Multifunctional inclinometer and method for judging relative positions of adjacent well sleeves based on inclinometer

Abstract

The invention discloses a multifunctional inclinometer and a method for judging the relative positions of adjacent well sleeves based on the inclinometer, and belongs to the technical field of designof the special inclinometer for oil drilling and borehole collision prevention. The multifunctional inclinometer integrates a fluxgate sensor into an existing gyro inclinometer for the first time; andthe method for judging the relative positions of the adjacent well sleeves based on the inclinometer mainly comprises the steps that magnetic disturbance of the adjacent well sleeves and the boreholecollision risk are identified quickly, and the relative positions of the adjacent well sleeves are inverted. According to the multifunctional inclinometer and the method for judging the relative positions of the adjacent well sleeves based on the inclinometer, a practical method of inverting the relative distance and the orientations of the adjacent well sleeves by utilizing the magnetic tool face angle provided by a gyro sensor and the magnetic field intensity and the magnetic field inclination angle measured by the fluxgate sensor in real time is provided for the first time, the difficult problems such as accurate measuring of a borehole trajectory, identification of wellbore collision risk and inverting of the relative positions of the adjacent well sleeves can be solved simultaneouslyat a magnetic disturbance well section of the adjacent well sleeves, detection equipment is not needed to be arranged additionally, and the multifunctional inclinometer is not limited by whether production or halt production of adjacent wells occurs or not, and the wellbore collision risk can be detected early and advantageously.

Description

technical field [0001] The invention relates to the field of petroleum drilling engineering, in particular to the design of a special inclinometer for petroleum drilling and the anti-collision technology for boreholes, in particular to a multifunctional inclinometer with magnetic and inertial measurement elements, and based on the multifunctional The method of judging the relative position of the casing in the adjacent well by the inclinometer. Background technique [0002] In the field of oil drilling, magnetic inclinometers are usually used to measure wellbore trajectory parameters (inclination azimuth angle AZI) and attitude parameters of deflection tools (magnetic tool face angle MTF); For the measurement medium, the magnetic north line is used as the reference, and it can only work normally in the normal geomagnetic field environment. At present, more and more infill wells and adjustment wells are newly drilled, the scale of new cluster well groups is getting larger an...

AI Technical Summary

Problems solved by technology

[0004] In view of the above technical problems, the present invention provides a multi-functional inclinometer with both magnetic and inertial measurement elements, and a method for judging the relative position of casings in adjacent wells based on the inclinometer. Solve the problems of accurate measurement of wellbore trajectory and anti-collision warning at the same time in the interfering well section

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