Electric submersible pump testing pipe string used under condition of underwater wellhead

Abstract

The invention relates to an electric submersible pump testing pipe string used under the condition of underwater wellhead. The electric submersible pump testing pipe string is provided with an electric cable bridge, wherein the electric cable bridge, which is spindle-shaped, is positioned above a hanger of the electric submersible pump testing pipe string, connected with the hanger through an oil pipe, and provided with an oil gas channel used for oil gas to pass through and an electric cable traversing channel used for an electric cable to traverse. The electric submersible pump testing pipe string used under the condition of underwater wellhead is provided with the electric cable bridge, so that the electric cable of the electric submersible pump testing pipe string can pass through a blowout preventer below a water surface, and also enable the electric cable to avoid from being clamped and damaged by a clamping flashboard. The electric submersible pump testing pipe string provided by the invention can be suitable for mechanical recovery testing operation under the condition of underwater wellhead, can better evaluate and develop offshore oil fields, and has great economic benefits and social benefits.

Description

technical field [0001] The invention relates to an electric submersible pump test pipe string for oil and gas exploitation operations, and more specifically relates to an electric submersible pump test pipe string under underwater wellhead conditions. Background technique [0002] At present, all over the world, offshore oil and gas exploration and evaluation in water depths exceeding 100 meters are carried out by floating drilling devices, and the drilling and evaluation are completed by using underwater wellhead devices to establish closed circulation through underwater blowout preventers and risers. Oil and gas test evaluation work. However, the ESP test operation under the conditions of floating drilling unit, riser, subsea blowout preventer and subsea wellhead is very important for the evaluation of low pressure or normal pressure low flow formation, especially for deep water formation with long riser. Significance. [0003] However, there is no mature supporting tech...

AI Technical Summary

Problems solved by technology

[0007] The heave and displacement of the semi-submersible drilling platform used under underwater wellhead conditions will cause damage to the cable;

[0008] In case of typhoon, the electric pump string cannot use the underwater Christmas tree for emergency relief, etc.

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