USA patents for Oil and Gas drilling practices/materials containing depleted uranium or tungsten or lead or other heavy metals:
7,059,429 Drilling assembly and method
6,978,850 Smart clutch
6,581,700 Formation cutting method and system
6,386,300 Formation cutting method and system
6,216,802 Gravity oriented directional drilling apparatus and method
4,428,108 Method of forming encapsulated depleted uranium oil field tubular member
4,310,059 Composite heavy metal drill collar
4,278,138 Composite heavy metal drill collar
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=0&f=S&l=50&TERM1=drill+collar&FIELD1=&co1=AND&TERM2=depleted+uranium&FIELD2=&d=PTXT
Could this help explain TSEs found in areas of western Canada? CWD in Saskatchewan and Alberta are all found in areas with alot of Oil and gas activity.
Patent 6,581,700 uses "solid material impactors made of DU, steel or ceramic, that have a mean diameter of at least 0.100 inches", that's not very large. These solid material impactors are added to drilling fluids. Are they removed? not likely, perhaps they are smashed to bits during the drilling process?
Either way, if the DU or tungsten ends up in the drilling fluids, which it must, it will be spread on the land with the drilling mud. Our cattle, sheep, horses, goats and our crops are going to take these metals up (especially when they are spread on grass and not incorporated into the cultivated soil). Clays will bind these metals more readily than sandy soils; and CWD is very common in areas or Saskatchewan and Alberta with sandy soil.
Ranchers, landowners, if you have drilling activity on your land and you take the drilling mud or get paid to take it, please at the very least - spread it on cultivated land and work it in. Even if there is no depleted uranium or tungsten in the drilling fluid, there is usually barium which is also toxic. As well, NORMS (naturally occurring radioactive materials) could be brought to the surface with the drilling mud.
Sorry guys but I do not trust this industry when they say the mud is safe. For several years now we have not accepted drilling mud on our land. Luckily, we have only had one well in the last 5 years (and it was dry). Make them send the drilling mud back down some deep dry well they've drilled.
Depleted uranium disposal is taking on all kinds of nasty methods, and at what cost?
7,059,429 Drilling assembly and method
6,978,850 Smart clutch
6,581,700 Formation cutting method and system
6,386,300 Formation cutting method and system
6,216,802 Gravity oriented directional drilling apparatus and method
4,428,108 Method of forming encapsulated depleted uranium oil field tubular member
4,310,059 Composite heavy metal drill collar
4,278,138 Composite heavy metal drill collar
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=0&f=S&l=50&TERM1=drill+collar&FIELD1=&co1=AND&TERM2=depleted+uranium&FIELD2=&d=PTXT
Could this help explain TSEs found in areas of western Canada? CWD in Saskatchewan and Alberta are all found in areas with alot of Oil and gas activity.
Patent 6,581,700 uses "solid material impactors made of DU, steel or ceramic, that have a mean diameter of at least 0.100 inches", that's not very large. These solid material impactors are added to drilling fluids. Are they removed? not likely, perhaps they are smashed to bits during the drilling process?
Either way, if the DU or tungsten ends up in the drilling fluids, which it must, it will be spread on the land with the drilling mud. Our cattle, sheep, horses, goats and our crops are going to take these metals up (especially when they are spread on grass and not incorporated into the cultivated soil). Clays will bind these metals more readily than sandy soils; and CWD is very common in areas or Saskatchewan and Alberta with sandy soil.
Ranchers, landowners, if you have drilling activity on your land and you take the drilling mud or get paid to take it, please at the very least - spread it on cultivated land and work it in. Even if there is no depleted uranium or tungsten in the drilling fluid, there is usually barium which is also toxic. As well, NORMS (naturally occurring radioactive materials) could be brought to the surface with the drilling mud.
Sorry guys but I do not trust this industry when they say the mud is safe. For several years now we have not accepted drilling mud on our land. Luckily, we have only had one well in the last 5 years (and it was dry). Make them send the drilling mud back down some deep dry well they've drilled.
Depleted uranium disposal is taking on all kinds of nasty methods, and at what cost?