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Online horizontal well production profile logging system applied to oil pipe conveying

A liquid production profile and horizontal well technology, applied in wellbore/well components, measurement, earthwork drilling and production, etc., can solve the problems of low logging success rate, short transportation distance, oil layer pollution, etc., achieve high testing accuracy, improve The effect of success rate and simple construction process

Pending Publication Date: 2020-02-07
DAQING OILFIELD CO LTD +1
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AI Technical Summary

Problems solved by technology

[0011] The invention provides an on-line horizontal well fluid production profile logging system applied to tubing transportation to overcome the problems of oil layer pollution, short transportation distance and low success rate of horizontal well production profile logging due to the logging technology in the prior art and other defects

Method used

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  • Online horizontal well production profile logging system applied to oil pipe conveying
  • Online horizontal well production profile logging system applied to oil pipe conveying
  • Online horizontal well production profile logging system applied to oil pipe conveying

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Such as Figure 1-7 As shown, the embodiment of the present invention provides an on-line horizontal well liquid production profile logging system applied to tubing transportation, including:

[0040] Logging module 1, cable fishing device, cable bypass device, cable protector 4, special wellhead sealing device for horizontal well 5;

[0041] The well logging module 1 is installed on the tubing 11, transported downhole along with the tubing 11, positioned on the interlayer of each well section to be measured and located between two adjacent perforated layers 6; the logging module 1 prestores A certain number of cables are connected to each logging module 1 through the in-pipe cable catcher;

[0042] The bottom end of the tubing pump is connected to the screen 8, and the bottom end of the screen pipe 8 is connected to the cable bypass device 3...

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Abstract

The invention relates to the technical field of logging, in particular to an online horizontal well production profile logging system applied to oil pipe conveying. The system comprises logging modules, cable fishers, cable bypasses, cable protectors and special horizontal well mouth closing devices; the logging modules are conveyed underground along with oil pipes, and are positioned on each wellsection sandwich layer to be logged; the bottom ends of oil pipe pumps are connected with screen pipes; the bottom ends of the screen pipes are connected with the cable bypasses; the cable bypasses realize conversion of cables inside and outside the oil pipes; a logging combiner uploads acquired water contents into a ground controller; the ground controller sends control instructions to a demodulator in the logging combiner; and the demodulator performs decoding to judge the working conditions of the logging modules. A construction process is simple, safe and reliable, can realize enrolling of multi-core and multi-parameter data, improves the success rate of horizontal well production profile logging, and has the advantages of safety, reliability, no step number limiting, online measurement and high testing precision.

Description

technical field [0001] The invention relates to the field of well logging technology, in particular to a well logging system for on-line horizontal well fluid production profiles applied to tubing transportation. Background technique [0002] At present, the horizontal well logging technology mainly includes six methods: [0003] (1) Coiled tubing transmission wireline logging technology; [0004] (2) Electronic traction instrument transmission cable logging technology; [0005] (3) Gravity transmission wireline logging technology; [0006] (4) Logging technology of hydraulic conveyance method; [0007] (5) Oil pipe transmission cable logging technology; [0008] (6) Tubing transportation storage logging technology. [0009] Among them, the tubing transmission cable logging technology mainly includes wet joint type tubing transmission cable logging technology and protected basket type tubing transmission cable logging technology. The wet joint type tubing transmission c...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/12E21B47/26E21B47/017
CPCE21B47/00E21B47/12Y02A90/30
Inventor 罗来军谢荣华刘兴斌李雷刘孝芹王延军王明伟黄学建刘霞唐海涛李军黄春辉
Owner DAQING OILFIELD CO LTD
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