Drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus

A technology of trajectory design and modeling method, which is applied in the direction of wellbore/well components, calculation, earthwork drilling and production, etc.

Active Publication Date: 2016-05-04
PETROCHINA CO LTD
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[0004] The main purpose of the embodiments of the present invention is to provide a pre-drilled three-dimensional wellbore modeling method and device based on dri

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  • Drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus
  • Drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus
  • Drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] Embodiments of the present invention provide a pre-drilled three-dimensional wellbore modeling method and device based on drilling trajectory design parameters. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Embodiments of the present invention provide a pre-drilled three-dimensional wellbore modeling method based on drilling trajectory design parameters, such as figure 1 As shown, the pre-dri...

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Abstract

The invention provides a drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus. The method comprises the steps of obtaining a drilling trajectory and hole diameter data of a drilled well, wherein the drilling trajectory comprises a well depth, an azimuth angle and a hole drift angle of each diameter measurement point; according to the drilling trajectory and the hole diameter data, calculating three-dimensional space coordinates of a hole diameter measurement point; according to the three-dimensional space coordinates, generating circumferential hole diameter data corresponding to the hole diameter measurement point; establishing a drilled well database at least containing the hole diameter data and the circumferential hole diameter data; according to the drilled well database, establishing a three-dimensional hole model; and substituting a pre-drilling trajectory design parameter and geologic data into the three-dimensional hole model to calculate a hole shrinkage rate and a hole diameter expanding rate of pre-drilling. Through the modeling method and apparatus, the hole shrinkage rate and the hole diameter expanding rate of pre-drilling are calculated according to the established three-dimensional hole mathematic model, so that a specific condition of a real hole can be reflected and predicted more accurately and comprehensively, and data support can be provided for hole engineering design work.

Description

technical field [0001] The present invention relates to oil drilling detection technology, in particular to a pre-drilled three-dimensional wellbore modeling method and device based on drilling trajectory design parameters. Background technique [0002] In oil drilling operations, due to the complex and changeable downhole environment and geological conditions, the actual drilling trajectory often deviates from the designed trajectory, and the wellbore diameter is prone to serious expansion and contraction when drilling into special formations , Mastering the parameters of diameter expansion ratio and diameter reduction ratio has an important guiding role in engineering design such as drilling trajectory optimization, wellbore stability evaluation, and cement dosage calculation. [0003] The visualized modeling of the drilled wellbore is realized based on the logging data, which can guide the follow-up engineering after the completion of the wellbore. However, visual modeli...

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Application Information

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IPC IPC(8): G06F17/50E21B47/022E21B47/08
CPCE21B47/022E21B47/08G06F30/00
Inventor 邓峰陶冶刘新云王梦颖孔璐琳梁奇敏张小宁
Owner PETROCHINA CO LTD
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