Kelasa merupakan pengembangan sumber daya gas di kawasan Kalimantan Timur.
Substansi proyeknya adalah membawa cadangan gas dari reservoir menuju produksi melalui development wells, fasilitas produksi, pengolahan gas dan sistem pipeline yang terhubung dengan fasilitas penerima.
Konfigurasi pengembangan akan sangat dipengaruhi oleh posisi reservoir terhadap infrastruktur migas yang telah tersedia di Kalimantan Timur.
Secara umum rantai fasilitasnya adalah:
GAS RESERVOIR TO DEVELOPMENT WELLS TO WELLHEAD / PRODUCTION SYSTEM TO GATHERING SYSTEM TO GAS PROCESSING TO COMPRESSION - IF REQUIRED TO METERING TO EXPORT PIPELINE TO EXISTING / NEW RECEIVING FACILITY TO DOMESTIC GAS SYSTEM
RESERVOIR DEVELOPMENT
Tahap awal pengembangan adalah memastikan reservoir model cukup matang untuk menentukan jumlah dan lokasi development wells.
Data yang digunakan meliputi: - Seismic interpretation - Well log - Formation pressure - Fluid sampling - Core data - Well testing - PVT analysis - Reservoir modelling
Parameter utama yang dianalisis: - Reservoir geometry - Porosity - Permeability - Net pay - Gas saturation - Reservoir pressure - Temperature - Fluid composition - Reservoir connectivity
Data tersebut digunakan untuk menyusun production profile dan menentukan konfigurasi fasilitas produksi.
DEVELOPMENT WELLS
Cadangan gas diproduksikan melalui development wells.
Jumlah development wells ditentukan berdasarkan reservoir model, target produksi dan deliverability masing-masing sumur.
WELL COMPLETION
Setelah mencapai reservoir, sumur dilengkapi dengan production completion.
Peralatan dapat mencakup: - Production tubing - Production packer - Downhole safety valve - Wellhead - Christmas tree - Pressure monitoring - Flow control - Completion accessories
Completion dirancang berdasarkan reservoir pressure, temperature, gas composition dan target production rate.
PRODUCTION SYSTEM
Gas dari development wells kemudian masuk ke production gathering system.
Konfigurasi dapat berupa:
DEVELOPMENT WELLS TO WELLHEAD TO FLOWLINE TO PRODUCTION MANIFOLD TO PROCESSING FACILITY
Equipment utama dapat mencakup: - Wellhead - Christmas tree - Production manifold - Flowline - Piping - Valves - Metering - Chemical injection - Pressure control - Safety system
OFFSHORE / NEARSHORE CONFIGURATION
Apabila sumur berada offshore atau nearshore, fasilitas dapat menggunakan wellhead platform maupun subsea production system sesuai kedalaman air dan konfigurasi lapangan.
Salah satu konfigurasi yang dapat dievaluasi:
SUBSEA / OFFSHORE WELLS TO FLOWLINE TO PRODUCTION PLATFORM TO GAS PROCESSING TO EXPORT PIPELINE
Alternatif lainnya:
SUBSEA WELLS TO SUBSEA MANIFOLD TO FLOWLINE TO EXISTING / REGIONAL PROCESSING FACILITY
Konfigurasi final harus mengikuti hasil engineering dan lokasi reservoir sebenarnya.
GAS SEPARATION
Fluida dari reservoir tidak selalu berupa dry gas.
Wellstream dapat mengandung: GAS + CONDENSATE + PRODUCED WATER
Karena itu fasilitas produksi membutuhkan separation system.
Rangkaian prosesnya:
WELLSTREAM TO INLET SEPARATOR
GAS TO GAS TREATMENT CONDENSATE TO CONDENSATE HANDLING PRODUCED WATER TO WATER TREATMENT
GAS PROCESSING
Gas harus memenuhi specification sebelum masuk ke export pipeline.
Processing facilities dapat mencakup: - Inlet separation - Gas treatment - Gas dehydration - Condensate handling - Produced water treatment - Chemical injection - Gas metering - Pressure control
Jika komposisi gas membutuhkan treatment tambahan, fasilitas disesuaikan dengan kandungan CO2, water, hydrocarbon liquids dan impurities lainnya.
GAS COMPRESSION
Kebutuhan compression ditentukan oleh reservoir pressure dan tekanan jaringan penerima.
Apabila diperlukan:
PROCESSED GAS TO SUCTION SCRUBBER TO GAS COMPRESSOR TO AFTERCOOLER TO DISCHARGE SEPARATOR TO METERING TO EXPORT PIPELINE
Compression package dapat terdiri atas: - Gas compressor - Compressor driver - Scrubber - Gas cooler - Pressure vessel - Lubrication system - Piping - Valves - Anti-surge control - Condition monitoring
FLOWLINE & PIPELINE
Flowline membawa produksi dari sumur menuju processing facilities.
Export pipeline membawa gas yang telah diproses menuju receiving facility.
Kalimantan Timur telah memiliki sistem produksi, pengolahan dan transportasi gas yang berkembang selama puluhan tahun.
Karena itu concept selection Kelasa perlu mempertimbangkan kemungkinan integrasi dengan regional gas infrastructure.
Secara umum terdapat dua konfigurasi.
OPTION 1 - INTEGRATION / TIE-BACK
KELASA WELLS TO FLOWLINE TO EXISTING PROCESSING FACILITY TO EXISTING GAS NETWORK
OPTION 2 - DEDICATED DEVELOPMENT
KELASA WELLS TO NEW PRODUCTION FACILITY TO GAS PROCESSING TO COMPRESSION TO NEW EXPORT PIPELINE TO REGIONAL GAS NETWORK
Pemilihan konfigurasi dipengaruhi oleh: - Recoverable gas resources - Production rate - Distance to existing facilities - Available processing capacity - Pipeline distance - Reservoir pressure - Gas composition - Project economics
GAS RECEIVING FACILITY
Pada sisi penerima, export gas harus masuk ke receiving system sebelum diteruskan ke jaringan pengguna.
Fasilitas dapat mencakup: - Pipeline receiving station - Pig receiver - Pressure control - Gas metering - Filtration - Gas heating if required - Emergency shutdown - Gas quality monitoring
Dari receiving facility, gas dapat diteruskan ke regional gas network atau fasilitas pemrosesan berikutnya.
POTENSI GAS UTILIZATION
Setelah masuk ke jaringan regional, gas dapat digunakan untuk: - Power generation - Industrial fuel - Petrochemical feedstock - Fertilizer industry - City / regional gas supply - LNG infrastructure where technically applicable
Konfigurasi pemanfaatan akhir bergantung pada gas sales arrangement dan konektivitas jaringan.
ELECTRICAL & INSTRUMENTATION
Production dan processing facilities membutuhkan: - Power generation / supply - Transformer - Switchgear - MCC - Electrical cable - Instrumentation - Flow meter - Pressure transmitter - Temperature transmitter - Level transmitter - DCS / PLC - SIS - Emergency shutdown - Fire & gas detection - Communication system
MARINE FACILITIES
Apabila pengembangan menggunakan offshore facilities, pekerjaan marine dapat mencakup: - Offshore construction vessel - Supply vessel - Pipelay vessel - ROV - Diving - Heavy lifting - Platform installation - Pipeline installation - Hook-up - Marine logistics
CIVIL & STRUCTURAL
Untuk fasilitas darat maupun receiving facility, pekerjaan dapat meliputi: - Site preparation - Equipment foundation - Structural steel - Pipe rack - Control building - Utility facilities - Access road - Drainage - Pipeline landfall facilities
RESERVOIR EVALUATION TO APPRAISAL TO RESERVOIR MODELLING TO PRODUCTION PROFILE TO CONCEPT SELECT TO PRE-FEED TO FEED TO DEVELOPMENT APPROVAL / FID TO DETAILED ENGINEERING TO PROCUREMENT TO DEVELOPMENT DRILLING TO FACILITY FABRICATION / CONSTRUCTION TO PIPELINE INSTALLATION TO HOOK-UP TO COMMISSIONING TO FIRST GAS TO PRODUCTION RAMP-UP
PROJECT PROFILE
FIELD / PROSPECT: Kelasa
AREA: Kalimantan Timur
HYDROCARBON: Natural gas
PROJECT CHARACTER: Gas field development
MAIN DEVELOPMENT ELEMENTS: Development wells Production gathering Gas processing Compression where required Export pipeline Receiving facilities
DEVELOPMENT CONFIGURATION: Integration with existing regional infrastructure or dedicated production facilities, subject to final engineering and commercial development plan.
PROJECT UPDATE SUMMARY
KELASA GAS DEVELOPMENT - KALIMANTAN TIMUR
Rangkaian pengembangan:
GAS RESERVOIR TO DEVELOPMENT WELLS TO WELL COMPLETION TO PRODUCTION GATHERING TO GAS SEPARATION TO GAS PROCESSING TO COMPRESSION, IF REQUIRED TO METERING TO EXPORT PIPELINE TO REGIONAL GAS INFRASTRUCTURE
Komponen proyek mencakup drilling, well completion, production facilities, gas processing, compression, flowline, export pipeline, electrical & instrumentation serta receiving facilities.
Konfigurasi final Kelasa ditentukan berdasarkan hasil reservoir modelling, lokasi lapangan, production profile serta kemampuan integrasi dengan existing gas infrastructure di Kalimantan Timur.
TENDER INDONESIA PROJECT UPDATE RESERVOIR - WELLS - PRODUCTION - PROCESSING - COMPRESSION - PIPELINE
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