Intelligent well cementing equipment

A technology of intelligent cementing and equipment, which is applied in the directions of wellbore/well components, measurement, sealing/isolation, etc., and can solve the problems of not reaching the right place, not sealing, and not having enough displacement fluid

Active Publication Date: 2015-05-06
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the pump pressure does not increase after the amount of replacement fluid is reached, it is impossible to judge whether the rubber plug is in place
There are various reasons for this phenomenon. It may be that the rubber plug is not sea

Method used

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0019] Such as figure 1 and figure 2 As shown, the intelligent cementing equipment according to the embodiment of the present invention includes a multi-section casing 11 and a rubber plug 12, and the rubber plug 12 includes a rubber disc 20 and a floating ball installed on the rubber disc 20 13. Float ball information writing coil 15, depth information reading coil 16, circuit system 18, wherein:

[0020] Adjacent casing pipes 11 are connected by collars 10, and RFID collar chips storing the depth information of the current collars 10 are installed on the collars 10;

[0021] The floating ball 13 is fixed above the rubber tray 20 by a filler 14, the filler 14 can be c...

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Abstract

The invention discloses intelligent well cementing equipment. According to the intelligent well cementing equipment, every two adjacent sleeves are connected through a coupling; each coupling is provided with an RFID (Radio Frequency Identification Device) coupling chip for storing current coupling depth information; a floating ball is fixed above a rubber disc through filler; the filler can be completely decomposed after contacting with water for a preset time, so as to release the floating ball; an RFID floating ball chip is arranged on the floating ball; a circuit system is connected to a depth information reading coil and a floating ball information writing-in coil and is used for reading the depth information in the RFID coupling chip from the current corresponding RFID coupling chip through the depth information reading coil and is also used for writing the finally read depth information into the RFID floating ball chip through the floating ball information writing-in coil when not reading new depth information yet within the preset time. The well cementing equipment disclosed by the invention can be used for realizing automatic uploading of stop position information of a well cementing rubber plug, and the well cementing quality can be conveniently mastered.

Description

technical field [0001] The invention relates to the field of oil drilling equipment, in particular to an intelligent well cementing equipment. Background technique [0002] After the oil and gas drilling construction is completed, in order to ensure the safety of subsequent drilling, reinforce the well wall, or ensure the safe drilling of the lower wellbore, and achieve the purpose of sealing off oil, gas and aquifers during later drilling, casings must be run. Well cementing construction with pipes and grouting. Usually in double rubber plug cementing operations, inject cement slurry into the casing after running the casing, then run the upper rubber plug into the casing, then inject the displacement fluid into the casing, pressurize the upper rubber plug into the well and The cement slurry is squeezed out of the casing to replace the drilling fluid. Usually, in order to prevent the cement slurry from mixing with the drilling fluid, a lower rubber plug is also placed at t...

Claims

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Application Information

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IPC IPC(8): E21B33/13E21B33/134E21B47/04
CPCE21B33/13E21B33/134E21B47/04
Inventor 周俊然张耕培王益山范永涛杨晓勇
Owner BC P INC CHINA NAT PETROLEUM CORP
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