Underground layered gas-liquid two phase fluid pressure and temperature-retaining sampling device

A sampling device and gas sampling technology, applied in the direction of wellbore/well components, earthwork drilling, etc., can solve problems such as unsatisfactory, unmaintainable sampling pressure and temperature, difficult control of sampling speed and sampling volume, etc., and achieve principle and Simple structure, increased fidelity, and high performance-price ratio

CN102108861AInactive Publication Date: 2011-06-29INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an underground layered gas-liquid two phase fluid pressure and temperature-retaining sampling device, which is arranged on the inner wall of a drilled hole or a sleeve and consists of a packer system, a liquid sample inlet system, a gas sample inlet system, an automatic multi-way valve, a sampling system, a temperature control system, and an external pressure / flow control system, wherein a thermal-insulation layer or temperature control system covers the outside of the entire sampling device. The device accurately controls the layer under ground fluid sampling positionto realize gas and liquid fluid sampling at different layer positions of a stratum, ensures the temperature and pressure in a sampling process are consistent with those of the underground fluid, and improves the pressure and temperature-retaining degree of the fluid in the sampling process. The principle of the device is simple, the parts are assembled simply and the device is suitable for multilayer sampling in a drilled well and underground gas-liquid two-phase fluid sampling.
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Description

technical field

[0001] The invention relates to the field of fluid sampling in deep formations, and more particularly relates to a fidelity sampling device for stratified gas-liquid two-phase fluid in a well, which is suitable for fidelity sampling of underground fluids. Background technique

[0002] Subsurface fluids (including oil, oil and gas, groundwater, gas reservoirs, brine and other subsurface fluids) survey work includes understanding the characteristics and natural conditions of subsurface fluids, fluid components, concentrations, distribution ranges, and their transmission conditions and conditions in the underground environment. Change trends, as well as the potential hazards of fluids to people's health and living environment. Sampling technology occupies a very important position in the study of subsurface fluids (including petroleum, oil and gas, groundwater, gas reservoirs, brine and other subsurface fluids). Countries all over the world attach great importa...

Examples

Embodiment Construction

[0092] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0093] A fidelity sampling device for layered gas-liquid two-phase fluid in a well, the sampling device consists of a packer system 10, a liquid sampling system 20, a gas sampling system 30, an automatic multi-way valve 40, a sampling system 50, and a temperature control system 60 , together with the external pressure / flow control part and external protection. A packer system 10 , a liquid sampling system 20 , a gas sampling system 30 , an automatic multi-way valve 40 , a sampling system 50 and a temperature control system 60 are installed on the inner wall 70 of the drilling or casing.

[0094] The packer system 10 includes a number of packers such as the first packer 11, the second packer 12, the third packer 13, and the fourth packer 14 (numbers are deduced by analogy, and the number of packers can be 4 -20 pieces) together; the first packer 11, the second packer 12, the third packer...