Two-delivery delivering and fishing device
A technology of the main body and the middle dial, which is used in wellbore/well components, earth-moving drilling, etc., can solve the problem of high labor intensity and large amount of labor. Generally, it takes four times to lift the tool for two layers, and six times for three layers of wells. , can not change the delivery order and other issues, to achieve the effect of reducing time and avoiding wrong fishing
Inactive Publication Date: 2018-08-17
PETROCHINA CO LTD +1
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Problems solved by technology
Although the single throwing arm thrower has the advantages of simple structure, convenient debugging, flexible use and high reliability, it can only complete the throwing or fishing of a single plug in the next trip, and the fishing head needs to be replaced after fishing or throwing. send head
After the test operation of the water injection well is completed, the workload of deployment and construction is heavy. Generally, two-layer wells need to be lifted and lowered four times, and three-layer wells need to be lifted and lowered six times. Using a single-arm thrower is cumbersome and labor-intensive.
Although the double throwing arm thrower can complete the replacement of a layer of nozzles at a time, it can only achieve one pull and one drop work, and at the same time it cannot change the delivery sequence, and the working method is not flexible enough
Method used
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[0009] The present invention will be further described below in conjunction with accompanying drawing:
[0010] Depend on figure 1 As shown, a two-throwing fishing device includes a throwing arm main body 1, an upper dial 4 is connected to the upper part of the throwing arm main body 1, and a finger is provided on the upper dial 4 . The upper dial 4 is connected with the upper delivery arm 2, and the finger can drive the upper delivery arm 2 to open when the upper dial 4 rotates. The middle part of the main body 1 of the delivery arm is connected with a middle dial 5, and the middle dial 5 is provided with two claws. The middle dial 5 is connected with the middle delivery arm 3, the bottom of the delivery arm main body 1 is connected with the lower dial 7, the lower dial 7 is provided with a claw, and the lower dial 7 is connected with Guide claw 8. There is a groove on the inner side wall of the main body 1 of the delivery arm, and a strong magnet 6 is built in the groove....
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The invention relates to a two-delivery delivering and fishing device. The two-delivery delivering and fishing device mainly solves the problem that an existing delivering and fishing device can onlyachieve one fishing and one delivering. The two-delivery delivering and fishing device is characterized in that the upper portion of a delivery arm body (1) is connected with an upper thumbing wheel (4), an upper delivery arm (2) is connected to the upper thumbing wheel (4), the middle of the delivery arm body (1) is connected with a middle thumbing wheel (5), a middle delivery arm (3) is connected to the middle thumbing wheel (5), the bottom of the delivery arm body (1) is connected with a lower thumbing wheel (7), and a guide jaw (8) is connected to the lower thumbing wheel (7). According tothe two-delivery delivering and fishing device, two packers can be delivered through one time of well descending, the time for well measuring, adjusting, delivering and fishing work is greatly shortened, each delivery arm is independently started sequentially in the delivering and fishing process, and the situations such as mistaken fishing and clamping are avoided.
Description
technical field [0001] The invention relates to the field of oil fields, in particular to a two-throw thrower. Background technique [0002] At present, most oilfields in China use conventional eccentric pipe strings to implement layered water injection, and single-arm throwers and double-arm throwers are used for construction during test construction. Although the single throwing arm fisher has the advantages of simple structure, convenient debugging, flexible use and high reliability, it can only complete the throwing or fishing of a single plug in the next trip, and the fishing head needs to be replaced or thrown Send head. After the test operation of the water injection well is completed, the workload of deployment and construction is heavy. Generally, the tool needs to be lifted and lowered four times for the two-layer well, and six times for the three-layer well. The operation of the single-arm throwing device is cumbersome and labor-intensive. Although the double th...
Claims
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IPC IPC(8): E21B31/12E21B31/06E21B23/00
CPCE21B23/00E21B31/06E21B31/12
Inventor 张云夏青刘小勇张平王东王玉凤平旭东张明鹤马智鹏
Owner PETROCHINA CO LTD