Intelligent well drilling system and method

Abstract

The invention provides an intelligent well drilling system and method and belongs to the field of petroleum and natural gas well-drilling. The intelligent well drilling system comprises a ground system, a downhole system and an intelligent well drilling control platform. The ground system comprises a coiled tubing vehicle set, a coiled tubing control platform, a coiled tubing roller, a lower sleeve derrick, an injection head, a rotating control head and matching blowout-prevention equipment. The coiled tubing control platform and the coiled tubing roller are arranged on the coiled tubing vehicle set, and the lower sleeve derrick is arranged on the upper portion of a wellhead. The injection head, the rotating control head and the matching blowout-prevention equipment are sequentially connected from top to bottom and then arranged at the wellhead. The downhole system comprises coiled tubing with a cable, a wet joint and a downhole intelligent pipe string. One end of the coiled tubing with the cable is wound around the coiled tubing roller, and the other end of the coiled tubing with the cable sequentially penetrates through the injection head, the rotating control head and the matching blowout-prevention equipment and then enters the wellhead to be connected with the downhole intelligent pipe string through the wet joint.

Description

technical field [0001] The invention belongs to the field of oil and natural gas drilling, and in particular relates to an intelligent drilling system and method. Background technique [0002] The development of automated drilling is divided into four stages. In the first stage, directional well engineers make decisions based on the data uploaded by motors and mud pulses, which has a lag. The second stage is to use intelligent drill pipe or electromagnetic waves, continuous waves, etc. to transmit high-speed LWD / MWD data, enabling directional well engineers to make decisions quickly. The third stage is the automatic steering capability. The program is embedded in the drilling rig control system, and the uploaded data does not need to be decided by the directional well engineer, so that the drilling rig can achieve faster and more accurate steering. In the not-too-distant future, a fourth stage will be reached, where directional and geological engineers can control and manag...

AI Technical Summary

Problems solved by technology

The third is to use the rotary steerable tool, which is selected by the downhole motor to drive the rotary steerable tool. When it is necessary to orientate or adjust the wellbore trajectory, it can be realized by sending commands from the ground. This method is more advanced, but the cost is relatively high

After the orientation is completed, when the rotary steerable tool needs to be taken out, a tripping operation is required, which increases the drilling cycle

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