Search Repository STTMIGAS Balikpapan

Berdasarkan data yang diberikan sumur telah mengalami kerusakan
formasi, penyebab dari kerusakan formasi tersebut karena adanya partikel lost
circulation material CaCO3 yang digunakan untuk menanggulangi partial loss
pada saat drilling awal sumur, selain itu penggunaan CaCl2 dengan mud weight
sebesar 11.6 ppg untuk menutup zona yang menghasilkan gas juga turut
menambah terhambatnya permeabilitas sumur. Akibat dari adanya penggunaan
bahan tersebut menyebabkan sumur secara rutin dalam 1 3 bulan harus di
stimulasi dengan acidizing, work over hingga penutupan sumur untuk melakukan
pressure build up agar produksi kembali meningkat.
Selama Sumur PINK diproduksikan, terdapat 6 zona yang telah di
perforasi, dimana dari keenam zona terdapat 3 zona yang ditutup dan 3 zona yang
lain masih dapat menghasilkan recovery oil yang ekonomis yang di analisa
melalui hasil swabbing job dan production history Sumur PINK.
Adanya kegagalan pemasangan tools RBP menyebabkan seluruh zona
yang berproduksi harus ditutup karena akan ada pengerjaan fishing. Setelah
pengerjaan fishing sumur akan kembali dibuka karena masih berpotensi yang
dilihat dari hasil perhitungan decline bahwa penurunan produksi sumur perhari
sebesar 1.5% dan dari decline tersebut kemudian ditarik untuk forecasting sumur
dimana sumur masih dapat berproduksi selama 378 hari dengan EUR sebesar 1.8
MSTB jika tidak dilakukan upaya stimulasi atau work over.

Based on the data provided the well has suffered formation damage, cause
of the formation damage was due to the lost circulation of CaCO3 material
particles which were used to overcome partial loss during the initial drilling of
the well, In addition, the use of CaCl2 with a mud weight of 11.6 ppg to cover the
gas-producing zone also adds to the inhibition of well permeability. As a result
of the use of these materials, the wells routinely within 1-3 months must be
stimulated with acidizing, work over until the closure of the well to carry out a
pressure build up so that production will increase again.
During the production of the PINK Well, there are 6 zones that have been
perforated, where from the six zones, 3 zones are closed and the other 3 zones
can still produce economic oil recovery which is analyzed through the results of
swabbing jobs and the production history of Sumur PINK.
The failure to install RBP tools causes all production zones to be closed
because there will be fishing work. After working on the fishing well, it will be
opened again because it is still potential as seen from the results of the decline in
the calculation of the decline in the production of wells per day by 1.5% and from
the decline is then drawn to forecast wells where the wells can still produce for
378 days with EUR of 1.8 MSTB if efforts are not made stimulation or work
over