Mikro Boyutlu Kolemanitin Su Bazlı Sondaj Çamurunun Reolojik Özelliklerine Etkisi

Öz

Sondaj çamuru petrol aramalarının en büyük maliyet kalemini oluşturduğu için sürekli olarak üzerinde çalışılan konu olmuştur. Son zamanlarda, çeşitli katkı maddeleri eklenerek sondaj çamurunun reolojik özellikleri iyileştirilmeye yönelik çalışmalar devam etmektedir. Bu çalışmada, petrol aramalarında en çok kullanılan su bazlı sondaj çamuru hazırlanmış ve hazırlanan sondaj çamuruna 100 µm elek altı tane boyutunda kalsiyum borat grubu minerali olan kolemanit (Ca2B6O11.5H2O) farklı konsantrasyonlarda (1, 2, 3, 4 ve 5) (%w/v) eklenmiştir. Elde edilen sondaj çamurlarının plastik viskozite (PV), görünür viskozite (AV), jel mukavemeti, su kaybı ve kek kalınlığı gibi reolojik özellikleri Fann Viskometre ve Amerikan Petrol Enstitüsü (API) sıvı kaybı test aletleri kullanılarak detaylı bir şekilde analiz edilmiştir. Çalışma sonucunda, eklenen kolemanitin sondaj çamurunun reolojik özelliklerine olumlu yönde etki ettiği görülmüştür. Farklı oranlarda kolemanit eklenmesi sonucu elde edilen sondaj çamurların analiz sonuçları birbiriyle mukayese edildiğinde ise; %4 oranında kolemanit eklenmiş sondaj çamurunun en iyi özelliklere (jel mukavemeti hariç)  sahip olduğu görülmüştür. Kolemanit eklenerek hazırlanan su bazlı sondaj çamurunun, herhangi bir ekleme yapılmaksızın hazırlanan su bazlı sondaj çamuruna kıyasla, plastik viskozitesinin %30,4 cP; görünür vizkozitesinin %63,6 cP; kopma noktasının %140 arttığı; jel mukavemeti (10-saniye ve 10-dakika) değerlerinin de olumlu yönde etkilendiği tespit edilmiştir. 

 

Anahtar Kelimeler

• Sondaj çamuru,Kolemanit,Reolojik özellikler,Filtrasyon kaybı

Effect of Micro-Sized Colemanite on the Rheological Properties of the Water Based Drilling Fluid

Öz

Drilling mud have been the subject of constant study since they are the most costly item of oil exploration. Recently, the several additives have been added to improve the rheological properties of the drilling mud. In this study, a water based drilling mud that is (1, 2, 3, 4 and 5) (% w/v) of colemanite (Ca2B6O11.5H2O), which is a calcium borate group mineral in the particle size of 100 μm subscale, was prepared for this drilling mud. The rheological properties such as plastic viscosity (PV), apparent viscosity (AV), gel strength, water loss and cake thickness of the obtained drilling muds were analyzed in detail using Fann Viscometer and American Petroleum Institute (API) testing equipment. As a result of the study, it was found that the added colemanite had a positive effect on the rheological properties of the drilling mud. When the analysis results of the drilling muds obtained at different ratios of colemanite addition are compared with each other, it is found that 4% of colemanite-added drilling mud has the best properties (excluding gel strength). The water-based drilling mud prepared by adding colemanite has 30.4% cP of plastic viscosity; 63.6% cP of apparent viscosity; 140% of rupture point; gel strength (10-sec and 10-min) values compared to the water based drilling muds prepared without any addition was positively affected. 

 

Anahtar Kelimeler

• Drilling mud,Colemanite,Rheological properties,Loss of filtratio

Kaynakça

1. 1. Abdo, J., Haneef, M., 2012. Nano-Enhanced Drilling Fluids: Pioneering Approach to Overcome Uncompromising Drilling Problems. J. Energy Resour. Technol., 134(1), p.014501.
2. 2. Benchabone, A., Bekkour, K., 2006. Effect of Anionic Additives on the Rheological Behaviour of Aqueous Calcium Montmorillonite Suspensions. Rheol. Acta., 45(4), 425-434.
3. 3. Amanullah, M., Arfaj, M.K., Abdullati, Z.A., 2011. Effect of CuO and ZnO Nanofluids in Xanthan Gum on Thermal, Electrical and High Pressure Rheology of Water-based Drilling fluids. J. Pet. Sci. Eng., 117, 1–9.
4. 4. Zhong Qiu, Z., Huang, W., Cao, J., 2011. Shale Inhibitive Properties of Polyether Diamine in Water-based Drilling Fluid, Hanyi. J. Pet. Sci. Eng., 78, 510-515.
5. 5. Amanullah, Md., Yu, L., 2005. Environment Friendly Fluid Loss Additives to Protect the Marine Environment from the Detrimental Effect of Mud Additives. J. Pet. Sci. Eng., 48, 199-208.
6. 6. Gentzis, T., Deisman, N., Chalaturnyk, R.J., 2009. Effect of Drilling Fluids on Coal Permeability: Impact on Horizontal Wellbore Stability. Int. J. Coal Geol., 78, 177-191.
7. 7. Wenga, J., Gonga, Z., Liaoa, L., Lva, G., Tanb, J., 2018. Comparison of Organo-sepiolite Modified by Different Surfactants and Their Rheological Behavior in Oil-based Drilling Fluids. Appl. Clay Sci., https://doi.org/10.1016/ j.clay.2017.12.031, (in press)
8. 8. Zhuanga, G., Zhanga, Z., Yang, H., Tan, J., 2018. Structures and Rheological Properties of Organo-sepiolite in Oil-based Drilling Fluids. Appl. Clay Sci., 154, 43–51.

9. 9. Nabhani, N., Emami, M., 2012. The Potential Impact of Nano Materials in Oil Drilling Industry, NanoCon.
10. 10, 23-25. 10. Al Yasiri, M., Al Sallami, W., 2015. How the Drilling Fluid Can be Made More Efficient by Using Nanomaterials. American Journal of Nano Research and Applications, 3(3), 41-45.
11. 11. Eti Mine., 2014a. Kestelek Colemanite, Product catalogue, p. 2, Ankara, Eti Mine Works General Management Publishing.
12. 12. Eti Mine., 2014b. Milled Colemanite, Product Catalogue, p. 3, Ankara, Eti Mine Works General Management Publishing.
13. 13. API, 13B-1, 2003. Recommended Practice for Field Testing of Water-based Drilling Fluids. American Petroleum Institute. ANSI/API 13B1/ISO 10414-1.
14. 14. Falode, O.A., Ehinola, O.A., Nebeife, P.C., 2008. Evaluation of Local Bentonite Clay as Oil Well Drilling Fluid in Nigeria. Applied Clay Sci., 39(1-2), 19-27.
15. 15. Xianhai, M., Yihe, Z., Paul, K.C., 2012. Effects of Carbon Ash on Rheological Properties of Water-based Drilling Fluids. J. Pet. Sci. Eng., 100, p.1-8.
16. 16. Ahmaruzzaman, M., 2010. A Review on the Utilization of Fly Ash. Progress in Energy and Combustion Science, 36(3), 327-363.