Device and method for detecting casing technical condition
A technical status and detection device technology, which is applied in the direction of measurement, earthwork drilling, borehole/well components, etc., can solve the problems of limited number of measurement walls and low reliability of detection results, etc., and achieve high reliability and high sensitivity Effect
Active Publication Date: 2022-05-06
PETROCHINA CO LTD
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Problems solved by technology
[0005] The inventors have found that there are at least the following problems in the prior art: the mechanical structure adopted in the multi-arm caliper logging method has a ring shape because the measuring arm is close to the cylinder, so that the number of measuring walls is limited. The middle of the two measuring arms cannot be detected. Therefore, the reliability of the detection results of the existing casing technical condition detection method is not high.
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[0032] Embodiments of the present application provide a casing condition detection device and method.
[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0034] figure 1 It is a schematic cross-sectional view of an embodiment of the casing technical condition detection device of the present application. refer to figure 1 , the bushing technical status detection device may include from...
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The embodiment of the present application discloses a casing technical condition detection device and method, the device includes: a cable head, a magnetic positioning communication sub-joint, an upper centralizer, an upper support arm sub-joint, a lower support arm sub-joint, and a lower centralizer and temperature and pressure joints; the upper support arm joint and the lower support arm joint are provided with a plurality of support arms; the end of the support arm is connected with a strain detection slider; the plurality of support arms are evenly distributed Outside the upper arm sub-section or the lower arm sub-section, and distributed in a ring; the distribution of the arms on the upper arm sub-joint and the lower arm sub-section do not coincide ; The magnetic positioning communication short section is used for data communication and collecting magnetic positioning signals. The casing technical condition detection device and method provided in the present application can improve the reliability of casing technical condition detection results.
Description
technical field [0001] The present application relates to the technical field of petroleum well logging, and in particular to a device and method for detecting casing technical conditions. Background technique [0002] Most of the oil and gas wells in the early oilfields were cemented with casing. Over time, due to factors such as crustal movement, seismic activity, underground medium corrosion, formation heterogeneity, dip angle, rock properties, etc., oil and gas wells may be damaged. Casing technical condition deteriorated. Engineering factors such as water injection development, oil well sand production, reservoir stimulation, cementing and completion quality are also the main reasons for inducing geological factors to produce destructive in-situ stress. [0003] In order to ensure the safety of oil and gas exploitation, it is necessary to test the casing to determine whether the casing is safe to use. [0004] Existing casing detection technology is mainly realized by...
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IPC IPC(8): E21B47/085E21B47/01E21B47/00
CPCE21B47/01E21B47/007E21B47/085
Inventor 何金宝朱静杨清玲霍艳皎周轶青邹杨乔沐冯紫微高佳兴罗鹏飞张宇宋静张国龙
Owner PETROCHINA CO LTD