A fishable bridge plug
A bridge plug and lateral sliding technology, applied in wellbore/well components, sealing/packaging, earth-moving drilling, etc., can solve the problems of unsealing and fishing, increasing the process of lowering steel balls, etc.
Active Publication Date: 2021-11-05
东营市宏远测井仪器配件有限责任公司
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the present invention provides a fishable bridge plug, which solves the problems of unsealing and fishing and increasing the lowering process of steel balls
Method used
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Embodiment
[0026] Such as Figure 1-6As shown, the embodiment of the present invention provides a fishable bridge plug, including a guide head 1, the guide head 1 is internally fixedly connected to the main pipe 2, and the right part of the outer wall of the main pipe 2 is laterally slidably connected to the first main pressure ring 3, The right part of the outer wall of the main pipe 2 is laterally slidably connected to the first slip fixing ring 4, and the outer wall of the first slip fixing ring 4 is evenly and fixedly connected with multiple sets of slip pieces 26 of the first part, and the outer wall of the main pipe 2 is The middle right part is horizontally slidably connected to the first conical auxiliary ring 5, and the left side of the first conical auxiliary ring 5 is uniformly fixedly connected with multiple sets of first sliding rods 18 of the first part, and the first sliding rods 18 of the first part are left The side ends are fixedly connected with the first limiting colu...
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The invention provides a fishable bridge plug, which relates to the technical field of petroleum exploration equipment, and includes a guide head, the inside of which is fixedly connected to a main pipe, and the right part of the outer wall of the main pipe is laterally slidably connected to the first main pressure ring, and the main pipe The middle right part of the outer wall is laterally slidably connected to the first slip fixing ring, and the outer wall of the first slip fixing ring is evenly and fixedly connected to multiple sets of first part slips, and the middle right part of the main pipe outer wall is laterally slidably connected to the first slip fixing ring. The tapered auxiliary ring slides upwards through the first tapered auxiliary ring fixed by the T-shaped structure composed of another part of the second limiting column and the second sliding rod that is slidingly connected inside the T-shaped groove, so that the vertebral body is in line with the first The slips of the slip fixing ring loosen the contact, so that the slips of the first slip fixing ring also loosen the contact with the inner wall of the oil pipe, and the recovery can be completed by pulling back the bridge plug with the ground extraction equipment, realizing the bridge The automatic release setting of the plug can be fished, which is worthy of vigorous promotion.
Description
technical field [0001] The invention relates to the technical field of bridge plugs, in particular to a fishable bridge plug. Background technique [0002] The permanent bridge plug was formed in the early 1980s. Because of its less construction process, short period and accurate sealing position, it has been widely used in oil and gas well sealing as soon as it came out, basically replacing the previous cement plug sealing layer. The process technology has become the main sealing layer technology for oil test wells to seal the tested layers and carry out back-testing. For special formations such as dry formations, water formations, gas formations, and abnormally high pressures that appear during oil testing in mid-to-shallow formations, in order to facilitate subsequent oil testing and seal abandoned formations, such bridge plugs are usually used for sealing. Some wells with no development plans in the short term are closed with permanent bridge plugs. In addition, the br...
Claims
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IPC IPC(8): E21B33/134
CPCE21B33/134
Inventor 刘泉亭盛江飞张磊晶
Owner 东营市宏远测井仪器配件有限责任公司