RU2003107823A - METHOD FOR DETERMINING PRESSURE PROFILES IN WELLS, WELL LINE AND PIPELINES AND APPLICATION OF SUCH METHOD - Google Patents

METHOD FOR DETERMINING PRESSURE PROFILES IN WELLS, WELL LINE AND PIPELINES AND APPLICATION OF SUCH METHOD

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Publication number
RU2003107823A
RU2003107823A RU2003107823/03A RU2003107823A RU2003107823A RU 2003107823 A RU2003107823 A RU 2003107823A RU 2003107823/03 A RU2003107823/03 A RU 2003107823/03A RU 2003107823 A RU2003107823 A RU 2003107823A RU 2003107823 A RU2003107823 A RU 2003107823A
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RU
Russia
Prior art keywords
application
pipeline
pressure
flow
wellbore
Prior art date
Application number
RU2003107823/03A
Other languages
Russian (ru)
Other versions
RU2263210C2 (en
Inventor
Йон Стейнар Гудмундссон
Original Assignee
Йон Стейнар Гудмундссон
Filing date
Publication date
Application filed by Йон Стейнар Гудмундссон filed Critical Йон Стейнар Гудмундссон
Priority to RU2003107823/03A priority Critical patent/RU2263210C2/en
Priority claimed from RU2003107823/03A external-priority patent/RU2263210C2/en
Publication of RU2003107823A publication Critical patent/RU2003107823A/en
Application granted granted Critical
Publication of RU2263210C2 publication Critical patent/RU2263210C2/en

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Claims (12)

1. Способ определения профилей давления в стволах скважин, выкидных линиях и трубопроводах, несущих однофазные и многофазные флюиды, отличающийся тем, что поток флюида временно перекрывают, полностью или частично, быстродействующей задвижкой и непрерывно регистрируют давление в точке, находящейся на небольшом расстоянии от задвижки по направлению против течения потока, используют соотношения, известные из формулы Жуковского1. A method for determining pressure profiles in wellbores, flow lines and pipelines carrying single-phase and multiphase fluids, characterized in that the fluid flow is temporarily blocked, in whole or in part, by a quick-acting valve and continuously records pressure at a point located at a small distance from the valve by direction against the flow, use the relations known from the Zhukovsky formula Δρа=ρua,Δρ a = ρua, где ρ (кг/м3) - плотность флюида, u (м/с) - скорость движения флюида, а - скорость звука во флюиде, для оценки величины гидравлического удара и используют соотношения, известные из уравнения Дарси-Вейсбахаwhere ρ (kg / m 3 ) is the fluid density, u (m / s) is the fluid velocity, and is the speed of sound in the fluid to estimate the magnitude of the hydraulic shock and use the relations known from the Darcy-Weisbach equation Δρf=(f/2)(ΔL/d)u2,Δρ f = (f / 2) (ΔL / d) u 2 , где f (безразмерная величина) - коэффициент трения, L (м) - длина трубы, d (м) - диаметр трубы, ρ (кг/м3) - плотность флюида, u (м/сек) - скорость флюида, для определения потерь давления на трение, таким образом получая временную диаграмму изменения давления в стволе скважины, выкидной линии или трубопроводе.where f (dimensionless quantity) is the friction coefficient, L (m) is the pipe length, d (m) is the pipe diameter, ρ (kg / m 3 ) is the fluid density, u (m / s) is the fluid velocity, to determine the loss friction pressure, thus obtaining a time diagram of pressure changes in the wellbore, flow line or pipeline. 2. Способ по п.1, отличающийся тем, что из указанной временной диаграммы и оценки скорости звука в реальном флюиде получают диаграмму изменения давления в зависимости от расстояния, используя формулу2. The method according to claim 1, characterized in that from the indicated time diagram and the estimation of the speed of sound in a real fluid, a diagram of pressure change versus distance is obtained, using the formula ΔL=0,5aΔtΔL = 0.5aΔt для установления зависимости между временем (Δt) и расстоянием (ΔL).to establish the relationship between time (Δt) and distance (ΔL). 3. Способ по п.2, отличающийся тем, что оценку скорости звука получают на основе времени между резкими изменениями давления на временной диаграмме, вызываемыми оборудованием, изменением площади сечения потока и другими подобными местами с известным положением вдоль ствола скважины, выкидной линии или трубопровода.3. The method according to claim 2, characterized in that the speed of sound is estimated based on the time between sudden changes in pressure in the time diagram caused by equipment, changes in the cross-sectional area of the flow and other similar places with a known position along the wellbore, flow line or pipeline. 4. Способ по п.2, отличающийся тем, что оценку скорости звука получают на основе измерения временных диаграмм по меньшей мере в двух различных местах вдоль трубопровода и сравнения этих временных диаграмм.4. The method according to claim 2, characterized in that an estimate of the speed of sound is obtained on the basis of measuring time charts in at least two different places along the pipeline and comparing these time charts. 5. Способ по п.2, используемый для получения комбинированной диаграммы температуры и давления в скважине, при котором диаграмму температуры в зависимости от глубины в стволе скважины измеряют с использованием оптического волокна или подобного ему средства.5. The method according to claim 2, used to obtain a combined diagram of temperature and pressure in the well, in which the temperature diagram depending on the depth in the wellbore is measured using an optical fiber or similar means. 6. Применение способа по п.1 для обнаружения и локализации притока в стволе скважины, выкидной линии или трубопроводе.6. The application of the method according to claim 1 for detecting and localizing the inflow in the wellbore, flow line or pipeline. 7. Применение способа по п.1 для обнаружения и локализации таких дефектов выкидных линий, как смятие.7. The application of the method according to claim 1 for the detection and localization of defects in flow lines, such as crushing. 8. Применение способа по п.1 для определения эффективного диаметра ствола скважины, выкидной линии или трубопровода в различных местах.8. The application of the method according to claim 1 for determining the effective diameter of the wellbore, flow line or pipeline in various places. 9. Применение способа по п.1 для обнаружения и локализации отложений, таких как гидраты, твердые углеводороды, асфальтены или песок.9. The application of the method according to claim 1 for the detection and localization of deposits, such as hydrates, solid hydrocarbons, asphaltenes or sand. 10. Применение способа по п.1 для обнаружения и локализации таких дефектов, как утечки.10. The application of the method according to claim 1 for the detection and localization of defects such as leaks. 11. Применение способа по п.1 для определения того, какой или какие из нескольких газлифтных клапанов работают.11. The application of the method according to claim 1 for determining which or which of several gas lift valves are operating. 12. Применение способа по п.1 для локализации и количественного определения рабочих характеристик трубопроводного оборудования, используемого при добыче нефти и/или газа.12. The application of the method according to claim 1 for localization and quantitative determination of the operating characteristics of pipeline equipment used in the extraction of oil and / or gas.
RU2003107823/03A 2000-09-22 2000-09-22 Method for pressure profile determination in well bore, discharge lines and in pipelines and determination method implementation (variants) RU2263210C2 (en)

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RU2306416C1 (en) 2006-06-09 2007-09-20 Schlumberger Technology B.V., Method and device to determine fluid flow parameters
CN102272418B (en) * 2008-11-28 2014-09-17 普拉德研究及开发股份有限公司 Method for estimation of sagd process characteristics

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