Study On Type Of Strong Blocking Drilling Fluid

With the mines to mining, ore reserves to maintain reduced to extend the mine life, to carry out prospecting work in deep mines. This China is now the status of exploration and development of mineral resources, mineral exploration and development but also on a higher technical requirement.In the deep prospecting process, we often encounter hard and brittle formations, lost circulation prone to kick fractured, gap formation, to Prone to collapse and block out the mud hole diameter deformed shale. Differential sticking during drilling, drilling fluid loss, and (or) wall collapse and the collapse of complex issues such as formation damage problems still more prominent. If you do not pay enough attention to, will result in a series of underground Accidents, increase the cost of exploration and development, and even the possibility of loss of mineral development.This film is based drilling fluid system, no drilling fluid system penetration, designers, and micro-foam drilling fluid drilling fluid system body System, developed for deep exploration of a strong blocking drilling fluid system. And block-based drilling fluid system of strong test side Method, the mechanism of certain research. And finally give a complete system of strong blocking drilling fluid formulation can form low-density Degree of high-density drilling mud may also be formed.This results from the film and cost aspects of the analysis, choose the MEG as a film-forming agent; and no penetration at home and abroad based on past drilling Fluid studies, driven fluid loss agent, sealing material can be deformation, anti-collapse lubricant selection of commonly used chemical materials, and through No penetration through orthogonal treatment agent is given the basic recipe; Finally, the analysis of the federation and the plugging material deleted after the election, the Optimization of solid material block. The final combination of the three, strong blocking drilling fluid system is given the formula.Because deep prospecting process, the density of the window will have different needs of different drilling fluid density. So for closure has been of the strong drilling fluid to improve. Micro-foam drilling fluid system according to the reference, we study the structure of the drilling fluid containing the velvet pouch, adaptive the bottom of the window for low-density situation. The strong block in the original drilling fluid system, adding heavier material, suitable for high-need Formation density of drilling fluid situation.Finally, we strongly plug the whole salt-based drilling fluid system performance, anti-calcium, resistance-temperature performance, and anti-oil pollution, acid and alkali resistant Capacity, anti-pollution ability clay experimental analysis, given the strong ability to adapt to block drilling fluid.