Polar region air drilling circulation system and polar region drilling integrated equipment

Abstract

The utility model relates to a polar region air drilling circulation system and polar region drilling integrated equipment. The system comprises an air compressor used for compressing air, an air storage tank connected with the air compressor and used for storing high-pressure air, a freezing type drying machine connected with the air storage tank and used for conducting primary drying on the high-pressure air, and an adsorption type drying machine connected with the freezing type drying machine and used for conducting secondary drying on the high-pressure air. The air conditioner is connected with the adsorption type dryer and used for cooling high-pressure air, the air inlet pipeline is connected with an air outlet of the air conditioner and used for conveying high-pressure air flow to the drill bit, and the exhaust pipeline is connected with the drill bit and used for exhausting. The integrated device is suitable for drilling operation with water shortage, drought or environmental protection requirements in polar regions, deserts and the like, traditional liquid circulating media are prone to being limited by environmental conditions, the system can effectively solve the problems, and the integrated device can also be used for drilling operation under special geological conditions such as frozen soil and salt layers.

Description

Technical Field

[0001] The utility model relates to the technical field of polar drilling, and particularly relates to a polar air drilling circulation system and a polar drilling integrated device. Background Art

[0002] The primary task of the polar system device is to adapt to the extreme Antarctic climate environment, including conditions such as extremely cold, strong winds, strong magnetism, low air pressure, and low oxygen. The design should take into account factors such as the cold resistance of the system, wind resistance, anti-magnetism, and operating stability in low air pressure and low oxygen environments to ensure that the system can operate continuously and stably under polar conditions. In the polar environment, the problem that traditional media are prone to icing in low-temperature environments is likely to occur, and temperature control technology is the key to realizing air circulation drilling. Summary of the Utility Model

[0003] In view of this, the utility model provides a polar air drilling circulation system and a polar drilling integrated device, aiming to solve the problems existing in the prior art.

[0004] Specifically, a polar air drilling circulation system of the utility model includes:

[0005] An air compressor for compressing air, a gas storage tank connected to the air compressor for storing high-pressure gas, a refrigerated dryer connected to the gas storage tank for primary drying of high-pressure air, an adsorption dryer connected to the refrigerated dryer for secondary drying of high-pressure air, a cooler connected to the adsorption dryer for cooling high-pressure air, an inlet pipeline connected to the outlet of the cooler for delivering high-pressure air flow to the drill bit, and an exhaust pipeline connected to the drill bit for exhausting gas.

[0006] On the basis of the above solution, it further includes: a pre-filter for filtering provided on the input pipeline of the refrigerated dryer and a post-filter for filtering provided on the output pipeline of the adsorption dryer.

[0007] On the basis of the above solution, it further includes: a sensor assembly for monitoring the flow rate, pressure, temperature, and humidity of high-pressure air provided on the inlet pipeline.

[0008] On the basis of the above solution, the sensor assembly includes:

[0009] A vortex flowmeter for monitoring the flow rate of high-pressure air;

[0010] A pressure transmitter for monitoring the pressure inside the inlet pipeline;

[0011] A thermometer for monitoring the temperature inside the inlet pipeline;

[0012] and a dew point meter for monitoring the humidity in the intake pipeline.

[0013] On the basis of the above solution, the air temperature at the outlet of the air conditioner ≤ -5°C.

[0014] On the basis of the above solution, it further includes: a container for integrally installing the polar air drilling circulation system.

[0015] On the basis of the above solution, a sled for sliding is provided at the bottom of the container.

[0016] In addition, the present utility model also provides a polar drilling integrated device for polar ice layer drilling, including:

[0017] The above-mentioned polar air drilling circulation system for primary drilling in the borehole;

[0018] A polar drilling fluid circulation integrated system for secondary drilling in the borehole to complete core drilling;

[0019] A polar drilling rig site power integrated system for providing power support for the polar air drilling circulation system and the polar drilling fluid circulation integrated system;

[0020] And a drilling rig system for completing core drilling in cooperation with the polar air drilling circulation system, the polar drilling fluid circulation integrated system, and the polar drilling rig site power integrated system.

[0021] The present utility model is composed of parts such as an air compressor, a cooling system, and a control system, which completes the compression, drying, and cooling of air, and monitors the high-pressure air flow rate, pressure, temperature, and humidity through the control system. The present utility model is a set of drilling supporting systems developed for low-temperature environments represented by the polar regions, using air as the circulating medium to solve the problem that traditional media are prone to icing in low-temperature environments and ensure the smooth progress of polar drilling work. Description of the Drawings

[0022] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0023] Figure 1 It is a schematic structural diagram of the polar air drilling circulation system in Embodiment 1;

[0024] Figure 2 It is a schematic structural diagram of the polar drilling integrated device in Embodiment 2. Detailed Embodiments

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0026] Embodiment 1

[0027] As shown Figure 1 in the figure, the present application provides a specific implementation manner of a polar air drilling circulation system. The polar air drilling circulation system includes an air compressor 1-1 disposed in a box for compressing air, a gas storage tank 1-2 connected to the air compressor 1-1 for storing high-pressure gas, a refrigerated dryer 1-3 connected to the gas storage tank 1-2 for primary drying of high-pressure air, an adsorption dryer 1-4 connected to the refrigerated dryer 1-3 for secondary drying of high-pressure air, a cooler 1-5 connected to the adsorption dryer 1-4 for cooling high-pressure air, an inlet pipeline 1-6 connected to the outlet of the cooler 1-5 for delivering high-pressure air flow to the drill bit, and an exhaust pipeline 1-7 connected to the drill bit for exhausting gas.

[0028] Specifically, due to the limitation of the polar environmental temperature, the air temperature at the outlet of the cooler 1-5 should be ≤ -5°C.

[0029] As a specific implementation, the polar air drilling circulation system 1 further includes a pre-filter 1-9 for filtering disposed on the input pipeline of the refrigerated dryer 1-3 and a post-filter 1-10 for filtering disposed on the output pipeline of the adsorption dryer 1-4.

[0030] As a specific implementation of the polar air drilling circulation system 1, it further includes a sensor assembly 1-8 disposed on the inlet pipeline 1-6 for monitoring the flow rate, pressure, temperature, and humidity of high-pressure air. Specifically, the sensor assembly 1-8 includes a vortex flowmeter for monitoring the flow rate of high-pressure air, a pressure transmitter for monitoring the pressure in the inlet pipeline 1-6, a thermometer for monitoring the temperature in the inlet pipeline 1-6, and a dew point meter for monitoring the humidity in the inlet pipeline 1-6.

[0031] Intelligent control is an important means to improve the performance of polar system devices. By integrating technologies such as sensors, controllers, and communications, real-time monitoring, automatic adjustment, and remote control of the system can be achieved. Intelligent control can reduce maintenance costs and save manpower, and improve the operating efficiency of the system. Among them, means such as remote control can adopt conventional means of existing technologies and do not belong to the innovation points of the present utility model, so they will not be elaborated here.

[0032] The polar air circulation drilling technology has the advantages of fast drilling speed, low energy consumption, and can take continuous core samples without pulling out the drill, which can effectively avoid the loss of snow layers.

[0033] Embodiment 2

[0034] Based on the device in Embodiment 1, the present application provides a specific implementation manner of a polar drilling integrated equipment.

[0035] As Figure 2 shown, a polar drilling integrated equipment for polar ice layer drilling includes:

[0036] The polar air drilling circulation system 1 for primary drilling in the borehole;

[0037] The polar drilling fluid circulation integrated system 2 for secondary drilling in the borehole to complete core drilling;

[0038] The polar drilling rig site power integrated system 3 for providing power support for the polar air drilling circulation system 1 and the polar drilling fluid circulation integrated system 2;

[0039] And the drilling rig system 7 for completing core drilling used in cooperation with the polar air drilling circulation system 1, the polar drilling fluid circulation integrated system 2, and the polar drilling rig site power integrated system 3.

[0040] As Figure 2 shown, specifically, the polar air drilling circulation system 1, the polar drilling fluid circulation integrated system 2, and the polar drilling rig site power integrated system 3 are respectively integrated in containers for application in Antarctica. Specifically, a polar drilling integrated equipment includes a first container structure 4, a second container structure 5, and a third container structure 6. The polar air drilling circulation system 1 in Embodiment 1 is arranged in the first container structure 4, the polar drilling fluid circulation integrated system 2 in Embodiment 1 is arranged in the second container structure 5, the polar drilling rig site power integrated system 3 in Embodiment 1 is arranged in the third container structure 6, a sled structure for transportation and movement on snow or ice is arranged at the bottom of the container structure, and a heater is arranged inside the container for heating to keep the equipment at the operating temperature. (The sled structure and the heater are not shown in the figure)

[0041] The polar air drilling circulation system is integrated within a 20-foot container structure and fixed onto a sled for transportation. A heater is installed inside the container structure to ensure that the internal temperature of the container reaches 0 - 5°C when starting the air compressor 1-1.

[0042] The main design objectives of the air drilling circulation system are as follows:

[0043] Name Index Number of air drilling circulation systems 1 set Air pressure dew point -40℃ Air temperature at the outlet of the air conditioner ≤-5℃ Flow rate <![CDATA[10 Nm 3 / min]]> Pressure 1.5 MPa Low temperature resistance of the equipment ≤ -45°C (overwintering in Antarctica) Volume Can be integrated into a 20-foot container Weight Single-unit transportation mass does not exceed 4 t

[0044] Among them, the air compressor 1-1 is a screw air compressor. The refrigerated dryer 1-3 can reduce the pressure dew point to 2 - 10°C, with the air temperature entering the refrigerated dryer 1-3 ≤ 45°C. The adsorption dryer 1-4 is a slightly heated regenerative adsorption dryer, which requires less energy consumption, has a smaller volume, a lower outlet dew point temperature, and a moderate working cycle. Alumina molecular sieve is selected as the adsorbent of the adsorption dryer, and the pressure dew point can be reduced to -40°C. The air conditioner 1-5 can cool high-pressure air with a temperature of 45°C and a flow rate of 10 m³ / min to -10°C, and the outlet temperature can be adjusted within the range of -10 to 0°C, with a temperature control accuracy of ±1°C.

[0045] This structure is applicable to various transportation conditions such as roads, railways, container ocean transport ships, and snow sleds. The integrated system can not only achieve overall lifting but also separate helicopter lifting. The system structure realizes intelligence, modularization, convenience, and lightweight, and the equipment can adapt to long-term storage and construction in ultra-low temperature environments.

[0046] The polar air drilling circulation system of the present utility model is mainly applicable to drilling operations in polar regions, deserts, etc., where there is a lack of water, aridity, or environmental protection requirements. In these environments, traditional liquid circulation media are easily restricted by environmental conditions, while the air drilling circulation integrated system can effectively address these problems. In addition, the system can also be used for drilling operations under some special geological conditions, such as frozen soil, salt layers, etc.

[0047] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A polar air drilling circulation system, characterized in that: include: An air compressor (1-1) for compressing air, a gas storage tank (1-2) for storing high-pressure gas connected to the air compressor (1-1), a refrigerated dryer (1-3) for primary drying of the high-pressure air connected to the gas storage tank (1-2), an adsorption dryer (1-4) for secondary drying of the high-pressure air connected to the refrigerated dryer (1-3), an air cooler (1-5) for cooling the high-pressure air connected to the adsorption dryer (1-4), an air inlet pipeline (1-6) for conveying high-pressure airflow to a drill bit connected to an air outlet of the air cooler (1-5), and an exhaust pipeline (1-7) for exhausting air connected to the drill bit.

2. The polar air drilling circulation system according to claim 1, characterized in that: Also includes: A pre-filter (1-9) for filtering is arranged on the input pipeline of the refrigeration dryer (1-3), and a post-filter (1-10) for filtering is arranged on the output pipeline of the adsorption dryer (1-4).

3. The polar air drilling circulation system according to claim 1 or 2, characterized in that: Also includes: A sensor assembly (1-8) for monitoring the flow, pressure, temperature and humidity of high-pressure air is arranged on the air intake pipeline (1-6).

4. The arctic air drilling circulation system according to claim 3, characterized in that: The sensor assembly (1-8) comprises: Vortex flowmeter for monitoring high-pressure air flow; A pressure transmitter for monitoring the pressure in the air intake line (1-6); A thermometer for monitoring the temperature in the air intake line (1-6); and a dew point meter for monitoring the humidity in the air intake line (1-6).

5. The arctic air drilling circulation system according to claim 1, characterized in that: The air temperature at the outlet of the air cooler (1-5) is ≤-5°C.

6. The arctic air drilling circulation system according to claim 1, characterized in that: Also includes: Container for integrated installation of arctic air drilling circulation system.

7. The arctic air drilling circulation system according to claim 6, characterized in that: A sled for sliding is arranged at the bottom of the container.

8. A polar drilling integrated equipment for polar ice drilling, characterized in that: include: An arctic air drilling circulation system (1) as claimed in any one of claims 1 to 7 for performing a single drilling in a borehole; An integrated polar drilling fluid circulation system (2) for secondary drilling in a borehole to complete the drilling and coring; A polar drilling site power integration system (3) for providing power support for a polar air drilling circulation system (1) and a polar drilling fluid circulation integration system (2); and a drilling rig system (7) for completing drilling and coring, which is used in conjunction with the polar air drilling circulation system (1), the polar drilling fluid circulation integration system (2), and the polar drilling drilling site power integration system (3).

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