... Core Brrels:Wireline triple tube core barrels are generally required in broken, fractured formations. They incorporate a third, split ... inner tube on base of wireline double tube core barrel. This can be pumped ... AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Core barrel assembly NQ, HQ, PQ, NQTT, HQWL, T2, T6, NMLC ...