Kodi ubwino ndi kuipa kwa madzi - potengera ndi mafuta - zochokera madzi pobowola?

First of all, both water-based and oil-base drilling fluids have advantages and disadvantages, and they adapt to different stratigraphic conditions. Therefore, there is no superior or inferior stratum, and it is impossible to arbitrarily say which one is the future development trend. API and IADC classify the drilling fluid system into nine categories, the first seven types are water-based drilling fluid, the eighth type is oil-based drilling fluid, and the last type is gas as the basic medium. Non-dispersive system, 2, dispersive system, 3, calcium treatment system, 4, polymer system, 5, low-solid system, 6, saturated brine system, 7, well completion fluid system, 8, oil-base drilling fluid system, 9, air, fog, foam and gas system.
Water-based drilling fluid has the advantages of low cost, simple configuration, treatment and maintenance, wide source of treating agent, multiple types available for selection, easy control of performance, etc., as well as good protective effect of oil and gas layer. Oil-base drilling fluid refers to the oil as the continuous phase drilling fluid. As early as the 1920s, crude oil was used as drilling fluid to avoid and reduce the occurrence of various complicated situations in drilling. However, it is found in practice that crude oil has the following disadvantages: small shear force, difficult to suspend barite, large filtration loss, and volatile components in crude oil can easily cause fire. As a result, it gradually developed into two oil-base drilling fluids with diesel as continuous phase -- all-oil drilling fluid and water-in-oil emulsion drilling fluid. In total oil drilling fluid, water is useless component, its water content should not exceed 7%. In oil-ladle water drilling fluid, water is distributed evenly in diesel oil as the necessary component, and its water content is generally 10%~60%.
Poyerekeza ndi madzi ofotokoza pobowola madzimadzi, mungathe mafuta m'munsi pobowola madzimadzi ndi mkulu kutentha kukana, kukana kuti mchere, calcium kuipitsidwa, osati zitsime zokumba zogwiritsa khoma bata, lubricity zabwino hydrocarbon mosungiramo kuwonongeka n'chochepa kwambiri, ndipo ndi ubwino, koma tsopano wasanduka kubowola kovuta mkulu kutentha akuya, mkulu ngodya anawasiya ndi yopingasa Wells ndi njira zofunika mapangidwe zosiyanasiyana zovuta, ndipo akhoza ankagwiritsa ntchito zoonera madzimadzi, perforating akamaliza madzimadzi, workover madzimadzi ndi madzimadzi pagalimoto mtima. Komabe, ntchito yokonza mtengo wa mafuta m'munsi pobowola madzimadzi ndi apamwamba kuposa kuti madzi m'munsi pobowola madzimadzi, ndipo pamene ntchito, nthawi zambiri chifukwa zimakhudza kwambiri pa chilengedwe zachilengedwe pafupi ndi chitsimecho malo, ndi makina pobowola liwiro zambiri m'munsi kuposa kuti madzi m'munsi pobowola madzimadzi. Kuipa awa kwambiri kuchepetsa kufala ndi kugwiritsa ntchito madzi mafuta m'munsi pobowola. Kuti kusintha mlingo kuboola otsika gel osakaniza mafuta phukusi madzi emulsion pobowola madzimadzi anali chimagwiritsidwa ntchito kuyambira cha m'ma 1970. Pofuna kuteteza chilengedwe zachilengedwe kusintha zosowa za kuboola zikawonongeka, kuyambira 1980s oyambirira, otsika-poizoni mafuta madzi emulsion pobowola madzimadzi ndi mafuta mchere monga mafuta m'munsi pang'onopang'ono atchukitsa. Pakali pano, zonse mafuta pobowola madzimadzi lakhala likugwiritsidwa ntchito zochepa, kotero ambiri olankhula, mafuta-m'munsi pobowola madzimadzi amatanthauza madzi mu mafuta emulsion pobowola madzimadzi ndi mafuta dizilo kapena otsika-poizoni mchere mafuta (mafuta woyera) monga mosalekeza gawo.
cdf


Post nthawi: Aug-09-2018

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