6Kaufman A A. The electrical field in a borehole with a casing[J]. Geophysics, 1990, 55 (1).. 29-38.
7Kaufman A A, Wightman W E. A transmission-line model for electrical logging through casing[J]. Geophysics, 1992, 58 (12): 1739 - 1747.
8SUTTON D L, RAVI K M. New method for determiningdownhole properties that affect gas migration and annularsealingLC] //paper 19520-MS presented at the SPE AnnualTechnical Conference and Exhibition, 8-11 October 1989,San Antonio,Texas,USA. New York:SPE,1989.
9NAHM J J, WYANT R E,RASK J H,et al. New facetsof universal fluid usage: Reduction of hole wash-out andsolidification for environmentally safe drilling waste dis-posal[C] // paper 39384-MS presented at the IADC/SPEDrilling Conference, 3-6 March 1998,Dallas,Texas,USA.New York:SPE, 1998.