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Skin faktorunun artması
səbəbləri
Fəridə İsmayılova
Sen-2018
Skin nədir?
Skin quyuətrafı zonada
ilə nisbətdə layın qalan
hissəsindəki keçiricilik
fərqinin kəmiyyət
göstəricidir.
Quyudibi zonada
keçiricilik yaxsılaşarsa,
skin mənfi, pisləşərsə,
müsbət olar.
Kr0 layda neftə görə nisbi faza
keçiriciliyi
Ksr0 quyuətrafında neftə görə nisbi
faza keçiriciliyi
Skin düsturu
Q=
2πkH ∆P
𝜇β(ln
R
r
+S)
Müsbət və mənfi
skin:
+ skin hasilatı azaldır (düstura görə)
- skin hasilatı azaldır
Nisbi keçiricilik effekti, layın natamam açılması perforasiya
müsbət skin yaradır
Layın maili qazılması, turşu ilə yuyulması, hidravlik yayılma
mənfi skin yaradır.
Laylarası axın və skin modeli
1. Quyu sulaşmadan qabaq skin azalır
2. Aşağı layın sulaşması ilə skin artır
3. Laylararası axın nəticəsində su yuxarı laya keçir
4. Aşağıdakı layda effektiv keçiricilik yuxarıdakına nisbətən daha pis
olduğuna skin azalır
5. Yuxarı lay sulaşanda skin artır
6. Yuxarı layda su frontu irəliləməsi və bir yuxarıdakı laya suyun qalxması
ilə skin azalır
Çoxfazalı model
Quyunun bağlanması zamanı laylararası
axın yaranır və skin artı
Production Logging Tool
• Axın sürəti – v - veolcity
• Axın həcmi – V - Volume
• Fazanın boru en kəsiyində tutduğu sahə - Sx - holdup
• Həcm = v*V* Sx
• Quyudibi təzyiq və temperatur hesablamada nəzərə alınır
• GR detektoru - spektral GR analizi ilə mayedə Oksigen və Karbon miqdarı
• Fluid ma
Oil
Water Water
Gas
Suyun gəlməsi ilə skin artımı
Quyu Sulaşmış lay Laylarası axın ΔSkin PLT*
Quyu 1 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 34,1
Quyu 2 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 25
Quyu 3 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 5,8
Quyu 4 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 2,1
Quyu 5 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 1,6
*PLT – Production Logging Tool
Nəticə:
Skin artımına təsir edən amillər:
• Sulaşma faizinin artması
• Quyuların çoxsaylı dayandırılması
(quyuların təmiri və s. səbəblərdən)
• Quyuların bağlı qaldığı saat sayı
• Sulaşmadan sonra laylarası axın
Quyunun
bağlanma
sı (dəfə
və saat)
Lay-
larası
axın
Skin
artımı
Mexanizm
Sulaş
ma

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Skin faktorunun artması səbəbləri

  • 2. Skin nədir? Skin quyuətrafı zonada ilə nisbətdə layın qalan hissəsindəki keçiricilik fərqinin kəmiyyət göstəricidir. Quyudibi zonada keçiricilik yaxsılaşarsa, skin mənfi, pisləşərsə, müsbət olar. Kr0 layda neftə görə nisbi faza keçiriciliyi Ksr0 quyuətrafında neftə görə nisbi faza keçiriciliyi
  • 3. Skin düsturu Q= 2πkH ∆P 𝜇β(ln R r +S) Müsbət və mənfi skin: + skin hasilatı azaldır (düstura görə) - skin hasilatı azaldır Nisbi keçiricilik effekti, layın natamam açılması perforasiya müsbət skin yaradır Layın maili qazılması, turşu ilə yuyulması, hidravlik yayılma mənfi skin yaradır.
  • 4. Laylarası axın və skin modeli 1. Quyu sulaşmadan qabaq skin azalır 2. Aşağı layın sulaşması ilə skin artır 3. Laylararası axın nəticəsində su yuxarı laya keçir 4. Aşağıdakı layda effektiv keçiricilik yuxarıdakına nisbətən daha pis olduğuna skin azalır 5. Yuxarı lay sulaşanda skin artır 6. Yuxarı layda su frontu irəliləməsi və bir yuxarıdakı laya suyun qalxması ilə skin azalır Çoxfazalı model
  • 5. Quyunun bağlanması zamanı laylararası axın yaranır və skin artı
  • 6. Production Logging Tool • Axın sürəti – v - veolcity • Axın həcmi – V - Volume • Fazanın boru en kəsiyində tutduğu sahə - Sx - holdup • Həcm = v*V* Sx • Quyudibi təzyiq və temperatur hesablamada nəzərə alınır • GR detektoru - spektral GR analizi ilə mayedə Oksigen və Karbon miqdarı • Fluid ma Oil Water Water Gas
  • 7. Suyun gəlməsi ilə skin artımı Quyu Sulaşmış lay Laylarası axın ΔSkin PLT* Quyu 1 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 34,1 Quyu 2 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 25 Quyu 3 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 5,8 Quyu 4 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 2,1 Quyu 5 Lay B (aşağı lay) Lay B-dən Lay A-ya (yuxarı lay) 1,6 *PLT – Production Logging Tool
  • 8.
  • 9.
  • 10. Nəticə: Skin artımına təsir edən amillər: • Sulaşma faizinin artması • Quyuların çoxsaylı dayandırılması (quyuların təmiri və s. səbəblərdən) • Quyuların bağlı qaldığı saat sayı • Sulaşmadan sonra laylarası axın Quyunun bağlanma sı (dəfə və saat) Lay- larası axın Skin artımı Mexanizm Sulaş ma