Drilling well and adjacent drilled well active anti-collision method

Abstract

The invention provides a drilling well and adjacent drilled well active anti-collision method. The method comprises: obtaining drilling well trajectory design information and adjacent drilled well actual drilling trajectory information; according to the information, obtaining wellhead coordinates of adjacent drilled wells in a drilling well wellhead coordinate system which is established using a drilling well wellhead position as reference; according to the above information, using adjacent well nearest distance scanning and adjacent well separation coefficient calculation, to obtain well section information of the drilling well and the adjacent drilled well, the well section needing anti-collision; obtaining data detected when a measurement exploring tube while drilling is lowered to the traditional MWD exploring tube position of a bottom hole assembly on the bottom of a drilling well, and a drill drills to the well section needing anti-collision, according to the data, obtaining relative spatial position data of the measurement exploring tube while drilling and an adjacent drilled well casing; according to the data and preset relative spatial position data of the measurement exploring tube while drilling and the drill in a drilling well, determining the relative spatial position of the drilling well to the adjacent drilled well. The method can determine relative spatial position of the drilling well to the adjacent wells, and prevents a problem of collision of two wells in a well drilling or well adjusting process.

Description

technical field [0001] The invention relates to the technical field of underground resource drilling and production engineering, in particular to an active anti-collision method between a well being drilled and an adjacent well drilled. Background technique [0002] With the gradual increase in the development of various oilfields, the development of remaining oil in old areas and marginal oil reservoirs has become an important way to increase reserves and production, making each oilfield increase adjustment wells, rolling development wells, cluster wells, and drilling various special types of wells gradually. The number of wells increased, the well pattern became denser, the distance between wells decreased, the number of upper and lower layered production wells increased, and the development of cluster wells in urban areas was strengthened. , It has also become an important measure to increase reserves and production in oil fields. In recent years, in the process of drill...

AI Technical Summary

Problems solved by technology

Although this method can realize real-time anti-collision early warning, because the detection is the signal generated by the vibration of the drill bit in the drilling that excites the casing vibration of the adjacent well, the strength of the signal itself is very weak, and the rotation of the drill pipe and the vibration of the ground equipment in the drilling are also very weak. will interfere with the quality of the signal

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