Drill Pipe External Upset Recessed Flow Paths Hydrojacking

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Solution Overview

Problem

Traditional drill pipes often experience hydrojacking issues when drilling large diameter wells, where the external upsets restrict fluid flow and can cause hydraulic locking, leading to operational challenges and equipment damage.

Innovation Solution

A drill pipe assembly featuring an elongate drill pipe with external upsets that include recessed flow paths, allowing for at least 65% of the circumference to be used, which reduces hydrojacking and provides relief by allowing fluid to pass through, while also being designed for easy assembly and maintenance with interchangeable extensions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional drill pipes with external upsets are used, then structural strength is improved, but hydrojacking occurs due to restricted fluid flow

Engineering Contradiction:

Improvestructural strengthVSAvoidhydrojacking

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The external upset is designed with recessed flow paths that create a porous-like structure, allowing fluid to pass through while maintaining the structural strength of the upset. This resolves the contradiction by enabling both structural integrity and fluid flow capability.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The flow paths are recessed into specific portions of the external upset, creating local variations in structure. This allows the upset to maintain strength where needed while providing fluid flow channels in specific locations, preventing hydrojacking without compromising overall structural integrity.

Inventive Principle:

Principle #3Local quality

2Stability of the object's composition

If external upsets are added to drill pipe, then drilling stability is improved, but fluid flow is restricted causing hydrojacking

Engineering Contradiction:

Improvedrilling stabilityVSAvoidfluid flow

Core Design Contradiction:

Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The recessed flow paths create a porous structure within the external upset, allowing fluid to penetrate and flow through the upset while maintaining the stability and structural integrity of the drill pipe assembly during drilling operations.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The flow paths are nested within the external upset structure, with recesses formed inside the upset material. This nesting allows fluid channels to be integrated within the upset without compromising the external stability and structural form of the drill pipe.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Device complexity

If conventional drill pipes are used, then simplicity is maintained, but frequent thread replacements are needed due to hydrojacking damage

Engineering Contradiction:

ImprovesimplicityVSAvoiddrilling efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

By incorporating recessed flow paths into the external upset, the drill pipe maintains relative structural simplicity while preventing hydrojacking damage that would otherwise require frequent thread replacements, thereby improving drilling efficiency and productivity.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The external upset, which could be seen as a complexity addition, is designed with recessed flow paths that convert the potential harm of restricted fluid flow into a benefit by creating controlled flow channels that prevent hydrojacking, reducing maintenance needs and improving overall drilling efficiency.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The recessed flow paths in the external upsets of the drill pipe assembly effectively prevent hydrojacking, enabling smoother drilling operations and reducing the need for frequent thread replacements by allowing easy maintenance and transportation of individual extensions, thus enhancing drilling efficiency and cost-effectiveness.

Implementation Method 1

the external upset having recessed flow paths... the recessed flow paths providing relief against hydrojacking

Methodology Applied

Scientific EffectFluid flow through recessed paths:

Data Source

PatentUS8708067B2Drill pipe

Publication Date: 2014.04.29 SOLLIAM ENERGY SERVICES INC

AI summary

A drill pipe assembly includes an elongate drill pipe and a drill pipe extension. The elongate drill pipe has a first threaded end and a second threaded end. The drill pipe extension has a first threaded end and a second threaded end. The second threaded end matingly engaging the first threaded end of the elongate drill pipe. The first threaded end being adapted to matingly engage an additional component of a drill string. The drill pipe extension has an external upset. The external upset has recessed flow paths.