Diamond compact

A diamond composite sheet and diamond technology, which is applied in the field of diamond composite sheets, can solve the problems of low drilling efficiency, high drill bit torque, and large drilling cutting resistance, so as to reduce drilling cutting resistance, increase mechanical speed of penetration, and improve mechanical strength. The effect of drilling speed
CN106089089AInactive Publication Date: 2016-11-09KINGDREAM PLC CO +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KINGDREAM PLC CO
Publication Date
2016-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a diamond compact which comprises a cemented carbide substrate and a diamond composite layer. The diamond compact is characterized in that a boss and strip-shaped flanges protruding upwards are arranged on the end face of the diamond composite layer, and each strip-shaped flange extends upwards to the edge of the boss in an inclined mode from the edge of the diamond composite layer. According to the diamond compact, multiple strip-shaped flanges are arranged, the cutting face has a high ploughing effect, the crushing and drilling performance of the compact is improved, the drilling cutting resistance is reduced, and the penetration speed of a diamond drill bit is increased; meanwhile, the cutting face composed of the strip-shaped flanges, the lateral inclined plane and the boss has high shock resistance; the effect of guiding downhole debris to be discharged can be achieved, and the penetration speed of the diamond drill bit is increased. The cutting face of the compact is larger, abrasion resistance of the compact is further improved, and the service life of the diamond drill bit is further prolonged.
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Description

technical field

[0001] The invention relates to a diamond composite sheet, which belongs to the technical field of petroleum drilling. Background technique

[0002] Since the 1980s, diamond drill bits have been widely used in oil and gas drilling projects. Diamond drills are mainly composed of drill bodies and cutting elements. Diamond drills are divided into three categories according to cutting elements: PDC (polycrystalline diamond) drills, TSP (thermally stable polycrystalline diamond) drills and natural diamond drills. PDC bits are mainly used for drilling in soft to medium-hard formations. After continuous technological progress, the scope of application of PDC bits is getting wider and wider, and they have better economic value. TSP bits are mainly used for drilling in medium-hard to extremely hard formations. At present, deep well operations in oil and gas drilling projects are gradually increasing, and the formations encountered are becoming more and more complex....

Claims

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