Multiphase mixed transportation pipeline dangerous flow pattern early warning and eliminating system and working method thereof
A technology that eliminates systems and flow patterns. It is used in earth-moving drilling, surveying, wellbore/well components, etc. It can solve the problems of tedious post-maintenance and expensive, achieve high practicability and convenience, improve measurement accuracy, and ensure safety. The effect of efficient operation
Pending Publication Date: 2022-01-04
XI AN JIAOTONG UNIV
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Problems solved by technology
When selecting the above pressure differential signal for flow pattern discrimination, it is often necessary to arrange sensors underwater, which requires expensive underwater equipment and cumbersome post-maintenance
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[0030] The present invention will be described in further detail below in conjunction with accompanying drawing, and its content is explanation of the present invention rather than limitation:
[0031] Such as figure 1 , the multi-phase mixed pipeline dangerous flow early warning and elimination system of the present invention comprises a first differential pressure sensor 1, a second differential pressure sensor 2, a pressure sensor 3, an automatic control valve 4 and a signal processing and control system 5; the first The differential pressure sensor 1 is set at the top of the standpipe, the second differential pressure sensor 2 is set between the outlet of the standpipe and the inlet of the gas-liquid separator, the pressure sensor 3 is set at the outlet of the top of the standpipe, the first differential pressure sensor 1, the second differential pressure sensor The difference sensor 2 and the pressure sensor 3 are both located on the water surface part of the gathering-st...
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The invention discloses a multiphase mixed transportation pipeline dangerous flow pattern early warning and eliminating system and a working method thereof, and belongs to the technical field of petroleum engineering multi-phase flow monitoring. A first differential pressure sensor is arranged between an outlet of a vertical pipe and an inlet of a gas-liquid separator, a second differential pressure sensor is arranged at the top of the vertical pipe, a pressure sensor is arranged at a top outlet of the vertical pipe, and the first differential pressure sensor, the second differential pressure sensor and the pressure sensor are all located on the water surface part of a gathering and transportation-vertical pipe system; an automatic control valve is arranged on a horizontal pipe section between the top outlet of the vertical pipe and the gas-liquid separator; and the first differential pressure sensor, the second differential pressure sensor, the pressure sensor and the automatic control valve are correspondingly connected with a signal processing and control system. According to the invention, the flow pattern of the multiphase flow can be rapidly identified, when the harmful flow pattern is identified, the harmful flow pattern can be timely eliminated, the flow safety is ensured, and the whole system is convenient to install and maintain.
Description
technical field [0001] The invention belongs to the technical field of multiphase flow monitoring in petroleum engineering, and in particular relates to an early warning and elimination system for dangerous flow patterns of multiphase mixed transportation pipelines and a working method thereof. Background technique [0002] In the exploitation of oil and gas fields in the offshore oil industry, a gathering riser system is usually used to transport oil and gas products from underwater to an above-water processing platform. The multiphase mixed transportation process in the gathering riser system is often accompanied by a variety of flow patterns, especially in the middle and late stages of oil and gas field development, when the gas-liquid flow rate is low, it will produce a long liquid plug and alternate gas-liquid outflow. The severe intermittent flow, called severe slug flow hazard flow pattern. Severe slug flow will cause severe fluctuations in system pressure and standp...
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Patent Timeline
Login to View More IPC IPC(8): E21B47/00E21B47/06E21B47/12E21B47/13E21B34/04E21B34/06
CPCE21B47/06E21B47/00E21B47/12E21B47/13E21B34/045E21B34/066
Inventor 郭烈锦徐强黄博赵向远刘威志于海洋曹业奇
Owner XI AN JIAOTONG UNIV