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A drilling and completion method for hot dry rock robotic explosive hydraulic fracturing

A composite fracturing and hydraulic fracturing technology, which is applied in earthwork drilling, wellbore/well components, and production fluids, etc., can solve problems such as difficulty in proportion and quantity control, failure to meet combustion conditions, and potential safety hazards. Reduce the risk of heat transfer short circuit, optimize the crack network, and reduce the effect of operating costs

Active Publication Date: 2020-07-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A drilling and completion method for hot dry rock robotic explosive hydraulic fracturing
  • A drilling and completion method for hot dry rock robotic explosive hydraulic fracturing
  • A drilling and completion method for hot dry rock robotic explosive hydraulic fracturing

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Embodiment Construction

[0037] This embodiment provides a hot dry rock robot explosive hydraulic composite fracturing drilling and completion system, including a ground control system, a robot 17, a drilling execution system, an explosive fracturing execution system, a hydraulic fracturing execution system, a directional execution system, and a heavy Into the execution system; the robot 17 is respectively connected to the drilling execution system, the explosive fracturing execution system, the hydraulic fracturing execution system, the directional execution system, and the reentry execution system. The robot is used for drilling, explosive fracturing, hydraulic Data collection and control of fracturing.

[0038] The surface port control system includes a data processing center, a surface data acquisition sensor, a drilling and completion controller, a surface signal transceiver 4, a blowout preventer 3, a coiled tubing wellhead device 2, a coiled tubing operating vehicle 9, an input device, and a storag...

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Abstract

The invention discloses a hot-dry rock robot explosion hydraulic composite fracturing well drilling and completion method. The hot-dry rock robot explosion hydraulic composite fracturing well drillingand completion method comprises the steps that a robot controls a reentrant tool to put down a drilling pipe string from a cluster type borehole inlet position, the drilling pipe string performs drilling operation on hot-dry rock double horizontal wells, and the drilling pipe string is pulled out by a coiled tubing operation vehicle after the drilling operation; the robot controls the reentrant tool to put down an explosion fracturing completion pipe string assembled on the ground from the cluster type borehole inlet position, and the robot drags the explosion fracturing completion pipe string and sequentially performs explosive fracturing at a plurality of fracturing points to complete the explosive fracturing operation; and the robot drags a hydraulic fracturing completion pipe string to a setting well depth position, fracturing fluid prolongs the length of an explosive fracturing crack under high pressure until the double horizontal wells communicate through the crack, and the hydraulic fracturing operation is completed. The robot technology is used in the drilling process for achieving intelligent closed-loop drilling, the cost of hot-dry rock drilling operation can be effectively reduced, a hot-dry rock crack network can be significantly optimized, and the risk of "heat transfer short circuit" is reduced.

Description

Technical field [0001] The invention belongs to the field of hot dry rock drilling and completion, and in particular relates to a hot dry rock micro wellbore robot explosion-hydraulic composite fracturing drilling and completion method that reduces the risk of "heat transfer short circuit". Background technique [0002] According to the survey and evaluation results of China's Ministry of Land and Resources and China Geological Survey in 2015, the amount of dry hot rock resources buried in the land area of ​​3,000-10,000 meters is equivalent to 856 trillion tons of standard coal, and the recoverable resources reach 17 trillion tons. Standard coal accounts for about 1 / 6 of the world's total hot dry rock resources. [0003] Dry hot rock is a dense and impermeable high-temperature rock mass without water or steam. It can be widely used for power generation, heating, and enhanced oil exploration. During the development process, it produces almost no pollutants such as nitrogen and sulf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B43/263
CPCE21B43/26E21B43/263
Inventor 朱海燕赵建国刘清友王昆鹏
Owner SOUTHWEST PETROLEUM UNIV
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