A cementing quality monitoring nipple device and data collection method

Abstract

The invention discloses a cementing quality monitoring sub-joint device (40). The monitoring sub-joint device (40) is connected between two adjacent casing pipes (20) in a casing string, and real-time data is collected between the casing pipes ( 20) and the state characterization data of the cement stone (10) in the annular space between the formation (30) including at least pressure, temperature and stress-strain, and evaluate and monitor the position of the sub-joint device (40) according to the state characterization data The tightness of the cement stone (10) at the place. The invention realizes the long-term continuous monitoring of the cementing operation quality and the sealing performance of the cement stone (10), provides powerful data support for timely understanding and mastering the sealing performance of the annular space, and provides scientific basis for timely treatment , and at the same time, early warning can be given to safety accidents caused by cementing failure.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas resources, in particular to a cementing quality monitoring nipple device and a data collection method. Background technique [0002] At present, the exploration and development of oil and gas resources is developing towards complex formations and deep oil and gas reservoirs, resulting in many complicated petroleum engineering situations, long cycle times, and high operational risks, which seriously restrict the exploration and development process and bring new challenges to cementing operations. The quality of cementing will directly affect many aspects such as drilling efficiency, safety accidents, life of oil and gas wells, and recovery rate of oil and gas reservoirs. Poor cementing quality or poor sealing will cause channeling, even overflow, and blowout accidents, such as the oil spill of BP in the Gulf of Mexico in 2010. Due to the influence of complex factors such a...

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Problems solved by technology

[0003] At present, the sonic cement bonding logging instrument is commonly used to evaluate the cementing quality. This measurement method mainly evaluates the bonding between the cementing casing and the cement stone, and cannot effectively monitor the sealing performance of the cement stone; and this evaluation method can only be used for After cementing, the cement cementation situation in a single period of time is measured by a single spot check, and long-term continuous monitoring cannot be carried out

[0004] As time goes by, affected by the high temperature and high pressure environment outside the well and other downhole operations, the cement stone will also change to a certain extent, which will lead to different degrees of problems in the cementing quality of the well. Therefore, a new cement is urgently needed. Downhole monitoring and evaluation tool for cementing cement quality, long-term continuous monitoring and evaluation of the quality of cementing operation and the sealing performance of cement stone

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