Bor minerallerinin su bazlı sondaj çamurunun reolojik ve filtrasyon özellikleri üzerindeki etkilerinin incelenmesi: Deneysel çalışma

Yıl 2019, Cilt: 25 Sayı: 7, 884 - 888, 26.12.2019

Abdullah Özkan , Behlül Merve Kaplan

Öz

Bu çalışmanın amacı, bor minerallerinin su bazlı sondaj çamurunun reolojik ve filtrasyon özellikleri üzerindeki etkisini incelemektir. Bu amaçla, su bazlı sondaj çamuru hazırlanarak içerisine 45 μm partikül boyutuna sahip boraks (Na2B4O7.10H2O), 75 μm partikül boyutuna sahip üleksit (NaCaB5O9.8H2O) ve 100 μm partikül boyutuna sahip kolemanit (Ca2B6O11.5H2O) farklı oranlarda (1-5% w/v) eklenmiştir. Boraks, üleksit ve kolemanitin karekterizasyonu X-ışınları floresans spektrometresi (XRF) ile yapılmıştır. Bor türevleri içeren su bazlı sondaj çamurunun görünür viskozite, plastik viskozite, kopma noktası ve jel mukavemeti gibi reolojik özellikleri FANN viskozimetresi ile belirlenmiştir. Filtrasyon özellikleri, API Filter Presi kullanılarak incelenmiştir. Tüm ölçümler, Amerikan Petrol Enstitüsü (API) standartlarına göre gerçekleştirilmiştir. Boraks, üleksit ve kolemanit minerallerinin ayrı ayrı eklenmesi (%1-5 w/v) ile hazırlanan sondaj çamurlarının reolojik ve filtrasyon özellikleri kendi içlerinde, daha sonra birbirleri ile ve son olarak ta katkısız su bazlı sondaj çamuru ile karşılaştırılmıştır. Bor minerallerinin sondaj çamurunun reolojik özelliklerine olumlu yönde katkı sağladığı tespit edilmiştir. Boraks ve kolemanitin, üleksite oranla daha iyi bir etkiye sahip olduğu görülmüştür. Katkısız su bazlı sondaj çamuruna kıyasla, çamura bor mineralleri eklenmesinin çamurun filtrasyon kaybı ve kek kalınlığını attırdığı görülse de sonuçların referans değer aralığında olduğu tespit edilmiştir.

Anahtar Kelimeler

Bor mineralleri, Su bazlı sondaj sıvısı, Sondaj çamuru, Reolojik özellikler, Filtrasyon kaybı

Investigation of the effects on rheological and filtration properties of water-based drilling mud of boron minerals: An experimental study

Öz

The aim of this study is to determine the effect on the rheological and filtration properties of water based drilling fluid of boron minerals. For this purpose, water-based drilling mud was prepared and borax (Na2B4O7.10H2O) with a particle size of 45 μm, ulexite (NaCaB5O9.8H2O) with a particle size of 75 μm and colemanite (Ca2B6O11.5H2O) with a particle size of 100 μm with different concentrations 1-5 (% w/v) are separately added. The characterization of borax, uleksite and colemanite are examined using X-ray fluorescence spectrometer (XRF). The rheological properties such as apparent viscosity, plastic viscosity, yield point and gel strength of the developed mud systems adding boron minerals were determined with a FANN viscometer. The filtration properties were examined using an API Filter Press. All physical measurements were carried out according to the American Petroleum Institute (API) standards. Borax, ulexite and colemanite added (1-5% w/v) drilling muds rheological and filtration properties then compared to each other and the additive free water based drilling mud. The rheological and filtration properties of the developed mud systems are compared to original (additive free) mud system and with each other respectively. It is observed that boron additives improve the rheological properties of the drilling mud. Borax and colemanite have a better effect compared to ulexite. Filtration properties such as filtrate loss and filter cake thickness are increased compared to the original mud system but still in the reference value range and can be implemented to drilling operations.

Anahtar Kelimeler

Boron minerals, Water based drilling fluid, Drilling mud, Rheological properties, Filtration loss

Kaynakça

• Abdo J, Haneef M. “Nano-enhanced drilling fluids: pioneering approach to overcome uncompromising drilling problems”. Journal of Energy Resources Technology, 134(1), 014501 (1-6), 2012.
• Benchabone A, Bekkour K. “Effect of anionic additives on the rheological behaviour of aqueous calcium montmorillonite suspensions”. Rheologica Acta, 45(4), 425-434, 2006.
• Amanullah M, Arfaj MK, Abdullati ZA. “Effect of CuO and ZnO nanofluids in xanthan gum on thermal, electrical and high pressure rheology of water-based drilling fluids”. Journal of Petroleum Science and Engineering, 117, 1-9, 2011.
• Zhong QZ, Huang W, Cao J. “Shale inhibitive properties of polyether diamine in water-based drilling fluid, Hanyi”. Journal of Petroleum Science and Engineering, 78(2), 510-515, 2011.
• Amanullah M., Yu L. “Environment friendly fluid loss additives to protect the marine environment from the detrimental effect of mud additives”. Journal of Petroleum Science and Engineering, 48, 199-208, 2005.
• Gentzis T, Deisman N, Chalaturnyk RJ. “Effect of drilling fluids on coal permeability: Impact on horizontal wellbore stability”. International Journal of Coal Geology, 78, 177-191, 2009.
• Wenga J, Gonga Z, Liaoa L, Lva G, Tanb J. “Comparison of organo-sepiolite modified by different surfactants and their rheological behavior in oil-based drilling fluids”. Applied Clay Science, 159, 94-101, 2018.
• Zhuanga G, Zhanga Z, Yang H, Tan J. “Structures and rheological properties of organo-sepiolite in oil-based drilling fluids”. Applied Clay Science, 154, 43-51, 2018.
• Eti Mine. Kestelek colemanite. Product atalogue, p.2. Ankara, Eti Mine Works General Management Publishing, 2014a.
• Eti Mine. Milled colemanite. Product catalogue, p.3. Ankara, Eti Mine Works General Management Publishing, 2014b.
• Özkan A, Kaplan BM, Özkan V, Turan SE. “Effect of micro-sized colemanite on the rheological properties of the water based drilling fluid”. Çukurova University Journal of the Faculty of Engineering and Architecture, 33(4), 83-88, 2018.
• API R. “13-B1: Recommended practice for field testing of water-based drilling fluids”. American Petroleum Institute. ANSI/API 13B-1/ISO 10414-1, 2003.
• Shah SN, Shanker NH, Ogugbue CC. “Future challenges of drilling fluids and their rheological measurements”. In American Association of Drilling Engineers, Fluids Conference and exhibition, Houston, Texas, 6-7 April 2010.
• API R. “13-A: Specification for drilling fluid materials”. American Petroleum Intitute, ANSI/API 13A/ISO 13500, 2010.
• Falode OA, Ehinola OA, Nebeife PC. “Evaluation of local bentonite clay as oil well drilling fluid in Nigeria”. Applied Clay Science, 39(1-2), 19-27, 2008.
• Xianhai M, Yihe Z, Paul KC. “Effects of carbon ash on rheological properties of water-based drilling fluids”. Journal of Petroleum Science and Engineering, 100, 1-8, 2012.
• Ahmaruzzaman M. “A review on the utilization of fly ash”. Progress in Energy and Combustion Science, 36(3), 327-363, 2010.
• Kasiralvalad E. “The great potential of nanomaterials in drilling & drilling fluid applications”. International Journal of Nano Dimension, 5(5), 463-471, 2014.
• Ersoy A. Sondaj Teknikleri ve Uygulamaları. Adana, Türkiye, Nobel Kitabevi, 2008.