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Register a new userFinding out the suitable drilling fluid to drill Korashina Anhdrite formation in the central region`s wells
إيجاد سائل الحفر المناسب لحفر طبقة الكوراشينا انهدريت في آبار المنطقة الوسطى
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ثراء السليمان( باحث )
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تعتبر تشكيلة الكوراشينا انهدريت في آبار المنطقة الوسطى طبقة الغطاء لتشكيلة الكوراشينا دوليميت الخازنة للغاز. و تتكون من تعاقب ملح ، و غضار، و شيل ، و أثناء حفر هذه التشكيلة تسببت بكثير من المشاكل ( تعليق في تشكيلة الحفر، ارتفاع ضغط المضخات ، استعصاء تشكيلة الحفر ) و التي أدت في بعض الأحيان إلى توقف عملية الحفر ، و بالتالي زيادة في زمن حفر البئر، و زيادة الكلفة النهائية لإنجاز البئر، و كان سائل الحفر المستخدم في حفر هذه الطبقة هو سائل حفر ذو أساس مائي مشبع بالملح و لم يحل المشكلة بشكل كامل. يهدف هذا البحث إلى إيجاد سائل حفر معالج ببعض البوليميرات و الأملاح لاستخدامه في حفر هذه التشكيلة بأقل المشاكل.
"Korashina Anhdrite" formation in the Syrian Central Region's wells considered as covering for "Korashina Dolimite" formation which is a gas bearing reservoir, and consists of a succession of salt, clay, and Shale. Much of the problems faced during drilling this strata like (High over pull/drag values, high pumps pressure, drill string stuck), which led in some cases to stop the drilling operation, and thus an increase in the drilling time, resulting in high final cost for the completion of the well, salt saturated water based drilling mud used to drill this formation but it did not completely solve the problems. This research aims to find out drilling mud treated with some kinds of polymers and salts to be used to drill this formation with the least problems.
References used
WALKER-T,2001-SILICATE MUDS.petroleum engineer, Vol 72 no 9 47-69
STEWART.S,2002-WATER –BASED cacl 2/SYNTHETIC POLYMER MUD .petrol and gas ,vol 64 no 5 , 23-46
Susan Abbott, Bill King ,Neal Branam, Ken Lindow ,2005- Baroid Fluids HandBook. UK, 370p
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