Granite Wash Field Study-Buffalo Wallow Field, Texas Panhandle

Ingram, Stephen; Paterniti, Isaac; Rothkopf, Brian; Stevenson, Chris

doi:10.2523/104546-ms

Cited by 3 publications

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“…The play is a series of stacked potential play zones, each of which should be treated differently and requires a more geophysically focused approach to achieve success. Due to the low porosity and permeability, cementation and the presence of microfractures make each interval a slightly different nut to crack [1].…”

Section: Introductionmentioning

confidence: 99%

Rational Rock Physics for Improved Velocity Prediction and Reservoir Properties Estimation for Granite Wash (Tight Sands) in Anadarko Basin, Texas

Durrani

Willson²,

Chen

et al. 2014

International Journal of Geophysics

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Due to the complex nature, deriving elastic properties from seismic data for the prolific Granite Wash reservoir (Pennsylvanian age) in the western Anadarko Basin Wheeler County (Texas) is quite a challenge. In this paper, we used rock physics tool to describe the diagenesis and accurate estimation of seismic velocities of P and S waves in Granite Wash reservoir. Hertz-Mindlin and Cementation (Dvorkin's) theories are applied to analyze the nature of the reservoir rocks (uncemented and cemented). In the implementation of rock physics diagnostics, three classical rock physics (empirical relations, Kuster-Toksöz, and Berryman) models are comparatively analyzed for velocity prediction taking into account the pore shape geometry. An empirical ( P -S ) relationship is also generated calibrated with core data for shear wave velocity prediction. Finally, we discussed the advantages of each rock physics model in detail. In addition, cross-plots of unconventional attributes help us in the clear separation of anomalous zone and lithologic properties of sand and shale facies over conventional attributes.

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Section: Introductionmentioning

confidence: 99%

Rational Rock Physics for Improved Velocity Prediction and Reservoir Properties Estimation for Granite Wash (Tight Sands) in Anadarko Basin, Texas

Durrani

Willson²,

Chen

et al. 2014

International Journal of Geophysics

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An Overview of Completion and Stimulation Techniques and Production Trends in Granite Wash Horizontal Wells

Srinivasan

Dean

Olukoya

et al. 2011

North American Unconventional Gas Conference and Exhibition

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Horizontal well completions in the Granite Wash formations of the Anadarko basin in Western Oklahoma and the Texas Panhandle approximately doubled year on year since 2006. During this period, the evolution of horizontal well completion and stimulation practices coupled with diligent identification and selection of lateral landing in high reservoir quality has resulted in significant production gains. Various techniques utilizing large samples of well production and completion/stimulation parameters are common in high well volume resource plays to determine well performance drivers. Several studies have been done in the Granite Wash, mostly in vertical wells with multiple pay zones co-mingled. Prior studies are isolated to smaller well samples or are focused on a single well completion strategy. This paper investigates two different areas of the Granite Wash consisting of seventy three horizontal wells in Western Oklahoma and one hundred sixty five horizontal wells in the Texas Panhandle completed in 2007 through the end of 2009. The objective is correlating completion and stimulation parameters along with lateral length with production trends. First, an overview of production trends and average probable production in different regions is presented. The second half of the paper evaluates completion and stimulation parameters including but not limited to fluid and proppant pumped per unit length of completed interval, total fluid, total proppants, lateral length, number of frac stages and average proppant concentration.

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Texas Panhandle Granite Wash Formation: Horizontal Development Solutions

Rothkopf¹,

Christiansen²,

Godwin³

et al. 2011

SPE Annual Technical Conference and Exhibition

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The Granite Wash formation in the Texas Panhandle is an active horizontal drilling trend where high initial gas rates combined with rich condensate yields create a rewarding investment opportunity for operators. The Granite Wash formation has been a drilling target for over 30 years but development accelerated rapidly after November 2004 when 20-acre downspacing was approved in the Buffalo Wallow field. In the years 2004-2008, vertical infill development was actively pursued with operators using an "assembly line" methodology that concentrated on cost reduction to achieve economic success. When soft gas prices made vertical wells economically challenging, operators turned to horizontal wells to improve the trend's economics. Previous papers [Edwards (2010), Ingram (2006)] have explored optimizing completion technology in the Granite Wash so this paper's objective is to find solutions to questions about initial production, rate decline, and liquid yields by examining the reservoir and fluid properties. The paper uses techniques developed for generalized tight gas sand reservoirs and applies Granite Wash formation data to create focused solutions. The data presented show the horizontal wells' high initial rates can be correlated to the offset vertical well performance and the initial production declines are defined by linear flow. In addition, a technique for optimizing the number of completion stages is presented and the condensate yields are explained using an Equation of State (EoS).

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Granite Wash Field Study-Buffalo Wallow Field, Texas Panhandle

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractOne of the major producing zones in the Texas panhandle is the Granite Wash. The Granite Wash play is currently focused on Wheeler and Hemphill counties on the Oklahoma border and covers more than 1,000 sq mi of tight-sand formations.

Cited by 3 publications

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Rational Rock Physics for Improved Velocity Prediction and Reservoir Properties Estimation for Granite Wash (Tight Sands) in Anadarko Basin, Texas

Rational Rock Physics for Improved Velocity Prediction and Reservoir Properties Estimation for Granite Wash (Tight Sands) in Anadarko Basin, Texas

An Overview of Completion and Stimulation Techniques and Production Trends in Granite Wash Horizontal Wells

Texas Panhandle Granite Wash Formation: Horizontal Development Solutions

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