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A method and device for drilling a well using a deflection tool

A tool and deflecting technology, applied in the field of wellbore trajectory budget and control in oil drilling technology

Active Publication Date: 2016-02-10
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to provide a method and device for drilling with a deflection tool, which can calculate the spatial coordinates of any trajectory point in the current well section, and adjust the parameters of the deflection tool by using the error value technology between the current spatial coordinates and the design coordinates to solve the current problem. In the existing technology, the deflection tool can only be adjusted according to the parameters of adjacent measurement points, which improves the accuracy of wellbore trajectory prediction and control accuracy in actual drilling

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  • A method and device for drilling a well using a deflection tool
  • A method and device for drilling a well using a deflection tool
  • A method and device for drilling a well using a deflection tool

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Embodiment 1

[0121] Embodiment 1 is a method of drilling using a deflection tool provided by the present invention, Figure 9 It is a flow chart of the method for drilling with a deflection tool. Such as Figure 9 As shown, a method of drilling using a deflection tool, comprising:

[0122] S1: Determine the spatial coordinates of any wellbore trajectory point M on the well section formed by adjacent measurement points A and B in the wellbore trajectory;

[0123] S2: Comparing the spatial coordinates determined in S2 with the wellbore trajectory design coordinates and obtaining an error value;

[0124] S3: Using the error value described in S3 to adjust the parameters of the deflection tool;

[0125] S4: The deflection tool performs drilling based on the adjusted parameters;

[0126] Wherein, said S1 includes:

[0127] Assume that the wellbore trajectory between two adjacent measurement points A and B in the wellbore trajectory is a circular arc, located in a certain inclined plane in ...

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Abstract

The invention provides a drilling method and device using deflecting tools. The method includes: S1, determining space coordinates of any wellbore trajectory point M on a segment, composed of adjacent measurement points A and B in a wellbore trajectory; S2, comparing the space coordinates determined in the step S1 to wellbore trajectory designed coordinates to obtain an error value; S3, adjusting parameters of deflecting tools according to the error value obtained in step S2; S4, drilling based on the adjusted parameters by the deflecting tools. The drilling method and device using deflecting tools has the advantages that prediction accuracy and control precision are improved for wellbore trajectories in drilling operations.

Description

technical field [0001] The invention relates to the field of wellbore trajectory budget and control in petroleum drilling technology, in particular to a drilling method and device using a deflection tool. Background technique [0002] In the field of petroleum drilling technology, determining the wellbore trajectory (also called "wellbore axis") is a very cumbersome work in drilling engineering. With the refinement of geological exploration targets, especially the accurate positioning of underground bullseyes by directional wells, the requirements for determining wellbore trajectories are getting higher and higher. [0003] The final wellbore trajectory is achieved by drilling. In the actual drilling process, the deflection direction of the drill bit is changed by continuously controlling the parameters of the deflection tool, and then the direction of the wellbore is continuously controlled, and finally the wellbore in the actual drilling process follows the pre-designed w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/06E21B47/022
Inventor 曹传文马振钟满发冯伟
Owner PETROCHINA CO LTD
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