Dear Pak Edison, Bersama ini saya tuliskan kembali AAPG 2012 Bali abstract paper dari Qi Li et all yang berjudul:
Advances in Characterization of Fractured Shale Reservoir Almost all fractured shale reservoirs are distributed in source rocks which are mainly composed of mudstone and shale, abundant in organic matter, calcareous and siliceous minerals. Compared with sandstone and Carbonates reservoir, Shale reservoir with strong palsticity has common and specificify on fractures type and origin, identification method, parameter estimation, and distribution prediction. The shale reservoir fractures can de-classified into two groups of fracture according to their origin, structural and non structural fracture. Structural fracture, including high-angle shear fracture, tensile and shear fracture and low-angle slip fracture, belongs to ductile shear fracture. Non structural fracture fracture in shale, more developed than aother type of lithology, such as shrinkage fractures, overpresssured fracture and weathered fractured fracture, resulted from diagenesis, drying crack, overpressure, mineral phase transformation, recristallization, and pressure solution. The shale reservoir was almost formed in lacustrine lamellar marl in the deep lake environment. The endogenetic action for forming and growing mudstone fractures includes high content of organic carbon, moderate mixing ratio of formations and burial depth, predominant formation combination. The ectogenetic action for forming mudstone reservoir is the special structural environment. The structural fracture and hydrocarbon generation fracture are the main space for oil accumulation and the percolation channel for mudstone reservoir. The disappeared edge, intersection zone and outside zone of faults are the growing areas for mudstone reservoir. Then it is summarized the methods of fracture identification parameter estimation, fracture reservoir distribution prediction using geological seismic, drilling and logging and structural stress and then propose current problems and trend of study on shale fracture reservoir. Qi Li attended the School of Marine Sciences, China University of Geosciences, Beijing, Chuina and earned a Bachelor's degree in Geology in 1992 from the Chengdu College of Geology. He obtained his doctorate in 1999 from this same institution, majoring in Sedimentology. He is Assocaiate Professor at China University of Geosxcience. Mudah-mudahan berguna Salam Anggoro On 2/7/12, [email protected] <[email protected]> wrote: > > Powered by Telkomsel BlackBerry® > > -----Original Message----- > From: Anggoro Dradjat <[email protected]> > Date: Fri, 3 Feb 2012 09:17:15 > To: <[email protected]> > Reply-To: <[email protected]> > Subject: Re: [iagi-net-l] Secondary Porosity dan Sw calculation di shale > gas > > Dear Pak Edison, > > Untuk referensinya bisa diambil dari internet ketik rock strength, > shale rock stregth atau Rock strength Horsrud (2001) > Dapat juga diambil dari textbook Engineering Geology semisal buku" > Engeineering Geology of Uderground Rock" karangan Suping Peng dapat > juga diunduh dari email walaupun sebahagian atau juga bisa dari > laporan geomechanics buat drilling. > > Saya krimkan gambar dan formula dari rock strength untuk shale dengan > menggunakan persamaan Horsrud, disisni kita bisa menggunakan persamaan > horsrud (2001) seperti kita menggunakan kaca pembesar, log dari rock > strength yang kita buat dari sonic akan menunjukan resolusi yang lebih > tinggi dan tentunya juga punya magna fisik. > > Dengan data yang terbatas maka kita bisa memanfaatkan data drilling yaitu: > 1. Drilling rate penetration (ROP), kecepatan laju putaran semasa drilling. > 2. Chromatograph gas. > > Ada baiknya sebelum mengerjakan kita buat hypothesa terlebih dulu: > " Low rock strength in shale create high ROP and having more gas recorded" > > Yang perlu dilakukan adalah: > 1. Buat well display dari kedua logs dan gas plotting diatas > 2. Buat Cross plot untuk rock strength vs ROP > > Check hypotesanay benar apa ngak? apa sebabnya ?. > > Selanjutnya cek apakah feassible apa tidak, kalau tidak stop, kalau ya > bisa diteruslkan; kalau sudah ada hasil beritahu saya untuk share > pengetahuan. > > > > Salam > Anggoro > > > > > > On 2/2/12, edison <[email protected]> wrote: >> Terima kasih untuk respon yg sangat baik dari Bapak2 sekalian.. >> >> Kondisi yang saya hadapi adalah area dgn cakupan well-well explorasi tua, >> dgn minimum data log (hanya conventional standard tools), tanpa core. Ada >> beberapa offset well dgn data core, dgn jarak >25km. >> >> Apakah ada paper yang bisa saya gunakan utk panduan dalam analisa Rock >> Strength, dgn kondisi yg mirip dgn yg saya hadapi? >> >> Terima kasih >> regards, >> >> Edison Nadeak >> >> -----Original Message----- >> From: Anggoro Dradjat <[email protected]> >> Date: Thu, 2 Feb 2012 09:31:15 >> To: <[email protected]> >> Reply-To: <[email protected]> >> Subject: Re: [iagi-net-l] Secondary Porosity dan Sw calculation di shale >> gas >> >> Trimakasih, Pak Edison dan Mas Shofi topic yang menarik yang mungkin >> bisa kita kembangkan. >> >> Saya akan tuliskan kembali general observations dari synopsis dari >> paper R. March Bustin yang dikirimkan oleh Mas Shofi: >> General Observations . porosity decreases with diagenesis and >> effective stress . quartz maybe positive (biogenic) or negatively >> (detrital) correlated with TOC . more siliceous and silicified shales >> are more brittle tahan calay, organic or carbonate rich shales and >> have greater prospensity to be fractured and to be fraced (greater >> Young's modulus and lower Poisson ratio) . but too silicous = no K or >> porosity. >> >> Dari gambar core yang ada menunjukan adanya layering secara >> horizontal, adanya gas yang tersimpan semestinya tersimpan didalam >> fraksi organic, >> >> Anisotropy yang terdapat pada shale dalam contoh ini adalah adalah >> anisotropy yang terjadi secara verical (VTI, vertical transfer >> isotropic). >> >> Menurut pengamatan dan interpretasi saya pada umumnya shale dapat >> dikatakan elastik pada tingkat stress yang rendah dan dan bersifat >> plastik pada saat diberikan stress yang lebih besar, pada saat >> diberikan stress yang rendah terbentuk rekahan yang terbatas panjang >> dan lebarnya ketika ditambahkan stress maka yang kemudian berlaku >> adalah deformasi yang bersifat plastis; deformasi palastis inilah yang >> menyebabkan terjadinya disorientasi pada rekahan shale sehingga pada >> umumnya pada umumnya batuan pure shale tidak permeable. >> >> Keberdaan fraksi organik didalam shale yang pada umumnya terjadi >> secara lateral dapat mempengaruhi kekuatan batuan (Uniaxial rock >> strength)?. >> >> Apakah Pak Edison mempunyai data sonic, gamma ray ataupun cores >> >> Mungkin tahap awalnya sebaiknya dicoba dibuat hubungan antara rock >> strength yang diturunkan dari sonic log melalui persamaan geomekanika >> dengaan log yang lain semisal porosity, lalu diacari bagaimana >> hubungannya. >> >> Bersama ini saya kirimkan hubungan antara rock strength dengan >> porositas dilapangan kami sebagai example. >> >> >> >> Salam anggoro >> >> >> On 2/1/12, edison wrote: > Terima kasih banyak Mas Shofi, > > Saya >> coba pelajari sejenak.. > > > regards, > > Edison Nadeak > > >> -----Original Message----- > From: Shofiyuddin > Date: Wed, 1 Feb 2012 >> 12:52:26 > To: > Reply-To: > Subject: Re: [iagi-net-l] Secondary >> Porosity dan Sw calculation di shale > gas > > Mas, > Mungkin link >> dibawah ini bisa membantu sedikit. > > >> http://www.searchanddiscovery.com/documents/2009/40382bustin/ndx_bustin.pdf >>> > Salam > > Shofi > > > > On Wed, Feb 1, 2012 at 8:10 AM, edison >> wrote: >> Dear all Geoscientist, >> >> Saat ini saya sedang terlibat >> dalam study pre-liminary shale gas >> potential, sebagai well log >> analyst. >> >> Saya pernah mendengar presentasi dari salah satu >> konsultan shale gas dari >> kanada, bahwa perhitungan property >> reservoir shale gas tidak tepat dengan >> metoda konvensional. >> >> >> Saya ingin meminta bantuan saran dan informasi mengenai kuantifikasi >>>> fracture porosity dan Sw pada reservoir shale gas, termasuk >> alternatif >> pengujian apa saja yg bisa kita upayakan dlm kalibrasi >> perhitungan 2 hal >> tersebut di atas. >> >> Terima kasih banyak >> >> >>>> Hormat saya, >> >> Edison N >> regards, >> >> Edison Nadeak >> >> >>>> -------------------------------------------------------------------------------- >>>> PP-IAGI 2011-2014: >> Ketua Umum: Rovicky Dwi Putrohari, >> rovicky[at]gmail.com >> Sekjen: Senoaji, ajiseno[at]ymail.com >> >> -------------------------------------------------------------------------------- >>>> Jangan lupa PIT IAGI 2012 di Jogjakarta tanggal 17-20 September >> 2012. >> Kirim abstrak ke email: pit.iagi.2012[at]gmail.com. 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