Posted in casing

casing trouble


CASING TROUBLE

Finaly drilling the 17-1/2” hole section has concluded after several difficulties with tight hole and lost circulation zone. Typical drilling on carbonate reefs  in Offshore West Papua.

Next operation was running 13-3/8” casing to isolate the trouble thief zone.

Casing was run after encountering some difficulties of tight zone. Having cemented the Jackup drilling crews do some Blow Out Prevention work on spider web.

Unfortunately the triptank discharge pump also had some troubles to keep filling up the fluid inside the isolated-casing-cemented- hole. But no worries too much, the well are closed now – term for no communication between formation and rig. Once in every hours drillers are toping up the well by pumping the mud from the active pits.

But the mudlogger seen something not quite right. The level on the active pit was going down every time fillingup operation was performed. Simple words – the well taking mud.  As his responsibility he talk to driller about this anomaly. The response was : check your pit sensor whether is working or not.  Toolpusher pay a visit to logger shack – his gesture simply saying “stupid sample catcher – don’t you realized the well are now got thick steel wall and isolated by best cementing material.”

After the Triptank pump back to services,  the fact are there dueto well taking another extra mud.

This time poor lad coming to see the Company Man on duty.

Flowcheck  was made. Suspect the casing was collapsed.

To confirm, an impression block was brought to rigfloor and ran in the hole with drillcollar and drill pipe. Tight section inside casing tagged around 100meter above casing shoe. On surface the impression showing that casing was parted and the lips was sit  in the centre of the hole. Obviously there is an open section that channeling between wellbore to the thieves carbonate formation.

A sidetrack was made and next operation running smoothly.

But no one even bother to thanks to poor mudlogger for his spotting the problems.  He just happy become a hero – for himself. Moral of story. Doing a good job as mudlogger just like wetting on your pant. Only you feel the warm.

Author:

Hi.. Mimbar Saputro.. friend call me Mimbar. Live in Jakarta and Bekasi, Indonesia. Above 58 years old, love to write anything, but still afraid write in English. Retired real mudlogger, "promised" Directional Driller coordinator, "promised" mudlogger's Director. Since 6 Januari 2012 - been third time retired. My actual job is drilling rig "mudlogger" - a person who collect information based on drilling shit or cuttings. I like to write about drilling rig, but ones must remember the Oil industry is Tighthole Policy, therefore you cannot tell about your rig too much. After twice got "golden shake hand" another word for "early termination" - they said I am too old for such job, I am working in West Australia, the country where the older is the better. I love working here because the payment good, people nice, food superb. And they did not even bother how old am I as long as I can work, in good shape.Thats all. Hello: Nama saya Mimbar Bambang Seputro, tetapi di Pasport kadung ditulis SAPUTRO. Waktu kecil dipanggil PekBang. Kelahiran Banten Jawa Barat. Sebetulnya cita-cita sih menulis kehidupan saya pribadi sebab setiap orang pasti memiliki riwayat hidup yang bisa dibagikan kepada orang lain. Sayangnya banyak dari kita meninggalkan dunia bak sebuah orkestra indah yang belum pernah diputar karena tidak berani mencoba menulis kehidupannya. Bahkan banyak orang kalau namanya kebetulan mirip dan tersenggol - marahnya bukan main. Padahal apakah cerita kehidupan harus selalu glorius, penuh kemenangan. Banyak kan kita membaca otobiografi seperti sekolah pinter, anak Wedana, anak Orang kaya, Ganteng, ndak pernah salah sementara sayapun juga manusia, punya kelemahan. Saya bekerja di sebuah konsultan perminyakan di Australia. Namanya memang keren "MudLogger" tetapi pekerjaannya mengayak lumpur pengeboran. Setelah lumpur dibuang maka batuan yang sudah menjadi serpih ini kami tata teratur dalam baki kecil dn dilihat dibawah mikroskop. Sisa batuan lainnya kami bungkus dalam kain mori. Lalu kami jemur dibawah terik matahari. Rata-rata berat satu bungkus harus 2 kilogram. Kalau contoh serpih batuan ini sudah kering, kami bungkus dalam kantong plastik seberat 200gram. Biasanya satu set terdiri dari 4 kantong plastik. Dan kantong-kantong ini kami kirim ke pelanggan kami untuk dilakukan pemeriksaan geokimia dan analisa batuan lebih terperinci.