Well track parameter calculation method and device for radial horizontal well

Abstract

The invention provides a well track parameter calculation method and device for a radial horizontal well. The method comprises the steps that first posture data of drilling tools at all measuring points is obtained through an inertia calculation method; second posture data of the drilling tools at all the measuring points is obtained through a geomagnetism calculation method; the first posture data is corrected according to the second posture data, and corrected first posture data is obtained; data fusion processing is conducted on the corrected first posture data and the second posture data, and fused posture data is obtained; according to the fused posture data, track position parameter data of all the measuring points is obtained through calculation; accordingly, more accurate track position parameter data can be obtained, and a more accurate well track is drawn out finally.

Description

technical field [0001] The present application relates to the technical field of oil and gas development, in particular to a method and device for calculating wellbore trajectory parameters of radial and horizontal wells. Background technique [0002] In the process of oil and gas development, the drilled oil and gas well trajectory is an important basis for the final completion of oil and gas wells and the design of oil and gas production methods. Therefore, calculating reliable wellbore trajectory parameters and accurately mapping the trajectory of oil and gas wells are very important for oil and gas production. [0003] In the prior art, when the borehole trajectory surveying and mapping is carried out for radial horizontal wells, since the borehole radius and curvature radius of the radial horizontal wells are small, the measuring device with a large size cannot work normally in the radial horizontal wells, so usually Smaller measuring devices consisting of micro-electr...

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Problems solved by technology

[0003] In the prior art, when the borehole trajectory surveying and mapping is carried out for radial horizontal wells, since the borehole radius and curvature radius of the radial horizontal wells are small, the measuring device with a large size cannot work normally in the radial horizontal wells, so usually Requires a smaller measuring device consisting of MEMS components

However, during the process of surveying and mapping, the vibration of the measuring device and changes in the external environment will have a great impact on the micro-electromechanical components, resulting in measurement errors

In the process of calculating the wellbore trajectory parameter data, the measurement errors caused by the above-mentioned effects will continue to accumulate, resulting in large errors in the calculated wellbore trajectory parameters, and ultimately lead to a large deviation between the measured and mapped wellbore trajectory and the actual situation

[0004] There are at least the following problems in the prior art: in the prior art, due to the continuous accumulation of measurement errors in the process of calculating the wellbore trajectory parameter data, the accuracy of the finally calculated wellbore trajectory parameter data is low, and the drawn Well trajectory reliability is low

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