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A high temperature abrasive jet drilling system and drilling method

A kind of abrasive jet, high temperature technology, applied in abrasives, application of thermal energy drilling, sputtering coating and other directions, to achieve the effect of intensifying thermal cracking, increasing ROP, and improving oil and gas recovery.

Active Publication Date: 2022-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically relates to a high temperature abrasive jet drilling system and drilling method

Method used

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  • A high temperature abrasive jet drilling system and drilling method
  • A high temperature abrasive jet drilling system and drilling method
  • A high temperature abrasive jet drilling system and drilling method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0103] 1. Preparation of transition layer

[0104] (1) Nozzle base material cleaning: Use ion beam to bombard the nozzle (the material is hard alloy). The furnace pressure is 0.1Pa, the Ar gas flow rate is 100sccm, the ion source is 0.5Kw, the magnetron frequency is 1Kw, and the negative bias voltage is 35V for 40min.

[0105] (2) Preparation of Ti metal transition layer: double Ti targets are used. The pressure in the furnace is 0.1Pa, the Ar gas flow rate is 100sccm, the ion source is 0.5Kw, the magnetron frequency is 1Kw, the target power is 1Kw, the negative bias voltage is 35V, and the time is 5min.

[0106] (3) Preparation of TiC transition layer: double Ti targets are used. The pressure in the furnace is 0.1Pa, the flow rate of Ar gas is 100sccm, CH 4 The gas flow is 10sccm, the ion source is 0.5Kw, the magnetron frequency is 1Kw, the target power is 1Kw, the negative bias voltage is 35V, and the time is 5min.

[0107] (4) Preparation of TiCN transition layer: doubl...

Embodiment 1

[0115] The high-temperature abrasive jet drilling system includes a surface pump unit 1, a microwave generator 2, a coiled tubing 3, a waveguide 4, a microwave antenna 6, a heating chamber 9, a temperature sensor 7, a pressure sensor 8, a high-temperature abrasive jet device 10, etc., combined with Accompanying drawing 2 further introduces the flow process of technology:

[0116] 1. Drain the well, wash the well, and prepare for the operation;

[0117] 2. Utilize the waveguide 4 to connect the microwave antenna 6 to the heating cavity 9 at the end of the coiled tubing 3;

[0118] 3. Turn on the surface pump unit 1, and use the coiled tubing 3 to pump water, microwave strong absorbent and abrasive particles into the heating chamber 9;

[0119] 4. Turn on the microwave generating device 2, and the microwave antenna 6 starts to radiate the water and microwave strong absorbent in the heating chamber 9. The internal temperature and pressure are monitored by the temperature sensor...

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Abstract

The invention relates to a high-temperature abrasive jet drilling system and a drilling method in the field of petroleum exploration and development. The system components include: surface pump group, microwave generator, coiled tubing, waveguide, microwave antenna, heating chamber, temperature sensor, pressure sensor, high-temperature abrasive jet device, etc. The drilling method comprehensively considers the action of abrasive jet and rock pyrolysis, combines the principle of microwave heating, and realizes efficient rock breaking through the action of high-temperature abrasive jet on the rock at the bottom of the well. This method solves the problems of low ROP, short drill bit life, and poor rock breaking effect existing in deep hard formations and highly abrasive formations in existing conventional drilling technologies, and provides strong support for the efficient development of deep oil and gas resources in my country.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, and more specifically, to a high-temperature abrasive jet drilling system and a drilling method. Background technique [0002] At present, the old oilfields in the central and eastern part of my country have entered the late stage of development. The comprehensive water cut of the oil well has been greatly increased, and the production capacity has been gradually reduced. The remaining oil and gas resources in the complex superimposed basins in the west account for about 45% of the national total, and the proven rate is less than 20%, showing huge potential for exploration and development. Compared with the basins in eastern China, the oil and gas resources in the western basins are more concentrated in the deep strata (more than 4500m), accounting for about 80% of the oil and gas resources in the western complex superimposed basins. However, the rock in deep formations is m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/15B24C1/04B24C5/04C23C14/35C23C14/16C23C14/06
CPCE21B7/15B24C1/045B24C5/04C23C14/35C23C14/16C23C14/0635C23C14/0664
Inventor 耿黎东王敏生思娜蒋海军叶海超光新军姚云飞
Owner CHINA PETROLEUM & CHEM CORP
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