CN202431187U - Vehicle-mounted drilling machine for oilfield or coal bed gas exploitation - Google Patents

Abstract

The utility model relates to a vehicle-mounted drilling rig used for oilfield or coalbed methane exploitation, comprising a vehicle frame and a drilling power machine arranged on the vehicle frame for drilling construction, and the vehicle frame is also provided with a natural gas-diesel mixed combustion engine The engine, the gas storage tank for storing natural gas and the fuel tank for storing diesel oil, the gas storage tank and the fuel tank are respectively connected with the cylinder of the natural gas-diesel mixed combustion engine through corresponding gas supply pipelines and oil supply pipelines, and the The power output end of the natural gas-diesel engine is connected to a hydraulic pump group through clutch transmission, and the output end of the hydraulic pump group is connected to the drilling power machine through a corresponding hydraulic oil circuit. The utility model provides a vehicle-mounted drilling rig for oil field or coal bed gas exploitation, which has low environmental pollution and can reduce drilling cost.

Description

A vehicle-mounted drilling rig for oilfield or coalbed methane exploitation

technical field

The utility model relates to a vehicle-mounted drilling rig used for oil field or coal bed gas exploitation. the

Background technique

Existing vehicle-mounted drilling rigs used in oil fields or coalbed methane exploitation use a single power source to drive the corresponding hydraulic system, and the hydraulic system drives the corresponding drilling power machinery to complete the drilling action. The drilling rig power machinery includes a mast, a hydraulic cylinder that drives the mast to overturn, The power head assembled on the mast. The single power source is mainly a diesel engine. This vehicle-mounted drilling rig has the disadvantages of high fuel consumption and environmental pollution. According to statistics, the fuel consumption of drilling power machinery accounts for more than 20% of the drilling cost. Moreover, the vehicle-mounted drilling rig generally works in remote areas, and the transportation is inconvenient. The transportation of diesel oil alone also has great difficulties, and the transportation cost of diesel oil accounts for a high proportion of drilling costs. the

Contents of the invention

The purpose of the utility model is to provide a vehicle-mounted drilling rig for oil field or coal bed gas exploitation, which has low environmental pollution and can reduce drilling cost. the

In order to solve the above problems, the technical solution of the utility model is:

A vehicle-mounted drilling rig for oilfield or coalbed methane exploitation, comprising a vehicle frame and a drilling power machine for drilling construction arranged on the vehicle frame, the vehicle frame is also provided with a natural gas-diesel mixed combustion engine for A gas storage tank for storing natural gas and a fuel tank for storing diesel oil, the gas storage tank and the fuel tank are respectively connected to the cylinder of the natural gas-diesel mixed combustion engine through corresponding gas supply pipelines and oil supply pipelines, and the natural gas-diesel engine The power output end of the hydraulic pump group is connected to a hydraulic pump group through clutch transmission, and the output end of the hydraulic pump group is connected to the drilling power machine through a corresponding hydraulic oil circuit.

The hydraulic pump group includes at least two hydraulic pumps, a transfer case is arranged between the clutch and the hydraulic pump group, and the transfer case includes a power input end connected to the output end of the clutch, The transfer case also includes a power output end that is in transmission connection with the corresponding hydraulic pump. the

The gas supply pipeline and the oil supply pipeline are respectively provided with flow regulating valves to control the flow of natural gas and diesel in the corresponding pipelines. the

The clutch is a mechanical clutch, a pneumatic clutch, an electric clutch or an electromagnetic clutch. the

The beneficial effects of the utility model are: the natural gas-diesel co-combustion engine has two working states, one is natural gas-diesel co-combustion, the oil supply pipeline injects a small amount of diesel into the cylinder of the engine, and the engine sprays a small amount of diesel into the cylinder by compression ignition Diesel is the "pilot fuel" and natural gas is the main fuel; the other is full diesel combustion. Compared with diesel oil, natural gas is a kind of clean energy, which can reduce exhaust gas emissions; the price of natural gas is much lower than that of diesel oil, thus reducing drilling costs; at the same time, natural gas can be conveniently stored in gas storage tanks after liquefaction, which is convenient for transportation and completely It can meet the needs of the field operation of the vehicle-mounted drilling rig; more importantly, there is ready-made natural gas in the oil field or coalbed methane mining area, so even if the natural gas is not transported from other places to the drilling area, the vehicle-mounted drilling rig can easily meet the demand for natural gas fuel at the construction site. demand. the

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model. the

Detailed ways

An embodiment of a vehicle-mounted drilling rig for oilfield or coalbed methane exploitation is shown in Figure 1: it includes a vehicle frame 1 and a drilling power machine arranged on the vehicle frame 1, and the drilling power machine includes a mast, a hydraulic cylinder that drives the mast to overturn, The power head assembled on the mast. The frame 1 is also provided with a natural gas-diesel mixed combustion engine 2, a fuel tank (not shown in the figure) for storing diesel oil and a gas storage tank (not shown in the figure) for storing natural gas, the gas storage tank and the fuel tank They are connected to the cylinders of the natural gas-diesel mixed combustion engine 2 through corresponding gas supply pipelines and oil supply pipelines respectively. The gas supply pipelines and the oil supply pipelines are respectively provided with flow regulating valves for controlling the natural gas flow and diesel flow in the corresponding pipelines. The flow regulating valve is a proportional reversing valve arranged on the air supply pipeline and the oil supply pipeline, and the vehicle frame is also provided with an automatic switching device for controlling the proportional reversing valve. The power output end of the natural gas-diesel engine is connected to the power input end of a transfer case 4 through a mechanical clutch 3, and the power output end of the transfer case 4 is connected to a hydraulic pump group, and the hydraulic pump group includes a plurality of hydraulic pumps 5. The power output ends of each hydraulic pump 5 are respectively connected to each drilling power machine through corresponding hydraulic oil circuits. In other embodiments of the present utility model: the mechanical clutch 3 can also be replaced by a pneumatic clutch, an electric clutch or an electromagnetic clutch; of course, the proportional reversing valve can also be replaced by a flow regulating valve respectively arranged in the air supply pipeline and the oil supply pipeline. replace. the

When working, when natural gas is sufficient, the natural gas-diesel mixed combustion engine uses natural gas and diesel fuel as power through an automatic switching device; when there is no natural gas, the natural gas-diesel mixed combustion engine uses diesel fuel as power through an automatic switching device. When natural gas and diesel are co-combusted, natural gas replaces fuel by 70%, fuel costs can be reduced by about 35%, and exhaust emissions are reduced, air quality is improved, and Weihua's natural ecology. The vehicle-mounted drilling rig of the utility model is better than the existing vehicle-mounted drilling rig in terms of power, environmental protection, acceleration and economy, and at the same time fully utilizes the self-produced natural gas in the mining area as fuel, which solves the inconvenient transportation and transportation costs of the existing fuel higher question. the

Claims (4)

1. truck-mounted drilling rig that is used for oil field or coal-bed gas exploitation; Comprise vehicle frame and be arranged at the drilling motor tool that is used for wellbore construction on the vehicle frame; It is characterized in that: also be provided with natural gas-diesel oil mixed fuel motor on the described vehicle frame, be used for the gasholder of natural gas-storing and be used to store the fuel tank of diesel oil; Gasholder is connected with the cylinder of oil feed line with said natural gas-diesel oil mixed fuel motor through corresponding supply air line respectively with fuel tank; The clutch end of said natural gas-Diesel engine is connected with the hydraulic pump group through clutch, and the output of described hydraulic pump group links to each other with described drilling motor tool through corresponding hydraulic circuit.

2. truck-mounted drilling rig according to claim 1; It is characterized in that: said hydraulic pump group comprises at least two hydraulic pumps; Be provided with transfer case between described clutch and said hydraulic pump group; Described transfer case comprises the power intake that the output with said clutch is in transmission connection, and described transfer case also comprises the clutch end that is in transmission connection with said corresponding hydraulic pump.

3. truck-mounted drilling rig according to claim 1 is characterized in that: the flow control valve that is respectively equipped with gas discharge and diesel oil flow in the corresponding pipeline of control on described supply air line and the oil feed line.

4. according to any described truck-mounted drilling rig of claim 1 ~ 3, it is characterized in that: described clutch is mechanical clutch, pneumatic clutch, electric clutch or electromagnetic clutch.

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