The Effects of Unbroken Fracture Fluid on Gaswell Performance

Voneiff, G.W.; Robinson, B.M.; Holditch, Stephen A.

doi:10.2118/26664-pa

Cited by 41 publications

(15 citation statements)

References 5 publications

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“…This gridding technique we employed was used by others (Lolon et al, 2004;Voneiff et al, 1996) for research work and field studies. The wellbore is in cell (1 Â 1 Â 1) and is operated at constant bottomhole pressure (BHP).…”

Section: Fractured Well Modelmentioning

confidence: 99%

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Effect of gel damage on fracture fluid cleanup and long-term recovery in tight gas reservoirs

Wang

Holditch

McVay

2012

Journal of Natural Gas Science and Engineering

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Section: Fractured Well Modelmentioning

confidence: 99%

“…Previously, Voneiff et al (1996) used a three-phase, 2D simulator to investigate the effects of unbroken fracture fluid on gas well performances. Their model had three phases: gas, formation water, and unbroken fracture fluid.…”

Section: Simulation Of Gel Damagementioning

confidence: 99%

Effect of gel damage on fracture fluid cleanup and long-term recovery in tight gas reservoirs

Wang

Holditch

McVay

2012

Journal of Natural Gas Science and Engineering

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“…This gridding technique was used by others (Lolon et al 2003;Voneiff et al 1996) for research work and field studies. This gridding technique was used by others (Lolon et al 2003;Voneiff et al 1996) for research work and field studies.…”

Section: Steps In Modeling Fracture-fluid Cleanupmentioning

confidence: 99%

Modeling Fracture-Fluid Cleanup in Tight-Gas Wells

2010

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On occasion, a hydraulically fractured tight-gas well does not perform up to its potential because of slow or incomplete fracturefluid cleanup. A number of papers have been written to address individual factors related to fracture-fluid cleanup, but many questions as to which factors mostly affect gas production from such wells remain unanswered. Numerical reservoir simulation is one of the best methods to study the fracture-fluid-cleanup problem. Continuing from our previous publication ) on the effect of gel damage on fracture cleanup, we used reservoir simulation to analyze systematically the factors that affect fracturefluid cleanup and gas recovery from tight-gas wells.We first developed a comprehensive data set for typical tight gas reservoirs and then ran single-phase-flow cases for each reservoir and fracture scenario to establish the idealized base-case gas recovery. We then systematically evaluated the following factors: multiphase gas and water flow, proppant crushing, polymer filter cake, and, finally, yield stress of concentrated gel in the fracture. The gel in the fracture is concentrated because of fluid leakoff during the fracture treatment. We evaluated these factors additively in the order listed. We found that the most important factor that reduces fracture-fluid cleanup and gas recovery is the gel strength of the fluid that remains in the fracture at the end of the treatment.This paper illustrates the complexity of the fracture-fluidcleanup problem and points out the need to use reservoir simulation and to include all the pertinent factors to model fracture-fluid cleanup rigorously. The procedures presented can provide a useful, systematic guide to engineers in conducting a numerical simulation study of fracture-fluid cleanup.

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“…Catastrophic formation damage due to fracturing fluids is not likely. 8,9 The high temperature (275 o F) and gel breaker should have degraded the fracturing fluid. Lab tests indicated a returned fluid viscosity of 6 cp at room temperature (broken).…”

Section: D14-1 Post Fracture Evaluationmentioning

confidence: 99%

Application of Fracture Technology in the Hanoi Trough, Vietnam

Cipolla¹,

Michael²,

Wilson³

2000

Proceedings of SPE/CERI Gas Technology Symposium

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper presents a detailed case history of the evolution of fracture technology in the Hanoi Trough, Vietnam. The target formations are stacked fluvial channel deposits that occur at depths of 10,000 to 12,000 ft with permeability ranging from 0.01 to 1 mD. The first three wells drilled in 1996-97 were fracture stimulated, but only one of the three treatments was successful. Three more wells were drilled in 1999 and significant improvements in completion and hydraulic fracture technology were implemented. This paper presents a comprehensive data set, which includes the evaluation and integration of pre-& post-fracture well tests and log data with detailed fracture modeling analyses to understand and improve fracture performance in this complex environment.

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The Effects of Unbroken Fracture Fluid on Gaswell Performance

Cited by 41 publications

References 5 publications

Effect of gel damage on fracture fluid cleanup and long-term recovery in tight gas reservoirs

Effect of gel damage on fracture fluid cleanup and long-term recovery in tight gas reservoirs

Modeling Fracture-Fluid Cleanup in Tight-Gas Wells

Application of Fracture Technology in the Hanoi Trough, Vietnam

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