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Testing method for sand discharging capacity of lifting pump

A technology for capacity testing and lifting pumps, applied in pump testing, pump control, non-variable pumps, etc., can solve problems such as unseen technical solutions

Active Publication Date: 2018-10-16
CNPC OFFSHORE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the sand discharge capacity of the lift pump, there is currently no test method and related content, so no corresponding technical proposal has been seen

Method used

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  • Testing method for sand discharging capacity of lifting pump
  • Testing method for sand discharging capacity of lifting pump
  • Testing method for sand discharging capacity of lifting pump

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Embodiment Construction

[0028] Below, the implementation of the technical solution will be further described in detail in conjunction with the accompanying drawings.

[0029] Those skilled in the art can understand that although the following description involves many technical details related to the embodiments of the present invention, this is only an example for illustrating the principle of the present invention, and does not imply any limitation. The present invention can be applied to occasions other than the technical details exemplified below, as long as they do not deviate from the principle and spirit of the present invention.

[0030] In addition, in order to avoid making the description in this manual limited to redundant, in the description in this manual, some technical details that can be obtained in the existing technical documents may be omitted, simplified, modified, etc. understandable to human beings, and this does not affect the adequacy of the disclosure of this specification. ...

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Abstract

The invention relates to a testing method for the sand discharging capacity of a lifting pump. The lifting pump is located in a testing well, and is used for extracting liquid in the well; and the testing well is connected with a liquid supplying device which is provided with a liquid supplying pump. The method includes the following steps that firstly, liquid with a specific sand content and in aspecific volume is prepared in the liquid supplying device; secondly, the liquid supplying pump is started, so that the liquid with the specific sand content is injected into the testing well from the liquid supplying device; thirdly, the lifting pump is started, so that the liquid in the testing well is extracted to the liquid supplying device to form a cycle loop; fourthly, the liquid supplyingpump and the lifting pump are adjusted, so that the flow speed of the liquid in the cycle loop reaches a plurality of preset values, and a plurality of well mouth pressure values of the testing wellare obtained due to measurement; and fifthly, liquid with a sand content different from the previous specific sand content and in a specific volume is prepared in the liquid supplying device, the steps from the second step to the fourth step are repeatedly executed, and well mouth pressure values corresponding to different liquid flow speeds and different sand containing rates are obtained due tomeasurement.

Description

technical field [0001] The invention relates to the technical field of marine engineering testing, in particular to a method for testing the sand discharge capacity of a lift pump. Background technique [0002] During the development of conventional oil and gas resources, artificial lift technology is mainly used to transport crude oil and natural gas. Although sand control measures have been taken, the formation has little or no sand during normal production, but some oil wells will fail to control sand or appear in the later stage of production. The situation of sand production in the ground. [0003] When lift pumps are used in sandy oil wells, there are many problems. For example, after the formation sand enters the wellbore, it will deposit during the flow process, causing the wellbore to be blocked, and the surface pipelines and oil storage tanks accumulate a large amount of sand, so they are often forced to The pipe string was lifted for overhaul operations to remove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D15/00F04B51/00
CPCF04B51/00F04D15/0088
Inventor 王宇宾徐鸿志李玉泉郝志伟邓君宇王天驹谢梦春王剑
Owner CNPC OFFSHORE ENG
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