RESERVOIR SIMULATOR FOR IMPROVED RECOVERY OF COALBED METHANE (ICBM) PART I: MODEL FORMULATION AND COMPARISON  

Oleh:

Syahrial, Ego

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Lemigas Scientific Contributions to Petroleum Science & Technology vol. 32 no. 03 (Dec. 2009), page 169.
Topik: Adsorption; Desorption; Improved Recovery of Coalbed Methane (ICBM); CO2 Sequestration

Ketersediaan

Perpustakaan PKPM Nomor Panggil: L15.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Sequestration of CO2 in deep unmined coal seams is currently under development for improved recovery of coalbed methane (iCBM) as well as permanent storage of CO]" Recent studies have shown that CO2 displaces methane by adsorbing more readily onto the coal matrix compared to other greenhouse gases, and could therefore contribute towards reducing global warming. in order to carry out a more accurate assessment of the poten­tial of ICBM and CO] sequestration, .field based numerical simulations are required. Exist­ing simulators for primary CBM (coalbed methane) recovery cannot be applied since the process of CO2 injection in partially desorbed coalbeds is highly complex and not fully understood. The principal challenges encountered in numerical modelling of ICBM/C02 sequestration processes which need to be solved include: (J) two-phase flow, (2) multiple gas components, (3) impact of coal matrix swelling and shrinkage on permeability, and (4) mixed gas sorption. The objective of this part I of this two-part paper series is to develop a two-phase, multi-component CH~-CO] simulator for use in the assessment of CO]-ICBM recovery and CO] sequestration potential of coal seams. The developed formulation was tested and compared to model the improved coalbed methane (ICBM) recovery with pure CO] injection using a published data.

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