tory burch River of the upper strata of the treatm

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Upper strata Tahe sticking treatment measures

Drill meet resistance card is a mechanical resistance of the resistance, not by increasing fluid lubrication lubrication to resolve. Thus, the bit length of the uplink unit blowing down from the wall on \sufficient dose of high molecular weight poly-coated units drilling fluid in the coated material agent that upon the formation of cuttings in the package to be agents of the \cuttings coated surface hydration layer. This package is an important role in the hydration layer: ④ slow clay of the chemical hydration, swelling and dispersion; ② prevent the spread of physical debris; ③ stop between cuttings,[link widoczny dla zalogowanych], cuttings and the bond between the wall to prevent debris in the return process due to friction, impact, erosion caused by mechanical grinding and dispersion. 2. large displacement large displacement loop drilling fluid circulation is very important projects measures in the displacement and the pump pressure to ensure that when the displacement can not have both. large displacement, high return rate on solving the problem underground resistance played an important role cards: ① reduce cuttings back to the ground from the bottom of the time, thus reducing hole for a long time immersed in the fluid caused by the clay hydration, swelling and dispersion and reduce cuttings and a long residence time caused by the mechanical fragmentation and dispersion, so as to maintain just drill cuttings into the shape of the benefit by solids control equipment; ② in the same penetration rate, the displacement of the more so, the lower the concentration of borehole cuttings; ③ improve the delivery ratio of debris to ensure the hole cleaning; ④ displacement of a large hole drilled in the drill the moment,[link widoczny dla zalogowanych], easy to erosion of soft strata, forming a large hole, sticking to reduce tripping. For P444.5mm hole,[link widoczny dla zalogowanych], the displacement can not be less than the 50I / s, 31lmm borehole displacement can not be less than 4OI / s 3.. efficient solid control, to ensure clean drilling fluid solids control equipment to improve the removal efficiency of cuttings, the foundation is to ensure the normal underground, and ground the efficient operation of solids control equipment, maximize clear unwanted solid phase, to ensure human well polymer drilling fluid cleaning is to achieve a \compete well with the capsule volume in 2002 cattle younger brother of three four l9 solid control equipment, efficient use, if necessary, Qingtao circulation tank, to ensure that drilling fluid cleaning, make sure mine is normal. 4. to strengthen the work of short-range short-tripping from under the The actual significance of drilling: ① in the wall on the accumulation of \repeated scraping of the new wall tension, compression, friction, the wall can be formed on the smooth,[link widoczny dla zalogowanych], dense new cake, mud cake adhesion to the new greatly reduced and difficult to re-adhesion of cuttings; mud cake (including the cake) significantly reduced the permeability to prevent or reduce the transmission of pressure to make difficult to re-form a thick wall of false cake (just like the casing wall as the cake will not form). in the high penetration rate, short 300m each drill from the drill 1; drilling rate is slow, if not 24h footage 300m, a day short tripping 1. River of the upper limit of the well formation, generally a short tripping times, resistance card disappeared. through the implementation of the \Well seriously in the implementation of the \. know I | upper strata of the geological features of the formation of sticking to objective reasons, which, although not completely eradicate resistance card, but you can take all possible measures to reduce the severity of resistance cards. 2. to resolve the upper well section block formation card, you need to work in various synergies. adhere to the upper strata deter the card's four too measures \a good solution to the problem sticking from under the drill. References 1 Yin Li, orange, Wang Shu Qi tower operation area well water pulley mud technology. Drilling and completion fluids, 1991; 8 (2): About 33 ~ 37 Permanence, engineer,[link widoczny dla zalogowanych], graduated in 1983, the school leek oil fields dry bearing spike of Applied Chemistry, Temple leek, cut surgery is now held in the mud Division Drilling Company . Address: Xinjiang Korla City, Zhuo held drilling company in the surgery; Postal Code 841000} Phone Pitt (0996) 2174784. (Received 2001-10-24) HGF = 023A27} Maple Series Li Xiaolan)
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