Fig 1.
The diagram of oil and gas well.
Fig 2.
The schematic diagram of testing on the relationship between adhesive curing time and bond strength.
(a) schematic diagram. (b) materials.
Fig 3.
The relationship between adhesive curing time and bonding strength.
Table 1.
Levels for orthogonal experiment.
Fig 4.
The principle and materials of interfacial shear strength measurement.
(a) schematic diagram of experiment. (b) the inner tube, the outer tube and the annular base. (c) the cemented tubes.
Fig 5.
The filtered sand and inner tubes adhered with sand.
(a) Filtered building sand. (b) inner tubes adhered with sand of different size.
Fig 6.
(a) NYL-300 press machine. (b). model put on the press machine.
Fig 7.
The interfacial shear strength under various conditions of casing surface.
The results of casing without sand (blue) and casing adhered sand (red).
Table 2.
The orthogonal table from the result of the orthogonal experiment and analysis of range.
Fig 8.
The effect curve of each factor based on the orthogonal experiment result.
Fig 9.
The relationship between sand grain size and interfacial shear strength.
Fig 10.
The relationship between sand coverage and interfacial shear strength.
Fig 11.
The relationship between adhesive curing temperature and interfacial shear strength.
Fig 12.
The relationship between adhesive curing time and interfacial shear strength.