Deep Penetration Electric Controlled Drilling Device

Abstract

The invention relates to the technical field of drilling and completion of petroleum and gas, in particular to a deep-penetration electronic control drilling device. The device comprises a ground control system and an underground control system, and further control a hydraulic pressure circulating system and a mechanical drilling system; the ground control system comprises a signal processing andtransmitting module and a ground power supply module; the underground control system comprises a signal processing and control module and an underground power supply module; and the signal processingand transmitting module can process received signals and transmit the signals to the signal processing and control module through a cable. A plurality of holes can be drilled in an oil layer close toa well directly, the drilling depth is long, the holes can effectively penetrate through a polluted belt and are clean, a compaction effect does not exist, the permeability of the holes is not reduced, completeness of a sleeve is ensured, a cement ring is not damaged, water channeling is not caused, requirements for yield increasing of a production well and injection increasing of an injection well are met, and field construction is simple.

Description

Technical field: [0001] The invention relates to the technical field of oil and gas drilling and completion, in particular to a deep-penetrating electric-controlled drilling device. Background technique: [0002] At present, the main domestic oil fields are basically in the middle and late stage of development, and the formation pressure is getting lower and lower. During the drilling and workover process, affected by the mud, the formation will inevitably be polluted, forming a pollution zone near the well. According to research, the pollution radius Generally 0.6 ~ 1.2m. At present, the main way to communicate with the near-wellbore formation is perforation, but the perforation technology has the following problems: 1. The depth is short. Currently, the 127 deep penetrating shaped charge with the strongest penetrating ability reaches a maximum ground penetration depth of 1.5m. It can only be used for casings with a size of 7″ or larger. At present, the commonly used cased...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a deep penetration electronically controlled drilling device, which can directly drill multiple holes in the oil layer near the wellbore, has a long drilling depth, and can effectively penetrate the polluted zone. It is clean, has no compaction effect, does not reduce the permeability of the hole, ensures the integrity of the casing, does not damage the cement sheath, and does not cause water channeling. It meets the needs of production well increase and injection well increase injection, and the on-site construction is simple

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