Conditioning Pre-existing Old Vertical Wells to Stimulate and Test Vaca Muerta Shale Productivity through the Application of Pinpoint Completion Techniques

Forni, P.; Bonapace, Juan Carlos; Kovalenko, Federico; Garcia, Mariano; Sorenson, Federico

doi:10.2118/172724-ms

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…Bonapace et al (2015) presents detailed information about various models of water management for shale reservoirs, Forni et al (2015) document field experiences about water management in Vaca Muerta completion wells. Recently, a variety of storage systems and water movement has been observed primarily in the Neuquén basin associated with these operations.…”

Section: Logisticsmentioning

confidence: 99%

Water Management for Tight and Shale Reservoir: A Review of What Has Been Learned and What Should Be Considered for Development in Argentina

Bonapace

2015

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This work builds on Bonapace et al. (2015), specifically discussing shale reservoir information related to several tight reservoirs in Argentina.Hydraulic fracturing has been ongoing in Argentina since the 1960s. The first treatments were performed using oil-based fluids. Throughout the years, new water-based fluids were introduced, as well as alcohol-water mixture fluids to foams, based on the reservoir requirements, economics, and safety and environmental issues. Currently, more than 95% of hydraulic fractures performed in the country are performed using aqueous-based fluids.In the last 10 years, exploration and development has begun for tight gas reservoirs and more recently several shale plays. To achieve commercial production, this type of reservoir requires extensive hydraulic fracturing applications which use large volumes of water. From 2004 to present, various exploration techniques have been performed in different reservoirs, such as tight formations at Lajas, Punta Rosada, Mulichinco (Neuquén Basin); Potrerillos (Cuyo Basin); D-129 (Golfo San Jorge Basin) and shale plays at Los Molles, Vaca Muerta, Agrio (Neuquén Basin), Cacheuta (Cuyo Basin), and D-129 (Golfo San Jorge Basin).This paper discusses aspects of water logistics necessary during the well completion phase, fracture treatment designs applied within these various unconventional reservoirs, and laboratory studies performed on flowback and produced waters to help evaluate their potential for use and/or reuse. The primary focus here will be related to various parts of the water cycle for these projects.• Stimulation and water sources are presented as detailed information concerning the type of stimulation performed in these reservoirs, volume of water, treatment types, fracturing fluids, additives used, and physical-chemical characteristics of various freshwater sources used. • Logistics are discussed for water storage and transport for single and multiple well pads. • Reuse of flowback and formation water addresses laboratory testing of various flowback and formation water and/or blends (freshwater and flowback water), treated and untreated including:-Physico-chemical characteristics of water (flowback and produced) from various wells.-Formation sensibility testing with flowback water from various tight and shale formations and usage possibilities. -Impact on proppant packs of floculants generated in nontraditional waters at various pH values. -A new low-residue CMHPG-metal crosslinked fracturing fluid formulated using no traditional water, i.e., untreated with high total dissolved solids (TDS).

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Section: Logisticsmentioning

confidence: 99%

Water Management for Tight and Shale Reservoir: A Review of What Has Been Learned and What Should Be Considered for Development in Argentina

Bonapace

2015

All Days

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An Investigation into Boosting Pressure in the Cavity while Hydra-Jet-Assisted Fracturing: An Improved Model with Insightful Sensitivity Analysis

et al. 2021

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Multipay Well Completion in Argentina: A Versatile Pinpoint Completion Technology Applied through Several Conventional, Tight, and Shale Reservoirs

Bonapace

Kovalenko

Sorenson³

et al. 2017

SPE Latin America and Caribbean Petroleum Engineering Conference

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Many fields in Argentina have multilayer reservoirs that require various stimulation techniques, primarily hydraulic fracturing. A variety of formations and types of reservoirs, such as conventional (mature fields) and unconventional (tight gas and shale), are the main focus in the Golfo San Jorge and Neuquén basin. The hydraulic fractures created in these basins present a variety of conditions and challenges related to depth, well architecture design, bottomhole temperature (BHT), reservoir pressure, and formation permeability. In 2006, a pinpoint completion technique was introduced to help achieve greater efficiency and reduce time and costs associated with completions. This paper presents experiences gained using this technology and proving such versatility in different types of reservoirs. The pinpoint technique, called hydrajet perforating annular-path treatment placement and proppant plugs for diversion (HPAP-PPD), was applied in new wells at different reservoir conditions. The history and evolution of this technique in Argentina was initiated in conventional oil reservoirs (mature fields in Golfo San Jorge) and then was introduced in the Neuquén basin in gas well completions. Throughout the last seven years, this technique has been tested and implemented in tight gas wells. More recently, it was used to improve a completion technique in a shale oil well. This completion method allowed operators to focus treatments in desired zones using specific treatment designs based on reservoir characteristics. Several case histories are presented for different basins, formations, and reservoirs types, highlighting lessons learned and reduced completion time.

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Conditioning Pre-existing Old Vertical Wells to Stimulate and Test Vaca Muerta Shale Productivity through the Application of Pinpoint Completion Techniques

Cited by 5 publications

References 11 publications

Water Management for Tight and Shale Reservoir: A Review of What Has Been Learned and What Should Be Considered for Development in Argentina

Water Management for Tight and Shale Reservoir: A Review of What Has Been Learned and What Should Be Considered for Development in Argentina

An Investigation into Boosting Pressure in the Cavity while Hydra-Jet-Assisted Fracturing: An Improved Model with Insightful Sensitivity Analysis

Multipay Well Completion in Argentina: A Versatile Pinpoint Completion Technology Applied through Several Conventional, Tight, and Shale Reservoirs

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