Drilling system and method based on subsea pump pressure control

Abstract

The invention relates to a drilling system and method based on subsea pump pressure control. The system is characterized by comprising a drilling ship; a drilling liquid supplying device and a control device are arranged on the drilling ship; the drilling liquid supplying device is connected with the liquid feeding end of a water faucet through a liquid manifold; the water faucet is fixedly connected to a derrick arranged in the middle part of the drilling ship; the liquid discharging end of the water faucet is in rotating connection with the top end of a drilling rod; a drill bit is fixedly connected to the bottom end of the drilling rod; an absorbing module sleeves the lower part of the drilling rod; two pipelines are symmetrically arranged on the outer pipe wall of the absorbing module; a throttle valve is arranged on the pipeline at one side; the control device is electrically connected to an electrical device positioned on the drilling ship; the electrical device is electrically connected with a motor through a control and power pipeline; the output end of the motor is connected with a subsea pump; an inlet of the subsea pump is connected with a hose and provided with a pressure flow sensor. According to the system, the opening degree of the throttle valve and the rotating speed of the subsea pump can be adjusted by a control panel device through the control and power pipeline, so that the pressure of a wellhead of a subsea drilling well is stable, and as a result, the well control risk caused by natural gas-water composition can be controlled.

Description

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AI Technical Summary

Benefits of technology

This patented technology solves problems associated with traditional methods used during oil exploration operations like drills or pipelines. It includes several technologies including drill rods, drill bits attached to them, an underground tank filled with water called seawater, a submersonic (submersible) propulsion unit located below ground, a hydrostatic head elevator mechanism, a subsidiary pumping station, a combination of these components, and various sensors placed close enough proximity to each component to detect any harmful gases entering the borehole while also controllably driving downward movement of the tool towards deeper areas without causing damage.

Problems solved by technology

The technical problem addressed by this patented method relating to controlling the flow of gases during oil field development involves finding ways for efficient use of resources while also addressing issues like environmental concerns caused by excessive amounts of methanol (MeOH) released from traditional methods that involve burning off hydrocarbon fuel beforehand.

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