New Water-Based Mud Balances High-Performance Drilling and Environmental Compliance
- William M. Dye (Baker Hughes Inc) | Kenneth Daugereau (Baker Hughes INTEQ Drilling Fluids) | Nels A. Hansen (INTEQ) | Michael J. Otto (INTEQ) | Larry Shoults (INTEQ) | Richard Leaper (Baker Hughes Drilling Fluids) | Dennis K. Clapper (INTEQ) | Tao Xiang (Baker Hughes Drilling Fluids)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- December 2006
- Document Type
- Journal Paper
- 255 - 267
- 2006. Society of Petroleum Engineers
- 2 Well Completion, 6.5.3 Waste Management, 1.11.4 Solids Control, 2.2.2 Perforating, 1.6 Drilling Operations, 4.3.1 Hydrates, 1.5 Drill Bits, 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 1.11.2 Drilling Fluid Selection and Formulation (Chemistry, Properties), 1.11 Drilling Fluids and Materials, 1.6.7 Geosteering / Reservoir Navigation, 5.9.2 Geothermal Resources, 1.6.9 Coring, Fishing, 1.6.1 Drilling Operation Management, 1.4.3 Torque and drag analysis, 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation, 1.1 Well Planning, 4.2.3 Materials and Corrosion, 3 Production and Well Operations, 2.4.3 Sand/Solids Control, 1.10 Drilling Equipment
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A new water-based mud system was 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 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 sometimes negate the benefits of their use. Conventional water-based muds (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.
The industry is increasingly drilling more technically challenging and difficult wells. Exploration and development operations have expanded globally as the economics of exploring and producing for oil and gas have improved with advancements in drilling technology. Advanced drilling operations such as deep shelf, extended reach, horizontal, and deepwater are technically challenging, inherently risky, and expensive. OBM and SBM have many inherent advantages over water-based drilling fluids, including temperature stability, tolerance to contamination, and corrosion protection. However, the fluid attributes of concern in this discussion are those most directly related to drilling performance and environmental issues. With consideration to reducing drilling problems such as torque and drag, stuck pipe, low rates-of-penetration, and wellbore stability, these wells are generally drilled with emulsion-based muds.
Environmental legislation governing drilling waste is continually restricting the discharge limits of spent muds and drilled cuttings. Operators are challenged with achieving a balance between minimizing the potential environmental impact of the drilling fluid against drilling objectives. The inherent advantages provided by emulsion muds are increasingly being offset by environmental compliance restrictions.
|File Size||3 MB||Number of Pages||13|
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