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Downhole Tool Deployment Measurement Method and Apparatus

a technology of measurement method and tool, which is applied in the field of downhole tool deployment measurement method and apparatus, can solve problems such as large footprint at the surfa

Inactive Publication Date: 2012-04-26
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes an apparatus and method for conveying a tool into a drill string while drilling a wellbore. The apparatus includes a line and a conveying assembly at the surface that releases the line to convey the tool into the drill string. The method involves allowing the tool to free fall to a first location in the drill string and then pumping it from the first location to a second location while measuring the length of the line that is conveyed along with the tool. The technical effect of this invention is to provide a more efficient and accurate way to convey tools into a drill string during wellbore drilling operations.

Problems solved by technology

The surface equipment and lines may cause downtime due to maintenance, as the lines and equipment have to transmit power over a large distance downhole without fault.
Further, surface equipment may result in a large footprint at the surface, which is also not desirable.

Method used

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  • Downhole Tool Deployment Measurement Method and Apparatus
  • Downhole Tool Deployment Measurement Method and Apparatus
  • Downhole Tool Deployment Measurement Method and Apparatus

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013]FIG. 1 is a schematic diagram of an exemplary drilling system 100. The diagram shows a wellbore 110 that includes an upper section 111 with a casing 112 installed therein and a lower section 114 being drilled with a drill string 118. The drill string 118 includes a tubular member 116 carrying borehole assembly (or “BHA”) 130 at its bottom end. The tubular member 116 may be formed by joining drill pipe sections or it may be composed of a coiled-tubing. A drill bit 150 is attached to the bottom end of the BHA 130 to disintegrate rocks in the earth formation to drill the wellbore 110.

[0014]The drill string 118 is shown conveyed into the wellbore 110 from a rig 180 at the surface 167. The rig 180 shown is a land rig for ease of explanation. The apparatus and methods disclosed herein may also be utilized when an offshore rig (not shown) is used. A rotary table 169 or a top drive (not shown) coupled to the drill string 118 may be utilized to rotate the drill string 118 at the surfac...

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PUM

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Abstract

In one aspect, an apparatus for conveying a tool while drilling a wellbore is provided. The apparatus includes a line coupled to the tool, a conveying assembly coupled to the line, the conveying assembly located at a surface and configured to release the line to convey the tool into the drill string and a sub including a passage for the line to pass therethrough. The apparatus also includes a measuring device configured to determine a position of the tool within the drill string by determining a length of the line that is conveyed along with the tool into the drill string.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application takes priority from U.S. Provisional Application Ser. No. 61 / 406,802, filed on Oct. 26, 2010, which is incorporated herein in its entirety by reference.BACKGROUND[0002]1. Field of the Disclosure[0003]This invention relates generally to tools conveyed into a wellbore while forming the wellbore. More specifically, the invention relates to methods and apparatus for determining a position or speed of a tool conveyed into a drill string while a downhole apparatus is downhole to form the wellbore.[0004]2. Background of the Related Art[0005]Wellbores for use in subterranean extraction of hydrocarbons generally comprise a main wellbore section running in a substantially vertical direction along its length. Lateral wellbores may be formed from the main wellbore into the subterranean rock formation surrounding the main wellbore. The lateral wellbores are usually formed to enhance the hydrocarbon production of the main wellbore and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B47/00
CPCE21B47/09
Inventor HETZ, DORONEVANS, JOHN G.
Owner BAKER HUGHES INC