Thick oil SAGD horizontal well real-time output monitoring-underground control implementation method

Abstract

The invention discloses a thick oil SAGD horizontal well output monitoring and well completion implementation method. The thick oil SAGD horizontal well output monitoring and well completion implementation method includes the following steps that data of an oil reservoir storage layer are collected and analyzed; the horizontal well segmented monitoring position and number are determined; a well geological and numerical simulation model is established; the ICD/FCD type is selected, and parameters of a flowing-in control well completion device are determined; the tracer agent dosage of all monitoring sections is determined; real-time underground monitoring is conducted according to segmented monitoring requirements; an oil producing/water producing section is calculated; the underground FCDregulating size and relevant parameters are analyzed; and underground output section control is implemented till the tracer agent monitoring designed life time is over. The thick oil SAGD horizontal well output monitoring and well completion implementation method has the beneficial effects that the prominent problems that traditional liquid production section monitoring work is long in operation period, high in operation cost, high in operation risk and not timely in liquid production section control are effectively solved.

Description

technical field [0001] The invention relates to the technical field of heavy oil development, in particular to a heavy oil SAGD horizontal well production monitoring interpretation and intelligent control integrated well completion implementation method. Background technique [0002] With the deepening of heavy oil / oil sands development, Steam Assisted Gravity Drainage (SAGD) technology has become one of the key technologies for the efficient development of heavy oil / oil sands. In 1981, Bulter proposed the SAGD technology for the first time. This technology uses dual horizontal wells to exploit heavy oil / oil sands. The basic principle is to use steam from heat conduction and heat convection sources to heat formation crude oil, and the steam expands vertically and laterally in the reservoir to heat the formation. Crude oil, heated crude oil and condensate flow by gravity to the production wells below the oil layer to be extracted. In order to make the SAGD steam chamber expa...

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Problems solved by technology

[0003] The two processes of traditional downhole inflow profile monitoring and control are independent of each other, which leads to problems such as long period of interpretation and testing of fluid production profile, high cost, high operational risk, and untimely control of fluid production profile, which seriously affects heavy oil SAGD horizontal wells. development effect

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