BANDUNG, speitbsc.org – Collaborated with IATMI SM ITB and HMTM ‘PATRA’ ITB, SPE ITB SC conducted a technical guest lecture themed “Managing Tangguh Big Gas Wells” was held on Friday (03/11/17) 1-3PM at Total Handil Room, Petroleum Engineering Building. Mr. Muhammad Andromedae (BP Production Engineer) as the speaker of this guest lecture. He is an alumnus of Petroleum Engineering Major batch 2001.
Tangguh is a Liquefied Natural Gas (LNG) greenfield development located in Bintuni Bay, Papua Barat, Indonesia. There are fourteen wells designed to produce up to 240 MMcf/D per well. Sand and other solids from the reservoir are managed with a comprehensive, holistic strategy to provide operational assurance from the sand-face to the processing facility.
The Tangguh gas wells are identically completed in the Roabiba formation with seven inch monobore cased-hole perforated completions. Each well flowline is equipped with a dedicated non-intrusive acoustic sand detector and wet gas flowmeter. Well bottomhole pressures are monitored continuously with permanent downhole pressure sensors.
Moreover, extensive log and core analyses suggested that Roabiba formation competency was sufficient to not require downhole sand control. Similarly, surface processing facilities and flowlines were constructed with a design basis of very low levels of sand and other solids production. Produced liquid yields are low and formation water is not expected until the latter years of field depletion.
An integrated sand management strategy has been implemented since pre-startup with an underlying theme of formation sand prevention. Following completion, all wells were methodically cleaned up to remove potential formation drilling damage and other completion related debris. Wells were initially cleaned up to 100 MMcf/D with rig testing equipment and later ramped up to their maximum allowable rate to the permanent production facility.
Measured formation sand production is negligible to date. Real-time well performance is monitored continuously and managed with rigorous constraints to minimize potential sand and solids production. Detection of acoustic signals over a predetermined limit are investigated and followed up with further action as necessary.