Oilfield injection-production well hole finding ultrahigh-pressure deep-penetrating reaming equipment

Abstract

The invention relates to the technical field of oilfield injection and production well development, in particular to ultrahigh-pressure deep-penetrating reaming equipment for hole finding of an oilfield injection and production well. Comprising a high-pressure pipeline roller, a bearing steel cable winding and unwinding roller, a high-pressure sand adding device, a leading-in device, an ultrahigh-pressure jet device, a height fine adjustment device, an angle adjustment device, a combined clamp holder, a wellhead blowout preventer, a hydraulic station, a liquid preparation water tank, a control box and a crane. The leading-in device is mounted on the crane, and a high-pressure pipeline of the high-pressure pipeline roller and a high-strength steel cable of the bearing steel cable winding and unwinding roller penetrate through the leading-in device and are connected with the ultrahigh-pressure jet device; a high-pressure sand adding device is connected to the upper portion of the ultrahigh-pressure jet device, and an angle adjusting device, a height fine adjusting device and a combined clamping device are sequentially arranged below the high-pressure sand adding device. A liquid flow channel can be improved, and the oil and gas reservoir utilization degree can be improved; and a borehole pollution area is penetrated, damage to a near-wellbore zone is relieved, and the stratum flow conductivity is improved.

Description

technical field [0001] The invention relates to the technical field of oilfield injection-production well development, in particular to an ultra-high pressure deep penetration reaming equipment for oilfield injection-production well drilling. Background technique [0002] Oil wells cause formation damage during multiple operations in the drilling and completion process, and the damage is particularly serious in the perforation process. Most water injection wells have different degrees of near-well pollution zones in the later stage of injection, which reduces the injection rate of oil wells. The increase of the injection pressure results in the increase of energy loss, the increase of the skin coefficient of the production well, and the large amount of remaining reserves cannot be effectively exploited. In order to enhance oil and gas recovery, fracturing is required, which is often costly, economically uneconomical, and has a short lifespan. [0003] Therefore, in the pres...

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Problems solved by technology

[0002] Formation damage is caused by multiple operation links in the drilling and completion process of oil wells, especially in the perforation link, and most water injection wells have different degrees of near-wellbore contamination zones in the late stage of injection, which reduces the injection rate of oil wells. capacity, increased injection pressure, increased energy loss, increased skin coefficient of production wells, and a large number of remaining reserves could not be effectively exploited

To enhance oil and gas recovery, fracturing is required, often costly, economically uneconomical and short-lived

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