Development of Multi-Stage Fracturing System and Wellbore Tractor to Enable Zonal Isolation During Stimulation and EGS Operations in Horizontal Wellbores
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Published:2022-09-26
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Container-title:Day 3 Wed, October 05, 2022
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Author:
Fleckenstein William1, Miskimins Jennifer1, Kazemi Hossein1, Eustes Alfred1, Abdimaulen Dias1, Mindygaliyeva Balnur1, Uzun Ozan1, Amini Kaveh1, Hill Tom2, Mailand Jason2, Henschel Robert2, King George3, Ortiz Santos3, Keyes Cullen4
Affiliation:
1. Colorado School of Mines 2. Tejas RE 3. KSWC-HERCON Inc 4. Defiant Exploration
Abstract
Abstract
This paper discusses the progress on a project funded by the DOE Utah FORGE (Frontier Observatory for Research in Geothermal Energy) for the development of a subsurface heat exchanger for Enhanced Geothermal Systems (EGS) using unique casing sleeves cemented in place and are used first as a system for rapid and inexpensive multi-stage stimulations and second to perform conformance control functions at 225 °C. The proposed sleeves will use a single-sized dissolvable ball to open for fracture stimulation. After stimulation, and once the balls dissolve, the sleeves are open for immediate fluid injection. A separately designed wellbore tractor specific for both fluid detection and valve manipulation is then deployed to detect and control the injection entry points to create an effective EGS through paired horizontal injectors and open hole producers. The wells will be connected through multiple networks of induced and natural fractures that can be controlled throughout the field life.
Reference28 articles.
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1. Comprehensive data set of in situ hydraulic stimulation experiments for geothermal purposes at the Äspö Hard Rock Laboratory (Sweden);Earth System Science Data;2024-01-12 2. Laboratory Measurements of Permeability and Porosity of the Matrix and Created Fractures: Application to the Pressure Falloff Analysis Following Well Stimulation to Determine Effective Fracture Spacing in Field;Day 1 Mon, October 16, 2023;2023-10-09 3. Development of Multi-Stage Fracturing System and Wellbore Tractor to Enable Zonal Isolation During Stimulation and Enhanced Geothermal System Operations in Horizontal Wellbores - First Year Progress;Day 3 Wed, October 18, 2023;2023-10-09 4. Deformation, Damage, And Fracture in Hot Dry Rock of Geothermal Reservoir Under Uniaxial and Diametrical Compression Using 3D-DIC;Day 2 Tue, October 17, 2023;2023-10-09 5. Development of Multi-Stage Fracturing System and Wellbore Tractor to Enable Zonal Isolation During Stimulation and EGS Operations in Horizontal Wellbores;Day 3 Wed, October 05, 2022;2022-09-26
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