Sand removing device
A technology of sand collection tank and gas-liquid separator, which is applied in the field of sand removal device, can solve the problem of affecting the sand removal accuracy, the filter type sand removal device is difficult to balance the sand removal accuracy and sand removal efficiency, and the sand removal effect of the sand removal device is not ideal and other issues to achieve the effect of improving the effect of sand removal
Pending Publication Date: 2022-07-08
PETROCHINA CO LTD
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Problems solved by technology
[0005] It is difficult for the filter desander to balance the sand removal accuracy and sand removal efficiency. If the size of the filter slot is too large, it will affect the sand removal accuracy, and if the size of the filter slot is too small, it will increase the risk of the filter desander being blocked and affect the sand removal efficiency. ; while the gas-liquid two-phase flow discharged from the cyclone desander generally has more solid sand
This shows that the desanding effect of existing desandering device is not ideal
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[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0039] In order to make the technical solutions and advantages of the present application clearer, the structure, functions and advantages of the sand removal device will be described in detail below with reference to the accompanying drawings.
[0040] The sand removal device provided in the embodiments of the present application, such as figure 1 As shown, it includes a liquid collecting tank 1, a gas-liquid separator 2, a cyclone 3,...
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The invention relates to the technical field of oil and gas development, and discloses a desanding device which is characterized in that a gas-liquid separator is located in a liquid collecting tank, a cyclone is located in the gas-liquid separator, and the interiors of the liquid collecting tank, the gas-liquid separator and the cyclone communicate with one another; the feeding pipeline communicates with the interior of the gas-liquid separator, so that gas-liquid two-phase flow to be desanded enters the gas-liquid separator through the feeding pipeline to be subjected to first-stage gas-liquid separation and then enters the cyclone to be subjected to second-stage gas-liquid separation, and then a gas phase is discharged. The sand collecting tank is located below the liquid collecting tank and connected with the liquid collecting tank so as to collect the separated solid-liquid mixture. According to the desanding device provided by the invention, the desanding effect of the gas phase can be improved.
Description
technical field [0001] The application relates to the technical field of oil and gas development, in particular to a sand removal device. Background technique [0002] In the wellhead production process of natural gas and shale gas, filter-type desander or cyclone desander are often used to remove sand to remove sand particles contained in the gas-liquid two-phase flow. The two-phase flow is then subjected to gas-liquid separation. Due to the high-speed movement of sand particles in pipelines and equipment, it will cause serious erosion and corrosion of production facilities. In severe cases, the perforation of pipelines or valves will be introduced. At the same time, due to the high operating pressure of the equipment, sand particles will scour the sewage pipes and elbows at high speed during sand discharge. The wall surface will also cause the wall thickness to be thinned and even perforated. Therefore, the efficiency of the desander will play a key role in the safety of...
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IPC IPC(8): B01D45/16B01D45/02B01D50/20C10L3/10
CPCB01D45/16B01D45/02C10L3/101
Inventor 吴宇计维安戴万能张春阳王勇
Owner PETROCHINA CO LTD