Perks of being a Field Engineer :
good compensation benefit travel around the world.
My “green hat” job or people usually say as probation period as a field engineer was on a geothermal drilling well at North Sulawesi, Indonesia. It is exactly at Tomohon , the city of flower in Minahasa region. Tomohon is notoriously known for their traditional market that trade bats, cats, dogs, and rats meat. Seems like they hate rodents so much, they almost eat everything. Most of North Minahasa people are non-moslem so they also eat pork a lot. There is a annual flower festival in Tomohon which attracts many foreign tourists. Tomohon also famous of their native girls with their bright skin, slim, and westernized looks which are the favourable characteristics in Indonesia. Aside from girls, flower, cats and bats meat, and liquor (cap tikus), Tomohon is rich of geothermal potential.
Lahendong Geothermal Power Plant
Lahendong Power Plant, located in South Tomohon is one of the biggest electricity supply in North Sulawesi. The capacity of each phase is around 20 MW. Now the project has almost completed the third to achieve 60 MW. Lahendong area is suspected to have 200 MW of potential reserve. Yet the well development still run right now, only with steady effort. They only contracted one rig to did the well drilling for reserve development. I suspected the commitment of Pertamina Geothermal Energy (State owned) is still halted due to high cost of geothermal drilling costs. However on 2014 – early 2015, there were one drilling rig doing activites on Tompasso area for exploration. The Tompasso area still has not utilized right now for their steam.
Works at Kasuratan and Tondangow Districts
I had the opportunity to drill two wells each in Kasuratan district (Area 3) and Tondangow district (Area 13). Apexindo Rig #4 was contracted to drill there, they are the best crew I’ve known for drilling geothermal well. To complete one well, they only needed around 2 months. Compared to Sarulla geothermal well drilling rig, they could took up to 3-4 months to complete one well.
Geothermal well usually drilled in four hole size, 26″ – 17 1/2″ – 12 1/4″ – 9 7/8″ subsequently. That is for big hole production well, for re-injection well it usually use 12 /4″ and 8 1/2″. However the size should differs depend on drilling engineering calculation. MWD Engineers usually works from early size until second last size. On early size when the well direction is still vertical, our tools make sure the collision issue to nearby well is avoided. On kick-off section, we work full-time while building and turning the motor to desired path. On tangent section we still work to give correction for missing path. On last section we do not usually take MWD on BHA due to very high temperature. MWD tool has temperature limit around 150 degrees of Celcius. On last section, the temperature with mud circulation mode could reach 170 degrees of Celcius.
A list of popular tourists destination in Tomohon area:
- Bukit Kasih – religion tourist place for Christians.
- Tomohon Traditional Market – the place that sold bats and cats meat, and other traditional groceries. Only appears on early morning if you want to see the exotic meat.
- Tondano Lake – one of the biggest lake in Indonesia, not far from Tomohon city.
- Ragey Restaurant – pork satay restaurant, also serve Paniki (made from bats meat).
- Flower gardent – looks very good on festival time around August every year.
- Tomohon Night Market – flea market that sold traditional and hawker food.
- Tompasso – famous for its peanuts.
It should be more place that is interesting to visit, I’ve only known about the seven of them for two times visiting Tomohon. Plus, I only had time to wander when drilling is not commenced which means only on casing point break I can go around Tomohon.
It’s all wrap about my review for Tomohon City after three months total of living there. Hope you find it interesting!
ex-MWD crew of Lahendong Well Drilling