... shoe flexural attenuation obm acoustic impedance barite formation creep typical signature acoustic impedance crossplot petroleum engineer this well lbm gal crossplot Introduction After an oil well reaches the end of its economic life, the operator decides to either abandon the well...

... to obtain flat rheological behavior under high pressure and temperature by using commercial organoclays. A flat rheological behavior is achieved by incorporating organic-inorganic hybrids in drilling fluids. drilling fluids and materials OBM soih rheological behavior drilling fluid property...

... Abstract A model of the diffusion of methane into a wellbore in overbalance with Oil Based Mud is described. In some situations, methane diffusion may cause unexpected gas in riser and well control problems. The situation when the OBM contaminated with diffused methane is circulated...

... Abstract Tor/Ekofisk wells drilled in the Danish sector of the North Sea have historically suffered from borehole instability problems when intersecting the Upper/Lower Lark and Horda shale formations using either water-based mud (WBM) or oil-based mud (OBM). An extensive wellbore stability...

... the successful deployment operation in detail. Upstream Oil & Gas cement ball valve Abandonment System operator Completion Installation and Operations OBM new abandonment system Circulate perforation firing head cement plug major operator circulation path bridge plug RBP plug...

... The well was displaced with 16.2 ppg K-Formate WBM with the following spacers to begin the 7 inch section. 60 bbls viscous OBM, 16 ppg 50 bbls 17 ppg spacer (33 bbls water + 100 lbs. enhanced xanthan biopolymer + 2800 lbs Barite to 17 ppg + defoamer + 110 gal solvent) 25 bbls 16 ppg K...

... Abstract Knowledge of swelling properties of shale-oil formations as well as the effects of various drilling fluids, including both water-based and oil-based muds (OBMs), which are of critical importance to wellbore-stability problems, requires a better understanding of shale-oil properties...

...-runs occurred and several wellbores were lost and required re-drilling. Managed Pressure Drilling (MPD) allowed the operator to use Oil Based Mud (OBM) to control the sensitive shale formations while drilling with a mud weight low enough to prevent lost circulation. MPD dramatically reduced OBM losses...

... Abstract Both oil- and water-based fluids have been used to drill in the Fayetteville shale play with mixed results. Oil-based muds (OBM) provide reliable inhibition and drilling performance, but environmental and economic concerns have generated interest in water-based alternatives. However...

... laboratory test was conducted to evaluate the tolerance of a gas reservoir to damage by various mud systems. One water based system (WBM), two invert emulsion systems (OBM), a pure oil mud, a pure oil, and a pure oil emulsion were tested on real gas reservoir cores. The water-based mud gave high return...

... and other fluid associated NPT are common. The case histories presented are from an independent operator drilling in South Texas and highlight the successes and optimized learning curve of the system as compared to offsets drilled with conventional water-based mud (WBM) and oil-based mud (OBM) systems...

... a better way to address this problem in the same way it has been successfully demonstrated to work using water-based fluids (WBM). To check the performance of the MFC method while using oil-based mud (OBM), a series of full-scale tests were conducted at Louisiana State University PERTT Laboratory using...

... that is added to the water phase of the mud. Also other mud systems, including OBM, may be included by proper adjustment of the mud input parameters. In such cases, the fluid activity must be specified separately. Formation Properties This embraces both mechanical and petrophysical parameters. Key...

... 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...

... in the development drilling of the field. A rotating control device (RCD) was employed to drill ahead blind (no fluid returns) by pumping a sacrificial fluid (water) down the drillpipe. Simultaneously, a pressurized mud-cap on the annulus with weighted oil based mud OBM controlled hydrocarbon influx. The overall...

...-based drilling fluid drilling fluid property huai muk characteristic polyglycol drilling fluid management & disposal obm ·~I SPE/IADC 29378 - Low Salinity Polyglycol Water-Based Drilling Fluids as Alternatives to Oil-Based Muds R.G. Bland* and G.L. Smith, Baker Hughes INTEQ, and Pasook...

... (ECP's) every 500' to provide production control. liner upstream oil & gas oil-base mud tangent section wellbore sandstone reservoir drilling operation west cement medrano unit build rate circulation reservoir directional drilling obm packer ecp lateral horizontal well...

... circulation rate experiment detection parameter well control stand pipe pressure annular pressure drilling drilling operation pit gain return flow alarm level detector influx upstream oil & gas sensitivity iadcispe 23934 oil-based mud water-based mud return flow signal obm...

... the ester mud to be classed as â??readily biodegradableâ?¿ by European community (EC) protocol. To assess the environmental impact, a long-term seabed survey programme at the wellsite is ongoing. Introduction Oil base muds (OBM), as used in the North Sea today, are formulated with low aromatic mineral...

... sparked a resurgence of oil mud research and development which has resulted in oil-based mud (OBM) systems being used routinely in many active drilling areas worldwide. Concerns for conservation, both economic and environmental, persist even after low toxicity oils have been accepted, based on field...