Simulation experiment well
A simulation experiment and wellbore technology, applied in the field of simulation experiment wells, can solve the problems of large investment, inconvenient maintenance, and long construction period of test wells, and achieve the effects of low operating cost, reduced construction cost, and shortened well construction period.
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Embodiment 1
[0044] In this embodiment, the simulated test well may be a vertical normal temperature test well, and the suitable operating temperature range is 25°C to 120°C. The test outer wellbore contains a support 14 connected up and down and an outer casing 13. The outer diameter of the outer casing 13 matches the diameter of the wellbore. The outer diameter of the outer casing 13 is 660mm, and the depth of the outer casing 13 is 20m. The upper end of 13 is provided with a wellhead embedded part 26, the outer casing 13 is a pipe string structure with an open upper end and a closed lower end, and the support 14 is a cylindrical structure with open upper and lower ends. In step 3, the test inner wellbore The upper end is suspended on the upper end of the support 14, such as Figure 3 to Figure 6 shown.
[0045] In this embodiment, the support 14 is located above the ground 104, and the support 14 is a cylindrical structure. The support 14 includes a top ring 141, a vertical tube 142 an...
Embodiment 2
[0054] In this embodiment, the simulation test well may be a vertical high-temperature test well, and the suitable operating temperature range is 25°C to 350°C. The wellhead device includes a hollow tube 5 and a wellhead tee 6 which are sequentially sleeved from the inside to the outside. The hollow tube 5 and the wellhead tee 6 are in an upright state, and the hollow tube 5 is sequentially sleeved with a preload disc 19, Compression cover 20 and sealing ring, compression cover 20 and described sealing ring are all positioned between hollow cylinder 5 and wellhead tee 6, and compression cover 20 can compress described sealing ring to make hollow cylinder 5 and wellhead tee 6 seal between them.
[0055] In this embodiment, the upper end of the compression cover 20 and the pre-tightening disc 19 are located above the wellhead tee 6, the compression cover 20 can move up and down relative to the hollow tube 5, and the pre-tightening disc 19 is screwed to the hollow tube 5 , along...
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