to an on-site power generation system.

[0041] As shown, the operations 300 may include, at operation 320, converting heat energy of the water to electrical energy at the on-site power generation system. After the converting the water is a second output temperature lower than the first input temperature.

[0042] As shown, converting heat energy of the water to electrical energy at the on-site power generation system, at operation 320, may include, optionally, at operation 325, inputting the water to a heat exchanger.

[0043] As shown, converting heat energy of the water to electrical energy at the on-site power generation system, at operation 320, may include, optionally, at operation 330, heating, with the water, a second fluid at the heat exchanger.

[0044] As shown, converting heat energy of the water to electrical energy at the on-site power generation system, at operation 320, may include, optionally, at operation 335, using the heatedsecond fluid to turn a turbine. Turning the turbine convers heat energy of the heated second fluid to mechanical energy.

[0045] As shown, converting heat energy of the water to electrical energy at the on-site power generation system, at operation 320, may include, optionally, at operation 340, converting the mechanical energy to electrical energy at a generator.

[0046] As shown, the operations 300 may include, optionally, at operation 345, after using the heated second fluid to turn the turbine, condensing the heated second fluid at a condenser.

[0047] As shown, the operations 300 may include, optionally, at operation 350, pumping the condensed second fluid to the heat exchanger.

[0048] As shown, the operations 300 may include, optionally, at operation 355, using the electrical energy for one or more operations associated with extracting production fluid from the oil well.Example Clauses

[0049] Implementation examples are described in the following numbered aspects:

[0050] Aspect 1 : A method for extracting production fluid from an oil well, wherein the production fluid includes water, wherein the water is at a first input temperature; diverting at least the water of the production fluid to an on-site power generation system; and converting heat energy of the water to electrical energy at the on-site power generation system, wherein after the converting the water is a second output temperature lower than the first input temperature.

[0051] Aspect 2: The method of Aspect 1, wherein converting heat energy of the water to electrical energy at the power generation system comprises: inputting the water to a heat exchanger; heating, with the water, a second fluid at the heat exchanger; using the heated second fluid to turn a turbine, converting heat energy of the heated second fluid to mechanical energy; and converting the mechanical energy to electrical energy at a generator.

[0052] Aspect 3: The method of Aspect 2, further comprising: after using the heated second fluid to turn the turbine, condensing the heated second fluid at a condenser; and pumping thecondensed second fluid to the heat exchanger.

[0053] Aspect 4: The method of any combination of Aspects 1-3, further comprising using the electrical energy for one or more operations associated with extracting production fluid from the oil well.

[0054] Aspect 5: The method of any combination of Aspects 1-4, further comprising, before diverting at least the water of the production fluid to the on-site power generation system, separating the water from the production fluid, wherein the production fluid includes hydrocarbons.

[0055] Aspect 6: A system comprising: a wellbore; an on-site power generation system; and oil and gas equipment configured to: extract production fluid from the wellbore, the production fluid comprising hydrocarbons and water at a first input temperature; and divert at least the water of the production fluid to the on-site power generation system, wherein the on-site power generation system is configured to convert heat energy of the water to electrical energy, and wherein after the converting the water is a second output temperature lower than the first input temperature.

[0056] Aspect 7: The system of Aspect 6, wherein the on-site power generation system comprises a heat exchanger configured to use the water to heat a second fluid.

[0057] Aspect 8: The system of Aspect 7, wherein the on-site power generation system further comprises a turbine configured to turn in response to the heating of the second fluid, converting heat energy of the heated second fluid to mechanical energy.

[0058] Aspect 9: The system of Aspect 8, wherein the on-site power generation system further comprises a generator configured to convert the mechanical energy generated by the turbine to electrical energy.

[0059] Aspect 10: The system of Aspect 9, wherein the on-site power generation system further comprises a condenser configured to condense the heated second fluid after the heated second fluid passes through the turbine.

[0060] Aspect 11: The system of Aspect 10, wherein the on-site power generation systemfurther comprises a pump configured to pump the condensed second fluid to the heat exchanger.

[0061] Aspect 12: The system of any combination of Aspects 9-11, wherein the generator is configured to supply the electrical energy to the one or more equipment.

[0062] Aspect 13: The system of any combination of Aspects 6-12, further comprising a separator configured to separate the water from the production fluid before diverting at least the water of the production fluid to the on-site power generation system.

[0063] Aspect 14: The system of any combination of Aspects 6-13, further comprising one or more photovoltaic solar panels configured to convert radiation energy of sunlight to electrical energy and supply the electrical energy to the one or more equipment.Additional Considerations

[0064] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein are not limiting of the scope, applicability, or aspects set forth in the claims. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For instance, the methods described may be performed in an order different from that described, and various actions may be added, omitted, or combined. Also, features described with respect to some examples may be combined in some other examples. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method that is practiced using other structure, functionality, or structure and functionality in addition to, or other than, the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

[0065] The various illustrative logical blocks, modules and circuits described in connection with the present disclosure may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or otherprogrammable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0066] As used herein, a phrase referring to “at least one of’ a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c).

[0067] As used herein, the term “determining” encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.

[0068] Language of degree used herein, such as the terms “approximately,” “about,” “generally,” and “substantially” as used herein represent a value, amount, or characteristic close to the stated value, amount, or characteristic that still performs a desired function or achieves a desired result. For example, the terms “approximately,” “about,” “generally,” and “substantially” may refer to an amount that is within less than 10% of, within less than 5% of, within less than 1% of, within less than 0.1% of, and / or within less than 0.01% of the stated amount. As another example, in certain embodiments, the terms “generally parallel” and “substantially parallel” or “generally perpendicular” and “substantially perpendicular” refer to a value, amount, or characteristic that departs from exactly parallel or perpendicular, respectively, by less than or equal to 15 degrees, 10 degrees, 5 degrees, 3 degrees, 1 degree, or 0.1 degree.

[0069] The methods disclosed herein comprise one or more actions for achieving the methods.The method actions may be interchanged with one another without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of specific actions may be modified without departing from the scope of the claims. Further, the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions. The means may include various hardware and / or software component(s) and / or module(s), including, but not limited to a circuit, an application specific integrated circuit (ASIC), or processor.

[0070] The following claims are not intended to be limited to the aspects shown herein, but are to be accorded the full scope consistent with the language of the claims. Within a claim, reference to an element in the singular is not intended to mean “one and only one” unless specifically so stated, but rather “one or more.” Unless specifically stated otherwise, the term “some” refers to one or more. No claim element is to be construed under the provisions of 35 U.S.C. § 112(f) unless the element is expressly recited using the phrase “means for”. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims.

Claims

CLAIMSWhat is claimed is:

1. A method comprising: extracting production fluid from an oil well, wherein the production fluid includes water, wherein the water is at a first input temperature; diverting at least the water of the production fluid to an on-site power generation system; and converting heat energy of the water to electrical energy at the on-site power generation system, wherein after the converting the water is a second output temperature lower than the first input temperature.

2. The method of claim 1, wherein converting heat energy of the water to electrical energy at the power generation system comprises: inputting the water to a heat exchanger; heating, with the water, a second fluid at the heat exchanger; using the heated second fluid to turn a turbine, converting heat energy of the heated second fluid to mechanical energy; and converting the mechanical energy to electrical energy at a generator.

3. The method of claim 2, further comprising: after using the heated second fluid to turn the turbine, condensing the heated second fluid at a condenser; and pumping the condensed second fluid to the heat exchanger.

4. The method of claim 1, further comprising using the electrical energy for one or more operations associated with extracting production fluid from the oil well.

5. The method of claim 1, further comprising, before diverting at least the water of the production fluid to the on-site power generation system, separating the water from the production fluid, wherein the production fluid includes hydrocarbons.

6. A system comprising: a wellbore; an on-site power generation system; and oil and gas equipment configured to: extract production fluid from the wellbore, the production fluid comprising hydrocarbons and water at a first input temperature; and divert at least the water of the production fluid to the on-site power generation system, wherein the on-site power generation system is configured to convert heat energy of the water to electrical energy, and wherein after the converting the water is a second output temperature lower than the first input temperature.

7. The system of claim 6, wherein the on-site power generation system comprises a heat exchanger configured to use the water to heat a second fluid.

8. The system of claim 7, wherein the on-site power generation system further comprises a turbine configured to turn in response to the heating of the second fluid, converting heat energy of the heated second fluid to mechanical energy.

9. The system of claim 8, wherein the on-site power generation system further comprises a generator configured to convert the mechanical energy generated by the turbine to electrical energy.

10. The system of claim 9, wherein the on-site power generation system further comprises a condenser configured to condense the heated second fluid after the heated second fluid passes through the turbine.

11. The system of claim 10, wherein the on-site power generation system further comprises a pump configured to pump the condensed second fluid to the heat exchanger.

12. The system of claim 9, wherein the generator is configured to supply the electrical energy to the one or more equipment.

13. The system of claim 6, further comprising a separator configured to separate the water from the production fluid before diverting at least the water of the production fluid to the on-site power generation system.

14. The system of claim 6, further comprising one or more photovoltaic solar panels configured to convert radiation energy of sunlight to electrical energy and supply the electrical energy to the one or more equipment.

15. A sy stem compri si ng : a wellbore; an on-site power generation system; and oil and gas equipment configured to: extract production fluid from the wellbore, the production fluid comprising hydrocarbons and water at a first input temperature; and divert at least the water of the production fluid to the on-site power generation system, wherein the on-site power generation system comprises: a heat exchanger configured to use the water to heat a second fluid, wherein exiting the heat exchanger the water is at a second output temperature lower than the first input temperature; a turbine configured to turn in response to the heating of the second fluid, converting heat energy of the heated second fluid to mechanical energy; a generator configured to: convert the mechanical energy generated by the turbine to electrical energy; and supply the electrical energy to the one or more equipment; a condenser configured to condense the heated second fluid after the heated second fluid passes through the turbine; anda pump configured to pump the condensed second fluid to the heat exchanger.

16. The system of claim 15, further comprising one or more photovoltaic solar panels configured to convert radiation energy of sunlight to electrical energy and supply the electrical energy to the one or more equipment.

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