fax 01-972-952-9435. AbstractA new water-based mud system has been successfully introduced as a high-performance, environmentally compliant alternative to oil and synthetic emulsion-based muds (OBM/SBM). Historically, emulsion muds have been the "systems-of-choice" when drilling challenging onshore, continental shelf and deepwater wells in order to minimize risk, maximize drilling performance and reduce costs. However, environmental constraints, a high frequency of lost circulation and the high unit cost of emulsion systems often negate the benefits of their use. Conventional water-based mud (WBM) offer the benefits of environmental compliance, attractive logistics and a relatively low unit cost but consistently fail to approach the drilling performance of OBM and SBM.The new high-performance water-based mud (HPWBM) is designed to close the significant drilling performance gap between conventional WBM and emulsion-based mud systems. The system has undergone extensive field testing on very challenging onshore, deepwater and continental shelf wells that would otherwise have been drilled with oil or synthetic-based muds.This paper provides a detailed technical overview of the new system, discusses its inherent environmental advantages and presents case histories comparing performance to offset wells drilled with emulsion and conventional WBM systems.
fax 01-972-952-9435. AbstractA new water-based mud system has been successfully introduced as a high-performance, environmentally compliant alternative to oil and synthetic emulsion-based muds (OBM/SBM). Historically, emulsion muds have been the "systems-of-choice" when drilling challenging onshore, continental shelf and deepwater wells in order to minimize risk, maximize drilling performance and reduce costs. However, environmental constraints, a high frequency of lost circulation and the high unit cost of emulsion systems often negate the benefits of their use. Conventional water-based mud (WBM) offer the benefits of environmental compliance, attractive logistics and a relatively low unit cost but consistently fail to approach the drilling performance of OBM and SBM.The new high-performance water-based mud (HPWBM) is designed to close the significant drilling performance gap between conventional WBM and emulsion-based mud systems. The system has undergone extensive field testing on very challenging onshore, deepwater and continental shelf wells that would otherwise have been drilled with oil or synthetic-based muds.This paper provides a detailed technical overview of the new system, discusses its inherent environmental advantages and presents case histories comparing performance to offset wells drilled with emulsion and conventional WBM systems.
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