Horizontal well rock debris transportation simulation experiment set and experiment method

A simulated experimental device and horizontal well technology, which is applied in earthwork drilling, wellbore flushing, wellbore/well parts, etc., can solve the problems of large wear, high resistance, sticking and sticking of drilling tools, and achieve simple structure, Low cost and accurate experimental results

Active Publication Date: 2014-01-01
SOUTHWEST PETROLEUM UNIV
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The accumulation of cuttings in the annulus is likely to cause high torque and high resistance of the drill string, sticking and sticki

Method used

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  • Horizontal well rock debris transportation simulation experiment set and experiment method
  • Horizontal well rock debris transportation simulation experiment set and experiment method
  • Horizontal well rock debris transportation simulation experiment set and experiment method

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Comparison scheme
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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 1~4 As shown, a horizontal well cuttings migration simulation experiment device and experimental method, including drilling fluid system, cuttings migration system, cuttings supply system, power system and cuttings recovery system five parts, characterized in that: The drilling fluid system is composed of a liquid storage tank 20, an outlet stop valve 19, a motor 18, a centrifugal pump 17, a pressure gauge 16, a flow meter 15, a butterfly valve 14 and a steel wire pipe 12, and the cuttings transport system is composed of a conversion joint 13 , sealed bearing 23, glass tube 1, through-hole flange 8, bearing 9, PVC pipe 2, PVC pipe joint 7, rock-carrying tool 28, eccentric triangular disk 29, blind plate 31 and support frame 30 constitute, and described cuttings supply The system is composed of a screw feeder 4 and a cuttings adding dev...

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Abstract

The invention relates to a horizontal well rock debris transportation simulation experiment set and experiment method which are used for simulating oil drilling and coal bed gas drilling. The horizontal well rock debris transportation simulation experiment set comprises a drill fluid system, a rock debris transportation system, a rock debris supply system, a power system, a data processing system and a rock debris recovering system. The drilling liquid system is composed of a liquid storage tank, a motor, a centrifugal pump, a flowmeter and a butterfly valve which are connected. The rock debris transportation system is composed of a converting connector, a glass tube, a PVC tube, a rock carrying tool, an eccentric triangular plate and the like. The rock debris supply system is composed of a spiral feeder and a rock debris filling device. The power system is composed of a speed regulating motor and a speed changing gear. The rock debris recovering system is composed of a recovering tube, a filter and a rock debris recovering pool. The horizontal well rock debris transportation simulation experiment set and the experiment method can be used for visually observing the transportation condition of horizontal well rock debris, and the influence of different discharge capacities, drill stem rotating speeds, the eccentricity between a drill stem and a borehole, rock debris amounts and rock debris grain sizes on a horizontal well rock debris transportation rule can be simulated. The horizontal well rock debris transportation simulation experiment set is simple and practical, and low in construction cost.

Description

technical field [0001] The invention relates to an experimental device and an experimental method for simulating oil drilling and coalbed methane drilling. The experimental device can perform visual observation on a horizontal well cuttings migration simulation experimental device and an experimental method. Background technique [0002] In the process of oil and coalbed methane drilling and production, in order to effectively increase the exposed area of ​​oil and gas layers, improve recovery, increase single well productivity, increase single well control area, and achieve "high production with fewer wells", horizontal well drilling technology is often used. A horizontal well is a well whose inclination reaches or approaches 90°, and the well body is drilled along the horizontal direction for a certain length of well. Sometimes, for some special needs, the inclination exceeds 90°. This is the cuttings migration zone of the horizontal well. Here comes the technical difficul...

Claims

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Application Information

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IPC IPC(8): E21B21/00
Inventor 祝效华刘少胡易静谌柯宇孙超夏炎袁光杰
Owner SOUTHWEST PETROLEUM UNIV
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