شماره ركورد كنفرانس :
4518
عنوان مقاله :
Drilling and Completion Challenges in Gas Wells of Iranian Southern Gas Condensate Reservoirs
Author/Authors :
Hamid Reza Nasriani Iranian Central Oil Fields Co. (ICOFC)- National Iranian Oil Co. (NIOC). Reservoir Engineering Department, Zand tower, Shiraz , Mostafa Mohkam Iranian Central Oil Fields Co. (ICOFC)- National Iranian Oil Co. (NIOC). Reservoir Engineering Department, Zand tower, Shiraz , Mohammad Sinaei Iranian Central Oil Fields Co. (ICOFC)- National Iranian Oil Co. (NIOC). Reservoir Engineering Department, Zand tower, Shiraz , Arjang Geramifard Iranian Central Oil Fields Co. (ICOFC)- National Iranian Oil Co. (NIOC). Reservoir Engineering Department, Zand tower, Shiraz , Ali Mohammad Jafarpour Iranian Central Oil Fields Co. (ICOFC)- National Iranian Oil Co. (NIOC). Reservoir Engineering Department, Zand tower, Shiraz
كليدواژه :
Drilling , Reservoirs , High and low pressure formations , Shale layers , Sloughing
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
According to Iran Petroleum Ministry, Iran's proved natural gas reserves are about
1,045.7×10^12 cu ft (29,610 km3) or about 15.8% of world's total reserves, of which 33% are as
associated gas and 67% is in non associated gas fields. It has the world's second largest reserves
after Russia.
This paper reviews drilling challenges in retro grade gas condensate wells in South Zagros area.
Important problems in drilling and well completion in this area are: High mud loss, Shale layers
existence between reservoir layers or reservoir layers with high shale percentages that can cause
problems while drilling operation and also production. Blue-zone layer, inappropriate cementing ,
sloughing , unstable well wall ,gaining drilling fluid flow and drilling fluid increase , drilling in
hard layers , designing liner and casing shoe in production interval and etc… which makes serious
challenges in drilling and completion of gas wells in south of Iran.
