Designing a Versatile Oil Storage Tank
In response to market demands, the expansion of crude oil exploitation has necessitated increased efficiency, leading to the development of multifunctional oil storage tanks. Traditional methods are no longer sufficient for the current requirements of crude oil collection and storage. The multifunctional oil storage tank is designed to perform various tasks related to oil and gas storage, including efficient oil and gas gathering, transportation, heating, and unloading. This versatility helps reduce costs and minimize heat loss, making multifunctional oil storage tanks indispensable for modern applications.

The definition of a multifunctional oil storage tank can be derived from its literal meaning, signifying that the tank possesses multiple capabilities beyond its basic functions of collecting and heating crude oil, and unloading oil. Its fundamental structure includes components like pressure gauges, safety valves, the tank itself, and heating equipment. The widespread adoption of multifunctional oil storage tanks is attributed to their diverse functionalities.

Several reasons drive the design of multifunctional oil storage tanks. Firstly, the conventional elevated tanks with electric heating in oil fields are inadequate for the evolving needs of current oil field production. As oil field production advances, the demand for new, multifunctional oil storage tanks has arisen. These tanks must exhibit higher safety factors than previous elevated tanks while maintaining low energy consumption. Multifunctional oil storage tanks address challenges such as remote oil wells, low liquid content, and low water content, facilitating convenient gathering and transportation, increasing output, and reducing management complexity. Environmental considerations are also essential in the design to align with the growing trend of environmental protection.

The intensification of crude oil exploitation, particularly with heavy oils, which have poor fluidity and require additional processes for transportation, is another factor influencing the need for multifunctional oil storage tanks. These tanks streamline processes, enhance efficiency, and address the challenges associated with heavy oils.

Moreover, in many oil fields, one well often utilizes numerous oil storage tanks during gathering and transportation. This leads to an increase in processes and significant crude oil loss through traditional methods. The design of multifunctional oil storage tanks aims to minimize processes and improve efficiency, making them crucial for addressing contemporary requirements in oil exploitation and transportation.
 
Design Principles of Multifunctional Oil Storage Tanks

Functional Diversity:

A key design principle for multifunctional oil storage tanks is functional diversity. In the contemporary design landscape, products are increasingly geared towards multifunctionality and diversification. The aim is to create versatile items that serve multiple purposes. In the case of multifunctional oil storage tanks, the design should strive for the goal of "multi-well in one tank," enhancing its practicality. Considerations during design should encompass the top of the oil tank, including features like oil holes, manholes or light holes, and oil measuring holes. Practical design should align with actual needs, ensuring that the multifunctional oil storage tank meets specific requirements.

Cost Control:

The second design principle is cost control. Regardless of the product being designed, the initial consideration should be the design cost. If a design is overly functional but too expensive, it may lack practicality. Designing multifunctional oil storage tanks with practicality in mind necessitates careful attention to cost control. The selection of cost parameters should be based on real-world considerations. Ignoring material costs, processing costs, or other expenses during the design phase may lead to excessive costs compared to traditional oil tanks, undermining the design's value. Therefore, it is crucial to consider and control costs, ensuring that the multifunctional oil storage tank is both functional and cost-effective.

Double-layer Design of Multifunctional Oil Storage Tanks

The incorporation of a double-layer design enhances the diversity of oil storage tanks, ensuring a comprehensive range of functionalities. The double-layer design has found applications in oil fields, with various types and characteristics. Two notable examples are the SS double-layer oil tank and the steel-reinforced glass fiber double-layer oil tank (SF).

SS Double-layer Oil Tank:

SS double-layer oil tanks feature inner and outer tanks made of steel. The interlayer includes a leakage detector, significantly improving safety. The key functional aspect of SS tanks is safety, effectively preventing accidents and minimizing environmental pollution. The characteristics of SS tanks include high strength, a dry side leakage system, challenges in repair and high-voltage pinhole detection, but with the advantage of lower costs.

SF Double-layer Oil Tank (Steel-reinforced Glass Fiber):

Also known as SF, this type includes both inner and outer tanks with a gap in between. Equipped with a leakage detection device, SF tanks enhance safety by providing warnings if safety issues arise. SF tanks are characterized by easy installation, reduced investment, straightforward operation, economic and environmental benefits, and the prevention of energy leakage, contributing to overall safety.
 
Specific Design Scheme

In developing a design for a multifunctional oil storage tank dedicated to petroleum crude oil storage, several crucial modifications are necessary. The conventional heating rod needs transformation, and the incorporation of a metering tank device is essential. The design should be tailored to the specific requirements of the site. Given that the oil storage tank employs a skid-mounted structure, attention to its integrity is paramount. Some integral components, such as the production tank and metering tank, must remain inseparable. As previously outlined, the design includes features such as light transmission holes for production oil tanks and oil metering holes for metering oil tanks. The oil outlet pipe design should consider a suitable direction, preferably vertical. Additionally, the inclusion of a temperature control device and heating rod is indispensable to manifest its multifunctionality. Complementing these features, pipeline equipment is necessary for the oil transportation process. Suitable pipelines can be connected, facilitating effective crude oil output while mitigating environmental pollution.

Application Benefits of Multifunctional Oil Storage Tanks

The application benefits of multifunctional oil storage tanks can be categorized into direct and indirect advantages. Direct benefits primarily focus on cost savings. In contrast, indirect benefits center around environmental conservation.

Direct Benefits:
Traditional elevated tanks, specifically the electric heating type, consume substantial electricity. Calculations demonstrate that a traditional elevated tank, running for ten hours daily, incurs a significant monthly electricity cost. In comparison, multifunctional oil storage tanks optimize energy use. The discharged hot water from these tanks can be repurposed for well washing, resulting in substantial savings. The application of multifunctional oil tanks can lead to notable reductions in electricity bills, offering a tangible and direct economic benefit.

Indirect Benefits:
The indirect benefits stem from the combined advantages of cost savings and environmental protection. Multifunctional oil tanks can collect and utilize wasted natural gas, exemplifying their commitment to environmental preservation. This dual functionality not only enhances environmental protection but also contributes to reducing environmental pollution, showcasing the indirect benefits of their application.

 
Conclusion
 
In summary, this article elucidates the definition of a multifunctional oil storage tank and delineates the rationale behind its design. Building upon this foundation, the design principles of a multifunctional oil storage tank are expounded, emphasizing functional diversity and cost control. The concept of double-layer design is introduced, outlining its characteristics and types. A specific design scheme is proposed, and the application benefits of a multifunctional oil storage tank are discussed, encompassing both direct and indirect advantages. In conclusion, the multifunctional storage tank not only boasts a high safety factor but also achieves energy and electricity savings while promoting environmental friendliness. With numerous advantages, the design and utilization of multifunctional storage tanks are imperative.
 
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