Simulation test automatic control device for while-drilling gamma imager

A technology of simulated test and automatic control device, which is applied in the fields of surveying, earth-moving drilling, wellbore/well components, etc., can solve the problems of long cycle, restricting technology development, affecting the transformation speed of scientific research results in the research process, etc., and achieves reliable detection methods. Effect

Pending Publication Date: 2017-10-24
CHINA PETROCHEMICAL CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

An important reason is that some research institutions only pay attention to the development of downhole instruments themselves, without supporting automatic control devices for ground simulation tests. The comprehensive performance tests of tools and instruments often use direct on-site field tests. This method is not only expensive, but also take...

Method used

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  • Simulation test automatic control device for while-drilling gamma imager
  • Simulation test automatic control device for while-drilling gamma imager

Examples

Experimental program
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Effect test

Embodiment １

[0019] refer to figure 1 As shown in Fig. 1 , a self-control device for simulation testing of a gamma imager while drilling includes: a sliding guide rail 1; a rotating drive device 2 (preferably a bidirectional speed-regulating motor) fixed on the sliding guide rail 1; one end is connected to the output shaft of the rotating drive device 2 A telescopic coupling 4 (such as a screw coupling); a rotating measuring device 3 fixed on the telescopic coupling 4 (an angle measuring device commonly used in existing MWD gamma imagers); one end is connected to the telescopic coupling The other end of the shaft device 4 is connected to form a gamma imaging while drilling body 7 in linkage; a stable sliding platform 6 is set on the sliding guide rail 1, and the stable sliding platform 6 and the gamma imaging while drilling body 7 form a circumferential rotation, an axial The supporting cooperation of the movement; the gamma imaging measurement module 9 and the data storage and display int...

Embodiment ２

[0021] Comparing with Figure 1 and Figure 2, the self-control device for the simulation test of the gamma imager while drilling includes: sliding guide rail 1, rotation drive device 2, rotation measurement device 3, retractable coupling 4, data storage and display interface 5, gamma while drilling Horse imaging body 7 , gamma imaging measurement module 9 , formation simulation wellbore 10 , anti-collision controller 17 and travel drive and controller 18 .

[0022] A rotary drive device 2 is fixed on the sliding guide rail 1, and two stable sliding platforms 6 that are slidably matched with the sliding guide rail 1. The gamma imaging while drilling body 7 is supported by the two stable sliding platforms 6 to maintain the gamma while drilling. The horse imaging body 7 cannot move up and down, and moves horizontally under the control of the stroke drive and controller 18 . The rotation driving device 2 is mainly used to drive the rotation of the gamma imaging body 7 while drillin...

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Abstract

The invention relates to a simulation test automatic control device for a while-drilling gamma imager. The simulation test automatic control device comprises a sliding guide rail, a rotating driving device, a rotating measuring device, an extendable coupler, a data storage and display interface, a while-drilling gamma imaging body, a gamma imaging measuring module and a stratum simulating shaft, wherein the gamma imaging measuring module is mounted on the while-drilling gamma imaging body; the while-drilling gamma imaging body is connected with the rotating driving device through the extendable coupler and driven by the rotating driving device to rotate; the stratum simulating shaft and the while-drilling gamma imaging body are matched in a cross mode; and the gamma imaging measuring module is connected with the data storage and display interface through a signal wire. The simulation test automatic control device is suitable for simulating the situation that the gamma imager penetrates through stratums of different radioactivity strength under the sliding and rotating drilling states of the gamma imager, the lithological change of the drilled stratum is displayed in real time by processing measured data, and the basic and reliable detecting measure is provided for development, application and popularization of the gamma imager.

Description

technical field [0001] The invention relates to the field of logging instrument testing devices, in particular to a simulation device for ground testing of gamma imaging tools in the logging-while-drilling field. Background technique: [0002] With the increasingly poor quality of my country's oil and gas resources, prominent heterogeneity and anisotropy of oil and gas reservoirs, and the rapid development of unconventional oil and gas, it is required that logging technology be more accurate, detect farther, be more adaptable to complex well conditions, and be safer and more efficient. At the beginning of this century, the international advanced logging technology has been able to carry out formation imaging measurement, while the research on imaging while drilling technology in my country is still in the initial stage of research. At present, most of the imaging and logging equipment used while drilling rely on imports. The cost of introduction and service prices are high, ...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/002E21B47/12
CPCE21B47/12E21B49/00E21B47/002
Inventor 施斌全李瑾杨全进李翠唐海全张海花李勇华崔海波李佳
Owner CHINA PETROCHEMICAL CORP
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