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Coiled tubing underground load testing tool

A technology of load testing and tubing, applied in measurement, wellbore/well components, construction, etc., can solve the problems of difficult real-time detection of the force of the pipe string, and achieve the effect of improving the understanding of mechanical behavior and the level of tool design

Active Publication Date: 2015-04-22
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

[0004] The purpose of the present invention is to provide a coiled tubing downhole load testing tool to solve the problem of difficult real-time detection of the force of the pipe string during the existing coiled tubing operation

Method used

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  • Coiled tubing underground load testing tool
  • Coiled tubing underground load testing tool
  • Coiled tubing underground load testing tool

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 and figure 2 As shown, the present invention provides a coiled tubing downhole load testing tool, comprising an inner cylinder 10 and an outer casing 2 fixedly sleeved on the outer surface of the inner cylinder 10, the upper end of the inner cylinder 10 is an upper joint 1, and the inner cylinder 10 The lower end is threadedly connected with a tension torque sensor 7, and a sealing ring 9 is provided between the lower end of the outer casing 2 and the tension torque sensor 7; a power supply module 13, a memory 11, a temperature Sensor 12, pressure sensor 8 is arranged on the inner cylinder wall of inner cylinder 10, tension torque sensor 7, temperature sensor 12, pressure sensor 8, memory 11 are connected with power supply module 13 respectively, tension torque sensor 7, temperature sensor 12, pressure sensor 8 are respectively connected with the memory 11.

[0025] Specifically, during coiled tubing fracturing, drilling, and workover operations, check ...

Embodiment 2

[0029] The invention provides a coiled tubing downhole load testing tool, comprising an inner cylinder 10 and an outer casing 2 fixedly sleeved on the outer surface of the inner cylinder 10, the upper end of the inner cylinder 10 is an upper joint 1, and the lower end of the inner cylinder 10 is threaded There is a tension torque sensor 7, a sealing ring 9 is arranged between the lower end of the outer casing 2 and the tension torque sensor 7; a power module 13, a memory 11, and a temperature sensor 12 are arranged between the inner casing 10 and the outer casing 2, The inner cylinder wall of the inner cylinder 10 is provided with a pressure sensor 8, the tension torque sensor 7, the temperature sensor 12, the pressure sensor 8, and the storage device 11 are respectively connected with the power supply module 13, and the tension torque sensor 7, the temperature sensor 12, and the pressure sensor 8 are connected with the power supply module 13 respectively. Memory 11 is connecte...

Embodiment 3

[0034] The invention provides a coiled tubing downhole load testing tool, comprising an inner cylinder 10 and an outer casing 2 fixedly sleeved on the outer surface of the inner cylinder 10, the upper end of the inner cylinder 10 is an upper joint 1, and the lower end of the inner cylinder 10 is threaded There is a tension torque sensor 7, a sealing ring 9 is arranged between the lower end of the outer casing 2 and the tension torque sensor 7; a power module 13, a memory 11, and a temperature sensor 12 are arranged between the inner casing 10 and the outer casing 2, The inner cylinder wall of the inner cylinder 10 is provided with a pressure sensor 8, the tension torque sensor 7, the temperature sensor 12, the pressure sensor 8, and the storage device 11 are respectively connected with the power supply module 13, and the tension torque sensor 7, the temperature sensor 12, and the pressure sensor 8 are connected with the power supply module 13 respectively. Memory 11 is connecte...

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Abstract

The invention provides a coiled tubing underground load testing tool. The tool comprises an inner cylinder and an outer protecting cylinder fixedly arranged on the outer surface of the inner cylinder in a sleeving mode, wherein an upper connector is arranged at the upper end of the inner cylinder, a tension and torque sensor is connected to the lower end of the inner cylinder in a threaded mode, and a sealing ring is arranged between the lower end of the outer protecting cylinder and the tension and torque sensor; a power module, a memory and a temperature sensor are arranged between the inner cylinder and the outer protecting cylinder, a pressure sensor is arranged on the wall of the inner cylinder, the tension and torque sensor, the temperature sensor, the pressure sensor and the memory are all connected with the power module, and the tension and torque sensor, the temperature sensor and the pressure sensor are all connected with the memory. By the adoption of the tool, the tension, torque, temperature and pressure of a coiled tubing can be measured by placing the tool underground once, the underground load of the coiled tubing can be effectively detected, the mechanical property of pipe strings can be stored and recorded, stress change of drill strings can be analyzed, and the mechanical states of pipe strings during tripping operation, fracturing, drill-polishing and well repairing can be recorded.

Description

technical field [0001] The invention belongs to the technical field of coiled tubing operation for oil and gas field development, and in particular relates to a downhole load testing tool for coiled tubing. Background technique [0002] At present, the application range of coiled tubing is becoming wider and wider, including fracturing, workover, drilling and grinding, etc. The use of coiled tubing has greatly improved the construction efficiency. However, the coiled tubing is subjected to very complex forces during downhole operations. At present, the mechanical design of the construction strings mostly comes from theoretical calculations. Due to the complexity of the downhole operation strings, the different wellbore trajectories, and the lack of mechanical properties of the strings on site, downhole accidents often occur . The safety and reliability of coiled tubing operations are the main concerns of operators. During the operation, the coiled tubing’s instability and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/007
CPCE21B47/007E21B47/06E21B47/07
Inventor 徐迎新韩静静景志明袁伟文谢涛席仲琛姚兰周真
Owner BC P INC CHINA NAT PETROLEUM CORP
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