Air drilling atomizing agent and application thereof

An air drilling and atomizing agent technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of low drilling efficiency, poor cuttings carrying, downhole explosion, etc.

Inactive Publication Date: 2015-02-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In drilling practice, it often happens that the drilling production cannot be carried out smoothly, ranging from poor cuttings carrying, low drilling efficiency, to wellbore blockage and well wall collapse, causing pipe sticking and downhole explosion accidents, making the advantages of air drilling ineffective. It is fully reflected that in order to solve a series of complicated situations in the air drilling process, it is necessary to convert dry air drilling into atomization drilling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Instrument

[0019] Self-made downhole operation simulation device, the device is mainly composed of simulated drill pipe, simulated wellbore, feeding funnel, various pipelines, gas source, and gas flowmeter. The simulated wellbore is a closed flow system composed of inner and outer tubes, the inner tube is a steel tube, and the outer tube is a transparent plexiglass tube. Its structural size is designed according to the downhole operation equipment on site. For the convenience of disassembly, the outer cylinder and the inner cylinder are connected by flanges. Outer cylinder: the working pressure is 2MPa, the working temperature is room temperature, the inner diameter is 40mm, the length is 150cm, and the material is transparent organic glass tube. Inner cylinder: working pressure 2MPa, working temperature at room temperature, outer diameter 25mm, length 20cm, made of stainless steel pipe. The feeding funnel device mainly consists of a conical nozzle with an inner ...

Embodiment 2

[0025] 1. Instrument

[0026] Self-made downhole operation simulation device, the device is mainly composed of simulated drill pipe, simulated wellbore, feeding funnel, various pipelines, gas source, and gas flowmeter. The simulated wellbore is a closed flow system composed of inner and outer tubes, the inner tube is a steel tube, and the outer tube is a transparent plexiglass tube. Its structural size is designed according to the downhole operation equipment on site. For the convenience of disassembly, the outer cylinder and the inner cylinder are connected by flanges. Outer cylinder: the working pressure is 2MPa, the working temperature is room temperature, the inner diameter is 40mm, the length is 150cm, and the material is transparent organic glass tube. Inner cylinder: working pressure 2MPa, working temperature at room temperature, outer diameter 25mm, length 20cm, made of stainless steel pipe. The feeding funnel device mainly consists of a conical nozzle with an inner ...

Embodiment 3

[0032] 1. Instrument

[0033] Self-made downhole operation simulation device, the device is mainly composed of simulated drill pipe, simulated wellbore, feeding funnel, various pipelines, gas source, and gas flowmeter. The simulated wellbore is a closed flow system composed of inner and outer tubes, the inner tube is a steel tube, and the outer tube is a transparent plexiglass tube. Its structural size is designed according to the downhole operation equipment on site. For the convenience of disassembly, the outer cylinder and the inner cylinder are connected by flanges. Outer cylinder: the working pressure is 2MPa, the working temperature is room temperature, the inner diameter is 40mm, the length is 150cm, and the material is transparent organic glass tube. Inner cylinder: working pressure 2MPa, working temperature at room temperature, outer diameter 25mm, length 20cm, made of stainless steel pipe. The feeding funnel device mainly consists of a conical nozzle with an inner ...

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PUM

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Abstract

The invention relates to an air drilling atomizing agent and an application thereof. The atomizing agent is prepared from sodium dodecyl benzene sulfonate, nonionic polyacrylamide, polyoxyethylene octyl phenol ether and calcium lignosulphonate according to the mass ratio of 3 to 1 to 1 to 3. The air drilling atomizing agent is applied to a dry air drilling process; and once liquid is discharged from stratum, dry air drilling is transformed into air-atomizing drilling when air discharge is not enough and stratum liquid flows into a borehole is difficult to process in general. The adsorbing capacity of the air drilling atomizing agent on rock debris surface is greater than or equal to 2%; the atomizing volume is greater than or equal to 1000cm<3> / g; the suction volume is greater than or equal to 1.0g / s on the basis of the air speed of 15m / s; the liquid discharged from the stratum can be fully emulsified; annular air is prompted and kept in atomized stable flow; the cutting-carrying capacity and the water carrying capacity of the air flow can be enhanced; shale hydration is inhibited; the well wall is stabilized; and the air drilling can be ensured to be smoothly carried out.

Description

technical field [0001] The invention relates to an air drilling atomizer and its application, in particular to an atomizer suitable for low-pressure air drilling technology. Background technique [0002] Air drilling technology is one of the most commonly used low-pressure drilling technologies. [0003] Compared with conventional drilling fluids, gas drilling has the advantages of fast speed, short period, and low overall cost. In air drilling, the flow of rock in the annular space of the wellbore is a typical gas, liquid, and solid multiphase flow. Its mechanism and The laws are very complex. In drilling practice, it often happens that the drilling production cannot be carried out smoothly, ranging from poor cuttings carrying, low drilling efficiency, to wellbore blockage and well wall collapse, causing pipe sticking and downhole explosion accidents, making the advantages of air drilling ineffective. It is fully reflected that in order to solve a series of complicated si...

Claims

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Application Information

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IPC IPC(8): C09K8/38C09K8/035
CPCC09K8/38C09K8/035
Inventor 夏焱袁光杰申瑞臣庄晓谦金根泰班凡生李景翠兰海峰路立君董胜祥付利
Owner BC P INC CHINA NAT PETROLEUM CORP
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