Method and device for controlling drilling parameters

Abstract

The invention discloses a control method and device of drilling parameters and relates to the field of rock-soil or petroleum geology drilling. The control method of the drilling parameters comprises the following steps that the real-time drilling parameters are obtained; according to the drilling parameters in the drilling operation, a plurality of sets of data samples are obtained through selection; the state of drill column operation corresponding to the data samples is recognized, and the state type of a drill column corresponding to the data samples is obtained; based on the drilling parameters, the data samples and the state type of the drill column corresponding to the data samples, the drilling tool energy transfer index of the data samples is obtained; correlation analysis is conducted on the data samples and the drilling tool energy transfer index of the data samples, and parameters, meeting preset requirements, in the drilling parameters are obtained; and the parameters, meeting the preset requirements, in the drilling parameters are adjusted and controlled according to preset rules. By the adoption of the control method and device of the drilling parameters, the drilling tool energy transfer index can be optimized, and accordingly the real-time drilling efficiency is improved.

Description

technical field [0001] The invention relates to the field of geotechnical or petroleum geological drilling, in particular to a method and device for controlling drilling parameters. Background technique [0002] Long-reach horizontal well technology has become one of the main technologies for developing unconventional oil and gas resources. China has successfully drilled a number of long-reach horizontal wells in shale gas and tight oil and gas, and the average horizontal well section length has gradually increased from 500m to more than 1500m. However, there is still a big gap in long-reach horizontal well technology compared with foreign countries, which is mainly reflected in the long drilling cycle of horizontal wells with long horizontal well sections, high operating costs and limited extension length of horizontal sections. [0003] Judging from the drilling cycle and drilling footage data, a large amount of drilling time is spent in the drilling operation of the defl...

AI Technical Summary

Problems solved by technology

However, there is still a big gap in long-reach horizontal well technology compared with foreign countries, mainly reflected in the longer drilling cycle of horizontal wells with long horizontal well sections, higher operating costs, and limited extension length of horizontal sections

[0003] Judging from the drilling cycle and drilling footage data, a large amount of drilling time is spent in the drilling operation of the deflection well section and the horizontal well section. high drilling efficiency, long drilling cycle and high cost, which will seriously affect the profitable development of unconventional oil and gas resources (ie shale gas, tight oil and gas, etc.) in the future

[0004] In the drilling process, real-time optimization and control of drilling friction is very important. In the existing technology, passive optimization is mostly used, that is, when the friction torque is high, the drilling efficiency is obviously affected, and the drilling parameters are optimized. There is no real-time optimization. The method of controlling the drilling friction torque is to intervene in time when the drilling friction torque tends to increase, optimize the drilling parameters, ensure that the drilling friction is within a small reasonable range, and maintain high drilling efficiency

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