System and method for testing sand carrying capacity of fracturing fluid

A capability test and fracturing fluid technology, applied in the field of fracturing, can solve problems such as equipment and instruments not matching, and achieve the effect of preventing heat loss, preventing injury, and ensuring pipeline safety

Active Publication Date: 2015-10-21
HUANENG CLEAN ENERGY RES INST +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problem of unsuitable equipment and instruments existing in the above-mentioned prior art, the object of the present invention is to provide a carbon dioxide anhydrous fracturing fluid sand-carrying ability testing syste

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  • System and method for testing sand carrying capacity of fracturing fluid
  • System and method for testing sand carrying capacity of fracturing fluid
  • System and method for testing sand carrying capacity of fracturing fluid

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the drawings.

[0037] Such as figure 1 As shown, the gas of the first gas cylinder 1 and the second gas cylinder 2 passes through the first valve 3 and the second valve 4 respectively, and after being purified by the gas purifier 5, the flow is measured by the volumetric flow meter 6. Then through the refrigeration system 7, the carbon dioxide is refrigerated and liquefied and stored in liquid CO 2 In storage tank 8, after CO 2 The pump 13 is fed into the pipeline and mixed with the pre-configured additives of different proportions in the reagent tank 15 pumped into the pipeline by the reagent pump 14 from another branch, and then when the fluid is pressurized to a certain degree, it passes through the safety The valve 18 and the one-way valve 19 are heated appropriately by the preheater 20. By controlling the opening or closing of the sixth valve 22 and the seventh valve 25 or the eighth valve 26 ...

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Abstract

The invention relates to a system for testing sand carrying capacity of fracturing fluid. The system is characterized in that firstly a first gas cylinder and a second gas cylinder are respectively connected with the inlet of a gas purifier through a first valve and a second valve, the outlet of the gas purifier is sequentially connected with a volumetric flowmeter, a refrigeration system and a liquid CO2 storage tank, a third valve is connected between the refrigeration system and the liquid CO2 storage tank, the outlet of the liquid CO2 storage tank is connected with a fourth valve, a first pressure gauge, a fifth valve and a CO2 pump and then converges with a branch connected with a reagent tank and a reagent pump, a safety valve is connected at a junction between two branches, then a one-way valve, a preheater, a first thermometer and a second thermometer are sequentially connected, and then a horizontal sand carrying transport branch is entered to test the transport performance of the fracturing fluid or a vertical sand suspending transport branch is entered to test the sand suspending performance of the fracturing fluid. The invention further discloses a corresponding testing method, which is specially used for simulating and testing the sand carrying capacity of carbon dioxide anhydrous fracturing fluid at different additive proportions under different situations of temperature, pressure and displacement.

Description

Technical field [0001] The present invention relates to the field of fracturing technology, in particular to a test system and a test method for the sand carrying capacity of carbon dioxide anhydrous fracturing fluid. Background technique [0002] With the large-scale development of tight and low-permeability unconventional oil and gas reservoirs, in order to reduce the damage caused by conventional water-based fracturing fluids to reservoirs (especially water-sensitive reservoirs), carbon dioxide waterless fracturing technology is due to its "waterless fracturing". The characteristics of "are attracting attention. CO 2 Anhydrous fracturing technology is mainly based on liquid CO 2 An anhydrous fracturing fluid mixed with a very small amount of chemical additives replaces the traditional water-based fracturing fluid for reservoir reconstruction. While improving the effect of volume fracturing reconstruction, it can effectively protect the reservoir and save a lot of water resourc...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N21/85
Inventor 张健赫文豪郜时旺张国祥荆铁亚陈亮刘超周伟强
Owner HUANENG CLEAN ENERGY RES INST
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