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Lubricating grease paraffin and scale control oil production strip and application thereof

A technology of lubricating grease and oil production pipe, applied in drilling pipe, casing, earthwork drilling and other directions, can solve the problem of short service life of pipe and rod, affecting the normal production of oil well, and preventing wax or scale preventing device from both preventing wax at the same time. And anti-scaling and other issues, to achieve strong hydrophilic and oil repellency, prolong life and production efficiency, maintain the effect of normal production

Active Publication Date: 2016-09-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that most of the existing anti-wax or anti-scaling devices cannot simultaneously prevent wax and anti-scaling, resulting in short service life of pipes and rods and affecting the normal production of oil wells

Method used

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  • Lubricating grease paraffin and scale control oil production strip and application thereof
  • Lubricating grease paraffin and scale control oil production strip and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In order to solve the problem that most of the existing anti-wax or anti-scaling devices cannot simultaneously prevent wax and anti-scaling, resulting in a short service life of pipes and rods and affecting the normal production of oil wells, this embodiment provides such figure 1 The shown lubricating grease anti-wax and anti-scaling oil production string includes oil pipe 5 and oil sucker rod 6 in the oil pipe 5, and a oil pipe nipple 4 with a pipe medicine chamber 3 is installed under each oil pipe 5, The drug cavity 3 of the tube body is set on the short joint 4 of the tubing;

[0024] Below each sucker rod 6 is installed a sucker rod sub-section 1 with a rod drug cavity 2, and the rod drug cavity 2 is sleeved on the sucker rod sub-joint 1;

[0025] The tube drug cavity 3 and the rod drug cavity 2 have the same structure, both of which are annular cylinders closed at both ends, and the annular space is filled with solid grease. The inner wall of the tube drug cavity...

Embodiment 2

[0030] In order to solve the problem that most of the existing anti-wax or anti-scaling devices cannot simultaneously prevent wax and anti-scaling, resulting in a short service life of pipes and rods and affecting the normal production of oil wells, this embodiment provides such figure 1 The shown lubricating grease anti-wax and anti-scaling oil production string includes oil pipe 5 and oil sucker rod 6 in the oil pipe 5, and a oil pipe nipple 4 with a pipe medicine chamber 3 is installed under each oil pipe 5, The drug cavity 3 of the tube body is set on the short joint 4 of the tubing;

[0031] Below each sucker rod 6 is installed a sucker rod sub-section 1 with a rod drug cavity 2, and the rod drug cavity 2 is sleeved on the sucker rod sub-joint 1;

[0032] The tube drug cavity 3 and the rod drug cavity 2 have the same structure, both of which are annular cylinders closed at both ends, and the annular space is filled with solid grease. The inner wall of the tube drug cavity...

Embodiment 3

[0036] In order to solve the problem that most of the existing anti-wax or anti-scaling devices cannot simultaneously prevent wax and anti-scaling, resulting in a short service life of pipes and rods and affecting the normal production of oil wells, this embodiment provides such figure 1 The shown lubricating grease anti-wax and anti-scaling oil production string includes oil pipe 5 and oil sucker rod 6 in the oil pipe 5, and a oil pipe nipple 4 with a pipe medicine chamber 3 is installed under each oil pipe 5, The drug cavity 3 of the tube body is set on the short joint 4 of the tubing;

[0037] Below each sucker rod 6 is installed a sucker rod sub-section 1 with a rod drug cavity 2, and the rod drug cavity 2 is sleeved on the sucker rod sub-joint 1;

[0038] The tube drug cavity 3 and the rod drug cavity 2 have the same structure, both of which are annular cylinders closed at both ends, and the annular space is filled with solid grease. The inner wall of the tube drug cavity...

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Abstract

The invention provides a lubricating grease paraffin and scale control oil production strip and applications thereof. Through adding cured lubricating grease on a string, the lubricating grease having very strong lubricity and hydrophilic oleophobic property, in an up-down stroke operation process of a sucker rod with a pumping unit, the lubricating grease in a short section is continuously released, so wax and scale cannot adhere and bond in a tube or on the surface of a rod outer wall, so as to achieve effect of paraffin and scale control, thereby maintaining normal state production of an oil well, prolonging life of the tube and the rod, and improving production percentage.

Description

technical field [0001] The invention belongs to the technical field of anti-wax and anti-scaling of oil production pipe strings, and in particular relates to an anti-wax and anti-scaling oil production pipe string for lubricating grease. Background technique [0002] During the swabbing process of the existing oil production string, due to the difference in temperature between the formation and the wellbore, the waxy components in the crude oil are easily precipitated from the crude oil and condensed on the tubing wall during the upwelling of the wellbore to increase the load, or due to the temperature difference between the formation and the wellbore. The incompatibility of water and injection water will lead to fouling of the oil well pipe and rod pump, which will affect the normal production of the oil well. Most of the existing anti-wax or anti-scaling devices cannot simultaneously prevent wax and scale, resulting in a short service life of the pipe and rod. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B17/04
CPCE21B17/00E21B17/04
Inventor 石海霞赵振峰陆红军甘庆明雷宇樊松姚洋梁毅苏祖波郭靖
Owner PETROCHINA CO LTD
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