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Liquid Purification

Device-for-positioning-a-tool-within-a-wellbore-flow-string

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Device for positioning a tool within a wellbore flow string

Details

Inventors: Miffre, Hubert;
Assignee: Societe Nationale Elf Aquitaine (Production) (Courbevoie, FR)
Primary Examiner: Leppink; James A.
Assistant Examiner: Dang; Hoang C.
Attorney, Agent or Firm: Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans

A tool-positioning device is composed of a branch assembly in which each branch tube communicates with each branch flow string, an intermediate assembly provided with convergent tubes and a connecting assembly provided with a spline for guiding the connecting assembly with respect to one of the flow strings. An orientation and guiding member is interposed between the intermediate assembly and pumping means housed within a production tube. The orientation and guiding member has a slit which is oriented with respect to the spline in order to have a fixed and invariable position.

DETAILED DESCRIPTION The device in accordance with the invention includes a branch assembly which is fixed in situ within the wellbore and is provided with a plurality of branch tubes, the lower end of each branch tube being adapted to communicate with a branch flow string of said wellbore.
A receptacle is fixed on the branch assembly and provided with bores from which access can be gained to the branch tubes and a fixed guiding spline is mounted on said receptacle.
The distinctive feature of the device lies in the fact that an orientation and guiding member is rigidly fixed to the receptacle and provided with a slit which is oriented with respect to the guiding spline and in which one of the tool-orientation splines is displaceably mounted.
In accordance with another distinctive feature, means are provided on said tool for cooperating with said orientation and guiding member in order to release and displace the tool head when said head is correctly positioned with respect to the selected branch flow string.
By virtue of the present invention, the servicing tool is pre-oriented at the surface by correct positioning of the orientation sleeve with respect to the branch flow string into which the tool is to be run.

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