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Multi-stage fracturing intelligent control system and control method

An intelligent control system and fracturing technology, applied in earth-moving drilling, fluid extraction, measurement, etc., can solve the problems of high temperature resistance performance and low identification reliability, and achieve simple operation, improved accuracy and reliability. the effect of reducing the difficulty of design

Inactive Publication Date: 2021-07-20
VERTECHS NOVA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This method requires the antenna, reader, battery, motor, locking device, etc. to be built into the sliding sleeve in advance. These electrical components need to be placed underground for a long time following the sliding sleeve, and the high temperature resistance performance of each electrical component is required. The longer the time the components are placed downhole, the lower the reliability of identification, and the lower reliability of identification has occurred in actual operation

Method used

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  • Multi-stage fracturing intelligent control system and control method
  • Multi-stage fracturing intelligent control system and control method
  • Multi-stage fracturing intelligent control system and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as Figure 1-Figure 6 As shown, a multi-stage fracturing intelligent control system includes a casing joint 1 , a sliding sleeve 2 and an intelligent delivery device 3 .

[0041] The sliding sleeve 2 is connected between two adjacent sleeve pipe joints 1, and each of the sliding sleeves 2 includes a sliding sleeve outer tube 24 and a sliding sleeve inner tube 25 connected by socket connection. The outer tube 24 is provided with a liquid outlet hole 23, and the inner tube 25 of the sliding sleeve is connected with the outer tube 24 of the sliding sleeve through a locking device 22 (such as a pin, etc.), and the inner tube 25 of the sliding sleeve is opposite to the outer tube 24 of the sliding sleeve. The liquid outlet hole 23 is blocked.

[0042] The rear portion of the inner tube 25 of the sliding sleeve is also provided with a limiting part 26, the limiting part 26 and the outer tube of the sliding sleeve 24 are integrally formed structural parts, and the inner ...

Embodiment 2

[0047] A multi-stage fracturing intelligent control method, using a multi-stage fracturing intelligent control system as described in Embodiment 1 for control, comprising the following steps:

[0048] Step 1: Place the electronic tag 21 in the sliding sleeve 2, wherein the electronic tag 21 corresponding to the sliding sleeve 2 of a certain level is installed on the sliding sleeve 2 of the previous level, and the sliding sleeve 2 is placed underground;

[0049] Step 2: put the intelligent delivery device 3 into the well, the intelligent delivery device 3 identifies the electronic tag 21 of a certain level of the sliding sleeve 2 on the previous level of the sliding sleeve 2, and then drives the limit mechanism 36 to extend, The limit mechanism 36 pushes the sliding sleeve 2 to destroy the locking device 22 , and continues to push the sliding sleeve inner tube 25 of a certain level of the sliding sleeve 2 to slide relative to the sliding sleeve outer tube 24 to expose the liqui...

Embodiment 3

[0052] The difference between this embodiment and Embodiment 1 is that, in this embodiment, the electronic label 21 corresponding to the sliding sleeve 2 of a certain level is installed on the sliding sleeve 2 of the level, and the electronic label 21 is located on the sliding sleeve 2. The front part of the sleeve inner tube 25. After the smart dispensing device 3 recognizes the electronic tag 21 , it pushes the inner tube 25 of the sliding sleeve to slide, and then exposes the liquid outlet 23 .

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Abstract

The invention discloses a multi-stage fracturing intelligent control system and control method. The control system comprises a casing pipe joint, a sliding sleeve and an intelligent putting device; each sliding sleeve comprises a sliding sleeve outer pipe, a sliding sleeve inner pipe and an electronic tag which are connected in a sleeving manner, a liquid outlet hole is formed in the sliding sleeve outer pipe, and the sliding sleeve inner pipe is connected with the sliding sleeve outer pipe through a locking device and shields the liquid outlet hole; and the intelligent putting device comprises an antenna, a reader, a battery, a driving mechanism, an executing mechanism and a limiting mechanism, the antenna is used for receiving an electromagnetic signal of the electronic tag, the reader is connected with the antenna and used for identifying the received electromagnetic signal, the driving mechanism is connected with the reader, the reader controls the driving mechanism to act after identifying the electromagnetic signal, the executing mechanism is connected with the driving mechanism, the limiting mechanism is connected with the executing mechanism, and the driving mechanism drives the executing mechanism to act, so that the limiting mechanism extends out of the intelligent putting device, pushes the sliding sleeve inner pipe to slide relative to the sliding sleeve outer pipe and exposes the liquid outlet hole.

Description

technical field [0001] The invention relates to the technical field of oil and gas development, in particular to a multi-stage fracturing intelligent control system and control method. Background technique [0002] The existing casing sliding sleeve opening procedure needs to destroy or unlock the sliding sleeve locking device first, and then open the sliding sleeve, thereby exposing the holes of the liquid flow path, the liquid enters the formation through the holes, and creates cracks in the formation through high-pressure hydraulic force, thereby effectively Exploitation of oil and gas resources in the formation. In order to maximize the exploitation of oil and gas resources in the formation, there are usually multiple casing sliding sleeves in a well, and each casing sliding sleeve corresponds to its corresponding formation. If during the casing pressure test, a certain level of sliding sleeve is opened in advance, the formation below this level will not be able to carr...

Claims

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Application Information

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IPC IPC(8): E21B34/14E21B43/26E21B43/14E21B47/09
CPCE21B34/066E21B34/14E21B43/14E21B43/26E21B47/09E21B34/06
Inventor 张强张伟曾琦军
Owner VERTECHS NOVA TECH CO LTD
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