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.
الحفر
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.
يجري تحميل الحساب…
جرى هذا الحساب داخل متصفحك. لم يُرسل أي رقم أدخلته إلى أي جهة، ولم يُحفظ شيء.
كيف تُحسب
- Annular capacity per section is π(Dh² − Dp²)/4, string capacity is πDi²/4, both computed in SI and reported in bbl and bbl/ft.
- Effective pump output is displacement × volumetric efficiency. Strokes to bottoms-up is annular volume divided by that.
- Annular velocity per section is flow rate divided by that section's annular area — the number that decides whether the hole cleans.
المعايير التي تتحدثها
أين تتوقف عن الصحة
It is a geometric volume of an in-gauge hole. Real open hole is washed out, and a caliper commonly shows 5–15 % more volume than the bit size implies — which is exactly the error that lands a cement job short. Where a caliper exists, enter the caliper average as the hole diameter rather than the bit size.
أدوات ذات صلة
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.
ورقة القتل — طريقة الحفار
Kill mud weight, initial and final circulating pressure and the step-down schedule, for rehearsal and for checking a sheet that has already been worked.
أداة تدريب