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A Control Method for Steady Steering Mode in Rotary Steering Drilling

A technology of rotary steerable drilling and control methods, which is applied in the fields of automatic control system of drilling, directional drilling, drilling equipment, etc.

Active Publication Date: 2021-06-22
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a solution to the deficiencies of the existing technology, which may cause problems in the measurement of the azimuth of the downhole fluxgate under strong geomagnetic interference, which may cause the drilling direction to remain stable and forward when the steady-deviation drilling turns. A Steady Mode Control Method for Rotary Steerable Drilling with Major Deviation

Method used

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  • A Control Method for Steady Steering Mode in Rotary Steering Drilling
  • A Control Method for Steady Steering Mode in Rotary Steering Drilling

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Embodiment Construction

[0024] A kind of rotary steerable drilling stabilization mode control method proposed by the present invention will be further introduced below in combination with the accompanying drawings and embodiments:

[0025] The invention discloses a control method of a rotary steerable drilling mode for stabilizing the deviation. The control method includes a downhole control method for stabilizing the deviation and an operation method for disturbed formations.

[0026] The downhole control method for stabilizing the deviation comprises the following steps:

[0027] Step 1: The downhole control equipment measures the current well inclination angle and the high side tool face angle in real time;

[0028] Step 2, the downhole control equipment is pre-booked with the target well inclination angle, translation force strength, and deflection force strength; the left and right sides of the translation force strength are divided into 5 levels and 0, and the level 5 to the left is 100% of the...

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Abstract

The invention belongs to the technical field of petroleum exploitation, and in particular relates to a control method of a rotary steerable drilling mode for stabilizing the inclination; it includes an downhole control method for stabilizing the inclination and an operation method for disturbed formations; the downhole control method for stabilizing the inclination includes the following steps: Step 1, downhole The control equipment measures the current well inclination angle and the high side tool face angle in real time; step 2, the downhole control equipment is pre-booked with the target well inclination angle, translational force, and building force; the left and right sides of the translational force are divided into 5 levels and 0 ; Step 3: The downhole control equipment compares the current downhole angle with the target inclination angle in real time. When the current inclination angle > the target inclination angle, the combination of the required deflection force and the binding translational force vector is the required output force of the downhole hydraulic equipment ;Current well inclination

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a control method for a rotary steerable drilling stabilization mode. Background technique [0002] With the improvement of oilfield development and production needs, directional drilling technology is more and more widely used. The existing commercial application of rotary steerable drilling generally adopts the downhole closed-loop method during the drilling process of the stabilizing section, that is, the control module of the steering equipment controls the stabilizing section according to the well inclination and azimuth information measured near the bit. It is necessary to drill straight without changing the azimuth and well deviation; or due to technical limitations, the large closed-loop control method on the well is adopted, that is, the well deviation and azimuth information measured by MWD is analyzed by the computer on the well, and then the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B44/00E21B7/04
CPCE21B7/04E21B44/00
Inventor 吴文晋白玉新解庆
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS