Multi-oil-cylinder lifting and rotation integrated type ocean hydraulic workover rig

Abstract

The invention provides a multi-oil-cylinder lifting and rotation integrated type ocean hydraulic workover rig. According to the workover rig, a sliding base module is installed on a guide tube frame platform, a blowout preventer unit is installed in the middle of a lower sliding base of the sliding base module, a vertical platform, a hydraulic power mechanism and a lifting module are installed on an upper sliding base of the sliding base module, an operation platform is installed on the upper portion of the lifting module, a tong rotating arm is connected with an installation support and the operation platform, a telescopic pull rod is connected with the upper sliding base and the operation platform, and the hydraulic power mechanism is connected with a main operation table, an auxiliary operation table and a blowout preventer driller console through pipelines and wires, wherein the main operation table, the auxiliary operation table and the blowout preventer driller console are on the operation platform. The multi-oil-cylinder lifting and rotation integrated type ocean hydraulic workover rig is suitable for the ocean engineering well workover and completion operation field, and with cooperation of a supporting platform, the multi-oil-cylinder lifting and rotation integrated type ocean hydraulic workover rig can provide underground operation services for production platform oil and gas wells under the circumstance that an ocean production platform is not provided with a workover rig module or after a supporting platform is in place, a rear cantilever beam is limited in travel and cannot cover an operating well set.

Description

technical field [0001] The invention relates to the field of offshore oil drilling, production, workover and well completion equipment, in particular to a multi-cylinder lifting and rotating integrated marine hydraulic workover machine. Background technique [0002] Many production platforms in the existing offshore engineering workover field cannot provide their own workover rigs due to the limited platform load and operating area. Large support platforms or offshore module workover rigs are bulky and costly to relocate and hoist. The marine module workover rig is bulky or the stroke of the cantilever beam of the decoration rig on some support platforms is limited, and the support platform cannot be operated close to the production platform. Using drilling platforms or large-scale support platforms for operations requires high expenses and limited available resources, resulting in high development costs for oil companies and even affecting oil field production. [0003] At...

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Problems solved by technology

[0004] 1. For example, the offshore workover rigs with the structural model of ordinary land workover rigs mainly produced by the Fourth Machinery Factory of Jianghan Petroleum Administration Bureau, Baoji Petroleum Machinery Factory and Nanyang Petroleum Machinery Factory in the early days have complex structures and large shapes. When the operating area or carrying capacity of the platform is limited, it is impossible to enter the site to carry out operations, and the manufacturing, handling and installation costs are relatively high

[0005] 2. For example, the patent No. CN101725326A invented by Shengli Oilfield Shanyou Petroleum Technology Co., Ltd. is a modular offshore platform hydraulic energy storage workover rig, which adopts a donkey head installed on the upper end of a single main hydraulic cylinder, and the front ends of the donkey head are symmetrical on both sides Two crown block fixed pulleys are installed, and two fixed pulleys are installed in the middle of the tripod. The crown block pulley and the fixed pulley are connected to the hook through the wire rope to realize the lifting and lowering of the pipe string, but the rotation operation cannot be performed. limited range

[0006] 3. Research on the marine hydraulic lifting workover rig proposed in Tianjin Science and Technology 2011 (5): 31-33. A marine hydraulic lifting workover rig is designed, which uses 2 or more sets of synchronous hydraulic cylinders to lift and swim The beam cooperates with multiple sets of fixed pulleys to realize the lifting of the hook of the traveling block. The rotation system still uses a power tap, and the integration of the rotation function module is low.

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