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AssigneeDaqing Oilfield Co., Ltd.
InventorsDemin Wang, Yan Wang, Jun Wan, Shumin Zhang, Rongjie Zhu, Li Li
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The present invention discloses a corrugated settling cup and a multi-cup uniform flux gas anchor, which belong to oilfield gas-liquid separation devices. The external profile of the cup body of the corrugated settling cup rises in a corrugated shape along an axial direction of the corrugated settling cup, which facilitates rapid aggregation and rise of gas. The multi-cup uniform flux gas anchor is comprised of a plurality of the corrugated settling cups, and further includes a central pipe, a plurality of settling cup protectors and a well-flushing valve, wherein the plurality of settling cup protectors are slipped onto the central pipe in clearance fit and the plurality of the corrugated settling cups are slipped onto the central pipe in clearance fit between every two settling cup protectors, a plurality of liquid inlet holes are located evenly on the central pipe at a position close to an inner bottom of each corrugated settling cup, and a lower portion of the central pipe is connected to the well-flushing valve. With the plurality of the corrugated settling cups, the gas anchor divides a gas-liquid mixture into a number of portions, and the external profile rising in a corrugated shape allows the separated gas to rapidly aggregate and rise up, thereby achieving the object of performing effective gas-liquid separation, increasing pump efficiency and oil production, saving energy and reducing consumption.
A corrugated settling cup comprising a cup body, wherein a bottom of the cup body is open and provided with a locating step, the top of the locating step is provided with a plurality of locating holes, and the bottom of the settling cup is provided with locating protrusions corresponding to the locating holes, and wherein an external profile of the cup body rises in a corrugated shape along an axial direction of the cup body.
A multi-cup uniform flux gas anchor, comprising a central pipe, a plurality of corrugated settling cups, a plurality of settling cup protectors and a well-flushing valve, wherein the plurality of settling cup protectors are slipped onto the central pipe in clearance fit and the plurality of corrugated settling cups are slipped onto the central pipe in clearance fit between every two settling cup protectors, a plurality of liquid inlet holes are located evenly on the central pipe at a position close to an inner bottom of each corrugated settling cup, a lower portion of the central pipe is connected to the well-flushing valve, and wherein an external profile of the cup body of the corrugated settling cups rises in a corrugated shape along an axial direction of the cup body.
Dependencies are inferred from the claim text.