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Instrumented drill string element

A drill string and component technology, which is applied to drill pipes, drill pipes, earth-moving drilling, etc., can solve the problems of difficulty in manufacturing and high implementation costs, and achieve the effect of good drilling resistance strength.

Inactive Publication Date: 2011-08-24
VAM DRILLING FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such sheaths show difficulty in manufacture and high cost of implementation

Method used

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  • Instrumented drill string element
  • Instrumented drill string element
  • Instrumented drill string element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] The drawings not only serve to complete the invention but also help to define it if necessary.

[0069] figure 1 and 2 A drill string element in the form of a drill rod 1 is shown. The drill rod mainly has an elongate tube 2 with an elongate middle part 3 .

[0070] The first engaging portion 5 and the second engaging portion 7 are arranged at opposite ends of the intermediate portion 3 .

[0071] The first joint part 5 and the second joint part 7 are shaped in a corresponding manner. By this it means that the first joint part 5 and the second joint part 7 can respectively cooperate with the second joint part 7 and the first joint part 5 similar to the elongated tube 2 to assemble the drill rods with each other .

[0072] Here, the first engaging part 5 is of the "male" type and the second engaging part 7 is of the "female" type, these parts being configured in a complementary manner. This thus means that the male coupling part 5 can be inserted into a female coup...

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PUM

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Abstract

Drill string element (1) comprising a tubular and elongate body (2) delimiting an interior surface (15) that longitudinally has at least one portion of revolution (18) and has a first hole (27, 37) formed in this tubular and elongate body (2). This first hole has a first end opening onto the said portion of revolution (18) and near to this first end has a longitudinal axis that intersects the interior surface (15) at an intersection site. The longitudinal axis forms, in projection in a first plane that passes through the central axis (14) of the portion of revolution (18) and that contains the intersection site, a first angle of non-zero value and, in projection in a second plane tangential to the interior surface at the said intersection site, a second angle of non-zero value.

Description

technical field [0001] The present invention relates to drill string elements and drill strings formed from such elements. Background technique [0002] Such elements are used in the field of drilling, especially oil drilling, to form a drill string extending from the well surface to the bottom of the well. [0003] These elements include, inter alia, drill pipes ("drill pipes" in English), heavy drill pipes and drill collars ("drill collars" in English). Specifications of the American Petroleum Institute (API), for example, determine such elements. [0004] During drilling, new elements are docked with existing elements in the drill string to extend the drill string and continue drilling deeper. [0005] Usually, measuring devices are arranged in the drill string to measure some physical quantity about the well, its surroundings or the drill string itself. These devices can be of various types, especially arranged near the lower end of the drill string. [0006] In some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/02
CPCE21B17/028
Inventor J·布莱
Owner VAM DRILLING FRANCE