The Development of Microbial Enhanced Oil Recovery (MEOR) Technology

Transcription

1 27 th November 2014 Palace Hotel Tokyo JOGMEC Techno Forum 2014 R&D of JOGMEC and Japanese Companies The Development of Microbial Enhanced Oil Recovery (MEOR) Technology Dr. Toshiyuki Anraku, General Manager, Reservoir Engineering Department, Technical Division, Japan Petroleum Exploration Co., Ltd. (JAPEX)

2 2 Agenda 1. Introduction 2. Concept 3. Plans 4. Results

3 1. Introduction 3

4 Objective Achieve 10% increment of oil recovery with MEOR, and strengthen relationship with NOC/IOC Contribute to E&P business 4 E&P: Exploration and Production Tertiary Recovery +10%(Target value) MEOR: Microbial Enhanced Oil Recovery Solution MEOR technology Residual oil 50~75% NOC/IOC Needs Improvement of recovery NOC: National Oil Company IOC: International major Oil Company (100% = OOIP) Primary Recovery 10~30% Secondary Recovery (waterflood) +15~20% OOIP: Original Oil In Place

5 2. Concept 5

6 Concept Injecting additives, Accelerating indigenous microbial activity, Resulting in EOR 6 Low cost Eco-friendly Injected water can act as a transportation medium of the additives by using existing water injection systems Water + Additives Injection 圧入井 well Reservoir 油層 栄養源の圧入 Water + Oil + Gas Production well 生産井 Residual Oil 微生物の機能性に応じた排油メカニズムと効果 Indigenous Microbes Oil degradation / Gas production Add additives Increase of the amount of recovered oil

7 Microbes Prokaryote (range in size from 10-5 to 10-6 m) 7 Spirochetes Proteobacteria Cyanobacteria Planctomyces Bacteroides Thermotoga Aquifex Bacteria Archaea Eucarya Gram- Positive bacteria Green filamentous Methanobacterium Methanococcus Thermococcus Thermoproteus Pyrodictium Entamoeba Methanosarcina Halophiles Slime molds Animals Fungi Plants Ciliates Flagellates Trichomonads Microsporidia Diplomonads Tree of life Life on Earth is divided into three primary domains Branch order and length are based on genetic sequencing Schlumberger, Oilfield Review, 2012

8 8 Indigenous microbial activity The increase of the amount of recovered oil Degradation Effects of EOR The decrease in oil viscosity etc. Additives accelerates the indigenous microbial activity Crude oil Organic acid H 2, CO 2 Acetate Methane gas Oil degrading microbes Organic matter degrading microbes Methane producing microbes Indigenous Bacteria and Archaea in reservoir

9 3. Plans 9

10 Plans Achieve 10% increment of oil recovery with MEOR (applying as tertiary operations after mature waterflooding) 10 Phase III Commercial (Overseas) Laboratory test Phase I Phase II Test & Demonstration (Japan s oil field) Demonstration (Overseas oil field) Sample from the Japan s oil field are used for Phase I laboratory test The objective of Phase I Determining the possibility of MEOR technology using laboratory experiments from the aspect of microbial technology.

11 11 Plan of Phase I Sampling, Microbial Characterization, Geochemical Characterization Acquire the microbial & water data Choose the candidate additives Investigation of Additives Narrow down what kind of additives Optimization of Additives, Core Flooding Experiments, Presumption of MEOR Effect Confirm the most effective additive condition at in-situ condition Confirm the recovery in laboratory Consider the potential increasing the recovery +10% OOIP in the field

12 4. Results 12

13 Microbial Characterization 13 More than 10 5 cells/ml microbes were detected as indigenous microbes. Oil degraders and methane producing microbes were confirmed. 16S rrna amplicon sequencing Microbial cell count (SYBR Green methods) cells/ml [ Bacteria (class) ] [ Archaea (genus) ]

14 Investigation of Additives 14 Based on the microbial and geochemical characterization, candidate additives were chosen. Microbial growth, gas generation and oil viscosity reduction were confirmed by incubation experiments using the candidate additives. Incubation experiments amended unamended

15 15 Acknowledgements We are grateful for the support by JOGMEC. Thank you for your attention.