Method and system for optimizing drilling parameters

A technique of drilling parameters and indexes, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc. It can solve the problems of not being able to maintain high efficiency and provide drilling optimization strategies, and achieve the effect of improving drilling efficiency
CN103046918AActive Publication Date: 2013-04-17BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2013-04-17

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Abstract

The invention discloses a method and a device for optimizing drilling parameters, and belongs to the oil drilling field. The method comprises obtaining drilling parameters obtained in real time; calculating a virtual strength index (VSI) in real time according to the obtained drilling parameters which comprise rotary disc rotation speed, torque, drilling pressure, mechanical drilling speed, slush pump displacement, bit pressure drops and the like; and adjusting the drilling parameters to reduce the VSI according to the virtual strength index. According to the method and the device for optimizing drilling parameters, the VSI is calculated in real time through the drilling parameters fed back through real-time geological environment changes, and the drilling parameters are adjusted in real time according to the VSI relevant to an actual strength index, so that the bit cutting efficiency is in a possible optimal state, and the drilling efficiency is improved.
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Description

technical field

[0001] The invention relates to the field of oil drilling, in particular to a method and device for optimizing drilling parameters. Background technique

[0002] The rapid development of oil and gas field exploration and development has brought many challenges to the development of drilling technology. In recent years, with the continuous application of various drill bits in steerable and rotary steerable systems and the increasing drilling depth, how to effectively use the limited energy on the ground to optimize the performance of drill bits has become increasingly important, especially for horizontal wells, directional wells and large wells. For wells with complex structures such as displacement wells, comprehensive analysis and clarification of the energy utilization rate at the interface between the rock and the drill bit are the key factors for optimizing the ROP and successfully drilling the target.

[0003] In the process of existing oil and gas expl...

Claims

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