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Control optimizing method and device of horizontal well drilling friction

An optimization method and technology for horizontal wells, which are applied in the automatic control system of drilling, drilling equipment and methods, drilling equipment, etc., can solve the problems affecting the beneficial development of unconventional oil and gas resources, long cycle and high operating cost, and achieve real-time improvement. The effect of drilling efficiency

Active Publication Date: 2017-01-04
PETROCHINA CO LTD
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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

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  • Control optimizing method and device of horizontal well drilling friction
  • Control optimizing method and device of horizontal well drilling friction
  • Control optimizing method and device of horizontal well drilling friction

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Embodiment Construction

[0040] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.

[0041]At present, in the domestic horizontal well drilling process, the friction management optimization mostly adopts the passive optimization method, that is, in the design stage, through the friction analysis of the drilled wells, relatively reasonable drilling process parameters are optimized and written into the drilling engineering design; During the drilling proces...

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Abstract

The invention discloses a control optimizing method and device of horizontal well drilling friction and relates to the field of rock-soil or petroleum geology drilling. The control optimizing method of horizontal well drilling friction comprises the following steps that drilling parameters are obtained; according to the drilling parameters of drilling work, a plurality of sets of data samples are obtained through selection; drill column working states corresponding to the data samples are recognized; based on the drilling parameters, the data samples and the drill column working states corresponding to the data samples, the practical friction coefficient of the data samples is obtained; correlation analysis is conducted on the data samples and the practical friction coefficient 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 according to preset rules. By the adoption of the control optimizing method and device, the practical friction coefficient 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 and optimizing the drilling friction of a horizontal well. 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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B44/00
CPCE21B7/046E21B44/00
Inventor 胡贵黄雪琴张国辉石李保刘新云于文华徐鹏
Owner PETROCHINA CO LTD
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