NEMUD.COM - North East Mud Services Company, LLC

This Northeast region is predominantly "air-drilling" country. Why?...Because air-drilling yields much faster penetration rates over fluid-drilling. The target formations have relatively low pore pressures and the Appalachian overthrust is riddled with faults and fractures. Since the 1960's, fluid-drilling rigs and cable tool rigs have quickly been replaced by air-drilling rotary rigs. Drilling fluid and workover fluids are now primarily used for controlling flows of water aquifers, high-flowing wildcat wells, working in gas storage fields or controlling unstable formations.

Foam-Drilling:
To help reduce the need for drilling fluid in certain regions, North East Mud Services Company has developed foam mixtures that are enriched with shale-stabilizing ingredients. These chemical and polymer ingredients work electro-chemically to coat and inhibit hydration of shales. The result is good hole cleaning, good penetration rates and exceptional bore hole stability.

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We have reentered regions of the Northeast that operators could not afford to drill due to economics resulting from formation problems. By using this "stiff-foam" technique, casing strings are minimized. Rig days are optimized as a result of zero down-time.

NEMSco now has available soap tanks with the ability to mix dry sack products. This results in lower material costs for stiff-foam mixtures.

Under-balanced drilling with foam:
This technique is used to control either formation instability, or control gas flow as the well is being drilled. The idea is to drill a zone of interest with air/foam and control the flow at the surface by holding back-pressure on the well. This promotes good penetration rates, keeps the drill bit and drilling motor cool, allows the operator to see gas-bearing zones as they are penetrated and eliminates fluid invasion and damage to the target zone.

Other service companies specialize in this type of drilling. If you would like to know more about this under-balanced technique, go to the "contact us" page.

Under-balanced drilling with fluid:
NEMSco can tailor a drilling fluid that has the precise density requirements for your project. If a fluid density at below 8.4 lb/gal is required, air or nitrogen may be introduced into the mud stream. This air or nitrogen injection rate is calculated by computer programs and metered into the mud stream so as to create the precise hydrostatic pressure desired.

Newly-evolved technology now allows us to monitor hydrostatic pressures at the drill bit and in the annulus of the well bore even as the well is being drilled. For more information on underbalanced drilling, click here.