| 本文已被：浏览次 下载次 |
码上扫一扫！ |
|
|
|
| An approach to casing program design with formation pressure uncertainties |
|
GUAN Zhi-chuan1,KE Ke1,LU Bao-ping2
|
|
(1. College of Petroleum Engineering in China University of Petroleum, Dongying 257061, China ;2. International Petroleum Exploration and Production Corporation, SIN OPEC, Beijing 100191, China)
|
| Abstract: |
| For the wells whose pressure information has a certain extent uncertainties，the distribution of parameters in pressure prediction models was determined by using probability analysis theory and different kinds of formation pressure profiles with credibility were established through theoretical calculation or Monte Carlo simulation. Casing program design methods with credibility of top to bottom and bottom to top were presented based on the safe density window of drilling fluid with credibility obtained by the pressure constraint criterion. The methods can give continuous casing points range without any test calculation process for shut-in kicking and differential pressure sticking included in the traditional design method. The practical results of a case well are in the designed range, the prediction results are satisfied. |
| Key words: pressure uncertainties deep water drilling casing program design credibility |
|
|