Case studies of the bending vibration and whirling motion of drill collarsVANDIVER, J. K; NICHOLSON, J. W; RONG-JUIN SHYU et al.SPE drilling engineering. 1990, Vol 5, Num 4, pp 282-290, issn 0885-9744, 9 p.Conference Paper

Real-time capabilities, inspection systems fine-tune coiled tubingLIOU, Joanne.Drilling contractor. 2013, Vol 69, Num 2, issn 0046-0702, 96-102 [5 p.]Article

A new model for the estimation of formation forcesYAN TIEJIA; ZHONGXUAN; ZHANG JIANQUN et al.Shíyóu xuébào. 1993, Vol 14, Num 2, pp 121-128, issn 0253-2697Article

Drag-bit performance modelingWARREN, T. M; SINOR, A.SPE drilling engineering. 1989, Vol 4, Num 2, pp 119-127, issn 0885-9744, 9 p.Article

Drag bit wear modelSINOR, A; WARREN, T. M.SPE drilling engineering. 1989, Vol 4, Num 2, pp 128-136, issn 0885-9744, 9 p.Article

Prediction of wellbore trajectory considering bottomhole assembly and drill-bit dynamicsBRAKEL, J. D; AZAR, J. J.SPE drilling engineering. 1989, Vol 4, Num 2, pp 109-118, issn 0885-9744, 10 p.Article

How to organise mud loggind data for modelling rate of penetrationXU, H; FEAR, M; WHELEHAN, O et al.asia pacific oil & gas conference. 1995, pp 31-38Conference Paper

Measurement of weight on bit during coiled-tubing drillingBLOUNT, C. G; HEARN, D. D; PAYNE, M. L et al.Journal of petroleum technology. 1998, Vol 50, Num 12, issn 0149-2136, p. 40Conference Paper

Rational structure of a stepped diamond bit and its rock cutting processCAI JINGLUN; XU GUOXIAN.Shíyóu xuébào. 1991, Vol 12, Num 2, pp 97-106, issn 0253-2697, 10 p.Article

A simple, practical approach provides a technique for calibrating tortuosity factorsYUEJIN LUO; BARUCHA, Kaiwan; SAMUEL, Robello et al.Oil & gas journal. 2003, Vol 101, Num 35, pp 69-72, issn 0030-1388, 4 p.Article

Hochleistungsmotoren erhöhen den Bohrfortschritt = High performance motors increase the ROPFORSTNER, I; KLUTH, T.Erdöl, Erdgas, Kohle. 2002, Vol 118, Num 2, pp 63-66, issn 0179-3187Article

Innovative steerable system, combined with block set impregnated diamond bit design, dramatically improves economics of dutch hohrizontal wellSTAPEL, G; LUCAS, S; ILLERHAUS, R et al.IADC/SPE drilling conference. 1996, pp 571-581Conference Paper

Practical evaluation of rock-bit wear during drillingFAY, H;.SPE drilling & completion. 1993, Vol 8, Num 2, pp 99-104, issn 1064-6671Conference Paper

Application of yield design for understanding rock cutting mechanismCHALLAMEL, N; SELLAMI, H.EUROCK 98. Symposium. 1998, vol 2, 153-159Conference Paper

Brief : Coiled-tubing window millingHEARN, D. D; BLOUNT, C. G; KAMLOWSKY, P. E et al.JPT. Journal of petroleum technology. 1996, Vol 48, Num 9, pp 833-834Article

Coiled tubing drillingLEISING, L. J; NEWMAN, K. R.SPE drilling & completion. 1993, Vol 8, Num 4, pp 227-232, issn 1064-6671Conference Paper

Dynamic stability of drillstrings under fluctuating weight on bitDUNAYEVSKY, V. A; ABBASSIAN, F; JUDZIS, A et al.SPE drilling & completion. 1993, Vol 8, Num 2, pp 84-92, issn 1064-6671Conference Paper

An easy-to-use method for tracking rock-bit wear while drillingFAY, H.Revue de l'Institut français du pétrole. 1992, Vol 47, Num 4, pp 465-478, issn 0020-2274Conference Paper

Comparison of field and laboratory-stimulated drill-off testsBOURDON, J.-C; COOPER, G. A; CURRY, D. A et al.SPE drilling engineering. 1989, Vol 4, Num 4, pp 329-334, issn 0885-9744Conference Paper

Zur Problematik der Drillometeranzeige beim Flaschenzugsystem einer Bohranlage = Analysis of the weight-indicator interpretation of a drilling rigKESSLER, F.Erdöl, Erdgas, Kohle. 1993, Vol 109, Num 4, pp 160-162, issn 0179-3187Article

Dynamic analysis of the bottom-hole assembly with finite element methodCHEN HAO; CHEN ZHUXI.Shíyóu xuébào. 1991, Vol 12, Num 3, pp 121-127, issn 0253-2697Article

Determining the true weight-on-bit for diamont bitsWINTERS, W. J; WARREN, T. M.Annual technical conference and exhibition. 58. 1983, 16 p.Conference Paper

Method of Optimizing Motor and Bit Performance for Maximum ROPMOTAHHARI, H. R; HARELAND, G; NYGAARD, R et al.Journal of Canadian Petroleum Technology. 2009, Vol 48, Num 6, pp 44-49, issn 0021-9487, 6 p.Article

Methods to estimate the rock strength and tooth wear while drilling with roller-bits. Part 1: Milled-tooth bitsKARASAWA, H; OHNO, T; KOSUGI, M et al.Journal of energy resources technology. 2002, Vol 124, Num 3, pp 125-132, issn 0195-0738Article

On-Line Torque & Drag : A real-time drilling performance optimization toolREIBER, F; VOS, B. E; EIDE, S. E et al.SPE/IADC drilling conference. 1999, Vol 2, 129-138Conference Paper