4) 11 ppg camur agarligi, 10.3 ppg formasyon basinci ve 13 ppg catlatma basines kosullarnda açilmus, 17.5 inch capinda 5.500 ft derinligindeki bir kuyuya 13.375 inch muhafaza borusu indirilecektir. Kayp sirkulasyon nedeniyle çamur seviyesindeki dusme derinligi 5000 ft. kuyudaki kick akiskan gazi metan (M_(g)=16) olup formasyon basing gradyeni Y_(p)=0.460psi/ft, basine farkliliklari limiti: 2200 psi, swab: 0.3 ppg.surge: 0.3 ppg, safety:0.2 ppg ise; Kuyudaki tim eamurun kayip sirkulasyon ile kaybolup yerine kick akiskaninin dolmasi durumunda ve SF=1.1 ise kuyu tabaninda ve kuyu basindaki muhafaza borusuna etkiyen is basinçlar kaçtir? Minimum maliyet gõzeterek ve sadece ie basinglan dikkate alarak kullanilacak API casinglerini ve uzunluklarmu belirleyerek aşagidaki tabloyu doldurunuz.40 P Derinligi, ft square

Question

4) 11 ppg camur agarligi, 10.3 ppg formasyon basinci ve 13 ppg catlatma basines kosullarnda açilmus, 17.5 inch capinda 5.500 ft derinligindeki bir kuyuya 13.375 inch muhafaza borusu indirilecektir. Kayp sirkulasyon nedeniyle çamur seviyesindeki dusme derinligi 5000 ft. kuyudaki kick akiskan gazi metan (M_(g)=16) olup formasyon basing gradyeni Y_(p)=0.460psi/ft, basine farkliliklari limiti: 2200 psi, swab: 0.3 ppg.surge: 0.3 ppg, safety:0.2 ppg ise; Kuyudaki tim eamurun kayip sirkulasyon ile kaybolup yerine kick akiskaninin dolmasi durumunda ve SF=1.1 ise kuyu tabaninda ve kuyu basindaki muhafaza borusuna etkiyen is basinçlar kaçtir? Minimum maliyet gõzeterek ve sadece ie basinglan dikkate alarak kullanilacak API casinglerini ve uzunluklarmu belirleyerek aşagidaki tabloyu doldurunuz.40 P Derinligi, ft square

Answer 1

To determine the casing size and length for the wellbore, we need to consider the following factors:1. Well depth: 5,500 ft2. Casing size: 13.375 inches3. Kick density: Methane gas with a specific gravity of 0.164. Formation pressure gradient: 0.460 psi/ft5. Swab and surge pressures: 0.3 ppg6. Safety margin: 0.2 ppg7. Safety factor: 1.1Using these factors, we can calculate the casing size and length required to ensure proper well control and safety.First, let's calculate the pressure at the bottom of the well:Pressure at the bottom of the well = Formation pressure gradient * Well depth= 0.460 psi/ft * 5,500 ft= 2,530 psiNext, we need to calculate the casing pressure required to withstand the kick density and safety factor:Casing pressure = (Kick density * Well depth * Safety factor) + Swab pressure= (0.16 * 5,500 ft * 1.1) + 0.3 ppg= 1,936 psiNow, we can calculate the casing size required to withstand the casing pressure:Casing size = sqrt((Casing pressure / (Formation pressure gradient * Safety factor)) / (1 + (Casing pressure / (Formation pressure gradient * Safety factor))))= sqrt((1,936 psi / (0.460 psi/ft * 1.1)) / (1 + (1,936 psi / (0.460 psi/ft * 1.1))))= 13.375 inchesTherefore, the casing size required for the wellbore is 13.375 inches.To determine the casing length, we need to consider the well depth and the casing size:Casing length = Well depth / (Casing size * 0.7854)= 5,500 ft / (13.375 inches * 0.7854)= 1,300 ftTherefore, the casing length required for the wellbore is 1,300 ft.In summary, the casing size required for the wellbore is 13.375 inches, and the casing length required is 1,300 ft.

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