Wellhead remote plug connector, and remote wellhead connection and operation method of blowout preventer

Abstract

The invention discloses a wellhead remote plug connector, and a remote wellhead connection and operation method of a blowout preventer. The device is used for realizing remote wellhead automatic alignment of a blowout preventer pipe string, remote quick connection locking, remote fast unlock release, remote control of ball pitching, remote control of rapid pressure test self-inspection, and remoteopening and closing of wellhead, and used for replacing a traditional connection mode and manual alignment, tightening and unscrewing by an operator on a wellhead platform when the blowout preventerpipe string is connected and dismounted at a wellhead in an alignment manner, and a working mode including manual stop valve, manual ball throwing and manual opening and closing of wellhead valve in rapid pressure testing. According to the wellhead remote plug connector, operators do not need to climb up and down a higher wellhead platform for manual operation, so that the operators are far away from a wellhead high-pressure area for safe construction operation, the operation efficiency is improved, the operation cost is reduced, the labor intensity of the operators and the safety risk of high-altitude high-pressure area operation are reduced, and the wellhead operators are reduced.

Description

technical field [0001] The invention relates to the technical field of blowout preventers, in particular to a wellhead remote plug connector and a remote wellhead connection and operation method of the blowout preventer. Background technique [0002] As the development of new wells in oil and gas fields is dominated by horizontal wells, and the perforation and fracturing of horizontal wells is mainly based on multi-stage perforation and fracturing of pumped cable bridge plugs, this type of operation has become the main operation of multi-stage perforation and fracturing in horizontal wells in oil and gas fields method, especially the best choice for industrial fracturing operations. However, the problem that cannot be ignored is that in this type of operation, the wellhead platform is high, the union nut of the blowout preventer is heavy, and the union nut is tightened and disassembled frequently. It is common to drag three or more wellhead zipper alternate operations, whic...

AI Technical Summary

Problems solved by technology

When aligning the blowout preventer string with the wellhead, due to the small structural characteristics of the union itself, it requires long-distance coordination and cooperation between the wellhead operator and the crane driver to complete the alignment insertion, which is time-consuming and laborious. Tightening and removing the union nut is not only labor intensive Large and time-consuming, there are also unsafe factors for climbing up and down the high wellhead platform, and the repetition frequency is high. More importantly, there is high pressure in each wellhead well, and the operators are always working in the high pressure area, which has certain potential safety risks. At the same time, people climb up and down the platform, manually tighten and disassemble the union nut, which has low operation efficiency and high operation cost

[0003] In addition, the rapid pressure test component is an independent part of the traditional blowout preventer. It is equipped in the general blowout preventer, but many operating teams do not install it in actual operations. It is inconvenient to operate on the wellhead platform, such as difficulty in alignment, difficulty in tightening and removing the union nut, difficulty in manually switching the needle valve at the pressure test port, etc.

At the same time, before the pumping bridge plug is put in place for fracturing, balls must be thrown to block the bridge plug to complete the fracturing operation. The on-site operation is to manually throw the ball into the well on the wellhead platform when the blowout preventer is transferred from the wellhead to the ground operation area to replace the perforating gun. , there is also a security risk

The top valve of many fracturing wellhead devices is a manual gate valve, which must be manually closed before fracturing, and must be manually opened when the perforating gun goes down the well before perforation. The fracturing wellhead device of the hydraulic control gate valve can remotely control the opening and closing of the well, but the price of the hydraulic control gate valve and the hydraulic control system is very high

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