Electromechanical ash pouring tool for oil and gas well
An electromechanical technology for oil and gas wells, applied in wellbore/well components, earthwork drilling, sealing/package, etc., can solve problems such as unsafe use, high cost of explosive ash dumping tools, and inability to continuously dump ash, etc. Achieve the effect of low cost, reliable movement and continuous ash pouring
Inactive Publication Date: 2021-01-08
PETROCHINA CO LTD +1
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Problems solved by technology
[0003] In order to overcome the deficiencies of the existing impact and rupture disc-type ash dumping tools that cannot continuously dump ash, the explosive ash dumping tool has high cost, and is unsafe to use, the present invention provides an electromechanical ash dumping tool for oil and gas wells. The ash pouring tool can pour ash continuously, with low cost and safe operation
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[0010] The present invention will be further described below in conjunction with accompanying drawing:
[0011] Depend on figure 1 As shown, an electromechanical ash pouring tool for oil and gas wells includes an upper joint 1, the bottom of the upper joint 1 is connected to a motor housing 3, and the lower part of the motor housing 3 is connected to the ash barrel joint 13 through a connector 9, and the inside of the motor housing 3 There is a motor 2, and the motor 2 adopts the ZPN72 DC brushless series transmission planetary gear motor produced by Zhongda Company, with a rated voltage of 24V and a motor power of 120W. It has the characteristics of large torque, forward and reverse rotation, etc. The upper part of the motor 2 is connected with the cable, and the output shaft of the motor 2 is connected with a leading screw 5 through a shaft coupling 4, and the leading screw 5 is supported by a bearing 6. The lower end of the leading screw 5 is externally connected to the we...
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The invention provides an electromechanical ash pouring tool for an oil and gas well. The electromechanical ash pouring tool mainly solves the problems that an existing impact fracture disc type ash pouring tool cannot continuously pour ash, and an explosive ash pouring tool is high in cost and unsafe to use. The electromechanical ash pouring tool is characterized in that the bottom of an upper connector (1) is connected with a motor shell (3), wherein the lower portion of the motor shell (3) is connected with an ash barrel connector (13) through a connector (9), a motor (2) is arranged in themotor shell (3), an output shaft of the motor (2) is connected with a lead screw (5), the outer portion of the lead screw (5) is connected with a weighting piston (12), an axial sliding groove is formed in the side wall of the weighting piston (12), a limiting pin (10) is arranged in the sliding groove, and the outer side of the limiting pin (10) is fixed to the connector (9); and the bottom of the ash barrel connector (13) is connected with an ash barrel (14), and the bottom of the ash barrel (14) is connected with an ash barrel piston (16) through an ash barrel pin (15). The electromechanical ash pouring tool for the oil and gas well can continuously pour ash, and is low in cost and safe in running.
Description
technical field [0001] The invention relates to the field of oil fields, in particular to an electromechanical ash pouring tool for oil and gas wells. Background technique [0002] At present, there are two kinds of ash dumping tools commonly used in oilfields, including the impact rupture disc ash dumping tool and the explosive ash dumping tool. The impact rupture disc type ash dumping tool breaks the rupture disc through the impact hammer at the bottom, opens the cement slurry flow channel, and realizes ash dumping. The length of the ash tube is 5m, which can be transported by oil pipes or cables. When pouring ash many times, it is necessary to wait for the previous cement slurry to solidify, and it is impossible to pour ash continuously. The overall construction period is long and the cost is high; the piston of the explosive ash pouring tool passes through the connecting rod It is connected with the upper explosive bolt, when the explosive bolt is energized and fired, t...
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IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 于秋来郭景学蔡山李昌松李晨威
Owner PETROCHINA CO LTD