God Save The Queen!!!

tau kan itu judul apa? Itu judul national Anthem nya Britania Raya.

Bayangkan, satu negara se Britania raya, mendengungkan lagu ini hanya demi memohon kepada Tuhan untuk melindungi ratu mereka. Betapa berharganya ratu mereka.

Dan hari ini, gw berharap, ada ribuan orang menyanyikan itu lagu, tapi liriknya kira2 diganti "God Save Afif", gw butuh semacam support yang agak hiperbol untuk mendongkrak semangat gw yang bentar lagi kudu nemuin dua Doktor di kampus gw buat bimbingan, yaah, finally Draft Skripsi gw kelar juga.

kalo ga percaya, nih penampakannya

Udah hampir 4 bulan gw ngerjain nih skripsi, mungkin bisa dibilang antara hidup dan mati, lebai sih, emang gw nya suka lebai hahaha..
sebenere bisa cepet sih ngelarin nih Draft, gara2 beberapa hal aja yang ngebuat gw agak ngeper juga buat ngelarin nih Draft.

1. Project.
gw kebetulan kegabung dalam Full Scale Waterflood Plan Of Development Project salah satu perusahaan Minyak di Indonesia, tugas nya ngebayangin adanya perubahan atau pun dampak adanya injeksi pendesakan Air pada salah satu lapisan di Perusahaan tersebut menggunakan simulator, cukup menguras waktu, mental, tenaga, dan perasaan. Tapi membahagiakan kantong dompet. hahahaha...
Kira2 kerjaan gw kayak gini nih kalo di kantor.

ADUUHH!! maksudnya ini nih...itu sebelah meja gw. hhahah..

Yaah, itulah simulasi reservoir, menggunakan suatu tool bernama Reservoir Simulator, kita akan dapat memprediksikan suatu performance dari reservoir Minyak bumi. Reservoir adalah suatu barang yang tak bisa dilihat dengan mata telanjang, harus dimodelkan oleh geologist menggunakan soft ware, misalnya Petrel (Schlumberger Product) yang nantinya akan di export ke Reservoir Simulation Software seperti CMG ( yang gw kerjain) atau juga bisa pakai Eclipse (Schlumberger).

Simulasi reservoir merupakan salah satu metode modern dalam menentukan cadangan dari Reservoir. itulah kira2 gambaran dari simulasi.

2. Dosbing
Dosbing atau Dosen pembimbing itu dua orang yang hebat dalam reservoir, Dr. Ir. Deddy Kristanto, M.Sc. dan Dr. Ir. Yosaphat Sumantri, MT. kalo diibaratkan di game, gw lagi kena Combo meeen. (---.---)v
Dua dosen reservoir langsung turun tangan buat nanganin orang kayak gw. Padahal kalo boleh jujur, gw idiot di Reservoir, secara basic gw itu di Drilling. tapi ga tau kesambet ape, tiba2 Kompre ambil Reservoir, dan akhire TA reservoir juga.

kenapa gw gasuka ama reservoir? udah sering gw bahas disini, gw kena jackpot 3 kali dapet C di tekres (Teknik reservoir red.) gatau kenapa, apa gw nya yg bloon, atau dosennya yang kepinteren. gw selalu aja dapet C.

Hanya karena suatu materi yang bernama MATERIAL BALANCUK!
ga tau kenapa, selalu aja, 3 kali berturut turut, tiap UTS, dengan materi sampe volumetrik, gw lancar jaya, tapi abis UTS, pas UAS, gw MATI JAYA!!

Gw jadi mikir, betapa berdosanya Schilthuis sampe sampe dia nyiptain persamaan yang namane MATERIAL BALANCUK!!

Sebenere itu gampang kok, cuma hukum kesetimbangan volume, maksudnya, antara underground withdrawal itu sama dengan pengembangan volum gas, minyak, dan semua parameter didalamnya. gampangnya, kalo minyak keproduksi, faktor yang ngebuat minyak itu bisa naik ke permukaan itu nilainya sama. Cuma kayak gitu aja kok. tapi ga tau, betapa idiotnya gw ampe kayak gitu aja ga ngerti.

hadeeeh...
Dan sekarang tanggung jawab baru pun akhirnya muncul.
Gw ga peduli mau dihabisin, dimaki ama dua dobing gw itu, yang penting gw cepet kelar dan jadi MUHAMMAD AFIF IKHSANI, ST.

GOD SAVE THE PIG! eh, GOD SAVE ME!!

CBM in Indonesia? So why we are not trying for this?

While i am doing my final year project's report, and people demands who has asked me to write down about CBM, here i would like to write about this such of subject. Coal bed methane (CBM), one of the example from unconventional hydrocarbons which is started to take a role in energy sustainability in this world.

This figures show about the production process of CBM.


In the US, coalbed methane (CBM) production currently stands at 3.5 Bcfd, about 7% of national gas production. New emerging coal basins (Uinta, Raton, Powder River) have been brought on line while mature areas (San Juan, Warrior) have maintained production.

Over 15 Tcf of CBM reserves have been booked to date, requiring more than $4 billion of capital investment ($0.30/Mcf). CBM E&P is now being conducted outside the US in China, Australia, Poland, and several other countries. As coal producing country, Indonesia CBM resource can simply be identified but quality and deliverability have not been tested. It may have considerable potential as a new gas resource.

As a new alternative energy resources a sequential challenges will require serious, well planned, long-term efforts to ensure a success of CBM development. This campaign is designed for those looking for alternative energy business opportunity in Indonesia, exploration managers and technical experts to provide an early understanding of coalbed methane geology, production technology, regulatory requirement and potential market and economics.

Why Coal bed is unique?

Coal is a gas reservoir that responses predictably to a specific set of interactive physical properties (as other gas reservoirs). Coal is a self-sourcing reservoir, thereby fulfilling the requirement of Source rock, Reservoir rock and Trap.

Coalbeds are an excellent storehouse for natural gas. They can hold two to three times as much gas as a conventional sandstones reservoir at the same depth.

Challenge is locating areas of adequate permeability (several md or more ) in otherwise tight coal seams to produce this resource.
However, in general there is agreement that the world’s supply of conventional crude oil will peak between 2020 and 2030. Most experts do not consider he contribution of unconventional oil and gas of the kind discussed in this lecture, because it seems too speculative. However, it is reasonable to state that any assumption related to decline in oil production will result in increase in oil price is necessarily not correct as oil supply from conventional sources will be replaced by oil production from unconventional resources. This obervation implies that global peak oil production will probably be not achieved probably for another 50 years.

Due to small dimensions of the micropores, a large internal surface area exists within the coal matrix. When a methane molecule comes into contact with an internal surface, two storage mechanisms are possible. The first mechanism of entrapment occurs when the gas molecule penetrates the surface and resides within the molecular lattice of the coal. This is an absorption process. the second mechanism occurs when the gas molecule adheres to the surface. This is an adsorption process. Both storage mechanisms are theorized to occur in coal.

The adsorption process can be classified by the forces which cause the gas molecule to adhere to the surface. If these forces are chemical in nature, such as strong chemical bonding, then the process is chemisorption process. If, however, the forces are physical, such as electrostaic forces or Van der Waal’s forces, the process is a physical adsorption process. The major portion of the gas stored in coal exists as a physically adsorbed, molecular monolayer.

Theoretically, the physical adsorption process is reversible. In coal, hwoever, a small degree of absorption and chemisorption occurs along with physical adsorption. Consequently, a hysteresis effect is often observed between experimentally determined adsorption and desorption isotherms.

So why CBM is Potentially Important to Indonesia?

CBM is Completely new undeveloped natural gas resources (but also untested)
Large resource potential given Indonesia’s sizeable coal base Location onshore may be more favorable for market compared with LNG of Eastern Indonesia. It is potential for advantageous “Global Warming” credits should market in tradable emission options develop

Indonesia, for this ESDM has a target to explore this mentioning area.
Formations: Eocene Tanjung
Oligo-Miocene Talang Akar
Mio-Pliocene Muara Enim
Other equivalents

Major Basins: S & C Sumatra
S Kalimantan (Barito)
E Kalimantan (Kutei, Berau, Tarakan
Plus several smaller basins.


Why we are trying to use CBM as a new alternative energy?
1. Oil & Gas Prices Trend
2. Horizontal / Radial drilling technology courses CBM exploitation cheaper and more certain
3. EOR Technology can be used to exploit CBM
(Nitrogen Injection can increase Methane recovery 50 %)
4. Processing Technology allows “Insitu Gasification”
5. Cryogenic Method (LNG) in gas transportation will solve
high cost in high compression of CBM as a consequence of Low Producing Pressure

In Indonesia itself, there are several companies which are starting to develop this kind of energy. Pertamina, Medco E&P, Vico Indonesia, Ephindo, and etc. have been starting to do this development project of CBM.

So why we are not trying this? to be develop in Indonesia :)

Source : Mr. Kartono Sani and Mr. Turgay Ertekin

Kenapa harus ditulis?

Yogyakarta, 15 Juli 2011 12.35 AM.

Iseng nulis dikala kepala lagi cenat cenutnya. dan ini adalah posting ketiga ku setelah kemaren kemaren nya selalu mandeg buat nulis, berhenti di bait pertama.

hari ini mau nulis agak serius, mengenai hidup saya, ga ada lucu2an karena lagi capek dan ga mood buat ngelucu, dan bukan karena saya punya muka tampang badut.

oke, kita ngomong serius.

gajadi deh, pada ga niat buat baca kayake, ngantuk. tidur yaaa. :p

When i touched the economic limit

Syubidubidu syalalala...

Nulis lagi ga ada kerjaan, mau belajar tapi males, benar2 penyakit utama para anak muda jaman reformasi kayak gini itu ya males. Gimana mau jadi negara maju, dikit dikit males. Inilah gambaran kecil dari besarnya bangsa Indonesia. Besar karena gajelas mahasiswanya, isinya cuma twitting, singing, facebooking, ngising..hahaha..

Judulnya agak gak oke, tapi lumayan eye catching, "When i touched the economic limit". Kalo secara harafiah, pasti semua ngerti maksudnya. Economic limit itu kan ya batas ekonomiss, kalo di dunia Eksplorasi dan produksi minyak bumi, economic limit berarti batas ekonomis diproduksikan minyak bumi, mendekati suspend, dan nantinya kalo memang benar benar tidak ekonomis, akan dapat dikategorikan sebagai abandon atau ditinggalkan.

Lapangan Migas di Indonesia termasuk lapangan tua, hampir berumur setara dengan Kakek saya yang sudah meninggal, bahkan lapangan yang dimiliki oleh perusahaan pelat merah di Indonesia, sumur sumurnya di eksplorasi sejak tahun 1938, bayangin data itu muncul dari tahun 1938, mulai di bor kira-kira 7 tahun sebelum Indonesia merdeka. Ajegileeeeeee...

Jujur, dulu gw bukan orang yang terlalu peduli ama yang namane data, tapi gara2 sempet kena tugas splitting data di kantor, gw jadi mikir, betapa mahal dan berharganya data ini, penuh perjuangan abis2an bisa mertahanin data yang berusia hampir 80 tahunan, walau pun ada beberapa data rekonstruksi, tapi tetep oke juga.

Naah, bayangin dari tahun 1938, sampe detik ini, kalo diitung secara matematis, itu udah berumur 73 tahun. Dan lapangan tersebut masih berproduksi sampai detik ini. kalau ditarik decline, dan dianalisa pasti semua hasile hampir sama, dan dapat ditarik kesimpulan, sumur itu tidak akan bertambah Recovery factornya walau dicoba infill drilling ataupun workover.

Salah satu cara yang bisa dipakai untuk mengubah decline dan menaikkan produksi dari economic limit adalah dengan mengganti metode produksi, misalnya Secondary recovery dengan waterflood, atau tertiary recovery dengan EOR. Masalahnya ekonomis ga lapangan tersebut diubah metode produksinya dengan secondary atau bahkan tertiary recovery?

That's the big question that must be answered by the all reservoir engineers in Indonesia.

"This is Enhance Oil Recovery era" itulah yang disampaikan bapak Rinaldi Imran, Manager EOR dari Samudra Energy. Sudah saatnya kita memasuki era secondary dan tertiary Recovery.

Perusahaan pelat merah sudah memulainya, dan hasilnya? sangat memuaskan, walau masih menggunakan secondary recovery dengan waterflood, mereka berhasil menaikkan produksi minyak bumi di Indonesia dengan drastis. PHE ONWJ (22.000 vs 32.000 bopd), Tarakan Kaltim (4.300 vs 5.400 bopd ), dan Limau Sumsel (6.000 vs 12.000 bopd.
Itulah hasil nyata, tapi kembali lagi, semua harus didasarkan pada faktor keekonomian, ekonomis tidak bila kita melakukan semua itu.

Sehebat apapun reservoir engineer, bisa menaikkan ratusan barel minyak, kalau gak ekonomis, mau gimana? :p mati aje lu..

gambaran waterflood tuh kayak gini,yang pada mau belajar nih waterflood, saya punya kenalan ahli waterflood, sahabat ane, orang duri, dy belum lulus tapi udah selevel S3 kalo waterflood. clue nya orange item, tinggi..hahahaha..tapi yakiin, tokceer ilmunyaa. Just contact me ;) tak sambungin ke orange.
terus apa korelasinya? ama judul malam ini?

4 bulan lalu kayake, gw ngalamin decline yang bener2 ekstrem, kalo boleh dikata, bener2 kena decline rate minimum, dengan B=0. Artinya, EKSPONENSIAL!!!!

Benar2 melewati batas economic limit, mau dicoba nglakuin re-opening, ternyata dapete mengecewakan, aiiiir yang didapaaaaat T.T udah kena zona aquifer.

Dicoba waterflood, ternyata ga ekonomis, yaah, emang ga jodoh kali buat ngembangin tuh lapangan ampe beranak pinak keuntungannya. Hahahaha..

Like i said before, mau sehebat apapun mainan simulasi buat ngembangin tuh lapangan, kalo gak ekonomis, ya bakalan habiiissssssss...useless..

terus kalo gitu salah sapa? salah guweee? salaaah temen temeen guweee??? Wakakakakaka...