أحجام البئر وزمن الدوران
Annular and string volumes section by section, then the strokes and the minutes to bottoms-up and to a full circulation.
الحفر
أقصى ضغط سطحي مسموح وتدرج التكسر
Turn a leak-off or integrity test into a fracture gradient, a maximum allowable mud weight and the surface pressure the shoe will take.
يجري تحميل الحساب…
جرى هذا الحساب داخل متصفحك. لم يُرسل أي رقم أدخلته إلى أي جهة، ولم يُحفظ شيء.
كيف تُحسب
- Formation strength at the shoe = 0.052 × test mud weight × shoe TVD + surface test pressure.
- Fracture gradient = strength / shoe TVD; equivalent mud weight = gradient / 0.052.
- MAASP = (maximum allowable MW − current MW) × 0.052 × shoe TVD, with the allowable MW reduced by whatever safety margin you set.
- Kick tolerance is expressed as the equivalent mud weight at total depth that the shoe can still support.
المعايير التي تتحدثها
أين تتوقف عن الصحة
The test measures the weakest point exposed at the time it was run, which is usually just below the shoe but not always — an unseen weak bed deeper in the open hole will fail first and this number will not warn you. Leak-off also changes after the hole has been open for days, and ballooning formations give a leak-off that is partly elastic and partly real. Re-test rather than re-use an old number on a long open-hole section.
القدرة التي تؤتمت هذا العمل
- DR-02الكشف المبكر عن الاندفاع والتحكم بالبئرA kick is formation fluid entering the wellbore. Left unchecked it becomes a blowout. This watches eleven sensor streams and warns the crew minutes earlier than pit-volume alarms do.
- DR-04التنبؤ باستقرار جدار البئرPredicts the mud weight window that keeps the hole open — not too light and it caves, not too heavy and it fractures.
أدوات ذات صلة
الكثافة المكافئة أثناء الدوران وضغط القاع
Annular pressure loss, flow regime and the equivalent circulating density the formation actually sees while the pumps are running.
هيدروليك اللقمة واختيار الفوهات
Total flow area, nozzle pressure drop, HSI and jet impact force — plus the nozzle size that would put the optimum share of pump pressure at the bit.
المسح الاتجاهي — الانحناء الأدنى
Paste MD, inclination and azimuth and get TVD, northings, eastings, dogleg severity, vertical section and closure — with the well path drawn.