High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method

A high-temperature, high-pressure, simulation evaluation technology, which is applied in earthwork drilling, wellbore/well components, measurement, etc., can solve problems such as poor evaluation results of simulation evaluation devices

Active Publication Date: 2014-01-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0015] In order to solve the defect that the evaluation effect of the simulation evaluation device in the prior art is not good, the pre...

Method used

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  • High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method
  • High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method
  • High-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method

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Embodiment Construction

[0080] like figure 1 As shown, a high temperature and high pressure plugging / anti-vomiting simulation evaluation device includes a liquid storage unit and a formation model, and the liquid outlet of the liquid storage unit is connected to the liquid inlet of the formation model.

[0081] The device sequentially includes a drilling fluid pressure control unit, a fluid storage unit, a formation model and a confining pressure unit. The main body of the formation model is the core holder F, which includes the holder body F1, the core sample to be tested F5, the upper locking head F2, the lower locking head F3, the positive liquid inlet N3 of the holder, the positive outlet The liquid port N6 reverses the liquid inlet N5 and the holder liquid outlet N4, the shape of the rock core sample F5 to be tested and the holder body F1 are both cylindrical cylinders; the upper locking head F2 and the lower locking head The shapes of F3 are all bolt-shaped cylinders.

[0082] The holder body...

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PUM

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Abstract

The invention relates to a high-temperature and high-pressure plugging / sticking preventing simulation evaluation device and method. The device comprises a well drilling liquid pressure control unit, a liquid storage unit, a stratum model, a plugging liquid temperature control unit and a confining pressure unit. The stratum model is provided with a crack simulating stratum forms, and a pressure sensor is distributed on the crack. The pressure and the temperature of plugging liquid entering the stratum model and pressure applied to the stratum model are controlled, pressure values of different depths of the crack are measured through the pressure sensor, and flow of the plugging liquid is measured according to a weighing method. The high-temperature and high-pressure plugging/sticking preventing simulation evaluation device and method can evaluate the plugging effect of different plugging materials and plugging slurry under the same condition and provide scientific research methods for the research of plugging well leakage and extrusion theories, the preparation of plugging agents which are strong in staying performance, forming of process technologies of preventing the plugging agents from sticking backwards, the building of laboratory plugging simulation evaluation method standards and the like.

Description

technical field [0001] The invention relates to a simulation evaluation experiment device for drilling plugging in the field of petroleum exploration and development experimental equipment, in particular to a simulation evaluation device for high temperature and high pressure plugging / anti-vomiting plugging. Background technique [0002] Lost circulation is one of the complicated situations often encountered in the oil drilling process. Once a lost circulation occurs during the drilling process, it will not only delay the drilling time, lose the drilling fluid, damage the oil and gas layer, but also cause sticking, collapse and blowout due to the instability of the well wall. and other complex accidents. The complex situation induced by lost circulation has been a worldwide problem in the process of oil and gas exploration and development for a long time, and it is the main technical bottleneck restricting the speed of exploration and development. In order to provide a reas...

Claims

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Application Information

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IPC IPC(8): E21B47/10
Inventor 石秉忠梅春桂徐江张国刘金华
Owner CHINA PETROLEUM & CHEM CORP
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