Robot-adopting explosive hydraulic compound fracturing drilling and completion system for hot-dry rocks

Abstract

A robot-adopting explosive hydraulic compound fracturing drilling and completion system for hot-dry rocks comprises a ground control system, a robot, a drilling execution system, an explosive fracturing execution system, a hydraulic fracturing execution system, a directional execution system and a reentry execution system. The ground control system comprises a data processing center, a ground dataacquisition sensor, a well drilling completion controller, a ground signal transmitting-receiving device, a blowout preventer, a continuous oil pipe well mouth device, a continuous oil pipe operationtruck, an input device and a storage unit. The robot comprises a well bottom data acquisition sensor, a CPU, a drilling control module, a well bottom signal transmitting-receiving device, a reentry tool control module, a directional tool control module, an explosive fracturing control module and a hydraulic fracturing control module. By adopting the robot technology, intelligent closed-loop welldrilling is achieved, the operation cost is effectively reduced, a burning explosion and a hydraulic compound fracturing technology are adopted, a hot-dry rock fracture network can be remarkably optimized, and the risk of 'heat transfer short circuit' is reduced.

Description

technical field [0001] The invention belongs to the technical field of well drilling and completion, and in particular relates to a drilling and completion system for hot dry rock robotic explosive hydraulic composite fracturing. Background technique [0002] According to the survey and evaluation results of the Ministry of Land and Resources of China and the China Geological Survey in 2015, the amount of hot dry rock resources buried at a depth of 3,000-10,000 meters in the national land area is equivalent to 856 trillion tons of standard coal, and the recoverable resources amount to 17 trillion tons. Standard coal accounts for about 1 / 6 of the world's total hot dry rock resources. [0003] Hot dry rock is a dense and impermeable high-temperature rock mass without water or steam. It can be widely used in power generation, heating, enhanced oil extraction, etc. During the development process, almost no pollutants such as nitrogen and sulfur oxides are produced, and it is not...

AI Technical Summary

Problems solved by technology

[0008] (1) It is difficult to control the mixing ratio and quantity of fuel, oxidant and water, or even fail to meet the combustion conditions;

[0009] (2) Fuel, oxidant and water are mixed in proportion in advance, and the mixture may burn on the ground and during the process of lowering, which poses a serious safety hazard;

[0011] (4) Existing robots use fast-curing liquid explosives, which are difficult to transport and cause great safety hazards during the transport process;

[0012] (5) Drilling and completion operations for multi-branch wells cannot be realized

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