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

An underwater wellhead and electric submersible pump technology, which is applied in wellbore/well components, measurement, construction, etc., can solve problems such as the failure of the electric pump string to use the underwater Christmas tree for emergency relief, and the damage to the cable of the semi-submersible drilling platform. , to achieve huge economic and social benefits, good evaluation and development effects

Inactive Publication Date: 2011-07-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 damag

Method used

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

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Embodiment Construction

[0023] Such as figure 1 As shown, it is an embodiment of the electric submersible pump test pipe string under the underwater wellhead condition of the present invention, including a flow head 1, an oil pipe 2, a cable bridge 3, an adjustment nipple 4, Hanger 5, tubing 6, circulation valve 7, circulation valve 8, packer 9, adjustable nipple 11, one-way shear valve 12, electric submersible pump 14, separator 15, pump suction port 16, protector 17 , motor 18, pump working condition monitoring 19, pressure gauge support cylinder 20, oil pipe 21, plug with hole 22, cable 10 is introduced into motor 18 through cable bridge 3, hanger 5, and packer 9.

[0024] see figure 2 , image 3 and Figure 4 , in order to make the cable 10 of the electric submersible pump test pipe string pass through the universal blowout preventer 23 below the water surface smoothly, and not be stuck by the shear ram 24, so as to prevent the cables from being protected when the universal blowout preventer ...

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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...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/008
Inventor 唐海雄张俊斌林海春彭作如王跃曾
Owner CHINA NAT OFFSHORE OIL CORP
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