Water Control and Fracturing: A Reality

Mahajan, Mahesh; Rauf, Nusabela; Gilmore, Todd Gerard; Maylana, Alice

doi:10.2118/101019-ms

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…There are systems capable of mitigating the effects of water penetration in areas. They act by incorporating modifiers of permeability to fracturing fluids [15] [16] or the use of proppant systems capable of maintaining open preferably the top of fracture [13] [17].…”

Section: ) Proximity To Oil-water or Gas-oil Contactsmentioning

confidence: 99%

Selecting Oil Wells for Hydraulic Fracturing: A Comparison between Genetic-Fuzzy and Neuro Fuzzy Systems

Filho¹,

Castro²

2014

AJOR

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Hydraulic fracturing is widely used to increase oil well production and to reduce formation damage. Reservoir studies and engineering analyses are carried out to select the wells for this kind of operation. As the reservoir parameters have some diffuse characteristics, Fuzzy Inference Systems (FIS) have been tested for these selection processes in the last few years. This paper compares the performance of a neuro fuzzy system and a genetic fuzzy system used for selecting wells for hydraulic fracturing, with knowledge acquired from an operational data base to set the SIF membership functions. The training data and the validation data used were the same for both systems. We concluded that, despite the genetic fuzzy system being a newer process, it obtained better results than the neuro fuzzy system. Another conclusion was that, as the genetic fuzzy system can work with constraints, the membership functions setting kept the consistency of variable linguistic values.

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Section: ) Proximity To Oil-water or Gas-oil Contactsmentioning

confidence: 99%

Selecting Oil Wells for Hydraulic Fracturing: A Comparison between Genetic-Fuzzy and Neuro Fuzzy Systems

Filho¹,

Castro²

2014

AJOR

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“…Fracturing through coiled tubing (Spady et al, 1999;McConkey and Stromquist, 2000;and Rodvelt et al, 2001). Water conformance fracturing, incorporating relative permeability modifiers into the fracturing fluid to reduce posttreatment water production (Mahajan et al, 2006). Multizone fracturing of openhole horizontal wells (Surjaatmadja et al, 1998;and Love et al, 2001).…”

Section: Application Of New Technologymentioning

confidence: 99%

Hydraulic Fracturing Makes the Difference: New Life for Old Fields

Martín¹,

Rylance²

2010

Proceedings of North Africa Technical Conference and Exhibition

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An increasing percentage of worldwide hydrocarbon production is being achieved from mature fields, as new discoveries prove elusive and technically challenging to bring to market. In this environment, robust and efficient enhanced recovery from these mature assets will play an increasingly important role in production operations. Often used as an initial completion approach or selective remedial stimulation method, hydraulic fracturing is increasingly applied as the method of choice to bolster and improve such declining fields to restore and maintain higher production levels.Hydraulic fracturing is finding increasing application as a widespread approach to mature field redevelopment. This paper will explore the various factors that should be considered when proposing hydraulic fracturing for this purpose, given the very specific nature and condition of mature fields.Techniques that can be applied to determine various aspects of mature field fracturing operations will be discussed, together with approaches related to all areas of fracturing implementation; this will provide the reader with an ability to perform a first-pass assessment of the pros and cons of various approaches. In addition, there will be significant discussion related to the potential pitfalls associated with ill-prepared and inappropriate campaigns.Case histories will provided examples of mature field redevelopment utilising hydraulic fracturing as the principal approach. Candidate selection and pre-and post-frac production behaviour will be discussed, together with the lessons learned and improvements realised during the execution of these programmes.

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“…It is essential that low-damage water-control fluids be developed for tight gas wells to serve as an early pre-pad fluid or pre-pad fluid. As shown in Figure , such a pre-pad fluid is to not only penetrate into both sides of the proppant-supported fracture but also change the relative permeability of gas–water systems around the proppant-supported fracture, controlling a rapid increase in water-cut of gas wells after hydraulic fracturing. , …”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Water Control with Nanoemulsion as Pre-pad Fluid in Hydraulically Fracturing Tight Gas Formations

Zhang

Yuan

et al. 2017

Energy Fuels

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Experimental techniques have been developed to evaluate performance of nanoemulsions as pre-pad fluid for reducing water-cut in tight gas formations with multistage hydraulic fractures. More specifically, an aminopolysiloxane nanoemulsion was prepared and formulated in the laboratory for effective and efficient water control. The water-control mechanisms of nanoemulsions as pre-pad fluid in hydraulic fracturing were identified by performing the scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), spontaneous imbibition tests, and wettability measurements. The SEM and XPS tests confirm that certain changes occur in the element compositions and microstructure of the core surface before and after introducing the prepared nanoemulsions on the reservoir rock surface. Such changes irreversibly alter its wettability, indicated by the measured contact angle from 75°to 128°. During the displacement experiments, there exists a disproportionate permeability reduction on relative permeability of the gas−water systems. Gas relative permeability has only a small decline by less than 20% at different water saturations, while water relative permeability is reduced up to 60%. In addition, effective gas permeability for the core samples treated with nanoemulsions can be rapidly restored by the potential acid hydrolysis. This leads to not only creating new paths for gas flow in hydraulic fractures or invaded zones but also reducing the inertial resistance of gas flow in porous media by nanoemulsion retention.

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Water Control and Fracturing: A Reality

Cited by 9 publications

References 8 publications

Selecting Oil Wells for Hydraulic Fracturing: A Comparison between Genetic-Fuzzy and Neuro Fuzzy Systems

Selecting Oil Wells for Hydraulic Fracturing: A Comparison between Genetic-Fuzzy and Neuro Fuzzy Systems

Hydraulic Fracturing Makes the Difference: New Life for Old Fields

Performance Evaluation of Water Control with Nanoemulsion as Pre-pad Fluid in Hydraulically Fracturing Tight Gas Formations

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