Hydraulic setting tool

Abstract

The invention relates to a hydraulic setting tool which comprises an upper joint and a mandrel connected with the upper joint. The hydraulic setting tool is characterized by further comprising a piston pushing mechanism and a converting mechanism which are arranged outside the mandrel, the piston pushing mechanism comprises a piston hermetically sleeved outside the mandrel, a converting sleeve connected with the outside of one end of the piston, and a sliding sleeve connected with the upper joint, the mandrel and the piston are fixed through a shearing pin, the sliding sleeve and the upper joint are fixed circumferentially, the converting mechanism comprises a piston and an adjusting sleeve sleeved outside the converting sleeve, and at least four pressure transmitting holes are arranged on the mandrel. The hydraulic setting tool has the advantages that by matching the shearing pin between the mandrel and the piston and the converting sleeve and the adjusting sleeve of the setting tool with a packer at the top, setting of the packer in advance can be effectively prevented to enable setting operations to be reliable and effective. The hydraulic setting tool can be matched with various packers such as a packer at the top of an outer-layer sand prevention tool and a sand setting packer, and is low in manufacturing cost, simple in assembly program, and convenient, safe and reliable in on-site operation process.

Description

technical field [0001] The invention belongs to the technical field of oil field development and production, and in particular relates to a hydraulic setting tool used in gravel filling well completion and sand control operations. Background technique [0002] At present, in the development of oilfields, with the increase of drilling and production of deep wells and complex wells, especially the continuous innovation of well completion technology, higher requirements are put forward for the functions and use of well completion tools. Hydraulic setting tools are the direct drive mechanism for packer setting in gravel packing sand control operations. Traditional setting tools mainly include mechanical setting tools, cable setting tools and hydraulic setting tools. , the aforementioned setting tools have the following technical bottlenecks. The reliability of mechanical setting tools is low, especially for some highly deviated wells, the packer cannot be completely set; the ca...

AI Technical Summary

Problems solved by technology

The reliability of mechanical setting tools is low, especially for some highly deviated wells, the packer cannot be completely set; the cable setting tool needs to be lowered into the cable, which is extremely inconvenient for construction and has high operating costs; hydraulic setting is used During tool construction, due to the complex well conditions, it is easy to encounter resistance during the process of running the packer. If there are no safeguards, there will be a risk of early setting

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