Methods to estimate downhole drilling vibration indices from surface measurement

A surface and index technology, applied in drilling measurement, drilling automatic control system, drilling equipment, etc., can solve problems such as inability to diagnose, estimate and indicate downhole functional failures in real time.

Inactive Publication Date: 2012-09-19
EXXONMOBIL UPSTREAM RES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods do not enable real-time diagnostic estimation and indication of downhole functional failures

Method used

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  • Methods to estimate downhole drilling vibration indices from surface measurement
  • Methods to estimate downhole drilling vibration indices from surface measurement
  • Methods to estimate downhole drilling vibration indices from surface measurement

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Embodiment Construction

[0046] In the following detailed description, specific aspects and features of the claimed subject matter are described in conjunction with a number of exemplary methods and embodiments. In this sense, however, the following descriptions are by way of illustration only, and are intended to provide a concise description of exemplary embodiments only, as they are detailed descriptions of particular embodiments or specific uses of the current technology. Furthermore, where a particular aspect or feature is described in connection with a particular embodiment, this aspect or feature can be found and / or implemented, if appropriate, in other embodiments of the invention. Therefore, the claimed invention is not limited to the specific embodiments described below, but the invention includes all alternatives, modifications and equivalents falling within the scope of the figures and claimed subject matter.

[0047] figure 1 A side view of a relatively common drilling operation at a dri...

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Abstract

The invention relates to a method to estimate severity of downhole vibration for a wellbore drill tool assembly, comprising: identifying a dataset comprising selected drill tool assembly parameters; selecting a reference level of downhole vibration index for the drill tool assembly; identifying a surface drilling parameter and calculating a reference surface vibration attribute for the selected reference level of downhole vibration index; determining a surface parameter vibration attribute derived from at least one surface measurement or observation obtained in a drilling operation, the determined surface parameter vibration attribute corresponding to the identified surface drilling parameter; and estimating a downhole vibration index severity indicator by evaluating the determined surface parameter vibration attribute with respect to the identified reference surface vibration attribute.

Description

[0001] related application [0002] This application is related to and claims the benefit of US Provisional Application 61 / 232,275, filed August 7, 2009, and US Provisional Application 61 / 232,274, filed August 7, 2009. This application also relates to and claims the benefit of US Provisional Application 61 / 364,247, filed July 14, 2010. technical field [0003] The present disclosure relates generally to the field of drilling operations, and more particularly to monitoring and optimizing drilling operations utilizing surface measurements and estimation techniques taught herein. More specifically, the present disclosure relates to methods of estimating effective vibrational properties of the bottom of a drill tool assembly (eg, at or near the drill bit) based on estimates of selected surface operating parameters. Background technique [0004] This section introduces various aspects of technology that may be associated with certain embodiments of the invention, thereby facilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/40
CPCE21B44/00E21B45/00
Inventor M・D・埃尔塔什J・R・贝利D・N・伯奇L・王P・E・帕斯图克S・顺达拉拉曼
Owner EXXONMOBIL UPSTREAM RES CO
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