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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 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 optimal choke size (optimal productivity: time vs volume
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
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