Geothermal Well Drill Bits
Geothermal drilling characteristics of geothermal drilling the main oil and gas well drilling technology for reference, because the heat reservoir rock geological conditions, such as lithology, buried depth and output fluid property is different, compared with more demanding conditions of oil and gas drilling, geothermal drilling, but also for geothermal well characteristic of the high temperature and large diameter to new technology and new equipment improvement and development.
Characteristics of Geothermal Drilling
Compared with oil and gas drilling, geothermal drilling has the following characteristics:
High temperature, great variation in buried depth.
The rock is hard, abrasive and high in-situ stress heat storage rocks are mostly volcanic and metamorphic rocks. Compared with the deposition rock of oil and gas wells, the rock is hard, abrasive and high in-situ stress, and the stratum is broken and often unstable.
The crack height is developed, and even centimeter-grade cracks exist.
Formation pressure is low and leakage is serious.
The formation often contains corrosive fluid, which is corrosive to drilling string, casing, etc.
This requires the production of expensive titanium alloy bushing and the development of special cement.
The geothermal well has a large diameter, many casing procedures and a large amount of cement.
Recommended Geothermal oil well drill bit types
Drilling a geothermal well is similar to drilling oil, gas and well. In order to overcome the special difficulties in drilling, drilling methods, flushing media, drilling tools, casing head structure, wellhead device and other appropriate technical measures should be adopted.
The drill pipe and drill collar with high-temperature resistance, corrosion resistance, low coefficient of thermal expansion and high strength should be used in the drill pipe and drill collar.
And we will recommend high-quality PDC bit and Tricone bit of GREAT.
Cangzhou Great Drill Bits Co.,Ltd.is a drill bit manufacturer, we have china rock drill toolsfor sale, rock drill bitand etc. For more information about drill bit types oil and gasand more, please feel free to contact us!
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Tricone Bit | Overview of Tricone Bit Tricone bit is mainly used in drilling, exploration, petroleum and trenchless as pilot bit. According to cutting mate... |
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Matrix Body PDC Bit | GREAT, as one of the professional drill bit manufacturers in China, we design and manufacture a wide variety of Matrix body PDC (polycrystalline di... |
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Hard Rock PDC cone bit Used for drill underground core | Overview of PDC Core Bit GREAT customized made Diamond core bits, which including Matrix body and Steel body, the Diamond core bit is used to dril... |
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Roller Bit | As one of the rock drill bits manufacturersin China, Cangzhou Great Drill Bits Co.,Ltd.has customized several types of roller cone bits for salethr... |
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Roller Bit | Overview of Core Barrel Roller Bit The roller bit core barreluses high carbon steel and a special bit Angle to maintain drilling strength and effi... |
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