Entries by Jan Lunde
Lost circulation
Reduce probability for Lost circulation. Master thesis (2021) indicate severe cost in conjunction with lost circulation. Can be significantly reduced if drilling and fluid is selected based on expected formation / pore pressure plot.
Environment
Environmental impact (17 ½ and 12 1/4 sections). Not HTHP. WBM OBM Emissions Yes No (vessel transport to shore) ROP 1 1.2 Consumption X2.5 x1 Transport to/from rig X2.5 x 1.3 = 3.25 X1 x 1.65 = 1.65 Production of slop No Yes Effect on the working environment -1 -2 Harmful external environment 1 2 […]
Hole cleaning – reduce time in drilling operations
Situation A horizontal drilling operation might result in poor hole cleaning. To overcome the hole cleaning issue, traditional procedure is to circulate mud with no drilling progression (ROP=0). This results in additional time spent in drilling operation. Cost calculation With a pump flow of approx. 1 m/s on depth 3600m, it will take one hour […]
Potential cavings/wellbore instability
Situation Traditionally, selection of Oil Based Mud (OBM) can be a challenge (source: SPE 184661 and SPE 150714). Case: During drilling, large amount of cavings resulted in severe overpull and almost stuck pipe. Due to high concentration of KCL exposed to the formation over long time. Result: Poor wellbore state was plugged back. Entire new […]
MUDSIM-ECO – Simulation of drilling fluid’s impact on the environment in drilling operations
Many, and sometimes confusing, requirements for drilling operations makes it complicated to map environmental consequences for different types of drilling fluid. MUDSIM-ECO, a cloud-based planning and simulation tool, provide the industry with documentation of the drilling mud’s effect on the environment, and relates environment effects to other important drilling properties. MudSim-Eco is well suited for […]
New software for planning and simulation of oil & gas drilling gives more environmental friendly drilling mud
MUDSIM, a new ground breaking software for streamlining drilling fluid design in a cloud-based system, provides a positive environmental impact and at the same time reduce likelihood of unexpected incidents during drilling. Positive response from the oil industry. The newly developed fluid simulation software MUDSIM reduces environmental footprint in drilling operations. The first version of […]
Design of drilling fluid in less than 40 hours
MUDSIM software shortens drilling fluid design time by using experience data from a cloud-based system. At the sime time also reducing the environmental impact and risk for downtime and surprises when drilling. MUDSIM improves interaction and increases efficiency in a newly developed process for selecting the optimal and most environmentally friendly drilling fluid. It does […]