Application Characteristics of Zeolite-Based Stuffing for Nanofluidic Packer Rubber

Zhang, Yafei; Liang, Jingwei; Luo, Rui; Min, Shiwei; Dou, Yihua

doi:10.3390/en15217962

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…The material of the casing, center tube, and upper and lower compression rings are defined as structural steel, with elastic modulus E = 2.06 × 10 5 MPa and the Poisson's ratio µ = 0.25 [28]. The mechanical characteristics of the nanofluidic system in the sandwich are described by the model of elastic deformation, plastic crushing, and densification [29]. The material of the rubber cylinder was selected as hydrogenated nitrile rubber except for the sandwich.…”

Section: Finite Element Modelingmentioning

confidence: 99%

Structural Design and Sealing Performance Analysis of a Nanofluidic Self-Heating Unsealing Rubber Cylinder

2023

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As a crucial component for temporary blocking of layer segments in the segmental fracturing process, bridge plugs are difficult to unseal by conventional methods and may cause major downhole accidents if not handled properly. In this paper, a nanofluidic self-heating unsealing rubber cylinder is designed, which is equipped with a nanofluidic self-heating unsealing sandwich inside the conventional rubber cylinder, consisting of a nanofluidic system and an annular flexible heater. When unsealing, the nanofluidic self-heating unsealing sandwich is heated by the annular flexible heater, and the nanofluidic system can help the bridge plug rubber cylinder shrink in volume and unseal smoothly by the characteristics of heat shrinkage and cold expansion. The nanofluidic system, consisting of porous carbon with an exceptionally large specific surface area and glycerol, serves as a prime example for filling the sandwich layer, and the design parameters calculation was carried out. The sealing performance of the designed nanofluidic self-heating unsealing rubber cylinder was analyzed based on the Mooney–Rivlin principal structure by finite element modeling. The results show that the maximum contact stress between the nanofluidic self-heating unsealing rubber cylinder and the casing wall increases by 9.73%, the compression distance reduces by 24.47%, and the maximum equivalent force decreases by 12.17% on average compared with a conventional rubber cylinder under the same seating load. The designed nanofluidic self-heating unsealing rubber cylinder can satisfy the requirements of pressure-bearing capacity and sealing performance and performs better than a conventional rubber cylinder.

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Section: Finite Element Modelingmentioning

confidence: 99%

Structural Design and Sealing Performance Analysis of a Nanofluidic Self-Heating Unsealing Rubber Cylinder

2023

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“…In the last ten years, scholars at home and abroad have conducted in-depth research on the coplanar and out-of-plane performances of honeycomb compression. According to our previous research, the bearing capacity of a single-layer honeycomb skeleton decreases exponentially with an increase of the height of the cell [7,8], so in practical applications, honeycomb skeleton structures are often used with a tandem of multiple layers. In addition, with an improvement in the compression stroke of its cushioning energy-absorbing structures and the demand for the functional designability of sandwich structures, tandem honeycombs of a multi-layer cellular combination have attracted extensive attention from researchers [9].…”

Section: Introductionmentioning

confidence: 99%

“…Because of its high porosity, low mass density, and promising energy absorption characteristics, it has been widely used in aerospace [1], mechanical engineering [2], transportation [3], and other fields. Some examples of this include cushioning and crashworthiness structures in lunar lander systems [4], impact attenuators for cars [5], and packer rubber cylinders in petroleum machinery [6], etc. In the last ten years, scholars at home and abroad have conducted in-depth research on the coplanar and out-of-plane performances of honeycomb compression.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Layer Stacking Method on the Mechanical Properties of Honeycomb Skeleton

Zhang

Zhai

Min³

et al. 2023

Materials

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The performance of a multi-layer honeycomb skeleton can be significantly enhanced through tandem connection, while the structure’s properties can be tailored by altering the layer stacking method of the honeycomb skeleton. To investigate the impact of layer stacking methods on the mechanical properties of multilayer honeycomb skeletons, 3D printing technology was used to prepare double-layer honeycomb skeleton tandem structures with different dislocation modes in compression testing. A finite element simulation model was established to conduct quasi-static simulation research. Compared to that of a single-layer honeycomb skeleton, the energy absorption of the honeycomb skeleton tandem structure increased. The optimal bearing capacity of the honeycomb skeleton was achieved when the upper and lower layers were precisely aligned. Once dislocation occurred, both the value of average platform stress and energy absorption decreased. Then, the bearing capacity of the honeycomb skeleton tandem structures increased with an enlargement of the dislocation, reaching its maximum at the half-dislocation period. An increase in the partition thickness and stiffness led to a reduction in the dislocation-induced effects on the mechanical properties. The research results can provide theoretical and data support for the engineering application of honeycomb skeleton tandem structures.

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“…Since the mid-1990s, certain researchers have experimentally explored the thermodynamic system composed of hydrophobic porous materials and water [6,7]. In the subsequent work, scholars have studied the pressure and volume change of NEAS composed of different hydrophobic nanoporous solids, including silica gel [8][9][10], zeolite [11][12][13][14], MCM-41 [15,16], etc., and revealed the relationship between the infiltration volume and pressure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effects of Applied Electric Field on Liquid Infiltration into Hydrophobic Zeolite

Zhang

Luo

et al. 2023

Energies

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A nanofluidic energy absorption system (NEAS) is composed of nanoporous material and functional liquid with high energy absorption density. Applying an electric field to adjust the energy absorption characteristics of a nanofluidic system will open broader prospects for its application. In the current work, ZSM-5 zeolite was adopted as the nanoporous material and water, a 25% KCl solution, and a saturated KCl solution were adopted as functional liquids to configure NEASs. Pressure-induced infiltration experiments were carried out to study the infiltration and defiltration characteristics of the NEASs under the action of an applied electric field. The results show that the introduction of an applied electric field can weaken the hydrogen bonds between molecules, thus reducing the equivalent surface tension and contact angle, changing the infiltrability of liquid molecules into the nanopores, and reducing the infiltration pressure of the system. In an electrolyte solution/zeolite system, the anions and cations move close to the two plate electrodes under the action of an external electric field, and the fluid properties in the central zone of the pressure chamber are close to the water/zeolite system. For both an ultra-low conductivity liquid and an electrolyte solution/zeolite system, applying an electric field can effectively improve the relative outflow rate of liquid, thus improving the reusability of the system.

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Application Characteristics of Zeolite-Based Stuffing for Nanofluidic Packer Rubber

Cited by 3 publications

References 24 publications

Structural Design and Sealing Performance Analysis of a Nanofluidic Self-Heating Unsealing Rubber Cylinder

Structural Design and Sealing Performance Analysis of a Nanofluidic Self-Heating Unsealing Rubber Cylinder

The Influence of Layer Stacking Method on the Mechanical Properties of Honeycomb Skeleton

Experimental Study on the Effects of Applied Electric Field on Liquid Infiltration into Hydrophobic Zeolite

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