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BASIC WELL INTERVENTION IN OIL & GAS INDUSTRY
Okee let’s start and be back to the Main Topic : BASIC WELL INTERVENTION IN OIL & GAS INDUSTRY
What’s Well Intervention??
- Well = wellbore (hole which is created after Drilling RIG Activity)
- Intervention : Do something in Active Wellbore (Producing Well) & Also “dormant””/non-active well/abandon well which is still potentially economic in the future
- Well = sumur bor (lubang yang dihasilkan setelah aktivitas pengeboran)
- Intervention : “mengobok-obok”, me-maintain, meng-intervensi sumur yang masih berproduksi maupun sumur yang sudah lama di-tinggal tapi kemudian hari masih berpotensi bisa “menghasilkan”
What Unit Business Related??
- Slickline Services (1)
- Well Test Unit Services (2)
- Coiled Tubing Unit Service (3)
- E-Line Services (4)
What Qualification before doing “Well Intervention”???
(Syarat yang harus dipenuhi sebelum melakukan “Well Intervention”???)1Risk Assessment
Risk Assessment/Kaji Resiko
- Historical of Wellbore/Wellsite(Sejarah dari sumur bor & wilayah sekitar)
- JSA (Job Safety Analysis), L2RA (Level Two Risk Assessment), Work Permit (Analisis Keselamatan Kerja, Ijin Kerja)
- Job Program/Program Kerja
- Wellbore Diagram/Diagram Sumur (gambar penampang completion sumur)
2Human
Human/manusia
- Knowledge/Pengetahuan (Training, Book, Discussion, Website, V-log)
- Skills/Kemampuan (Best Practice in the Field/Kerja Praktek Lapangan, Experience/Pengalaman, Certified/Terakui+tersertifikasi)
- Track record, MCU (medical history), Behavior/Attitude
3Asset Unit
- Certificate,
- Callibration, Verification, Inspection (CVI)
- Communication Tools/Peralatan Komunikasi (Handy Talky, HandPhone, Computer, Internet, etc)
Slickline Services
- Mengukur wellbore restriction (Use Tubing Gauge Cutter)
- Mengukur Tekanan & Suhu bawah permukaan (EMR/Amerada Gauge)
- Buka– Tutup SSD (Sliding Sleeve Door/Sliding Side Door)
- Men-set (memasang/meletakkan) & Retrieve (mengambil, mencabut) Peralatan bawah permukaan
- PX Plug & Prong, Kobe Plug/Retrieveable Bridge Plug
- Tubing Stop (F Collar Stop, AD2 Tubing Stop, AA Tubing Stop, etc)
- Memory Gauge + Hanger
- Jet Pump
- Gas Lift Pack Off (GLPO)
- Gas Lift Valve-Orifice-Dummy on Side Pocket Mandrell (SPM)
- Down Hole Safety Valve (wireline type)
- Menentukan Kemungkinan letak kebocoran tubing
- Tubing perforasi (Mekanikal)
- MPLT (memory production logging tool)
- Swabbing/ Menimba/ Mengambil Cairan fluida sumur untuk mengurangi tekanan hidrostatik sumur (pilihan vs waktu vs ke-efektifan) /
- Bailing/Menimba/Mengambil Material Halus (pasir, debris), pembersihan scale/kerak yg lunak pada dinding tubing
- Fishing
Well Test Unit Services
Measure productivity wellbore fluid/liquid/gas
- Gas rate
- Oil rate
- Condensate rate
- Water rate
Determine saturation wellbore fluid/liquid/gas
Coiled Tubing Unit Services
- Acidizing (peng-asaman)& Stimulation (stimulasi)
- Fracturing (perekahan formasi batuan/reservoir)
- Nitrogen (N2) Unloading, tujuan: untuk mengurangi tekanan hidrostatik dengan cara “mengambil/mengangkat”fluida
- Logging (untuk di sumur miring & nyaris horizontal/datar)
- Buka– Tutup SSD
- Mengukur Tekanan & Suhu bawah permukaan
- Cementing (Remedial)/ Semen Ulang
- Drilling (optional)/ Pengeboran
- Men-Set (memasang)& Mengambil Peralatan Bawah Permukaan jika Slickline tidak mampu
Electric Line Unit Services
- Logging (gamma ray, CCL, neutron, density, sonic, etc)---ReaL Time
- Measure Bottom Hole Pressure & Temp (SRO Gauge), SRO : Surface Read Out---ReaL Time
- TCP (Tubing Conveyed Perforation)
- Wireline Perforation
- Tubing Cutter (Electrical-Mechanical)
- Depth Correlation