Optimal phasing of charges in a perforating system and method

a perforating system and charge technology, applied in the field of perforation guns, to achieve the effect of efficient oil and gas flow rates
US20170275975A1Inactive Publication Date: 2017-09-28GEODYNAMICS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GEODYNAMICS
Publication Date
2017-09-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

An optimal phasing perforating phased gun system and method for accurate perforation in a deviated / horizontal wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with shaped charges in clusters. Within a cluster, the charges are separated into individual banks with a phase angle between the charges in each bank and an offset angle between banks. The number of charges per cluster, the phase angle and the offset angle are optimized such that there is a maximum probability of perforating into a low compression region in an upward and downward direction.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates generally to perforation guns that are used in the oil and gas industry to explosively perforate well casing and underground hydrocarbon bearing formations, and more particularly to an optimally phased perforating apparatus for explosively perforating a well casing and its surrounding underground hydrocarbon bearing formation.PRIOR ART AND BACKGROUND OF THE INVENTIONPrior Art Background

[0002] During a well completion process, a gun string assembly is positioned in an isolated zone in the wellbore casing. The gun string assembly comprises a plurality of perforating guns coupled to each other either through tandems or subs. The perforating gun is then fired, creating holes through the casing and the cement and into the targeted rock. These perforating holes connect the rock holding the oil and gas and the well bore. “During the completion of an oil and / or gas well, it is common to perforate the hydrocarbon containing formation w...

Claims

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