Title:
OIL EXTRACTION SYSTEM, BLOWOUT PREVENTION DEVICE AND OIL EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/115663
Kind Code:
A1
Abstract:
An oil extraction system, a blowout prevention device and an oil extraction method. The oil extraction system comprises an oil extraction pump (100), a connecting device (200) and a central pipe (300), wherein the connecting device (200) is connected to the oil extraction pump (100); and the central pipe (300) is connected to the oil extraction pump (100), and is at least partially located in the connecting device (200). The oil extraction system further comprises a blowout prevention device (400), which is located at an oil outlet of the oil extraction pump (100). The blowout prevention device (400) comprises an annular supporting base (410), and a stop ring (430) and connecting rods (420), which are located in the annular supporting base (410), wherein the stop ring (430) is located on the side of an annular supporting face (411) of the annular supporting base (410) facing the oil extraction pump (100), and is spaced apart from the annular supporting face (411), and the stop ring (430) is connected to the annular supporting face (411) by means of the connecting rods (420); and the central pipe (300) passes through a stop ring opening (431) of the stop ring (430) and an opening (4110) of the annular supporting face (411), an inner side of the stop ring (430) is in sealed contact with the central pipe (300), an outer side of the stop ring (430) is in sealed contact with an inner wall of the annular supporting base (410), and an outer side of the annular supporting base (410) is configured to be in sealed contact with at least part of an inner wall of the connecting device (200). The blowout prevention device can prevent a well blowout accident from occurring when the pressure in an oil well where the oil extraction system is located suddenly increases.
Inventors:
JIANG LIN (CN)
DING BO (CN)
ZHAO XUEYANG (CN)
DING BO (CN)
ZHAO XUEYANG (CN)
Application Number:
PCT/CN2022/071058
Publication Date:
June 29, 2023
Filing Date:
January 10, 2022
Export Citation:
Assignee:
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD (CN)
International Classes:
E21B43/00; E21B33/10
Foreign References:
| CN208534447U | 2019-02-22 | |||
| CN213016277U | 2021-04-20 | |||
| CN111677474A | 2020-09-18 | |||
| CN202493239U | 2012-10-17 | |||
| CN109779562A | 2019-05-21 | |||
| US3939910A | 1976-02-24 | |||
| US5875841A | 1999-03-02 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
Download PDF:
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