Real‐time microseismic mapping of hydraulic fractures in Carthage, Texas

Maxwell, Shawn; Urbancic, Ted; Falls, S.; Zinno, R.J.

doi:10.1190/1.1815677

Cited by 18 publications

(7 citation statements)

References 4 publications

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“…2). 3 Seismic-source parameter analysis also may be used to assess qualitatively the variation in the fracture effective-ness. 12 Monitoring microseismicity in real time further allows for intervention during the stimulation, to increase the effectiveness by providing the on-site engineer with an updated image of the fracture growth.…”

Section: Potential Applicationsmentioning

confidence: 99%

“…12 Monitoring microseismicity in real time further allows for intervention during the stimulation, to increase the effectiveness by providing the on-site engineer with an updated image of the fracture growth. 3 The images also can be used to calibrate numerical simulations of the fracturing and to predict the probable drainage area when the well is brought on line. 13 This results in a better design tool for future wells and the option of optimizing the fracture design.…”

Section: Potential Applicationsmentioning

confidence: 99%

“…Since the Rangely experiment in the late 1960s, 1 a number of passive seismic experiments have been pursued in the petroleum industry with varying degrees of success. [2][3][4][5] Recently, a number of independent operators have successfully implemented passive seismic studies to address specific issues. The majority of these studies are under the umbrella of hydraulic fracturing, 2,3 where the microseismicity is used to map the fracture growth directly during well stimulations.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5] Recently, a number of independent operators have successfully implemented passive seismic studies to address specific issues. The majority of these studies are under the umbrella of hydraulic fracturing, 2,3 where the microseismicity is used to map the fracture growth directly during well stimulations. However, a number of other studies have been used to image deformations associated with primary production, 4 secondary recovery, 4 or waste-injection operations.…”

Section: Introductionmentioning

confidence: 99%

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The Potential Role of Passive Seismic Monitoring for Real-Time 4D Reservoir Characterization

Maxwell¹,

Urbancic²

2005

SPE Reservoir Evaluation &Amp; Engineering

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This paper details the application of passive seismic monitoring to image reservoir fracturing and deformation from the stage of an initial well completion to final field production. Instrumented oil fields with seismic arrays either permanently installed or temporarily deployed on wireline offer the possibility of imaging production activities in a real-time sense that complements other seismic reflection and engineering measurements. During the wellcompletion stage of development, real-time microseismic imaging offers the possibility of monitoring well stimulation. Fracture images may be used to optimize the fracture design and the net present value (NPV) of well production, as well as understand fracture complexity and the associated well-drainage pattern to target future well placement. During production stages, time-lapse microseismic imaging may be used for image deformation associated with fracturing or fracture reactivation from pressure or stress changes, strains in the overburden in fields with casingdeformation problems, and image fronts associated with secondary recovery. In this paper, several case studies are used to illustrate various potential applications, along with discussion of the potential limitations. The reservoir conditions necessary for the success ful application of the technology are presented along with a potential method to quantify the technical feasibility at a particular site.

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Section: Potential Applicationsmentioning

confidence: 99%

Section: Potential Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Potential Role of Passive Seismic Monitoring for Real-Time 4D Reservoir Characterization

Maxwell¹,

Urbancic²

2005

SPE Reservoir Evaluation &Amp; Engineering

Self Cite

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“…Over the last few years, microseismic monitoring (MSM) has rapidly grown as the most effective technology to monitor various reservoir processes, especially for mapping hydraulic fractures (House et al, 1996;Maxwell et al, 2000;Urbancic and Rutledge, 2000;Maxwell et al, 2002;Rutledge and Phillips, 2003;Maxwell, 2010). During a hydrofracture treatment, pore-pressure changes due to fluid injected into hydrocarbon reservoirs are usually accompanied by the occurrence of numerous small earthquakes, namely microseismic events (Warpinski et al, 2001;Shapiro and Dinske, 2009;Mayr et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Detection and Location of Microseismic Events with Low Signal-to-Noise Ratios

Tan

Hou

et al. 2014

All Days

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Microseismic monitoring of hydraulic fractures is the process of monitoring the small earthquakes induced by fluid injection during hydraulic fracture stimulation. The primary goal of microseismic monitoring is to map the source positions of microseismic events. However, in actual cases, location of the microseismic events could become problematic because a considerable part of the microseismic events show a low signal-to-noise ratio (SNR) and conventional event detection and location techniques tend to omit these events even though they may provide useful information for delineation of the hydraulic fractures. To address this problem, several improved methods are proposed in this study to increase the detectability and location accuracy of microseismic events with low signal-to-noise ratios.It has been well known that microseismic data processing generally composes of several critical steps, such as event detection, arrival picking, velocity modeling and source location. As for the event detection process, we develop a multi-channel semblance coefficient based method to identify the low SNR microseismic events. Our method utilizes a semblance coefficient to quantitatively determine the waveform similarity of windowed record segments after moveout correction, and uses it as a detector of the presence of a microseismic event. After identifying the events, a robust method is employed to pick their P-and S-wave arrival times. This method, referred to as SLPEA algorithm, is developed by integrating the differences in amplitude, polarization and statistic properties between seismic signal and ambient noise. Once the arrival times are gained, a simulated annealing (SA) based joint inversion algorithm is adopted to invert the velocity models and microseismic source positions. Innovations in this method include the use of a probability distribution function for determination of the source azimuth and a joint objective function for inversion of the velocity model and source position. The performance of the proposed methods is illustrated using field dataset recorded during an 11-stage hydraulic fracture treatment. 521 locatable microseismic events are detected from this dataset and nearly one third of them show a low signal-to-noise ratio. The source positions of these events are successfully gained through using the proposed methods, and analysis of the location results indicates that the low SNR microseismic events can reveal more details about the hydraulic fractures.

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Uncertainty reduction of hydraulic fracturing process

Sun

Dykstra

2016

2016 American Control Conference (ACC)

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Real‐time microseismic mapping of hydraulic fractures in Carthage, Texas

Cited by 18 publications

References 4 publications

The Potential Role of Passive Seismic Monitoring for Real-Time 4D Reservoir Characterization

The Potential Role of Passive Seismic Monitoring for Real-Time 4D Reservoir Characterization

Detection and Location of Microseismic Events with Low Signal-to-Noise Ratios

Uncertainty reduction of hydraulic fracturing process

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