Oil-gas well oil pipe sand removing device and method

A technology for well tubing and sand cleaning, which is used in earth-moving drilling, wellbore/well components, etc., can solve the problems of safety and environmental protection risks, large operation area, large investment, etc., and achieves simple construction operation, reasonable structure and low investment. Effect

Active Publication Date: 2021-01-22
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an oil and gas well tubing sand cleaning device and sand cleaning method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the existing general cleaning problems. Sand devices and methods have the problems of large investment, long time consumption, large operating area, safety and environmental protection risks, and affect the original well conditions of gas wells to varying degrees, and it is difficult to guarantee the normal production of subsequent gas wells

Method used

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  • Oil-gas well oil pipe sand removing device and method
  • Oil-gas well oil pipe sand removing device and method
  • Oil-gas well oil pipe sand removing device and method

Examples

Experimental program
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Embodiment 1

[0030] Embodiment one: as attached figure 1 , 2 , 3, 4, and 5, the oil and gas well tubing sand cleaning device includes a mandrel 1, a sheath 2, a sand taking barrel 3 and a sand fishing cup 4, and the sand taking barrel 3 is a hollow tubular structure arranged vertically, and the sand taking The inner side of the upper part of the cylinder 3 is provided with an inner ring groove 9, and the inner wall of the sand extraction cylinder 3 is provided with a spiral groove 10 whose upper end communicates with the inner ring groove 9 and the lower end extends to the lower end surface of the sand extraction cylinder 3, and the lower end surface of the sand extraction cylinder 3 is along the circumference. Several gnawing teeth 8 cutting along the helical direction of the spiral groove 10 are evenly distributed, and a sand-picking cup 4 with a cylindrical structure with an open upper end and a closed lower end is set inside the sand-taking cylinder 3. There are several earrings 5 ​​w...

Embodiment 2

[0043] Embodiment two: as attached figure 1 , 5 Shown, a kind of sand cleaning method using above-mentioned oil and gas well tubing sand cleaning device comprises the following steps:

[0044] The first step is to detect the position of sand accumulation in the production string by using the stereotype device with the steel wire well testing vehicle, and calculate the amount of sand accumulation in the tubing according to the structure of the production string of the oil and gas well, so as to determine the number of operations;

[0045] The second step is to connect the upper part of the mandrel 1 of the oil and gas well tubing sand removal device with the corresponding weighting device, the upper part of the weighting device is connected to the wire rope cap, and the wire rope passes through the simple blowout preventer at the wellhead to connect with the wire rope cap;

[0046] The third step is to close the oil and gas well production string and connect the simple blowout...

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Abstract

The invention relates to the technical field of oil-gas field development and production and oil-gas well production string accumulated sand cleaning operation, in particular to an oil-gas well oil pipe sand cleaning device and method. The oil-gas well oil pipe sand cleaning device comprises a core shaft, a protective sleeve, a sand taking cylinder and a sand bailing cup; and the method comprisesthe following steps: 1, the sand accumulation position in the production string is detected by adopting a lead printing device through a steel wire well testing vehicle, and the sand accumulation amount in the oil pipe is calculated according to the structure of the oil-gas well production string so as to determine the operation times. The oil-gas well oil pipe sand cleaning device is reasonable and compact in structure, the core shaft is moved up and down repeatedly, a sliding block reciprocates in a rail groove and moves along the circumference, then the protective sleeve and the sand takingcylinder move along the circumference, accumulated sand cut by bite teeth is guided into a spiral groove to move upwards and finally falls into the sand bailing cup, a necessary production channel isprovided for normal production of an oil-gas well, the sand removal operation without moving the string is realized, the investment is low, the construction operation is simple, the original well condition of the gas well cannot be influenced, and the oil-gas well oil pipe sand cleaning device has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development and production and oil and gas well production pipe column sand cleaning operations, and relates to a sand cleaning device and a sand cleaning method for oil and gas well tubing. Background technique [0002] In the production process of oil and gas wells, with the continuous shortage of formation pressure and fracturing, problems such as sand production and scaling often occur, especially sand production seriously affects the normal production of oil and gas wells, because with the sand production in the production tubing Continuous accumulation will block the production channels, resulting in the failure of oil and gas wells to produce, which seriously restricts the normal production of oil and gas wells. The general sand cleaning methods are coiled tubing sand washing or string workover. These two processes are not only expensive, time-consuming, and The operation area is ...

Claims

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Application Information

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IPC IPC(8): E21B27/00
CPCE21B27/00
Inventor 李勇龙张贵仪韩长武伊明高本文刘雄辉郭瑞祥向欣赵辉东王坚
Owner BC P INC CHINA NAT PETROLEUM CORP
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