Continuous drilling joint device

Abstract

The invention discloses a continuous drilling connector device, which relates to the technical field of drilling equipment and comprises a connector body, a through pipeline is arranged in the connector body, one end of the connector body is provided with internal threads, and the other end of the connector body is provided with external threads; and a valve and a bypass valve are arranged on the joint body. The continuous well drilling connector device is good in sealing performance, stable pressure needed by a well hole can be effectively guaranteed, and the problem of pressure relief of a sealing valve path does not need to be worried about; the used sealing valve path does not need to be sealed by a sealing ring, so that the service life is longer, and the problem of frequent replacement of the sealing valve does not need to be worried; the bypass valve is provided with a locking device, so that the stability of the connector and the safety of the bypass valve can be effectively guaranteed, and the service life of the bypass valve is prolonged; the locking device and the bypass slurry pipe adopt latch structures, so that the locking device and the bypass slurry pipe can be quickly locked and disassembled with the bypass valve, and the operation time is saved; the pressure indicating assembly is arranged on the bypass pipe, the working state of the bypass valve path can be displayed in real time, and the safety of drilling operation is guaranteed.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a continuous drilling joint device. Background technique [0002] In drilling operations, in order to drill to the target position, it is necessary to add and unload the drill pipe or drill string. The traditional operation method needs to shut down the mud pump and stop the mud circulation in the hole. When drilling into a narrow density window formation, the drilling fluid safe density window The narrowness causes complex situations such as well kick and leakage, making smooth drilling under a narrow safe density window a major technical problem, which seriously restricts the development speed and economic benefits of oil and gas resources. Therefore, a new drilling technology has been produced, that is, continuous circulation drilling. The continuous circulation joint tool is used to ensure that the mud pump does not need to be shut down when loading and unloading d...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a continuous drilling joint device to solve the technical problems of drilling in narrow density window formations and the need to continuously ensure the circulation of drilling fluid in the borehole

Images