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Lateral drilling method

a drilling method and lateral drilling technology, applied in the direction of directional drilling, wellbore/well accessories, sealing/packing, etc., can solve the problems of prior art tools, difficulty in advancing the bit, and creating additional challenges

Inactive Publication Date: 2018-06-14
IMPULSE DOWNHOLE SOLUTIONS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a method for drilling horizontal or lateral wellbores by using a special drilling string assembly. The assembly includes a friction reduction tool and an activation tool. The friction reduction tool helps to reduce friction between the wellbore and the drilling string, while the activation tool helps to activate the friction reduction tool. The use of these tools can improve the ability to drill horizontal wellbores and can also make the process of drilling easier and more efficient. The patent text also includes drawings and cross-sectional views of the drilling string assembly and its components. The technical effects of this patent text are improved efficiency and ease of drilling horizontal wellbores.

Problems solved by technology

Since there is little or no rotational movement in the drilling string or BHA during the slide, friction may cause difficulty in advancing the bit.
The inclusion of such prior art tools, however, can create additional challenges while drilling.

Method used

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Examples

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Embodiment Construction

[0021]The present disclosure is directed to drilling horizontal or lateral wellbores. A prior art directional drilling string assembly 25 in use in a horizontal or lateral wellbore 10 is illustrated in FIG. 1. The wellbore 10 includes a substantially vertical section 11, a build section 12, and a lateral section 13, which in this example is substantially horizontal but may be somewhat inclined. The build section 12 generally indicated in FIG. 1 denotes individual build and tangential portions that transition the wellbore 10 from the substantially vertical section 11 to the lateral section 13. It will be appreciated by those skilled in the art that the accompanying drawings are not drawn to scale in the interest of clarity; a build section 12, for example, may have portions with slower or faster build rates than illustrated here. Further, the drawings represent a cross-sectional view of a wellbore 10, with a single build section 12 providing a transition from the substantially vertic...

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Abstract

An improved method of drilling a substantially lateral section of a wellbore is provided. A first segment of a drilling string with a bottom hole assembly is extended into a wellbore. At determined intervals of the drilling string, a plurality of friction reduction segments are connected as the wellbore is drilled and the drilling string is extended into the wellbore. The friction reduction segments comprise a friction reduction tool and corresponding activation tool for activating the friction reduction tool. The activation tool selectively diverts drilling fluid into a motor powering the friction reduction tool or away from the motor, and can be a ball catch assembly that is activated when a suitably sized projectile is seated in the assembly. Multiple friction reduction segments can be connected to the drilling string and one or more of the plurality of segments can be activated.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of International Application No. PCT / CA2016 / 050794, filed on Jul. 7, 2016, which claims priority to United States Provisional. Applications Nos. 62 / 205,655, filed on Aug. 14, 2015; 62 / 207,679, filed on Aug. 20, 2015; and 62 / 220,859, filed on Sep. 18, 2015, the entireties of all of which are incorporated herein by reference.TECHNICAL FIELD[0002]The present disclosure relates to drilling horizontal or lateral wellbores, and in particular drilling string assemblies and methods for horizontal or lateral drilling.TECHNICAL BACKGROUND[0003]It is generally understood that there is a strong correlation between increased lateral length and increased initial production rates in a horizontal well. Accordingly, the development of horizontal well drilling in shale formations has pushed lateral lengths of horizontal wellbores to exceed 10,000 feet, with total measured distances of 20,000 feet.[0004]Limiting factors in...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B28/00E21B34/10E21B7/04E21B21/10E21B17/10
CPCE21B28/00E21B34/10E21B7/04E21B21/10E21B17/10E21B2034/007E21B7/24E21B7/046E21B2200/06E21B34/142
Inventor KINSELLA, DOUGLEROUX, KEVINLORENSON, TROYPARENTEAU, DWAYNE
Owner IMPULSE DOWNHOLE SOLUTIONS LTD
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