Drilling tool flow device for deep water downhole

Abstract

The invention relates to a downhole drilling tool drift diameter device for a deep well. The downhole drilling tool drift diameter device for the deep well is characterized by comprising a fixed pup joint, a recovery base and a drift diameter gauge, wherein the fixed pup joint and the recovery base are sealed through a sealing ring, a penetrating circulating hole is formed in the drift diameter gauge in the axial direction, a side wall circulating through hole is formed in the side wall of the drift diameter gauge, a boss type fishing head is arranged at one end of the drift diameter gauge, an outer chamfer which facilitates recovery is manufactured at the other end of the drift diameter gauge, and an inner chamfer matched with the outer chamfer of the drift diameter gauge is manufactured at the upper end of the recovery base. The downhole drilling tool drift diameter device for the deep well has the advantages that the downhole drilling tool drift diameter device can be put into a drilling tool from a wellhead before the last time of pigging and pulling is carried out in the process of construction operation, needing the drift diameter of the drilling tool, of deep well drilling operation, drift diameter operation of the whole drilling tool is accomplished at one time, and normal drilling tool pulling operation cannot be influenced; the operation procedure of the drift diameter can be simple and convenient, the normal requirement for drilling tool pulling can be met, and production efficiency can be improved; the risk of construction operation can be reduced.

Description

technical field [0001] The invention belongs to the technical field of deep-water oil and gas drilling, and in particular relates to a drilling tool passage device for deep-water downhole. Background technique [0002] In the known field of oil and gas drilling technology at present, the method generally adopted for conventional drilling tool diameter is as follows: the operator puts the drift gauge on the second floor platform one by one to pass through the drilling tool water hole. The disadvantages of the above method are: (1) the safety risk is relatively large, and it is very easy to cause the drift gauge to fall from a high place, resulting in a safety accident. (2) The production efficiency is low, which is not conducive to the work of speed-up and efficiency-enhancement. At the same time, since the second-story platform has not been set up on the deep-water drilling platform, it is impossible to manually put the drift gauges on the second-story platform, and the pro...

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are: (1) The safety risk is relatively large, which can easily cause the drift gauge to fall from a high place and cause a safety accident

(2) The production efficiency is low, which is not conducive to speed-up and efficiency-enhancing work

At the same time, since the second-story platform has not been set up on the deep-water drilling platform, it is impossible to manually place the drift gauges on the second-story platform, and the issue of drift gauge recovery also needs to be considered

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