Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 3 of 3 for “"PDC bit"”.
-
Influence of Bit Design on the Stability of the Rotary Drilling System
… which can lead to drilling dysfunctions such as bit bounce, stick-slip and whirling. These dysfunctions cause premature failure of drill bits and other components within the system, ultimately leading to increased cost of the drilling operation. It is of interest, therefore, to understand the …
-
Analytical Modeling and Diagnosis of Penetration Rate Performance of PDC Bits
… between rock, drilling fluid, cuttings, and the bit control ROP. More specifically, several researchers have concluded that bit balling is the major cause of slow ROP in deep shales drilled using water base mud (WBM). Lab and field examples of bit balling in oil base mud (OBM), although uncommon, …
-
Assessment and Modelling of Wear prediction and Bit Performance for Roller Cone and PDC Bits in Deep Well Drilling
… of hole (POOH), casing running, and cementing. Bit wear is considered as the essential issue that influences in direct way on the bit performance and reduce ROP. Predicting the abrasive bit wear is required to estimate the right time when to POOH to prevent any costly job to fish any junk out to …