A Methodological Workflow for Assessment and Design of a Huff-N-Puff Hydrocarbon Gas Injection Pilot Test as an EOR Technique for Eagle Ford Shale Oil Reservoirs
- Amanda Baldwin (Chesapeake Energy) | Leo Lasecki (Chesapeake Energy) | David Mohrbacher (Chesapeake Energy) | Lee Porter (Chesapeake Energy) | Triffon Tatarin (Chesapeake Energy) | Brian Nicoud (Chesapeake Energy) | Grant Taylor (Chesapeake Energy) | Jose Zaghloul (Chesapeake Energy) | Basar Basbug (NITEC) | Tuba Firincioglu (NITEC) | Reza Barati Ghahfarokhi (University of Kansas)
- Document ID
- Society of Petroleum Engineers
- SPE Improved Oil Recovery Conference, 31 August - 4 September, Tulsa, Oklahoma, USA
- Publication Date
- Document Type
- Conference Paper
- 2020. Society of Petroleum Engineers
- 5 Reservoir Desciption & Dynamics, 4.3.4 Scale, 5.4.2 Gas Injection Methods, 5.1 Reservoir Characterisation, 7.2 Risk Management and Decision-Making, 5.8.4 Shale Oil, 7 Management and Information, 7.2.1 Risk, Uncertainty and Risk Assessment, 5.4 Improved and Enhanced Recovery, 5.4 Improved and Enhanced Recovery
- Eagle Ford, Shale EOR, Pilot Design, Gas Injection, Huff-n-Puff
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Implementation of miscible gas huff and puff (HnP) for Improved Oil Recovery (IOR) requires timely identification of prospective projects, a demonstration of economic feasibility through pilot testing, and efficient scale-up of HnP operations. HnP pilot design and execution of the pilot project requires a minimum of 9 to 12 months to procure, and another 8 to 12 months to construct and operate. A substantial capital investment, approximately $1 to $5 million per pilot well, is also required (Texas Railroad Commission & Industry Operators). The lead time for procuring specialized compression can require 9 to 15 months. These early purchases comprise a large proportion of project capital investment.
Collaboration by a variety of technical disciplines is required to efficiently design, construct, and operate a pilot with the goal of expanding IOR operations. An effective, collaborative approach allows for development of a HnP design that integrates both subsurface and surface design criteria.
A workflow for design of HnP pilot testing was developed to coordinate concurrent project efforts including completion of reservoir characterization, engineering, permitting, stakeholder review and approvals, gas contracting, construction, testing and full-scale execution. Effective coordination of these efforts will result in efficient project implementation with minimal impacts on project scope, schedule and cost. Use of the workflow also allows for timely identification and mitigation of multiple project risks associated with design, construction and operation of IOR.
Well executed pilot tests will accelerate the learning curve for application of HnP IOR in Eagle Ford wells; resulting in lower capital costs, lower operating costs, and increased operational reliability. Pilot test results will also be used to up-scale IOR operations in a cost-effective manner.
|File Size||884 KB||Number of Pages||16|
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