Analysis on the Problems of H020U Drilling and the Corresponding Solutions

Abstract:

Many problems were encountered in the drilling procedure of H020U of Beypazari trona mine in Turkey, such as the drilling fluid leakage; the severe bit abrasion by the hard silicified limestone; hitting the production casing of V020; brine gushing; instrument dropping into the open hole; inclination angle going down and azimuth deviating with the unexpected cavity, which caused the second target was not hit, and so on. All of these problems were analyzed and the corresponding solutions were brought forward. Finally both of the first target V020 and the second target V020U were successfully connected by H020U.