Published November 2009

Some problems of chisel works and ways of their solution

N.M.Aliyev

I.Y.Shireli

During drilling process of deep oil and gas wells with complicated geological conditions, a big preference is given to application of effective chemical reagents, supporting stability of the walls of holes and adjusting structural-mechanical, rheological features of drilling solutions. At the modern stage, when the economics of our republic is shifting into market relations, one of the reasons of low efficiency of drilling is a rise in price of imported traditional chemical reagents, weighting of drilling muds and absence of their substitutes in the local industry. In connection with it for drilling wells in the complicated conditions reagent Аbsheron-2Т which is worked out on the basis of the agrarian and industrial wastes it corresponds modern requirements and renders positive influence on parameters of drilling fluid. In various combinations between tannin - alkaline viscosity reducer with other reagents the multipurpose cheap reagent having the inhibitor properties is received. On the basis of WSP (water-soluble polymer) Stakrillat-1 low-molecular WSP Stakrillat -2 is worked out. On the basis of Stakrillat-2 have been developed highly inhibited polymeric and oil emulsion-polymeric fluids, adjusting structural-mechanical, rheological features of drilling solutions and providing stability of well walls. On the basis of diesel-alkaline waste of oil refining and latex BS-50 structures for isolation of absorbing intervals are worked out. Structurally-mechanical and rheophysical properties of the offered structures are studied.