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FHW001井是新疆油田第一口浅层稠油水平井,也是我国最浅的一口水平井。由于井浅,地层成岩性差,给钻水平井带来了许多的困难。本文主要介绍了钻井液完井液依据不同的地质特点,选用了 KCl——聚磺屏蔽钻井液。室内研究及现场实践表明,该体系抑制能力强,防塌、润滑性能好,性能便于调整维护,形成的滤饼致密、润滑。经封堵适壁,提高了滤饼的承压能力。起到了防塌、防漏的目的。并验证了钻浅层水平井时,在层流条件下,只要动切力、触变性、动塑比和 n 值调整得合适,再配合一定的工程措施,对清洁井眼、保证井下安全施工是可行的。该体系完全能满足钻风城地区的浅层稠油水平井要求。
Well FHW001 is the first shallow heavy oil horizontal well in Xinjiang Oilfield and also the shallowest horizontal well in China. Due to the shallowness of the well, the stratigraphic diagenesis is poor, which brings many difficulties to drilling horizontal wells. This paper mainly introduced drilling fluid completion fluid according to different geological features, selected KCl - polysulfonic shield drilling fluid. Indoor research and field practice show that the system has strong inhibition ability, anti-collapse, good lubricating performance, easy adjustment and maintenance, and compact and lubricated filter cake. After blocking the wall, improve the pressure bearing capacity of the cake. Played anti-collapse, leak-proof purpose. When drilling shallow horizontal well, under the condition of laminar flow, as long as the dynamic shear force, thixotropy, dynamic plastic ratio and n value are adjusted properly, together with certain engineering measures, It works. The system can fully meet the requirements of shallow heavy oil horizontal wells in the area of the city of Windwind.