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Thick oil paraffin removal device for screw pump electric heating oil pipe

A technology of screw pumps and oil pipes, which is applied in the direction of pump devices, components of pumping devices for elastic fluids, pumps, etc., and can solve problems such as limited promotion and inability to solve insulation problems

Inactive Publication Date: 2009-11-18
金连家
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inability to solve the insulation problem between the downhole pipe string and the surface equipment, it was unable to produce
Therefore, the promotion of screw pump oil production in heavy oil areas is greatly restricted.

Method used

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  • Thick oil paraffin removal device for screw pump electric heating oil pipe
  • Thick oil paraffin removal device for screw pump electric heating oil pipe
  • Thick oil paraffin removal device for screw pump electric heating oil pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The structure of the present invention is as shown in the accompanying drawings: an electric control cabinet 1 is arranged on the ground. The oil pipe 4 is provided with an insulating nipple 3 . The electric control cabinet is connected to the oil pipe at the lower part of the insulating pup through the cable 2. There is a connector 5 between the lower part of the oil pipe and the casing 6 . The bushing passes through the connector as a current loop. An insulating centralizer 12 is provided between the oil pipe and the casing pipe. At the bottom of the oil pipe is a screw pump 14 . Rotating rod 7 is arranged on the screw pump, and an insulating polished rod 8 is arranged at the top of the rotating rod. An insulating sleeve 21 is provided on the outside of the polished rod. The insulating sleeve is made of nylon or fiberglass. There is a plane 19 around the middle section of the polished rod. This section of the polished rod with the plane is a tetrahedron. An in...

Embodiment 2

[0022] The structure of the present invention is as shown in the accompanying drawings: an electric control cabinet 1 is arranged on the ground. The oil pipe 4 is provided with an insulating nipple 3 . The electric control cabinet is connected to the oil pipe at the lower part of the insulating pup through the cable 2. There is a connector 5 between the lower part of the oil pipe and the casing 6 . The bushing passes through the connector as a current loop. An insulating centralizer 12 is provided between the oil pipe and the casing pipe. At the bottom of the oil pipe is a screw pump 14 . Rotating rod 7 is arranged on the screw pump, and an insulating polished rod 8 is arranged at the top of the rotating rod. An insulating sleeve 21 is provided on the outside of the polished rod. The insulating sleeve is made of nylon or fiberglass. There is a plane 19 around the middle section of the polished rod. The smooth rod with plane in this section is a hexahedron. An insulatin...

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Abstract

The invention discloses a thick oil paraffin removal device for a screw pump electric heating oil pipe, which is a thick oil paraffin removal device for an electric heating oil pipe of an oil well, in particular an electro-thermal paraffin removal device used in a screw pump oil well. An electric control cabinet is placed on the ground surface. The oil pipe is provided with an insulating short section. The electric control cabinet is connected to the oil pipe on the lower part of the insulating short section through a cable. A communicating device is arranged between the lower part of the oil pipe and a sleeve pipe. The sleeve pipe serves as a current loop through the communicating device. The topmost part of a rotating rod is provided with an insulating polished rod. A driving head is provided with an insulating square clamping seat. The working method of the paraffin removal device comprises the following steps: turning on a power switch of the oil pipe of the electric control cabinet; electrifying and heating the oil pipe on the lower part of the insulating short section; dissolving thick oil; and dissolving paraffin scales adhered to the inner wall of the oil pipe to ensure that the screw pump works normally. Because of an insulating centralizer, the insulating short section, the insulating polished rod and the insulating square clamping seat, land-based facilities are insulated with underground pipe columns and are uncharged. Thus, the screw pump oil well can be applied in thick oil areas.

Description

technical field [0001] The invention discloses an electric heating oil pipe heavy oil wax removal device for an oil well, in particular an electric heating wax removal device used in a screw pump oil well. Background technique [0002] At present, in oil field oil production operations, oil production methods such as pumping units and screw pumps are usually used. The use of screw pumps for oil production has been gradually promoted due to its low cost and high efficiency. But the screw pump oil well has its limitations. If operating in the heavy oil area, there are many specific problems to be solved. For example, the pump barrel of the screw pump is connected to the bottom of the oil pipe. Due to the high wax content and viscosity of the heavy oil, the rotation resistance of the rotary rod increases, resulting in insufficient lifting force and unable to produce. To solve this problem, the oil pipe must be energized and heated to dilute the heavy oil and melt the wax, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/00F04D3/02F04D13/10E21B43/00
Inventor 金连家
Owner 金连家
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