In last century, the cleaning water together with mudstone cuttings in the drilling process was used as natural drilling fluids. Later the drilling fluid chemical agent was developed as a more stable drilling fluid to ensure the safety of drilling. The Polyacrylamide (PAM) was begun to be used in drilling fluids in 1960’, while this approach has led to a significant change of the development of drilling fluids. Polyacrylamide not only increased drilling speed greatly, but also promoted the type of drilling fluid treatment agent from the past to the synthesis from natural polymers.
The main functions of drilling fluid are: cleaning the bottom, carrying cuttings; cooling and lubrication drill and drill string; the formation of mud cake to protect the wall; control and balance formation pressure; cuttings and aggravating agents; in the ground to remove debris; to provide information about the drilling formation and so on. Nowadays, polyacrylamide (PAM) has played an important role in drilling fluid loss, flocculation, shale inhibition, dilution, plugging and so on. The solid phase in the drilling fluid is one of the key factors affecting drilling speed and cost. Along with the introduction of polyacrylamide (PAM) into drilling fluid and the application of high-quality drilling fluids without dispersing low-solid-phase polymers have greatly increased the drilling speed and become one of the four important technologies in the contemporary drilling industry.
Through working with field engineers and many testing in oilfield, Sinofloc engineers found our polyacrylamide (PAM) can make the cuttings and inferior soils in the drilling fluid be in non-dispersed flocculation state, so as to use mechanical solid control equipment to remove them, so as to solve the dispersion of drill cuttings in the dispersed drilling fluid system well, Liquid accumulation problem. Sinofloc products could not only improve the penetration rate, but also reduce the drilling process of many complex situations, better protection of the oil and gas layers and reducing the cost of drilling.
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