METHOD OF MEASURING VARIATION OF BOTTOM-HOLE PRESSURE IN ROUND-TIP OPERATIONS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 exploration wells and can be used in drilling for oil and gas. goal is to improve the accuracy of u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0.drop or raise the column pipes in a well filled boat with u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 change of drilling fluid in a borehole during descent pipe before the overfilling or prior to the u043fu0430u0434u0435u043du0438u00a0 u0443u0440u043eu0432u043du00a0 solution lifting pipe v and the wells without taking into account the amount of drilling pipes and the solution to them Vu0441u043au0432. and the change of bottom hole u0434u0430u0432u043bu0435u043du0438u00a0 in u0441u043fu0443u0441u043au043eu043fu043eu0434u044au0435u043cu043du044bu0445 u043eu043fu0435u0440u0430u0446u0438u00a0u0445 r u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 by the formula r = 2k.v / Vu0441u043au0432, where k is the three-dimensional u0441u0436u0430u0442u0438u00a0 (u0440u0430u0441u0442u00a0u0436u0435u043du0438u00a0) drilling fluids.