China
Africa
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Hybrid Energy Systems for O&G Industries
Published in Yatish T. Shah, Hybrid Energy Systems, 2021
A notable example of where renewable technologies can be integrated into upstream operations is to power artificial lift pumps. When there is not enough well pressure for oil to flow to the surface, a rod beam artificial lift pump—often referred to as a “sucker rod pump” or a “Jack pump”—is used to assist extraction. In many areas, rod beam pumps are used extensively. For example, more than 80% of oil production wells operating in the western United States are installed with a rod beam pump [28]. Solar power, combined with a capacitor to store regenerative power during the rod down-stroke, can be used to power a rod beam pump. Test cases have shown significant potential energy savings [28], and solar powered oil pumps are now beginning to see commercial operation [29]. Combined with battery storage, solar power pumps could be applicable to off-grid locations with sufficient sunlight.
Experimental and numerical investigation of fiberglass rod joint on mechanical characteristic and failure mode in high water-content wells
Published in The Journal of Adhesion, 2022
Yanwen Zhang, Jiaqi Che, Changlu Yu, Hanxiang Wang, Yanxin Liu, Zhifei Liu, Mingchao Du
Globally, the number of mechanical automated wells occupy about 90% of the total production wells.[1] Among them, nearly 80% of the mechanical automated wells adopt the sucker-rod pumping mode.[2] As the core component, the sucker rod directly determines the performance of sucker-rod pumping system. With the development of China’s oil and gas exploration and development in the field of low permeability, deep sea, and unconventionality, the limitations of steel sucker rod are becoming more and more serious,[3–5] such as big density, serious corrosion, and high wear rate. The fiberglass composite sucker rod has the characteristics of high tensile strength, light weight, and strong corrosion resistance, which is of great significance for improving oil recovery, extending service life, improving the down-hole operation efficiency, and solving the production problems in deep wells.[6–9] Therefore, it has been gradually applied in oil and gas fields. The rod1 pumping system with fiberglass sucker rod is shown in Figure 1. The pumping unit drives the reciprocating motion of the pump through the fiberglass rod to complete oil exploitation.[10] Because threads cannot be machined on the fiberglass rod surface, adhesive joints through epoxy resin can be used to connect the fiberglass sucker rod shown in Figure 2.[11] However, due to the strong sensitivity of epoxy resin to water, it is easy for the fiberglass sucker rod working in high water-content well to bring water molecules in the epoxy resin greatly affecting the bonding strength and leading to joint breakage, which exerts seriously negative impacts on service life and construction safety of fiberglass sucker rod.[12,13] Therefore, it is particularly important to study the performance and failure mechanism of fiberglass sucker rod joint in high water-content wells.